* to know the structure's alignment.
*/
+#define _GNU_SOURCE
+#include <limits.h>
+#include <stdlib.h>
#include <errno.h>
#include <sys/types.h>
#include <sys/stat.h>
#include <stdio.h>
#include <string.h>
#include <unistd.h>
-#include <stdlib.h>
+#include <assert.h>
#include "genevent.h"
#include "parser.h"
#define TRUE 1
#define FALSE (!TRUE)
+/* Debugging printf */
+#ifdef DEBUG
+#define dprintf(...) \
+ do {\
+ printf(__FILE__ ",%u,%s: ",\
+ __LINE__, __func__);\
+ printf(__VA_ARGS__);\
+ } while(0)
+#else
+#define dprintf(...)
+#endif
+
+
/* Code printing */
+void print_tabs(unsigned int tabs, FILE *fd)
+{
+ for(unsigned int i = 0; i<tabs;i++)
+ fprintf(fd, "\t");
+}
+
/* Type size checking */
+/* Uses #error in the generated code to signal error and stop the compiler */
int print_check(int fd);
int print_events(int fd);
+/* print type.
+ *
+ * Copied from construct_types_and_fields in LTTV facility.c */
+
+int print_type(type_descriptor_t * td, FILE *fd, unsigned int tabs,
+ char *nest_name, char *field_name)
+{
+ char basename[PATH_MAX];
+ unsigned int basename_len = 0;
+
+ strcpy(basename, nest_name);
+ basename_len = strlen(basename);
+
+ /* For a named type, we use the type_name directly */
+ if(td->type_name != NULL) {
+ strncpy(basename, td->type_name, PATH_MAX);
+ basename_len = strlen(basename);
+ } else {
+ /* For a unnamed type, there must be a field name */
+ if(basename_len != 0) {
+ strncat(basename, "_", PATH_MAX - basename_len);
+ basename_len = strlen(basename);
+ }
+ strncat(basename, field_name, PATH_MAX - basename_len);
+ }
+
+ switch(td->type) {
+ case INT_FIXED:
+ fprintf(fd, "%s", intOutputTypes[getSizeindex(td->size)]);
+ break;
+ case UINT_FIXED:
+ fprintf(fd, "%s", uintOutputTypes[getSizeindex(td->size)]);
+ break;
+ case CHAR:
+ fprintf(fd, "signed char");
+ break;
+ case UCHAR:
+ fprintf(fd, "unsigned char");
+ break;
+ case SHORT:
+ fprintf(fd, "short");
+ break;
+ case USHORT:
+ fprintf(fd, "unsigned short");
+ break;
+ case INT:
+ fprintf(fd, "int");
+ break;
+ case UINT:
+ fprintf(fd, "unsigned int");
+ break;
+ case FLOAT:
+ fprintf(fd, "%s", floatOutputTypes[getSizeindex(td->size)]);
+ break;
+ case POINTER:
+ fprintf(fd, "void *");
+ break;
+ case LONG:
+ fprintf(fd, "long");
+ break;
+ case ULONG:
+ fprintf(fd, "unsigned long");
+ break;
+ case SIZE_T:
+ fprintf(fd, "size_t");
+ break;
+ case SSIZE_T:
+ fprintf(fd, "ssize_t");
+ break;
+ case OFF_T:
+ fprintf(fd, "off_t");
+ break;
+ case STRING:
+ fprintf(fd, "char *");
+ break;
+ case ENUM:
+ fprintf(fd, "enum lttng_%s", basename);
+ break;
+ case ARRAY:
+ fprintf(fd, "lttng_array_%s", basename);
+ break;
+ case SEQUENCE:
+ fprintf(fd, "lttng_sequence_%s", basename);
+ break;
+ case STRUCT:
+ fprintf(fd, "struct lttng_%s", basename);
+ break;
+ case UNION:
+ fprintf(fd, "union lttng_%s", basename);
+ break;
+ default:
+ printf("print_type : unknown type\n");
+ return 1;
+ }
+
+ return 0;
+}
+
+/* print type declaration.
