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Pass alloc_ctx down profiling path.

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With this change, when profiling is enabled, we avoid doing redundant rtree
lookups. Also changed dalloc_atx_t to alloc_atx_t, as it's now used on
allocation path as well (to speed up profiling).
This commit is contained in:
Qi Wang 2017-04-11 18:13:10 -07:00 committed by Qi Wang
parent f35213bae4
commit ccfe68a916
9 changed files with 133 additions and 82 deletions
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51
include/jemalloc/internal/arena_inlines_b.h
View File

@ -3,9 +3,10 @@
#ifndef JEMALLOC_ENABLE_INLINE
szind_t arena_bin_index(arena_t *arena, arena_bin_t *bin);
prof_tctx_t *arena_prof_tctx_get(tsdn_t *tsdn, const void *ptr);
prof_tctx_t *arena_prof_tctx_get(tsdn_t *tsdn, const void *ptr,
alloc_ctx_t *ctx);
void arena_prof_tctx_set(tsdn_t *tsdn, const void *ptr, size_t usize,
prof_tctx_t *tctx);
alloc_ctx_t *ctx, prof_tctx_t *tctx);
void arena_prof_tctx_reset(tsdn_t *tsdn, const void *ptr, prof_tctx_t *tctx);
void arena_decay_ticks(tsdn_t *tsdn, arena_t *arena, unsigned nticks);
void arena_decay_tick(tsdn_t *tsdn, arena_t *arena);
@ -16,10 +17,10 @@ size_t arena_salloc(tsdn_t *tsdn, const void *ptr);
size_t arena_vsalloc(tsdn_t *tsdn, const void *ptr);
void arena_dalloc_no_tcache(tsdn_t *tsdn, void *ptr);
void arena_dalloc(tsdn_t *tsdn, void *ptr, tcache_t *tcache,
dalloc_ctx_t *dalloc_ctx, bool slow_path);
alloc_ctx_t *alloc_ctx, bool slow_path);
void arena_sdalloc_no_tcache(tsdn_t *tsdn, void *ptr, size_t size);
void arena_sdalloc(tsdn_t *tsdn, void *ptr, size_t size, tcache_t *tcache,
dalloc_ctx_t *dalloc_ctx, bool slow_path);
alloc_ctx_t *alloc_ctx, bool slow_path);
#endif
#if (defined(JEMALLOC_ENABLE_INLINE) || defined(JEMALLOC_ARENA_C_))
@ -30,28 +31,42 @@ arena_bin_index(arena_t *arena, arena_bin_t *bin) {
return binind;
}
JEMALLOC_INLINE prof_tctx_t *
arena_prof_tctx_get(tsdn_t *tsdn, const void *ptr) {
JEMALLOC_ALWAYS_INLINE prof_tctx_t *
arena_prof_tctx_get(tsdn_t *tsdn, const void *ptr, alloc_ctx_t *alloc_ctx) {
cassert(config_prof);
assert(ptr != NULL);
/* Static check. */
if (alloc_ctx == NULL) {
const extent_t *extent = iealloc(tsdn, ptr);
if (unlikely(!extent_slab_get(extent))) {
return large_prof_tctx_get(tsdn, extent);
}
} else {
if (unlikely(!alloc_ctx->slab)) {
return large_prof_tctx_get(tsdn, iealloc(tsdn, ptr));
