+/* This file is part of the Linux Trace Toolkit viewer
+ * Copyright (C) 2005 Mathieu Desnoyers
+ *
+ * Complete rewrite from the original version made by XangXiu Yang.
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License Version 2 as
+ * published by the Free Software Foundation;
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 59 Temple Place - Suite 330, Boston,
+ * MA 02111-1307, USA.
+ */
+
+#ifdef HAVE_CONFIG_H
+#include <config.h>
+#endif
+
#include <stdio.h>
#include <fcntl.h>
+#include <string.h>
+#include <dirent.h>
#include <sys/stat.h>
#include <sys/types.h>
-#include <linux/errno.h>
+#include <errno.h>
+#include <unistd.h>
+#include <math.h>
+#include <glib.h>
+#include <malloc.h>
+#include <sys/mman.h>
+
+// For realpath
+#include <limits.h>
+#include <stdlib.h>
+
-#include "LTTTypes.h"
#include "parser.h"
-#include <ltt/tracefile.h>
+#include <ltt/ltt.h>
+#include "ltt-private.h"
+#include <ltt/trace.h>
+#include <ltt/facility.h>
+#include <ltt/event.h>
+#include <ltt/type.h>
+#include <ltt/ltt-types.h>
-//#include "default.h" //yxx test
-/* set the offset of the fields belonging to the event,
- need the information of the archecture */
-void setFieldsOffset(ltt_tracefile * t, ltt_eventtype *evT, void *evD);
+/* Facility names used in this file */
+
+GQuark LTT_FACILITY_NAME_HEARTBEAT,
+ LTT_EVENT_NAME_HEARTBEAT;
+GQuark LTT_TRACEFILE_NAME_FACILITIES;
+
+#ifndef g_open
+#define g_open open
+#endif
+
-/* get the size of the field type according to the archtecture's
- size and endian type(info of the archecture) */
-int getFieldtypeSize(ltt_tracefile * t, ltt_eventtype * evT, int offsetRoot,
- int offsetParent, ltt_field * fld, void * evD );
+#define __UNUSED__ __attribute__((__unused__))
-/* read a fixed size or a block information from the file (fd) */
-int readFile(int fd, void * buf, size_t size, char * mesg);
-int readBlock(ltt_tracefile * tf, int whichBlock);
+#define g_info(format...) g_log (G_LOG_DOMAIN, G_LOG_LEVEL_INFO, format)
-/* calculate cycles per nsec for current block */
-void getCyclePerNsec(ltt_tracefile * t);
+#ifndef g_debug
+#define g_debug(format...) g_log (G_LOG_DOMAIN, G_LOG_LEVEL_DEBUG, format)
+#endif
-/* functions to release the memory occupied by the tables of a tracefile */
-void freeKey (gpointer key, gpointer value, gpointer user_data);
-void freeValue (gpointer key, gpointer value, gpointer user_data);
-void freeFacilityNameTable (gpointer key, gpointer value, gpointer user_data);
+#define g_close close
+
+/* Those macros must be called from within a function where page_size is a known
+ * variable */
+#define PAGE_MASK (~(page_size-1))
+#define PAGE_ALIGN(addr) (((addr)+page_size-1)&PAGE_MASK)
+
+/* obtain the time of an event */
+
+static inline LttTime getEventTime(LttTracefile * tf);
+
+
+/* set the offset of the fields belonging to the event,
+ need the information of the archecture */
+void set_fields_offsets(LttTracefile *tf, LttEventType *event_type);
+//size_t get_fields_offsets(LttTracefile *tf, LttEventType *event_type, void *data);
-/* reinitialize the info of the block which is already in the buffer */
-void updateTracefile(ltt_tracefile * tf);
+/* get the size of the field type according to
+ * The facility size information. */
+static inline void preset_field_type_size(LttTracefile *tf,
+ LttEventType *event_type,
+ off_t offset_root, off_t offset_parent,
+ enum field_status *fixed_root, enum field_status *fixed_parent,
+ LttField *field);
+
+/* map a fixed size or a block information from the file (fd) */
+static gint map_block(LttTracefile * tf, guint block_num);
+
+/* calculate nsec per cycles for current block */
+static double calc_nsecs_per_cycle(LttTracefile * t);
/* go to the next event */
-int skipEvent(ltt_tracefile * t);
-
-/* compare two time (ltt_time), 0:t1=t2, -1:t1<t2, 1:t1>t2 */
-int timecmp(ltt_time * t1, ltt_time * t2);
-
-/* get an integer number */
-int getIntNumber(int size1, void *evD);
-
-
-/* Time operation macros for ltt_time (struct timespec) */
-/* (T3 = T2 - T1) */
-#define TimeSub(T3, T2, T1) \
-do \
-{\
- (T3).tv_sec = (T2).tv_sec - (T1).tv_sec; \
- (T3).tv_nsec = (T2).tv_nsec - (T1).tv_nsec; \
- if((T3).tv_nsec < 0)\
- {\
- (T3).tv_sec--;\
- (T3).tv_nsec += 1000000000;\
- }\
-} while(0)
-
-/* (T3 = T2 + T1) */
-#define TimeAdd(T3, T2, T1) \
-do \
-{\
- (T3).tv_sec = (T2).tv_sec + (T1).tv_sec; \
- (T3).tv_nsec = (T2).tv_nsec + (T1).tv_nsec; \
- if((T3).tv_nsec >= 1000000000)\
- {\
- (T3).tv_sec += (T3).tv_nsec / 1000000000;\
- (T3).tv_nsec = (T3).tv_nsec % 1000000000;\
- }\
-} while(0)
+static int ltt_seek_next_event(LttTracefile *tf);
+
+void ltt_update_event_size(LttTracefile *tf);
+
+#if 0
+/* Functions to parse system.xml file (using glib xml parser) */
+static void parser_start_element (GMarkupParseContext __UNUSED__ *context,
+ const gchar *element_name,
+ const gchar **attribute_names,
+ const gchar **attribute_values,
+ gpointer user_data,
+ GError **error)
+{
+ int i=0;
+ LttSystemDescription* des = (LttSystemDescription* )user_data;
+ if(strcmp("system", element_name)){
+ *error = g_error_new(G_MARKUP_ERROR,
+ G_LOG_LEVEL_WARNING,
+ "This is not system.xml file");
+ return;
+ }
+
+ while(attribute_names[i]){
+ if(strcmp("node_name", attribute_names[i])==0){
+ des->node_name = g_strdup(attribute_values[i]);
+ }else if(strcmp("domainname", attribute_names[i])==0){
+ des->domain_name = g_strdup(attribute_values[i]);
+ }else if(strcmp("cpu", attribute_names[i])==0){
+ des->nb_cpu = atoi(attribute_values[i]);
+ }else if(strcmp("arch_size", attribute_names[i])==0){
+ if(strcmp(attribute_values[i],"LP32") == 0) des->size = LTT_LP32;
+ else if(strcmp(attribute_values[i],"ILP32") == 0) des->size = LTT_ILP32;
+ else if(strcmp(attribute_values[i],"LP64") == 0) des->size = LTT_LP64;
+ else if(strcmp(attribute_values[i],"ILP64") == 0) des->size = LTT_ILP64;
+ else if(strcmp(attribute_values[i],"UNKNOWN") == 0) des->size = LTT_UNKNOWN;
+ }else if(strcmp("endian", attribute_names[i])==0){
+ if(strcmp(attribute_values[i],"LITTLE_ENDIAN") == 0)
+ des->endian = LTT_LITTLE_ENDIAN;
+ else if(strcmp(attribute_values[i],"BIG_ENDIAN") == 0)
+ des->endian = LTT_BIG_ENDIAN;
+ }else if(strcmp("kernel_name", attribute_names[i])==0){
+ des->kernel_name = g_strdup(attribute_values[i]);
+ }else if(strcmp("kernel_release", attribute_names[i])==0){
+ des->kernel_release = g_strdup(attribute_values[i]);
+ }else if(strcmp("kernel_version", attribute_names[i])==0){
+ des->kernel_version = g_strdup(attribute_values[i]);
+ }else if(strcmp("machine", attribute_names[i])==0){
+ des->machine = g_strdup(attribute_values[i]);
+ }else if(strcmp("processor", attribute_names[i])==0){
+ des->processor = g_strdup(attribute_values[i]);
+ }else if(strcmp("hardware_platform", attribute_names[i])==0){
+ des->hardware_platform = g_strdup(attribute_values[i]);
+ }else if(strcmp("operating_system", attribute_names[i])==0){
+ des->operating_system = g_strdup(attribute_values[i]);
+ }else if(strcmp("ltt_major_version", attribute_names[i])==0){
+ des->ltt_major_version = atoi(attribute_values[i]);
+ }else if(strcmp("ltt_minor_version", attribute_names[i])==0){
+ des->ltt_minor_version = atoi(attribute_values[i]);
+ }else if(strcmp("ltt_block_size", attribute_names[i])==0){
+ des->ltt_block_size = atoi(attribute_values[i]);
+ }else{
+ *error = g_error_new(G_MARKUP_ERROR,
+ G_LOG_LEVEL_WARNING,
+ "Not a valid attribute");
+ return;
+ }
+ i++;
+ }
+}
+
+static void parser_characters (GMarkupParseContext __UNUSED__ *context,
+ const gchar *text,
+ gsize __UNUSED__ text_len,
+ gpointer user_data,
+ GError __UNUSED__ **error)
+{
+ LttSystemDescription* des = (LttSystemDescription* )user_data;
+ des->description = g_strdup(text);
+}
+#endif //0
+LttFacility *ltt_trace_get_facility_by_num(LttTrace *t,
+ guint num)
+{
+ g_assert(num < t->facilities_by_num->len);
+
+ return &g_array_index(t->facilities_by_num, LttFacility, num);
+}
/*****************************************************************************
*Function name
- * ltt_tracefile_open : open a trace file, construct a ltt_tracefile
+ * ltt_tracefile_open : open a trace file, construct a LttTracefile
*Input params
- * pathname : path name of the trace file
+ * t : the trace containing the tracefile
+ * fileName : path name of the trace file
+ * tf : the tracefile structure
*Return value
- * ltt_tracefile * : the structure represents the opened trace file
+ * : 0 for success, -1 otherwise.
****************************************************************************/
-ltt_tracefile *ltt_tracefile_open(char * fileName)
+gint ltt_tracefile_open(LttTrace *t, gchar * fileName, LttTracefile *tf)
{
- ltt_tracefile * tf;
- struct stat lTDFStat; /* Trace data file status */
- trace_header_event *trace_header;
- block_header a_block_header;
-
- tf = g_new(ltt_tracefile, 1);
+ struct stat lTDFStat; /* Trace data file status */
+ struct ltt_block_start_header *header;
+ int page_size = getpagesize();
//open the file
- tf->fd = open(fileName, O_RDONLY, 0);
+ tf->name = g_quark_from_string(fileName);
+ tf->trace = t;
+ tf->fd = open(fileName, O_RDONLY);
if(tf->fd < 0){
- g_error("Unable to open input data file %s\n", fileName);
+ g_warning("Unable to open input data file %s\n", fileName);
+ goto end;
}
// Get the file's status
if(fstat(tf->fd, &lTDFStat) < 0){
- g_error("Unable to get the status of the input data file %s\n", fileName);
+ g_warning("Unable to get the status of the input data file %s\n", fileName);
+ goto close_file;
}
// Is the file large enough to contain a trace
- if(lTDFStat.st_size < sizeof(block_header) + sizeof(trace_header_event)){
- g_error("The input data file %s does not contain a trace\n", fileName);
+ if(lTDFStat.st_size < (off_t)(sizeof(struct ltt_block_start_header))){
+ g_print("The input data file %s does not contain a trace\n", fileName);
+ goto close_file;
+ }
+
+ /* Temporarily map the buffer start header to get trace information */
+ /* Multiple of pages aligned head */
+ tf->buffer.head = mmap(0,
+ PAGE_ALIGN(sizeof(struct ltt_block_start_header)), PROT_READ,
+ MAP_PRIVATE, tf->fd, 0);
+ if(tf->buffer.head == MAP_FAILED) {
+ perror("Error in allocating memory for buffer of tracefile");
+ goto close_file;
}
+ g_assert( ( (guint)tf->buffer.head&(8-1) ) == 0); // make sure it's aligned.
