зеркало из https://github.com/mozilla/gecko-dev.git
145 строки
5.3 KiB
C
145 строки
5.3 KiB
C
/* This Source Code Form is subject to the terms of the Mozilla Public
|
|
* License, v. 2.0. If a copy of the MPL was not distributed with this file,
|
|
* You can obtain one at http://mozilla.org/MPL/2.0/. */
|
|
|
|
/*
|
|
* Helper header to declare all the supported malloc functions.
|
|
* MALLOC_DECL arguments are:
|
|
* - function name
|
|
* - return type
|
|
* - argument types
|
|
*/
|
|
|
|
#ifndef malloc_decls_h
|
|
# define malloc_decls_h
|
|
|
|
# include "mozjemalloc_types.h"
|
|
|
|
# define MALLOC_FUNCS_MALLOC_BASE 1
|
|
# define MALLOC_FUNCS_MALLOC_EXTRA 2
|
|
# define MALLOC_FUNCS_MALLOC (MALLOC_FUNCS_MALLOC_BASE | \
|
|
MALLOC_FUNCS_MALLOC_EXTRA)
|
|
# define MALLOC_FUNCS_JEMALLOC 4
|
|
# define MALLOC_FUNCS_INIT 8
|
|
# define MALLOC_FUNCS_BRIDGE 16
|
|
# define MALLOC_FUNCS_ARENA_BASE 32
|
|
# define MALLOC_FUNCS_ARENA_ALLOC 64
|
|
# define MALLOC_FUNCS_ARENA (MALLOC_FUNCS_ARENA_BASE | \
|
|
MALLOC_FUNCS_ARENA_ALLOC)
|
|
# define MALLOC_FUNCS_ALL (MALLOC_FUNCS_INIT | MALLOC_FUNCS_BRIDGE | \
|
|
MALLOC_FUNCS_MALLOC | MALLOC_FUNCS_JEMALLOC | \
|
|
MALLOC_FUNCS_ARENA)
|
|
|
|
#endif /* malloc_decls_h */
|
|
|
|
#ifndef MALLOC_FUNCS
|
|
# define MALLOC_FUNCS (MALLOC_FUNCS_MALLOC | MALLOC_FUNCS_JEMALLOC | \
|
|
MALLOC_FUNCS_ARENA)
|
|
#endif
|
|
|
|
#ifdef MALLOC_DECL
|
|
# if MALLOC_FUNCS & MALLOC_FUNCS_INIT
|
|
MALLOC_DECL(init, void, const malloc_table_t *)
|
|
# endif
|
|
# if MALLOC_FUNCS & MALLOC_FUNCS_BRIDGE
|
|
MALLOC_DECL(get_bridge, struct ReplaceMallocBridge*)
|
|
# endif
|
|
# if MALLOC_FUNCS & MALLOC_FUNCS_MALLOC_BASE
|
|
MALLOC_DECL(malloc, void *, size_t)
|
|
MALLOC_DECL(calloc, void *, size_t, size_t)
|
|
MALLOC_DECL(realloc, void *, void *, size_t)
|
|
MALLOC_DECL(free, void, void *)
|
|
MALLOC_DECL(memalign, void *, size_t, size_t)
|
|
# endif
|
|
# if MALLOC_FUNCS & MALLOC_FUNCS_MALLOC_EXTRA
|
|
MALLOC_DECL(posix_memalign, int, void **, size_t, size_t)
|
|
MALLOC_DECL(aligned_alloc, void *, size_t, size_t)
|
|
MALLOC_DECL(valloc, void *, size_t)
|
|
MALLOC_DECL(malloc_usable_size, size_t, usable_ptr_t)
|
|
MALLOC_DECL(malloc_good_size, size_t, size_t)
|
|
# endif
|
|
# if MALLOC_FUNCS & MALLOC_FUNCS_JEMALLOC
|
|
MALLOC_DECL(jemalloc_stats, void, jemalloc_stats_t *)
|
|
/*
|
|
* On some operating systems (Mac), we use madvise(MADV_FREE) to hand pages
|
|
* back to the operating system. On Mac, the operating system doesn't take
|
|
* this memory back immediately; instead, the OS takes it back only when the
|
|
* machine is running out of physical memory.
