Refactor arenas_cache tsd.
Refactor arenas_cache tsd into arenas_tdata, which is a structure of type arena_tdata_t.
This commit is contained in:
Jason Evans
parent
4985dc681e
commit
db927b6727
@ -31,6 +31,7 @@ typedef struct arena_chunk_s arena_chunk_t;
|
||||
typedef struct arena_bin_info_s arena_bin_info_t;
|
||||
typedef struct arena_bin_s arena_bin_t;
|
||||
typedef struct arena_s arena_t;
|
||||
typedef struct arena_tdata_s arena_tdata_t;
|
||||
|
||||
#endif /* JEMALLOC_H_TYPES */
|
||||
/******************************************************************************/
|
||||
@ -403,6 +404,11 @@ struct arena_s {
|
||||
/* bins is used to store trees of free regions. */
|
||||
arena_bin_t bins[NBINS];
|
||||
};
|
||||
|
||||
/* Used in conjunction with tsd for fast arena-related context lookup. */
|
||||
struct arena_tdata_s {
|
||||
arena_t *arena;
|
||||
};
|
||||
#endif /* JEMALLOC_ARENA_STRUCTS_B */
|
||||
|
||||
#endif /* JEMALLOC_H_STRUCTS */
|
||||
|
||||
@ -459,16 +459,18 @@ void bootstrap_free(void *ptr);
|
||||
arena_t *arenas_extend(unsigned ind);
|
||||
arena_t *arena_init(unsigned ind);
|
||||
unsigned narenas_total_get(void);
|
||||
arena_t *arena_get_hard(tsd_t *tsd, unsigned ind, bool init_if_missing);
|
||||
arena_tdata_t *arena_tdata_get_hard(tsd_t *tsd, unsigned ind);
|
||||
arena_t *arena_get_hard(tsd_t *tsd, unsigned ind, bool init_if_missing,
|
||||
arena_tdata_t *tdata);
|
||||
arena_t *arena_choose_hard(tsd_t *tsd);
|
||||
void arena_migrate(tsd_t *tsd, unsigned oldind, unsigned newind);
|
||||
unsigned arena_nbound(unsigned ind);
|
||||
void thread_allocated_cleanup(tsd_t *tsd);
|
||||
void thread_deallocated_cleanup(tsd_t *tsd);
|
||||
void arena_cleanup(tsd_t *tsd);
|
||||
void arenas_cache_cleanup(tsd_t *tsd);
|
||||
void narenas_cache_cleanup(tsd_t *tsd);
|
||||
void arenas_cache_bypass_cleanup(tsd_t *tsd);
|
||||
void arenas_tdata_cleanup(tsd_t *tsd);
|
||||
void narenas_tdata_cleanup(tsd_t *tsd);
|
||||
void arenas_tdata_bypass_cleanup(tsd_t *tsd);
|
||||
void jemalloc_prefork(void);
|
||||
void jemalloc_postfork_parent(void);
|
||||
void jemalloc_postfork_child(void);
|
||||
@ -535,6 +537,8 @@ size_t s2u_lookup(size_t size);
|
||||
size_t s2u(size_t size);
|
||||
size_t sa2u(size_t size, size_t alignment);
|
||||
arena_t *arena_choose(tsd_t *tsd, arena_t *arena);
|
||||
arena_tdata_t *arena_tdata_get(tsd_t *tsd, unsigned ind,
|
||||
bool refresh_if_missing);
|
||||
arena_t *arena_get(tsd_t *tsd, unsigned ind, bool init_if_missing,
|
||||
bool refresh_if_missing);
|
||||
#endif
|
||||
@ -785,32 +789,45 @@ arena_choose(tsd_t *tsd, arena_t *arena)
|
||||
return (ret);
|
||||
}
|
||||
|
||||
JEMALLOC_INLINE arena_tdata_t *
|
||||
arena_tdata_get(tsd_t *tsd, unsigned ind, bool refresh_if_missing)
|
||||
{
|
||||
arena_tdata_t *tdata;
|
||||
arena_tdata_t *arenas_tdata = tsd_arenas_tdata_get(tsd);
|
||||
|
||||
if (unlikely(arenas_tdata == NULL)) {
|
||||
/* arenas_tdata hasn't been initialized yet. */
|
||||
return (arena_tdata_get_hard(tsd, ind));
|
||||
}
|
||||
if (unlikely(ind >= tsd_narenas_tdata_get(tsd))) {
|
||||
/*
|
||||
* ind is invalid, cache is old (too small), or tdata to be
|
||||
* initialized.