+ header = (struct ltt_block_start_header*)tf->buffer.head;
+
+ if(header->trace.magic_number == LTT_MAGIC_NUMBER)
+ tf->reverse_bo = 0;
+ else if(header->trace.magic_number == LTT_REV_MAGIC_NUMBER)
+ tf->reverse_bo = 1;
+ else /* invalid magic number, bad tracefile ! */
+ goto unmap_file;
+
//store the size of the file
tf->file_size = lTDFStat.st_size;
+ tf->block_size = ltt_get_uint32(LTT_GET_BO(tf), &header->buf_size);
+ tf->num_blocks = tf->file_size / tf->block_size;
- //read the first block header
- if(readFile(tf->fd,(void*)&a_block_header, sizeof(block_header),
- "Unable to read block header"))
- exit(1);
-
- //read the trace header event
- trace_header = g_new(trace_header_event, 1);
- if(readFile(tf->fd,(void*)trace_header, sizeof(trace_header_event),
- "Unable to read trace header event"))
- exit(1);
-
- tf->block_number = tf->file_size / trace_header->buffer_size;
- tf->trace_header = (trace_header_event *)trace_header;
-
- //allocate memory to contain the info of a block
- tf->buffer = (void *) g_new(char, trace_header->buffer_size);
+ munmap(tf->buffer.head, PAGE_ALIGN(sizeof(struct ltt_block_start_header)));
+ tf->buffer.head = NULL;
- //read the last block, get the trace end time
- if(readBlock(tf,tf->block_number)) exit(1);
- tf->end_time = tf->a_block_footer->time;
+ //read the first block
+ if(map_block(tf,0)) {
+ perror("Cannot map block for tracefile");
+ goto close_file;
+ }
+
+ return 0;
- //read the first block, get the trace start time
- if(tf->block_number != 1)
- if(readBlock(tf,1)) exit(1);
- tf->start_time = tf->a_block_header->time;
+ /* Error */
+unmap_file:
+ munmap(tf->buffer.head, PAGE_ALIGN(sizeof(struct ltt_block_start_header)));
+close_file:
+ close(tf->fd);
+end:
+ return -1;
+}
- //get local machine's data type size and endian type
- getDataEndianType(&(tf->my_arch_size), &(tf->my_arch_endian));
+#if 0
+/*****************************************************************************
+ *Open control and per cpu tracefiles
+ ****************************************************************************/
- //initialize all tables
- tf->eventtype_number = 0;
- tf->facility_number = 0;
- tf->index_facility = g_hash_table_new (g_int_hash, g_int_equal);
- tf->facility_name = g_hash_table_new (g_str_hash, g_str_equal);
- tf->base_id_name = g_hash_table_new (g_str_hash, g_int_equal);
- tf->eventtype_event_id = g_ptr_array_new();
+void ltt_tracefile_open_cpu(LttTrace *t, gchar * tracefile_name)
+{
+ LttTracefile * tf;
+ tf = ltt_tracefile_open(t,tracefile_name);
+ if(!tf) return;
+ t->per_cpu_tracefile_number++;
+ g_ptr_array_add(t->per_cpu_tracefiles, tf);
+}
- return tf;
+gint ltt_tracefile_open_control(LttTrace *t, gchar * control_name)
+{
+ LttTracefile * tf;
+ LttEvent ev;
+ LttFacility * f;
+ void * pos;
+ FacilityLoad fLoad;
+ unsigned int i;
+
+ tf = ltt_tracefile_open(t,control_name);
+ if(!tf) {
+ g_warning("ltt_tracefile_open_control : bad file descriptor");
+ return -1;
+ }
+ t->control_tracefile_number++;
+ g_ptr_array_add(t->control_tracefiles,tf);
+
+ //parse facilities tracefile to get base_id
+ if(strcmp(&control_name[strlen(control_name)-10],"facilities") ==0){
+ while(1){
+ if(!ltt_tracefile_read(tf,&ev)) return 0; // end of file
+
+ if(ev.event_id == TRACE_FACILITY_LOAD){
+ pos = ev.data;
+ fLoad.name = (gchar*)pos;
+ fLoad.checksum = *(LttChecksum*)(pos + strlen(fLoad.name));
+ fLoad.base_code = *(guint32 *)(pos + strlen(fLoad.name) + sizeof(LttChecksum));
+
+ for(i=0;i<t->facility_number;i++){
+ f = (LttFacility*)g_ptr_array_index(t->facilities,i);
+ if(strcmp(f->name,fLoad.name)==0 && fLoad.checksum==f->checksum){
+ f->base_id = fLoad.base_code;
+ break;
+ }
+ }
+ if(i==t->facility_number) {
+ g_warning("Facility: %s, checksum: %u is not found",
+ fLoad.name,(unsigned int)fLoad.checksum);
+ return -1;
+ }
+ }else if(ev.event_id == TRACE_BLOCK_START){
+ continue;
+ }else if(ev.event_id == TRACE_BLOCK_END){
+ break;
+ }else {
+ g_warning("Not valid facilities trace file");
+ return -1;
+ }
+ }
+ }
+ return 0;
}
+#endif //0
/*****************************************************************************
*Function name
- * ltt_tracefile_close: close a trace file, release all facilities if their
- * usage count == 0 when close_facilities is true
+ * ltt_tracefile_close: close a trace file,
*Input params
* t : tracefile which will be closed
- * close_facilities : bool to show if the facilities need to be released
- *Return value
- * int : ????
****************************************************************************/
-int ltt_tracefile_close(ltt_tracefile *t, int close_facilities)
+void ltt_tracefile_close(LttTracefile *t)
{
- //free index_facility table
- g_hash_table_foreach (t->index_facility, freeKey, NULL);
- g_hash_table_destroy(t->index_facility);
+ if(t->buffer.head != NULL)
+ munmap(t->buffer.head, t->buf_size);
+ close(t->fd);
+}
- //free base_id_facility table
- g_hash_table_foreach (t->base_id_name, freeValue, NULL);
- g_hash_table_destroy(t->base_id_name);
- //free eventtype_event_id array
- g_ptr_array_free (t->eventtype_event_id, TRUE);
+/*****************************************************************************
+ *Get system information
+ ****************************************************************************/
+#if 0
+gint getSystemInfo(LttSystemDescription* des, gchar * pathname)
+{
+ int fd;
+ GIOChannel *iochan;
+ gchar *buf = NULL;
+ gsize length;
+
+ GMarkupParseContext * context;
+ GError * error = NULL;
+ GMarkupParser markup_parser =
+ {
+ parser_start_element,
+ NULL,
+ parser_characters,
+ NULL, /* passthrough */
+ NULL /* error */
+ };
+
+ fd = g_open(pathname, O_RDONLY, 0);
+ if(fd == -1){
+ g_warning("Can not open file : %s\n", pathname);
+ return -1;
+ }
+
+ iochan = g_io_channel_unix_new(fd);
+
+ context = g_markup_parse_context_new(&markup_parser, 0, des,NULL);
+
+ //while(fgets(buf,DIR_NAME_SIZE, fp) != NULL){
+ while(g_io_channel_read_line(iochan, &buf, &length, NULL, &error)
+ != G_IO_STATUS_EOF) {
- //free facility_name table
- g_hash_table_foreach (t->facility_name, freeFacilityNameTable,
- GINT_TO_POINTER(1));
- g_hash_table_destroy(t->facility_name);
+ if(error != NULL) {
+ g_warning("Can not read xml file: \n%s\n", error->message);
+ g_error_free(error);
+ }
+ if(!g_markup_parse_context_parse(context, buf, length, &error)){
+ if(error != NULL) {
+ g_warning("Can not parse xml file: \n%s\n", error->message);
+ g_error_free(error);
+ }
+ g_markup_parse_context_free(context);
- //free tracefile structure
- g_free(t->trace_header);
- g_free(t->buffer);
- g_free(t);
+ g_io_channel_shutdown(iochan, FALSE, &error); /* No flush */
+ if(error != NULL) {
+ g_warning("Can not close file: \n%s\n", error->message);
+ g_error_free(error);
+ }
+
+ close(fd);
+ return -1;
+ }
+ }
+ g_markup_parse_context_free(context);
+
+ g_io_channel_shutdown(iochan, FALSE, &error); /* No flush */
+ if(error != NULL) {
+ g_warning("Can not close file: \n%s\n", error->message);
+ g_error_free(error);
+ }
+
+ g_close(fd);
+
+ g_free(buf);
return 0;
}
+#endif //0
/*****************************************************************************
- * functions to release the memory occupied by the tables of a tracefile
+ *The following functions get facility/tracefile information
****************************************************************************/
+#if 0
+gint getFacilityInfo(LttTrace *t, gchar* eventdefs)
+{
+ GDir * dir;
+ const gchar * name;
+ unsigned int i,j;
+ LttFacility * f;
+ LttEventType * et;
+ gchar fullname[DIR_NAME_SIZE];
+ GError * error = NULL;
+
+ dir = g_dir_open(eventdefs, 0, &error);
+
+ if(error != NULL) {
+ g_warning("Can not open directory: %s, %s\n", eventdefs, error->message);
+ g_error_free(error);
+ return -1;
+ }
+
+ while((name = g_dir_read_name(dir)) != NULL){
+ if(!g_pattern_match_simple("*.xml", name)) continue;
+ strcpy(fullname,eventdefs);
+ strcat(fullname,name);
+ ltt_facility_open(t,fullname);
+ }
+ g_dir_close(dir);
+
+ for(j=0;j<t->facility_number;j++){
+ f = (LttFacility*)g_ptr_array_index(t->facilities, j);
+ for(i=0; i<f->event_number; i++){
+ et = f->events[i];
+ setFieldsOffset(NULL, et, NULL, t);
+ }
+ }
+ return 0;
+}
+#endif //0
+
+/*****************************************************************************
+ *A trace is specified as a pathname to the directory containing all the
+ *associated data (control tracefiles, per cpu tracefiles, event
+ *descriptions...).
+ *
+ *When a trace is closed, all the associated facilities, types and fields
+ *are released as well.
+ */
-void freeKey (gpointer key, gpointer value, gpointer user_data)
+
+/****************************************************************************
+ * get_absolute_pathname
+ *
+ * return the unique pathname in the system
+ *
+ * MD : Fixed this function so it uses realpath, dealing well with
+ * forgotten cases (.. were not used correctly before).
+ *
+ ****************************************************************************/
+void get_absolute_pathname(const gchar *pathname, gchar * abs_pathname)
{
- g_free(key);
+ abs_pathname[0] = '\0';
+
+ if ( realpath (pathname, abs_pathname) != NULL)
+ return;
+ else
+ {
+ /* error, return the original path unmodified */
+ strcpy(abs_pathname, pathname);
+ return;
+ }
+ return;
}
-void freeValue (gpointer key, gpointer value, gpointer user_data)
+/* Search for something like : .*_.*
+ *
+ * The left side is the name, the right side is the number.
+ */
+
+int get_tracefile_name_number(const gchar *raw_name,
+ GQuark *name,
+ guint *num)
{
- g_free(value);
+ guint raw_name_len = strlen(raw_name);
+ gchar char_name[PATH_MAX];
+ gchar *digit_begin;
+ int i;
+ int underscore_pos;
+ long int cpu_num;
+ gchar *endptr;
+
+ for(i=raw_name_len-1;i>=0;i--) {
+ if(raw_name[i] == '_') break;
+ }
+ if(i==0) /* Either not found or name length is 0 */
+ return -1;
+ underscore_pos = i;
+
+ cpu_num = strtol(raw_name+underscore_pos+1, &endptr, 10);
+
+ if(endptr == raw_name+underscore_pos+1)
+ return -1; /* No digit */
+ if(cpu_num == LONG_MIN || cpu_num == LONG_MAX)
+ return -1; /* underflow / overflow */
+
+ strncpy(char_name, raw_name, underscore_pos);
+
+ *name = g_quark_from_string(char_name);
+ *num = cpu_num;
+
+ return 0;
}
-void freeFacilityNameTable (gpointer key, gpointer value, gpointer user_data)
+
+GData **ltt_trace_get_tracefiles_groups(LttTrace *trace)
{
- ltt_facility * fac = (ltt_facility*) value;
- fac->usage_count--;
- if(GPOINTER_TO_INT(user_data) != 0)
- ltt_facility_close(fac);
+ return &trace->tracefiles;
}
-/*****************************************************************************
- *Function name
- * ltt_tracefile_facility_add: increases the facility usage count and also
- * specifies the base of the numeric range
- * assigned to the event types in the facility
- * for this tracefile
- *Input params
- * t : tracefile that the facility will be added
- * f : facility that will be attached to the tracefile
- * base_id : the id for the first event of the facility in the
- * trace file
- *Return value
- * int : ????
- ****************************************************************************/
-int ltt_tracefile_facility_add(ltt_tracefile *t,ltt_facility *f,int base_id)
-{
- int * id, *index;
- int i, j, k;
- ltt_eventtype * et;
- gpointer tmpPtr;
-
- //increase the facility usage count
- f->usage_count++;
- t->eventtype_number += f->event_number;
- t->facility_number++;
-
- //insert the facility into index_facility table
- id = g_new(int,1);
- *id = t->facility_number;
- g_hash_table_insert(t->index_facility, (gpointer)id,(gpointer)f);
-
- //insert facility name into table: base_id_name
- id = g_new(int,1);
- *id = base_id;
- g_hash_table_insert(t->base_id_name, (gpointer)(f->name), (gpointer)id);
-
- //insert facility name into table: facility_name
- g_hash_table_insert(t->facility_name, (gpointer)(f->name), (gpointer)f);
-
- //insert eventtype into the array: eventtype_event_id
- j = base_id + f->event_number;
- k = t->eventtype_event_id->len;
- if(j > t->eventtype_event_id->len){
- for(i=0; i < j - k; i++){
- tmpPtr = (gpointer)g_new(ptr_wrap, 1);
- g_ptr_array_add(t->eventtype_event_id,tmpPtr);
- }
+void compute_tracefile_group(GQuark key_id,
+ GArray *group,
+ struct compute_tracefile_group_args *args)
+{
+ int i;
+ LttTracefile *tf;
+
+ for(i=0; i<group->len; i++) {
+ tf = &g_array_index (group, LttTracefile, i);
+ if(tf->cpu_online)
+ args->func(tf, args->func_args);
}
+}
- //initialize the unused elements: NULL
- if(j-k > f->event_number){
- for(i=k; i<base_id; i++){
- tmpPtr = g_ptr_array_index(t->eventtype_event_id, i);
- ((ptr_wrap*)tmpPtr)->ptr = NULL;
- }
+
+void ltt_tracefile_group_destroy(gpointer data)
+{
+ GArray *group = (GArray *)data;
+ int i;
+ LttTracefile *tf;
+
+ for(i=0; i<group->len; i++) {
+ tf = &g_array_index (group, LttTracefile, i);
+ if(tf->cpu_online)
+ ltt_tracefile_close(tf);
}
+ g_array_free(group, TRUE);
+}
+
+gboolean ltt_tracefile_group_has_cpu_online(gpointer data)
+{
+ GArray *group = (GArray *)data;
+ int i;
+ LttTracefile *tf;
- //initialize the elements with the eventtypes belonging to the facility
- for(i=0; i<f->event_number; i++){
- tmpPtr = g_ptr_array_index(t->eventtype_event_id, base_id + i);
- ((ptr_wrap*)tmpPtr)->ptr = (gpointer)(f->events[i]);
+ for(i=0; i<group->len; i++) {
+ tf = &g_array_index (group, LttTracefile, i);
+ if(tf->cpu_online) return 1;
}
+ return 0;
+}
+
+
+/* Open each tracefile under a specific directory. Put them in a
+ * GData : permits to access them using their tracefile group pathname.
