From d8bbc7858622b6d9c278469aab701ca0b609cddf Mon Sep 17 00:00:00 2001 From: Daniel Baumann Date: Wed, 15 May 2024 05:35:49 +0200 Subject: Merging upstream version 126.0. Signed-off-by: Daniel Baumann --- third_party/aom/aom_util/aom_pthread.h | 172 +++++++++++++++++++++++++++++++++ 1 file changed, 172 insertions(+) create mode 100644 third_party/aom/aom_util/aom_pthread.h (limited to 'third_party/aom/aom_util/aom_pthread.h') diff --git a/third_party/aom/aom_util/aom_pthread.h b/third_party/aom/aom_util/aom_pthread.h new file mode 100644 index 0000000000..99deeb292a --- /dev/null +++ b/third_party/aom/aom_util/aom_pthread.h @@ -0,0 +1,172 @@ +/* + * Copyright (c) 2024, Alliance for Open Media. All rights reserved + * + * This source code is subject to the terms of the BSD 2 Clause License and + * the Alliance for Open Media Patent License 1.0. If the BSD 2 Clause License + * was not distributed with this source code in the LICENSE file, you can + * obtain it at www.aomedia.org/license/software. If the Alliance for Open + * Media Patent License 1.0 was not distributed with this source code in the + * PATENTS file, you can obtain it at www.aomedia.org/license/patent. + */ +// +// pthread.h wrapper + +#ifndef AOM_AOM_UTIL_AOM_PTHREAD_H_ +#define AOM_AOM_UTIL_AOM_PTHREAD_H_ + +#include "config/aom_config.h" + +#if CONFIG_MULTITHREAD + +#ifdef __cplusplus +extern "C" { +#endif + +#if defined(_WIN32) && !HAVE_PTHREAD_H +// Prevent leaking max/min macros. +#undef NOMINMAX +#define NOMINMAX +#undef WIN32_LEAN_AND_MEAN +#define WIN32_LEAN_AND_MEAN +#include // NOLINT +#include // NOLINT +#include // NOLINT +typedef HANDLE pthread_t; +typedef int pthread_attr_t; +typedef CRITICAL_SECTION pthread_mutex_t; + +#include + +#if _WIN32_WINNT < 0x0600 +#error _WIN32_WINNT must target Windows Vista / Server 2008 or newer. +#endif +typedef CONDITION_VARIABLE pthread_cond_t; + +#ifndef WINAPI_FAMILY_PARTITION +#define WINAPI_PARTITION_DESKTOP 1 +#define WINAPI_FAMILY_PARTITION(x) x +#endif + +#if !WINAPI_FAMILY_PARTITION(WINAPI_PARTITION_DESKTOP) +#define USE_CREATE_THREAD +#endif + +//------------------------------------------------------------------------------ +// simplistic pthread emulation layer + +// _beginthreadex requires __stdcall +#if defined(__GNUC__) && \ + (__GNUC__ > 4 || (__GNUC__ == 4 && __GNUC_MINOR__ >= 2)) +#define THREADFN __attribute__((force_align_arg_pointer)) unsigned int __stdcall +#else +#define THREADFN unsigned int __stdcall +#endif +#define THREAD_EXIT_SUCCESS 0 + +static INLINE int pthread_attr_init(pthread_attr_t *attr) { + (void)attr; + return 0; +} + +static INLINE int pthread_attr_destroy(pthread_attr_t *attr) { + (void)attr; + return 0; +} + +static INLINE int pthread_create(pthread_t *const thread, + const pthread_attr_t *attr, + unsigned int(__stdcall *start)(void *), + void *arg) { + (void)attr; +#ifdef USE_CREATE_THREAD + *thread = CreateThread(NULL, /* lpThreadAttributes */ + 0, /* dwStackSize */ + start, arg, 0, /* dwStackSize */ + NULL); /* lpThreadId */ +#else + *thread = (pthread_t)_beginthreadex(NULL, /* void *security */ + 0, /* unsigned stack_size */ + start, arg, 0, /* unsigned initflag */ + NULL); /* unsigned *thrdaddr */ +#endif + if (*thread == NULL) return 1; + SetThreadPriority(*thread, THREAD_PRIORITY_ABOVE_NORMAL); + return 0; +} + +static INLINE int pthread_join(pthread_t thread, void **value_ptr) { + (void)value_ptr; + return (WaitForSingleObjectEx(thread, INFINITE, FALSE /*bAlertable*/) != + WAIT_OBJECT_0 || + CloseHandle(thread) == 0); +} + +// Mutex +static INLINE int pthread_mutex_init(pthread_mutex_t *const mutex, + void *mutexattr) { + (void)mutexattr; + InitializeCriticalSectionEx(mutex, 0 /*dwSpinCount*/, 0 /*Flags*/); + return 0; +} + +static INLINE int pthread_mutex_trylock(pthread_mutex_t *const mutex) { + return TryEnterCriticalSection(mutex) ? 0 : EBUSY; +} + +static INLINE int pthread_mutex_lock(pthread_mutex_t *const mutex) { + EnterCriticalSection(mutex); + return 0; +} + +static INLINE int pthread_mutex_unlock(pthread_mutex_t *const mutex) { + LeaveCriticalSection(mutex); + return 0; +} + +static INLINE int pthread_mutex_destroy(pthread_mutex_t *const mutex) { + DeleteCriticalSection(mutex); + return 0; +} + +// Condition +static INLINE int pthread_cond_destroy(pthread_cond_t *const condition) { + (void)condition; + return 0; +} + +static INLINE int pthread_cond_init(pthread_cond_t *const condition, + void *cond_attr) { + (void)cond_attr; + InitializeConditionVariable(condition); + return 0; +} + +static INLINE int pthread_cond_signal(pthread_cond_t *const condition) { + WakeConditionVariable(condition); + return 0; +} + +static INLINE int pthread_cond_broadcast(pthread_cond_t *const condition) { + WakeAllConditionVariable(condition); + return 0; +} + +static INLINE int pthread_cond_wait(pthread_cond_t *const condition, + pthread_mutex_t *const mutex) { + int ok; + ok = SleepConditionVariableCS(condition, mutex, INFINITE); + return !ok; +} +#else // _WIN32 +#include // NOLINT +#define THREADFN void * +#define THREAD_EXIT_SUCCESS NULL +#endif + +#ifdef __cplusplus +} // extern "C" +#endif + +#endif // CONFIG_MULTITHREAD + +#endif // AOM_AOM_UTIL_AOM_PTHREAD_H_ -- cgit v1.2.3