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Diffstat (limited to 'third_party/dav1d/src/thread.h')
| -rw-r--r-- | third_party/dav1d/src/thread.h | 188 |
1 files changed, 188 insertions, 0 deletions
diff --git a/third_party/dav1d/src/thread.h b/third_party/dav1d/src/thread.h new file mode 100644 index 0000000000..b091e4f26d --- /dev/null +++ b/third_party/dav1d/src/thread.h @@ -0,0 +1,188 @@ +/* + * Copyright © 2018-2021, VideoLAN and dav1d authors + * Copyright © 2018, Two Orioles, LLC + * All rights reserved. + * + * Redistribution and use in source and binary forms, with or without + * modification, are permitted provided that the following conditions are met: + * + * 1. Redistributions of source code must retain the above copyright notice, this + * list of conditions and the following disclaimer. + * + * 2. Redistributions in binary form must reproduce the above copyright notice, + * this list of conditions and the following disclaimer in the documentation + * and/or other materials provided with the distribution. + * + * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" AND + * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED + * WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE + * DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR + * ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES + * (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; + * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND + * ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT + * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS + * SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. + */ + +#ifndef DAV1D_SRC_THREAD_H +#define DAV1D_SRC_THREAD_H + +#if defined(_WIN32) + +#include <limits.h> +#include <windows.h> + +#define PTHREAD_ONCE_INIT INIT_ONCE_STATIC_INIT + +typedef struct { + HANDLE h; + void *(*func)(void*); + void *arg; +} pthread_t; + +typedef struct { + unsigned stack_size; +} pthread_attr_t; + +typedef SRWLOCK pthread_mutex_t; +typedef CONDITION_VARIABLE pthread_cond_t; +typedef INIT_ONCE pthread_once_t; + +void dav1d_init_thread(void); +void dav1d_set_thread_name(const wchar_t *name); +#define dav1d_set_thread_name(name) dav1d_set_thread_name(L##name) + +int dav1d_pthread_create(pthread_t *thread, const pthread_attr_t *attr, + void *(*func)(void*), void *arg); +int dav1d_pthread_join(pthread_t *thread, void **res); +int dav1d_pthread_once(pthread_once_t *once_control, + void (*init_routine)(void)); + +#define pthread_create dav1d_pthread_create +#define pthread_join(thread, res) dav1d_pthread_join(&(thread), res) +#define pthread_once dav1d_pthread_once + +static inline int pthread_attr_init(pthread_attr_t *const attr) { + attr->stack_size = 0; + return 0; +} + +static inline int pthread_attr_destroy(pthread_attr_t *const attr) { + return 0; +} + +static inline int pthread_attr_setstacksize(pthread_attr_t *const attr, + const size_t stack_size) +{ + if (stack_size > UINT_MAX) return 1; + attr->stack_size = (unsigned) stack_size; + return 0; +} + +static inline int pthread_mutex_init(pthread_mutex_t *const mutex, + const void *const attr) +{ + InitializeSRWLock(mutex); + return 0; +} + +static inline int pthread_mutex_destroy(pthread_mutex_t *const mutex) { + return 0; +} + +static inline int pthread_mutex_lock(pthread_mutex_t *const mutex) { + AcquireSRWLockExclusive(mutex); + return 0; +} + +static inline int pthread_mutex_unlock(pthread_mutex_t *const mutex) { + ReleaseSRWLockExclusive(mutex); + return 0; +} + +static inline int pthread_cond_init(pthread_cond_t *const cond, + const void *const attr) +{ + InitializeConditionVariable(cond); + return 0; +} + +static inline int pthread_cond_destroy(pthread_cond_t *const cond) { + return 0; +} + +static inline int pthread_cond_wait(pthread_cond_t *const cond, + pthread_mutex_t *const mutex) +{ + return !SleepConditionVariableSRW(cond, mutex, INFINITE, 0); +} + +static inline int pthread_cond_signal(pthread_cond_t *const cond) { + WakeConditionVariable(cond); + return 0; +} + +static inline int pthread_cond_broadcast(pthread_cond_t *const cond) { + WakeAllConditionVariable(cond); + return 0; +} + +#else + +#include <pthread.h> + +#define dav1d_init_thread() do {} while (0) + +/* Thread naming support */ + +#ifdef __linux__ + +#include <sys/prctl.h> + +static inline void dav1d_set_thread_name(const char *const name) { + prctl(PR_SET_NAME, name); +} + +#elif defined(__APPLE__) + +static inline void dav1d_set_thread_name(const char *const name) { + pthread_setname_np(name); +} + +#elif defined(__DragonFly__) || defined(__FreeBSD__) || defined(__OpenBSD__) + +#if defined(__FreeBSD__) + /* ALIGN from <sys/param.h> conflicts with ALIGN from "common/attributes.h" */ +#define _SYS_PARAM_H_ +#include <sys/types.h> +#endif +#include <pthread_np.h> + +static inline void dav1d_set_thread_name(const char *const name) { + pthread_set_name_np(pthread_self(), name); +} + +#elif defined(__NetBSD__) + +static inline void dav1d_set_thread_name(const char *const name) { + pthread_setname_np(pthread_self(), "%s", (void*)name); +} + +#elif defined(__HAIKU__) + +#include <os/kernel/OS.h> + +static inline void dav1d_set_thread_name(const char *const name) { + rename_thread(find_thread(NULL), name); +} + +#else + +#define dav1d_set_thread_name(name) do {} while (0) + +#endif + +#endif + +#endif /* DAV1D_SRC_THREAD_H */ |