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server-skynet-source-3rd-je.../include/jemalloc/internal/jemalloc_internal_externs.h

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Header refactoring: Split up jemalloc_internal.h This is a biggy. jemalloc_internal.h has been doing multiple jobs for a while now: - The source of system-wide definitions. - The catch-all include file. - The module header file for jemalloc.c This commit splits up this functionality. The system-wide definitions responsibility has moved to jemalloc_preamble.h. The catch-all include file is now jemalloc_internal_includes.h. The module headers for jemalloc.c are now in jemalloc_internal_[externs|inlines|types].h, just as they are for the other modules.
2017-04-11 09:17:55 +08:00
#ifndef JEMALLOC_INTERNAL_EXTERNS_H
#define JEMALLOC_INTERNAL_EXTERNS_H
Header refactoring: move atomic.h out of the catch-all
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#include "jemalloc/internal/atomic.h"
Header refactoring: tsd - cleanup and dependency breaking. This removes the tsd macros (which are used only for tsd_t in real builds). We break up the circular dependencies involving tsd. We also move all tsd access through getters and setters. This allows us to assert that we only touch data when tsd is in a valid state. We simplify the usages of the x macro trick, removing all the customizability (get/set, init, cleanup), moving the lifetime logic to tsd_init and tsd_cleanup. This lets us make initialization order independent of order within tsd_t.
2017-04-27 09:37:44 +08:00
#include "jemalloc/internal/tsd_types.h"
High Resolution Timestamps for Profiling
2020-06-02 21:42:44 +08:00
#include "jemalloc/internal/nstime.h"
Header refactoring: move atomic.h out of the catch-all
2017-04-11 10:04:40 +08:00
Bundle 3 branches on fast path into tsd_state. Added tsd_state_nominal_slow, which on fast path malloc() incorporates tcache_enabled check, and on fast path free() bundles both malloc_slow and tcache_enabled branches.
2017-04-12 14:13:45 +08:00
/* TSD checks this to set thread local slow state accordingly. */
Added opt_abort_conf: abort on invalid config options.
2017-05-26 06:30:11 +08:00
extern bool malloc_slow;
Bundle 3 branches on fast path into tsd_state. Added tsd_state_nominal_slow, which on fast path malloc() incorporates tcache_enabled check, and on fast path free() bundles both malloc_slow and tcache_enabled branches.
2017-04-12 14:13:45 +08:00
/* Run-time options. */
Added opt_abort_conf: abort on invalid config options.
2017-05-26 06:30:11 +08:00
extern bool opt_abort;
extern bool opt_abort_conf;
Add runtime detection for MADV_DONTNEED zeroes pages (mostly for qemu) qemu does not support this, yet [1], and you can get very tricky assert if you will run program with jemalloc in use under qemu: <jemalloc>: ../contrib/jemalloc/src/extent.c:1195: Failed assertion: "p[i] == 0" [1]: https://patchwork.kernel.org/patch/10576637/ Here is a simple example that shows the problem [2]: // Gist to check possible issues with MADV_DONTNEED // For example it does not supported by qemu user // There is a patch for this [1], but it hasn't been applied. // [1]: https://lists.gnu.org/archive/html/qemu-devel/2018-08/msg05422.html #include <sys/mman.h> #include <stdio.h> #include <stddef.h> #include <assert.h> #include <string.h> int main(int argc, char **argv) { void *addr = mmap(NULL, 1<<16, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0); if (addr == MAP_FAILED) { perror("mmap"); return 1; } memset(addr, 'A', 1<<16); if (!madvise(addr, 1<<16, MADV_DONTNEED)) { puts("MADV_DONTNEED does not return error. Check memory."); for (int i = 0; i < 1<<16; ++i) { assert(((unsigned char *)addr)[i] == 0); } } else { perror("madvise"); } if (munmap(addr, 1<<16)) { perror("munmap"); return 1; } return 0; } ### unpatched qemu $ qemu-x86_64-static /tmp/test-MADV_DONTNEED MADV_DONTNEED does not return error. Check memory. test-MADV_DONTNEED: /tmp/test-MADV_DONTNEED.c:19: main: Assertion `((unsigned char *)addr)[i] == 0' failed. qemu: uncaught target signal 6 (Aborted) - core dumped Aborted (core dumped) ### patched qemu (by returning ENOSYS error) $ qemu-x86_64 /tmp/test-MADV_DONTNEED madvise: Success ### patch for qemu to return ENOSYS diff --git a/linux-user/syscall.c b/linux-user/syscall.c index 897d20c076..5540792e0e 100644 --- a/linux-user/syscall.c +++ b/linux-user/syscall.c @@ -11775,7 +11775,7 @@ static abi_long do_syscall1(void *cpu_env, int num, abi_long arg1, turns private file-backed mappings into anonymous mappings. This will break MADV_DONTNEED. This is a hint, so ignoring and returning success is ok. */ - return 0; + return ENOSYS; #endif #ifdef TARGET_NR_fcntl64 case TARGET_NR_fcntl64: [2]: https://gist.github.com/azat/12ba2c825b710653ece34dba7f926ece v2: - review fixes - add opt_dont_trust_madvise v3: - review fixes - rename opt_dont_trust_madvise to opt_trust_madvise
2020-12-19 03:23:35 +08:00
extern bool opt_trust_madvise;
Add confirm_conf option If the confirm_conf option is set, when the program starts, each of the four malloc_conf strings will be printed, and each option will be printed when being set.