}
}
return (prof_tctx_t *)(uintptr_t)1U;
}
JEMALLOC_INLINE void
JEMALLOC_ALWAYS_INLINE void
arena_prof_tctx_set(tsdn_t *tsdn, const void *ptr, size_t usize,
prof_tctx_t *tctx) {
alloc_ctx_t *alloc_ctx, prof_tctx_t *tctx) {
cassert(config_prof);
assert(ptr != NULL);
/* Static check. */
if (alloc_ctx == NULL) {
extent_t *extent = iealloc(tsdn, ptr);
if (unlikely(!extent_slab_get(extent))) {
large_prof_tctx_set(tsdn, extent, tctx);
}
} else {
if (unlikely(!alloc_ctx->slab)) {
large_prof_tctx_set(tsdn, iealloc(tsdn, ptr), tctx);
}
}
}
JEMALLOC_INLINE void
@ -196,7 +211,7 @@ arena_dalloc_no_tcache(tsdn_t *tsdn, void *ptr) {
JEMALLOC_ALWAYS_INLINE void
arena_dalloc(tsdn_t *tsdn, void *ptr, tcache_t *tcache,
dalloc_ctx_t *dalloc_ctx, bool slow_path) {
alloc_ctx_t *alloc_ctx, bool slow_path) {
assert(!tsdn_null(tsdn) || tcache == NULL);
assert(ptr != NULL);
@ -208,9 +223,9 @@ arena_dalloc(tsdn_t *tsdn, void *ptr, tcache_t *tcache,
szind_t szind;
bool slab;
rtree_ctx_t *rtree_ctx;
if (dalloc_ctx != NULL) {
szind = dalloc_ctx->szind;
slab = dalloc_ctx->slab;
if (alloc_ctx != NULL) {
szind = alloc_ctx->szind;
slab = alloc_ctx->slab;
assert(szind != NSIZES);
} else {
rtree_ctx = tsd_rtree_ctx(tsdn_tsd(tsdn));
@ -293,7 +308,7 @@ arena_sdalloc_no_tcache(tsdn_t *tsdn, void *ptr, size_t size) {
JEMALLOC_ALWAYS_INLINE void
arena_sdalloc(tsdn_t *tsdn, void *ptr, size_t size, tcache_t *tcache,
dalloc_ctx_t *dalloc_ctx, bool slow_path) {
alloc_ctx_t *alloc_ctx, bool slow_path) {
assert(!tsdn_null(tsdn) || tcache == NULL);
assert(ptr != NULL);
assert(size <= LARGE_MAXCLASS);
@ -305,9 +320,9 @@ arena_sdalloc(tsdn_t *tsdn, void *ptr, size_t size, tcache_t *tcache,
szind_t szind;
bool slab;
UNUSED dalloc_ctx_t local_ctx;
UNUSED alloc_ctx_t local_ctx;
if (config_prof && opt_prof) {
if (dalloc_ctx == NULL) {
if (alloc_ctx == NULL) {
/* Uncommon case and should be a static check. */
rtree_ctx_t rtree_ctx_fallback;
rtree_ctx_t *rtree_ctx = tsdn_rtree_ctx(tsdn,
@ -316,10 +331,10 @@ arena_sdalloc(tsdn_t *tsdn, void *ptr, size_t size, tcache_t *tcache,
(uintptr_t)ptr, true, &local_ctx.szind,
&local_ctx.slab);
assert(local_ctx.szind == size2index(size));
dalloc_ctx = &local_ctx;
alloc_ctx = &local_ctx;
}
slab = dalloc_ctx->slab;
szind = dalloc_ctx->szind;
slab = alloc_ctx->slab;
szind = alloc_ctx->szind;
} else {
/*
* There is no risk of being confused by a promoted sampled

