From: Jean-Philippe Bruyère Date: Tue, 25 Jan 2022 22:01:06 +0000 (+0100) Subject: replace cross_mutex with tinycthread, add multisampled example X-Git-Url: https://git.osiis.dedyn.io/?a=commitdiff_plain;h=700eb27ab44a8505f9b6152523b4076b8a4c1254;p=jp%2Fvkvg.git replace cross_mutex with tinycthread, add multisampled example --- diff --git a/CMakeLists.txt b/CMakeLists.txt index 2025464..9724a07 100644 --- a/CMakeLists.txt +++ b/CMakeLists.txt @@ -200,7 +200,7 @@ IF (VKVG_USE_GLUTESS) ADD_SUBDIRECTORY (external/glutess) ENDIF () -FILE(GLOB VKVG_OBJ_SRC src/*.c) +FILE(GLOB VKVG_OBJ_SRC src/*.c src/deps/*.c) SET (VKVG_PUBLIC_HEADERS "include/vkvg.h") IF (VKVG_SVG) diff --git a/include/vkvg.h b/include/vkvg.h index 98b0161..cd50c38 100644 --- a/include/vkvg.h +++ b/include/vkvg.h @@ -90,6 +90,7 @@ extern "C" { #define VKVG_LOG_INFO_IBO 0x00000040 #define VKVG_LOG_INFO_VAO (VKVG_LOG_INFO_VBO|VKVG_LOG_INFO_IBO) #define VKVG_LOG_DBG_ARRAYS 0x00001000 +#define VKVG_LOG_THREADING 0x00000080 #define VKVG_LOG_FULL 0xffffffff #define VKVG_LOG_INFO 0x00008000//(VKVG_LOG_INFO_PTS|VKVG_LOG_INFO_PATH|VKVG_LOG_INFO_CMD|VKVG_LOG_INFO_VAO) diff --git a/src/cross_mutex.c b/src/cross_mutex.c deleted file mode 100644 index 9e77560..0000000 --- a/src/cross_mutex.c +++ /dev/null @@ -1,71 +0,0 @@ -/* - * Copyright (c) 2018-2022 Jean-Philippe Bruyère - * - * Permission is hereby granted, free of charge, to any person obtaining a copy of - * this software and associated documentation files (the "Software"), to deal in - * the Software without restriction, including without limitation the rights to use, - * copy, modify, merge, publish, distribute, sublicense, and/or sell copies of the - * Software, and to permit persons to whom the Software is furnished to do so, subject - * to the following conditions: - * - * The above copyright notice and this permission notice shall be included in all - * copies or substantial portions of the Software. - * - * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR - * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, - * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE - * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER - * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, - * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN - * THE SOFTWARE. - */ -#include "cross_mutex.h" - -int MUTEX_INIT(MUTEX *mutex) -{ -#ifdef _WIN32 - *mutex = CreateMutex(0, FALSE, 0);; - return (*mutex==0); -#elif __APPLE__ -#elif __unix__ - return pthread_mutex_init (mutex, NULL); -#else - return -1; -#endif -} - -int MUTEX_LOCK(MUTEX *mutex) -{ -#ifdef _WIN32 - return (WaitForSingleObject(*mutex, INFINITE)==WAIT_FAILED?1:0); -#elif __APPLE__ -#elif __unix__ - return pthread_mutex_lock( mutex ); -#else - return -1; -#endif -} - -int MUTEX_UNLOCK(MUTEX *mutex) -{ -#ifdef _WIN32 - return (ReleaseMutex(*mutex)==0); -#elif __APPLE__ -#elif __unix__ - return pthread_mutex_unlock( mutex ); -#else - return -1; -#endif -} - -int MUTEX_DESTROY(MUTEX *mutex) -{ -#ifdef _WIN32 - return (CloseHandle(*mutex)==0); -#elif __APPLE__ -#elif __unix__ - return pthread_mutex_destroy(mutex); -#else - return -1; -#endif -} diff --git a/src/cross_mutex.h b/src/cross_mutex.h deleted file mode 100644 index 793aeab..0000000 --- a/src/cross_mutex.h +++ /dev/null @@ -1,43 +0,0 @@ -/* - * Copyright (c) 2018-2022 Jean-Philippe Bruyère - * - * Permission is hereby granted, free of charge, to any person obtaining a copy of - * this software and associated documentation files (the "Software"), to deal in - * the Software without restriction, including without limitation the rights to use, - * copy, modify, merge, publish, distribute, sublicense, and/or sell copies of the - * Software, and to permit persons to whom the Software is furnished to do so, subject - * to the following conditions: - * - * The above copyright notice and this permission notice shall be included in all - * copies or substantial portions of the Software. - * - * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR - * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, - * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE - * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER - * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, - * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN - * THE SOFTWARE. - */ -#ifndef CROSS_MUTEX_H -#define CROSS_MUTEX_H - -//cross platform mutex -#ifdef _WIN32 - #include "windows.h" - #include "process.h" - #define MUTEX HANDLE -#elif __APPLE__ - #include "pthread.h" - #define MUTEX pthread_mutex_t -#elif __unix__ - #include "pthread.h" - #define MUTEX pthread_mutex_t -#endif - -int MUTEX_INIT(MUTEX *mutex); -int MUTEX_LOCK(MUTEX *mutex); -int MUTEX_UNLOCK(MUTEX *mutex); -int MUTEX_DESTROY(MUTEX *mutex); - -#endif // CROSS_MUTEX_H diff --git a/src/deps/tinycthread.c b/src/deps/tinycthread.c new file mode 100644 index 0000000..f9cea2e --- /dev/null +++ b/src/deps/tinycthread.c @@ -0,0 +1,594 @@ +/* -*- mode: c; tab-width: 2; indent-tabs-mode: nil; -*- +Copyright (c) 2012 Marcus Geelnard + +This software is provided 'as-is', without any express or implied +warranty. In no event will the authors be held liable for any damages +arising from the use of this software. + +Permission is granted to anyone to use this software for any purpose, +including commercial applications, and to alter it and redistribute it +freely, subject to the following restrictions: + + 1. The origin of this software must not be misrepresented; you must not + claim that you wrote the original software. If you use this software + in a product, an acknowledgment in the product documentation would be + appreciated but is not required. + + 2. Altered source versions must be plainly marked as such, and must not be + misrepresented as being the original software. + + 3. This notice may not be removed or altered from any source + distribution. +*/ + +/* 2013-01-06 Camilla Löwy + * + * Added casts from time_t to DWORD to avoid warnings on VC++. + * Fixed time retrieval on POSIX systems. + */ + +#include "tinycthread.h" +#include + +/* Platform specific includes */ +#if defined(_TTHREAD_POSIX_) + #include + #include + #include + #include + #include +#elif defined(_TTHREAD_WIN32_) + #include + #include +#endif + +/* Standard, good-to-have defines */ +#ifndef NULL + #define NULL (void*)0 +#endif +#ifndef TRUE + #define TRUE 1 +#endif +#ifndef FALSE + #define FALSE 0 +#endif + +int mtx_init(mtx_t *mtx, int type) +{ +#if defined(_TTHREAD_WIN32_) + mtx->mAlreadyLocked = FALSE; + mtx->mRecursive = type & mtx_recursive; + InitializeCriticalSection(&mtx->mHandle); + return thrd_success; +#else + int ret; + pthread_mutexattr_t attr; + pthread_mutexattr_init(&attr); + if (type & mtx_recursive) + { + pthread_mutexattr_settype(&attr, PTHREAD_MUTEX_RECURSIVE); + } + ret = pthread_mutex_init(mtx, &attr); + pthread_mutexattr_destroy(&attr); + return ret == 0 ? thrd_success : thrd_error; +#endif +} + +void mtx_destroy(mtx_t *mtx) +{ +#if defined(_TTHREAD_WIN32_) + DeleteCriticalSection(&mtx->mHandle); +#else + pthread_mutex_destroy(mtx); +#endif +} + +int mtx_lock(mtx_t *mtx) +{ +#if defined(_TTHREAD_WIN32_) + EnterCriticalSection(&mtx->mHandle); + if (!mtx->mRecursive) + { + while(mtx->mAlreadyLocked) Sleep(1000); /* Simulate deadlock... */ + mtx->mAlreadyLocked = TRUE; + } + return thrd_success; +#else + return pthread_mutex_lock(mtx) == 0 ? thrd_success : thrd_error; +#endif +} + +int mtx_timedlock(mtx_t *mtx, const struct timespec *ts) +{ + /* FIXME! */ + (void)mtx; + (void)ts; + return thrd_error; +} + +int mtx_trylock(mtx_t *mtx) +{ +#if defined(_TTHREAD_WIN32_) + int ret = TryEnterCriticalSection(&mtx->mHandle) ? thrd_success : thrd_busy; + if ((!mtx->mRecursive) && (ret == thrd_success) && mtx->mAlreadyLocked) + { + LeaveCriticalSection(&mtx->mHandle); + ret = thrd_busy; + } + return ret; +#else + return (pthread_mutex_trylock(mtx) == 0) ? thrd_success : thrd_busy; +#endif +} + +int mtx_unlock(mtx_t *mtx) +{ +#if defined(_TTHREAD_WIN32_) + mtx->mAlreadyLocked = FALSE; + LeaveCriticalSection(&mtx->mHandle); + return thrd_success; +#else + return pthread_mutex_unlock(mtx) == 0 ? thrd_success : thrd_error;; +#endif +} + +#if defined(_TTHREAD_WIN32_) +#define _CONDITION_EVENT_ONE 0 +#define _CONDITION_EVENT_ALL 1 +#endif + +int cnd_init(cnd_t *cond) +{ +#if defined(_TTHREAD_WIN32_) + cond->mWaitersCount = 0; + + /* Init critical section */ + InitializeCriticalSection(&cond->mWaitersCountLock); + + /* Init events */ + cond->mEvents[_CONDITION_EVENT_ONE] = CreateEvent(NULL, FALSE, FALSE, NULL); + if (cond->mEvents[_CONDITION_EVENT_ONE] == NULL) + { + cond->mEvents[_CONDITION_EVENT_ALL] = NULL; + return