+ * i.e. access control/modules tracefile group by index :
+ * "control/module".
+ *
+ * relative path is the path relative to the trace root
+ * root path is the full path
+ *
+ * A tracefile group is simply an array where all the per cpu tracefiles sits.
+ */
+
+static int open_tracefiles(LttTrace *trace, char *root_path,
+ char *relative_path)
+{
+ DIR *dir = opendir(root_path);
+ struct dirent *entry;
+ struct stat stat_buf;
+ int ret;
+
+ char path[PATH_MAX];
+ int path_len;
+ char *path_ptr;
+
+ int rel_path_len;
+ char rel_path[PATH_MAX];
+ char *rel_path_ptr;
+
+ if(dir == NULL) {
+ perror(root_path);
+ return ENOENT;
+ }
+
+ strncpy(path, root_path, PATH_MAX-1);
+ path_len = strlen(path);
+ path[path_len] = '/';
+ path_len++;
+ path_ptr = path + path_len;
+
+ strncpy(rel_path, relative_path, PATH_MAX-1);
+ rel_path_len = strlen(rel_path);
+ rel_path[rel_path_len] = '/';
+ rel_path_len++;
+ rel_path_ptr = rel_path + rel_path_len;
- //update offset
- for(i=0; i<f->event_number; i++){
- et = f->events[i];
- setFieldsOffset(t, et, NULL);
+ while((entry = readdir(dir)) != NULL) {
+
+ if(entry->d_name[0] == '.') continue;
+
+ strncpy(path_ptr, entry->d_name, PATH_MAX - path_len);
+ strncpy(rel_path_ptr, entry->d_name, PATH_MAX - rel_path_len);
+
+ ret = stat(path, &stat_buf);
+ if(ret == -1) {
+ perror(path);
+ continue;
+ }
+
+ g_debug("Tracefile file or directory : %s\n", path);
+
+ if(S_ISDIR(stat_buf.st_mode)) {
+
+ g_debug("Entering subdirectory...\n");
+ ret = open_tracefiles(trace, path, rel_path);
+ if(ret < 0) continue;
+ } else if(S_ISREG(stat_buf.st_mode)) {
+ g_debug("Opening file.\n");
+
+ GQuark name;
+ guint num;
+ GArray *group;
+ LttTracefile *tf;
+ guint len;
+
+ if(get_tracefile_name_number(rel_path, &name, &num))
+ continue; /* invalid name */
+
+ g_debug("Tracefile name is %s and number is %u",
+ g_quark_to_string(name), num);
+
+ group = g_datalist_id_get_data(&trace->tracefiles, name);
+ if(group == NULL) {
+ /* Elements are automatically cleared when the array is allocated.
+ * It makes the cpu_online variable set to 0 : cpu offline, by default.
+ */
+ group = g_array_sized_new (FALSE, TRUE, sizeof(LttTracefile), 10);
+ g_datalist_id_set_data_full(&trace->tracefiles, name,
+ group, ltt_tracefile_group_destroy);
+ }
+ /* Add the per cpu tracefile to the named group */
+ unsigned int old_len = group->len;
+ if(num+1 > old_len)
+ group = g_array_set_size(group, num+1);
+ tf = &g_array_index (group, LttTracefile, num);
+
+ if(ltt_tracefile_open(trace, path, tf)) {
+ g_info("Error opening tracefile %s", path);
+ g_array_set_size(group, old_len);
+
+ if(!ltt_tracefile_group_has_cpu_online(group))
+ g_datalist_id_remove_data(&trace->tracefiles, name);
+
+ continue; /* error opening the tracefile : bad magic number ? */
+ }
+ tf->cpu_online = 1;
+ tf->cpu_num = num;
+ }
+ }
+
+ closedir(dir);
+
+ return 0;
+}
+
+/* ltt_get_facility_description
+ *
+ * Opens the trace corresponding to the requested facility (identified by fac_id
+ * and checksum).
+ *
+ * The name searched is : %trace root%/eventdefs/facname_checksum.xml
+ *
+ * Returns 0 on success, or 1 on failure.
+ */
+
+static int ltt_get_facility_description(LttFacility *f,
+ LttTrace *t,
+ LttTracefile *fac_tf)
+{
+ char desc_file_name[PATH_MAX];
+ const gchar *text;
+ guint textlen;
+ gint err;
+ int i, j;
+ LttEventType *et;
+
+ text = g_quark_to_string(t->pathname);
+ textlen = strlen(text);
+
+ if(textlen >= PATH_MAX) goto name_error;
+ strcpy(desc_file_name, text);
+
+ text = "/eventdefs/";
+ textlen+=strlen(text);
+ if(textlen >= PATH_MAX) goto name_error;
+ strcat(desc_file_name, text);
+
+ text = g_quark_to_string(f->name);
+ textlen+=strlen(text);
+ if(textlen >= PATH_MAX) goto name_error;
+ strcat(desc_file_name, text);
+
+ text = "_";
+ textlen+=strlen(text);
+ if(textlen >= PATH_MAX) goto name_error;
+ strcat(desc_file_name, text);
+
+ err = snprintf(desc_file_name+textlen, PATH_MAX-textlen-1,
+ "%u", f->checksum);
+ if(err < 0) goto name_error;
+
+ textlen=strlen(desc_file_name);
+
+ text = ".xml";
+ textlen+=strlen(text);
+ if(textlen >= PATH_MAX) goto name_error;
+ strcat(desc_file_name, text);
+
+ err = ltt_facility_open(f, t, desc_file_name);
+ if(err) goto facility_error;
+
+ for(i=0;i<t->facilities_by_num->len;i++){
+ f = &g_array_index(t->facilities_by_num, LttFacility, i);
+ if(f->exists) {
+ for(j=0; j<f->events->len; j++){
+ et = &g_array_index(f->events, LttEventType, j);
+ set_fields_offsets(fac_tf, et);
+ }
+ }
}
return 0;
-}
-/*****************************************************************************
- * The following functions used to query the info of the machine where the
- * tracefile was generated. A tracefile may be queried for its architecture
- * type(e.g.,"i386", "powerpc", "powerpcle", "s390", "s390x"), its architecture
- * variant(e.g., "att" versus "sun" for m68k), its operating system (e.g.,
- * "linux","bsd"), its generic architecture, and the machine identity (e.g.,
- * system host name). All character strings belong to the associated tracefile
- * and are freed when it is closed
- ****************************************************************************/
+facility_error:
+name_error:
+ return 1;
+}
-uint32_t ltt_tracefile_arch_type(ltt_tracefile *t)
+static void ltt_fac_ids_destroy(gpointer data)
{
- return t->trace_header->arch_type;
-}
+ GArray *fac_ids = (GArray *)data;
+ int i;
+ LttFacility *fac;
+
+ for(i=0; i<fac_ids->len; i++) {
+ fac = &g_array_index (fac_ids, LttFacility, i);
+ ltt_facility_close(fac);
+ }
+
+ g_array_free(fac_ids, TRUE);
+}
-uint32_t ltt_tracefile_arch_variant(ltt_tracefile *t)
+
+/* Presumes the tracefile is already seeked at the beginning. It makes sense,
+ * because it must be done just after the opening */
+static int ltt_process_facility_tracefile(LttTracefile *tf)
{
- return t->trace_header->arch_variant;
+ int err;
+ LttFacility *fac;
+ GArray *fac_ids;
+
+ while(1) {
+ err = ltt_tracefile_read_seek(tf);
+ if(err == EPERM) goto seek_error;
+ else if(err == ERANGE) break; /* End of tracefile */
+
+ err = ltt_tracefile_read_update_event(tf);
+ if(err) goto update_error;
+
+ /* We are on a facility load/or facility unload/ or heartbeat event */
+ /* The rules are :
+ * * facility 0 is hardcoded : this is the core facility. It will be shown
+ * in the facility array though, and is shown as "loaded builtin" in the
+ * trace.
+ * It contains event :
+ * 0 : facility load
+ * 1 : facility unload
+ * 2 : state dump facility load
+ * 3 : heartbeat
+ */
+ if(tf->event.facility_id != LTT_FACILITY_CORE) {
+ /* Should only contain core facility */
+ g_warning("Error in processing facility file %s, "
+ "should not contain facility id %u.", g_quark_to_string(tf->name),
+ tf->event.facility_id);
+ err = EPERM;
+ goto fac_id_error;
+ } else {
+
+ struct LttFacilityLoad *fac_load_data;
+ struct LttStateDumpFacilityLoad *fac_state_dump_load_data;
+ char *fac_name;
+
+ // FIXME align
+ switch((enum ltt_core_events)tf->event.event_id) {
+ case LTT_EVENT_FACILITY_LOAD:
+ fac_name = (char*)(tf->event.data);
+ g_debug("Doing LTT_EVENT_FACILITY_LOAD of facility %s",
+ fac_name);
+ fac_load_data =
+ (struct LttFacilityLoad *)
+ (tf->event.data + strlen(fac_name) + 1);
+ fac = &g_array_index (tf->trace->facilities_by_num, LttFacility,
+ ltt_get_uint32(LTT_GET_BO(tf), &fac_load_data->id));
+ g_assert(fac->exists == 0);
+ fac->name = g_quark_from_string(fac_name);
+ fac->checksum = ltt_get_uint32(LTT_GET_BO(tf),
+ &fac_load_data->checksum);
+ fac->id = ltt_get_uint32(LTT_GET_BO(tf), &fac_load_data->id);
+ fac->pointer_size = ltt_get_uint32(LTT_GET_BO(tf),
+ &fac_load_data->pointer_size);
+ fac->size_t_size = ltt_get_uint32(LTT_GET_BO(tf),
+ &fac_load_data->size_t_size);
+ fac->alignment = ltt_get_uint32(LTT_GET_BO(tf),
+ &fac_load_data->alignment);
+
+ if(ltt_get_facility_description(fac, tf->trace, tf))
+ goto facility_error;
+
+ fac->trace = tf->trace;
+ fac->exists = 1;
+
+ fac_ids = g_datalist_id_get_data(&tf->trace->facilities_by_name,
+ fac->name);
+ if(fac_ids == NULL) {
+ fac_ids = g_array_sized_new (FALSE, TRUE, sizeof(guint), 1);
+ g_datalist_id_set_data_full(&tf->trace->facilities_by_name,
+ fac->name,
+ fac_ids, ltt_fac_ids_destroy);
+ }
+ g_array_append_val(fac_ids, fac->id);
+
+ break;
+ case LTT_EVENT_FACILITY_UNLOAD:
+ g_debug("Doing LTT_EVENT_FACILITY_UNLOAD");
+ /* We don't care about unload : facilities ID are valid for the whole
+ * trace. They simply won't be used after the unload. */
+ break;
+ case LTT_EVENT_STATE_DUMP_FACILITY_LOAD:
+ fac_name = (char*)(tf->event.data);
+ g_debug("Doing LTT_EVENT_STATE_DUMP_FACILITY_LOAD of facility %s",
+ fac_name);
+ fac_state_dump_load_data =
+ (struct LttStateDumpFacilityLoad *)
+ (tf->event.data + strlen(fac_name) + 1);
+ fac = &g_array_index (tf->trace->facilities_by_num, LttFacility,
+ ltt_get_uint32(LTT_GET_BO(tf), &fac_state_dump_load_data->id));
+ g_assert(fac->exists == 0);
+ fac->name = g_quark_from_string(fac_name);
+ fac->checksum = ltt_get_uint32(LTT_GET_BO(tf),
+ &fac_state_dump_load_data->checksum);
+ fac->id = fac_state_dump_load_data->id;
+ fac->pointer_size = ltt_get_uint32(LTT_GET_BO(tf),
+ &fac_state_dump_load_data->pointer_size);
+ fac->size_t_size = ltt_get_uint32(LTT_GET_BO(tf),
+ &fac_state_dump_load_data->size_t_size);
+ fac->alignment = ltt_get_uint32(LTT_GET_BO(tf),
+ &fac_state_dump_load_data->alignment);
+ if(ltt_get_facility_description(fac, tf->trace, tf))
+ goto facility_error;
+
+ fac->trace = tf->trace;
+
+ fac->exists = 1;
+
+ fac_ids = g_datalist_id_get_data(&tf->trace->facilities_by_name,
+ fac->name);
+ if(fac_ids == NULL) {
+ fac_ids = g_array_sized_new (FALSE, TRUE, sizeof(guint), 1);
+ g_datalist_id_set_data_full(&tf->trace->facilities_by_name,
+ fac->name,
+ fac_ids, ltt_fac_ids_destroy);
+ }
+ g_array_append_val(fac_ids, fac->id);
+
+ break;
+ case LTT_EVENT_HEARTBEAT:
+ break;
+ default:
+ g_warning("Error in processing facility file %s, "
+ "unknown event id %hhu in core facility.",
+ g_quark_to_string(tf->name),
+ tf->event.event_id);
+ err = EPERM;
+ goto event_id_error;
+ }
+ }
+ }
+ return 0;
+
+ /* Error handling */
+facility_error:
+event_id_error:
+fac_id_error:
+update_error:
+seek_error:
+ g_warning("An error occured in facility tracefile parsing");
+ return err;
}
-ltt_arch_size ltt_tracefile_arch_size(ltt_tracefile *t)
+
+LttTrace *ltt_trace_open(const gchar *pathname)
{
- return t->trace_header->arch_size;
+ gchar abs_path[PATH_MAX];
+ LttTrace * t;
+ LttTracefile *tf;
+ GArray *group;
+ int i;
+ struct ltt_block_start_header *header;
+
+ t = g_new(LttTrace, 1);
+ if(!t) goto alloc_error;
+
+ get_absolute_pathname(pathname, abs_path);
+ t->pathname = g_quark_from_string(abs_path);
+
+ /* Open all the tracefiles */
+ g_datalist_init(&t->tracefiles);
+ if(open_tracefiles(t, abs_path, ""))