|
|
*
|
|
* This is great from the standpoint of efficiency, but it makes measuring our
|
|
* actual RSS difficult, because pages which we've MADV_FREE'd shouldn't count
|
|
* against our RSS.
|
|
*
|
|
* This function explicitly purges any MADV_FREE'd pages from physical memory,
|
|
* causing our reported RSS match the amount of memory we're actually using.
|
|
*
|
|
* Note that this call is expensive in two ways. First, it may be slow to
|
|
* execute, because it may make a number of slow syscalls to free memory. This
|
|
* function holds the big jemalloc locks, so basically all threads are blocked
|
|
* while this function runs.
|
|
*
|
|
* This function is also expensive in that the next time we go to access a page
|
|
* which we've just explicitly decommitted, the operating system has to attach
|
|
* to it a physical page! If we hadn't run this function, the OS would have
|
|
* less work to do.
|
|
*
|
|
* If MALLOC_DOUBLE_PURGE is not defined, this function does nothing.
|
|
*/
|
|
MALLOC_DECL(jemalloc_purge_freed_pages, void)
|
|
|
|
/*
|
|
* Free all unused dirty pages in all arenas. Calling this function will slow
|
|
* down subsequent allocations so it is recommended to use it only when
|
|
* memory needs to be reclaimed at all costs (see bug 805855). This function
|
|
* provides functionality similar to mallctl("arenas.purge") in jemalloc 3.
|
|
*/
|
|
MALLOC_DECL(jemalloc_free_dirty_pages, void)
|
|
|
|
/*
|
|
* Opt in or out of a thread local arena (bool argument is whether to opt-in
|
|
* (true) or out (false)).
|
|
*/
|
|
MALLOC_DECL(jemalloc_thread_local_arena, void, bool)
|
|
|
|
/*
|
|
* Provide information about any allocation enclosing the given address.
|
|
*/
|
|
MALLOC_DECL(jemalloc_ptr_info, void, const void*, jemalloc_ptr_info_t*)
|
|
# endif
|
|
|
|
# if MALLOC_FUNCS & MALLOC_FUNCS_ARENA_BASE
|
|
/*
|
|
* Creates a separate arena, and returns its id, valid to use with moz_arena_*
|
|
* functions.
|
|
*/
|
|
MALLOC_DECL(moz_create_arena, arena_id_t)
|
|
|
|
/*
|
|
* Dispose of the given arena. Subsequent uses of the arena will fail.
|
|
*/
|
|
MALLOC_DECL(moz_dispose_arena, void, arena_id_t)
|
|
# endif
|
|
|
|
# if MALLOC_FUNCS & MALLOC_FUNCS_ARENA_ALLOC
|
|
/*
|
|
* Same as the functions without the moz_arena_ prefix, but using arenas
|
|
* created with moz_create_arena.
|
|
* The contract, even if not enforced at runtime in some configurations,
|
|
* is that moz_arena_realloc and moz_arena_free will crash if the wrong
|
|
* arena id is given. All functions will crash if the arena id is invalid.
|
|
* Although discouraged, plain realloc and free can still be used on
|
|
* pointers allocated with these functions. Realloc will properly keep
|
|
* new pointers in the same arena as the original.
|
|
*/
|
|
MALLOC_DECL(moz_arena_malloc, void*, arena_id_t, size_t)
|
|
MALLOC_DECL(moz_arena_calloc, void*, arena_id_t, size_t, size_t)
|
|
MALLOC_DECL(moz_arena_realloc, void*, arena_id_t, void*, size_t)
|
|
MALLOC_DECL(moz_arena_free, void, arena_id_t, void*)
|
|
MALLOC_DECL(moz_arena_memalign, void*, arena_id_t, size_t, size_t)
|
|
# endif
|
|
|
|
#endif /* MALLOC_DECL */
|
|
|
|
#undef MALLOC_DECL
|
|
#undef MALLOC_FUNCS
|