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Add profiling for the background thread mutex.

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This commit is contained in:
Qi Wang 2017-05-12 16:26:59 -07:00 committed by Qi Wang
parent 2bee0c6251
commit 5f5ed2198e
4 changed files with 21 additions and 6 deletions
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12
include/jemalloc/internal/mutex_externs.h
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@ -10,12 +10,12 @@ extern bool isthreaded;
# define isthreaded true
#endif
bool malloc_mutex_init(malloc_mutex_t *mutex, const char *name,
bool malloc_mutex_init(malloc_mutex_t *mutex, const char *name,
witness_rank_t rank, malloc_mutex_lock_order_t lock_order);
void malloc_mutex_prefork(tsdn_t *tsdn, malloc_mutex_t *mutex);
void malloc_mutex_postfork_parent(tsdn_t *tsdn, malloc_mutex_t *mutex);
void malloc_mutex_postfork_child(tsdn_t *tsdn, malloc_mutex_t *mutex);
bool malloc_mutex_boot(void);
void malloc_mutex_prof_data_reset(tsdn_t *tsdn, malloc_mutex_t *mutex);
void malloc_mutex_prefork(tsdn_t *tsdn, malloc_mutex_t *mutex);
void malloc_mutex_postfork_parent(tsdn_t *tsdn, malloc_mutex_t *mutex);
void malloc_mutex_postfork_child(tsdn_t *tsdn, malloc_mutex_t *mutex);
bool malloc_mutex_boot(void);
void malloc_mutex_prof_data_reset(tsdn_t *tsdn, malloc_mutex_t *mutex);
#endif /* JEMALLOC_INTERNAL_MUTEX_EXTERNS_H */

1
include/jemalloc/internal/mutex_prof.h
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@ -6,6 +6,7 @@
#include "jemalloc/internal/tsd_types.h"
#define MUTEX_PROF_GLOBAL_MUTEXES \
OP(background_thread) \
OP(ctl) \
OP(prof)

12
src/ctl.c
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@ -947,6 +947,15 @@ ctl_refresh(tsdn_t *tsdn) {
READ_GLOBAL_MUTEX_PROF_DATA(global_prof_mutex_prof,
bt2gctx_mtx);
}
if (have_background_thread) {
READ_GLOBAL_MUTEX_PROF_DATA(
global_prof_mutex_background_thread,
background_thread_lock);
} else {
memset(&ctl_stats->mutex_prof_data[
global_prof_mutex_background_thread], 0,
sizeof(mutex_prof_data_t));
}
/* We own ctl mutex already. */
malloc_mutex_prof_read(tsdn,
&ctl_stats->mutex_prof_data[global_prof_mutex_ctl],
@ -2557,6 +2566,9 @@ stats_mutexes_reset_ctl(tsd_t *tsd, const size_t *mib, size_t miblen,
/* Global mutexes: ctl and prof. */
MUTEX_PROF_RESET(ctl_mtx);
if (have_background_thread) {
MUTEX_PROF_RESET(background_thread_lock);
}
if (config_prof && opt_prof) {
MUTEX_PROF_RESET(bt2gctx_mtx);
}

2
src/mutex.c
View File

@ -112,6 +112,8 @@ label_spin_done:
static void
mutex_prof_data_init(mutex_prof_data_t *data) {
memset(data, 0, sizeof(mutex_prof_data_t));
nstime_init(&data->max_wait_time, 0);
nstime_init(&data->tot_wait_time, 0);
data->prev_owner = NULL;
}