77cccac8cd
This is part of a broader change to make header files better represent the dependencies between one another (see https://github.com/jemalloc/jemalloc/issues/533). It breaks up component headers into smaller parts that can be made to have a simpler dependency graph. For the autogenerated headers (smoothstep.h and size_classes.h), no splitting was necessary, so I didn't add support to emit multiple headers.
307 lines
7.5 KiB
C
307 lines
7.5 KiB
C
#ifndef JEMALLOC_INTERNAL_TCACHE_INLINES_H
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#define JEMALLOC_INTERNAL_TCACHE_INLINES_H
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#ifndef JEMALLOC_ENABLE_INLINE
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void tcache_event(tsd_t *tsd, tcache_t *tcache);
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void tcache_flush(void);
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bool tcache_enabled_get(void);
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tcache_t *tcache_get(tsd_t *tsd, bool create);
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void tcache_enabled_set(bool enabled);
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void *tcache_alloc_easy(tcache_bin_t *tbin, bool *tcache_success);
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void *tcache_alloc_small(tsd_t *tsd, arena_t *arena, tcache_t *tcache,
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size_t size, szind_t ind, bool zero, bool slow_path);
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void *tcache_alloc_large(tsd_t *tsd, arena_t *arena, tcache_t *tcache,
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size_t size, szind_t ind, bool zero, bool slow_path);
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void tcache_dalloc_small(tsd_t *tsd, tcache_t *tcache, void *ptr,
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szind_t binind, bool slow_path);
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void tcache_dalloc_large(tsd_t *tsd, tcache_t *tcache, void *ptr,
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size_t size, bool slow_path);
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tcache_t *tcaches_get(tsd_t *tsd, unsigned ind);
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#endif
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#if (defined(JEMALLOC_ENABLE_INLINE) || defined(JEMALLOC_TCACHE_C_))
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JEMALLOC_INLINE void
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tcache_flush(void)
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{
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tsd_t *tsd;
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cassert(config_tcache);
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tsd = tsd_fetch();
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tcache_cleanup(tsd);
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}
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JEMALLOC_INLINE bool
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tcache_enabled_get(void)
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{
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tsd_t *tsd;
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tcache_enabled_t tcache_enabled;
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cassert(config_tcache);
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tsd = tsd_fetch();
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tcache_enabled = tsd_tcache_enabled_get(tsd);
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if (tcache_enabled == tcache_enabled_default) {
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tcache_enabled = (tcache_enabled_t)opt_tcache;
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tsd_tcache_enabled_set(tsd, tcache_enabled);
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}
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return ((bool)tcache_enabled);
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}
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JEMALLOC_INLINE void
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tcache_enabled_set(bool enabled)
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{
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tsd_t *tsd;
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tcache_enabled_t tcache_enabled;
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cassert(config_tcache);
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tsd = tsd_fetch();
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tcache_enabled = (tcache_enabled_t)enabled;
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tsd_tcache_enabled_set(tsd, tcache_enabled);
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if (!enabled)
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tcache_cleanup(tsd);
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}
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JEMALLOC_ALWAYS_INLINE tcache_t *
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tcache_get(tsd_t *tsd, bool create)
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{
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tcache_t *tcache;
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if (!config_tcache)
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return (NULL);
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tcache = tsd_tcache_get(tsd);
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if (!create)
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return (tcache);
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if (unlikely(tcache == NULL) && tsd_nominal(tsd)) {
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tcache = tcache_get_hard(tsd);
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tsd_tcache_set(tsd, tcache);
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}
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return (tcache);
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}
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JEMALLOC_ALWAYS_INLINE void
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tcache_event(tsd_t *tsd, tcache_t *tcache)
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{
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if (TCACHE_GC_INCR == 0)
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return;
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if (unlikely(ticker_tick(&tcache->gc_ticker)))
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tcache_event_hard(tsd, tcache);
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}
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JEMALLOC_ALWAYS_INLINE void *
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tcache_alloc_easy(tcache_bin_t *tbin, bool *tcache_success)
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{
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void *ret;
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if (unlikely(tbin->ncached == 0)) {
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tbin->low_water = -1;
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*tcache_success = false;
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return (NULL);
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}
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/*
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* tcache_success (instead of ret) should be checked upon the return of
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* this function. We avoid checking (ret == NULL) because there is
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* never a null stored on the avail stack (which is unknown to the
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* compiler), and eagerly checking ret would cause pipeline stall
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* (waiting for the cacheline).
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*/
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*tcache_success = true;
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ret = *(tbin->avail - tbin->ncached);
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tbin->ncached--;
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if (unlikely((int)tbin->ncached < tbin->low_water))
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tbin->low_water = tbin->ncached;
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return (ret);
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}
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JEMALLOC_ALWAYS_INLINE void *
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tcache_alloc_small(tsd_t *tsd, arena_t *arena, tcache_t *tcache, size_t size,
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szind_t binind, bool zero, bool slow_path)
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{
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void *ret;
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tcache_bin_t *tbin;
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bool tcache_success;
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size_t usize JEMALLOC_CC_SILENCE_INIT(0);
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assert(binind < NBINS);
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tbin = &tcache->tbins[binind];
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ret = tcache_alloc_easy(tbin, &tcache_success);
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assert(tcache_success == (ret != NULL));
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if (unlikely(!tcache_success)) {
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bool tcache_hard_success;
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arena = arena_choose(tsd, arena);
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if (unlikely(arena == NULL))
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return (NULL);
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ret = tcache_alloc_small_hard(tsd_tsdn(tsd), arena, tcache,
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tbin, binind, &tcache_hard_success);
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if (tcache_hard_success == false)
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return (NULL);
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}
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assert(ret);
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/*
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* Only compute usize if required. The checks in the following if
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* statement are all static.