+ goto open_error;
+
+ /* Prepare the facilities containers : array and mapping */
+ /* Array is zeroed : the "exists" field is set to false by default */
+ t->facilities_by_num = g_array_sized_new (FALSE,
+ TRUE, sizeof(LttFacility),
+ NUM_FACILITIES);
+ t->facilities_by_num = g_array_set_size(t->facilities_by_num, NUM_FACILITIES);
+
+ g_datalist_init(&t->facilities_by_name);
+
+ /* Parse each trace control/facilitiesN files : get runtime fac. info */
+ group = g_datalist_id_get_data(&t->tracefiles, LTT_TRACEFILE_NAME_FACILITIES);
+ if(group == NULL) {
+ g_error("Trace %s has no facility tracefile", abs_path);
+ g_assert(0);
+ goto facilities_error;
+ }
+
+ /* Get the trace information for the control/facility 0 tracefile */
+ g_assert(group->len > 0);
+ tf = &g_array_index (group, LttTracefile, 0);
+ header = (struct ltt_block_start_header*)tf->buffer.head;
+ t->arch_type = ltt_get_uint32(LTT_GET_BO(tf), &header->trace.arch_type);
+ t->arch_variant = ltt_get_uint32(LTT_GET_BO(tf), &header->trace.arch_variant);
+ t->arch_size = header->trace.arch_size;
+ t->ltt_major_version = header->trace.major_version;
+ t->ltt_minor_version = header->trace.minor_version;
+ t->flight_recorder = header->trace.flight_recorder;
+ t->has_heartbeat = header->trace.has_heartbeat;
+ t->has_alignment = header->trace.has_alignment;
+ t->has_tsc = header->trace.has_tsc;
+
+
+ for(i=0; i<group->len; i++) {
+ tf = &g_array_index (group, LttTracefile, i);
+ if(ltt_process_facility_tracefile(tf))
+ goto facilities_error;
+ }
+
+ return t;
+
+ /* Error handling */
+facilities_error:
+ g_datalist_clear(&t->facilities_by_name);
+ g_array_free(t->facilities_by_num, TRUE);
+open_error:
+ g_datalist_clear(&t->tracefiles);
+ g_free(t);
+alloc_error:
+ return NULL;
+
}
-ltt_arch_endian ltt_tracefile_arch_endian(ltt_tracefile *t)
+GQuark ltt_trace_name(LttTrace *t)
{
- return t->trace_header->arch_endian;
-}
+ return t->pathname;
+}
-uint32_t ltt_tracefile_system_type(ltt_tracefile *t)
+
+/******************************************************************************
+ * When we copy a trace, we want all the opening actions to happen again :
+ * the trace will be reopened and totally independant from the original.
+ * That's why we call ltt_trace_open.
+ *****************************************************************************/
+LttTrace *ltt_trace_copy(LttTrace *self)
{
- return t->trace_header->system_type;
+ return ltt_trace_open(g_quark_to_string(self->pathname));
}
-char *ltt_tracefile_system_name(ltt_tracefile *t)
+void ltt_trace_close(LttTrace *t)
{
- return t->trace_header->system_name;
+ g_datalist_clear(&t->facilities_by_name);
+ g_array_free(t->facilities_by_num, TRUE);
+ g_datalist_clear(&t->tracefiles);
+ g_free(t);
}
+
/*****************************************************************************
- *Function name
- * ltt_tracefile_cpu_number: get the number of the cpu
- *Input params
- * t : tracefile
- *Return value
- * unsigned : the number of cpu the system has
+ *Get the system description of the trace
****************************************************************************/
-unsigned ltt_tracefile_cpu_number(ltt_tracefile *t)
+LttFacility *ltt_trace_facility_by_id(LttTrace *t, guint8 id)
{
- return (unsigned)(t->trace_header->cpu_number);
+ g_assert(id < t->facilities_by_num->len);
+ return &g_array_index(t->facilities_by_num, LttFacility, id);
+}
+
+/* ltt_trace_facility_get_by_name
+ *
+ * Returns the GArray of facility indexes. All the fac_ids that matches the
+ * requested facility name.
+ *
+ * If name is not found, returns NULL.
+ */
+GArray *ltt_trace_facility_get_by_name(LttTrace *t, GQuark name)
+{
+ return g_datalist_id_get_data(&t->facilities_by_name, name);
}
/*****************************************************************************
- *Function name
- * ltt_tracefile_cpu_single: does the tracefile contain events only for a
- * single CPU ?
- *Input params
- * t : tracefile
- *Return value
- * int : 1 for YES, 0 for NO
+ * Functions to discover all the event types in the trace
****************************************************************************/
-int ltt_tracefile_cpu_single(ltt_tracefile *t)
+#if 0
+unsigned ltt_trace_eventtype_number(LttTrace *t)
{
- if(t->trace_header->cpu_number_used == 1) return 1;
- else return 0;
+ unsigned int i;
+ unsigned count = 0;
+ unsigned int num = t->facility_number;
+ LttFacility * f;
+
+ for(i=0;i<num;i++){
+ f = (LttFacility*)g_ptr_array_index(t->facilities, i);
+ count += f->event_number;
+ }
+ return count;
+}
+#endif //0
+
+#if 0
+//use an iteration on all the trace facilities, and inside iteration on all the
+//event types in each facilities instead.
+LttEventType *ltt_trace_eventtype_get(LttTrace *t, unsigned evId)
+{
+ LttEventType *event_type;
+
+ LttFacility * f;
+ f = ltt_trace_facility_by_id(t,evId);
+
+ if(unlikely(!f)) event_type = NULL;
+ else event_type = f->events[evId - f->base_id];
+
+ return event_type;
}
+#endif //0
+#if 0
/*****************************************************************************
- *Function name
- * ltt_tracefile_cpu_id: which CPU is contained in the tracefile?
- *Input params
- * t : tracefile
- *Return value
- * unsigned : cpu id
+ * ltt_trace_find_tracefile
+ *
+ * Find a tracefile by name and index in the group.
+ *
+ * Returns a pointer to the tracefiles, else NULL.
****************************************************************************/
-unsigned ltt_tracefile_cpu_id(ltt_tracefile *t)
+LttTracefile *ltt_trace_find_tracefile(LttTrace *t, const gchar *name)
{
- return (unsigned)(t->trace_header->cpu_id);
}
+#endif //0
/*****************************************************************************
- * The following functions get the times related to the tracefile
+ * Get the start time and end time of the trace
****************************************************************************/
-ltt_time ltt_tracefile_time_start(ltt_tracefile *t)
+static void ltt_tracefile_time_span_get(LttTracefile *tf,
+ LttTime *start, LttTime *end)
{
- return t->start_time;
+ struct ltt_block_start_header * header;
+ int err;
+
+ err = map_block(tf, 0);
+ if(unlikely(err)) {
+ g_error("Can not map block");
+ *start = ltt_time_infinite;
+ } else
+ *start = tf->buffer.begin.timestamp;
+
+ err = map_block(tf, tf->num_blocks - 1); /* Last block */
+ if(unlikely(err)) {
+ g_error("Can not map block");
+ *end = ltt_time_zero;
+ } else
+ *end = tf->buffer.end.timestamp;
}
-ltt_time ltt_tracefile_time_end(ltt_tracefile *t)
+struct tracefile_time_span_get_args {
+ LttTrace *t;
+ LttTime *start;
+ LttTime *end;
+};
+
+static void group_time_span_get(GQuark name, gpointer data, gpointer user_data)
{
- return t->end_time;
+ struct tracefile_time_span_get_args *args =
+ (struct tracefile_time_span_get_args*)user_data;
+
+ GArray *group = (GArray *)data;
+ int i;
+ LttTracefile *tf;
+ LttTime tmp_start;
+ LttTime tmp_end;
+
+ for(i=0; i<group->len; i++) {
+ tf = &g_array_index (group, LttTracefile, i);
+ if(tf->cpu_online) {
+ ltt_tracefile_time_span_get(tf, &tmp_start, &tmp_end);
+ if(ltt_time_compare(*args->start, tmp_start)>0) *args->start = tmp_start;
+ if(ltt_time_compare(*args->end, tmp_end)<0) *args->end = tmp_end;
+ }
+ }
}
-ltt_time ltt_tracefile_duration(ltt_tracefile *t)
+void ltt_trace_time_span_get(LttTrace *t, LttTime *start, LttTime *end)
{
- ltt_time T;
- TimeSub(T, t->end_time, t->start_time);
- return T;
+ LttTime min_start = ltt_time_infinite;
+ LttTime max_end = ltt_time_zero;
+ struct tracefile_time_span_get_args args = { t, &min_start, &max_end };
+
+ g_datalist_foreach(&t->tracefiles, &group_time_span_get, &args);
+
+ if(start != NULL) *start = min_start;
+ if(end != NULL) *end = max_end;
+
}
+
/*****************************************************************************
- * The following functions discover the facilities added to the tracefile
+ *Get the name of a tracefile
****************************************************************************/
-unsigned ltt_tracefile_facility_number(ltt_tracefile *t)
+GQuark ltt_tracefile_name(LttTracefile *tf)
{
- return (unsigned)(t->facility_number);
+ return tf->name;
}
-ltt_facility *ltt_tracefile_facility_get(ltt_tracefile *t, unsigned i)
+/*****************************************************************************
+ * Get the number of blocks in the tracefile
+ ****************************************************************************/
+
+guint ltt_tracefile_block_number(LttTracefile *tf)
{
- gconstpointer ptr = (gconstpointer)(&i);
- if(i<=0 || i> t->facility_number)return NULL;
- return (ltt_facility*)g_hash_table_lookup(t->index_facility,ptr);
+ return tf->num_blocks;
}
-ltt_facility *ltt_tracefile_facility_get_by_name(ltt_tracefile *t,char *name)
+
+/* Seek to the first event in a tracefile that has a time equal or greater than
+ * the time passed in parameter.
+ *
+ * If the time parameter is outside the tracefile time span, seek to the first
+ * or the last event of the tracefile.
+ *
+ * If the time parameter is before the first event, we have to seek specially to
+ * there.
+ *
+ * If the time is after the end of the trace, get the last event.
+ *
+ * Do a binary search to find the right block, then a sequential search in the
+ * block to find the event.
+ *
+ * In the special case where the time requested fits inside a block that has no
+ * event corresponding to the requested time, the first event of the next block
+ * will be seeked.
+ *
+ * IMPORTANT NOTE : // FIXME everywhere...
+ *
+ * You MUST NOT do a ltt_tracefile_read right after a ltt_tracefile_seek_time :
+ * you will jump over an event if you do.
+ *
+ * Return value : 0 : no error, the tf->event can be used
+ * otherwise : this is an error.
+ *
+ * */
+
+int ltt_tracefile_seek_time(LttTracefile *tf, LttTime time)
{
- ltt_facility * fac;
- fac=(ltt_facility*)g_hash_table_lookup(t->facility_name,(gconstpointer)name);
- return fac;
+ int ret = 0;
+ int err;
+ unsigned int block_num, high, low;
+
+ /* seek at the beginning of trace */
+ err = map_block(tf, 0); /* First block */
+ if(unlikely(err)) {
+ g_error("Can not map block");
+ goto fail;
+ }
+
+ /* If the time is lower or equal the beginning of the trace,
+ * go to the first event. */
+ if(ltt_time_compare(time, tf->buffer.begin.timestamp) <= 0) {
+ ret = ltt_tracefile_read(tf);
+ goto found; /* There is either no event in the trace or the event points
+ to the first event in the trace */
+ }
+
+ err = map_block(tf, tf->num_blocks - 1); /* Last block */
+ if(unlikely(err)) {
+ g_error("Can not map block");
+ goto fail;
+ }
+
+ /* If the time is after the end of the trace, get the last event. */
+ if(ltt_time_compare(time, tf->buffer.end.timestamp) >= 0) {
+ /* While the ltt_tracefile_read doesn't return ERANGE or EPERM,
+ * continue reading.
