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280fd680c8
This is done by adding a new zend_atomic_bool type. The type definition is only available for compiler alignment and size info; it should be treated as opaque and only the zend_atomic_bool_* family of functions should be used. Note that directly using atomic_bool is complicated. All C++ compilers stdlibs that I checked typedef atomic_bool to std::atomic<bool>, which can't be used in an extern "C" section, and there's at least one usage of this in core, and probably more outside of it. So, instead use platform specific functions, preferring compiler intrinsics.
48 lines
1.9 KiB
C
48 lines
1.9 KiB
C
/*
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+----------------------------------------------------------------------+
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| This source file is subject to version 3.01 of the PHP license, |
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| that is bundled with this package in the file LICENSE, and is |
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| available through the world-wide-web at the following url: |
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| https://www.php.net/license/3_01.txt |
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| If you did not receive a copy of the PHP license and are unable to |
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| obtain it through the world-wide-web, please send a note to |
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| license@php.net so we can mail you a copy immediately. |
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+----------------------------------------------------------------------+
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| Authors: Levi Morrison <morrison.levi@gmail.com> |
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+----------------------------------------------------------------------+
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*/
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#include "zend_atomic.h"
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/* This file contains the non-inline copy of atomic functions. This is useful
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* for extensions written in languages such as Rust. C and C++ compilers are
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* probably going to inline these functions, but in the case they don't, this
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* is also where the code will go.
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*/
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/* Defined for FFI users; everyone else use ZEND_ATOMIC_BOOL_INIT.
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* This is NOT ATOMIC as it is meant for initialization.
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*/
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ZEND_API void zend_atomic_bool_init(zend_atomic_bool *obj, bool desired) {
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ZEND_ATOMIC_BOOL_INIT(obj, desired);
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}
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ZEND_API bool zend_atomic_bool_exchange(zend_atomic_bool *obj, bool desired) {
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return zend_atomic_bool_exchange_ex(obj, desired);
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}
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ZEND_API void zend_atomic_bool_store(zend_atomic_bool *obj, bool desired) {
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zend_atomic_bool_store_ex(obj, desired);
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}
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#if ZEND_WIN32 || HAVE_SYNC_ATOMICS
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/* On these platforms it is non-const due to underlying APIs. */
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ZEND_API bool zend_atomic_bool_load(zend_atomic_bool *obj) {
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return zend_atomic_bool_load_ex(obj);
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}
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#else
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ZEND_API bool zend_atomic_bool_load(const zend_atomic_bool *obj) {
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return zend_atomic_bool_load_ex(obj);
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}
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#endif
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