ref: 095cc7b2a007ca22ece128d6e764c9598e7d1f83
dir: /src/thread.h/
/*
* Copyright © 2018, 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;
}
#elif defined(__plan9__)
typedef struct pthread_t pthread_t;
typedef struct pthread_cond_t pthread_cond_t;
typedef struct pthread_once_t pthread_once_t;
typedef struct pthread_mutex_t pthread_mutex_t;
struct pthread_cond_t {
Rendez;
QLock lock;
};
struct pthread_once_t {
QLock;
int done;
};
struct pthread_mutex_t {
QLock;
};
#define dav1d_init_thread() do {} while (0)
#define PTHREAD_ONCE_INIT {0}
struct pthread_t {
void *waitchan;
void *(*func)(void*);
void *arg;
int pid;
};
typedef struct {
unsigned stack_size;
} pthread_attr_t;
void dav1d_set_thread_name(const char *const name);
int dav1d_pthread_join(pthread_t *thread, void **res);
int pthread_create(pthread_t *thread, const pthread_attr_t *attr, void *(*func)(void*), void *arg);
int pthread_once(pthread_once_t *once_control, void (*init_routine)(void));
#define pthread_join(thread, res) dav1d_pthread_join(&(thread), res)
static int pthread_attr_init(pthread_attr_t *const attr) {
attr->stack_size = 0;
return 0;
}
static int pthread_attr_destroy(pthread_attr_t *const attr) {
USED(attr);
return 0;
}
static int pthread_attr_setstacksize(pthread_attr_t *const attr,
const int stack_size)
{
attr->stack_size = stack_size;
return 0;
}
int pthread_mutex_init(pthread_mutex_t *const mutex, const void *const attr);
int pthread_mutex_destroy(pthread_mutex_t *const mutex);
int pthread_mutex_lock(pthread_mutex_t *const mutex);
int pthread_mutex_unlock(pthread_mutex_t *const mutex);
int pthread_cond_init(pthread_cond_t *const cond, const void *const attr);
int pthread_cond_destroy(pthread_cond_t *const cond);
int pthread_cond_wait(pthread_cond_t *const cond, pthread_mutex_t *const mutex);
int pthread_cond_signal(pthread_cond_t *const cond);
int pthread_cond_broadcast(pthread_cond_t *const cond);
#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);
}
#else
#define dav1d_set_thread_name(name) do {} while (0)
#endif
#endif
#endif /* DAV1D_SRC_THREAD_H */