+ */
+ while(1) {
+ ret = ltt_tracefile_read(tf);
+ if(ret == ERANGE) goto found; /* ERANGE or EPERM */
+ else if(ret) goto fail;
+ }
+ }
+
+ /* Binary search the block */
+ high = tf->num_blocks - 1;
+ low = 0;
+
+ while(1) {
+ block_num = ((high-low) / 2) + low;
+
+ err = map_block(tf, block_num);
+ if(unlikely(err)) {
+ g_error("Can not map block");
+ goto fail;
+ }
+ if(high == low) {
+ /* We cannot divide anymore : this is what would happen if the time
+ * requested was exactly between two consecutive buffers'end and start
+ * timestamps. This is also what would happend if we didn't deal with out
+ * of span cases prior in this function. */
+ /* The event is right in the buffer!
+ * (or in the next buffer first event) */
+ while(1) {
+ ret = ltt_tracefile_read(tf);
+ if(ret == ERANGE) goto found; /* ERANGE or EPERM */
+ else if(ret) goto fail;
+
+ if(ltt_time_compare(time, tf->event.event_time) >= 0)
+ break;
+ }
+
+ } if(ltt_time_compare(time, tf->buffer.begin.timestamp) < 0) {
+ /* go to lower part */
+ high = block_num;
+ } else if(ltt_time_compare(time, tf->buffer.end.timestamp) > 0) {
+ /* go to higher part */
+ low = block_num;
+ } else {/* The event is right in the buffer!
+ (or in the next buffer first event) */
+ while(1) {
+ ltt_tracefile_read(tf);
+ if(ret == ERANGE) goto found; /* ERANGE or EPERM */
+ else if(ret) goto fail;
+
+ if(ltt_time_compare(time, tf->event.event_time) >= 0)
+ break;
+ }
+ goto found;
+ }
+ }
+
+found:
+ return 0;
+
+ /* Error handling */
+fail:
+ g_error("ltt_tracefile_seek_time failed on tracefile %s",
+ g_quark_to_string(tf->name));
+ return EPERM;
}
-/*****************************************************************************
- * The following functions to discover all the event types in the facilities
- * added to the tracefile. The event type integer id, unique for the trace,
- * is used
- ****************************************************************************/
-unsigned ltt_tracefile_eventtype_number(ltt_tracefile *t)
-{
- return t->eventtype_number;
+int ltt_tracefile_seek_position(LttTracefile *tf, const LttEventPosition *ep) {
+
+ int err;
+
+ if(ep->tracefile != tf) {
+ goto fail;
+ }
+
+ err = map_block(tf, ep->block);
+ if(unlikely(err)) {
+ g_error("Can not map block");
+ goto fail;
+ }
+
+ tf->event.offset = ep->offset;
+
+ err = ltt_tracefile_read_update_event(tf);
+ if(err) goto fail;
+ err = ltt_tracefile_read_op(tf);
+ if(err) goto fail;
+
+ return;
+
+fail:
+ g_error("ltt_tracefile_seek_time failed on tracefile %s",
+ g_quark_to_string(tf->name));
}
-ltt_eventtype *ltt_tracefile_eventtype_get(ltt_tracefile *t, unsigned evId)
+/* Calculate the real event time based on the buffer boundaries */
+LttTime ltt_interpolate_time(LttTracefile *tf, LttEvent *event)
{
- ptr_wrap * ptr;
- ptr = (ptr_wrap *)g_ptr_array_index(t->eventtype_event_id, (gint)evId);
- return (ltt_eventtype *)(ptr->ptr);
+ LttTime time;
+
+ g_assert(tf->trace->has_tsc);
+
+ time = ltt_time_from_uint64(
+ (guint64)tf->buffer.tsc*tf->buffer.nsecs_per_cycle);
+ time = ltt_time_add(tf->buffer.begin.timestamp, time);
+
+ return time;
}
-/*****************************************************************************
- *Function name
- * ltt_tracefile_eventtype_id
- * : given an event type, find its unique id within
- * the tracefile
- *Input params
- * t : tracefile
- * et : event type
- *Return value
- * unsigned : id of the event type in the tracefile
- ****************************************************************************/
-unsigned ltt_tracefile_eventtype_id(ltt_tracefile *t, ltt_eventtype *et)
+/* Get the current event of the tracefile : valid until the next read */
+LttEvent *ltt_tracefile_get_event(LttTracefile *tf)
{
- int *id;
- char *name = et->facility->name;
-
- id = (int*)g_hash_table_lookup(t->base_id_name, (gconstpointer)name);
- if(!id)return 0;
- return (unsigned)(*id + et->index);
+ return &tf->event;
}
+
+
/*****************************************************************************
*Function name
- * ltt_tracefile_eventtype_root_field
- * : get the root field associated with an event type
- * for the tracefile
+ * ltt_tracefile_read : Read the next event in the tracefile
*Input params
- * t : tracefile
- * id : event id
+ * t : tracefile
*Return value
- * ltt_field * : root field of the event
+ *
+ * Returns 0 if an event can be used in tf->event.
+ * Returns ERANGE on end of trace. The event in tf->event still can be used.
+ * Returns EPERM on error.
+ *
+ * This function does make the tracefile event structure point to the event
+ * currently pointed to by the tf->event.
+ *
+ * Note : you must call a ltt_tracefile_seek to the beginning of the trace to
+ * reinitialize it after an error if you want results to be coherent.
+ * It would be the case if a end of trace last buffer has no event : the end
+ * of trace wouldn't be returned, but an error.
+ * We make the assumption there is at least one event per buffer.
****************************************************************************/
-ltt_field *ltt_tracefile_eventtype_root_field(ltt_tracefile *t, unsigned id)
+int ltt_tracefile_read(LttTracefile *tf)
{
- ltt_eventtype * et;
- et = ltt_tracefile_eventtype_get(t, id);
- if(!et) return NULL;
- return et->root_field;
-}
+ int err;
-/*****************************************************************************
- *Function name
- * ltt_tracefile_seek_time: seek to the first event of the trace with time
- * larger or equal to time
- *Input params
- * t : tracefile
- * time : criteria of the time
- *Return value
- * int : error code
- * ENOENT, end of the file
- * EINVAL, lseek fail
- * EIO, can not read from the file
- ****************************************************************************/
+ err = ltt_tracefile_read_seek(tf);
+ if(err) return err;
+ err = ltt_tracefile_read_update_event(tf);
+ if(err) return err;
+ err = ltt_tracefile_read_op(tf);
+ if(err) return err;
-int ltt_tracefile_seek_time(ltt_tracefile *t, ltt_time time)
+ return 0;
+}
+
+int ltt_tracefile_read_seek(LttTracefile *tf)
{
int err;
- ltt_time lttTime;
- int headTime = timecmp(&(t->a_block_header->time), &time);
- int tailTime = timecmp(&(t->a_block_footer->time), &time);
-
- if(headTime < 0 && tailTime > 0){
- lttTime = getEventTime(t);
- err = timecmp(<tTime, &time);
- if(err >= 0){
- if( ( (t->which_block != 1 && t->which_event != 0) ||
- (t->which_block == 1 && t->which_event != 1) ) &&
- ((t->prev_event_time.tv_sec==0 && t->prev_event_time.tv_nsec==0) ||
- timecmp(&t->prev_event_time, &time) >= 0 ) ){
- updateTracefile(t);
- return ltt_tracefile_seek_time(t, time);
- }
- }else if(err < 0){
- err = t->which_block;
- if(ltt_tracefile_read(t) == NULL) return ENOENT;
- if(t->which_block == err)
- return ltt_tracefile_seek_time(t,time);
- }
- }else if(headTime > 0){
- if(t->which_block == 1){
- updateTracefile(t);
- }else{
- if( (t->prev_block_end_time.tv_sec == 0 &&
- t->prev_block_end_time.tv_nsec == 0 ) ||
- timecmp(&(t->prev_block_end_time),&time) > 0 ){
- err=readBlock(t,t->which_block-1);
- if(err) return err;
- return ltt_tracefile_seek_time(t, time) ;
- }else{
- updateTracefile(t);
- }
+
+ /* Get next buffer until we finally have an event, or end of trace */
+ while(1) {
+ err = ltt_seek_next_event(tf);
+ if(unlikely(err == ENOPROTOOPT)) {
+ return EPERM;
}
- }else if(tailTime <= 0){
- if(t->which_block != t->block_number){
- err=readBlock(t,t->which_block+1);
- if(err) return err;
- }else return ENOENT;
- if(tailTime < 0) return ltt_tracefile_seek_time(t, time);
- }else if(headTime == 0){
- updateTracefile(t);
+
+ /* Are we at the end of the buffer ? */
+ if(err == ERANGE) {
+ if(unlikely(tf->buffer.index == tf->num_blocks-1)){ /* end of trace ? */
+ return ERANGE;
+ } else {
+ /* get next block */
+ err = map_block(tf, tf->buffer.index + 1);
+ if(unlikely(err)) {
+ g_error("Can not map block");
+ return EPERM;
+ }
+ }
+ } else break; /* We found an event ! */
}
+
return 0;
}
-/*****************************************************************************
- *Function name
- * ltt_tracefile_read : read the next event
- *Input params
- * t : tracefile
- *Return value
- * ltt_event * : an event to be processed
- ****************************************************************************/
-ltt_event *ltt_tracefile_read(ltt_tracefile *t)
+/* do specific operation on events */
+int ltt_tracefile_read_op(LttTracefile *tf)
{
- ltt_event * lttEvent = (ltt_event *)g_new(ltt_event, 1);
- ltt_eventtype * evT;
- ltt_facility * fac;
-
- //update the fields of the current event and go to the next event
- if(skipEvent(t)) return NULL;
+ int err;
+ LttFacility *f;
+ void * pos;
+ LttEvent *event;
- t->current_event_time = getEventTime(t);
+ event = &tf->event;
- lttEvent->event_id = (int)(*(uint8_t *)(t->cur_event_pos));
- evT = ltt_tracefile_eventtype_get(t, (unsigned)lttEvent->event_id);
- fac = evT->facility;
- // if(evT->index == TRACE_EV_HEARTBEAT && strcmp(fac->name, "default")==0)
- // t->cur_heart_beat_number++;
- lttEvent->cycle_count=*(uint32_t*)(t->cur_event_pos + EVENT_ID_SIZE);
- lttEvent->tracefile = t;
- lttEvent->data = t->cur_event_pos + EVENT_HEADER_SIZE;
+ /* do event specific operation */
- return lttEvent;
+ /* do something if its an heartbeat event : increment the heartbeat count */
+ //if(event->facility_id == LTT_FACILITY_CORE)
+ // if(event->event_id == LTT_EVENT_HEARTBEAT)
+ // tf->cur_heart_beat_number++;
+
+ return 0;
}
-/****************************************************************************
- *Function name
- * readFile : wrap function to read from a file
- *Input Params
- * fd : file descriptor
- * buf : buf to contain the content
- * size : number of bytes to be read
- * mesg : message to be printed if some thing goes wrong
- *return value
- * 0 : success
- * EIO : can not read from the file
- ****************************************************************************/
-int readFile(int fd, void * buf, size_t size, char * mesg)
+/* same as ltt_tracefile_read, but does not seek to the next event nor call
+ * event specific operation. */
+int ltt_tracefile_read_update_event(LttTracefile *tf)
{
- ssize_t nbBytes;
- nbBytes = read(fd, buf, size);
- if(nbBytes != size){
- printf("%s\n",mesg);
- return EIO;
- }
- return 0;
+ int err;
+ LttFacility *f;
+ void * pos;
+ LttEvent *event;
+
+ event = &tf->event;
+ pos = tf->buffer.head + event->offset;
+
+ /* Read event header */
+
+ //TODO align
+
+ if(tf->trace->has_tsc) {
+ if(tf->trace->has_heartbeat) {
+ event->time.timestamp = ltt_get_uint32(LTT_GET_BO(tf),
+ pos);
+ /* 32 bits -> 64 bits tsc */
+ /* note : still works for seek and non seek cases. */
+ if(event->time.timestamp < (0xFFFFFFFFULL&tf->buffer.tsc)) {
+ tf->buffer.tsc = ((tf->buffer.tsc&0xFFFFFFFF00000000ULL)
+ + 0x100000000ULL)
+ | (guint64)event->time.timestamp;
+ event->tsc = tf->buffer.tsc;
+ } else {
+ /* no overflow */
+ tf->buffer.tsc = (tf->buffer.tsc&0xFFFFFFFF00000000ULL)
+ | (guint64)event->time.timestamp;
+ event->tsc = tf->buffer.tsc;
+ }
+ pos += sizeof(guint32);
+ } else {
+ event->tsc = ltt_get_uint64(LTT_GET_BO(tf), pos);
+ tf->buffer.tsc = event->tsc;
+ pos += sizeof(guint64);
+ }
+
+ event->event_time = ltt_interpolate_time(tf, event);
+ } else {
+ event->time.delta.tv_sec = 0;
+ event->time.delta.tv_nsec = ltt_get_uint32(LTT_GET_BO(tf),
+ pos) * NSEC_PER_USEC;
+ tf->buffer.tsc = 0;
+ event->tsc = tf->buffer.tsc;
+
+ event->event_time = ltt_time_add(tf->buffer.begin.timestamp,
+ event->time.delta);
+ pos += sizeof(guint32);
+ }
+
+ event->facility_id = *(guint8*)pos;
+ pos += sizeof(guint8);
+
+ event->event_id = *(guint8*)pos;
+ pos += sizeof(guint8);
+
+ event->event_size = ltt_get_uint16(LTT_GET_BO(tf), pos);
+ pos += sizeof(guint16);
+
+ event->data = pos;
+
+ /* get the data size and update the event fields with the current
+ * information */
+ ltt_update_event_size(tf);
+
+ return 0;
}
+
/****************************************************************************
*Function name
- * readBlock : read a block from the file
+ * map_block : map a block from the file
*Input Params
* lttdes : ltt trace file
* whichBlock : the block which will be read
* EIO : can not read from the file
****************************************************************************/
-int readBlock(ltt_tracefile * tf, int whichBlock)
+static gint map_block(LttTracefile * tf, guint block_num)
{
- off_t nbBytes;
- uint32_t lostSize;
+ int page_size = getpagesize();
+ struct ltt_block_start_header *header;
- if(whichBlock - tf->which_block == 1 && tf->which_block != 0){
- tf->prev_block_end_time = tf->a_block_footer->time;
- }else{
- tf->prev_block_end_time.tv_sec = 0;
- tf->prev_block_end_time.tv_nsec = 0;
- }
- tf->prev_event_time.tv_sec = 0;
- tf->prev_event_time.tv_nsec = 0;
+ g_assert(block_num < tf->num_blocks);
- nbBytes=lseek(tf->fd,(off_t)((whichBlock-1)*tf->trace_header->buffer_size),
- SEEK_SET);
- if(nbBytes == -1) return EINVAL;
+ if(tf->buffer.head != NULL)
+ munmap(tf->buffer.head, PAGE_ALIGN(tf->buf_size));
- if(readFile(tf->fd,tf->buffer,tf->trace_header->buffer_size,
- "Unable to read a block")) return EIO;
-
-
- tf->a_block_header=(block_header *) tf->buffer;
- lostSize = *(uint32_t*)(tf->buffer + tf->trace_header->buffer_size
- - sizeof(uint32_t));
- /* skip event ID and time delta to get the address of the block foot */
- tf->a_block_footer=(block_footer *)(tf->buffer+tf->trace_header->buffer_size
- -lostSize+sizeof(uint8_t)+sizeof(uint32_t));
- tf->which_block = whichBlock;
- tf->which_event = 0;
- tf->first_event_pos = tf->buffer + sizeof(block_header);
- if(tf->which_block == 1){
- tf->which_event++;
- tf->first_event_pos += sizeof(trace_header_event);
+ /* Multiple of pages aligned head */
+ tf->buffer.head = mmap(0,
+ PAGE_ALIGN(tf->block_size),
+ PROT_READ, MAP_PRIVATE, tf->fd,
+ PAGE_ALIGN((off_t)tf->block_size * (off_t)block_num));
+
+ if(tf->buffer.head == MAP_FAILED) {
+ perror("Error in allocating memory for buffer of tracefile");
+ g_assert(0);
+ goto map_error;
}
- tf->cur_event_pos = tf->first_event_pos;
- tf->current_event_time = tf->a_block_header->time;
- tf->cur_heart_beat_number = 0;
+ g_assert( ( (guint)tf->buffer.head&(8-1) ) == 0); // make sure it's aligned.