+ *
+ * Copied from construct_types_and_fields in LTTV facility.c */
+
+int print_type_declaration(type_descriptor_t * td, FILE *fd, unsigned int tabs,
+ char *nest_name, char *field_name)
+{
+ char basename[PATH_MAX];
+ unsigned int basename_len = 0;
+
+ strcpy(basename, nest_name);
+ basename_len = strlen(basename);
+
+ /* For a named type, we use the type_name directly */
+ if(td->type_name != NULL) {
+ strncpy(basename, td->type_name, PATH_MAX);
+ basename_len = strlen(basename);
+ } else {
+ /* For a unnamed type, there must be a field name */
+ if(basename_len != 0) {
+ strncat(basename, "_", PATH_MAX - basename_len);
+ basename_len = strlen(basename);
+ }
+ strncat(basename, field_name, PATH_MAX - basename_len);
+ dprintf("%s\n", field_name);
+ }
+
+ switch(td->type) {
+ case ENUM:
+ fprintf(fd, "enum lttng_%s", basename);
+ fprintf(fd, " {\n");
+ for(unsigned int i=0;i<td->labels.position;i++){
+ print_tabs(1, fd);
+ fprintf(fd, "LTTNG_%s", ((char*)(td->labels.array[i])));
+ fprintf(fd, ",\n");
+ }
+ fprintf(fd, "};\n");
+ fprintf(fd, "\n");
+ break;
+
+ case ARRAY:
+ assert(td->size >= 0);
+ if(td->nested_type->type_name == NULL) {
+ /* Not a named nested type : we must print its declaration first */
+ if(print_type_declaration(td->nested_type,
+ fd, 0, basename, "")) return 1;
+ }
+ fprintf(fd, "#define LTTNG_ARRAY_SIZE_%s %llu\n", basename,
+ td->size);
+ if(print_type(td->nested_type, fd, tabs, basename, "")) return 1;
+ fprintf(fd, " lttng_array_%s[LTTNG_ARRAY_SIZE_%s];\n", basename,
+ basename);
+ fprintf(fd, "\n");
+ break;
+ case SEQUENCE:
+ if(td->nested_type->type_name == NULL) {
+ /* Not a named nested type : we must print its declaration first */
+ if(print_type_declaration(td->nested_type,
+ fd, 0, basename, "")) return 1;
+ }
+ fprintf(fd, "typedef struct lttng_sequence_%s lttng_sequence_%s;\n",
+ basename,
+ basename);
+ fprintf(fd, "struct lttng_sequence_%s", basename);
+ fprintf(fd, " {\n");
+ print_tabs(1, fd);
+ fprintf(fd, "unsigned int len;\n");
+ print_tabs(1, fd);
+ if(print_type(td->nested_type, fd, tabs, basename, "")) return 1;
+ fprintf(fd, " *array;\n");
+ fprintf(fd, "};\n");
+ fprintf(fd, "\n");
+ break;
+
+ case STRUCT:
+ for(unsigned int i=0;i<td->fields.position;i++){
+ field_t *field = (field_t*)(td->fields.array[i]);
+ type_descriptor_t *type = field->type;
+ if(type->type_name == NULL) {
+ /* Not a named nested type : we must print its declaration first */
+ if(print_type_declaration(type,
+ fd, 0, basename, field->name)) return 1;
+ }
+ }
+ fprintf(fd, "struct lttng_%s", basename);
+ fprintf(fd, " {\n");
+ for(unsigned int i=0;i<td->fields.position;i++){
+ field_t *field = (field_t*)(td->fields.array[i]);
+ type_descriptor_t *type = field->type;
+ print_tabs(1, fd);
+ if(print_type(type, fd, tabs, basename, field->name)) return 1;
+ fprintf(fd, " ");
+ fprintf(fd, "%s", field->name);
+ fprintf(fd, ";\n");
+ }
+ fprintf(fd, "};\n");
+ fprintf(fd, "\n");
+ break;
+ case UNION:
+ /* TODO : Do not allow variable length fields in a union */
+ for(unsigned int i=0;i<td->fields.position;i++){
+ field_t *field = (field_t*)(td->fields.array[i]);
+ type_descriptor_t *type = field->type;
+ if(type->type_name == NULL) {
+ /* Not a named nested type : we must print its declaration first */
+ if(print_type_declaration(type,
+ fd, 0, basename, field->name)) return 1;
+ }
+ }
+ fprintf(fd, "union lttng_%s", basename);
+ fprintf(fd, " {\n");
+ for(unsigned i=0;i<td->fields.position;i++){
+ field_t *field = (field_t*)(td->fields.array[i]);
+ type_descriptor_t *type = field->type;
+ print_tabs(1, fd);
+ if(print_type(type, fd, tabs, basename, field->name)) return 1;
+ fprintf(fd, " ");
+ fprintf(fd, "%s", field->name);
+ fprintf(fd, ";\n");
+ }
+ fprintf(fd, "};\n");
+ fprintf(fd, "\n");
+ break;
+ default:
+ dprintf("print_type_declaration : unknown type or nothing to declare.\n");
+ break;
+ }
+
+ return 0;
+}
+
