diff options
Diffstat (limited to 'fitz')
-rw-r--r-- | fitz/base_memory.c | 57 |
1 files changed, 57 insertions, 0 deletions
diff --git a/fitz/base_memory.c b/fitz/base_memory.c index cfab858d..7a38c401 100644 --- a/fitz/base_memory.c +++ b/fitz/base_memory.c @@ -1,5 +1,11 @@ #include "fitz-internal.h" +/* Enable FITZ_DEBUG_LOCKING_TIMES below if you want to check the times + * for which locks are held too. */ +#ifdef FITZ_DEBUG_LOCKING +#undef FITZ_DEBUG_LOCKING_TIMES +#endif + static void * do_scavenging_malloc(fz_context *ctx, unsigned int size) { @@ -253,6 +259,43 @@ enum fz_context *fz_lock_debug_contexts[FZ_LOCK_DEBUG_CONTEXT_MAX]; int fz_locks_debug[FZ_LOCK_DEBUG_CONTEXT_MAX][FZ_LOCK_MAX]; +#ifdef FITZ_DEBUG_LOCKING_TIMES +int fz_debug_locking_inited = 0; +int fz_lock_program_start; +int fz_lock_time[FZ_LOCK_DEBUG_CONTEXT_MAX][FZ_LOCK_MAX] = { { 0 } }; +int fz_lock_taken[FZ_LOCK_DEBUG_CONTEXT_MAX][FZ_LOCK_MAX] = { { 0 } }; + +/* We implement our own millisecond clock, as clock() cannot be trusted + * when threads are involved. */ +static int ms_clock(void) +{ +#ifdef _WIN32 + return (int)GetTickCount(); +#else + struct timeval tp; + gettimeofday(&tp, NULL); + return (tp.tv_sec*1000) + (tp.tv_usec/1000); +#endif +} + +static void dump_lock_times(void) +{ + int i, j; + int prog_time = ms_clock() - fz_lock_program_start; + + for (j = 0; j < FZ_LOCK_MAX; j++) + { + int total = 0; + for (i = 0; i < FZ_LOCK_DEBUG_CONTEXT_MAX; i++) + { + total += fz_lock_time[i][j]; + } + printf("Lock %d held for %g seconds (%g%%)\n", j, ((double)total)/1000, 100.0*total/prog_time); + } + printf("Total program time %g seconds\n", ((double)prog_time)/1000); +} + +#endif static int find_context(fz_context *ctx) { @@ -277,6 +320,14 @@ static int find_context(fz_context *ctx) { gottit = 1; fz_lock_debug_contexts[i] = ctx; +#ifdef FITZ_DEBUG_LOCKING_TIMES + if (fz_debug_locking_inited == 0) + { + fz_debug_locking_inited = 1; + fz_lock_program_start = ms_clock(); + atexit(dump_lock_times); + } +#endif } ctx->locks->unlock(ctx->locks->user, FZ_LOCK_ALLOC); if (gottit) @@ -327,6 +378,9 @@ void fz_lock_debug_lock(fz_context *ctx, int lock) } } fz_locks_debug[idx][lock] = 1; +#ifdef FITZ_DEBUG_LOCKING_TIMES + fz_lock_taken[idx][lock] = clock(); +#endif } void fz_lock_debug_unlock(fz_context *ctx, int lock) @@ -340,6 +394,9 @@ void fz_lock_debug_unlock(fz_context *ctx, int lock) fprintf(stderr, "Attempt to release lock %d when not held!\n", lock); } fz_locks_debug[idx][lock] = 0; +#ifdef FITZ_DEBUG_LOCKING_TIMES + fz_lock_time[idx][lock] += clock() - fz_lock_taken[idx][lock]; +#endif } #endif |