149 lines
4.1 KiB
C
149 lines
4.1 KiB
C
#ifndef JEMALLOC_INTERNAL_STATS_H
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#define JEMALLOC_INTERNAL_STATS_H
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#include "jemalloc/internal/atomic.h"
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#include "jemalloc/internal/size_classes.h"
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/* The opt.stats_print storage. */
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extern bool opt_stats_print;
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/* Implements je_malloc_stats_print. */
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void stats_print(void (*write_cb)(void *, const char *), void *cbopaque,
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const char *opts);
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/*
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* In those architectures that support 64-bit atomics, we use atomic updates for
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* our 64-bit values. Otherwise, we use a plain uint64_t and synchronize
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* externally.
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*/
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#ifdef JEMALLOC_ATOMIC_U64
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typedef atomic_u64_t arena_stats_u64_t;
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#else
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/* Must hold the arena stats mutex while reading atomically. */
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typedef uint64_t arena_stats_u64_t;
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#endif
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typedef struct tcache_bin_stats_s {
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/*
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* Number of allocation requests that corresponded to the size of this
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* bin.
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*/
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uint64_t nrequests;
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} tcache_bin_stats_t;
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typedef struct malloc_bin_stats_s {
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/*
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* Total number of allocation/deallocation requests served directly by
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* the bin. Note that tcache may allocate an object, then recycle it
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* many times, resulting many increments to nrequests, but only one
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* each to nmalloc and ndalloc.
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*/
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uint64_t nmalloc;
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uint64_t ndalloc;
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/*
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* Number of allocation requests that correspond to the size of this
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* bin. This includes requests served by tcache, though tcache only
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* periodically merges into this counter.
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*/
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uint64_t nrequests;
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/*
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* Current number of regions of this size class, including regions
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* currently cached by tcache.
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*/
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size_t curregs;
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/* Number of tcache fills from this bin. */
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uint64_t nfills;
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/* Number of tcache flushes to this bin. */
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uint64_t nflushes;
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/* Total number of slabs created for this bin's size class. */
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uint64_t nslabs;
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/*
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* Total number of slabs reused by extracting them from the slabs heap
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* for this bin's size class.
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*/
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uint64_t reslabs;
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/* Current number of slabs in this bin. */
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size_t curslabs;
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mutex_prof_data_t mutex_data;
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} malloc_bin_stats_t;
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typedef struct malloc_large_stats_s {
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/*
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* Total number of allocation/deallocation requests served directly by
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* the arena.
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*/
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arena_stats_u64_t nmalloc;
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arena_stats_u64_t ndalloc;
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/*
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* Number of allocation requests that correspond to this size class.
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* This includes requests served by tcache, though tcache only
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* periodically merges into this counter.
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*/
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arena_stats_u64_t nrequests; /* Partially derived. */
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/* Current number of allocations of this size class. */
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size_t curlextents; /* Derived. */
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} malloc_large_stats_t;
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typedef struct decay_stats_s {
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/* Total number of purge sweeps. */
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arena_stats_u64_t npurge;
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/* Total number of madvise calls made. */
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arena_stats_u64_t nmadvise;
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/* Total number of pages purged. */
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arena_stats_u64_t purged;
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} decay_stats_t;
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/*
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* Arena stats. Note that fields marked "derived" are not directly maintained
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* within the arena code; rather their values are derived during stats merge
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* requests.
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*/
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typedef struct arena_stats_s {
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#ifndef JEMALLOC_ATOMIC_U64
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malloc_mutex_t mtx;
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#endif
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/* Number of bytes currently mapped, excluding retained memory. */
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atomic_zu_t mapped; /* Partially derived. */
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/*
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* Number of bytes currently retained as a side effect of munmap() being
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* disabled/bypassed. Retained bytes are technically mapped (though
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* always decommitted or purged), but they are excluded from the mapped
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* statistic (above).
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*/
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atomic_zu_t retained; /* Derived. */
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decay_stats_t decay_dirty;
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decay_stats_t decay_muzzy;
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atomic_zu_t base; /* Derived. */
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atomic_zu_t internal;
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atomic_zu_t resident; /* Derived. */
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atomic_zu_t allocated_large; /* Derived. */
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arena_stats_u64_t nmalloc_large; /* Derived. */
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arena_stats_u64_t ndalloc_large; /* Derived. */
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arena_stats_u64_t nrequests_large; /* Derived. */
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/* Number of bytes cached in tcache associated with this arena. */
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atomic_zu_t tcache_bytes; /* Derived. */
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mutex_prof_data_t mutex_prof_data[num_arena_prof_mutexes];
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/* One element for each large size class. */
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malloc_large_stats_t lstats[NSIZES - NBINS];
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} arena_stats_t;
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#endif /* JEMALLOC_INTERNAL_STATS_H */
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