diff options
Diffstat (limited to 'deps/jemalloc/include/jemalloc/internal/tcache_inlines.h')
| -rw-r--r-- | deps/jemalloc/include/jemalloc/internal/tcache_inlines.h | 193 |
1 files changed, 193 insertions, 0 deletions
diff --git a/deps/jemalloc/include/jemalloc/internal/tcache_inlines.h b/deps/jemalloc/include/jemalloc/internal/tcache_inlines.h new file mode 100644 index 0000000..2634f14 --- /dev/null +++ b/deps/jemalloc/include/jemalloc/internal/tcache_inlines.h @@ -0,0 +1,193 @@ +#ifndef JEMALLOC_INTERNAL_TCACHE_INLINES_H +#define JEMALLOC_INTERNAL_TCACHE_INLINES_H + +#include "jemalloc/internal/bin.h" +#include "jemalloc/internal/jemalloc_internal_types.h" +#include "jemalloc/internal/san.h" +#include "jemalloc/internal/sc.h" +#include "jemalloc/internal/sz.h" +#include "jemalloc/internal/util.h" + +static inline bool +tcache_enabled_get(tsd_t *tsd) { + return tsd_tcache_enabled_get(tsd); +} + +static inline void +tcache_enabled_set(tsd_t *tsd, bool enabled) { + bool was_enabled = tsd_tcache_enabled_get(tsd); + + if (!was_enabled && enabled) { + tsd_tcache_data_init(tsd); + } else if (was_enabled && !enabled) { + tcache_cleanup(tsd); + } + /* Commit the state last. Above calls check current state. */ + tsd_tcache_enabled_set(tsd, enabled); + tsd_slow_update(tsd); +} + +JEMALLOC_ALWAYS_INLINE bool +tcache_small_bin_disabled(szind_t ind, cache_bin_t *bin) { + assert(ind < SC_NBINS); + bool ret = (cache_bin_info_ncached_max(&tcache_bin_info[ind]) == 0); + if (ret && bin != NULL) { + /* small size class but cache bin disabled. */ + assert(ind >= nhbins); + assert((uintptr_t)(*bin->stack_head) == + cache_bin_preceding_junk); + } + + return ret; +} + +JEMALLOC_ALWAYS_INLINE void * +tcache_alloc_small(tsd_t *tsd, arena_t *arena, tcache_t *tcache, + size_t size, szind_t binind, bool zero, bool slow_path) { + void *ret; + bool tcache_success; + + assert(binind < SC_NBINS); + cache_bin_t *bin = &tcache->bins[binind]; + ret = cache_bin_alloc(bin, &tcache_success); + assert(tcache_success == (ret != NULL)); + if (unlikely(!tcache_success)) { + bool tcache_hard_success; + arena = arena_choose(tsd, arena); + if (unlikely(arena == NULL)) { + return NULL; + } + if (unlikely(tcache_small_bin_disabled(binind, bin))) { + /* stats and zero are handled directly by the arena. */ + return arena_malloc_hard(tsd_tsdn(tsd), arena, size, + binind, zero); + } + tcache_bin_flush_stashed(tsd, tcache, bin, binind, + /* is_small */ true); + + ret = tcache_alloc_small_hard(tsd_tsdn(tsd), arena, tcache, + bin, binind, &tcache_hard_success); + if (tcache_hard_success == false) { + return NULL; + } + } + + assert(ret); + if (unlikely(zero)) { + size_t usize = sz_index2size(binind); + assert(tcache_salloc(tsd_tsdn(tsd), ret) == usize); + memset(ret, 0, usize); + } + if (config_stats) { + bin->tstats.nrequests++; + } + return ret; +} + +JEMALLOC_ALWAYS_INLINE void * +tcache_alloc_large(tsd_t *tsd, arena_t *arena, tcache_t *tcache, size_t size, + szind_t binind, bool zero, bool