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author | Test_User <hax@andrewyu.org> | 2024-06-18 02:18:46 -0400 |
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committer | Test_User <hax@andrewyu.org> | 2024-06-18 02:18:46 -0400 |
commit | c82ee1c2cdf492a05e4bf3d3d151205e50c9b603 (patch) | |
tree | d8e71d3c7b7c03bd512d427ab93b4c75ca4f990f /mutex.h | |
parent | f67a7bd24b2e655c21ffdc6160d663d8d5ba5be6 (diff) | |
download | haxircd-c82ee1c2cdf492a05e4bf3d3d151205e50c9b603.tar.gz haxircd-c82ee1c2cdf492a05e4bf3d3d151205e50c9b603.zip |
Optional futex support, increased spam limit
Diffstat (limited to 'mutex.h')
-rw-r--r-- | mutex.h | 83 |
1 files changed, 83 insertions, 0 deletions
@@ -0,0 +1,83 @@ +// Written by: Test_User <hax@andrewyu.org> +// +// This is free and unencumbered software released into the public +// domain. +// +// Anyone is free to copy, modify, publish, use, compile, sell, or +// distribute this software, either in source code form or as a compiled +// binary, for any purpose, commercial or non-commercial, and by any +// means. +// +// In jurisdictions that recognize copyright laws, the author or authors +// of this software dedicate any and all copyright interest in the +// software to the public domain. We make this dedication for the benefit +// of the public at large and to the detriment of our heirs and +// successors. We intend this dedication to be an overt act of +// relinquishment in perpetuity of all present and future rights to this +// software under copyright law. +// +// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, +// EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF +// MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. +// IN NO EVENT SHALL THE AUTHORS BE LIABLE FOR ANY CLAIM, DAMAGES OR +// OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, +// ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR +// OTHER DEALINGS IN THE SOFTWARE. + +#pragma once + +#ifdef USE_FUTEX + +#include <unistd.h> +#include <sys/syscall.h> +#include <stdint.h> +#include <linux/futex.h> + +#define SETUP_MUTEX() 0 +#define MUTEX_TYPE uint32_t + +inline int mutex_init(uint32_t *futex) { + *futex = 0; + return 0; +} + +inline void mutex_lock(uint32_t *futex) { + uint32_t val; + while (val = __sync_lock_test_and_set(futex, 1)) + syscall(SYS_futex, futex, FUTEX_WAIT, val, 0, 0, 0); +} + +inline void mutex_unlock(uint32_t *futex) { + __sync_lock_release(futex); + syscall(SYS_futex, futex, FUTEX_WAKE, 1, 0, 0, 0); +} + +inline void mutex_destroy(uint32_t *futex) { + return; +} + +#else + +#include <pthread.h> + +#define SETUP_MUTEX() pthread_mutexattr_init(&pthread_mutexattr) +#define MUTEX_TYPE pthread_mutex_t + +extern pthread_mutexattr_t pthread_mutexattr; +inline int mutex_init(pthread_mutex_t *mutex) { + return pthread_mutex_init(mutex, &pthread_mutexattr); +} + +inline void mutex_lock(pthread_mutex_t *mutex) { + pthread_mutex_lock(mutex); +} + +inline void mutex_unlock(pthread_mutex_t *mutex) { + pthread_mutex_unlock(mutex); +} + +inline void mutex_destroy(pthread_mutex_t *mutex) { + pthread_mutex_destroy(mutex); +} + +#endif |