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-rw-r--r--third_party/aom/aom_util/aom_thread.h430
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diff --git a/third_party/aom/aom_util/aom_thread.h b/third_party/aom/aom_util/aom_thread.h
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--- a/third_party/aom/aom_util/aom_thread.h
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@@ -1,430 +0,0 @@
-/*
- * Copyright (c) 2016, 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.
- */
-//
-// Multi-threaded worker
-//
-// Original source:
-// https://chromium.googlesource.com/webm/libwebp
-
-#ifndef AOM_AOM_UTIL_AOM_THREAD_H_
-#define AOM_AOM_UTIL_AOM_THREAD_H_
-
-#include "config/aom_config.h"
-
-#ifdef __cplusplus
-extern "C" {
-#endif
-
-// Set maximum decode threads to be 8 due to the limit of frame buffers
-// and not enough semaphores in the emulation layer on windows.
-#define MAX_DECODE_THREADS 8
-
-#if CONFIG_MULTITHREAD
-
-#if defined(_WIN32) && !HAVE_PTHREAD_H
-#include <errno.h> // NOLINT
-#include <process.h> // NOLINT
-#include <windows.h> // NOLINT
-typedef HANDLE pthread_t;
-typedef CRITICAL_SECTION pthread_mutex_t;
-
-#if _WIN32_WINNT >= 0x0600 // Windows Vista / Server 2008 or greater
-#define USE_WINDOWS_CONDITION_VARIABLE
-typedef CONDITION_VARIABLE pthread_cond_t;
-#else
-typedef struct {
- HANDLE waiting_sem_;
- HANDLE received_sem_;
- HANDLE signal_event_;
-} pthread_cond_t;
-#endif // _WIN32_WINNT >= 0x600
-
-#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
-#define THREADFN unsigned int __stdcall
-#define THREAD_RETURN(val) (unsigned int)((DWORD_PTR)val)
-
-#if _WIN32_WINNT >= 0x0501 // Windows XP or greater
-#define WaitForSingleObject(obj, timeout) \
- WaitForSingleObjectEx(obj, timeout, FALSE /*bAlertable*/)
-#endif
-
-static INLINE int pthread_create(pthread_t *const thread, const void *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 (WaitForSingleObject(thread, INFINITE) != WAIT_OBJECT_0 ||
- CloseHandle(thread) == 0);
-}
-
-// Mutex
-static INLINE int pthread_mutex_init(pthread_mutex_t *const mutex,
- void *mutexattr) {
- (void)mutexattr;
-#if _WIN32_WINNT >= 0x0600 // Windows Vista / Server 2008 or greater
- InitializeCriticalSectionEx(mutex, 0 /*dwSpinCount*/, 0 /*Flags*/);
-#else
- InitializeCriticalSection(mutex);
-#endif
- 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) {
- int ok = 1;
-#ifdef USE_WINDOWS_CONDITION_VARIABLE
- (void)condition;
-#else
- ok &= (CloseHandle(condition->waiting_sem_) != 0);
- ok &= (CloseHandle(condition->received_sem_) != 0);
- ok &= (CloseHandle(condition->signal_event_) != 0);
-#endif
- return !ok;
-}
-
-static INLINE int pthread_cond_init(pthread_cond_t *const condition,
- void *cond_attr) {
- (void)cond_attr;
-#ifdef USE_WINDOWS_CONDITION_VARIABLE
- InitializeConditionVariable(condition);
-#else
- condition->waiting_sem_ = CreateSemaphore(NULL, 0, MAX_DECODE_THREADS, NULL);
- condition->received_sem_ = CreateSemaphore(NULL, 0, MAX_DECODE_THREADS, NULL);
- condition->signal_event_ = CreateEvent(NULL, FALSE, FALSE, NULL);
- if (condition->waiting_sem_ == NULL || condition->received_sem_ == NULL ||
- condition->signal_event_ == NULL) {
- pthread_cond_destroy(condition);
- return 1;
- }
-#endif
- return 0;
-}
-
-static INLINE int pthread_cond_signal(pthread_cond_t *const condition) {
- int ok = 1;
-#ifdef USE_WINDOWS_CONDITION_VARIABLE
- WakeConditionVariable(condition);
-#else
- if (WaitForSingleObject(condition->waiting_sem_, 0) == WAIT_OBJECT_0) {
- // a thread is waiting in pthread_cond_wait: allow it to be notified
- ok = SetEvent(condition->signal_event_);
- // wait until the event is consumed so the signaler cannot consume
- // the event via its own pthread_cond_wait.
