diff options
Diffstat (limited to 'source/3rd-party/SDL2/src/thread/pthread')
7 files changed, 1015 insertions, 0 deletions
diff --git a/source/3rd-party/SDL2/src/thread/pthread/SDL_syscond.c b/source/3rd-party/SDL2/src/thread/pthread/SDL_syscond.c new file mode 100644 index 0000000..d235780 --- /dev/null +++ b/source/3rd-party/SDL2/src/thread/pthread/SDL_syscond.c @@ -0,0 +1,158 @@ +/* + Simple DirectMedia Layer + Copyright (C) 1997-2018 Sam Lantinga <slouken@libsdl.org> + + 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. +*/ +#include "../../SDL_internal.h" + +#include <sys/time.h> +#include <time.h> +#include <unistd.h> +#include <errno.h> +#include <pthread.h> + +#include "SDL_thread.h" +#include "SDL_sysmutex_c.h" + +struct SDL_cond +{ + pthread_cond_t cond; +}; + +/* Create a condition variable */ +SDL_cond * +SDL_CreateCond(void) +{ + SDL_cond *cond; + + cond = (SDL_cond *) SDL_malloc(sizeof(SDL_cond)); + if (cond) { + if (pthread_cond_init(&cond->cond, NULL) != 0) { + SDL_SetError("pthread_cond_init() failed"); + SDL_free(cond); + cond = NULL; + } + } + return (cond); +} + +/* Destroy a condition variable */ +void +SDL_DestroyCond(SDL_cond * cond) +{ + if (cond) { + pthread_cond_destroy(&cond->cond); + SDL_free(cond); + } +} + +/* Restart one of the threads that are waiting on the condition variable */ +int +SDL_CondSignal(SDL_cond * cond) +{ + int retval; + + if (!cond) { + return SDL_SetError("Passed a NULL condition variable"); + } + + retval = 0; + if (pthread_cond_signal(&cond->cond) != 0) { + return SDL_SetError("pthread_cond_signal() failed"); + } + return retval; +} + +/* Restart all threads that are waiting on the condition variable */ +int +SDL_CondBroadcast(SDL_cond * cond) +{ + int retval; + + if (!cond) { + return SDL_SetError("Passed a NULL condition variable"); + } + + retval = 0; + if (pthread_cond_broadcast(&cond->cond) != 0) { + return SDL_SetError("pthread_cond_broadcast() failed"); + } + return retval; +} + +int +SDL_CondWaitTimeout(SDL_cond * cond, SDL_mutex * mutex, Uint32 ms) +{ + int retval; +#ifndef HAVE_CLOCK_GETTIME + struct timeval delta; +#endif + struct timespec abstime; + + if (!cond) { + return SDL_SetError("Passed a NULL condition variable"); + } + +#ifdef HAVE_CLOCK_GETTIME + clock_gettime(CLOCK_REALTIME, &abstime); + + abstime.tv_nsec += (ms % 1000) * 1000000; + abstime.tv_sec += ms / 1000; +#else + gettimeofday(&delta, NULL); + + abstime.tv_sec = delta.tv_sec + (ms / 1000); + abstime.tv_nsec = (delta.tv_usec + (ms % 1000) * 1000) * 1000; +#endif + if (abstime.tv_nsec > 1000000000) { + abstime.tv_sec += 1; + abstime.tv_nsec -= 1000000000; + } + + tryagain: + retval = pthread_cond_timedwait(&cond->cond, &mutex->id, &abstime); + switch (retval) { + case EINTR: + goto tryagain; + /* break; -Wunreachable-code-break */ + case ETIMEDOUT: + retval = SDL_MUTEX_TIMEDOUT; + break; + case 0: + break; + default: + retval = SDL_SetError("pthread_cond_timedwait() failed"); + } + return retval; +} + +/* Wait on the condition variable, unlocking the provided mutex. + The mutex must be locked before entering this function! + */ +int +SDL_CondWait(SDL_cond * cond, SDL_mutex * mutex) +{ + if (!cond) { + return SDL_SetError("Passed a NULL condition variable"); + } else if (pthread_cond_wait(&cond->cond, &mutex->id) != 0) { + return SDL_SetError("pthread_cond_wait() failed"); + } + return 0; +} + +/* vi: set ts=4 sw=4 