thrd_error; + } + cond->mEvents[_CONDITION_EVENT_ALL] = CreateEvent(NULL, TRUE, FALSE, NULL); + if (cond->mEvents[_CONDITION_EVENT_ALL] == NULL) + { + CloseHandle(cond->mEvents[_CONDITION_EVENT_ONE]); + cond->mEvents[_CONDITION_EVENT_ONE] = NULL; + return thrd_error; + } + + return thrd_success; +#else + return pthread_cond_init(cond, NULL) == 0 ? thrd_success : thrd_error; +#endif +} + +void cnd_destroy(cnd_t *cond) +{ +#if defined(_TTHREAD_WIN32_) + if (cond->mEvents[_CONDITION_EVENT_ONE] != NULL) + { + CloseHandle(cond->mEvents[_CONDITION_EVENT_ONE]); + } + if (cond->mEvents[_CONDITION_EVENT_ALL] != NULL) + { + CloseHandle(cond->mEvents[_CONDITION_EVENT_ALL]); + } + DeleteCriticalSection(&cond->mWaitersCountLock); +#else + pthread_cond_destroy(cond); +#endif +} + +int cnd_signal(cnd_t *cond) +{ +#if defined(_TTHREAD_WIN32_) + int haveWaiters; + + /* Are there any waiters? */ + EnterCriticalSection(&cond->mWaitersCountLock); + haveWaiters = (cond->mWaitersCount > 0); + LeaveCriticalSection(&cond->mWaitersCountLock); + + /* If we have any waiting threads, send them a signal */ + if(haveWaiters) + { + if (SetEvent(cond->mEvents[_CONDITION_EVENT_ONE]) == 0) + { + return thrd_error; + } + } + + return thrd_success; +#else + return pthread_cond_signal(cond) == 0 ? thrd_success : thrd_error; +#endif +} + +int cnd_broadcast(cnd_t *cond) +{ +#if defined(_TTHREAD_WIN32_) + int haveWaiters; + + /* Are there any waiters? */ + EnterCriticalSection(&cond->mWaitersCountLock); + haveWaiters = (cond->mWaitersCount > 0); + LeaveCriticalSection(&cond->mWaitersCountLock); + + /* If we have any waiting threads, send them a signal */ + if(haveWaiters) + { + if (SetEvent(cond->mEvents[_CONDITION_EVENT_ALL]) == 0) + { + return thrd_error; + } + } + + return thrd_success; +#else + return pthread_cond_signal(cond) == 0 ? thrd_success : thrd_error; +#endif +} + +#if defined(_TTHREAD_WIN32_) +static int _cnd_timedwait_win32(cnd_t *cond, mtx_t *mtx, DWORD timeout) +{ + int result, lastWaiter; + + /* Increment number of waiters */ + EnterCriticalSection(&cond->mWaitersCountLock); + ++ cond->mWaitersCount; + LeaveCriticalSection(&cond->mWaitersCountLock); + + /* Release the mutex while waiting for the condition (will decrease + the number of waiters when done)... */ + mtx_unlock(mtx); + + /* Wait for either event to become signaled due to cnd_signal() or + cnd_broadcast() being called */ + result = WaitForMultipleObjects(2, cond->mEvents, FALSE, timeout); + if (result == WAIT_TIMEOUT) + { + return thrd_timeout; + } + else if (result == (int)WAIT_FAILED) + { + return thrd_error; + } + + /* Check if we are the last waiter */ + EnterCriticalSection(&cond->mWaitersCountLock); + -- cond->mWaitersCount; + lastWaiter = (result == (WAIT_OBJECT_0 + _CONDITION_EVENT_ALL)) && + (cond->mWaitersCount == 0); + LeaveCriticalSection(&cond->mWaitersCountLock); + + /* If we are the last waiter to be notified to stop waiting, reset the event */ + if (lastWaiter) + { + if (ResetEvent(cond->mEvents[_CONDITION_EVENT_ALL]) == 0) + { + return thrd_error; + } + } + + /* Re-acquire the mutex */ + mtx_lock(mtx); + + return thrd_success; +} +#endif + +int cnd_wait(cnd_t *cond, mtx_t *mtx) +{ +#if defined(_TTHREAD_WIN32_) + return _cnd_timedwait_win32(cond, mtx, INFINITE); +#else + return pthread_cond_wait(cond, mtx) == 0 ? thrd_success : thrd_error; +#endif +} + +int cnd_timedwait(cnd_t *cond, mtx_t *mtx, const struct timespec *ts) +{ +#if defined(_TTHREAD_WIN32_) + struct timespec now; + if (clock_gettime(CLOCK_REALTIME, &now) == 0) + { + DWORD delta = (DWORD) ((ts->tv_sec - now.tv_sec) * 1000 + + (ts->tv_nsec - now.tv_nsec + 500000) / 1000000); + return _cnd_timedwait_win32(cond, mtx, delta); + } + else + return thrd_error; +#else + int ret; + ret = pthread_cond_timedwait(cond, mtx, ts); + if (ret == ETIMEDOUT) + { + return thrd_timeout; + } + return ret == 0 ? thrd_success : thrd_error; +#endif +} + + +/** Information to pass to the new thread (what to run). */ +typedef struct { + thrd_start_t mFunction; /**< Pointer to the function to be executed. */ + void * mArg; /**< Function argument for the thread function. */ +} _thread_start_info; + +/* Thread wrapper function. */ +#if defined(_TTHREAD_WIN32_) +static unsigned WINAPI _thrd_wrapper_function(void * aArg) +#elif defined(_TTHREAD_POSIX_) +static void * _thrd_wrapper_function(void * aArg) +#endif +{ + thrd_start_t fun; + void *arg; + int res; +#if defined(_TTHREAD_POSIX_) + void *pres; +#endif + + /* Get thread startup information */ + _thread_start_info *ti = (_thread_start_info *) aArg; + fun = ti->mFunction; + arg = ti->mArg; + + /* The thread is responsible for freeing the startup information */ + free((void *)ti); + + /* Call the actual client thread function */ + res = fun(arg); + +#if defined(_TTHREAD_WIN32_) + return res; +#else + pres = malloc(sizeof(int)); + if (pres != NULL) + { + *(int*)pres = res; + } + return pres; +#endif +} + +int thrd_create(thrd_t *thr, thrd_start_t func, void *arg) +{ + /* Fill out the thread startup information (passed to the thread wrapper, + which will eventually free it) */ + _thread_start_info* ti = (_thread_start_info*)malloc(sizeof(_thread_start_info)); + if (ti == NULL) + { + return thrd_nomem; + } + ti->mFunction = func; + ti->mArg = arg; + + /* Create the thread */ +#if defined(_TTHREAD_WIN32_) + *thr = (HANDLE)_beginthreadex(NULL, 0, _thrd_wrapper_function, (void *)ti, 0, NULL); +#elif defined(_TTHREAD_POSIX_) + if(pthread_create(thr, NULL, _thrd_wrapper_function, (void *)ti) != 0) + { + *thr = 0; + } +#endif + + /* Did we fail to create the thread? */ + if(!*thr) + { + free(ti); + return thrd_error; + } + + return thrd_success; +} + +thrd_t thrd_current(void) +{ +#if defined(_TTHREAD_WIN32_) + return GetCurrentThread(); +#else + return pthread_self(); +#endif +} + +int thrd_detach(thrd_t thr) +{ + /* FIXME! */ + (void)thr; + return thrd_error; +} + +int thrd_equal(thrd_t thr0, thrd_t thr1) +{ +#if defined(_TTHREAD_WIN32_) + return thr0 == thr1; +#else + return pthread_equal(thr0, thr1); +#endif +} + +void thrd_exit(int res) +{ +#if defined(_TTHREAD_WIN32_) + ExitThread(res); +#else + void *pres = malloc(sizeof(int)); + if (pres != NULL) + { + *(int*)pres = res; + } + pthread_exit(pres); +#endif +} + +int thrd_join(thrd_t thr, int *res) +{ +#if defined(_TTHREAD_WIN32_) + if (WaitForSingleObject(thr, INFINITE) == WAIT_FAILED) + { + return thrd_error; + } + if (res != NULL) + { + DWORD dwRes; + GetExitCodeThread(thr, &dwRes); + *res = dwRes; + } +#elif defined(_TTHREAD_POSIX_) + void *pres; + int ires = 0; + if (pthread_join(thr, &pres) != 0) + { + return thrd_error; + } + if (pres != NULL) + { + ires = *(int*)pres; + free(pres); + } + if (res != NULL) + { + *res = ires; + } +#endif + return thrd_success; +} + +int thrd_sleep(const struct timespec *time_point, struct timespec *remaining) +{ + struct timespec now; +#if defined(_TTHREAD_WIN32_) + DWORD delta; +#else + long delta; +#endif + + /* Get the current time */ + if (clock_gettime(CLOCK_REALTIME, &now) != 0) + return -2; // FIXME: Some specific error code? + +#if defined(_TTHREAD_WIN32_) + /* Delta in milliseconds */ + delta = (DWORD) ((time_point->tv_sec - now.tv_sec) * 1000 + + (time_point->tv_nsec - now.tv_nsec + 500000) / 1000000); + if (delta > 0) + { + Sleep(delta); + } +#else + /* Delta in microseconds */ + delta = (time_point->tv_sec - now.tv_sec) * 1000000L + + (time_point->tv_nsec - now.tv_nsec + 500L) / 1000L; + + /* On some systems, the usleep argument must be < 1000000 */ + while (delta > 999999L) + { + usleep(999999); + delta -= 999999L; + } + if (delta > 0L) + { + usleep((useconds_t)delta); + } +#endif + + /* We don't support waking up prematurely (yet) */ + if (remaining) + { + remaining->tv_sec = 0; + remaining->tv_nsec = 0; + } + return 0; +} + +void thrd_yield(void) +{ +#if defined(_TTHREAD_WIN32_) + Sleep(0); +#else + sched_yield(); +#endif +} + +int tss_create(tss_t *key, tss_dtor_t dtor) +{ +#if defined(_TTHREAD_WIN32_) + /* FIXME: The destructor function is not supported yet... */ + if (dtor != NULL) + { + return thrd_error; + } + *key = TlsAlloc(); + if (*key == TLS_OUT_OF_INDEXES) + { + return thrd_error; + } +#else + if (pthread_key_create(key, dtor) != 0) + { + return thrd_error; + } +#endif + return thrd_success; +} + +void tss_delete(tss_t key) +{ +#if defined(_TTHREAD_WIN32_) + TlsFree(key); +#else + pthread_key_delete(key); +#endif +} + +void *tss_get(tss_t key) +{ +#if defined(_TTHREAD_WIN32_) + return TlsGetValue(key); +#else + return pthread_getspecific(key); +#endif +} + +int tss_set(tss_t key, void *val) +{ +#if defined(_TTHREAD_WIN32_) + if (TlsSetValue(key, val) == 0) + { + return thrd_error; + } +#else + if (pthread_setspecific(key, val) != 0) + { + return thrd_error; + } +#endif + return