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Diffstat (limited to 'memory/build/jemalloc_config.cpp')
| -rw-r--r-- | memory/build/jemalloc_config.cpp | 154 |
1 files changed, 0 insertions, 154 deletions
diff --git a/memory/build/jemalloc_config.cpp b/memory/build/jemalloc_config.cpp index 441fd8a2b..0b734d804 100644 --- a/memory/build/jemalloc_config.cpp +++ b/memory/build/jemalloc_config.cpp @@ -2,161 +2,7 @@ * 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/. */ -#ifdef MOZ_JEMALLOC4 - -#define MOZ_JEMALLOC_IMPL - -/* mozmemory_wrap.h needs to be included before MFBT headers */ -#include "mozmemory_wrap.h" -#include <mozilla/Assertions.h> -#include "mozilla/Types.h" - -#if defined(MOZ_SYSTEM_JEMALLOC) -#include MALLOC_H -#else -#define DLLEXPORT -#include "jemalloc/jemalloc.h" -#endif - -#ifdef XP_WIN -#include <windows.h> -#endif -#ifdef XP_DARWIN -#include <sys/mman.h> -#endif - -/* Override some jemalloc defaults */ -#ifdef DEBUG -#define MOZ_MALLOC_BUILD_OPTIONS ",junk:true" -#else -#define MOZ_MALLOC_BUILD_OPTIONS ",junk:free" -#endif - -#define MOZ_MALLOC_OPTIONS "narenas:1,tcache:false" -MFBT_DATA const char* je_(malloc_conf) = - MOZ_MALLOC_OPTIONS MOZ_MALLOC_BUILD_OPTIONS; - -#ifdef ANDROID -#include <android/log.h> - -static void -_je_malloc_message(void* cbopaque, const char* s) -{ - __android_log_print(ANDROID_LOG_INFO, "GeckoJemalloc", "%s", s); -} - -void (*je_(malloc_message))(void*, const char* s) = _je_malloc_message; -#endif - -/* Jemalloc supports hooks that are called on chunk - * allocate/deallocate/commit/decommit/purge/etc. - * - * We currently only hook commit, decommit and purge. We do this to tweak - * the way chunks are handled so that RSS stays lower than it normally - * would with the default jemalloc uses. - * This somewhat matches the behavior of mozjemalloc, except it doesn't - * rely on a double purge on mac, instead purging directly. (Yes, this - * means we can get rid of jemalloc_purge_freed_pages at some point) - * - * The default for jemalloc is to do the following: - * - commit, decommit: nothing - * - purge: MEM_RESET on Windows, MADV_FREE on Mac/BSD, MADV_DONTNEED on Linux - * - * The hooks we setup do the following: - * on Windows: - * - commit: MEM_COMMIT - * - decommit: MEM_DECOMMIT - * on Mac: - * - purge: mmap new anonymous memory on top of the chunk - * - * We only set the above hooks, others are left with the default. - */ -#if defined(XP_WIN) || defined(XP_DARWIN) -class JemallocInit { -public: - JemallocInit() - { - chunk_hooks_t hooks; - size_t hooks_len; - unsigned narenas; - size_t mib[3]; - size_t size; - - size = sizeof(narenas); - je_(mallctl)("arenas.narenas", &narenas, &size, nullptr, 0); - - size = sizeof(mib) / sizeof(mib[0]); - je_(mallctlnametomib)("arena.0.chunk_hooks", mib, &size); - - /* Set the hooks on all the existing arenas. */ - for (unsigned arena = 0; arena < narenas; arena++) { - mib[1] = arena; - hooks_len = sizeof(hooks); - je_(mallctlbymib)(mib, size, &hooks, &hooks_len, nullptr, 0); - -#ifdef XP_WIN - hooks.commit = CommitHook; - hooks.decommit = DecommitHook; -#endif -#ifdef XP_DARWIN - hooks.purge = PurgeHook; -#endif - - je_(mallctlbymib)(mib, size, nullptr, nullptr, &hooks, hooks_len); - } - } - -private: -#ifdef XP_WIN - static bool - CommitHook(void* chunk, size_t size, size_t offset, size_t length, - unsigned arena_ind) - { - void* addr = reinterpret_cast<void*>( - reinterpret_cast<uintptr_t>(chunk) + static_cast<uintptr_t>(offset)); - - if (!VirtualAlloc(addr, length, MEM_COMMIT, PAGE_READWRITE)) - return true; - - return false; - } - - static bool - DecommitHook(void* chunk, size_t size, size_t offset, size_t length, - unsigned arena_ind) - { - void* addr = reinterpret_cast<void*>( - reinterpret_cast<uintptr_t>(chunk) + static_cast<uintptr_t>(offset)); - - if (!VirtualFree(addr, length, MEM_DECOMMIT)) - MOZ_CRASH(); - - return false; - } -#endif - -#ifdef XP_DARWIN - static bool - PurgeHook(void* chunk, size_t size, size_t offset, size_t length, - unsigned arena_ind) - { - void* addr = reinterpret_cast<void*>( - reinterpret_cast<uintptr_t>(chunk) + static_cast<uintptr_t>(offset)); - - void* new_addr = mmap(addr, length, PROT_READ | PROT_WRITE, - MAP_FIXED | MAP_PRIVATE | MAP_ANON, -1, 0); - return (new_addr != addr); - } -#endif -}; - -/* For the static constructor from the class above */ -JemallocInit gJemallocInit; -#endif - -#else #include <mozilla/Assertions.h> -#endif /* MOZ_JEMALLOC4 */ /* Provide an abort function for use in jemalloc code */ extern "C" void moz_abort() { |