expandtab: */ diff --git a/source/3rd-party/SDL2/src/thread/pthread/SDL_sysmutex.c b/source/3rd-party/SDL2/src/thread/pthread/SDL_sysmutex.c new file mode 100644 index 0000000..e514778 --- /dev/null +++ b/source/3rd-party/SDL2/src/thread/pthread/SDL_sysmutex.c @@ -0,0 +1,195 @@ +/* + Simple DirectMedia Layer + Copyright (C) 1997-2018 Sam Lantinga <slouken@libsdl.org> + + 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. +*/ +#include "../../SDL_internal.h" + +#include <errno.h> +#include <pthread.h> + +#include "SDL_thread.h" + +#if !SDL_THREAD_PTHREAD_RECURSIVE_MUTEX && \ + !SDL_THREAD_PTHREAD_RECURSIVE_MUTEX_NP +#define FAKE_RECURSIVE_MUTEX 1 +#endif + +struct SDL_mutex +{ + pthread_mutex_t id; +#if FAKE_RECURSIVE_MUTEX + int recursive; + pthread_t owner; +#endif +}; + +SDL_mutex * +SDL_CreateMutex(void) +{ + SDL_mutex *mutex; + pthread_mutexattr_t attr; + + /* Allocate the structure */ + mutex = (SDL_mutex *) SDL_calloc(1, sizeof(*mutex)); + if (mutex) { + pthread_mutexattr_init(&attr); +#if SDL_THREAD_PTHREAD_RECURSIVE_MUTEX + pthread_mutexattr_settype(&attr, PTHREAD_MUTEX_RECURSIVE); +#elif SDL_THREAD_PTHREAD_RECURSIVE_MUTEX_NP + pthread_mutexattr_setkind_np(&attr, PTHREAD_MUTEX_RECURSIVE_NP); +#else + /* No extra attributes necessary */ +#endif + if (pthread_mutex_init(&mutex->id, &attr) != 0) { + SDL_SetError("pthread_mutex_init() failed"); + SDL_free(mutex); + mutex = NULL; + } + } else { + SDL_OutOfMemory(); + } + return (mutex); +} + +void +SDL_DestroyMutex(SDL_mutex * mutex) +{ + if (mutex) { + pthread_mutex_destroy(&mutex->id); + SDL_free(mutex); + } +} + +/* Lock the mutex */ +int +SDL_LockMutex(SDL_mutex * mutex) +{ +#if FAKE_RECURSIVE_MUTEX + pthread_t this_thread; +#endif + + if (mutex == NULL) { + return SDL_SetError("Passed a NULL mutex"); + } + +#if FAKE_RECURSIVE_MUTEX + this_thread = pthread_self(); + if (mutex->owner == this_thread) { + ++mutex->recursive; + } else { + /* The order of operations is important. + We set the locking thread id after we obtain the lock + so unlocks from other threads will fail. + */ + if (pthread_mutex_lock(&mutex->id) == 0) { + mutex->owner = this_thread; + mutex->recursive = 0; + } else { + return SDL_SetError("pthread_mutex_lock() failed"); + } + } +#else + if (pthread_mutex_lock(&mutex->id) != 0) { + return SDL_SetError("pthread_mutex_lock() failed"); + } +#endif + return 0; +} + +int +SDL_TryLockMutex(SDL_mutex * mutex) +{ + int retval; + int result; +#if FAKE_RECURSIVE_MUTEX + pthread_t this_thread; +#endif + + if (mutex == NULL) { + return SDL_SetError("Passed a NULL mutex"); + } + + retval = 0; +#if FAKE_RECURSIVE_MUTEX + this_thread = pthread_self(); + if (mutex->owner == this_thread) { + ++mutex->recursive; + } else { + /* The order of operations is important. + We set the locking thread id after we obtain the lock + so unlocks from other threads will fail. + */ + result = pthread_mutex_trylock(&mutex->id); + if (result == 0) { + mutex->owner = this_thread; + mutex->recursive = 0; + } else if (result == EBUSY) { + retval = SDL_MUTEX_TIMEDOUT; + } else { + retval = SDL_SetError("pthread_mutex_trylock() failed"); + } + } +#else + result = pthread_mutex_trylock(&mutex->id); + if (result != 0) { + if (result == EBUSY) { + retval = SDL_MUTEX_TIMEDOUT; + } else { + retval = SDL_SetError("pthread_mutex_trylock() failed"); + } + } +#endif + return retval; +} + +int +SDL_UnlockMutex(SDL_mutex * mutex) +{ + if (mutex == NULL) { + return SDL_SetError("Passed a NULL mutex"); + } + +#if FAKE_RECURSIVE_MUTEX + /* We can only unlock the mutex if we own it */ + if (pthread_self() == mutex->owner) { + if (mutex->recursive) { + --mutex->recursive; + } else { + /* The order of operations is important. + First reset the owner so another thread doesn't lock + the mutex and set the ownership before we reset it, + then release the lock semaphore. + */ + mutex->owner = 0; + pthread_mutex_unlock(&mutex->id); + } + } else { + return SDL_SetError("mutex not owned by this thread"); + } + +#else + if (pthread_mutex_unlock(&mutex->id) != 0) { + return SDL_SetError("pthread_mutex_unlock() failed"); + } +#endif /* FAKE_RECURSIVE_MUTEX */ + + return 0; +} + +/* vi: set ts=4 sw=4 expandtab: */ diff --git a/source/3rd-party/SDL2/src/thread/pthread/SDL_sysmutex_c.h b/source/3rd-party/SDL2/src/thread/pthread/SDL_sysmutex_c.h new file mode 100644 index 0000000..27ac1da --- /dev/null +++ b/source/3rd-party/SDL2/src/thread/pthread/SDL_sysmutex_c.h @@ -0,0 +1,32 @@ +/* + Simple DirectMedia Layer + Copyright (C) 1997-2018 Sam Lantinga <slouken@libsdl.org> + + 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. +*/ +#include "../../SDL_internal.h" + +#ifndef SDL_mutex_c_h_ +#define SDL_mutex_c_h_ + +struct SDL_mutex +{ + pthread_mutex_t id; +}; + +#endif /* SDL_mutex_c_h_ */ +/* vi: set ts=4 sw=4 expandtab: */ diff --git a/source/3rd-party/SDL2/src/thread/pthread/SDL_syssem.c b/source/3rd-party/SDL2/src/thread/pthread/SDL_syssem.c new file mode 100644 index 0000000..bdebf13 --- /dev/null +++ b/source/3rd-party/SDL2/src/thread/pthread/SDL_syssem.c @@ -0,0 +1,209 @@ +/* + Simple DirectMedia Layer + Copyright (C) 1997-2018 Sam Lantinga <slouken@libsdl.org> + + 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. +*/ +#include "../../SDL_internal.h" + +#include <errno.h> +#include <pthread.h> +#include <semaphore.h> +#include <sys/time.h> +#include <time.h> + +#include "SDL_thread.h" +#include "SDL_timer.h" + +/* Wrapper around POSIX 1003.1b semaphores */ + +#if defined(__MACOSX__) || defined(__IPHONEOS__) +/* Mac OS X doesn't support sem_getvalue() as of version 10.4 */ +#include "../generic/SDL_syssem.c" +#else + +struct SDL_semaphore +{ + sem_t sem; +}; + +/* Create a semaphore, initialized with value */ +SDL_sem * +SDL_CreateSemaphore(Uint32 initial_value) +{ + SDL_sem *sem = (SDL_sem *) SDL_malloc(sizeof(SDL_sem)); + if (sem) { + if (sem_init(&sem->sem, 0, initial_value) < 0) { + SDL_SetError("sem_init() failed"); + SDL_free(sem); + sem = NULL; + } + } else { + SDL_OutOfMemory(); + } + return sem; +} + +void +SDL_DestroySemaphore(SDL_sem * sem) +{ + if (sem) { + sem_destroy(&sem->sem); + SDL_free(sem); + } +} + +int +SDL_SemTryWait(SDL_sem * sem) +{ + int retval; + + if (!sem) { + return SDL_SetError("Passed a NULL semaphore"); + } + retval = SDL_MUTEX_TIMEDOUT; + if (sem_trywait(&sem->sem) == 0) { + retval = 0; + } + return retval; +} + +int +SDL_SemWait(SDL_sem * sem) +{ + int retval; + + if (!sem) { + return SDL_SetError("Passed a NULL semaphore"); + } + + do { + retval = sem_wait(&sem->sem); + } while (retval < 0 && errno == EINTR); + + if (retval < 0) { + retval = SDL_SetError("sem_wait() failed"); + } + return retval; +} + +int +SDL_SemWaitTimeout(SDL_sem * sem, Uint32 timeout) +{ + int retval; +#ifdef HAVE_SEM_TIMEDWAIT +#ifndef HAVE_CLOCK_GETTIME + struct