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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,118 @@ | ||
| /* | ||
| +----------------------------------------------------------------------+ | ||
| | Swoole | | ||
| +----------------------------------------------------------------------+ | ||
| | This source file is subject to version 2.0 of the Apache license, | | ||
| | that is bundled with this package in the file LICENSE, and is | | ||
| | available through the world-wide-web at the following url: | | ||
| | http://www.apache.org/licenses/LICENSE-2.0.html | | ||
| | If you did not receive a copy of the Apache2.0 license and are unable| | ||
| | to obtain it through the world-wide-web, please send a note to | | ||
| | [email protected] so we can mail you a copy immediately. | | ||
| +----------------------------------------------------------------------+ | ||
| | Author: NathanFreeman <[email protected]> | | ||
| +----------------------------------------------------------------------+ | ||
| */ | ||
|
|
||
| #include "swoole.h" | ||
|
|
||
| #ifdef HAVE_IOURING_FUTEX | ||
| #include "swoole_iouring.h" | ||
| #else | ||
| #include "swoole_coroutine_system.h" | ||
| using swoole::coroutine::System; | ||
| #endif | ||
|
|
||
| #include "swoole_lock.h" | ||
|
|
||
| namespace swoole { | ||
| CoroutineLock::CoroutineLock() : Lock() { | ||
| type_ = COROUTINE_LOCK; | ||
| value = (sw_atomic_t *) sw_mem_pool()->alloc(sizeof(sw_atomic_t)); | ||
| *value = 0; | ||
| } | ||
|
|
||
| CoroutineLock::~CoroutineLock() { | ||
| sw_mem_pool()->free((void *) value); | ||
| value = nullptr; | ||
| } | ||
|
|
||
| int CoroutineLock::lock() { | ||
| return lock_impl(true); | ||
| } | ||
|
|
||
| int CoroutineLock::trylock() { | ||
| return lock_impl(false); | ||
| } | ||
|
|
||
| int CoroutineLock::lock_rd() { | ||
| return lock_impl(true); | ||
| } | ||
|
|
||
| int CoroutineLock::trylock_rd() { | ||
| return lock_impl(false); | ||
| } | ||
|
|
||
| int CoroutineLock::unlock() { | ||
| Coroutine *current_coroutine = Coroutine::get_current(); | ||
| if (current_coroutine == nullptr) { | ||
| swoole_warning("The coroutine lock can only be used in a coroutine environment"); | ||
| return 1; | ||
| } | ||
|
|
||
| if (*value == 0) { | ||
| return 0; | ||
| } | ||
|
|
||
| *value = 0; | ||
| cid = 0; | ||
| coroutine = nullptr; | ||
| #ifdef HAVE_IOURING_FUTEX | ||
| return Iouring::wakeup_futex((uint32_t *) value) >= 0 ? 0 : 1; | ||
| #else | ||
| return 0; | ||
| #endif | ||
| } | ||
|
|
||
| int CoroutineLock::lock_impl(bool blocking) { | ||
| Coroutine *current_coroutine = Coroutine::get_current(); | ||
| if (current_coroutine == nullptr) { | ||
| swoole_warning("The coroutine lock can only be used in a coroutine environment"); | ||
| return 1; | ||
| } | ||
|
|
||
| if (current_coroutine == static_cast<Coroutine *>(coroutine) && current_coroutine->get_cid() == cid) { | ||
| return 0; | ||
| } | ||
|
|
||
| int result = 0; | ||
| #ifdef HAVE_IOURING_FUTEX | ||
| if (!sw_atomic_cmp_set(value, 0, 1)) { | ||
| if (!blocking) { | ||
| return 1; | ||
| } | ||
|
|
||
| result = Iouring::wait_futex((uint32_t *) value); | ||
| *value = 1; | ||
| } | ||
| #else | ||
| while (true) { | ||
| if (sw_atomic_cmp_set(value, 0, 1)) { | ||
| break; | ||
| } | ||
|
|
||
| if (!blocking) { | ||
| return 1; | ||
| } | ||
|
|
||
| if (System::sleep((double) 0.1) != 0) { | ||
| return 1; | ||
| } | ||
| } | ||
| #endif | ||
|
|
||
| cid = current_coroutine->get_cid(); | ||
| coroutine = (void *) current_coroutine; | ||
| return result; | ||
| } | ||
| } // namespace swoole | ||
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