2019-05-01 04:54:00 +08:00
extern bool opt_confirm_conf;
HPA: Tie components into a PAI implementation.
2020-08-15 04:36:41 +08:00
extern bool opt_hpa;
HPA: Make slab sizes and maxes configurable. This allows easy experimentation with them as tuning parameters.
2020-09-05 06:22:47 +08:00
extern size_t opt_hpa_slab_max_alloc;
PA: Use an SEC in fron of the HPA shard.
2020-10-17 04:14:59 +08:00
extern size_t opt_hpa_sec_max_alloc;
extern size_t opt_hpa_sec_max_bytes;
extern size_t opt_hpa_sec_nshards;
Added opt_abort_conf: abort on invalid config options.
2017-05-26 06:30:11 +08:00
extern const char *opt_junk;
extern bool opt_junk_alloc;
extern bool opt_junk_free;
Move junking out of arena/tcache code. This is debug only and we keep it off the fast path. Moving it here simplifies the internal logic. This never tries to junk on regions that were shrunk via xallocx. I think this is fine for two reasons: - The shrunk-with-xallocx case is rare. - We don't always do that anyway before this diff (it depends on the opt settings and extent hooks in effect).
2020-02-29 03:37:39 +08:00
extern void (*junk_free_callback)(void *ptr, size_t size);
extern void (*junk_alloc_callback)(void *ptr, size_t size);
Added opt_abort_conf: abort on invalid config options.
2017-05-26 06:30:11 +08:00
extern bool opt_utrace;
extern bool opt_xmalloc;
extern bool opt_zero;
extern unsigned opt_narenas;
Realloc: Make behavior of realloc(ptr, 0) configurable.
2019-09-24 08:56:19 +08:00
extern zero_realloc_action_t opt_zero_realloc_action;
extern const char *zero_realloc_mode_names[];
Add stats counters for number of zero reallocs
2019-10-27 02:04:46 +08:00
extern atomic_zu_t zero_realloc_count;
Header refactoring: Split up jemalloc_internal.h This is a biggy. jemalloc_internal.h has been doing multiple jobs for a while now: - The source of system-wide definitions. - The catch-all include file. - The module header file for jemalloc.c This commit splits up this functionality. The system-wide definitions responsibility has moved to jemalloc_preamble.h. The catch-all include file is now jemalloc_internal_includes.h. The module headers for jemalloc.c are now in jemalloc_internal_[externs|inlines|types].h, just as they are for the other modules.
2017-04-11 09:17:55 +08:00
/* Number of CPUs. */
Added opt_abort_conf: abort on invalid config options.
2017-05-26 06:30:11 +08:00
extern unsigned ncpus;
Header refactoring: Split up jemalloc_internal.h This is a biggy. jemalloc_internal.h has been doing multiple jobs for a while now: - The source of system-wide definitions. - The catch-all include file. - The module header file for jemalloc.c This commit splits up this functionality. The system-wide definitions responsibility has moved to jemalloc_preamble.h. The catch-all include file is now jemalloc_internal_includes.h. The module headers for jemalloc.c are now in jemalloc_internal_[externs|inlines|types].h, just as they are for the other modules.