4
include/jemalloc/internal/arena_structs_b.h
View File

@ -260,8 +260,8 @@ struct arena_tdata_s {
ticker_t decay_ticker;
};
/* Used to pass rtree lookup context down the deallocation path. */
struct dalloc_ctx_s {
/* Used to pass rtree lookup context down the path. */
struct alloc_ctx_s {
szind_t szind;
bool slab;
};

2
include/jemalloc/internal/arena_types.h
View File

@ -19,7 +19,7 @@ typedef struct arena_decay_s arena_decay_t;
typedef struct arena_bin_s arena_bin_t;
typedef struct arena_s arena_t;
typedef struct arena_tdata_s arena_tdata_t;
typedef struct dalloc_ctx_s dalloc_ctx_t;
typedef struct alloc_ctx_s alloc_ctx_t;
typedef enum {
percpu_arena_disabled = 0,

12
include/jemalloc/internal/jemalloc_internal_inlines_c.h
View File

@ -15,10 +15,10 @@ void *ipalloct(tsdn_t *tsdn, size_t usize, size_t alignment, bool zero,
void *ipalloc(tsd_t *tsd, size_t usize, size_t alignment, bool zero);
size_t ivsalloc(tsdn_t *tsdn, const void *ptr);
void idalloctm(tsdn_t *tsdn, void *ptr, tcache_t *tcache,
dalloc_ctx_t *dalloc_ctx, bool is_internal, bool slow_path);
alloc_ctx_t *alloc_ctx, bool is_internal, bool slow_path);
void idalloc(tsd_t *tsd, void *ptr);
void isdalloct(tsdn_t *tsdn, void *ptr, size_t size, tcache_t *tcache,
dalloc_ctx_t *dalloc_ctx, bool slow_path);
alloc_ctx_t *alloc_ctx, bool slow_path);
void *iralloct_realign(tsdn_t *tsdn, void *ptr, size_t oldsize, size_t size,
size_t extra, size_t alignment, bool zero, tcache_t *tcache,
arena_t *arena);
@ -107,7 +107,7 @@ ivsalloc(tsdn_t *tsdn, const void *ptr) {
}
JEMALLOC_ALWAYS_INLINE void
idalloctm(tsdn_t *tsdn, void *ptr, tcache_t *tcache, dalloc_ctx_t *dalloc_ctx,
idalloctm(tsdn_t *tsdn, void *ptr, tcache_t *tcache, alloc_ctx_t *alloc_ctx,
bool is_internal, bool slow_path) {
assert(ptr != NULL);
assert(!is_internal || tcache == NULL);
@ -120,7 +120,7 @@ idalloctm(tsdn_t *tsdn, void *ptr, tcache_t *tcache, dalloc_ctx_t *dalloc_ctx,
if (!is_internal && *tsd_reentrancy_levelp_get(tsdn_tsd(tsdn)) != 0) {
tcache = NULL;
}
arena_dalloc(tsdn, ptr, tcache, dalloc_ctx, slow_path);
arena_dalloc(tsdn, ptr, tcache, alloc_ctx, slow_path);
}
JEMALLOC_ALWAYS_INLINE void
@ -130,9 +130,9 @@ idalloc(tsd_t *tsd, void *ptr) {
JEMALLOC_ALWAYS_INLINE void
isdalloct(tsdn_t *tsdn, void *ptr, size_t size, tcache_t *tcache,
dalloc_ctx_t *dalloc_ctx, bool slow_path) {
alloc_ctx_t *alloc_ctx, bool slow_path) {
witness_assert_depth_to_rank(tsdn, WITNESS_RANK_CORE, 0);
arena_sdalloc(tsdn, ptr, size, tcache, dalloc_ctx, slow_path);
arena_sdalloc(tsdn, ptr, size, tcache, alloc_ctx, slow_path);
}
JEMALLOC_ALWAYS_INLINE void *

