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fix atomic warnings on clang14 (issue #571)

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This commit is contained in:
Daan 2022-04-08 14:09:38 -07:00
parent 25ecec3c3b
commit b7677b6f84
3 changed files with 13 additions and 7 deletions
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8
include/mimalloc-atomic.h
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@ -23,10 +23,15 @@ terms of the MIT license. A copy of the license can be found in the file
#define _Atomic(tp) std::atomic<tp>
#define mi_atomic(name) std::atomic_##name
#define mi_memory_order(name) std::memory_order_##name
#if !defined(ATOMIC_VAR_INIT) || (__cplusplus >= 202002L) // c++20, see issue #571
#define MI_ATOMIC_VAR_INIT(x) x
#else
#define MI_ATOMIC_VAR_INIT(x) ATOMIC_VAR_INIT(x)
#endif
#elif defined(_MSC_VER)
// Use MSVC C wrapper for C11 atomics
#define _Atomic(tp) tp
#define ATOMIC_VAR_INIT(x) x
#define MI_ATOMIC_VAR_INIT(x) x
#define mi_atomic(name) mi_atomic_##name
#define mi_memory_order(name) mi_memory_order_##name
#else
@ -34,6 +39,7 @@ terms of the MIT license. A copy of the license can be found in the file
#include <stdatomic.h>
#define mi_atomic(name) atomic_##name
#define mi_memory_order(name) memory_order_##name
#define MI_ATOMIC_VAR_INIT(x) ATOMIC_VAR_INIT(x)
#endif
// Various defines for all used memory orders in mimalloc

10
src/init.c
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@ -25,8 +25,8 @@ const mi_page_t _mi_page_empty = {
0, // used
0, // xblock_size
NULL, // local_free
ATOMIC_VAR_INIT(0), // xthread_free
ATOMIC_VAR_INIT(0), // xheap
MI_ATOMIC_VAR_INIT(0), // xthread_free
MI_ATOMIC_VAR_INIT(0), // xheap
NULL, NULL
};
@ -91,7 +91,7 @@ mi_decl_cache_align const mi_heap_t _mi_heap_empty = {
NULL,
MI_SMALL_PAGES_EMPTY,
MI_PAGE_QUEUES_EMPTY,
ATOMIC_VAR_INIT(NULL),
MI_ATOMIC_VAR_INIT(NULL),
0, // tid
0, // cookie
{ 0, 0 }, // keys
@ -123,7 +123,7 @@ mi_heap_t _mi_heap_main = {
&tld_main,
MI_SMALL_PAGES_EMPTY,
MI_PAGE_QUEUES_EMPTY,
ATOMIC_VAR_INIT(NULL),
MI_ATOMIC_VAR_INIT(NULL),
0, // thread id
0, // initial cookie
{ 0, 0 }, // the key of the main heap can be fixed (unlike page keys that need to be secure!)
@ -325,7 +325,7 @@ bool _mi_is_main_thread(void) {
return (_mi_heap_main.thread_id==0 || _mi_heap_main.thread_id == _mi_thread_id());
}
static _Atomic(size_t) thread_count = ATOMIC_VAR_INIT(1);
static _Atomic(size_t) thread_count = MI_ATOMIC_VAR_INIT(1);
size_t _mi_current_thread_count(void) {
return mi_atomic_load_relaxed(&thread_count);

2
src/os.c
View File

@ -983,7 +983,7 @@ static bool mi_os_resetx(void* addr, size_t size, bool reset, mi_stats_t* stats)
if (p != start) return false;
#else
#if defined(MADV_FREE)
static _Atomic(size_t) advice = ATOMIC_VAR_INIT(MADV_FREE);
static _Atomic(size_t) advice = MI_ATOMIC_VAR_INIT(MADV_FREE);
int oadvice = (int)mi_atomic_load_relaxed(&advice);
int err;
while ((err = mi_madvise(start, csize, oadvice)) != 0 && errno == EAGAIN) { errno = 0; };