- ok &= (WaitForSingleObject(condition->received_sem_, INFINITE) !=
- WAIT_OBJECT_0);
- }
-#endif
- return !ok;
-}
-
-static INLINE int pthread_cond_broadcast(pthread_cond_t *const condition) {
- int ok = 1;
-#ifdef USE_WINDOWS_CONDITION_VARIABLE
- WakeAllConditionVariable(condition);
-#else
- while (WaitForSingleObject(condition->waiting_sem_, 0) == WAIT_OBJECT_0) {
- // a thread is waiting in pthread_cond_wait: allow it to be notified
- ok &= SetEvent(condition->signal_event_);
- // wait until the event is consumed so the signaler cannot consume
- // the event via its own pthread_cond_wait.
- ok &= (WaitForSingleObject(condition->received_sem_, INFINITE) !=
- WAIT_OBJECT_0);
- }
-#endif
- return !ok;
-}
-
-static INLINE int pthread_cond_wait(pthread_cond_t *const condition,
- pthread_mutex_t *const mutex) {
- int ok;
-#ifdef USE_WINDOWS_CONDITION_VARIABLE
- ok = SleepConditionVariableCS(condition, mutex, INFINITE);
-#else
- // note that there is a consumer available so the signal isn't dropped in
- // pthread_cond_signal
- if (!ReleaseSemaphore(condition->waiting_sem_, 1, NULL)) return 1;
- // now unlock the mutex so pthread_cond_signal may be issued
- pthread_mutex_unlock(mutex);
- ok = (WaitForSingleObject(condition->signal_event_, INFINITE) ==
- WAIT_OBJECT_0);
- ok &= ReleaseSemaphore(condition->received_sem_, 1, NULL);
- pthread_mutex_lock(mutex);
-#endif
- return !ok;
-}
-#elif defined(__OS2__)
-#define INCL_DOS
-#include <os2.h> // NOLINT
-
-#include <errno.h> // NOLINT
-#include <stdlib.h> // NOLINT
-#include <sys/builtin.h> // NOLINT
-
-#define pthread_t TID
-#define pthread_mutex_t HMTX
-
-typedef struct {
- HEV event_sem_;
- HEV ack_sem_;
- volatile unsigned wait_count_;
-} pthread_cond_t;
-
-//------------------------------------------------------------------------------
-// simplistic pthread emulation layer
-
-#define THREADFN void *
-#define THREAD_RETURN(val) (val)
-
-typedef struct {
- void *(*start_)(void *);
- void *arg_;
-} thread_arg;
-
-static void thread_start(void *arg) {
- thread_arg targ = *(thread_arg *)arg;
- free(arg);
-
- targ.start_(targ.arg_);
-}
-
-static INLINE int pthread_create(pthread_t *const thread, const void *attr,
- void *(*start)(void *), void *arg) {
- int tid;
- thread_arg *targ = (thread_arg *)malloc(sizeof(*targ));
- if (targ == NULL) return 1;
-
- (void)attr;
-
- targ->start_ = start;
- targ->arg_ = arg;
- tid = (pthread_t)_beginthread(thread_start, NULL, 1024 * 1024, targ);
- if (tid == -1) {
- free(targ);
- return 1;
- }
-
- *thread = tid;
- return 0;
-}
-
-static INLINE int pthread_join(pthread_t thread, void **value_ptr) {
- (void)value_ptr;
- return DosWaitThread(&thread, DCWW_WAIT) != 0;
-}
-
-// Mutex
-static INLINE int pthread_mutex_init(pthread_mutex_t *const mutex,
- void *mutexattr) {
- (void)mutexattr;
- return DosCreateMutexSem(NULL, mutex, 0, FALSE) != 0;
-}
-
-static INLINE int pthread_mutex_trylock(pthread_mutex_t *const mutex) {
- return DosRequestMutexSem(*mutex, SEM_IMMEDIATE_RETURN) == 0 ? 0 : EBUSY;
-}
-
-static INLINE int pthread_mutex_lock(pthread_mutex_t *const mutex) {
- return DosRequestMutexSem(*mutex, SEM_INDEFINITE_WAIT) != 0;
-}
-
-static INLINE int pthread_mutex_unlock(pthread_mutex_t *const mutex) {
- return DosReleaseMutexSem(*mutex) != 0;
-}
-
-static INLINE int pthread_mutex_destroy(pthread_mutex_t *const mutex) {
- return DosCloseMutexSem(*mutex) != 0;
-}
-
-// Condition
-static INLINE int pthread_cond_destroy(pthread_cond_t *const condition) {
- int ok = 1;
- ok &= DosCloseEventSem(condition->event_sem_) == 0;
- ok &= DosCloseEventSem(condition->ack_sem_) == 0;
- return !ok;
-}
-
-static INLINE int pthread_cond_init(pthread_cond_t *const condition,
- void *cond_attr) {
- int ok = 1;
- (void)cond_attr;
-
- ok &=
- DosCreateEventSem(NULL, &condition->event_sem_, DCE_POSTONE, FALSE) == 0;
- ok &= DosCreateEventSem(NULL, &condition->ack_sem_, DCE_POSTONE, FALSE) == 0;
- if (!ok) {
- pthread_cond_destroy(condition);
- return 1;
- }
- condition->wait_count_ = 0;
- return 0;
-}
-
-static INLINE int pthread_cond_signal(pthread_cond_t *const condition) {
