diff options
Diffstat (limited to 'extra/jemalloc/src/zone.c')
-rw-r--r-- | extra/jemalloc/src/zone.c | 258 |
1 files changed, 0 insertions, 258 deletions
diff --git a/extra/jemalloc/src/zone.c b/extra/jemalloc/src/zone.c deleted file mode 100644 index c62c183f65e..00000000000 --- a/extra/jemalloc/src/zone.c +++ /dev/null @@ -1,258 +0,0 @@ -#include "jemalloc/internal/jemalloc_internal.h" -#ifndef JEMALLOC_ZONE -# error "This source file is for zones on Darwin (OS X)." -#endif - -/* - * The malloc_default_purgeable_zone function is only available on >= 10.6. - * We need to check whether it is present at runtime, thus the weak_import. - */ -extern malloc_zone_t *malloc_default_purgeable_zone(void) -JEMALLOC_ATTR(weak_import); - -/******************************************************************************/ -/* Data. */ - -static malloc_zone_t zone; -static struct malloc_introspection_t zone_introspect; - -/******************************************************************************/ -/* Function prototypes for non-inline static functions. */ - -static size_t zone_size(malloc_zone_t *zone, void *ptr); -static void *zone_malloc(malloc_zone_t *zone, size_t size); -static void *zone_calloc(malloc_zone_t *zone, size_t num, size_t size); -static void *zone_valloc(malloc_zone_t *zone, size_t size); -static void zone_free(malloc_zone_t *zone, void *ptr); -static void *zone_realloc(malloc_zone_t *zone, void *ptr, size_t size); -#if (JEMALLOC_ZONE_VERSION >= 5) -static void *zone_memalign(malloc_zone_t *zone, size_t alignment, -#endif -#if (JEMALLOC_ZONE_VERSION >= 6) - size_t size); -static void zone_free_definite_size(malloc_zone_t *zone, void *ptr, - size_t size); -#endif -static void *zone_destroy(malloc_zone_t *zone); -static size_t zone_good_size(malloc_zone_t *zone, size_t size); -static void zone_force_lock(malloc_zone_t *zone); -static void zone_force_unlock(malloc_zone_t *zone); - -/******************************************************************************/ -/* - * Functions. - */ - -static size_t -zone_size(malloc_zone_t *zone, void *ptr) -{ - - /* - * There appear to be places within Darwin (such as setenv(3)) that - * cause calls to this function with pointers that *no* zone owns. If - * we knew that all pointers were owned by *some* zone, we could split - * our zone into two parts, and use one as the default allocator and - * the other as the default deallocator/reallocator. Since that will - * not work in practice, we must check all pointers to assure that they - * reside within a mapped chunk before determining size. - */ - return (ivsalloc(ptr, config_prof)); -} - -static void * -zone_malloc(malloc_zone_t *zone, size_t size) -{ - - return (je_malloc(size)); -} - -static void * -zone_calloc(malloc_zone_t *zone, size_t num, size_t size) -{ - - return (je_calloc(num, size)); -} - -static void * -zone_valloc(malloc_zone_t *zone, size_t size) -{ - void *ret = NULL; /* Assignment avoids useless compiler warning. */ - - je_posix_memalign(&ret, PAGE, size); - - return (ret); -} - -static void -zone_free(malloc_zone_t *zone, void *ptr) -{ - - if (ivsalloc(ptr, config_prof) != 0) { - je_free(ptr); - return; - } - - free(ptr); -} - -static void * -zone_realloc(malloc_zone_t *zone, void *ptr, size_t size) -{ - - if (ivsalloc(ptr, config_prof) != 0) - return (je_realloc(ptr, size)); - - return (realloc(ptr, size)); -} - -#if (JEMALLOC_ZONE_VERSION >= 5) -static void * -zone_memalign(malloc_zone_t *zone, size_t alignment, size_t size) -{ - void *ret = NULL; /* Assignment avoids useless compiler warning. */ - - je_posix_memalign(&ret, alignment, size); - - return (ret); -} -#endif - -#if (JEMALLOC_ZONE_VERSION >= 6) -static void -zone_free_definite_size(malloc_zone_t *zone, void *ptr, size_t size) -{ - - if (ivsalloc(ptr, config_prof) != 0) { - assert(ivsalloc(ptr, config_prof) == size); - je_free(ptr); - return; - } - - free(ptr); -} -#endif - -static void * -zone_destroy(malloc_zone_t *zone) -{ - - /* This function should never be called. */ - assert(false); - return (NULL); -} - -static size_t -zone_good_size(malloc_zone_t *zone, size_t size) -{ - - if (size == 0) - size = 1; - return (s2u(size)); -} - -static void -zone_force_lock(malloc_zone_t *zone) -{ - - if (isthreaded) - jemalloc_prefork(); -} - -static void -zone_force_unlock(malloc_zone_t *zone) -{ - - if (isthreaded) - jemalloc_postfork_parent(); -} - -JEMALLOC_ATTR(constructor) -void -register_zone(void) -{ - - /* - * If something else replaced the system default zone allocator, don't - * register jemalloc's. - */ - malloc_zone_t *default_zone = malloc_default_zone(); - if (!default_zone->zone_name || - strcmp(default_zone->zone_name, "DefaultMallocZone") != 0) { - return; - } - - zone.size = (void *)zone_size; - zone.malloc = (void *)zone_malloc; - zone.calloc = (void *)zone_calloc; - zone.valloc = (void *)zone_valloc; - zone.free = (void *)zone_free; - zone.realloc = (void *)zone_realloc; - zone.destroy = (void *)zone_destroy; - zone.zone_name = "jemalloc_zone"; - zone.batch_malloc = NULL; - zone.batch_free = NULL; - zone.introspect = &zone_introspect; - zone.version = JEMALLOC_ZONE_VERSION; -#if (JEMALLOC_ZONE_VERSION >= 5) - zone.memalign = zone_memalign; -#endif -#if (JEMALLOC_ZONE_VERSION >= 6) - zone.free_definite_size = zone_free_definite_size; -#endif -#if (JEMALLOC_ZONE_VERSION >= 8) - zone.pressure_relief = NULL; -#endif - - zone_introspect.enumerator = NULL; - zone_introspect.good_size = (void *)zone_good_size; - zone_introspect.check = NULL; - zone_introspect.print = NULL; - zone_introspect.log = NULL; - zone_introspect.force_lock = (void *)zone_force_lock; - zone_introspect.force_unlock = (void *)zone_force_unlock; - zone_introspect.statistics = NULL; -#if (JEMALLOC_ZONE_VERSION >= 6) - zone_introspect.zone_locked = NULL; -#endif -#if (JEMALLOC_ZONE_VERSION >= 7) - zone_introspect.enable_discharge_checking = NULL; - zone_introspect.disable_discharge_checking = NULL; - zone_introspect.discharge = NULL; -#ifdef __BLOCKS__ - zone_introspect.enumerate_discharged_pointers = NULL; -#else - zone_introspect.enumerate_unavailable_without_blocks = NULL; -#endif -#endif - - /* - * The default purgeable zone is created lazily by OSX's libc. It uses - * the default zone when it is created for "small" allocations - * (< 15 KiB), but assumes the default zone is a scalable_zone. This - * obviously fails when the default zone is the jemalloc zone, so - * malloc_default_purgeable_zone is called beforehand so that the - * default purgeable zone is created when the default zone is still - * a scalable_zone. As purgeable zones only exist on >= 10.6, we need - * to check for the existence of malloc_default_purgeable_zone() at - * run time. - */ - if (malloc_default_purgeable_zone != NULL) - malloc_default_purgeable_zone(); - - /* Register the custom zone. At this point it won't be the default. */ - malloc_zone_register(&zone); - - /* - * Unregister and reregister the default zone. On OSX >= 10.6, - * unregistering takes the last registered zone and places it at the - * location of the specified zone. Unregistering the default zone thus - * makes the last registered one the default. On OSX < 10.6, - * unregistering shifts all registered zones. The first registered zone - * then becomes the default. - */ - do { - default_zone = malloc_default_zone(); - malloc_zone_unregister(default_zone); - malloc_zone_register(default_zone); - } while (malloc_default_zone() != &zone); -} |