|
||||
*/
|
||||
return (refresh_if_missing ? arena_tdata_get_hard(tsd, ind) :
|
||||
NULL);
|
||||
}
|
||||
|
||||
tdata = &arenas_tdata[ind];
|
||||
if (likely(tdata != NULL) || !refresh_if_missing)
|
||||
return (tdata);
|
||||
return (arena_tdata_get_hard(tsd, ind));
|
||||
}
|
||||
|
||||
JEMALLOC_INLINE arena_t *
|
||||
arena_get(tsd_t *tsd, unsigned ind, bool init_if_missing,
|
||||
bool refresh_if_missing)
|
||||
{
|
||||
arena_t *arena;
|
||||
arena_t **arenas_cache = tsd_arenas_cache_get(tsd);
|
||||
arena_tdata_t *tdata;
|
||||
|
||||
/* init_if_missing requires refresh_if_missing. */
|
||||
assert(!init_if_missing || refresh_if_missing);
|
||||
|
||||
if (unlikely(arenas_cache == NULL)) {
|
||||
/* arenas_cache hasn't been initialized yet. */
|
||||
return (arena_get_hard(tsd, ind, init_if_missing));
|
||||
}
|
||||
if (unlikely(ind >= tsd_narenas_cache_get(tsd))) {
|
||||
/*
|
||||
* ind is invalid, cache is old (too small), or arena to be
|
||||
* initialized.
|
||||
*/
|
||||
return (refresh_if_missing ? arena_get_hard(tsd, ind,
|
||||
init_if_missing) : NULL);
|
||||
}
|
||||
arena = arenas_cache[ind];
|
||||
if (likely(arena != NULL) || !refresh_if_missing)
|
||||
return (arena);
|
||||
return (arena_get_hard(tsd, ind, init_if_missing));
|
||||
tdata = arena_tdata_get(tsd, ind, refresh_if_missing);
|
||||
if (unlikely(tdata == NULL || tdata->arena == NULL))
|
||||
return (arena_get_hard(tsd, ind, init_if_missing, tdata));
|
||||
|
||||
return (tdata->arena);
|
||||
}
|
||||
#endif
|
||||
|
||||
|
||||
@ -93,11 +93,13 @@ arena_redzone_corruption
|
||||
arena_run_regind
|
||||
arena_run_to_miscelm
|
||||
arena_salloc
|
||||
arenas_cache_bypass_cleanup
|
||||
arenas_cache_cleanup
|
||||
arenas_tdata_bypass_cleanup
|
||||
arenas_tdata_cleanup
|
||||
arena_sdalloc
|
||||
arena_stats_merge
|
||||
arena_tcache_fill_small
|
||||
arena_tdata_get
|
||||
arena_tdata_get_hard
|
||||
atomic_add_p
|
||||
atomic_add_u
|
||||
atomic_add_uint32
|
||||
@ -311,7 +313,7 @@ map_bias
|
||||
map_misc_offset
|
||||
mb_write
|
||||
mutex_boot
|
||||
narenas_cache_cleanup
|
||||
narenas_tdata_cleanup
|
||||
narenas_total_get
|
||||
ncpus
|
||||
nhbins
|
||||
|
||||
@ -537,9 +537,9 @@ struct tsd_init_head_s {
|
||||
O(thread_deallocated, uint64_t) \
|
||||
O(prof_tdata, prof_tdata_t *) \
|
||||
O(arena, arena_t *) \
|
||||
O(arenas_cache, arena_t **) \
|
||||
O(narenas_cache, unsigned) \
|
||||
O(arenas_cache_bypass, bool) \
|
||||
O(arenas_tdata, arena_tdata_t *) \
|
||||
O(narenas_tdata, unsigned) \
|
||||
O(arenas_tdata_bypass, bool) \
|
||||
O(tcache_enabled, tcache_enabled_t) \
|
||||
O(quarantine, quarantine_t *) \
|
||||
|
||||
|
||||
157
src/jemalloc.c
157
src/jemalloc.c
@ -516,75 +516,100 @@ arena_unbind(tsd_t *tsd, unsigned ind)
|
||||
tsd_arena_set(tsd, NULL);
|
||||
}
|
||||
|
||||
arena_t *
|
||||
arena_get_hard(tsd_t *tsd, unsigned ind, bool init_if_missing)
|
||||
arena_tdata_t *
|
||||
arena_tdata_get_hard(tsd_t *tsd, unsigned ind)
|
||||
{
|
||||
arena_t *arena;
|
||||
arena_t **arenas_cache = tsd_arenas_cache_get(tsd);
|
||||
unsigned narenas_cache = tsd_narenas_cache_get(tsd);
|
||||
arena_tdata_t *tdata, *arenas_tdata_old;
|
||||
arena_tdata_t *arenas_tdata = tsd_arenas_tdata_get(tsd);
|
||||
unsigned narenas_tdata_old, i;
|
||||
unsigned narenas_tdata = tsd_narenas_tdata_get(tsd);
|
||||
unsigned narenas_actual = narenas_total_get();
|
||||
|
||||
/* Deallocate old cache if it's too small. */
|
||||
if (arenas_cache != NULL && narenas_cache < narenas_actual) {
|
||||
a0dalloc(arenas_cache);
|
||||
arenas_cache = NULL;
|
||||
narenas_cache = 0;
|
||||