- int ok = 1;
-
- if (!__atomic_cmpxchg32(&condition->wait_count_, 0, 0)) {
- ok &= DosPostEventSem(condition->event_sem_) == 0;
- ok &= DosWaitEventSem(condition->ack_sem_, SEM_INDEFINITE_WAIT) == 0;
- }
-
- return !ok;
-}
-
-static INLINE int pthread_cond_broadcast(pthread_cond_t *const condition) {
- int ok = 1;
-
- while (!__atomic_cmpxchg32(&condition->wait_count_, 0, 0))
- ok &= pthread_cond_signal(condition) == 0;
-
- return !ok;
-}
-
-static INLINE int pthread_cond_wait(pthread_cond_t *const condition,
- pthread_mutex_t *const mutex) {
- int ok = 1;
-
- __atomic_increment(&condition->wait_count_);
-
- ok &= pthread_mutex_unlock(mutex) == 0;
-
- ok &= DosWaitEventSem(condition->event_sem_, SEM_INDEFINITE_WAIT) == 0;
-
- __atomic_decrement(&condition->wait_count_);
-
- ok &= DosPostEventSem(condition->ack_sem_) == 0;
-
- pthread_mutex_lock(mutex);
-
- return !ok;
-}
-#else // _WIN32
-#include <pthread.h> // NOLINT
-#define THREADFN void *
-#define THREAD_RETURN(val) val
-#endif
-
-#endif // CONFIG_MULTITHREAD
-
-// State of the worker thread object
-typedef enum {
- NOT_OK = 0, // object is unusable
- OK, // ready to work
- WORK // busy finishing the current task
-} AVxWorkerStatus;
-
-// Function to be called by the worker thread. Takes two opaque pointers as
-// arguments (data1 and data2). Should return true on success and return false
-// in case of error.
-typedef int (*AVxWorkerHook)(void *, void *);
-
-// Platform-dependent implementation details for the worker.
-typedef struct AVxWorkerImpl AVxWorkerImpl;
-
-// Synchronization object used to launch job in the worker thread
-typedef struct {
- AVxWorkerImpl *impl_;
- AVxWorkerStatus status_;
- AVxWorkerHook hook; // hook to call
- void *data1; // first argument passed to 'hook'
- void *data2; // second argument passed to 'hook'
- int had_error; // true if a call to 'hook' returned false
-} AVxWorker;
-
-// The interface for all thread-worker related functions. All these functions
-// must be implemented.
-typedef struct {
- // Must be called first, before any other method.
- void (*init)(AVxWorker *const worker);
- // Must be called to initialize the object and spawn the thread. Re-entrant.
- // Will potentially launch the thread. Returns false in case of error.
- int (*reset)(AVxWorker *const worker);
- // Makes sure the previous work is finished. Returns true if worker->had_error
- // was not set and no error condition was triggered by the working thread.
- int (*sync)(AVxWorker *const worker);
- // Triggers the thread to call hook() with data1 and data2 arguments. These
- // hook/data1/data2 values can be changed at any time before calling this
- // function, but not be changed afterward until the next call to Sync().
- void (*launch)(AVxWorker *const worker);
- // This function is similar to launch() except that it calls the
- // hook directly instead of using a thread. Convenient to bypass the thread
- // mechanism while still using the AVxWorker structs. sync() must
- // still be called afterward (for error reporting).
- void (*execute)(AVxWorker *const worker);
- // Kill the thread and terminate the object. To use the object again, one
- // must call reset() again.
- void (*end)(AVxWorker *const worker);
-} AVxWorkerInterface;
-
-// Install a new set of threading functions, overriding the defaults. This
-// should be done before any workers are started, i.e., before any encoding or
-// decoding takes place. The contents of the interface struct are copied, it
-// is safe to free the corresponding memory after this call. This function is
-// not thread-safe. Return false in case of invalid pointer or methods.
-int aom_set_worker_interface(const AVxWorkerInterface *const winterface);
-
-// Retrieve the currently set thread worker interface.
-const AVxWorkerInterface *aom_get_worker_interface(void);
-
-//------------------------------------------------------------------------------
-
-#ifdef __cplusplus
-} // extern "C"
-#endif
-
-#endif // AOM_AOM_UTIL_AOM_THREAD_H_
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