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*/
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if (config_prof || (slow_path && config_fill) || unlikely(zero)) {
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usize = index2size(binind);
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assert(tcache_salloc(tsd_tsdn(tsd), ret) == usize);
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}
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if (likely(!zero)) {
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if (slow_path && config_fill) {
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if (unlikely(opt_junk_alloc)) {
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arena_alloc_junk_small(ret,
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&arena_bin_info[binind], false);
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} else if (unlikely(opt_zero))
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memset(ret, 0, usize);
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}
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} else {
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if (slow_path && config_fill && unlikely(opt_junk_alloc)) {
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arena_alloc_junk_small(ret, &arena_bin_info[binind],
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true);
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}
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memset(ret, 0, usize);
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}
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if (config_stats)
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tbin->tstats.nrequests++;
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if (config_prof)
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tcache->prof_accumbytes += usize;
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tcache_event(tsd, tcache);
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return (ret);
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}
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JEMALLOC_ALWAYS_INLINE void *
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tcache_alloc_large(tsd_t *tsd, arena_t *arena, tcache_t *tcache, size_t size,
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szind_t binind, bool zero, bool slow_path)
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{
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void *ret;
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tcache_bin_t *tbin;
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bool tcache_success;
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assert(binind < nhbins);
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tbin = &tcache->tbins[binind];
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ret = tcache_alloc_easy(tbin, &tcache_success);
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assert(tcache_success == (ret != NULL));
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if (unlikely(!tcache_success)) {
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/*
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* Only allocate one large object at a time, because it's quite
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* expensive to create one and not use it.
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*/
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arena = arena_choose(tsd, arena);
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if (unlikely(arena == NULL))
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return (NULL);
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ret = large_malloc(tsd_tsdn(tsd), arena, s2u(size), zero);
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if (ret == NULL)
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return (NULL);
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} else {
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size_t usize JEMALLOC_CC_SILENCE_INIT(0);
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/* Only compute usize on demand */
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if (config_prof || (slow_path && config_fill) ||
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unlikely(zero)) {
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usize = index2size(binind);
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assert(usize <= tcache_maxclass);
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}
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if (likely(!zero)) {
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if (slow_path && config_fill) {
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if (unlikely(opt_junk_alloc)) {
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memset(ret, JEMALLOC_ALLOC_JUNK,
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usize);
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} else if (unlikely(opt_zero))
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memset(ret, 0, usize);
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}
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} else
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memset(ret, 0, usize);
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if (config_stats)
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tbin->tstats.nrequests++;
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if (config_prof)
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tcache->prof_accumbytes += usize;
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}
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tcache_event(tsd, tcache);
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return (ret);
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}
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JEMALLOC_ALWAYS_INLINE void
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tcache_dalloc_small(tsd_t *tsd, tcache_t *tcache, void *ptr, szind_t binind,
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bool slow_path)
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{
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tcache_bin_t *tbin;
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tcache_bin_info_t *tbin_info;
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assert(tcache_salloc(tsd_tsdn(tsd), ptr) <= SMALL_MAXCLASS);
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if (slow_path && config_fill && unlikely(opt_junk_free))
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arena_dalloc_junk_small(ptr, &arena_bin_info[binind]);
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tbin = &tcache->tbins[binind];
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tbin_info = &tcache_bin_info[binind];
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if (unlikely(tbin->ncached == tbin_info->ncached_max)) {
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tcache_bin_flush_small(tsd, tcache, tbin, binind,
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(tbin_info->ncached_max >> 1));
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}
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assert(tbin->ncached < tbin_info->ncached_max);
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tbin->ncached++;
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*(tbin->avail - tbin->ncached) = ptr;
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tcache_event(tsd, tcache);
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}
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JEMALLOC_ALWAYS_INLINE void
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tcache_dalloc_large(tsd_t *tsd, tcache_t *tcache, void *ptr, size_t size,
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bool slow_path)
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{
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szind_t binind;
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tcache_bin_t *tbin;
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tcache_bin_info_t *tbin_info;
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assert(tcache_salloc(tsd_tsdn(tsd), ptr) > SMALL_MAXCLASS);
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assert(tcache_salloc(tsd_tsdn(tsd), ptr) <= tcache_maxclass);
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binind = size2index(size);
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if (slow_path && config_fill && unlikely(opt_junk_free))
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large_dalloc_junk(ptr, size);
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tbin = &tcache->tbins[binind];
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tbin_info = &tcache_bin_info[binind];
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if (unlikely(tbin->ncached == tbin_info->ncached_max)) {
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tcache_bin_flush_large(tsd, tbin, binind,
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(tbin_info->ncached_max >> 1), tcache);
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}
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assert(tbin->ncached < tbin_info->ncached_max);
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tbin->ncached++;
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*(tbin->avail - tbin->ncached) = ptr;
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tcache_event(tsd, tcache);
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}
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JEMALLOC_ALWAYS_INLINE tcache_t *
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tcaches_get(tsd_t *tsd, unsigned ind)
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{
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tcaches_t *elm = &tcaches[ind];
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if (unlikely(elm->tcache == NULL)) {
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elm->tcache = tcache_create(tsd_tsdn(tsd), arena_choose(tsd,
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NULL));
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}
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return (elm->tcache);
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}
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#endif
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#endif /* JEMALLOC_INTERNAL_TCACHE_INLINES_H */
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