diff options
Diffstat (limited to 'trace')
| -rw-r--r-- | trace/simple.c | 33 |
1 files changed, 31 insertions, 2 deletions
diff --git a/trace/simple.c b/trace/simple.c index 2ec32e159c..b263622fa9 100644 --- a/trace/simple.c +++ b/trace/simple.c @@ -24,7 +24,7 @@ #define HEADER_MAGIC 0xf2b177cb0aa429b4ULL /** Trace file version number, bump if format changes */ -#define HEADER_VERSION 3 +#define HEADER_VERSION 4 /** Records were dropped event ID */ #define DROPPED_EVENT_ID (~(uint64_t)0 - 1) @@ -56,6 +56,9 @@ static uint32_t trace_pid; static FILE *trace_fp; static char *trace_file_name; +#define TRACE_RECORD_TYPE_MAPPING 0 +#define TRACE_RECORD_TYPE_EVENT 1 + /* * Trace buffer entry */ typedef struct { uint64_t event; /* event ID value */ @@ -160,6 +163,7 @@ static gpointer writeout_thread(gpointer opaque) unsigned int idx = 0; int dropped_count; size_t unused __attribute__ ((unused)); + uint64_t type = TRACE_RECORD_TYPE_EVENT; for (;;) { wait_for_trace_records_available(); @@ -174,10 +178,12 @@ static gpointer writeout_thread(gpointer opaque) } while (!g_atomic_int_compare_and_exchange(&dropped_events, dropped_count, 0)); dropped.rec.arguments[0] = dropped_count; + unused = fwrite(&type, sizeof(type), 1, trace_fp); unused = fwrite(&dropped.rec, dropped.rec.length, 1, trace_fp); } while (get_trace_record(idx, &recordptr)) { + unused = fwrite(&type, sizeof(type), 1, trace_fp); unused = fwrite(recordptr, recordptr->length, 1, trace_fp); writeout_idx += recordptr->length; free(recordptr); /* don't use g_free, can deadlock when traced */ @@ -273,6 +279,28 @@ void trace_record_finish(TraceBufferRecord *rec) } } +static int st_write_event_mapping(void) +{ + uint64_t type = TRACE_RECORD_TYPE_MAPPING; + TraceEventIter iter; + TraceEvent *ev; + + trace_event_iter_init(&iter, NULL); + while ((ev = trace_event_iter_next(&iter)) != NULL) { + uint64_t id = trace_event_get_id(ev); + const char *name = trace_event_get_name(ev); + uint32_t len = strlen(name); + if (fwrite(&type, sizeof(type), 1, trace_fp) != 1 || + fwrite(&id, sizeof(id), 1, trace_fp) != 1 || + fwrite(&len, sizeof(len), 1, trace_fp) != 1 || + fwrite(name, len, 1, trace_fp) != 1) { + return -1; + } + } + + return 0; +} + void st_set_trace_file_enabled(bool enable) { if (enable == !!trace_fp) { @@ -297,7 +325,8 @@ void st_set_trace_file_enabled(bool enable) return; } - if (fwrite(&header, sizeof header, 1, trace_fp) != 1) { + if (fwrite(&header, sizeof header, 1, trace_fp) != 1 || + st_write_event_mapping() < 0) { fclose(trace_fp); trace_fp = NULL; return; |