From 91ce8b18174dcff3eeba770bd280eb5af0df98ca Mon Sep 17 00:00:00 2001 From: "Matt A. Tobin" Date: Tue, 23 Nov 2021 04:27:32 -0500 Subject: Issue %3005 - Move memory/mfbt/mozglue to system/ as memory, framework, and utils respectively --- system/memory/mozalloc/mozalloc.cpp | 204 ++++++++++++++++++++++++++++++++++++ 1 file changed, 204 insertions(+) create mode 100644 system/memory/mozalloc/mozalloc.cpp (limited to 'system/memory/mozalloc/mozalloc.cpp') diff --git a/system/memory/mozalloc/mozalloc.cpp b/system/memory/mozalloc/mozalloc.cpp new file mode 100644 index 000000000..1ae071ea0 --- /dev/null +++ b/system/memory/mozalloc/mozalloc.cpp @@ -0,0 +1,204 @@ +/* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 4 -*- + * vim: sw=4 ts=4 et : + */ +/* 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/. */ + +#include // for size_t + +// Building with USE_STATIC_LIBS = True sets -MT instead of -MD. -MT sets _MT, +// while -MD sets _MT and _DLL. +#if defined(_MT) && !defined(_DLL) +#define MOZ_STATIC_RUNTIME +#endif + +#if defined(MOZ_MEMORY) && !defined(MOZ_STATIC_RUNTIME) +// mozalloc.cpp is part of the same library as mozmemory, thus MOZ_MEMORY_IMPL +// is needed. +#define MOZ_MEMORY_IMPL +#include "mozmemory_wrap.h" + +// See mozmemory_wrap.h for more details. This file is part of libmozglue, so +// it needs to use _impl suffixes. However, with libmozglue growing, this is +// becoming cumbersome, so we will likely use a malloc.h wrapper of some sort +// and allow the use of the functions without a _impl suffix. +#define MALLOC_DECL(name, return_type, ...) \ + extern "C" MOZ_MEMORY_API return_type name ## _impl(__VA_ARGS__); +#define MALLOC_FUNCS MALLOC_FUNCS_MALLOC +#include "malloc_decls.h" + +extern "C" MOZ_MEMORY_API char *strdup_impl(const char *); +extern "C" MOZ_MEMORY_API char *strndup_impl(const char *, size_t); + +#else +// When jemalloc is disabled, or when building the static runtime variant, +// we need not to use the suffixes. + +#if defined(MALLOC_H) +# include MALLOC_H // for memalign, valloc, malloc_size, malloc_us +#endif // if defined(MALLOC_H) +#include // for malloc, free +#if defined(XP_UNIX) +# include // for valloc on *BSD +#endif //if defined(XP_UNIX) + +#define malloc_impl malloc +#define posix_memalign_impl posix_memalign +#define calloc_impl calloc +#define realloc_impl realloc +#define free_impl free +#define memalign_impl memalign +#define valloc_impl valloc +#define malloc_usable_size_impl malloc_usable_size +#define strdup_impl strdup +#define strndup_impl strndup + +#endif + +#include +#include // for std::bad_alloc +#include + +#include + +#include "mozilla/mozalloc.h" +#include "mozilla/mozalloc_oom.h" // for mozalloc_handle_oom + +#ifdef __GNUC__ +#define LIKELY(x) (__builtin_expect(!!(x), 1)) +#define UNLIKELY(x) (__builtin_expect(!!(x), 0)) +#else +#define LIKELY(x) (x) +#define UNLIKELY(x) (x) +#endif + +void* +moz_xmalloc(size_t size) +{ + void* ptr = malloc_impl(size); + if (UNLIKELY(!ptr && size)) { + mozalloc_handle_oom(size); + return moz_xmalloc(size); + } + return ptr; +} + +void* +moz_xcalloc(size_t nmemb, size_t size) +{ + void* ptr = calloc_impl(nmemb, size); + if (UNLIKELY(!ptr && nmemb && size)) { + mozalloc_handle_oom(size); + return moz_xcalloc(nmemb, size); + } + return ptr; +} + +void* +moz_xrealloc(void* ptr, size_t size) +{ + void* newptr = realloc_impl(ptr, size); + if (UNLIKELY(!newptr && size)) { + mozalloc_handle_oom(size); + return moz_xrealloc(ptr, size); + } + return newptr; +} + +char* +moz_xstrdup(const char* str) +{ + char* dup = strdup_impl(str); + if (UNLIKELY(!dup)) { + mozalloc_handle_oom(0); + return moz_xstrdup(str); + } + return dup; +} + +#if defined(HAVE_STRNDUP) +char* +moz_xstrndup(const char* str, size_t strsize) +{ + char* dup = strndup_impl(str, strsize); + if (UNLIKELY(!dup)) { + mozalloc_handle_oom(strsize); + return moz_xstrndup(str, strsize); + } + return dup; +} +#endif // if defined(HAVE_STRNDUP) + +#if defined(HAVE_POSIX_MEMALIGN) +int +moz_xposix_memalign(void **ptr, size_t alignment, size_t size) +{ + int err = posix_memalign_impl(ptr, alignment, size); + if (UNLIKELY(err && ENOMEM == err)) { + mozalloc_handle_oom(size); + return moz_xposix_memalign(ptr, alignment, size); + } + // else: (0 == err) or (EINVAL == err) + return err; +} +int +moz_posix_memalign(void **ptr, size_t alignment, size_t size) +{ + int code = posix_memalign_impl(ptr, alignment, size); + if (code) + return code; + + return code; + +} +#endif // if defined(HAVE_POSIX_MEMALIGN) + +#if defined(HAVE_MEMALIGN) +void* +moz_xmemalign(size_t boundary, size_t size) +{ + void* ptr = memalign_impl(boundary, size); + if (UNLIKELY(!ptr && EINVAL != errno)) { + mozalloc_handle_oom(size); + return moz_xmemalign(boundary, size); + } + // non-NULL ptr or errno == EINVAL + return ptr; +} +#endif // if defined(HAVE_MEMALIGN) + +#if defined(HAVE_VALLOC) +void* +moz_xvalloc(size_t size) +{ + void* ptr = valloc_impl(size); + if (UNLIKELY(!ptr)) { + mozalloc_handle_oom(size); + return moz_xvalloc(size); + } + return ptr; +} +#endif // if defined(HAVE_VALLOC) + +#ifndef MOZ_STATIC_RUNTIME +size_t +moz_malloc_usable_size(void *ptr) +{ + if (!ptr) + return 0; + +#if defined(HAVE_MALLOC_USABLE_SIZE) || defined(MOZ_MEMORY) + return malloc_usable_size_impl(ptr); +#elif defined(XP_WIN) + return _msize(ptr); +#else + return 0; +#endif +} + +size_t moz_malloc_size_of(const void *ptr) +{ + return moz_malloc_usable_size((void *)ptr); +} +#endif -- cgit v1.2.3