- getCyclePerNsec(tf);
- return 0;
-}
+ tf->buffer.index = block_num;
+
+ header = (struct ltt_block_start_header*)tf->buffer.head;
+
+ tf->buffer.begin.timestamp = ltt_get_time(LTT_GET_BO(tf),
+ &header->begin.timestamp);
+ tf->buffer.begin.timestamp.tv_nsec *= NSEC_PER_USEC;
+ tf->buffer.begin.cycle_count = ltt_get_uint64(LTT_GET_BO(tf),
+ &header->begin.cycle_count);
+ tf->buffer.end.timestamp = ltt_get_time(LTT_GET_BO(tf),
+ &header->end.timestamp);
+ tf->buffer.end.timestamp.tv_nsec *= NSEC_PER_USEC;
+ tf->buffer.end.cycle_count = ltt_get_uint64(LTT_GET_BO(tf),
+ &header->end.cycle_count);
+ tf->buffer.lost_size = ltt_get_uint32(LTT_GET_BO(tf),
+ &header->lost_size);
+
+ tf->buffer.tsc = tf->buffer.begin.cycle_count;
+ tf->event.tsc = tf->buffer.tsc;
+
+ /* FIXME
+ * eventually support variable buffer size : will need a partial pre-read of
+ * the headers to create an index when we open the trace... eventually. */
+ g_assert(tf->block_size == ltt_get_uint32(LTT_GET_BO(tf),
+ &header->buf_size));
+
+ /* Now that the buffer is mapped, calculate the time interpolation for the
+ * block. */
+
+ tf->buffer.nsecs_per_cycle = calc_nsecs_per_cycle(tf);
+
+ /* Make the current event point to the beginning of the buffer :
+ * it means that the event read must get the first event. */
+ tf->event.tracefile = tf;
+ tf->event.block = block_num;
+ tf->event.offset = 0;
+
+ return 0;
-/*****************************************************************************
- *Function name
- * updateTracefile : reinitialize the info of the block which is already
- * in the buffer
- *Input params
- * tf : tracefile
- ****************************************************************************/
+map_error:
+ return -errno;
+
+}
-void updateTracefile(ltt_tracefile * tf)
+/* It will update the fields offsets too */
+void ltt_update_event_size(LttTracefile *tf)
{
- if(tf->which_block == 1)tf->which_event = 1;
- else tf->which_event = 0;
- tf->cur_event_pos = tf->first_event_pos;
- tf->current_event_time = tf->a_block_header->time;
- tf->cur_heart_beat_number = 0;
+ ssize_t size = 0;
+
+ /* Specific handling of core events : necessary to read the facility control
+ * tracefile. */
+ LttFacility *f = ltt_trace_get_facility_by_num(tf->trace,
+ tf->event.facility_id);
+
+ if(likely(tf->event.facility_id == LTT_FACILITY_CORE)) {
+ switch((enum ltt_core_events)tf->event.event_id) {
+ case LTT_EVENT_FACILITY_LOAD:
+ size = strlen((char*)tf->event.data) + 1;
+ g_debug("Update Event facility load of facility %s", (char*)tf->event.data);
+ size += sizeof(struct LttFacilityLoad);
+ break;
+ case LTT_EVENT_FACILITY_UNLOAD:
+ g_debug("Update Event facility unload");
+ size = sizeof(struct LttFacilityUnload);
+ break;
+ case LTT_EVENT_STATE_DUMP_FACILITY_LOAD:
+ size = strlen((char*)tf->event.data) + 1;
+ g_debug("Update Event facility load state dump of facility %s",
+ (char*)tf->event.data);
+ size += sizeof(struct LttStateDumpFacilityLoad);
+ break;
+ case LTT_EVENT_HEARTBEAT:
+ g_debug("Update Event heartbeat");
+ size = sizeof(TimeHeartbeat);
+ break;
+ default:
+ g_warning("Error in getting event size : tracefile %s, "
+ "unknown event id %hhu in core facility.",
+ g_quark_to_string(tf->name),
+ tf->event.event_id);
+ goto event_id_error;
- tf->prev_event_time.tv_sec = 0;
- tf->prev_event_time.tv_nsec = 0;
-}
+ }
+ } else {
+ if(!f->exists) {
+ g_error("Unknown facility %hhu (0x%hhx) in tracefile %s",
+ tf->event.facility_id,
+ tf->event.facility_id,
+ g_quark_to_string(tf->name));
+ goto facility_error;
+ }
-/*****************************************************************************
- *Function name
- * skipEvent : go to the next event, update the fields of the current event
- *Input params
- * t : tracefile
- *return value
- * 0 : success
- * EINVAL : lseek fail
- * EIO : can not read from the file
- * ENOENT : end of file
- * ERANGE : event id is out of range
- ****************************************************************************/
+ LttEventType *event_type =
+ ltt_facility_eventtype_get(f, tf->event.event_id);
-int skipEvent(ltt_tracefile * t)
-{
- int evId, err;
- void * evData;
- ltt_eventtype * evT;
- ltt_field * rootFld;
+ if(!event_type) {
+ g_error("Unknown event id %hhu in facility %s in tracefile %s",
+ tf->event.event_id,
+ g_quark_to_string(f->name),
+ g_quark_to_string(tf->name));
+ goto event_type_error;
+ }
- evId = (int)(*(uint8_t *)(t->cur_event_pos));
- evData = t->cur_event_pos + EVENT_HEADER_SIZE;
- evT = ltt_tracefile_eventtype_get(t,(unsigned)evId);
+ size = get_field_type_size(tf, event_type,
+ 0, 0, event_type->root_field, tf->event.data);
+ g_debug("Event root field : f.e %hhu.%hhu size %lu", tf->event.facility_id,
+ tf->event.event_id, size);
+ }
+
+ tf->event.data_size = size;
+
+ /* Check consistency between kernel and LTTV structure sizes */
+ g_assert(tf->event.data_size == tf->event.event_size);
+
+ return;
+
+facility_error:
+event_type_error:
+event_id_error:
+ tf->event.data_size = 0;
+}
- if(evT) rootFld = evT->root_field;
- else return ERANGE;
- t->prev_event_time = getEventTime(t);
+/* Take the tf current event offset and use the event facility id and event id
+ * to figure out where is the next event offset.
+ *
+ * This is an internal function not aiming at being used elsewhere : it will
+ * not jump over the current block limits. Please consider using
+ * ltt_tracefile_read to do this.
+ *
+ * Returns 0 on success
+ * ERANGE if we are at the end of the buffer.
+ * ENOPROTOOPT if an error occured when getting the current event size.
+ */
+static int ltt_seek_next_event(LttTracefile *tf)
+{
+ int ret = 0;
+ void *pos;
+ ssize_t event_size;
- //event has string/sequence or the last event is not the same event
- if((evT->latest_block!=t->which_block || evT->latest_event!=t->which_event)
- && rootFld->field_fixed == 0){
- setFieldsOffset(t, evT, evData);
+ /* seek over the buffer header if we are at the buffer start */
+ if(tf->event.offset == 0) {
+ tf->event.offset += sizeof(struct ltt_block_start_header);
+
+ if(tf->event.offset == tf->block_size - tf->buffer.lost_size) {
+ ret = ERANGE;
+ }
+ goto found;
}
- t->cur_event_pos += EVENT_HEADER_SIZE + rootFld->field_size;
- evT->latest_block = t->which_block;
- evT->latest_event = t->which_event;
- //the next event is in the next block
- if(t->which_event == t->a_block_header->event_count - 1){
- if(t->which_block == t->block_number) return ENOENT;
- err = readBlock(t, t->which_block + 1);
- if(err) return err;
- }else{
- t->which_event++;
+ if(tf->event.offset == tf->block_size - tf->buffer.lost_size) {
+ ret = ERANGE;
+ goto found;
}
- return 0;
+ pos = tf->event.data;
+
+ if(tf->event.data_size < 0) goto error;
+
+ pos += (size_t)tf->event.data_size;
+
+ tf->event.offset = pos - tf->buffer.head;
+
+found:
+ return ret;
+
+error:
+ g_error("Error in ltt_seek_next_event for tracefile %s",
+ g_quark_to_string(tf->name));
+ return ENOPROTOOPT;
}
+
/*****************************************************************************
*Function name
- * getCyclePerNsec : calculate cycles per nsec for current block
+ * calc_nsecs_per_cycle : calculate nsecs per cycle for current block
*Input Params
* t : tracefile
****************************************************************************/
-void getCyclePerNsec(ltt_tracefile * t)
+static double calc_nsecs_per_cycle(LttTracefile * tf)
{
- ltt_time lBufTotalTime; /* Total time for this buffer */
- ltt_cycle_count lBufTotalNSec; /* Total time for this buffer in nsecs */
- ltt_cycle_count lBufTotalCycle;/* Total cycles for this buffer */
+ LttTime lBufTotalTime; /* Total time for this buffer */
+ double lBufTotalNSec; /* Total time for this buffer in nsecs */
+ LttCycleCount lBufTotalCycle;/* Total cycles for this buffer */
/* Calculate the total time for this buffer */
- TimeSub(lBufTotalTime,t->a_block_footer->time, t->a_block_header->time);
+ lBufTotalTime = ltt_time_sub(
+ ltt_get_time(LTT_GET_BO(tf), &tf->buffer.end.timestamp),
+ ltt_get_time(LTT_GET_BO(tf), &tf->buffer.begin.timestamp));
/* Calculate the total cycles for this bufffer */
- lBufTotalCycle = t->a_block_footer->cycle_count
- - t->a_block_header->cycle_count;
+ lBufTotalCycle = ltt_get_uint64(LTT_GET_BO(tf), &tf->buffer.end.cycle_count);
+ lBufTotalCycle -= ltt_get_uint64(LTT_GET_BO(tf),
+ &tf->buffer.begin.cycle_count);
- /* Convert the total time to nsecs */
- lBufTotalNSec = lBufTotalTime.tv_sec * 1000000000 + lBufTotalTime.tv_nsec;
+ /* Convert the total time to double */
+ lBufTotalNSec = ltt_time_to_double(lBufTotalTime);
- t->cycle_per_nsec = (double)lBufTotalCycle / (double)lBufTotalNSec;
+ return lBufTotalNSec / (double)lBufTotalCycle;
+
}
+#if 0
+void setFieldsOffset(LttTracefile *tf, LttEventType *evT,void *evD)
+{
+ LttField * rootFld = evT->root_field;
+ // rootFld->base_address = evD;
-/****************************************************************************
+ if(likely(rootFld))
+ rootFld->field_size = getFieldtypeSize(tf, evT->facility,
+ evT, 0,0,rootFld, evD);
+}
+#endif //0
+
+/*****************************************************************************
*Function name
- * getEventTime : obtain the time of an event
+ * set_fields_offsets : set the precomputable offset of the fields
*Input params
- * tf : tracefile
- *Return value
- * ltt_time : the time of the event
+ * tracefile : opened trace file
+ * event_type : the event type
****************************************************************************/
-ltt_time getEventTime(ltt_tracefile * tf)
+void set_fields_offsets(LttTracefile *tf, LttEventType *event_type)
{
- ltt_time time;
- ltt_cycle_count cycle_count; /* cycle count for the current event */
- ltt_cycle_count lEventTotalCycle; /* Total cycles from start for event */
- double lEventNSec; /* Total usecs from start for event */
- ltt_time lTimeOffset; /* Time offset in struct ltt_time */
-
- /* Calculate total time in cycles from start of buffer for this event */
- cycle_count = *(uint32_t*)(tf->cur_event_pos + EVENT_ID_SIZE);
- if(tf->cur_heart_beat_number)
- cycle_count += ((uint64_t)1)<<32 * tf->cur_heart_beat_number;
- lEventTotalCycle=cycle_count-(tf->a_block_header->cycle_count & 0xFFFFFFFF);
-
- /* Convert it to nsecs */
- lEventNSec = lEventTotalCycle / tf->cycle_per_nsec;
-
- /* Determine offset in struct ltt_time */
- lTimeOffset.tv_nsec = (long)lEventNSec % 1000000000;
- lTimeOffset.tv_sec = (long)lEventNSec / 1000000000;
+ LttField *field = event_type->root_field;
+ enum field_status fixed_root = FIELD_FIXED, fixed_parent = FIELD_FIXED;
- TimeAdd(time, tf->a_block_header->time, lTimeOffset);
+ if(likely(field))
+ preset_field_type_size(tf, event_type, 0, 0,
+ &fixed_root, &fixed_parent,
+ field);
- return time;
}
+
/*****************************************************************************
*Function name
- * setFieldsOffset : set offset of the fields
+ * preset_field_type_size : set the fixed sizes of the field type
*Input params
- * tracefile : opened trace file
- * evT : the event type
- * evD : event data, it may be NULL
+ * tf : tracefile
+ * event_type : event type
+ * offset_root : offset from the root
+ * offset_parent : offset from the parent
+ * fixed_root : Do we know a fixed offset to the root ?
