}
+guint ltt_trace_get_num_cpu(LttTrace *t)
+{
+ return t->num_cpu;
+}
+
+
+/* trace can be NULL
+ *
+ * Return value : 0 success, 1 bad tracefile
+ */
+int parse_trace_header(void *header, LttTracefile *tf, LttTrace *t)
+{
+ guint32 *magic_number = (guint32*)header;
+ struct ltt_trace_header_any *any = (struct ltt_trace_header_any *)header;
+
+ if(*magic_number == LTT_MAGIC_NUMBER)
+ tf->reverse_bo = 0;
+ else if(*magic_number == LTT_REV_MAGIC_NUMBER)
+ tf->reverse_bo = 1;
+ else /* invalid magic number, bad tracefile ! */
+ return 1;
+
+ /* Get float byte order : might be different from int byte order
+ * (or is set to 0 if the trace has no float (kernel trace)) */
+ tf->float_word_order = any->float_word_order;
+
+ if(t) {
+ t->arch_type = ltt_get_uint32(LTT_GET_BO(tf),
+ &any->arch_type);
+ t->arch_variant = ltt_get_uint32(LTT_GET_BO(tf),
+ &any->arch_variant);
+ t->arch_size = any->arch_size;
+ t->ltt_major_version = any->major_version;
+ t->ltt_minor_version = any->minor_version;
+ t->flight_recorder = any->flight_recorder;
+ t->has_heartbeat = any->has_heartbeat;
+ t->has_alignment = any->has_alignment;
+ t->has_tsc = any->has_tsc;
+ }
+
+
+ switch(any->major_version) {
+
+ case 0:
+ switch(any->minor_version) {
+ case 3:
+ {
+ tf->buffer_header_size =
+ sizeof(struct ltt_block_start_header)
+ + sizeof(struct ltt_trace_header_0_3);
+ }
+ break;
+ default:
+ g_warning("Unsupported trace version : %hhu.%hhu",
+ any->major_version, any->minor_version);
+ return 1;
+ }
+ break;
+
+ default:
+ g_warning("Unsupported trace version : %hhu.%hhu",
+ any->major_version, any->minor_version);
+ return 1;
+ }
+
+
+ return 0;
+}
+
+
/*****************************************************************************
*Function name
}
// Is the file large enough to contain a trace
- if(lTDFStat.st_size < (off_t)(sizeof(struct ltt_block_start_header))){
+ if(lTDFStat.st_size <
+ (off_t)(sizeof(struct ltt_block_start_header)
+ + sizeof(struct ltt_trace_header_any))){
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,
+ PAGE_ALIGN(sizeof(struct ltt_block_start_header)
+ + sizeof(struct ltt_trace_header_any)), PROT_READ,
MAP_PRIVATE, tf->fd, 0);
if(tf->buffer.head == MAP_FAILED) {
perror("Error in allocating memory for buffer of tracefile");
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 ! */
+ if(parse_trace_header(header->trace, tf, NULL)) {
+ g_warning("parse_trace_header error");
goto unmap_file;
+ }
//store the size of the file
tf->file_size = lTDFStat.st_size;
tf->num_blocks = tf->file_size / tf->buf_size;
if(munmap(tf->buffer.head,
- PAGE_ALIGN(sizeof(struct ltt_block_start_header)))) {
+ PAGE_ALIGN(sizeof(struct ltt_block_start_header)
+ + sizeof(struct ltt_trace_header_any)))) {
g_warning("unmap size : %u\n",
- PAGE_ALIGN(sizeof(struct ltt_block_start_header)));
+ PAGE_ALIGN(sizeof(struct ltt_block_start_header)
+ + sizeof(struct ltt_trace_header_any)));
perror("munmap error");
g_assert(0);
}
/* Error */
unmap_file:
if(munmap(tf->buffer.head,
- PAGE_ALIGN(sizeof(struct ltt_block_start_header)))) {
+ PAGE_ALIGN(sizeof(struct ltt_block_start_header)
+ + sizeof(struct ltt_trace_header_any)))) {
g_warning("unmap size : %u\n",
- PAGE_ALIGN(sizeof(struct ltt_block_start_header)));
+ PAGE_ALIGN(sizeof(struct ltt_block_start_header)
+ + sizeof(struct ltt_trace_header_any)));
perror("munmap error");
g_assert(0);
}
g_debug("Tracefile file or directory : %s\n", path);
+ if(strcmp(rel_path, "/eventdefs") == 0) continue;
+
if(S_ISDIR(stat_buf.st_mode)) {
g_debug("Entering subdirectory...\n");
LttTrace * t;
LttTracefile *tf;
GArray *group;
- int i;
+ int i, ret;
struct ltt_block_start_header *header;
+ DIR *dir;
+ struct dirent *entry;
+ guint control_found = 0;
+ guint eventdefs_found = 0;
+ struct stat stat_buf;
+ gchar path[PATH_MAX];
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);
+
+ /* Test to see if it looks like a trace */
+ dir = opendir(abs_path);
+ if(dir == NULL) {
+ perror(abs_path);
+ goto open_error;
+ }
+ while((entry = readdir(dir)) != NULL) {
+ strcpy(path, abs_path);
+ strcat(path, "/");
+ strcat(path, entry->d_name);
+ ret = stat(path, &stat_buf);
+ if(ret == -1) {
+ perror(path);
+ continue;
+ }
+ if(S_ISDIR(stat_buf.st_mode)) {
+ if(strcmp(entry->d_name, "control") == 0) {
+ control_found = 1;
+ }
+ if(strcmp(entry->d_name, "eventdefs") == 0) {
+ eventdefs_found = 1;
+ }
+ }
+ }
+ closedir(dir);
+
+ if(!control_found || !eventdefs_found) goto find_error;
+
+ /* Open all the tracefiles */
if(open_tracefiles(t, abs_path, "")) {
g_warning("Error opening tracefile %s", abs_path);
- goto open_error;
+ goto find_error;
}
/* Prepare the facilities containers : array and mapping */
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;
-
+ g_assert(parse_trace_header(header->trace,
+ tf, t) == 0);
+
+ t->num_cpu = group->len;
for(i=0; i<group->len; i++) {
tf = &g_array_index (group, LttTracefile, i);
facilities_error:
g_datalist_clear(&t->facilities_by_name);
g_array_free(t->facilities_by_num, TRUE);
-open_error:
+find_error:
g_datalist_clear(&t->tracefiles);
+open_error:
g_free(t);
alloc_error:
return NULL;
} else if(ltt_time_compare(time, tf->buffer.begin.timestamp) < 0) {
/* go to lower part */
- high = block_num;
+ high = block_num - 1;
} else if(ltt_time_compare(time, tf->buffer.end.timestamp) > 0) {
/* go to higher part */
- low = block_num;
+ low = block_num + 1;
} else {/* The event is right in the buffer!
(or in the next buffer first event) */
while(1) {
/* 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);
+ tf->event.offset += tf->buffer_header_size;
if(tf->event.offset == tf->buf_size - tf->buffer.lost_size) {
ret = ERANGE;
ret = ERANGE;
goto found;
}
+ g_assert(tf->event.offset < tf->buf_size - tf->buffer.lost_size);
found:
return ret;
projects / lttv.git / blobdiff