thrd_success; +} + +#if defined(_TTHREAD_EMULATE_CLOCK_GETTIME_) +int _tthread_clock_gettime(clockid_t clk_id, struct timespec *ts) +{ +#if defined(_TTHREAD_WIN32_) + struct _timeb tb; + _ftime(&tb); + ts->tv_sec = (time_t)tb.time; + ts->tv_nsec = 1000000L * (long)tb.millitm; +#else + struct timeval tv; + gettimeofday(&tv, NULL); + ts->tv_sec = (time_t)tv.tv_sec; + ts->tv_nsec = 1000L * (long)tv.tv_usec; +#endif + return 0; +} +#endif // _TTHREAD_EMULATE_CLOCK_GETTIME_ + diff --git a/src/deps/tinycthread.h b/src/deps/tinycthread.h new file mode 100644 index 0000000..42958c3 --- /dev/null +++ b/src/deps/tinycthread.h @@ -0,0 +1,443 @@ +/* -*- mode: c; tab-width: 2; indent-tabs-mode: nil; -*- +Copyright (c) 2012 Marcus Geelnard + +This software is provided 'as-is', without any express or implied +warranty. In no event will the authors be held liable for any damages +arising from the use of this software. + +Permission is granted to anyone to use this software for any purpose, +including commercial applications, and to alter it and redistribute it +freely, subject to the following restrictions: + + 1. The origin of this software must not be misrepresented; you must not + claim that you wrote the original software. If you use this software + in a product, an acknowledgment in the product documentation would be + appreciated but is not required. + + 2. Altered source versions must be plainly marked as such, and must not be + misrepresented as being the original software. + + 3. This notice may not be removed or altered from any source + distribution. +*/ + +#ifndef _TINYCTHREAD_H_ +#define _TINYCTHREAD_H_ + +/** +* @file +* @mainpage TinyCThread API Reference +* +* @section intro_sec Introduction +* TinyCThread is a minimal, portable implementation of basic threading +* classes for C. +* +* They closely mimic the functionality and naming of the C11 standard, and +* should be easily replaceable with the corresponding standard variants. +* +* @section port_sec Portability +* The Win32 variant uses the native Win32 API for implementing the thread +* classes, while for other systems, the POSIX threads API (pthread) is used. +* +* @section misc_sec Miscellaneous +* The following special keywords are available: #_Thread_local. +* +* For more detailed information, browse the different sections of this +* documentation. A good place to start is: +* tinycthread.h. +*/ + +/* Which platform are we on? */ +#if !defined(_TTHREAD_PLATFORM_DEFINED_) + #if defined(_WIN32) || defined(__WIN32__) || defined(__WINDOWS__) + #define _TTHREAD_WIN32_ + #else + #define _TTHREAD_POSIX_ + #endif + #define _TTHREAD_PLATFORM_DEFINED_ +#endif + +/* Activate some POSIX functionality (e.g. clock_gettime and recursive mutexes) */ +#if defined(_TTHREAD_POSIX_) + #undef _FEATURES_H + #if !defined(_GNU_SOURCE) + #define _GNU_SOURCE + #endif + #if !defined(_POSIX_C_SOURCE) || ((_POSIX_C_SOURCE - 0) < 199309L) + #undef _POSIX_C_SOURCE + #define _POSIX_C_SOURCE 199309L + #endif + #if !defined(_XOPEN_SOURCE) || ((_XOPEN_SOURCE - 0) < 500) + #undef _XOPEN_SOURCE + #define _XOPEN_SOURCE 500 + #endif +#endif + +/* Generic includes */ +#include + +/* Platform specific includes */ +#if defined(_TTHREAD_POSIX_) + #include + #include +#elif defined(_TTHREAD_WIN32_) + #ifndef WIN32_LEAN_AND_MEAN + #define WIN32_LEAN_AND_MEAN + #define __UNDEF_LEAN_AND_MEAN + #endif + #include + #ifdef __UNDEF_LEAN_AND_MEAN + #undef WIN32_LEAN_AND_MEAN + #undef __UNDEF_LEAN_AND_MEAN + #endif +#endif + +/* Workaround for missing TIME_UTC: If time.h doesn't provide TIME_UTC, + it's quite likely that libc does not support it either. Hence, fall back to + the only other supported time specifier: CLOCK_REALTIME (and if that fails, + we're probably emulating clock_gettime anyway, so anything goes). */ +#ifndef TIME_UTC + #ifdef CLOCK_REALTIME + #define TIME_UTC CLOCK_REALTIME + #else + #define TIME_UTC 0 + #endif +#endif + +/* Workaround for missing clock_gettime (most Windows compilers, afaik) */ +#if defined(_TTHREAD_WIN32_) || defined(__APPLE_CC__) +#define _TTHREAD_EMULATE_CLOCK_GETTIME_ +/* Emulate struct timespec */ +#if defined(_TTHREAD_WIN32_) +struct _ttherad_timespec { + time_t tv_sec; + long tv_nsec; +}; +#define timespec _ttherad_timespec +#endif + +/* Emulate clockid_t */ +typedef int _tthread_clockid_t; +#define clockid_t _tthread_clockid_t + +/* Emulate clock_gettime */ +int _tthread_clock_gettime(clockid_t clk_id, struct timespec *ts); +#define clock_gettime _tthread_clock_gettime +#ifndef CLOCK_REALTIME + #define CLOCK_REALTIME 0 +#endif +#endif + + +/** TinyCThread version (major number). */ +#define TINYCTHREAD_VERSION_MAJOR 1 +/** TinyCThread version (minor number). */ +#define TINYCTHREAD_VERSION_MINOR 1 +/** TinyCThread version (full version). */ +#define TINYCTHREAD_VERSION (TINYCTHREAD_VERSION_MAJOR * 100 + TINYCTHREAD_VERSION_MINOR) + +/** +* @def _Thread_local +* Thread local storage keyword. +* A variable that is declared with the @c _Thread_local keyword makes the +* value of the variable local to each thread (known as thread-local storage, +* or TLS). Example usage: +* @code +* // This variable is local to each thread. +* _Thread_local int variable; +* @endcode +* @note The @c _Thread_local keyword is a macro that maps to the corresponding +* compiler directive (e.g. @c __declspec(thread)). +* @note This directive is currently not supported on Mac OS X (it will give +* a compiler error), since compile-time TLS is not supported in the Mac OS X +* executable format. Also, some older versions of MinGW (before GCC 4.x) do +* not support this directive. +* @hideinitializer +*/ + +/* FIXME: Check for a PROPER value of __STDC_VERSION__ to know if we have C11 */ +#if !(defined(__STDC_VERSION__) && (__STDC_VERSION__ >= 201102L)) && !defined(_Thread_local) + #if defined(__GNUC__) || defined(__INTEL_COMPILER) || defined(__SUNPRO_CC) || defined(__IBMCPP__) + #define _Thread_local __thread + #else + #define _Thread_local __declspec(thread) + #endif +#endif + +/* Macros */ +#define TSS_DTOR_ITERATIONS 0 + +/* Function return values */ +#define thrd_error 0 /**< The requested operation failed */ +#define thrd_success 1 /**< The requested operation succeeded */ +#define thrd_timeout 2 /**< The time specified in the call was reached without acquiring the requested resource */ +#define thrd_busy 3 /**< The requested operation failed because a tesource requested by a test and return function is already in use */ +#define thrd_nomem 4 /**< The requested operation failed because it was unable to allocate memory */ + +/* Mutex types */ +#define mtx_plain 1 +#define mtx_timed 2 +#define mtx_try 4 +#define mtx_recursive 8 + +/* Mutex */ +#if defined(_TTHREAD_WIN32_) +typedef struct { + CRITICAL_SECTION mHandle; /* Critical section handle */ + int mAlreadyLocked; /* TRUE if the mutex is already locked */ + int mRecursive; /* TRUE if the mutex is recursive */ +} mtx_t; +#else +typedef pthread_mutex_t mtx_t; +#endif + +/** Create a mutex object. +* @param mtx A mutex object. +* @param type Bit-mask that must have one of the following six values: +* @li @c mtx_plain for a simple non-recursive mutex +* @li @c mtx_timed for a non-recursive mutex that supports timeout +* @li @c mtx_try for a non-recursive mutex that supports test and return +* @li @c mtx_plain | @c mtx_recursive (same as @c mtx_plain, but recursive) +* @li @c mtx_timed | @c mtx_recursive (same as @c mtx_timed, but recursive) +* @li @c mtx_try | @c mtx_recursive (same as @c mtx_try, but recursive) +* @return @ref thrd_success on success, or @ref thrd_error if the request could +* not be honored. +*/ +int mtx_init(mtx_t *mtx, int type); + +/** Release any resources used by the given mutex. +* @param mtx A mutex object. +*/ +void mtx_destroy(mtx_t *mtx); + +/** Lock the given mutex. +* Blocks until the given mutex can be locked. If the mutex is non-recursive, and +* the calling thread already has a lock on the mutex, this call will block +* forever. +* @param mtx A mutex object. +* @return @ref thrd_success on success, or @ref thrd_error if the request could +* not be honored. +*/ +int mtx_lock(mtx_t *mtx); + +/** NOT YET IMPLEMENTED. +*/ +int mtx_timedlock(mtx_t *mtx, const struct timespec *ts); + +/** Try to lock the given mutex. +* The specified mutex shall support either test and return or timeout. If the +* mutex is already locked, the function returns without blocking. +* @param mtx A mutex object. +* @return @ref thrd_success on success, or @ref thrd_busy if the resource +* requested is already in use, or @ref thrd_error if the request could not be +* honored. +*/ +int mtx_trylock(mtx_t *mtx); + +/** Unlock the given mutex. +* @param mtx A mutex object. +* @return @ref thrd_success on