Blame jemalloc/include/jemalloc/internal/tcache_inlines.h

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#ifndef JEMALLOC_INTERNAL_TCACHE_INLINES_H
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#define JEMALLOC_INTERNAL_TCACHE_INLINES_H
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#include "jemalloc/internal/bin.h"
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#include "jemalloc/internal/jemalloc_internal_types.h"
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#include "jemalloc/internal/sc.h"
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#include "jemalloc/internal/sz.h"
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#include "jemalloc/internal/ticker.h"
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#include "jemalloc/internal/util.h"
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static inline bool
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tcache_enabled_get(tsd_t *tsd) {
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	return tsd_tcache_enabled_get(tsd);
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}
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static inline void
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tcache_enabled_set(tsd_t *tsd, bool enabled) {
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	bool was_enabled = tsd_tcache_enabled_get(tsd);
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	if (!was_enabled && enabled) {
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		tsd_tcache_data_init(tsd);
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	} else if (was_enabled && !enabled) {
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		tcache_cleanup(tsd);
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	}
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	/* Commit the state last.  Above calls check current state. */
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	tsd_tcache_enabled_set(tsd, enabled);
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	tsd_slow_update(tsd);
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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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	if (TCACHE_GC_INCR == 0) {
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		return;
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	}
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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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}
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JEMALLOC_ALWAYS_INLINE void *
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tcache_alloc_small(tsd_t *tsd, arena_t *arena, tcache_t *tcache,
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    size_t size, szind_t binind, bool zero, bool slow_path) {
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	void *ret;
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	cache_bin_t *bin;
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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 < SC_NBINS);
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	bin = tcache_small_bin_get(tcache, binind);
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	ret = cache_bin_alloc_easy(bin, &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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		}
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		ret = tcache_alloc_small_hard(tsd_tsdn(tsd), arena, tcache,
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		    bin, 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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	}
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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 = sz_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, &bin_infos[binind],
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				    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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		}
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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, &bin_infos[binind], 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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		bin->tstats.nrequests++;
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	}
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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_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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	void *ret;
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	cache_bin_t *bin;
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	bool tcache_success;
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	assert(binind >= SC_NBINS &&binind < nhbins);
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	bin = tcache_large_bin_get(tcache, binind);
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	ret = cache_bin_alloc_easy(bin, &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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		}
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		ret = large_malloc(tsd_tsdn(tsd), arena, sz_s2u(size), zero);
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		if (ret == NULL) {
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			return NULL;
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		}
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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 = sz_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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			}
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		} else {
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			memset(ret, 0, usize);
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		}
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		if (config_stats) {
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			bin->tstats.nrequests++;
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		}
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		if (config_prof) {
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			tcache->prof_accumbytes += usize;
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		}
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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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	cache_bin_t *bin;
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	cache_bin_info_t *bin_info;
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	assert(tcache_salloc(tsd_tsdn(tsd), ptr)
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	    <= SC_SMALL_MAXCLASS);
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	if (slow_path && config_fill && unlikely(opt_junk_free)) {
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		arena_dalloc_junk_small(ptr, &bin_infos[binind]);
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	}
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	bin = tcache_small_bin_get(tcache, binind);
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	bin_info = &tcache_bin_info[binind];
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	if (unlikely(!cache_bin_dalloc_easy(bin, bin_info, ptr))) {
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		tcache_bin_flush_small(tsd, tcache, bin, binind,
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		    (bin_info->ncached_max >> 1));
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		bool ret = cache_bin_dalloc_easy(bin, bin_info, ptr);
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		assert(ret);
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	}
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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, szind_t binind,
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    bool slow_path) {
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	cache_bin_t *bin;
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	cache_bin_info_t *bin_info;
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	assert(tcache_salloc(tsd_tsdn(tsd), ptr)
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	    > SC_SMALL_MAXCLASS);
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	assert(tcache_salloc(tsd_tsdn(tsd), ptr) <= tcache_maxclass);
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	if (slow_path && config_fill && unlikely(opt_junk_free)) {
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		large_dalloc_junk(ptr, sz_index2size(binind));
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	}
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	bin = tcache_large_bin_get(tcache, binind);
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	bin_info = &tcache_bin_info[binind];
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	if (unlikely(bin->ncached == bin_info->ncached_max)) {
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		tcache_bin_flush_large(tsd, bin, binind,
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		    (bin_info->ncached_max >> 1), tcache);
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	}
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	assert(bin->ncached < bin_info->ncached_max);
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	bin->ncached++;
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	*(bin->avail - bin->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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	tcaches_t *elm = &tcaches[ind];
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	if (unlikely(elm->tcache == NULL)) {
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		malloc_printf("<jemalloc>: invalid tcache id (%u).\n", ind);
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		abort();
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	} else if (unlikely(elm->tcache == TCACHES_ELM_NEED_REINIT)) {
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		elm->tcache = tcache_create_explicit(tsd);
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	}
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	return elm->tcache;
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}
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#endif /* JEMALLOC_INTERNAL_TCACHE_INLINES_H */