+/* Print the logging function of an event. This is the core of genevent */
+int print_event_logging_function(char *basename, event_t *event, FILE *fd)
+{
+ fprintf(fd, "static inline void trace_%s(\n", basename);
+ for(unsigned int j = 0; j < event->fields.position; j++) {
+ /* For each field, print the function argument */
+ field_t *f = (field_t*)event->fields.array[j];
+ type_descriptor_t *t = f->type;
+ print_tabs(2, fd);
+ if(print_type(t, fd, 0, basename, f->name)) return 1;
+ fprintf(fd, " %s", f->name);
+ if(j < event->fields.position-1) {
+ fprintf(fd, ",");
+ fprintf(fd, "\n");
+ }
+ }
+ if(event->fields.position == 0) {
+ print_tabs(2, fd);
+ fprintf(fd, "void");
+ }
+ fprintf(fd,")\n");
+ fprintf(fd, "#ifndef CONFIG_LTT\n");
+ fprintf(fd, "{\n");
+ fprintf(fd, "}\n");
+ fprintf(fd,"#else\n");
+ fprintf(fd, "{\n");
+
+
+ fprintf(fd, "}\n");
+ fprintf(fd, "#endif //CONFIG_LTT\n\n");
+ return 0;
+}
+
+
+/* ltt-facility-name.h : main logging header.
+ * log_header */
+
+void print_log_header_head(facility_t *fac, FILE *fd)
+{
+ fprintf(fd, "#ifndef _LTT_FACILITY_%s_H_\n", fac->capname);
+ fprintf(fd, "#define _LTT_FACILITY_%s_H_\n\n", fac->capname);
+ fprintf(fd, "\n");
+ fprintf(fd, "/* Facility activation at compile time. */\n");
+ fprintf(fd, "#ifdef CONFIG_LTT_FACILITY_%s\n\n", fac->capname);
+}
+
+
+
+int print_log_header_types(facility_t *fac, FILE *fd)
+{
+ sequence_t *types = &fac->named_types.values;
+ fprintf(fd, "/* Named types */\n");
+ fprintf(fd, "\n");
+
+ for(unsigned int i = 0; i < types->position; i++) {
+ /* For each named type, print the definition */
+ if((print_type_declaration(types->array[i], fd,
+ 0, "", ""))) return 1;
+ }
+ return 0;
+}
+
+int print_log_header_events(facility_t *fac, FILE *fd)
+{
+ sequence_t *events = &fac->events;
+ char basename[PATH_MAX];
+ unsigned int facname_len;
+
+ strncpy(basename, fac->name, PATH_MAX);
+ facname_len = strlen(basename);
+ strncat(basename, "_", PATH_MAX-facname_len);
+ facname_len = strlen(basename);
+
+ for(unsigned int i = 0; i < events->position; i++) {
+ event_t *event = (event_t*)events->array[i];
+ strncpy(&basename[facname_len], event->name, PATH_MAX-facname_len);
+
+ /* For each event, print structure, and then logging function */
+ fprintf(fd, "/* Event %s structures */\n",
+ event->name);
+ for(unsigned int j = 0; j < event->fields.position; j++) {
+ /* For each unnamed type, print the definition */
+ field_t *f = (field_t*)event->fields.array[j];
+ type_descriptor_t *t = f->type;
+ if(t->type_name == NULL)
+ if((print_type_declaration(t, fd, 0, basename, f->name))) return 1;
+ }
+ fprintf(fd, "\n");
+
+ fprintf(fd, "/* Event %s logging function */\n",
+ event->name);
+
+ if(print_event_logging_function(basename, event, fd)) return 1;
+
+ fprintf(fd, "\n");
+ }
+
+ return 0;
+}
+
+
+void print_log_header_tail(facility_t *fac, FILE *fd)
+{
+ fprintf(fd, "#endif //CONFIG_LTT_FACILITY_%s\n\n", fac->capname);
+ fprintf(fd, "#endif //_LTT_FACILITY_%s_H_\n",fac->capname);
+}
+
+int print_log_header(facility_t *fac)
+{
+ char filename[PATH_MAX];
+ unsigned int filename_size = 0;
+ FILE *fd;
+ dprintf("%s\n", fac->name);
+
+ strcpy(filename, "ltt-facility-");
+ filename_size = strlen(filename);
+
+ strncat(filename, fac->name, PATH_MAX - filename_size);
+ filename_size = strlen(filename);
+
+ strncat(filename, ".h", PATH_MAX - filename_size);
+ filename_size = strlen(filename);
+
+
+ fd = fopen(filename, "w");
+ if(fd == NULL) {
+ printf("Error opening file %s for writing : %s\n",
+ filename, strerror(errno));
+ return errno;
+ }
+
+ /* Print file head */
+ print_log_header_head(fac, fd);
+
+ /* print named types in declaration order */
+ if(print_log_header_types(fac, fd)) return 1;
+
+ /* Print events */
+ if(print_log_header_events(fac, fd)) return 1;
+
+ /* Print file tail */
+ print_log_header_tail(fac, fd);
+
+
+ fclose(fd);
+
+ return 0;
+}
+
+
+/* ltt-facility-id-name.h : facility id.
