8580c65f81
The added hooks hooks.prof_sample and hooks.prof_sample_free are intended to allow advanced users to track additional information, to enable new ways of profiling on top of the jemalloc heap profile and sample features. The sample hook is invoked after the allocation and backtracing, and forwards the both the allocation and backtrace to the user hook; the sample_free hook happens before the actual deallocation, and forwards only the ptr and usz to the hook.
104 lines
3.6 KiB
C
104 lines
3.6 KiB
C
#ifndef JEMALLOC_INTERNAL_PROF_EXTERNS_H
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#define JEMALLOC_INTERNAL_PROF_EXTERNS_H
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#include "jemalloc/internal/mutex.h"
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#include "jemalloc/internal/prof_hook.h"
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extern bool opt_prof;
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extern bool opt_prof_active;
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extern bool opt_prof_thread_active_init;
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extern unsigned opt_prof_bt_max;
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extern size_t opt_lg_prof_sample; /* Mean bytes between samples. */
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extern ssize_t opt_lg_prof_interval; /* lg(prof_interval). */
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extern bool opt_prof_gdump; /* High-water memory dumping. */
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extern bool opt_prof_final; /* Final profile dumping. */
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extern bool opt_prof_leak; /* Dump leak summary at exit. */
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extern bool opt_prof_leak_error; /* Exit with error code if memory leaked */
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extern bool opt_prof_accum; /* Report cumulative bytes. */
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extern bool opt_prof_log; /* Turn logging on at boot. */
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extern char opt_prof_prefix[
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/* Minimize memory bloat for non-prof builds. */
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#ifdef JEMALLOC_PROF
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PATH_MAX +
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#endif
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1];
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extern bool opt_prof_unbias;
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/* For recording recent allocations */
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extern ssize_t opt_prof_recent_alloc_max;
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/* Whether to use thread name provided by the system or by mallctl. */
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extern bool opt_prof_sys_thread_name;
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/* Whether to record per size class counts and request size totals. */
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extern bool opt_prof_stats;
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/* Accessed via prof_active_[gs]et{_unlocked,}(). */
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extern bool prof_active_state;
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/* Accessed via prof_gdump_[gs]et{_unlocked,}(). */
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extern bool prof_gdump_val;
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/* Profile dump interval, measured in bytes allocated. */
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extern uint64_t prof_interval;
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/*
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* Initialized as opt_lg_prof_sample, and potentially modified during profiling
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* resets.
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*/
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extern size_t lg_prof_sample;
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extern bool prof_booted;
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void prof_backtrace_hook_set(prof_backtrace_hook_t hook);
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prof_backtrace_hook_t prof_backtrace_hook_get();
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void prof_dump_hook_set(prof_dump_hook_t hook);
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prof_dump_hook_t prof_dump_hook_get();
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void prof_sample_hook_set(prof_sample_hook_t hook);
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prof_sample_hook_t prof_sample_hook_get();
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void prof_sample_free_hook_set(prof_sample_free_hook_t hook);
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prof_sample_free_hook_t prof_sample_free_hook_get();
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/* Functions only accessed in prof_inlines.h */
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prof_tdata_t *prof_tdata_init(tsd_t *tsd);
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prof_tdata_t *prof_tdata_reinit(tsd_t *tsd, prof_tdata_t *tdata);
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void prof_alloc_rollback(tsd_t *tsd, prof_tctx_t *tctx);
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void prof_malloc_sample_object(tsd_t *tsd, const void *ptr, size_t size,
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size_t usize, prof_tctx_t *tctx);
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void prof_free_sampled_object(tsd_t *tsd, const void *ptr, size_t usize,
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prof_info_t *prof_info);
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prof_tctx_t *prof_tctx_create(tsd_t *tsd);
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void prof_idump(tsdn_t *tsdn);
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bool prof_mdump(tsd_t *tsd, const char *filename);
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void prof_gdump(tsdn_t *tsdn);
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void prof_tdata_cleanup(tsd_t *tsd);
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bool prof_active_get(tsdn_t *tsdn);
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bool prof_active_set(tsdn_t *tsdn, bool active);
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const char *prof_thread_name_get(tsd_t *tsd);
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int prof_thread_name_set(tsd_t *tsd, const char *thread_name);
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bool prof_thread_active_get(tsd_t *tsd);
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bool prof_thread_active_set(tsd_t *tsd, bool active);
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bool prof_thread_active_init_get(tsdn_t *tsdn);
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bool prof_thread_active_init_set(tsdn_t *tsdn, bool active_init);
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bool prof_gdump_get(tsdn_t *tsdn);
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bool prof_gdump_set(tsdn_t *tsdn, bool active);
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void prof_boot0(void);
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void prof_boot1(void);
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bool prof_boot2(tsd_t *tsd, base_t *base);
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void prof_prefork0(tsdn_t *tsdn);
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void prof_prefork1(tsdn_t *tsdn);
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void prof_postfork_parent(tsdn_t *tsdn);
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void prof_postfork_child(tsdn_t *tsdn);
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/* Only accessed by thread event. */
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uint64_t prof_sample_new_event_wait(tsd_t *tsd);
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uint64_t prof_sample_postponed_event_wait(tsd_t *tsd);
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void prof_sample_event_handler(tsd_t *tsd, uint64_t elapsed);
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#endif /* JEMALLOC_INTERNAL_PROF_EXTERNS_H */
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