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-rw-r--r--include/jemalloc/internal/jemalloc_internal_inlines_a.h168
1 files changed, 168 insertions, 0 deletions
diff --git a/include/jemalloc/internal/jemalloc_internal_inlines_a.h b/include/jemalloc/internal/jemalloc_internal_inlines_a.h
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+++ b/include/jemalloc/internal/jemalloc_internal_inlines_a.h
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+#ifndef JEMALLOC_INTERNAL_INLINES_A_H
+#define JEMALLOC_INTERNAL_INLINES_A_H
+
+#include "jemalloc/internal/atomic.h"
+#include "jemalloc/internal/bit_util.h"
+#include "jemalloc/internal/jemalloc_internal_types.h"
+#include "jemalloc/internal/size_classes.h"
+#include "jemalloc/internal/ticker.h"
+
+JEMALLOC_ALWAYS_INLINE malloc_cpuid_t
+malloc_getcpu(void) {
+ assert(have_percpu_arena);
+#if defined(JEMALLOC_HAVE_SCHED_GETCPU)
+ return (malloc_cpuid_t)sched_getcpu();
+#else
+ not_reached();
+ return -1;
+#endif
+}
+
+/* Return the chosen arena index based on current cpu. */
+JEMALLOC_ALWAYS_INLINE unsigned
+percpu_arena_choose(void) {
+ assert(have_percpu_arena && PERCPU_ARENA_ENABLED(opt_percpu_arena));
+
+ malloc_cpuid_t cpuid = malloc_getcpu();
+ assert(cpuid >= 0);
+
+ unsigned arena_ind;
+ if ((opt_percpu_arena == percpu_arena) || ((unsigned)cpuid < ncpus /
+ 2)) {
+ arena_ind = cpuid;
+ } else {
+ assert(opt_percpu_arena == per_phycpu_arena);
+ /* Hyper threads on the same physical CPU share arena. */
+ arena_ind = cpuid - ncpus / 2;
+ }
+
+ return arena_ind;
+}
+
+/* Return the limit of percpu auto arena range, i.e. arenas[0...ind_limit). */
+JEMALLOC_ALWAYS_INLINE unsigned
+percpu_arena_ind_limit(percpu_arena_mode_t mode) {
+ assert(have_percpu_arena && PERCPU_ARENA_ENABLED(mode));
+ if (mode == per_phycpu_arena && ncpus > 1) {
+ if (ncpus % 2) {
+ /* This likely means a misconfig. */
+ return ncpus / 2 + 1;
+ }
+ return ncpus / 2;
+ } else {
+ return ncpus;
+ }
+}
+
+static 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);
+}
+
+static inline arena_t *
+arena_get(tsdn_t *tsdn, unsigned ind, bool init_if_missing) {
+ arena_t *ret;
+
+ assert(ind < MALLOCX_ARENA_LIMIT);
+
+ ret = (arena_t *)atomic_load_p(&arenas[ind], ATOMIC_ACQUIRE);
+ if (unlikely(ret == NULL)) {
+ if (init_if_missing) {
+ ret = arena_init(tsdn, ind,
+ (extent_hooks_t *)&extent_hooks_default);
+ }
+ }
+ return ret;
+}
+
+static inline ticker_t *
+decay_ticker_get(tsd_t *tsd, unsigned ind) {
+ arena_tdata_t *tdata;
+
+ tdata = arena_tdata_get(tsd, ind, true);
+ if (unlikely(tdata == NULL)) {
+ return NULL;
+ }
+ return &tdata->decay_ticker;
+}
+
+JEMALLOC_ALWAYS_INLINE tcache_bin_t *
+tcache_small_bin_get(tcache_t *tcache, szind_t binind) {
+ assert(binind < NBINS);
+ return &tcache->tbins_small[binind];
+}
+
+JEMALLOC_ALWAYS_INLINE tcache_bin_t *
+tcache_large_bin_get(tcache_t *tcache, szind_t binind) {
+ assert(binind >= NBINS &&binind < nhbins);
+ return &tcache->tbins_large[binind - NBINS];
+}
+
+JEMALLOC_ALWAYS_INLINE bool
+tcache_available(tsd_t *tsd) {
+ /*
+ * Thread specific auto tcache might be unavailable if: 1) during tcache
+ * initialization, or 2) disabled through thread.tcache.enabled mallctl
+ * or config options. This check covers all cases.
+ */
+ if (likely(tsd_tcache_enabled_get(tsd))) {
+ /* Associated arena == NULL implies tcache init in progress. */
+ assert(tsd_tcachep_get(tsd)->arena == NULL ||
+ tcache_small_bin_get(tsd_tcachep_get(tsd), 0)->avail !=
+ NULL);
+ return true;
+ }
+
+ return false;
+}
+
+JEMALLOC_ALWAYS_INLINE tcache_t *
+tcache_get(tsd_t *tsd) {
+ if (!tcache_available(tsd)) {
+ return NULL;
+ }
+
+ return tsd_tcachep_get(tsd);
+}
+
+static inline void
+pre_reentrancy(tsd_t *tsd) {
+ bool fast = tsd_fast(tsd);
+ ++*tsd_reentrancy_levelp_get(tsd);
+ if (fast) {
+ /* Prepare slow path for reentrancy. */
+ tsd_slow_update(tsd);
+ assert(tsd->state == tsd_state_nominal_slow);
+ }
+}
+
+static inline void
+post_reentrancy(tsd_t *tsd) {
+ int8_t *reentrancy_level = tsd_reentrancy_levelp_get(tsd);
+ assert(*reentrancy_level > 0);
+ if (--*reentrancy_level == 0) {
+ tsd_slow_update(tsd);
+ }
+}
+
+#endif /* JEMALLOC_INTERNAL_INLINES_A_H */