success, or @ref thrd_error if the request could +* not be honored. +*/ +int mtx_unlock(mtx_t *mtx); + +/* Condition variable */ +#if defined(_TTHREAD_WIN32_) +typedef struct { + HANDLE mEvents[2]; /* Signal and broadcast event HANDLEs. */ + unsigned int mWaitersCount; /* Count of the number of waiters. */ + CRITICAL_SECTION mWaitersCountLock; /* Serialize access to mWaitersCount. */ +} cnd_t; +#else +typedef pthread_cond_t cnd_t; +#endif + +/** Create a condition variable object. +* @param cond A condition variable object. +* @return @ref thrd_success on success, or @ref thrd_error if the request could +* not be honored. +*/ +int cnd_init(cnd_t *cond); + +/** Release any resources used by the given condition variable. +* @param cond A condition variable object. +*/ +void cnd_destroy(cnd_t *cond); + +/** Signal a condition variable. +* Unblocks one of the threads that are blocked on the given condition variable +* at the time of the call. If no threads are blocked on the condition variable +* at the time of the call, the function does nothing and return success. +* @param cond A condition variable object. +* @return @ref thrd_success on success, or @ref thrd_error if the request could +* not be honored. +*/ +int cnd_signal(cnd_t *cond); + +/** Broadcast a condition variable. +* Unblocks all of the threads that are blocked on the given condition variable +* at the time of the call. If no threads are blocked on the condition variable +* at the time of the call, the function does nothing and return success. +* @param cond A condition variable object. +* @return @ref thrd_success on success, or @ref thrd_error if the request could +* not be honored. +*/ +int cnd_broadcast(cnd_t *cond); + +/** Wait for a condition variable to become signaled. +* The function atomically unlocks the given mutex and endeavors to block until +* the given condition variable is signaled by a call to cnd_signal or to +* cnd_broadcast. When the calling thread becomes unblocked it locks the mutex +* before it returns. +* @param cond A condition variable object. +* @param mtx A mutex object. +* @return @ref thrd_success on success, or @ref thrd_error if the request could +* not be honored. +*/ +int cnd_wait(cnd_t *cond, mtx_t *mtx); + +/** Wait for a condition variable to become signaled. +* The function atomically unlocks the given mutex and endeavors to block until +* the given condition variable is signaled by a call to cnd_signal or to +* cnd_broadcast, or until after the specified time. When the calling thread +* becomes unblocked it locks the mutex before it returns. +* @param cond A condition variable object. +* @param mtx A mutex object. +* @param xt A point in time at which the request will time out (absolute time). +* @return @ref thrd_success upon success, or @ref thrd_timeout if the time +* specified in the call was reached without acquiring the requested resource, or +* @ref thrd_error if the request could not be honored. +*/ +int cnd_timedwait(cnd_t *cond, mtx_t *mtx, const struct timespec *ts); + +/* Thread */ +#if defined(_TTHREAD_WIN32_) +typedef HANDLE thrd_t; +#else +typedef pthread_t thrd_t; +#endif + +/** Thread start function. +* Any thread that is started with the @ref thrd_create() function must be +* started through a function of this type. +* @param arg The thread argument (the @c arg argument of the corresponding +* @ref thrd_create() call). +* @return The thread return value, which can be obtained by another thread +* by using the @ref thrd_join() function. +*/ +typedef int (*thrd_start_t)(void *arg); + +/** Create a new thread. +* @param thr Identifier of the newly created thread. +* @param func A function pointer to the function that will be executed in +* the new thread. +* @param arg An argument to the thread function. +* @return @ref thrd_success on success, or @ref thrd_nomem if no memory could +* be allocated for the thread requested, or @ref thrd_error if the request +* could not be honored. +* @note A thread’s identifier may be reused for a different thread once the +* original thread has exited and either been detached or joined to another +* thread. +*/ +int thrd_create(thrd_t *thr, thrd_start_t func, void *arg); + +/** Identify the calling thread. +* @return The identifier of the calling thread. +*/ +thrd_t thrd_current(void); + +/** NOT YET IMPLEMENTED. +*/ +int thrd_detach(thrd_t thr); + +/** Compare two thread identifiers. +* The function determines if two thread identifiers refer to the same thread. +* @return Zero if the two thread identifiers refer to different threads. +* Otherwise a nonzero value is returned. +*/ +int thrd_equal(thrd_t thr0, thrd_t thr1); + +/** Terminate execution of the calling thread. +* @param res Result code of the calling thread. +*/ +void thrd_exit(int res); + +/** Wait for a thread to terminate. +* The function joins the given thread with the current thread by blocking +* until the other thread has terminated. +* @param thr The thread to join with. +* @param res If this pointer is not NULL, the function will store the result +* code of the given thread in the integer pointed to by @c res. +* @return @ref thrd_success on success, or @ref thrd_error if the request could +* not be honored. +*/ +int thrd_join(thrd_t thr, int *res); + +/** Put the calling thread to sleep. +* Suspend execution of the calling thread. +* @param time_point A point in time at which the thread will resume (absolute time). +* @param remaining If non-NULL, this parameter will hold the remaining time until +* time_point upon return. This will typically be zero, but if +* the thread was woken up by a signal that is not ignored before +* time_point was reached @c remaining will hold a positive +* time. +* @return 0 (zero) on successful sleep, or -1 if an interrupt occurred. +*/ +int thrd_sleep(const struct timespec *time_point, struct timespec *remaining); + +/** Yield execution to another thread. +* Permit other threads to run, even if the current thread would ordinarily +* continue to run. +*/ +void thrd_yield(void); + +/* Thread local storage */ +#if defined(_TTHREAD_WIN32_) +typedef DWORD tss_t; +#else +typedef pthread_key_t tss_t; +#endif + +/** Destructor function for a thread-specific storage. +* @param val The value of the destructed thread-specific storage. +*/ +typedef void (*tss_dtor_t)(void *val); + +/** Create a thread-specific storage. +* @param key The unique key identifier that will be set if the function is +* successful. +* @param dtor Destructor function. This can be NULL. +* @return @ref thrd_success on success, or @ref thrd_error if the request could +* not be honored. +* @note The destructor function is not supported under Windows. If @c dtor is +* not NULL when calling this function under Windows, the function will fail +* and return @ref thrd_error. +*/ +int tss_create(tss_t *key, tss_dtor_t dtor); + +/** Delete a thread-specific storage. +* The function releases any resources used by the given thread-specific +* storage. +* @param key The key that shall be deleted. +*/ +void tss_delete(tss_t key); + +/** Get the value for a thread-specific storage. +* @param key The thread-specific storage identifier. +* @return The value for the current thread held in the given thread-specific +* storage. +*/ +void *tss_get(tss_t key); + +/** Set the value for a thread-specific storage. +* @param key The thread-specific storage identifier. +* @param val The value of the thread-specific storage to set for the current +* thread. +* @return @ref thrd_success on success, or @ref thrd_error if the request could +* not be honored. +*/ +int tss_set(tss_t key, void *val); + + +#endif /* _TINYTHREAD_H_ */ + diff --git a/src/vkvg_context.c b/src/vkvg_context.c index dd845a2..613cf9f 100644 --- a/src/vkvg_context.c +++ b/src/vkvg_context.c @@ -72,6 +72,7 @@ void _init_ctx (VkvgContext ctx) { ctx->renderPassBeginInfo.clearValueCount = 2; else ctx->renderPassBeginInfo.clearValueCount = 3; + ctx->selectedCharSize = 10 << 6; ctx->currentFont = NULL; ctx->selectedFontName[0] = 0; diff --git a/src/vkvg_context_internal.h b/src/vkvg_context_internal.h index c663baf..ff10bea 100644 --- a/src/vkvg_context_internal.h +++ b/src/vkvg_context_internal.h @@ -125,8 +125,8 @@ typedef struct _vkvg_context_save_t{ }vkvg_context_save_t; typedef struct _vkvg_context_t { - VkvgContext pPrev; //double linked list of contexts - VkvgContext pNext; + //VkvgContext pPrev; //double linked list of contexts + //VkvgContext pNext; uint32_t references; //reference count VkvgDevice dev; diff --git a/src/vkvg_device.c b/src/vkvg_device.c index 8bd01ea..fb1d409 100644 --- a/src/vkvg_device.c +++ b/src/vkvg_device.c @@ -58,7 +58,7 @@ void _device_init (VkvgDevice dev, VkInstance inst, VkPhysicalDevice phy, VkDevi