33
include/jemalloc/internal/prof_inlines_b.h
View File

@ -5,20 +5,22 @@
bool prof_active_get_unlocked(void);
bool prof_gdump_get_unlocked(void);
prof_tdata_t *prof_tdata_get(tsd_t *tsd, bool create);
prof_tctx_t *prof_tctx_get(tsdn_t *tsdn, const void *ptr);
prof_tctx_t *prof_tctx_get(tsdn_t *tsdn, const void *ptr,
alloc_ctx_t *alloc_ctx);
void prof_tctx_set(tsdn_t *tsdn, const void *ptr, size_t usize,
prof_tctx_t *tctx);
alloc_ctx_t *alloc_ctx, prof_tctx_t *tctx);
void prof_tctx_reset(tsdn_t *tsdn, const void *ptr, prof_tctx_t *tctx);
bool prof_sample_accum_update(tsd_t *tsd, size_t usize, bool update,
prof_tdata_t **tdata_out);
prof_tctx_t *prof_alloc_prep(tsd_t *tsd, size_t usize, bool prof_active,
bool update);
void prof_malloc(tsdn_t *tsdn, const void *ptr, size_t usize,
prof_tctx_t *tctx);
alloc_ctx_t *alloc_ctx, prof_tctx_t *tctx);
void prof_realloc(tsd_t *tsd, const void *ptr, size_t usize,
prof_tctx_t *tctx, bool prof_active, bool updated, const void *old_ptr,
size_t old_usize, prof_tctx_t *old_tctx);
void prof_free(tsd_t *tsd, const void *ptr, size_t usize);
void prof_free(tsd_t *tsd, const void *ptr, size_t usize,
alloc_ctx_t *alloc_ctx);
#endif
#if (defined(JEMALLOC_ENABLE_INLINE) || defined(JEMALLOC_PROF_C_))
@ -67,19 +69,20 @@ prof_tdata_get(tsd_t *tsd, bool create) {
}
JEMALLOC_ALWAYS_INLINE prof_tctx_t *
prof_tctx_get(tsdn_t *tsdn, const void *ptr) {
prof_tctx_get(tsdn_t *tsdn, const void *ptr, alloc_ctx_t *alloc_ctx) {
cassert(config_prof);
assert(ptr != NULL);
return arena_prof_tctx_get(tsdn, ptr);
return arena_prof_tctx_get(tsdn, ptr, alloc_ctx);
}
JEMALLOC_ALWAYS_INLINE void
prof_tctx_set(tsdn_t *tsdn, const void *ptr, size_t usize, prof_tctx_t *tctx) {
prof_tctx_set(tsdn_t *tsdn, const void *ptr, size_t usize,
alloc_ctx_t *alloc_ctx, prof_tctx_t *tctx) {
cassert(config_prof);
assert(ptr != NULL);
arena_prof_tctx_set(tsdn, ptr, usize, tctx);
arena_prof_tctx_set(tsdn, ptr, usize, alloc_ctx, tctx);
}
JEMALLOC_ALWAYS_INLINE void
@ -145,7 +148,8 @@ prof_alloc_prep(tsd_t *tsd, size_t usize, bool prof_active, bool update) {
}
JEMALLOC_ALWAYS_INLINE void
prof_malloc(tsdn_t *tsdn, const void *ptr, size_t usize, prof_tctx_t *tctx) {
prof_malloc(tsdn_t *tsdn, const void *ptr, size_t usize, alloc_ctx_t *alloc_ctx,
prof_tctx_t *tctx) {
cassert(config_prof);
assert(ptr != NULL);
assert(usize == isalloc(tsdn, ptr));
@ -153,7 +157,8 @@ prof_malloc(tsdn_t *tsdn, const void *ptr, size_t usize, prof_tctx_t *tctx) {
if (unlikely((uintptr_t)tctx > (uintptr_t)1U)) {
prof_malloc_sample_object(tsdn, ptr, usize, tctx);
} else {
prof_tctx_set(tsdn, ptr, usize, (prof_tctx_t *)(uintptr_t)1U);
prof_tctx_set(tsdn, ptr, usize, alloc_ctx,
(prof_tctx_t *)(uintptr_t)1U);
}
}
@ -188,7 +193,7 @@ prof_realloc(tsd_t *tsd, const void *ptr, size_t usize, prof_tctx_t *tctx,
if (unlikely(sampled)) {
prof_malloc_sample_object(tsd_tsdn(tsd), ptr, usize, tctx);
} else if (moved) {
prof_tctx_set(tsd_tsdn(tsd), ptr, usize,
prof_tctx_set(tsd_tsdn(tsd), ptr, usize, NULL,
(prof_tctx_t *)(uintptr_t)1U);
} else if (unlikely(old_sampled)) {
/*
@ -199,7 +204,7 @@ prof_realloc(tsd_t *tsd, const void *ptr, size_t usize, prof_tctx_t *tctx,
*/
prof_tctx_reset(tsd_tsdn(tsd), ptr, tctx);
} else {
assert((uintptr_t)prof_tctx_get(tsd_tsdn(tsd), ptr) ==
assert((uintptr_t)prof_tctx_get(tsd_tsdn(tsd), ptr, NULL) ==
(uintptr_t)1U);
}
@ -216,8 +221,8 @@ prof_realloc(tsd_t *tsd, const void *ptr, size_t usize, prof_tctx_t *tctx,
}
JEMALLOC_ALWAYS_INLINE void
prof_free(tsd_t *tsd, const void *ptr, size_t usize) {
prof_tctx_t *tctx = prof_tctx_get(tsd_tsdn(tsd), ptr);
prof_free(tsd_t *tsd, const void *ptr, size_t usize, alloc_ctx_t *alloc_ctx) {
prof_tctx_t *tctx = prof_tctx_get(tsd_tsdn(tsd), ptr, alloc_ctx);
cassert(config_prof);
assert(usize == isalloc(tsd_tsdn(tsd), ptr));