2017-04-11 09:17:55 +08:00
/* Number of arenas used for automatic multiplexing of threads and arenas. */
Added opt_abort_conf: abort on invalid config options.
2017-05-26 06:30:11 +08:00
extern unsigned narenas_auto;
Header refactoring: Split up jemalloc_internal.h This is a biggy. jemalloc_internal.h has been doing multiple jobs for a while now: - The source of system-wide definitions. - The catch-all include file. - The module header file for jemalloc.c This commit splits up this functionality. The system-wide definitions responsibility has moved to jemalloc_preamble.h. The catch-all include file is now jemalloc_internal_includes.h. The module headers for jemalloc.c are now in jemalloc_internal_[externs|inlines|types].h, just as they are for the other modules.
2017-04-11 09:17:55 +08:00
Refactor arena_is_auto.
2018-06-02 06:06:36 +08:00
/* Base index for manual arenas. */
extern unsigned manual_arena_base;
Header refactoring: Split up jemalloc_internal.h This is a biggy. jemalloc_internal.h has been doing multiple jobs for a while now: - The source of system-wide definitions. - The catch-all include file. - The module header file for jemalloc.c This commit splits up this functionality. The system-wide definitions responsibility has moved to jemalloc_preamble.h. The catch-all include file is now jemalloc_internal_includes.h. The module headers for jemalloc.c are now in jemalloc_internal_[externs|inlines|types].h, just as they are for the other modules.
2017-04-11 09:17:55 +08:00
/*
* Arenas that are used to service external requests. Not all elements of the
* arenas array are necessarily used; arenas are created lazily as needed.
*/
extern atomic_p_t arenas[];
void *a0malloc(size_t size);
void a0dalloc(void *ptr);
void *bootstrap_malloc(size_t size);
void *bootstrap_calloc(size_t num, size_t size);
void bootstrap_free(void *ptr);
void arena_set(unsigned ind, arena_t *arena);
unsigned narenas_total_get(void);
arena_t *arena_init(tsdn_t *tsdn, unsigned ind, extent_hooks_t *extent_hooks);
arena_t *arena_choose_hard(tsd_t *tsd, bool internal);
void arena_migrate(tsd_t *tsd, unsigned oldind, unsigned newind);
void iarena_cleanup(tsd_t *tsd);
void arena_cleanup(tsd_t *tsd);
Add batch allocation API
2020-04-24 06:46:45 +08:00
size_t batch_alloc(void **ptrs, size_t num, size_t size, int flags);
Header refactoring: Split up jemalloc_internal.h This is a biggy. jemalloc_internal.h has been doing multiple jobs for a while now: - The source of system-wide definitions. - The catch-all include file. - The module header file for jemalloc.c This commit splits up this functionality. The system-wide definitions responsibility has moved to jemalloc_preamble.h. The catch-all include file is now jemalloc_internal_includes.h. The module headers for jemalloc.c are now in jemalloc_internal_[externs|inlines|types].h, just as they are for the other modules.
2017-04-11 09:17:55 +08:00
void jemalloc_prefork(void);
void jemalloc_postfork_parent(void);
void jemalloc_postfork_child(void);
bool malloc_initialized(void);
remove compare and branch in fast path for c++ operator delete[] Summary: sdallocx is checking a flag that will never be set (at least in the provided C++ destructor implementation). This branch will probably only rarely be mispredicted however it removes two instructions in sdallocx and one at the callsite (to zero out flags).
2019-03-09 03:50:30 +08:00
void je_sdallocx_noflags(void *ptr, size_t size);
Header refactoring: Split up jemalloc_internal.h This is a biggy. jemalloc_internal.h has been doing multiple jobs for a while now: - The source of system-wide definitions. - The catch-all include file. - The module header file for jemalloc.c This commit splits up this functionality. The system-wide definitions responsibility has moved to jemalloc_preamble.h. The catch-all include file is now jemalloc_internal_includes.h. The module headers for jemalloc.c are now in jemalloc_internal_[externs|inlines|types].h, just as they are for the other modules.
2017-04-11 09:17:55 +08:00
#endif /* JEMALLOC_INTERNAL_EXTERNS_H */
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