+ * fixed_parent : Do we know a fixed offset to the parent ?
+ * field : field
****************************************************************************/
-
-void setFieldsOffset(ltt_tracefile * t, ltt_eventtype * evT, void * evD)
+void preset_field_type_size(LttTracefile *tf, LttEventType *event_type,
+ off_t offset_root, off_t offset_parent,
+ enum field_status *fixed_root, enum field_status *fixed_parent,
+ LttField *field)
{
- ltt_field * rootFld = evT->root_field;
- // rootFld->base_address = evD;
+ enum field_status local_fixed_root, local_fixed_parent;
+ guint i;
+ LttType *type;
+
+ g_assert(field->fixed_root == FIELD_UNKNOWN);
+ g_assert(field->fixed_parent == FIELD_UNKNOWN);
+ g_assert(field->fixed_size == FIELD_UNKNOWN);
+
+ type = field->field_type;
+
+ field->fixed_root = *fixed_root;
+ if(field->fixed_root == FIELD_FIXED)
+ field->offset_root = offset_root;
+ else
+ field->offset_root = 0;
+
+ field->fixed_parent = *fixed_parent;
+ if(field->fixed_parent == FIELD_FIXED)
+ field->offset_parent = offset_parent;
+ else
+ field->offset_parent = 0;
+
+ size_t current_root_offset;
+ size_t current_offset;
+ enum field_status current_child_status, final_child_status;
+ size_t max_size;
+
+ switch(type->type_class) {
+ case LTT_INT:
+ case LTT_UINT:
+ case LTT_FLOAT:
+ case LTT_ENUM:
+ field->field_size = ltt_type_size(tf->trace, type);
+ field->fixed_size = FIELD_FIXED;
+ break;
+ case LTT_POINTER:
+ field->field_size = (off_t)event_type->facility->pointer_size;
+ field->fixed_size = FIELD_FIXED;
+ break;
+ case LTT_LONG:
+ case LTT_ULONG:
+ field->field_size = (off_t)event_type->facility->pointer_size;
+ field->fixed_size = FIELD_FIXED;
+ break;
+ case LTT_SIZE_T:
+ case LTT_SSIZE_T:
+ case LTT_OFF_T:
+ field->field_size = (off_t)event_type->facility->size_t_size;
+ field->fixed_size = FIELD_FIXED;
+ break;
+ case LTT_SEQUENCE:
+ local_fixed_root = FIELD_VARIABLE;
+ local_fixed_parent = FIELD_VARIABLE;
+ preset_field_type_size(tf, event_type,
+ 0, 0,
+ &local_fixed_root, &local_fixed_parent,
+ field->child[0]);
+ field->fixed_size = FIELD_VARIABLE;
+ field->field_size = 0;
+ break;
+ case LTT_STRING:
+ field->fixed_size = FIELD_VARIABLE;
+ field->field_size = 0;
+ break;
+ case LTT_ARRAY:
+ local_fixed_root = FIELD_VARIABLE;
+ local_fixed_parent = FIELD_VARIABLE;
+ preset_field_type_size(tf, event_type,
+ 0, 0,
+ &local_fixed_root, &local_fixed_parent,
+ field->child[0]);
+ field->fixed_size = field->child[0]->fixed_size;
+ if(field->fixed_size == FIELD_FIXED)
+ field->field_size = type->element_number * field->child[0]->field_size;
+ else
+ field->field_size = 0;
+ break;
+ case LTT_STRUCT:
+ current_root_offset = field->offset_root;
+ current_offset = 0;
+ current_child_status = FIELD_FIXED;
+ for(i=0;i<type->element_number;i++) {
+ preset_field_type_size(tf, event_type,
+ current_root_offset, current_offset,
+ fixed_root, ¤t_child_status,
+ field->child[i]);
+ if(current_child_status == FIELD_FIXED) {
+ current_root_offset += field->child[i]->field_size;
+ current_offset += field->child[i]->field_size;
+ } else {
+ current_root_offset = 0;
+ current_offset = 0;
+ }
+ }
+ if(current_child_status != FIELD_FIXED) {
+ *fixed_parent = current_child_status;
+ field->field_size = 0;
+ field->fixed_size = current_child_status;
+ } else {
+ field->field_size = current_offset;
+ field->fixed_size = FIELD_FIXED;
+ }
+ break;
+ case LTT_UNION:
+ current_root_offset = field->offset_root;
+ current_offset = 0;
+ max_size = 0;
+ final_child_status = FIELD_FIXED;
+ for(i=0;i<type->element_number;i++) {
+ enum field_status current_root_child_status = FIELD_FIXED;
+ enum field_status current_child_status = FIELD_FIXED;
+ preset_field_type_size(tf, event_type,
+ current_root_offset, current_offset,
+ ¤t_root_child_status, ¤t_child_status,
+ field->child[i]);
+ if(current_child_status != FIELD_FIXED)
+ final_child_status = current_child_status;
+ else
+ max_size = max(max_size, field->child[i]->field_size);
+ }
+ if(final_child_status != FIELD_FIXED) {
+ *fixed_root = final_child_status;
+ *fixed_parent = final_child_status;
+ field->field_size = 0;
+ field->fixed_size = current_child_status;
+ } else {
+ field->field_size = max_size;
+ field->fixed_size = FIELD_FIXED;
+ }
+ break;
+ }
- rootFld->field_size = getFieldtypeSize(t, evT, 0,0,rootFld, evD);
}
+
+/*****************************************************************************
+ *Function name
+ * check_fields_compatibility : Check for compatibility between two fields :
+ * do they use the same inner structure ?
+ *Input params
+ * event_type1 : event type
+ * event_type2 : event type
+ * field1 : field
+ * field2 : field
+ *Returns : 0 if identical
+ * 1 if not.
+ ****************************************************************************/
+gint check_fields_compatibility(LttEventType *event_type1,
+ LttEventType *event_type2,
+ LttField *field1, LttField *field2)
+{
+ guint different = 0;
+ enum field_status local_fixed_root, local_fixed_parent;
+ guint i;
+ LttType *type1;
+ LttType *type2;
+
+ if(field1 == NULL) {
+ if(field2 == NULL) goto end;
+ else {
+ different = 1;
+ goto end;
+ }
+ } else if(field2 == NULL) {
+ different = 1;
+ goto end;
+ }
+
+ g_assert(field1->fixed_root != FIELD_UNKNOWN);
+ g_assert(field2->fixed_root != FIELD_UNKNOWN);
+ g_assert(field1->fixed_parent != FIELD_UNKNOWN);
+ g_assert(field2->fixed_parent != FIELD_UNKNOWN);
+ g_assert(field1->fixed_size != FIELD_UNKNOWN);
+ g_assert(field2->fixed_size != FIELD_UNKNOWN);
+
+ type1 = field1->field_type;
+ type2 = field2->field_type;
+
+ size_t current_root_offset;
+ size_t current_offset;
+ enum field_status current_child_status, final_child_status;
+ size_t max_size;
+
+ if(type1->type_class != type2->type_class) {
+ different = 1;
+ goto end;
+ }
+ if(type1->element_name != type2->element_name) {
+ different = 1;
+ goto end;
+ }
+
+ switch(type1->type_class) {
+ case LTT_INT:
+ case LTT_UINT:
+ case LTT_FLOAT:
+ case LTT_POINTER:
+ case LTT_LONG:
+ case LTT_ULONG:
+ case LTT_SIZE_T:
+ case LTT_SSIZE_T:
+ case LTT_OFF_T:
+ if(field1->field_size != field2->field_size) {
+ different = 1;
+ goto end;
+ }
+ break;
+ case LTT_ENUM:
+ if(type1->element_number != type2->element_number) {
+ different = 1;
+ goto end;
+ }
+ for(i=0;i<type1->element_number;i++) {
+ if(type1->enum_strings[i] != type2->enum_strings[i]) {
+ different = 1;
+ goto end;
+ }
+ }
+ break;
+ case LTT_SEQUENCE:
+ /* Two elements : size and child */
+ g_assert(type1->element_number != type2->element_number);
+ for(i=0;i<type1->element_number;i++) {
+ if(check_fields_compatibility(event_type1, event_type2,
+ field1->child[0], field2->child[0])) {
+ different = 1;
+ goto end;
+ }
+ }
+ break;
+ case LTT_STRING:
+ break;
+ case LTT_ARRAY:
+ if(field1->field_size != field2->field_size) {
+ different = 1;
+ goto end;
+ }
+ /* Two elements : size and child */
+ g_assert(type1->element_number != type2->element_number);
+ for(i=0;i<type1->element_number;i++) {
+ if(check_fields_compatibility(event_type1, event_type2,
+ field1->child[0], field2->child[0])) {
+ different = 1;
+ goto end;
+ }
+ }
+ break;
+ case LTT_STRUCT:
+ case LTT_UNION:
+ if(type1->element_number != type2->element_number) {
+ different = 1;
+ break;
+ }
+ for(i=0;i<type1->element_number;i++) {
+ if(check_fields_compatibility(event_type1, event_type2,
+ field1->child[0], field2->child[0])) {
+ different = 1;
+ goto end;
+ }
+ }
+ break;
+ }
+end:
+ return different;
+}
+
+
+
+
+#if 0
/*****************************************************************************
*Function name
* getFieldtypeSize: get the size of the field type (primitive type)
*Input params
- * tracefile : opened trace file
* evT : event type
* offsetRoot : offset from the root
* offsetParent : offset from the parrent
* int : size of the field
****************************************************************************/
-int getFieldtypeSize(ltt_tracefile * t, ltt_eventtype * evT, int offsetRoot,
- int offsetParent, ltt_field * fld, void * evD)
-{
- int size, size1, element_number, i, offset1, offset2;
- ltt_type * type = fld->field_type;
-
- if(evT->latest_block==t->which_block && evT->latest_event==t->which_event){
- return fld->field_size;
- }
-
- if(fld->field_fixed == 1){
- if(fld == evT->root_field) return fld->field_size;
- }
-
- if(type->type_class != LTT_STRUCT && type->type_class != LTT_ARRAY &&
- type->type_class != LTT_SEQUENCE && type->type_class != LTT_STRING){
- if(fld->field_fixed == -1){
- size = (int) ltt_type_size(t, type);
- fld->field_fixed = 1;
- }else size = fld->field_size;
-
- }else if(type->type_class == LTT_ARRAY){
- element_number = (int) type->element_number;
- if(fld->field_fixed == -1){
- size = getFieldtypeSize(t, evT, offsetRoot,0,fld->child[0], NULL);
- if(size == 0){ //has string or sequence
- fld->field_fixed = 0;
- }else{
- fld->field_fixed = 1;
- size *= element_number;
+static inline gint getFieldtypeSize(LttTracefile *tf,
+ LttEventType * evT, gint offsetRoot,
+ gint offsetParent, LttField * fld, void *evD)
+{
+ gint size, size1, element_number, i, offset1, offset2;
+ LttType * type = fld->field_type;
+
+ /* This likely has been tested with gcov : half of them.. */
+ if(unlikely(fld->field_fixed == 1)){
+ /* tested : none */
+ if(unlikely(fld == evT->root_field)) {
+ size = fld->field_size;
+ goto end_getFieldtypeSize;
+ }
+ }
+
+ /* From gcov profiling : half string, half struct, can we gain something
+ * from that ? (Mathieu) */
+ switch(type->type_class) {
+ case LTT_ARRAY:
+ element_number = (int) type->element_number;
+ if(fld->field_fixed == -1){
+ size = getFieldtypeSize(tf, evT, offsetRoot,
+ 0,fld->child[0], NULL);