dev->phyMemProps = phyInfos->memProps; dev->gQueue = vkh_queue_create ((VkhDevice)dev, qFamIdx, qIndex); - MUTEX_INIT (&dev->gQMutex); + mtx_init (&dev->gQMutex, mtx_plain); vkh_phyinfo_destroy (phyInfos); @@ -68,7 +68,7 @@ void _device_init (VkvgDevice dev, VkInstance inst, VkPhysicalDevice phy, VkDevi }; vmaCreateAllocator(&allocatorInfo, &dev->allocator); - dev->lastCtx= NULL; + //dev->lastCtx= NULL; dev->cmdPool= vkh_cmd_pool_create ((VkhDevice)dev, dev->gQueue->familyIndex, VK_COMMAND_POOL_CREATE_RESET_COMMAND_BUFFER_BIT); dev->cmd = vkh_cmd_buff_create ((VkhDevice)dev, dev->cmdPool, VK_COMMAND_BUFFER_LEVEL_PRIMARY); @@ -307,7 +307,7 @@ void vkvg_device_destroy (VkvgDevice dev) vmaDestroyAllocator (dev->allocator); - MUTEX_DESTROY (&dev->gQMutex); + mtx_destroy (&dev->gQMutex); if (dev->vkhDev) { VkhApp app = vkh_device_get_app (dev->vkhDev); diff --git a/src/vkvg_device_internal.c b/src/vkvg_device_internal.c index 62eb1f1..f52c35d 100644 --- a/src/vkvg_device_internal.c +++ b/src/vkvg_device_internal.c @@ -65,13 +65,13 @@ bool _try_get_phyinfo (VkhPhyInfo* phys, uint32_t phyCount, VkPhysicalDeviceType return false; } void _flush_all_contexes (VkvgDevice dev){ - VkvgContext ctx = dev->lastCtx; + /*VkvgContext ctx = dev->lastCtx; while (ctx != NULL){ if (ctx->cmdStarted) _flush_cmd_until_vx_base (ctx); ctx = ctx->pPrev; - } + }*/ } //TODO:save/reload cache in user temp directory void _create_pipeline_cache(VkvgDevice dev){ @@ -428,9 +428,12 @@ void _wait_and_reset_device_fence (VkvgDevice dev) { } void _submit_cmd (VkvgDevice dev, VkCommandBuffer* cmd, VkFence fence) { - MUTEX_LOCK (&dev->gQMutex); + mtx_lock (&dev->gQMutex); + LOG(VKVG_LOG_THREADING, "[THREADING]start vk_cmd_submit %16lx\n", (unsigned long)thrd_current()); vkh_cmd_submit (dev->gQueue, cmd, fence); - MUTEX_UNLOCK (&dev->gQMutex); + vkDeviceWaitIdle(dev->vkDev); + LOG(VKVG_LOG_THREADING, "[THREADING]end vk_cmd_submit %16lx\n", (unsigned long)thrd_current()); + mtx_unlock (&dev->gQMutex); } bool _init_function_pointers (VkvgDevice dev) { diff --git a/src/vkvg_device_internal.h b/src/vkvg_device_internal.h index b51deae..5fa57ea 100644 --- a/src/vkvg_device_internal.h +++ b/src/vkvg_device_internal.h @@ -66,7 +66,7 @@ typedef struct _vkvg_device_t{ VkImageTiling pngStagTiling; /**< tiling for the blit operation */ VkhQueue gQueue; /**< Vulkan Queue with Graphic flag */ - MUTEX gQMutex; /**< queue submission has to be externally syncronized */ + mtx_t gQMutex; /**< queue submission has to be externally syncronized */ VkRenderPass renderPass; /**< Vulkan render pass, common for all surfaces */ VkRenderPass renderPass_ClearStencil;/**< Vulkan render pass for first draw with context, stencil has to be cleared */ VkRenderPass renderPass_ClearAll; /**< Vulkan render pass for new surface, clear all attacments*/ @@ -107,6 +107,7 @@ typedef struct _vkvg_device_t{ vkvg_status_t status; /**< Current status of device, affected by last operation */ _font_cache_t* fontCache; /**< Store everything relative to common font caching system */ + VkvgContext lastCtx; /**< last element of double linked list of context, used to trigger font caching system update on all contexts*/ int32_t cachedContextCount; diff --git a/src/vkvg_fonts.c b/src/vkvg_fonts.c index 78970be..39e95bc 100644 --- a/src/vkvg_fonts.c +++ b/src/vkvg_fonts.c @@ -149,11 +149,11 @@ void _increase_font_tex_array (VkvgDevice dev){ cache->texLength = newSize; cache->texture = newImg; - VkvgContext next = dev->lastCtx; + /*VkvgContext next = dev->lastCtx; while (next != NULL){ _update_descriptor_set (next, cache->texture, next->dsFont); next = next->pPrev; - } + }*/ _wait_idle(dev); } ///Start a new line in font cache, increase texture layer count if needed. diff --git a/src/vkvg_internal.h b/src/vkvg_internal.h index 1af29c1..7b60024 100644 --- a/src/vkvg_internal.h +++ b/src/vkvg_internal.h @@ -74,7 +74,7 @@ #endif #include "cross_os.h" -#include "cross_mutex.h" +#include "deps/tinycthread.h" //width of the stencil buffer will determine the number of context saving/restore layers //the two first bits of the stencil are the FILL and the CLIP bits, all other bits are //used to store clipping bit on context saving. 8 bit stencil will allow 6 save/restore layer diff --git a/tests/CMakeLists.txt b/tests/CMakeLists.txt index 0b48cdc..f8d4377 100644 --- a/tests/CMakeLists.txt +++ b/tests/CMakeLists.txt @@ -25,6 +25,7 @@ FUNCTION (buildtest TEST_FILE) PRIVATE ${Vulkan_LIBRARIES} ${GLFW3_LIBRARY} + Threads::Threads ) IF (TARGET vkvg_static) TARGET_LINK_LIBRARIES(${TEST_NAME} PRIVATE vkvg_static) @@ -36,7 +37,11 @@ FUNCTION (buildtest TEST_FILE) ENDFUNCTION (buildtest) -ADD_LIBRARY(tests_common OBJECT common/vkengine.c common/test.c common/rnd.c) +set(CMAKE_THREAD_PREFER_PTHREAD TRUE) +set(THREADS_PREFER_PTHREAD_FLAG TRUE) +find_package(Threads REQUIRED) + +ADD_LIBRARY(tests_common OBJECT common/vkengine.c common/test.c common/rnd.c common/tinycthread.c) TARGET_INCLUDE_DIRECTORIES(tests_common PRIVATE @@ -68,6 +73,7 @@ add_custom_target("${PROJECT_NAME}_DataCopy" ALL DEPENDS ${DATAS}) file(GLOB TESTS "*.c" "perfs/*.c" + "multithreading/*.c" ) IF (VKVG_SVG) diff --git a/tests/common/tinycthread.c b/tests/common/tinycthread.c new file mode 100644 index 0000000..f9cea2e --- /dev/null +++ b/tests/common/tinycthread.c @@ -0,0 +1,594 @@ +/* -*- mode: c; tab-width: 2; indent-tabs-mode: nil; -*- +Copyright (c) 2012 Marcus Geelnard + +This software is provided 'as-is', without any express or implied +warranty. In no event will the authors be held liable for any damages +arising from the use of this software. + +Permission is granted to anyone to use this software for any purpose, +including commercial applications, and to alter it and redistribute it +freely, subject to the following restrictions: + + 1. The origin of this software must not be misrepresented; you must not + claim that you wrote the original software. If you use this software + in a product, an acknowledgment in the product documentation would be + appreciated but is not required. + + 2. Altered source versions must be plainly marked as such, and must not be + misrepresented as being the original software. + + 3. This notice may not be removed or altered from any source + distribution. +*/ + +/* 2013-01-06 Camilla Löwy + * + * Added casts from time_t to DWORD to avoid warnings on VC++. + * Fixed time retrieval on POSIX systems. + */ + +#include "tinycthread.h" +#include + +/* Platform specific includes */ +#if defined(_TTHREAD_POSIX_) + #include + #include + #include + #include + #include +#elif defined(_TTHREAD_WIN32_) + #include + #include +#endif + +/* Standard, good-to-have defines */ +#ifndef NULL + #define NULL (void*)0 +#endif +#ifndef TRUE + #define TRUE 1 +#endif +#ifndef FALSE + #define FALSE 0 +#endif + +int mtx_init(mtx_t *mtx, int type) +{ +#if defined(_TTHREAD_WIN32_) + mtx->mAlreadyLocked = FALSE; + mtx->mRecursive = type & mtx_recursive; + InitializeCriticalSection(&mtx->mHandle); + return thrd_success; +#else + int ret; + pthread_mutexattr_t attr; + pthread_mutexattr_init(&attr); + if (type & mtx_recursive) + { + pthread_mutexattr_settype(&attr, PTHREAD_MUTEX_RECURSIVE); + } + ret = pthread_mutex_init(mtx, &attr); + pthread_mutexattr_destroy(&attr); + return ret == 0 ? thrd_success : thrd_error; +#endif +} + +void mtx_destroy(mtx_t *mtx) +{ +#if defined(_TTHREAD_WIN32_) + DeleteCriticalSection(&mtx->mHandle); +#else + pthread_mutex_destroy(mtx); +#endif +} + +int mtx_lock(mtx_t *mtx) +{ +#if defined(_TTHREAD_WIN32_) + EnterCriticalSection(&mtx->mHandle); + if (!mtx->mRecursive) + { + while(mtx->mAlreadyLocked) Sleep(1000); /* Simulate deadlock... */ + mtx->mAlreadyLocked = TRUE; + } + return thrd_success; +#else + return pthread_mutex_lock(mtx) == 0 ? thrd_success : thrd_error; +#endif +} + +int mtx_timedlock(mtx_t *mtx, const struct timespec *ts) +{ + /* FIXME! */ + (void)mtx; + (void)ts; + return thrd_error; +} + +int mtx_trylock(mtx_t *mtx) +{ +#if defined(_TTHREAD_WIN32_) + int ret = TryEnterCriticalSection(&mtx->mHandle) ? thrd_success : thrd_busy; + if ((!mtx->mRecursive) && (ret == thrd_success) && mtx->mAlreadyLocked) + { + LeaveCriticalSection(&mtx->mHandle); + ret = thrd_busy; + } + return ret; +#else + return (pthread_mutex_trylock(mtx) == 0) ? thrd_success : thrd_busy; +#endif +} + +int mtx_unlock(mtx_t *mtx) +{ +#if defined(_TTHREAD_WIN32_) + mtx->mAlreadyLocked = FALSE; + LeaveCriticalSection(&mtx->mHandle); + return thrd_success; +#else + return pthread_mutex_unlock(mtx) == 0 ? thrd_success : thrd_error;; +#endif +} + +#if defined(_TTHREAD_WIN32_) +#define _CONDITION_EVENT_ONE 0 +#define _CONDITION_EVENT_ALL 1 +#endif + +int cnd_init(cnd_t *cond) +{ +#if defined(_TTHREAD_WIN32_) + cond->mWaitersCount = 0; + + /* Init critical section */ + InitializeCriticalSection(&cond->mWaitersCountLock); + + /* Init events */ + cond->mEvents[_CONDITION_EVENT_ONE] = CreateEvent(NULL, FALSE, FALSE, NULL); + if (cond->mEvents[_CONDITION_EVENT_ONE] == NULL) + { + cond->mEvents[_CONDITION_EVENT_ALL] = NULL; + return thrd_error; + } + cond->mEvents[_CONDITION_EVENT_ALL] = CreateEvent(NULL, TRUE, FALSE, NULL); + if (cond->mEvents[_CONDITION_EVENT_ALL] == NULL) + { + CloseHandle(cond->mEvents[_CONDITION_EVENT_ONE]); + cond->mEvents[_CONDITION_EVENT_ONE] = NULL; + return thrd_error; + } + + return thrd_success; +#else + return pthread_cond_init(cond, NULL) == 0 ? thrd_success : thrd_error; +#endif +} + +void cnd_destroy(cnd_t *cond) +{ +#if defined(_TTHREAD_WIN32_) + if (cond->mEvents[_CONDITION_EVENT_ONE] != NULL) + { + CloseHandle(cond->mEvents[_CONDITION_EVENT_ONE]); + } + if (cond->mEvents[_CONDITION_EVENT_ALL] != NULL) + { + CloseHandle(cond->mEvents[_CONDITION_EVENT_ALL]); + } + DeleteCriticalSection(&cond->mWaitersCountLock); +#else + pthread_cond_destroy(cond); +#endif +} + +int cnd_signal(cnd_t *cond) +{ +#if defined(_TTHREAD_WIN32_) + int haveWaiters; + + /* Are there any waiters? */ + EnterCriticalSection(&cond->mWaitersCountLock); + haveWaiters = (cond->mWaitersCount > 0); + LeaveCriticalSection(&cond->mWaitersCountLock); + + /* If we have any waiting threads, send them a signal */ + if(haveWaiters) + { + if (SetEvent(cond->mEvents[_CONDITION_EVENT_ONE]) == 0) + { + return thrd_error; + } + } + + return thrd_success; +#else + return pthread_cond_signal(cond) == 0 ? thrd_success : thrd_error; +#endif +} + +int cnd_broadcast(cnd_t *cond) +{ +#if defined(_TTHREAD_WIN32_) + int haveWaiters; + + /* Are there any waiters? */ + EnterCriticalSection(&cond->mWaitersCountLock); + haveWaiters = (cond->mWaitersCount > 0); + LeaveCriticalSection(&cond->mWaitersCountLock); + + /* If we have any waiting threads, send them a signal */ + if(haveWaiters) + { + if (SetEvent(cond->mEvents[_CONDITION_EVENT_ALL]) == 0) + { + return thrd_error; + } + } + + return thrd_success; +#else + return pthread_cond_signal(cond) == 0 ? thrd_success : thrd_error; +#endif +} + +#if defined(_TTHREAD_WIN32_) +static int _cnd_timedwait_win32(cnd_t *cond, mtx_t *mtx, DWORD timeout) +{ + int result, lastWaiter; + + /* Increment number of waiters */ + EnterCriticalSection(&cond->mWaitersCountLock); + ++ cond->mWaitersCount; + LeaveCriticalSection(&cond->mWaitersCountLock); + + /* Release the mutex while waiting for the condition (will decrease + the number of waiters when done)... */ + mtx_unlock(mtx); + + /* Wait for either event to become signaled due to cnd_signal() or + cnd_broadcast() being called */ + result = WaitForMultipleObjects(2, cond->mEvents, FALSE, timeout); + if (result == WAIT_TIMEOUT) + { + return thrd_timeout; + } + else if (result == (int)WAIT_FAILED) + { + return thrd_error; + } + + /* Check if we are the last waiter */ + EnterCriticalSection(&cond->mWaitersCountLock); + -- cond->mWaitersCount; + lastWaiter = (result == (WAIT_OBJECT_0 + _CONDITION_EVENT_ALL)) && + (cond->mWaitersCount == 0); + LeaveCriticalSection(&cond->mWaitersCountLock); + + /* If we are the last waiter to be notified to stop waiting, reset the event */ + if (lastWaiter) + { + if (ResetEvent(cond->mEvents[_CONDITION_EVENT_ALL]) == 0) + { + return thrd_error; + } + } + + /* Re-acquire the mutex */ + mtx_lock(mtx); + + return thrd_success; +} +#endif + +int cnd_wait(cnd_t *cond, mtx_t *mtx) +{ +#if defined(_TTHREAD_WIN32_) + return _cnd_timedwait_win32(cond, mtx, INFINITE); +#else + return pthread_cond_wait(cond, mtx) == 0 ? thrd_success : thrd_error; +#endif +} + +int cnd_timedwait(cnd_t *cond, mtx_t *mtx, const struct timespec *ts) +{ +#if defined(_TTHREAD_WIN32_) + struct timespec now; + if (clock_gettime(CLOCK_REALTIME, &now) == 0) + { + DWORD delta = (DWORD) ((ts->tv_sec - now.tv_sec) * 1000 + + (ts->tv_nsec - now.tv_nsec + 500000) / 1000000); + return _cnd_timedwait_win32(cond, mtx, delta); + } + else + return thrd_error; +#else + int ret; + ret = pthread_cond_timedwait(cond, mtx, ts); + if (ret == ETIMEDOUT) + { + return thrd_timeout; + } + return ret == 0 ? thrd_success : thrd_error; +#endif +} + + +/** Information to pass to the new thread (what to run). */ +typedef struct { + thrd_start_t mFunction; /**< Pointer to the function to be executed. */ + void * mArg; /**< Function argument for the thread function. */ +} _thread_start_info; + +/* Thread wrapper function. */ +#if defined(_TTHREAD_WIN32_) +static unsigned WINAPI _thrd_wrapper_function(void * aArg) +#elif defined(_TTHREAD_POSIX_) +static void * _thrd_wrapper_function(void * aArg) +#endif +{ + thrd_start_t fun; + void *arg; + int res; +#if defined(_TTHREAD_POSIX_) + void *pres; +#endif + + /* Get thread startup information */ + _thread_start_info *ti = (_thread_start_info *) aArg; + fun = ti->mFunction; + arg = ti->mArg; + + /* The thread is responsible for freeing the startup information */ + free((void *)ti); + + /* Call the actual client thread function */ + res = fun(arg); + +#if defined(_TTHREAD_WIN32_) + return res; +#else + pres = malloc(sizeof(int)); + if (pres != NULL) + { + *(int*)pres = res; + } + return pres; +#endif +} + +int thrd_create(thrd_t *thr, thrd_start_t func, void *arg) +{ + /* Fill out the thread startup information (passed to the thread wrapper, + which will eventually free it) */ + _thread_start_info* ti = (_thread_start_info*)malloc(sizeof(_thread_start_info)); + if (ti == NULL) + { + return thrd_nomem; + } + ti->mFunction = func; + ti->mArg = arg; + + /* Create the thread */ +#if defined(_TTHREAD_WIN32_) + *thr = (HANDLE)_beginthreadex(NULL, 0, _thrd_wrapper_function, (void *)ti, 0, NULL); +#elif defined(_TTHREAD_POSIX_) + if(pthread_create(thr, NULL, _thrd_wrapper_function, (void *)ti) != 0) + { + *thr = 0; + } +#endif + + /* Did we fail to create the thread? */ + if(!*thr) + { + free(ti); + return thrd_error; + } + + return thrd_success; +} + +thrd_t thrd_current(void) +{ +#if defined(_TTHREAD_WIN32_) + return GetCurrentThread(); +#else + return pthread_self(); +#endif +} + +int thrd_detach(thrd_t thr) +{ + /* FIXME! */ + (void)thr; + return thrd_error; +} + +int thrd_equal(thrd_t thr0, thrd_t thr1) +{ +#if defined(_TTHREAD_WIN32_) + return thr0 == thr1; +#else + return pthread_equal(thr0, thr1); +#endif +} + +void thrd_exit(int res) +{ +#if defined(_TTHREAD_WIN32_) + ExitThread(res); +#else + void *pres = malloc(sizeof(int)); + if (pres != NULL) + { + *(int*)pres = res; + } + pthread_exit(pres); +#endif +} + +int thrd_join(thrd_t thr, int *res) +{ +#if defined(_TTHREAD_WIN32_) + if (WaitForSingleObject(thr, INFINITE) == WAIT_FAILED) + { + return thrd_error; + } + if (res != NULL) + { + DWORD dwRes; + GetExitCodeThread(thr, &dwRes); + *res = dwRes; + } +#elif defined(_TTHREAD_POSIX_) + void *pres; + int ires = 0; + if (pthread_join(thr, &pres) != 0) + { + return thrd_error; + } + if (pres != NULL) + { + ires = *(int*)pres; + free(pres); + } + if (res != NULL) + { + *res = ires; + } +#endif + return thrd_success; +} + +int thrd_sleep(const struct timespec *time_point, struct timespec *remaining) +{ + struct timespec now; +#if defined(_TTHREAD_WIN32_) + DWORD delta; +#else + long delta; +#endif + + /* Get the current time */ + if (clock_gettime(CLOCK_REALTIME, &now) != 0) + return -2; // FIXME: Some specific error code? + +#if defined(_TTHREAD_WIN32_) + /* Delta in milliseconds */ + delta = (DWORD) ((time_point->tv_sec - now.tv_sec) * 1000 + + (time_point->tv_nsec - now.tv_nsec + 500000) / 1000000); + if (delta > 0) + { + Sleep(delta); + } +#else + /* Delta in microseconds */ + delta = (time_point->tv_sec - now.tv_sec) * 1000000L + + (time_point->tv_nsec - now.tv_nsec + 500L) / 1000L; + + /* On some systems, the usleep argument must be < 1000000 */ + while (delta > 999999L) + { + usleep(999999); + delta -= 999999L; + } + if (delta > 0L) + { + usleep((useconds_t)delta); + } +#endif + + /* We don't support waking up prematurely (yet) */ + if (remaining) + { + remaining->tv_sec = 0; + remaining->tv_nsec = 0; + } + return 0; +} + +void thrd_yield(void) +{ +#if defined(_TTHREAD_WIN32_) + Sleep(0); +#else + sched_yield(); +#endif +} + +int tss_create(tss_t *key, tss_dtor_t dtor) +{ +#if defined(_TTHREAD_WIN32_) + /* FIXME: The destructor function is not supported yet... */ + if (dtor != NULL) + { + return thrd_error; + } + *key = TlsAlloc(); + if (*key == TLS_OUT_OF_INDEXES) + { + return thrd_error; + } +#else + if (pthread_key_create(key, dtor) != 0) + { + return thrd_error; + } +#endif + return thrd_success; +} + +void tss_delete(tss_t key) +{ +#if defined(_TTHREAD_WIN32_) + TlsFree(key); +#else + pthread_key_delete(key); +#endif +} + +void *tss_get(tss_t