11
src/arena.c
View File

@ -1064,12 +1064,19 @@ arena_reset(tsd_t *tsd, arena_t *arena) {
size_t usize;
malloc_mutex_unlock(tsd_tsdn(tsd), &arena->large_mtx);
alloc_ctx_t alloc_ctx;
rtree_ctx_t *rtree_ctx = tsd_rtree_ctx(tsd);
rtree_szind_slab_read(tsd_tsdn(tsd), &extents_rtree, rtree_ctx,
(uintptr_t)ptr, true, &alloc_ctx.szind, &alloc_ctx.slab);
assert(alloc_ctx.szind != NSIZES);
if (config_stats || (config_prof && opt_prof)) {
usize = isalloc(tsd_tsdn(tsd), ptr);
usize = index2size(alloc_ctx.szind);
assert(usize == isalloc(tsd_tsdn(tsd), ptr));
}
/* Remove large allocation from prof sample set. */
if (config_prof && opt_prof) {
prof_free(tsd, ptr, usize);
prof_free(tsd, ptr, usize, &alloc_ctx);
}
large_dalloc(tsd_tsdn(tsd), extent);
malloc_mutex_lock(tsd_tsdn(tsd), &arena->large_mtx);

84
src/jemalloc.c
View File

@ -1749,7 +1749,14 @@ imalloc_body(static_opts_t *sopts, dynamic_opts_t *dopts) {
*/
prof_tctx_t *tctx = prof_alloc_prep(
tsd, usize, prof_active_get_unlocked(), true);
alloc_ctx_t alloc_ctx;
if (likely((uintptr_t)tctx == (uintptr_t)1U)) {
if (usize > SMALL_MAXCLASS) {
alloc_ctx.slab = false;
} else {
alloc_ctx.slab = true;
}
allocation = imalloc_no_sample(
sopts, dopts, tsd, usize, usize, ind);
} else if ((uintptr_t)tctx > (uintptr_t)1U) {
@ -1759,6 +1766,7 @@ imalloc_body(static_opts_t *sopts, dynamic_opts_t *dopts) {
*/
allocation = imalloc_sample(
sopts, dopts, tsd, usize, ind);
alloc_ctx.slab = false;
} else {
allocation = NULL;
}
@ -1767,9 +1775,7 @@ imalloc_body(static_opts_t *sopts, dynamic_opts_t *dopts) {
prof_alloc_rollback(tsd, tctx, true);
goto label_oom;
}
prof_malloc(tsd_tsdn(tsd), allocation, usize, tctx);
prof_malloc(tsd_tsdn(tsd), allocation, usize, &alloc_ctx, tctx);
} else {
/*
* If dopts->alignment > 0, then ind is still 0, but usize was
@ -2016,13 +2022,14 @@ irealloc_prof_sample(tsd_t *tsd, void *old_ptr, size_t old_usize, size_t usize,
}
JEMALLOC_ALWAYS_INLINE_C void *
irealloc_prof(tsd_t *tsd, void *old_ptr, size_t old_usize, size_t usize) {
irealloc_prof(tsd_t *tsd, void *old_ptr, size_t old_usize, size_t usize,
alloc_ctx_t *alloc_ctx) {
void *p;
bool prof_active;
prof_tctx_t *old_tctx, *tctx;
prof_active = prof_active_get_unlocked();
old_tctx = prof_tctx_get(tsd_tsdn(tsd), old_ptr);
old_tctx = prof_tctx_get(tsd_tsdn(tsd), old_ptr, alloc_ctx);
tctx = prof_alloc_prep(tsd, usize, prof_active, true);
if (unlikely((uintptr_t)tctx != (uintptr_t)1U)) {
p = irealloc_prof_sample(tsd, old_ptr, old_usize, usize, tctx);
@ -2048,28 +2055,28 @@ ifree(tsd_t *tsd, void *ptr, tcache_t *tcache, bool slow_path) {
assert(ptr != NULL);
assert(malloc_initialized() || IS_INITIALIZER);
dalloc_ctx_t dalloc_ctx;
alloc_ctx_t alloc_ctx;
rtree_ctx_t *rtree_ctx = tsd_rtree_ctx(tsd);
