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add stdatomic.h for gcc-4.8.5

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shadow-yuan 2022-08-10 23:45:56 +08:00
parent f2712f4a8f
commit fce0c16ce1
4 changed files with 58 additions and 0 deletions
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6
CMakeLists.txt
View file

@ -22,6 +22,7 @@ option(MI_BUILD_TESTS "Build test executables" ON)
option(MI_DEBUG_TSAN "Build with thread sanitizer (needs clang)" OFF)
option(MI_DEBUG_UBSAN "Build with undefined-behavior sanitizer (needs clang++)" OFF)
option(MI_SKIP_COLLECT_ON_EXIT, "Skip collecting memory on program exit" OFF)
option(MI_ATOMIC_FOR_GCC485 "Build with custom stdatomic.h for gcc-4.8.5" OFF)
# deprecated options
option(MI_CHECK_FULL "Use full internal invariant checking in DEBUG mode (deprecated, use MI_DEBUG_FULL instead)" OFF)
@ -143,6 +144,11 @@ if(MI_SHOW_ERRORS)
list(APPEND mi_defines MI_SHOW_ERRORS=1)
endif()
if(MI_ATOMIC_FOR_GCC485)
message(STATUS "Enable using cumstom stdatomic.h file for gcc 4.8.5 (MI_ATOMIC_FOR_GCC485=ON)")
list(APPEND mi_defines MI_ATOMIC_FOR_GCC485=1)
endif()
if(MI_DEBUG_TSAN)
if(CMAKE_C_COMPILER_ID MATCHES "Clang")
message(STATUS "Build with thread sanitizer (MI_DEBUG_TSAN=ON)")

43
include/gcc-4.8.5-atomic.h Normal file
View file

@ -0,0 +1,43 @@
/**
* @file gcc-4.8.5-atomic.h
*
* @author shadow-yuan (shadow_yuan@qq.com)
*
* @brief because gcc-4.8.5 does not include the file stdatomic.h
* so add this file to pass the compilation
*
*/
#ifndef MI_FOR_GCC_485_ATOMIC_H_
#define MI_FOR_GCC_485_ATOMIC_H_
#define memory_order_relaxed __ATOMIC_RELAXED
#define memory_order_consume __ATOMIC_CONSUME
#define memory_order_acquire __ATOMIC_ACQUIRE
#define memory_order_release __ATOMIC_RELEASE
#define memory_order_acq_rel __ATOMIC_ACQ_REL
#define memory_order_seq_cst __ATOMIC_SEQ_CST
#define _Atomic(x) x
#define __has_include(x) (1)
#define atomic_load_explicit(p, m) __atomic_load_n(p, m)
#define atomic_store_explicit(p, x, m) __atomic_store_n(p, x, m)
#define atomic_exchange(p, x) __atomic_exchange_n(p, x, memory_order_seq_cst)
#define atomic_exchange_explicit(p, x, m) __atomic_exchange_n(p, x, m)
#define atomic_compare_exchange_weak_explicit(p, expected, desired, mem_success, mem_fail) \
__atomic_compare_exchange_n(p, expected, desired, 1, mem_success, mem_fail)
#define atomic_compare_exchange_strong_explicit(p, expected, desired, mem_success, mem_fail) \
__atomic_compare_exchange_n(p, expected, desired, 0, mem_success, mem_fail)
#define atomic_fetch_add_explicit(p, x, m) __atomic_fetch_add(p, x, m)
#define atomic_fetch_sub_explicit(p, x, m) __atomic_fetch_sub(p, x, m)
#define atomic_fetch_and_explicit(p, x, m) __atomic_fetch_and(p, x, m)
#define atomic_fetch_or_explicit(p, x, m) __atomic_fetch_or(p, x, m)
#define ATOMIC_VAR_INIT(x) (x)
#endif // MI_FOR_GCC_485_ATOMIC_H_

5
include/mimalloc-atomic.h
View file

@ -34,6 +34,11 @@ terms of the MIT license. A copy of the license can be found in the file
#define MI_ATOMIC_VAR_INIT(x) x
#define mi_atomic(name) mi_atomic_##name
#define mi_memory_order(name) mi_memory_order_##name
#elif defined(MI_ATOMIC_FOR_GCC485)
#include <gcc-4.8.5-atomic.h>
#define mi_atomic(name) atomic_##name
#define mi_memory_order(name) memory_order_##name
#define MI_ATOMIC_VAR_INIT(x) x
#else
// Use C11 atomics
#include <stdatomic.h>

4
test/test-stress.c
View file

@ -336,7 +336,11 @@ static void* atomic_exchange_ptr(volatile void** p, void* newval) {
return std::atomic_exchange((volatile std::atomic<void*>*)p, newval);
}
#else
#if defined(MI_ATOMIC_FOR_GCC485)
#include <gcc-4.8.5-atomic.h>
#else
#include <stdatomic.h>
#endif
static void* atomic_exchange_ptr(volatile void** p, void* newval) {
return atomic_exchange((volatile _Atomic(void*)*)p, newval);
}