tsd_arenas_cache_set(tsd, arenas_cache);
|
||||
tsd_narenas_cache_set(tsd, narenas_cache);
|
||||
}
|
||||
|
||||
/* Allocate cache if it's missing. */
|
||||
if (arenas_cache == NULL) {
|
||||
bool *arenas_cache_bypassp = tsd_arenas_cache_bypassp_get(tsd);
|
||||
assert(ind < narenas_actual || !init_if_missing);
|
||||
narenas_cache = (ind < narenas_actual) ? narenas_actual : ind+1;
|
||||
|
||||
if (tsd_nominal(tsd) && !*arenas_cache_bypassp) {
|
||||
*arenas_cache_bypassp = true;
|
||||
arenas_cache = (arena_t **)a0malloc(sizeof(arena_t *) *
|
||||
narenas_cache);
|
||||
*arenas_cache_bypassp = false;
|
||||
}
|
||||
if (arenas_cache == NULL) {
|
||||
/*
|
||||
* This function must always tell the truth, even if
|
||||
* it's slow, so don't let OOM, thread cleanup (note
|
||||
* tsd_nominal check), nor recursive allocation
|
||||
* avoidance (note arenas_cache_bypass check) get in the
|
||||
* way.
|
||||
* Dissociate old tdata array (and set up for deallocation upon return)
|
||||
* if it's too small.
|
||||
*/
|
||||
if (arenas_tdata != NULL && narenas_tdata < narenas_actual) {
|
||||
arenas_tdata_old = arenas_tdata;
|
||||
narenas_tdata_old = narenas_tdata;
|
||||
arenas_tdata = NULL;
|
||||
narenas_tdata = 0;
|
||||
tsd_arenas_tdata_set(tsd, arenas_tdata);
|
||||
tsd_narenas_tdata_set(tsd, narenas_tdata);
|
||||
} else {
|
||||
arenas_tdata_old = NULL;
|
||||
narenas_tdata_old = 0;
|
||||
}
|
||||
|
||||
/* Allocate tdata array if it's missing. */
|
||||
if (arenas_tdata == NULL) {
|
||||
bool *arenas_tdata_bypassp = tsd_arenas_tdata_bypassp_get(tsd);
|
||||
narenas_tdata = (ind < narenas_actual) ? narenas_actual : ind+1;
|
||||
|
||||
if (tsd_nominal(tsd) && !*arenas_tdata_bypassp) {
|
||||
*arenas_tdata_bypassp = true;
|
||||
arenas_tdata = (arena_tdata_t *)a0malloc(
|
||||
sizeof(arena_tdata_t) * narenas_tdata);
|
||||
*arenas_tdata_bypassp = false;
|
||||
}
|
||||
if (arenas_tdata == NULL) {
|
||||
tdata = NULL;
|
||||
goto label_return;
|
||||
}
|
||||
assert(tsd_nominal(tsd) && !*arenas_tdata_bypassp);
|
||||
tsd_arenas_tdata_set(tsd, arenas_tdata);
|
||||
tsd_narenas_tdata_set(tsd, narenas_tdata);
|
||||
}
|
||||
|
||||
/*
|
||||
* Copy to tdata array. It's possible that the actual number of arenas
|
||||
* has increased since narenas_total_get() was called above, but that
|
||||
* causes no correctness issues unless two threads concurrently execute
|
||||
* the arenas.extend mallctl, which we trust mallctl synchronization to
|
||||
* prevent.
|
||||
*/
|
||||
malloc_mutex_lock(&arenas_lock);
|
||||
for (i = 0; i < narenas_actual; i++)
|
||||
arenas_tdata[i].arena = arenas[i];
|
||||
malloc_mutex_unlock(&arenas_lock);
|
||||
if (narenas_tdata > narenas_actual) {
|
||||
memset(&arenas_tdata[narenas_actual], 0, sizeof(arena_tdata_t)
|
||||
* (narenas_tdata - narenas_actual));
|
||||
}
|
||||
|
||||
/* Read the refreshed tdata array. */
|
||||
tdata = &arenas_tdata[ind];
|
||||
label_return:
|
||||
if (arenas_tdata_old != NULL)
|
||||
a0dalloc(arenas_tdata_old);
|
||||
return (tdata);
|
||||
}
|
||||
|
||||
arena_t *
|
||||
arena_get_hard(tsd_t *tsd, unsigned ind, bool init_if_missing,
|
||||
arena_tdata_t *tdata)
|
||||
{
|
||||
arena_t *arena;
|
||||
unsigned narenas_actual;
|
||||
|
||||
if (init_if_missing && tdata != NULL) {
|
||||
tdata->arena = arena_init(ind);
|
||||
if (tdata->arena != NULL)
|
||||
return (tdata->arena);
|
||||
}
|
||||
|
||||
/*
|
||||
* This function must always tell the truth, even if it's slow, so don't
|
||||
* let OOM, thread cleanup (note tsd_nominal check), nor recursive
|
||||
* allocation avoidance (note arenas_tdata_bypass check) get in the way.