rtree_szind_slab_read(tsd_tsdn(tsd), &extents_rtree, rtree_ctx,
(uintptr_t)ptr, true, &dalloc_ctx.szind, &dalloc_ctx.slab);
assert(dalloc_ctx.szind != NSIZES);
(uintptr_t)ptr, true, &alloc_ctx.szind, &alloc_ctx.slab);
assert(alloc_ctx.szind != NSIZES);
size_t usize;
if (config_prof && opt_prof) {
usize = index2size(dalloc_ctx.szind);
prof_free(tsd, ptr, usize);
usize = index2size(alloc_ctx.szind);
prof_free(tsd, ptr, usize, &alloc_ctx);
} else if (config_stats) {
usize = index2size(dalloc_ctx.szind);
usize = index2size(alloc_ctx.szind);
}
if (config_stats) {
*tsd_thread_deallocatedp_get(tsd) += usize;
}
if (likely(!slow_path)) {
idalloctm(tsd_tsdn(tsd), ptr, tcache, &dalloc_ctx, false,
idalloctm(tsd_tsdn(tsd), ptr, tcache, &alloc_ctx, false,
false);
} else {
idalloctm(tsd_tsdn(tsd), ptr, tcache, &dalloc_ctx, false,
idalloctm(tsd_tsdn(tsd), ptr, tcache, &alloc_ctx, false,
true);
}
}
@ -2083,14 +2090,14 @@ isfree(tsd_t *tsd, void *ptr, size_t usize, tcache_t *tcache, bool slow_path) {
assert(ptr != NULL);
assert(malloc_initialized() || IS_INITIALIZER);
dalloc_ctx_t dalloc_ctx, *ctx;
alloc_ctx_t alloc_ctx, *ctx;
if (config_prof && opt_prof) {
rtree_ctx_t *rtree_ctx = tsd_rtree_ctx(tsd);
rtree_szind_slab_read(tsd_tsdn(tsd), &extents_rtree, rtree_ctx,
(uintptr_t)ptr, true, &dalloc_ctx.szind, &dalloc_ctx.slab);
assert(dalloc_ctx.szind == size2index(usize));
prof_free(tsd, ptr, usize);
ctx = &dalloc_ctx;
(uintptr_t)ptr, true, &alloc_ctx.szind, &alloc_ctx.slab);
assert(alloc_ctx.szind == size2index(usize));
ctx = &alloc_ctx;
prof_free(tsd, ptr, usize, ctx);
} else {
ctx = NULL;
}
@ -2138,11 +2145,18 @@ je_realloc(void *ptr, size_t size) {
witness_assert_lockless(tsd_tsdn(tsd));
old_usize = isalloc(tsd_tsdn(tsd), ptr);
alloc_ctx_t alloc_ctx;
rtree_ctx_t *rtree_ctx = tsd_rtree_ctx(tsd);
rtree_szind_slab_read(tsd_tsdn(tsd), &extents_rtree, rtree_ctx,
(uintptr_t)ptr, true, &alloc_ctx.szind, &alloc_ctx.slab);
assert(alloc_ctx.szind != NSIZES);
old_usize = index2size(alloc_ctx.szind);
assert(old_usize == isalloc(tsd_tsdn(tsd), ptr));
if (config_prof && opt_prof) {
usize = s2u(size);
ret = unlikely(usize == 0 || usize > LARGE_MAXCLASS) ?
NULL : irealloc_prof(tsd, ptr, old_usize, usize);
NULL : irealloc_prof(tsd, ptr, old_usize, usize,
&alloc_ctx);
} else {
if (config_stats) {
usize = s2u(size);
@ -2398,13 +2412,13 @@ irallocx_prof_sample(tsdn_t *tsdn, void *old_ptr, size_t old_usize,
JEMALLOC_ALWAYS_INLINE_C void *
irallocx_prof(tsd_t *tsd, void *old_ptr, size_t old_usize, size_t size,
size_t alignment, size_t *usize, bool zero, tcache_t *tcache,
arena_t *arena) {
arena_t *arena, alloc_ctx_t *alloc_ctx) {
void *p;
bool prof_active;
prof_tctx_t *old_tctx, *tctx;