key) +{ +#if defined(_TTHREAD_WIN32_) + return TlsGetValue(key); +#else + return pthread_getspecific(key); +#endif +} + +int tss_set(tss_t key, void *val) +{ +#if defined(_TTHREAD_WIN32_) + if (TlsSetValue(key, val) == 0) + { + return thrd_error; + } +#else + if (pthread_setspecific(key, val) != 0) + { + return thrd_error; + } +#endif + return thrd_success; +} + +#if defined(_TTHREAD_EMULATE_CLOCK_GETTIME_) +int _tthread_clock_gettime(clockid_t clk_id, struct timespec *ts) +{ +#if defined(_TTHREAD_WIN32_) + struct _timeb tb; + _ftime(&tb); + ts->tv_sec = (time_t)tb.time; + ts->tv_nsec = 1000000L * (long)tb.millitm; +#else + struct timeval tv; + gettimeofday(&tv, NULL); + ts->tv_sec = (time_t)tv.tv_sec; + ts->tv_nsec = 1000L * (long)tv.tv_usec; +#endif + return 0; +} +#endif // _TTHREAD_EMULATE_CLOCK_GETTIME_ + diff --git a/tests/common/tinycthread.h b/tests/common/tinycthread.h new file mode 100644 index 0000000..42958c3 --- /dev/null +++ b/tests/common/tinycthread.h @@ -0,0 +1,443 @@ +/* -*- mode: c; tab-width: 2; indent-tabs-mode: nil; -*- +Copyright (c) 2012 Marcus Geelnard + +This software is provided 'as-is', without any express or implied +warranty. In no event will the authors be held liable for any damages +arising from the use of this software. + +Permission is granted to anyone to use this software for any purpose, +including commercial applications, and to alter it and redistribute it +freely, subject to the following restrictions: + + 1. The origin of this software must not be misrepresented; you must not + claim that you wrote the original software. If you use this software + in a product, an acknowledgment in the product documentation would be + appreciated but is not required. + + 2. Altered source versions must be plainly marked as such, and must not be + misrepresented as being the original software. + + 3. This notice may not be removed or altered from any source + distribution. +*/ + +#ifndef _TINYCTHREAD_H_ +#define _TINYCTHREAD_H_ + +/** +* @file +* @mainpage TinyCThread API Reference +* +* @section intro_sec Introduction +* TinyCThread is a minimal, portable implementation of basic threading +* classes for C. +* +* They closely mimic the functionality and naming of the C11 standard, and +* should be easily replaceable with the corresponding standard variants. +* +* @section port_sec Portability +* The Win32 variant uses the native Win32 API for implementing the thread +* classes, while for other systems, the POSIX threads API (pthread) is used. +* +* @section misc_sec Miscellaneous +* The following special keywords are available: #_Thread_local. +* +* For more detailed information, browse the different sections of this +* documentation. A good place to start is: +* tinycthread.h. +*/ + +/* Which platform are we on? */ +#if !defined(_TTHREAD_PLATFORM_DEFINED_) + #if defined(_WIN32) || defined(__WIN32__) || defined(__WINDOWS__) + #define _TTHREAD_WIN32_ + #else + #define _TTHREAD_POSIX_ + #endif + #define _TTHREAD_PLATFORM_DEFINED_ +#endif + +/* Activate some POSIX functionality (e.g. clock_gettime and recursive mutexes) */ +#if defined(_TTHREAD_POSIX_) + #undef _FEATURES_H + #if !defined(_GNU_SOURCE) + #define _GNU_SOURCE + #endif + #if !defined(_POSIX_C_SOURCE) || ((_POSIX_C_SOURCE - 0) < 199309L) + #undef _POSIX_C_SOURCE + #define _POSIX_C_SOURCE 199309L + #endif + #if !defined(_XOPEN_SOURCE) || ((_XOPEN_SOURCE - 0) < 500) + #undef _XOPEN_SOURCE + #define _XOPEN_SOURCE 500 + #endif +#endif + +/* Generic includes */ +#include + +/* Platform specific includes */ +#if defined(_TTHREAD_POSIX_) + #include + #include +#elif defined(_TTHREAD_WIN32_) + #ifndef WIN32_LEAN_AND_MEAN + #define WIN32_LEAN_AND_MEAN + #define __UNDEF_LEAN_AND_MEAN + #endif + #include + #ifdef __UNDEF_LEAN_AND_MEAN + #undef WIN32_LEAN_AND_MEAN + #undef __UNDEF_LEAN_AND_MEAN + #endif +#endif + +/* Workaround for missing TIME_UTC: If time.h doesn't provide TIME_UTC, + it's quite likely that libc does not support it either. Hence, fall back to + the only other supported time specifier: CLOCK_REALTIME (and if that fails, + we're probably emulating clock_gettime anyway, so anything goes). */ +#ifndef TIME_UTC + #ifdef CLOCK_REALTIME + #define TIME_UTC CLOCK_REALTIME + #else + #define TIME_UTC 0 + #endif +#endif + +/* Workaround for missing clock_gettime (most Windows compilers, afaik) */ +#if defined(_TTHREAD_WIN32_) || defined(__APPLE_CC__) +#define _TTHREAD_EMULATE_CLOCK_GETTIME_ +/* Emulate struct timespec */ +#if defined(_TTHREAD_WIN32_) +struct _ttherad_timespec { + time_t tv_sec; + long tv_nsec; +}; +#define timespec _ttherad_timespec +#endif + +/* Emulate clockid_t */ +typedef int _tthread_clockid_t; +#define clockid_t _tthread_clockid_t + +/* Emulate clock_gettime */ +int _tthread_clock_gettime(clockid_t clk_id, struct timespec *ts); +#define clock_gettime _tthread_clock_gettime +#ifndef CLOCK_REALTIME + #define CLOCK_REALTIME 0 +#endif +#endif + + +/** TinyCThread version (major number). */ +#define TINYCTHREAD_VERSION_MAJOR 1 +/** TinyCThread version (minor number). */ +#define TINYCTHREAD_VERSION_MINOR 1 +/** TinyCThread version (full version). */ +#define TINYCTHREAD_VERSION (TINYCTHREAD_VERSION_MAJOR * 100 + TINYCTHREAD_VERSION_MINOR) + +/** +* @def _Thread_local +* Thread local storage keyword. +* A variable that is declared with the @c _Thread_local keyword makes the +* value of the variable local to each thread (known as thread-local storage, +* or TLS). Example usage: +* @code +* // This variable is local to each thread. +* _Thread_local int variable; +* @endcode +* @note The @c _Thread_local keyword is a macro that maps to the corresponding +* compiler directive (e.g. @c __declspec(thread)). +* @note This directive is currently not supported on Mac OS X (it will give +* a compiler error), since compile-time TLS is not supported in the Mac OS X +* executable format. Also, some older versions of MinGW (before GCC 4.x) do +* not support this directive. +* @hideinitializer +*/ + +/* FIXME: Check for a PROPER value of __STDC_VERSION__ to know if we have C11 */ +#if !(defined(__STDC_VERSION__) && (__STDC_VERSION__ >= 201102L)) && !defined(_Thread_local) + #if defined(__GNUC__) || defined(__INTEL_COMPILER) || defined(__SUNPRO_CC) || defined(__IBMCPP__) + #define _Thread_local __thread + #else + #define _Thread_local __declspec(thread) + #endif +#endif + +/* Macros */ +#define TSS_DTOR_ITERATIONS 0 + +/* Function return values */ +#define thrd_error 0 /**< The requested operation failed */ +#define thrd_success 1 /**< The requested operation succeeded */ +#define thrd_timeout 2 /**< The time specified in the call was reached without acquiring the requested resource */ +#define thrd_busy 3 /**< The requested operation failed because a tesource requested by a test and return function is already in use */ +#define thrd_nomem 4 /**< The requested operation failed because it was unable to allocate memory */ + +/* Mutex types */ +#define mtx_plain 1 +#define mtx_timed 2 +#define mtx_try 4 +#define mtx_recursive 8 + +/* Mutex */ +#if defined(_TTHREAD_WIN32_) +typedef struct { + CRITICAL_SECTION mHandle; /* Critical section handle */ + int mAlreadyLocked; /* TRUE if the mutex is already locked */ + int mRecursive; /* TRUE if the mutex is recursive */ +} mtx_t; +#else +typedef pthread_mutex_t mtx_t; +#endif + +/** Create a mutex object. +* @param mtx A mutex object. +* @param type Bit-mask that must have one of the following six values: +* @li @c mtx_plain for a simple non-recursive mutex +* @li @c mtx_timed for a non-recursive mutex that supports timeout +* @li @c mtx_try for a non-recursive mutex that supports test and return +* @li @c mtx_plain | @c mtx_recursive (same as @c mtx_plain, but recursive) +* @li @c mtx_timed | @c mtx_recursive (same as @c mtx_timed, but recursive) +* @li @c mtx_try | @c mtx_recursive (same as @c mtx_try, but recursive) +* @return @ref thrd_success on success, or @ref thrd_error if the request could +* not be honored. +*/ +int mtx_init(mtx_t *mtx, int type); + +/** Release any resources used by the given mutex. +* @param mtx A mutex object. +*/ +void mtx_destroy(mtx_t *mtx); + +/** Lock the given mutex. +* Blocks until the given mutex can be locked. If the mutex is non-recursive, and +* the calling thread already has a lock on the mutex, this call will block +* forever. +* @param mtx A mutex object. +* @return @ref thrd_success on success, or @ref thrd_error if the request could +* not be honored. +*/ +int mtx_lock(mtx_t *mtx); + +/** NOT YET IMPLEMENTED. +*/ +int mtx_timedlock(mtx_t *mtx, const struct timespec *ts); + +/** Try to lock the given mutex. +* The specified mutex shall support either test and return or timeout. If the +* mutex is already locked, the