mirror of
https://github.com/ultravideo/uvg266.git
synced 2024-11-24 10:34:05 +00:00
136 lines
4.1 KiB
C
136 lines
4.1 KiB
C
#ifndef THREADS_H_
|
|
#define THREADS_H_
|
|
/*****************************************************************************
|
|
* This file is part of Kvazaar HEVC encoder.
|
|
*
|
|
* Copyright (C) 2013-2015 Tampere University of Technology and others (see
|
|
* COPYING file).
|
|
*
|
|
* Kvazaar is free software: you can redistribute it and/or modify it under
|
|
* the terms of the GNU Lesser General Public License as published by the
|
|
* Free Software Foundation; either version 2.1 of the License, or (at your
|
|
* option) any later version.
|
|
*
|
|
* Kvazaar is distributed in the hope that it will be useful, but WITHOUT ANY
|
|
* WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS
|
|
* FOR A PARTICULAR PURPOSE. See the GNU Lesser General Public License for
|
|
* more details.
|
|
*
|
|
* You should have received a copy of the GNU General Public License along
|
|
* with Kvazaar. If not, see <http://www.gnu.org/licenses/>.
|
|
****************************************************************************/
|
|
|
|
/**
|
|
* \ingroup Threading
|
|
* \file
|
|
* Abstractions for operating system specific stuff.
|
|
*/
|
|
|
|
#include "global.h" // IWYU pragma: keep
|
|
|
|
#include <pthread.h>
|
|
|
|
#if defined(__GNUC__) && !defined(__MINGW32__)
|
|
#include <unistd.h> // IWYU pragma: export
|
|
#include <time.h> // IWYU pragma: export
|
|
|
|
#define KVZ_CLOCK_T struct timespec
|
|
|
|
#ifdef __MACH__
|
|
// Workaround Mac OS not having clock_gettime.
|
|
// This needs to work with pthread_cond_timedwait.
|
|
# include <sys/time.h>
|
|
# define KVZ_GET_TIME(clock_t) { \
|
|
struct timeval tv; \
|
|
gettimeofday(&tv, NULL); \
|
|
(clock_t)->tv_sec = tv.tv_sec; \
|
|
(clock_t)->tv_nsec = tv.tv_usec * 1000; \
|
|
}
|
|
#else
|
|
# define KVZ_GET_TIME(clock_t) { clock_gettime(CLOCK_MONOTONIC, (clock_t)); }
|
|
#endif
|
|
|
|
#define KVZ_CLOCK_T_AS_DOUBLE(ts) ((double)((ts).tv_sec) + (double)((ts).tv_nsec) / 1e9)
|
|
#define KVZ_CLOCK_T_DIFF(start, stop) ((double)((stop).tv_sec - (start).tv_sec) + (double)((stop).tv_nsec - (start).tv_nsec) / 1e9)
|
|
|
|
#define KVZ_ATOMIC_INC(ptr) __sync_add_and_fetch((volatile int32_t*)ptr, 1)
|
|
#define KVZ_ATOMIC_DEC(ptr) __sync_add_and_fetch((volatile int32_t*)ptr, -1)
|
|
|
|
#else //__GNUC__
|
|
//TODO: we assume !GCC => Windows... this may be bad
|
|
#include <windows.h> // IWYU pragma: export
|
|
|
|
#define KVZ_CLOCK_T struct _FILETIME
|
|
#define KVZ_GET_TIME(clock_t) { GetSystemTimeAsFileTime(clock_t); }
|
|
// _FILETIME has 32bit low and high part of 64bit 100ns resolution timestamp (since 12:00 AM January 1, 1601)
|
|
#define KVZ_CLOCK_T_AS_DOUBLE(ts) ((double)(((uint64_t)(ts).dwHighDateTime)<<32 | (uint64_t)(ts).dwLowDateTime) / 1e7)
|
|
#define KVZ_CLOCK_T_DIFF(start, stop) ((double)((((uint64_t)(stop).dwHighDateTime)<<32 | (uint64_t)(stop).dwLowDateTime) - \
|
|
(((uint64_t)(start).dwHighDateTime)<<32 | (uint64_t)(start).dwLowDateTime)) / 1e7)
|
|
|
|
#define KVZ_ATOMIC_INC(ptr) InterlockedIncrement((volatile LONG*)ptr)
|
|
#define KVZ_ATOMIC_DEC(ptr) InterlockedDecrement((volatile LONG*)ptr)
|
|
|
|
#endif //__GNUC__
|
|
|
|
#ifdef __APPLE__
|
|
// POSIX semaphores are deprecated on Mac so we use Grand Central Dispatch
|
|
// semaphores instead.
|
|
#include <dispatch/dispatch.h>
|
|
typedef dispatch_semaphore_t kvz_sem_t;
|
|
|
|
static INLINE void kvz_sem_init(kvz_sem_t *sem, int value)
|
|
{
|
|
assert(value >= 0);
|
|
*sem = dispatch_semaphore_create(value);
|
|
}
|
|
|
|
static INLINE void kvz_sem_wait(kvz_sem_t *sem)
|
|
{
|
|
dispatch_semaphore_wait(*sem, DISPATCH_TIME_FOREVER);
|
|
}
|
|
|
|
static INLINE void kvz_sem_post(kvz_sem_t *sem)
|
|
{
|
|
dispatch_semaphore_signal(*sem);
|
|
}
|
|
|
|
|
|
static INLINE void kvz_sem_destroy(kvz_sem_t *sem)
|
|
{
|
|
// Do nothing for GCD semaphores.
|
|
}
|
|
|
|
#else
|
|
// Use POSIX semaphores.
|
|
#include <semaphore.h>
|
|
|
|
typedef sem_t kvz_sem_t;
|
|
|
|
static INLINE void kvz_sem_init(kvz_sem_t *sem, int value)
|
|
{
|
|
assert(value >= 0);
|
|
// Pthreads-w32 does not support process-shared semaphores, so pshared
|
|
// must always be zero.
|
|
int pshared = 0;
|
|
sem_init(sem, pshared, value);
|
|
}
|
|
|
|
static INLINE void kvz_sem_wait(kvz_sem_t *sem)
|
|
{
|
|
sem_wait(sem);
|
|
}
|
|
|
|
static INLINE void kvz_sem_post(kvz_sem_t *sem)
|
|
{
|
|
sem_post(sem);
|
|
}
|
|
|
|
static INLINE void kvz_sem_destroy(kvz_sem_t *sem)
|
|
{
|
|
sem_destroy(sem);
|
|
}
|
|
|
|
#endif
|
|
|
|
#endif //THREADS_H_
|