prof_active = prof_active_get_unlocked();
old_tctx = prof_tctx_get(tsd_tsdn(tsd), old_ptr);
old_tctx = prof_tctx_get(tsd_tsdn(tsd), old_ptr, alloc_ctx);
tctx = prof_alloc_prep(tsd, *usize, prof_active, false);
if (unlikely((uintptr_t)tctx != (uintptr_t)1U)) {
p = irallocx_prof_sample(tsd_tsdn(tsd), old_ptr, old_usize,
@ -2474,15 +2488,20 @@ je_rallocx(void *ptr, size_t size, int flags) {
tcache = tcache_get(tsd);
}
old_usize = isalloc(tsd_tsdn(tsd), ptr);
alloc_ctx_t alloc_ctx;
rtree_ctx_t *rtree_ctx = tsd_rtree_ctx(tsd);
rtree_szind_slab_read(tsd_tsdn(tsd), &extents_rtree, rtree_ctx,
(uintptr_t)ptr, true, &alloc_ctx.szind, &alloc_ctx.slab);
assert(alloc_ctx.szind != NSIZES);
old_usize = index2size(alloc_ctx.szind);
assert(old_usize == isalloc(tsd_tsdn(tsd), ptr));
if (config_prof && opt_prof) {
usize = (alignment == 0) ? s2u(size) : sa2u(size, alignment);
if (unlikely(usize == 0 || usize > LARGE_MAXCLASS)) {
goto label_oom;
}
p = irallocx_prof(tsd, ptr, old_usize, size, alignment, &usize,
zero, tcache, arena);
zero, tcache, arena, &alloc_ctx);
if (unlikely(p == NULL)) {
goto label_oom;
}
@ -2544,13 +2563,13 @@ ixallocx_prof_sample(tsdn_t *tsdn, void *ptr, size_t old_usize, size_t size,
JEMALLOC_ALWAYS_INLINE_C size_t
ixallocx_prof(tsd_t *tsd, void *ptr, size_t old_usize, size_t size,
size_t extra, size_t alignment, bool zero) {
size_t extra, size_t alignment, bool zero, alloc_ctx_t *alloc_ctx) {
size_t usize_max, usize;
bool prof_active;
prof_tctx_t *old_tctx, *tctx;
prof_active = prof_active_get_unlocked();
old_tctx = prof_tctx_get(tsd_tsdn(tsd), ptr);
old_tctx = prof_tctx_get(tsd_tsdn(tsd), ptr, alloc_ctx);
/*
* usize isn't knowable before ixalloc() returns when extra is non-zero.
* Therefore, compute its maximum possible value and use that in
@ -2605,8 +2624,13 @@ je_xallocx(void *ptr, size_t size, size_t extra, int flags) {
tsd = tsd_fetch();
witness_assert_lockless(tsd_tsdn(tsd));
old_usize = isalloc(tsd_tsdn(tsd), ptr);
alloc_ctx_t alloc_ctx;
rtree_ctx_t *rtree_ctx = tsd_rtree_ctx(tsd);
rtree_szind_slab_read(tsd_tsdn(tsd), &extents_rtree, rtree_ctx,
(uintptr_t)ptr, true, &alloc_ctx.szind, &alloc_ctx.slab);
assert(alloc_ctx.szind != NSIZES);
old_usize = index2size(alloc_ctx.szind);
assert(old_usize == isalloc(tsd_tsdn(tsd), ptr));
/*
* The API explicitly absolves itself of protecting against (size +
* extra) numerical overflow, but we may need to clamp extra to avoid
@ -2626,7 +2650,7 @@ je_xallocx(void *ptr, size_t size, size_t extra, int flags) {
if (config_prof && opt_prof) {
usize = ixallocx_prof(tsd, ptr, old_usize, size, extra,
alignment, zero);
alignment, zero, &alloc_ctx);
} else {
usize = ixallocx_helper(tsd_tsdn(tsd), ptr, old_usize, size,
extra, alignment, zero);