function returns without blocking. +* @param mtx A mutex object. +* @return @ref thrd_success on success, or @ref thrd_busy if the resource +* requested is already in use, or @ref thrd_error if the request could not be +* honored. +*/ +int mtx_trylock(mtx_t *mtx); + +/** Unlock the given mutex. +* @param mtx A mutex object. +* @return @ref thrd_success on success, or @ref thrd_error if the request could +* not be honored. +*/ +int mtx_unlock(mtx_t *mtx); + +/* Condition variable */ +#if defined(_TTHREAD_WIN32_) +typedef struct { + HANDLE mEvents[2]; /* Signal and broadcast event HANDLEs. */ + unsigned int mWaitersCount; /* Count of the number of waiters. */ + CRITICAL_SECTION mWaitersCountLock; /* Serialize access to mWaitersCount. */ +} cnd_t; +#else +typedef pthread_cond_t cnd_t; +#endif + +/** Create a condition variable object. +* @param cond A condition variable object. +* @return @ref thrd_success on success, or @ref thrd_error if the request could +* not be honored. +*/ +int cnd_init(cnd_t *cond); + +/** Release any resources used by the given condition variable. +* @param cond A condition variable object. +*/ +void cnd_destroy(cnd_t *cond); + +/** Signal a condition variable. +* Unblocks one of the threads that are blocked on the given condition variable +* at the time of the call. If no threads are blocked on the condition variable +* at the time of the call, the function does nothing and return success. +* @param cond A condition variable object. +* @return @ref thrd_success on success, or @ref thrd_error if the request could +* not be honored. +*/ +int cnd_signal(cnd_t *cond); + +/** Broadcast a condition variable. +* Unblocks all of the threads that are blocked on the given condition variable +* at the time of the call. If no threads are blocked on the condition variable +* at the time of the call, the function does nothing and return success. +* @param cond A condition variable object. +* @return @ref thrd_success on success, or @ref thrd_error if the request could +* not be honored. +*/ +int cnd_broadcast(cnd_t *cond); + +/** Wait for a condition variable to become signaled. +* The function atomically unlocks the given mutex and endeavors to block until +* the given condition variable is signaled by a call to cnd_signal or to +* cnd_broadcast. When the calling thread becomes unblocked it locks the mutex +* before it returns. +* @param cond A condition variable object. +* @param mtx A mutex object. +* @return @ref thrd_success on success, or @ref thrd_error if the request could +* not be honored. +*/ +int cnd_wait(cnd_t *cond, mtx_t *mtx); + +/** Wait for a condition variable to become signaled. +* The function atomically unlocks the given mutex and endeavors to block until +* the given condition variable is signaled by a call to cnd_signal or to +* cnd_broadcast, or until after the specified time. When the calling thread +* becomes unblocked it locks the mutex before it returns. +* @param cond A condition variable object. +* @param mtx A mutex object. +* @param xt A point in time at which the request will time out (absolute time). +* @return @ref thrd_success upon success, or @ref thrd_timeout if the time +* specified in the call was reached without acquiring the requested resource, or +* @ref thrd_error if the request could not be honored. +*/ +int cnd_timedwait(cnd_t *cond, mtx_t *mtx, const struct timespec *ts); + +/* Thread */ +#if defined(_TTHREAD_WIN32_) +typedef HANDLE thrd_t; +#else +typedef pthread_t thrd_t; +#endif + +/** Thread start function. +* Any thread that is started with the @ref thrd_create() function must be +* started through a function of this type. +* @param arg The thread argument (the @c arg argument of the corresponding +* @ref thrd_create() call). +* @return The thread return value, which can be obtained by another thread +* by using the @ref thrd_join() function. +*/ +typedef int (*thrd_start_t)(void *arg); + +/** Create a new thread. +* @param thr Identifier of the newly created thread. +* @param func A function pointer to the function that will be executed in +* the new thread. +* @param arg An argument to the thread function. +* @return @ref thrd_success on success, or @ref thrd_nomem if no memory could +* be allocated for the thread requested, or @ref thrd_error if the request +* could not be honored. +* @note A thread’s identifier may be reused for a different thread once the +* original thread has exited and either been detached or joined to another +* thread. +*/ +int thrd_create(thrd_t *thr, thrd_start_t func, void *arg); + +/** Identify the calling thread. +* @return The identifier of the calling thread. +*/ +thrd_t thrd_current(void); + +/** NOT YET IMPLEMENTED. +*/ +int thrd_detach(thrd_t thr); + +/** Compare two thread identifiers. +* The function determines if two thread identifiers refer to the same thread. +* @return Zero if the two thread identifiers refer to different threads. +* Otherwise a nonzero value is returned. +*/ +int thrd_equal(thrd_t thr0, thrd_t thr1); + +/** Terminate execution of the calling thread. +* @param res Result code of the calling thread. +*/ +void thrd_exit(int res); + +/** Wait for a thread to terminate. +* The function joins the given thread with the current thread by blocking +* until the other thread has terminated. +* @param thr The thread to join with. +* @param res If this pointer is not NULL, the function will store the result +* code of the given thread in the integer pointed to by @c res. +* @return @ref thrd_success on success, or @ref thrd_error if the request could +* not be honored. +*/ +int thrd_join(thrd_t thr, int *res); + +/** Put the calling thread to sleep. +* Suspend execution of the calling thread. +* @param time_point A point in time at which the thread will resume (absolute time). +* @param remaining If non-NULL, this parameter will hold the remaining time until +* time_point upon return. This will typically be zero, but if +* the thread was woken up by a signal that is not ignored before +* time_point was reached @c remaining will hold a positive +* time. +* @return 0 (zero) on successful sleep, or -1 if an interrupt occurred. +*/ +int thrd_sleep(const struct timespec *time_point, struct timespec *remaining); + +/** Yield execution to another thread. +* Permit other threads to run, even if the current thread would ordinarily +* continue to run. +*/ +void thrd_yield(void); + +/* Thread local storage */ +#if defined(_TTHREAD_WIN32_) +typedef DWORD tss_t; +#else +typedef pthread_key_t tss_t; +#endif + +/** Destructor function for a thread-specific storage. +* @param val The value of the destructed thread-specific storage. +*/ +typedef void (*tss_dtor_t)(void *val); + +/** Create a thread-specific storage. +* @param key The unique key identifier that will be set if the function is +* successful. +* @param dtor Destructor function. This can be NULL. +* @return @ref thrd_success on success, or @ref thrd_error if the request could +* not be honored. +* @note The destructor function is not supported under Windows. If @c dtor is +* not NULL when calling this function under Windows, the function will fail +* and return @ref thrd_error. +*/ +int tss_create(tss_t *key, tss_dtor_t dtor); + +/** Delete a thread-specific storage. +* The function releases any resources used by the given thread-specific +* storage. +* @param key The key that shall be deleted. +*/ +void tss_delete(tss_t key); + +/** Get the value for a thread-specific storage. +* @param key The thread-specific storage identifier. +* @return The value for the current thread held in the given thread-specific +* storage. +*/ +void *tss_get(tss_t key); + +/** Set the value for a thread-specific storage. +* @param key The thread-specific storage identifier. +* @param val The value of the thread-specific storage to set for the current +* thread. +* @return @ref thrd_success on success, or @ref thrd_error if the request could +* not be honored. +*/ +int tss_set(tss_t key, void *val); + + +#endif /* _TINYTHREAD_H_ */ + diff --git a/tests/multithreading/multithreaded.c b/tests/multithreading/multithreaded.c new file mode 100644 index 0000000..99c4d35 --- /dev/null +++ b/tests/multithreading/multithreaded.c @@ -0,0 +1,63 @@ +#include "test.h" +#include "tinycthread.h" + +#define THREAD_COUNT 2 + + +static int finishedThreadCount = 0; +static mtx_t mutex; + +void drawRandomRect (VkvgContext ctx, float s) { + float w = (float)test_width; + float h = (float)test_height; + randomize_color(ctx); + + float x = truncf(w*rndf()); + float y = truncf(h*rndf()); + + vkvg_rectangle(ctx, x, y, s, s); +} +int drawRectsThread () { + VkvgSurface s = vkvg_surface_create(device, test_width, test_height); + VkvgContext ctx = vkvg_create(s); + for (uint32_t i=0; i