+ if(size == 0){ //has string or sequence
+ fld->field_fixed = 0;
+ }else{
+ fld->field_fixed = 1;
+ size *= element_number;
+ }
+ }else if(fld->field_fixed == 0){// has string or sequence
+ size = 0;
+ for(i=0;i<element_number;i++){
+ size += getFieldtypeSize(tf, evT, offsetRoot+size,size,
+ fld->child[0], evD+size);
+ }
+ }else size = fld->field_size;
+ if(unlikely(!evD)){
+ fld->fixed_root = (offsetRoot==-1) ? 0 : 1;
+ fld->fixed_parent = (offsetParent==-1) ? 0 : 1;
}
- }else if(fld->field_fixed == 0){// has string or sequence
- size = 0;
- for(i=0;i<element_number;i++){
- size += getFieldtypeSize(t, evT, offsetRoot+size,size,
- fld->child[0], evD+size);
- }
- }else size = fld->field_size;
-
- }else if(type->type_class == LTT_SEQUENCE){
- size1 = (int) ltt_type_size(t, type);
- if(fld->field_fixed == -1){
- fld->field_fixed = 0;
- size = getFieldtypeSize(t, evT, offsetRoot,0,fld->child[0], NULL);
- fld->element_size = size;
- }else{//0: sequence
- element_number = getIntNumber(size1,evD);
- type->element_number = element_number;
- if(fld->element_size > 0){
- size = element_number * fld->element_size;
- }else{//sequence has string or sequence
- size = 0;
- for(i=0;i<element_number;i++){
- size += getFieldtypeSize(t, evT, offsetRoot+size+size1,size+size1,
- fld->child[0], evD+size+size1);
- }
+
+ break;
+
+ case LTT_SEQUENCE:
+ size1 = (int) ltt_type_size(fac, type);
+ if(fld->field_fixed == -1){
+ fld->sequ_number_size = size1;
+ fld->field_fixed = 0;
+ size = getFieldtypeSize(evT, offsetRoot,
+ 0,fld->child[0], NULL);
+ fld->element_size = size;
+ }else{//0: sequence
+ element_number = getIntNumber(tf,size1,evD);
+ type->element_number = element_number;
+ if(fld->element_size > 0){
+ size = element_number * fld->element_size;
+ }else{//sequence has string or sequence
+ size = 0;
+ for(i=0;i<element_number;i++){
+ size += getFieldtypeSize(tf, evT,
+ offsetRoot+size+size1,size+size1,
+ fld->child[0], evD+size+size1);
+ }
+ }
+ size += size1;
+ }
+ if(unlikely(!evD)){
+ fld->fixed_root = (offsetRoot==-1) ? 0 : 1;
+ fld->fixed_parent = (offsetParent==-1) ? 0 : 1;
}
- size += size1;
- }
- }else if(type->type_class == LTT_STRING){
- size = 0;
- if(fld->field_fixed == -1){
- fld->field_fixed = 0;
- }else{//0: string
- size = sizeof((char*)evD) + 1; //include end : '\0'
- }
+ break;
+
+ case LTT_STRING:
+ size = 0;
+ if(fld->field_fixed == -1){
+ fld->field_fixed = 0;
+ }else{//0: string
+ /* Hope my implementation is faster than strlen (Mathieu) */
+ char *ptr=(char*)evD;
+ size = 1;
+ /* from gcov : many many strings are empty, make it the common case.*/
+ while(unlikely(*ptr != '\0')) { size++; ptr++; }
+ //size = ptr - (char*)evD + 1; //include end : '\0'
+ }
+ fld->fixed_root = (offsetRoot==-1) ? 0 : 1;
+ fld->fixed_parent = (offsetParent==-1) ? 0 : 1;
- }else if(type->type_class == LTT_STRUCT){
- element_number = (int) type->element_number;
- size = 0;
- if(fld->field_fixed == -1){
- offset1 = offsetRoot;
- offset2 = 0;
- for(i=0;i<element_number;i++){
- size1=getFieldtypeSize(t, evT,offset1,offset2, fld->child[i], NULL);
- if(size1 > 0 && size >= 0){
- size += size1;
- if(offset1 >= 0) offset1 += size1;
- offset2 += size1;
- }else{
- size = -1;
- offset1 = -1;
- offset2 = -1;
- }
+ break;
+
+ case LTT_STRUCT:
+ element_number = (int) type->element_number;
+ size = 0;
+ /* tested with gcov */
+ if(unlikely(fld->field_fixed == -1)){
+ offset1 = offsetRoot;
+ offset2 = 0;
+ for(i=0;i<element_number;i++){
+ size1=getFieldtypeSize(tf, evT,offset1,offset2,
+ fld->child[i], NULL);
+ if(likely(size1 > 0 && size >= 0)){
+ size += size1;
+ if(likely(offset1 >= 0)) offset1 += size1;
+ offset2 += size1;
+ }else{
+ size = -1;
+ offset1 = -1;
+ offset2 = -1;
+ }
+ }
+ if(unlikely(size == -1)){
+ fld->field_fixed = 0;
+ size = 0;
+ }else fld->field_fixed = 1;
+ }else if(likely(fld->field_fixed == 0)){
+ offset1 = offsetRoot;
+ offset2 = 0;
+ for(i=0;unlikely(i<element_number);i++){
+ size=getFieldtypeSize(tf, evT, offset1, offset2,
+ fld->child[i], evD+offset2);
+ offset1 += size;
+ offset2 += size;
+ }
+ size = offset2;
+ }else size = fld->field_size;
+ fld->fixed_root = (offsetRoot==-1) ? 0 : 1;
+ fld->fixed_parent = (offsetParent==-1) ? 0 : 1;
+ break;
+
+ default:
+ if(unlikely(fld->field_fixed == -1)){
+ size = (int) ltt_type_size(LTT_GET_BO(tf), type);
+ fld->field_fixed = 1;
+ }else size = fld->field_size;
+ if(unlikely(!evD)){
+ fld->fixed_root = (offsetRoot==-1) ? 0 : 1;
+ fld->fixed_parent = (offsetParent==-1) ? 0 : 1;
}
- if(size == -1){
- fld->field_fixed = 0;
- size = 0;
- }else fld->field_fixed = 1;
- }else if(fld->field_fixed == 0){
- offset1 = offsetRoot;
- offset2 = 0;
- for(i=0;i<element_number;i++){
- size=getFieldtypeSize(t,evT,offset1,offset2,fld->child[i],evD+offset2);
- offset1 += size;
- offset2 += size;
- }
- size = offset2;
- }else size = fld->field_size;
+ break;
}
fld->offset_root = offsetRoot;
fld->offset_parent = offsetParent;
- if(!evD){
- fld->fixed_root = (offsetRoot==-1) ? 0 : 1;
- fld->fixed_parent = (offsetParent==-1) ? 0 : 1;
- }
fld->field_size = size;
+end_getFieldtypeSize:
+
return size;
}
+#endif //0
/*****************************************************************************
*Function name
- * timecmp : compare two time
+ * ltt_get_int : get an integer number
*Input params
- * t1 : first time
- * t2 : second time
+ * reverse_byte_order: must we reverse the byte order ?
+ * size : the size of the integer
+ * ptr : the data pointer
*Return value
- * int : 0: t1 == t2; -1: t1 < t2; 1: t1 > t2
+ * gint64 : a 64 bits integer
****************************************************************************/
-int timecmp(ltt_time * t1, ltt_time * t2)
+gint64 ltt_get_int(gboolean reverse_byte_order, gint size, void *data)
{
- ltt_time T;
- TimeSub(T, *t1, *t2);
- if(T.tv_sec == 0 && T.tv_nsec == 0) return 0;
- else if(T.tv_sec > 0 || (T.tv_sec==0 && T.tv_nsec > 0)) return 1;
- else return -1;
+ gint64 val;
+
+ switch(size) {
+ case 1: val = *((gint8*)data); break;
+ case 2: val = ltt_get_int16(reverse_byte_order, data); break;
+ case 4: val = ltt_get_int32(reverse_byte_order, data); break;
+ case 8: val = ltt_get_int64(reverse_byte_order, data); break;
+ default: val = ltt_get_int64(reverse_byte_order, data);
+ g_critical("get_int : integer size %d unknown", size);
+ break;
+ }
+
+ return val;
}
/*****************************************************************************
*Function name
- * getIntNumber : get an integer number
+ * ltt_get_uint : get an unsigned integer number
*Input params
+ * reverse_byte_order: must we reverse the byte order ?
* size : the size of the integer
- * evD : the event data
+ * ptr : the data pointer
*Return value
- * int : an integer
+ * guint64 : a 64 bits unsigned integer
****************************************************************************/
-int getIntNumber(int size, void *evD)
+guint64 ltt_get_uint(gboolean reverse_byte_order, gint size, void *data)
{
- int64_t i;
- if(size == 1) i = *(int8_t *)evD;
- else if(size == 2) i = *(int16_t *)evD;
- else if(size == 4) i = *(int32_t *)evD;
- else if(size == 8) i = *(int64_t *)evD;
-
- return (int) i;
+ guint64 val;
+
+ switch(size) {
+ case 1: val = *((gint8*)data); break;
+ case 2: val = ltt_get_uint16(reverse_byte_order, data); break;
+ case 4: val = ltt_get_uint32(reverse_byte_order, data); break;
+ case 8: val = ltt_get_uint64(reverse_byte_order, data); break;
+ default: val = ltt_get_uint64(reverse_byte_order, data);
+ g_critical("get_uint : unsigned integer size %d unknown",
+ size);
+ break;
+ }
+
+ return val;
}
-/*****************************************************************************
- *Function name
- * getDataEndianType : get the data type size and endian type of the local
- * machine
- *Input params
- * size : size of data type
- * endian : endian type, little or big
- ****************************************************************************/
-void getDataEndianType(ltt_arch_size * size, ltt_arch_endian * endian)
+/* get the node name of the system */
+
+char * ltt_trace_system_description_node_name (LttSystemDescription * s)
{
- int i = 1;
- char c = (char) i;
- int sizeInt=sizeof(int), sizeLong=sizeof(long), sizePointer=sizeof(void *);
+ return s->node_name;
+}
+
+
+/* get the domain name of the system */
+
+char * ltt_trace_system_description_domain_name (LttSystemDescription * s)
+{
+ return s->domain_name;
+}
+
+
+/* get the description of the system */
+
+char * ltt_trace_system_description_description (LttSystemDescription * s)
+{
+ return s->description;
+}
+
+
+/* get the start time of the trace */
+
+LttTime ltt_trace_system_description_trace_start_time(LttSystemDescription *s)
+{
+ return s->trace_start;
+}
+
+
+LttTracefile *ltt_tracefile_new()
+{
+ return g_new(LttTracefile, 1);
+}
+
+void ltt_tracefile_destroy(LttTracefile *tf)
+{
+ g_free(tf);
+}
- if(c == 1) *endian = LTT_LITTLE_ENDIAN;
- else *endian = LTT_BIG_ENDIAN;
+void ltt_tracefile_copy(LttTracefile *dest, const LttTracefile *src)
+{
+ *dest = *src;
+}
- if(sizeInt == 2 && sizeLong == 4 && sizePointer == 4)
- *size = LTT_LP32;
- else if(sizeInt == 4 && sizeLong == 4 && sizePointer == 4)
- *size = LTT_ILP32;
- else if(sizeInt == 4 && sizeLong == 8 && sizePointer == 8)
- *size = LTT_LP64;
- else if(sizeInt == 8 && sizeLong == 8 && sizePointer == 8)
- *size = LTT_ILP64;
- else *size = LTT_UNKNOWN;
+/* Before library loading... */
+
+static void __attribute__((constructor)) init(void)
+{
+ LTT_FACILITY_NAME_HEARTBEAT = g_quark_from_string("heartbeat");
+ LTT_EVENT_NAME_HEARTBEAT = g_quark_from_string("heartbeat");
+
+ LTT_TRACEFILE_NAME_FACILITIES = g_quark_from_string("/control/facilities");
}