slow_path) { + void *ret; + bool tcache_success; + + assert(binind >= SC_NBINS && binind < nhbins); + cache_bin_t *bin = &tcache->bins[binind]; + ret = cache_bin_alloc(bin, &tcache_success); + assert(tcache_success == (ret != NULL)); + if (unlikely(!tcache_success)) { + /* + * Only allocate one large object at a time, because it's quite + * expensive to create one and not use it. + */ + arena = arena_choose(tsd, arena); + if (unlikely(arena == NULL)) { + return NULL; + } + tcache_bin_flush_stashed(tsd, tcache, bin, binind, + /* is_small */ false); + + ret = large_malloc(tsd_tsdn(tsd), arena, sz_s2u(size), zero); + if (ret == NULL) { + return NULL; + } + } else { + if (unlikely(zero)) { + size_t usize = sz_index2size(binind); + assert(usize <= tcache_maxclass); + memset(ret, 0, usize); + } + + if (config_stats) { + bin->tstats.nrequests++; + } + } + + return ret; +} + +JEMALLOC_ALWAYS_INLINE void +tcache_dalloc_small(tsd_t *tsd, tcache_t *tcache, void *ptr, szind_t binind, + bool slow_path) { + assert(tcache_salloc(tsd_tsdn(tsd), ptr) <= SC_SMALL_MAXCLASS); + + cache_bin_t *bin = &tcache->bins[binind]; + /* + * Not marking the branch unlikely because this is past free_fastpath() + * (which handles the most common cases), i.e. at this point it's often + * uncommon cases. + */ + if (cache_bin_nonfast_aligned(ptr)) { + /* Junk unconditionally, even if bin is full. */ + san_junk_ptr(ptr, sz_index2size(binind)); + if (cache_bin_stash(bin, ptr)) { + return; + } + assert(cache_bin_full(bin)); + /* Bin full; fall through into the flush branch. */ + } + + if (unlikely(!cache_bin_dalloc_easy(bin, ptr))) { + if (unlikely(tcache_small_bin_disabled(binind, bin))) { + arena_dalloc_small(tsd_tsdn(tsd), ptr); + return; + } + cache_bin_sz_t max = cache_bin_info_ncached_max( + &tcache_bin_info[binind]); + unsigned remain = max >> opt_lg_tcache_flush_small_div; + tcache_bin_flush_small(tsd, tcache, bin, binind, remain); + bool ret = cache_bin_dalloc_easy(bin, ptr); + assert(ret); + } +} + +JEMALLOC_ALWAYS_INLINE void +tcache_dalloc_large(tsd_t *tsd, tcache_t *tcache, void *ptr, szind_t binind, + bool slow_path) { + + assert(tcache_salloc(tsd_tsdn(tsd), ptr) + > SC_SMALL_MAXCLASS); + assert(tcache_salloc(tsd_tsdn(tsd), ptr) <= tcache_maxclass); + + cache_bin_t *bin = &tcache->bins[binind]; + if (unlikely(!cache_bin_dalloc_easy(bin, ptr))) { + unsigned remain = cache_bin_info_ncached_max( + &tcache_bin_info[binind]) >> opt_lg_tcache_flush_large_div; + tcache_bin_flush_large(tsd, tcache, bin, binind, remain); + bool ret = cache_bin_dalloc_easy(bin, ptr); + assert(ret); + } +} + +JEMALLOC_ALWAYS_INLINE tcache_t * +tcaches_get(tsd_t *tsd, unsigned ind) { + tcaches_t *elm = &tcaches[ind]; + if (unlikely(elm->tcache == NULL)) { + malloc_printf("<jemalloc>: invalid tcache id (%u).\n", ind); + abort(); + } else if (unlikely(elm->tcache == TCACHES_ELM_NEED_REINIT)) { + elm->tcache = tcache_create_explicit(tsd); + } + return elm->tcache; +} + +#endif /* JEMALLOC_INTERNAL_TCACHE_INLINES_H */ |