fork of https://github.com/oxigraph/rocksdb and https://github.com/facebook/rocksdb for nextgraph and oxigraph
You can not select more than 25 topics
Topics must start with a letter or number, can include dashes ('-') and can be up to 35 characters long.
106 lines
4.3 KiB
106 lines
4.3 KiB
// Copyright (c) 2011-present, Facebook, Inc. All rights reserved.
|
|
// This source code is licensed under both the GPLv2 (found in the
|
|
// COPYING file in the root directory) and Apache 2.0 License
|
|
// (found in the LICENSE.Apache file in the root directory).
|
|
|
|
#pragma once
|
|
|
|
#if defined(__clang__) && defined(__GLIBC__)
|
|
// glibc's `posix_memalign()` declaration specifies `throw()` while clang's
|
|
// declaration does not. There is a hack in clang to make its re-declaration
|
|
// compatible with glibc's if they are declared consecutively. That hack breaks
|
|
// if yet another `posix_memalign()` declaration comes between glibc's and
|
|
// clang's declarations. Include "mm_malloc.h" here ensures glibc's and clang's
|
|
// declarations both come before "jemalloc.h"'s `posix_memalign()` declaration.
|
|
//
|
|
// This problem could also be avoided if "jemalloc.h"'s `posix_memalign()`
|
|
// declaration did not specify `throw()` when built with clang.
|
|
#include <mm_malloc.h>
|
|
#endif
|
|
|
|
#ifdef ROCKSDB_JEMALLOC
|
|
#ifdef __FreeBSD__
|
|
#include <malloc_np.h>
|
|
#else
|
|
#define JEMALLOC_MANGLE
|
|
#include <jemalloc/jemalloc.h>
|
|
#endif
|
|
|
|
#ifndef JEMALLOC_CXX_THROW
|
|
#define JEMALLOC_CXX_THROW
|
|
#endif
|
|
|
|
#if defined(OS_WIN) && defined(_MSC_VER)
|
|
|
|
// MSVC does not have weak symbol support. As long as ROCKSDB_JEMALLOC is
|
|
// defined, Jemalloc memory allocator is used.
|
|
static inline bool HasJemalloc() { return true; }
|
|
|
|
#else
|
|
|
|
// definitions for compatibility with older versions of jemalloc
|
|
#if !defined(JEMALLOC_ALLOCATOR)
|
|
#define JEMALLOC_ALLOCATOR
|
|
#endif
|
|
#if !defined(JEMALLOC_RESTRICT_RETURN)
|
|
#define JEMALLOC_RESTRICT_RETURN
|
|
#endif
|
|
#if !defined(JEMALLOC_NOTHROW)
|
|
#define JEMALLOC_NOTHROW JEMALLOC_ATTR(nothrow)
|
|
#endif
|
|
#if !defined(JEMALLOC_ALLOC_SIZE)
|
|
#ifdef JEMALLOC_HAVE_ATTR_ALLOC_SIZE
|
|
#define JEMALLOC_ALLOC_SIZE(s) JEMALLOC_ATTR(alloc_size(s))
|
|
#else
|
|
#define JEMALLOC_ALLOC_SIZE(s)
|
|
#endif
|
|
#endif
|
|
|
|
// Declare non-standard jemalloc APIs as weak symbols. We can null-check these
|
|
// symbols to detect whether jemalloc is linked with the binary.
|
|
extern "C" JEMALLOC_ALLOCATOR JEMALLOC_RESTRICT_RETURN void JEMALLOC_NOTHROW *
|
|
mallocx(size_t, int) JEMALLOC_ATTR(malloc) JEMALLOC_ALLOC_SIZE(1)
|
|
__attribute__((__weak__));
|
|
extern "C" JEMALLOC_ALLOCATOR JEMALLOC_RESTRICT_RETURN void JEMALLOC_NOTHROW *
|
|
rallocx(void *, size_t, int) JEMALLOC_ALLOC_SIZE(2) __attribute__((__weak__));
|
|
extern "C" size_t JEMALLOC_NOTHROW xallocx(void *, size_t, size_t, int)
|
|
__attribute__((__weak__));
|
|
extern "C" size_t JEMALLOC_NOTHROW sallocx(const void *, int)
|
|
JEMALLOC_ATTR(pure) __attribute__((__weak__));
|
|
extern "C" void JEMALLOC_NOTHROW dallocx(void *, int) __attribute__((__weak__));
|
|
extern "C" void JEMALLOC_NOTHROW sdallocx(void *, size_t, int)
|
|
__attribute__((__weak__));
|
|
extern "C" size_t JEMALLOC_NOTHROW nallocx(size_t, int) JEMALLOC_ATTR(pure)
|
|
__attribute__((__weak__));
|
|
extern "C" int JEMALLOC_NOTHROW mallctl(const char *, void *, size_t *, void *,
|
|
size_t) __attribute__((__weak__));
|
|
extern "C" int JEMALLOC_NOTHROW mallctlnametomib(const char *, size_t *,
|
|
size_t *)
|
|
__attribute__((__weak__));
|
|
extern "C" int JEMALLOC_NOTHROW mallctlbymib(const size_t *, size_t, void *,
|
|
size_t *, void *, size_t)
|
|
__attribute__((__weak__));
|
|
extern "C" void JEMALLOC_NOTHROW
|
|
malloc_stats_print(void (*)(void *, const char *), void *, const char *)
|
|
__attribute__((__weak__));
|
|
extern "C" size_t JEMALLOC_NOTHROW
|
|
malloc_usable_size(JEMALLOC_USABLE_SIZE_CONST void *) JEMALLOC_CXX_THROW
|
|
__attribute__((__weak__));
|
|
|
|
// Check if Jemalloc is linked with the binary. Note the main program might be
|
|
// using a different memory allocator even this method return true.
|
|
// It is loosely based on folly::usingJEMalloc(), minus the check that actually
|
|
// allocate memory and see if it is through jemalloc, to handle the dlopen()
|
|
// case:
|
|
// https://github.com/facebook/folly/blob/76cf8b5841fb33137cfbf8b224f0226437c855bc/folly/memory/Malloc.h#L147
|
|
static inline bool HasJemalloc() {
|
|
return mallocx != nullptr && rallocx != nullptr && xallocx != nullptr &&
|
|
sallocx != nullptr && dallocx != nullptr && sdallocx != nullptr &&
|
|
nallocx != nullptr && mallctl != nullptr &&
|
|
mallctlnametomib != nullptr && mallctlbymib != nullptr &&
|
|
malloc_stats_print != nullptr && malloc_usable_size != nullptr;
|
|
}
|
|
|
|
#endif
|
|
|
|
#endif // ROCKSDB_JEMALLOC
|
|
|