2
src/prof.c
View File

@ -234,7 +234,7 @@ prof_alloc_rollback(tsd_t *tsd, prof_tctx_t *tctx, bool updated) {
void
prof_malloc_sample_object(tsdn_t *tsdn, const void *ptr, size_t usize,
prof_tctx_t *tctx) {
prof_tctx_set(tsdn, ptr, usize, tctx);
prof_tctx_set(tsdn, ptr, usize, NULL, tctx);
malloc_mutex_lock(tsdn, tctx->tdata->lock);
tctx->cnts.curobjs++;

4
test/unit/prof_tctx.c
View File

@ -15,7 +15,7 @@ TEST_BEGIN(test_prof_realloc) {
prof_cnt_all(&curobjs_0, NULL, NULL, NULL);
p = mallocx(1024, flags);
assert_ptr_not_null(p, "Unexpected mallocx() failure");
tctx_p = prof_tctx_get(tsdn, p);
tctx_p = prof_tctx_get(tsdn, p, NULL);
assert_ptr_ne(tctx_p, (prof_tctx_t *)(uintptr_t)1U,
"Expected valid tctx");
prof_cnt_all(&curobjs_1, NULL, NULL, NULL);
@ -25,7 +25,7 @@ TEST_BEGIN(test_prof_realloc) {
q = rallocx(p, 2048, flags);
assert_ptr_ne(p, q, "Expected move");
assert_ptr_not_null(p, "Unexpected rmallocx() failure");
tctx_q = prof_tctx_get(tsdn, q);
tctx_q = prof_tctx_get(tsdn, q, NULL);
assert_ptr_ne(tctx_q, (prof_tctx_t *)(uintptr_t)1U,
"Expected valid tctx");
prof_cnt_all(&curobjs_2, NULL, NULL, NULL);