+ * log_id_header */
+int print_id_header(facility_t *fac)
+{
+ char filename[PATH_MAX];
+ unsigned int filename_size = 0;
+ FILE *fd;
+ dprintf("%s\n", fac->name);
+
+ strcpy(filename, "ltt-facility-id-");
+ filename_size = strlen(filename);
+
+ strncat(filename, fac->name, PATH_MAX - filename_size);
+ filename_size = strlen(filename);
+
+ strncat(filename, ".h", PATH_MAX - filename_size);
+ filename_size = strlen(filename);
+
+
+ fd = fopen(filename, "w");
+ if(fd == NULL) {
+ printf("Error opening file %s for writing : %s\n",
+ filename, strerror(errno));
+ return errno;
+ }
+
+ fclose(fd);
+
+ return 0;
+}
+
+
+/* ltt-facility-loader-name.h : facility specific loader info.
+ * loader_header */
+int print_loader_header(facility_t *fac)
+{
+ char filename[PATH_MAX];
+ unsigned int filename_size = 0;
+ FILE *fd;
+ dprintf("%s\n", fac->name);
+
+ strcpy(filename, "ltt-facility-loader-");
+ filename_size = strlen(filename);
+
+ strncat(filename, fac->name, PATH_MAX - filename_size);
+ filename_size = strlen(filename);
+
+ strncat(filename, ".h", PATH_MAX - filename_size);
+ filename_size = strlen(filename);
+
+
+ fd = fopen(filename, "w");
+ if(fd == NULL) {
+ printf("Error opening file %s for writing : %s\n",
+ filename, strerror(errno));
+ return errno;
+ }
+
+ fclose(fd);
+
+ return 0;
+}
+
+/* ltt-facility-loader-name.c : generic faciilty loader
+ * loader_c */
+int print_loader_c(facility_t *fac)
+{
+ char filename[PATH_MAX];
+ unsigned int filename_size = 0;
+ FILE *fd;
+ dprintf("%s\n", fac->name);
+
+ strcpy(filename, "ltt-facility-loader-");
+ filename_size = strlen(filename);
+
+ strncat(filename, fac->name, PATH_MAX - filename_size);
+ filename_size = strlen(filename);
+
+ strncat(filename, ".c", PATH_MAX - filename_size);
+ filename_size = strlen(filename);
+
+
+ fd = fopen(filename, "w");
+ if(fd == NULL) {
+ printf("Error opening file %s for writing : %s\n",
+ filename, strerror(errno));
+ return errno;
+ }
+
+
+ fclose(fd);
+
+ return 0;
+}
+
+
+
/* open facility */
/* code taken from ltt_facility_open in ltt/facility.c in lttv */
/* generate the output C files */
- /* ltt-facility-name.h : main logging header */
-
+ /* ltt-facility-name.h : main logging header.
+ * log_header */
+ err = print_log_header(fac);
+ if(err) return err;
- /* ltt-facility-id-name.h : facility id. */
+ /* ltt-facility-id-name.h : facility id.
+ * log_id_header */
+ err = print_id_header(fac);
+ if(err) return err;
-
- /* ltt-facility-loader-name.h : facility specific loader info. */
-
- /* ltt-facility-loader-name.c : generic faciilty loader */
-
-
+ /* ltt-facility-loader-name.h : facility specific loader info.
+ * loader_header */
+ err = print_loader_header(fac);
+ if(err) return err;
+
+ /* ltt-facility-loader-name.c : generic faciilty loader
+ * loader_c */
+ err = print_loader_c(fac);
+ if(err) return err;
/* close the facility */
ltt_facility_close(fac);
projects / lttv.git / blobdiff