|
||||
*/
|
||||
narenas_actual = narenas_total_get();
|
||||
if (ind >= narenas_actual)
|
||||
return (NULL);
|
||||
malloc_mutex_lock(&arenas_lock);
|
||||
arena = arenas[ind];
|
||||
malloc_mutex_unlock(&arenas_lock);
|
||||
return (arena);
|
||||
}
|
||||
assert(tsd_nominal(tsd) && !*arenas_cache_bypassp);
|
||||
tsd_arenas_cache_set(tsd, arenas_cache);
|
||||
tsd_narenas_cache_set(tsd, narenas_cache);
|
||||
}
|
||||
|
||||
/*
|
||||
* Copy to cache. It's possible that the actual number of arenas has
|
||||
* increased since narenas_total_get() was called above, but that causes
|
||||
* no correctness issues unless two threads concurrently execute the
|
||||
* arenas.extend mallctl, which we trust mallctl synchronization to
|
||||
* prevent.
|
||||
*/
|
||||
malloc_mutex_lock(&arenas_lock);
|
||||
memcpy(arenas_cache, arenas, sizeof(arena_t *) * narenas_actual);
|
||||
malloc_mutex_unlock(&arenas_lock);
|
||||
if (narenas_cache > narenas_actual) {
|
||||
memset(&arenas_cache[narenas_actual], 0, sizeof(arena_t *) *
|
||||
(narenas_cache - narenas_actual));
|
||||
}
|
||||
|
||||
/* Read the refreshed cache, and init the arena if necessary. */
|
||||
arena = arenas_cache[ind];
|
||||
if (init_if_missing && arena == NULL)
|
||||
arena = arenas_cache[ind] = arena_init(ind);
|
||||
return (arena);
|
||||
}
|
||||
|
||||
/* Slow path, called only by arena_choose(). */
|
||||
@ -674,26 +699,26 @@ arena_cleanup(tsd_t *tsd)
|
||||
}
|
||||
|
||||
void
|
||||
arenas_cache_cleanup(tsd_t *tsd)
|
||||
arenas_tdata_cleanup(tsd_t *tsd)
|
||||
{
|
||||
arena_t **arenas_cache;
|
||||
arena_tdata_t *arenas_tdata;
|
||||
|
||||
arenas_cache = tsd_arenas_cache_get(tsd);
|
||||
if (arenas_cache != NULL) {
|
||||
tsd_arenas_cache_set(tsd, NULL);
|
||||
a0dalloc(arenas_cache);
|
||||
arenas_tdata = tsd_arenas_tdata_get(tsd);
|
||||
if (arenas_tdata != NULL) {
|
||||
tsd_arenas_tdata_set(tsd, NULL);
|
||||
a0dalloc(arenas_tdata);
|
||||
}
|
||||
}
|
||||
|
||||
void
|
||||
narenas_cache_cleanup(tsd_t *tsd)
|
||||
narenas_tdata_cleanup(tsd_t *tsd)
|
||||
{
|
||||
|
||||
/* Do nothing. */
|
||||
}
|
||||
|
||||
void
|
||||
arenas_cache_bypass_cleanup(tsd_t *tsd)
|
||||
arenas_tdata_bypass_cleanup(tsd_t *tsd)
|
||||
{
|
||||
|
||||
/* Do nothing. */
|
||||
|
||||
@ -113,7 +113,7 @@ malloc_tsd_boot0(void)
|
||||
ncleanups = 0;
|
||||
if (tsd_boot0())
|
||||
return (true);
|
||||
*tsd_arenas_cache_bypassp_get(tsd_fetch()) = true;
|
||||
*tsd_arenas_tdata_bypassp_get(tsd_fetch()) = true;
|
||||
return (false);
|
||||
}
|
||||
|
||||
@ -122,7 +122,7 @@ malloc_tsd_boot1(void)
|
||||
{
|
||||
|
||||
tsd_boot1();
|
||||
*tsd_arenas_cache_bypassp_get(tsd_fetch()) = false;
|
||||
*tsd_arenas_tdata_bypassp_get(tsd_fetch()) = false;
|
||||
}
|
||||
|
||||
#ifdef _WIN32
|
||||
|
||||
Loading…
Reference in New Issue
Block a user