timeval now; +#endif + struct timespec ts_timeout; +#else + Uint32 end; +#endif + + if (!sem) { + return SDL_SetError("Passed a NULL semaphore"); + } + + /* Try the easy cases first */ + if (timeout == 0) { + return SDL_SemTryWait(sem); + } + if (timeout == SDL_MUTEX_MAXWAIT) { + return SDL_SemWait(sem); + } + +#ifdef HAVE_SEM_TIMEDWAIT + /* Setup the timeout. sem_timedwait doesn't wait for + * a lapse of time, but until we reach a certain time. + * This time is now plus the timeout. + */ +#ifdef HAVE_CLOCK_GETTIME + clock_gettime(CLOCK_REALTIME, &ts_timeout); + + /* Add our timeout to current time */ + ts_timeout.tv_nsec += (timeout % 1000) * 1000000; + ts_timeout.tv_sec += timeout / 1000; +#else + gettimeofday(&now, NULL); + + /* Add our timeout to current time */ + ts_timeout.tv_sec = now.tv_sec + (timeout / 1000); + ts_timeout.tv_nsec = (now.tv_usec + (timeout % 1000) * 1000) * 1000; +#endif + + /* Wrap the second if needed */ + if (ts_timeout.tv_nsec > 1000000000) { + ts_timeout.tv_sec += 1; + ts_timeout.tv_nsec -= 1000000000; + } + + /* Wait. */ + do { + retval = sem_timedwait(&sem->sem, &ts_timeout); + } while (retval < 0 && errno == EINTR); + + if (retval < 0) { + if (errno == ETIMEDOUT) { + retval = SDL_MUTEX_TIMEDOUT; + } else { + SDL_SetError("sem_timedwait returned an error: %s", strerror(errno)); + } + } +#else + end = SDL_GetTicks() + timeout; + while ((retval = SDL_SemTryWait(sem)) == SDL_MUTEX_TIMEDOUT) { + if (SDL_TICKS_PASSED(SDL_GetTicks(), end)) { + break; + } + SDL_Delay(1); + } +#endif /* HAVE_SEM_TIMEDWAIT */ + + return retval; +} + +Uint32 +SDL_SemValue(SDL_sem * sem) +{ + int ret = 0; + if (sem) { + sem_getvalue(&sem->sem, &ret); + if (ret < 0) { + ret = 0; + } + } + return (Uint32) ret; +} + +int +SDL_SemPost(SDL_sem * sem) +{ + int retval; + + if (!sem) { + return SDL_SetError("Passed a NULL semaphore"); + } + + retval = sem_post(&sem->sem); + if (retval < 0) { + SDL_SetError("sem_post() failed"); + } + return retval; +} + +#endif /* __MACOSX__ */ +/* vi: set ts=4 sw=4 expandtab: */ diff --git a/source/3rd-party/SDL2/src/thread/pthread/SDL_systhread.c b/source/3rd-party/SDL2/src/thread/pthread/SDL_systhread.c new file mode 100644 index 0000000..ec32937 --- /dev/null +++ b/source/3rd-party/SDL2/src/thread/pthread/SDL_systhread.c @@ -0,0 +1,324 @@ +/* + Simple DirectMedia Layer + Copyright (C) 1997-2018 Sam Lantinga <slouken@libsdl.org> + + 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. +*/ + +#include "../../SDL_internal.h" + +#include <pthread.h> + +#if HAVE_PTHREAD_NP_H +#include <pthread_np.h> +#endif + +#include <signal.h> + +#ifdef __LINUX__ +#include <sys/time.h> +#include <sys/resource.h> +#include <sys/syscall.h> +#include <unistd.h> +#include <errno.h> + +#include "../../core/linux/SDL_dbus.h" +#endif /* __LINUX__ */ + +#if defined(__LINUX__) || defined(__MACOSX__) || defined(__IPHONEOS__) +#include <dlfcn.h> +#ifndef RTLD_DEFAULT +#define RTLD_DEFAULT NULL +#endif +#endif + +#include "SDL_log.h" +#include "SDL_platform.h" +#include "SDL_thread.h" +#include "../SDL_thread_c.h" +#include "../SDL_systhread.h" +#ifdef __ANDROID__ +#include "../../core/android/SDL_android.h" +#endif + +#ifdef __HAIKU__ +#include <kernel/OS.h> +#endif + +#include "SDL_assert.h" + +#ifndef __NACL__ +/* List of signals to mask in the subthreads */ +static const int sig_list[] = { + SIGHUP, SIGINT, SIGQUIT, SIGPIPE, SIGALRM, SIGTERM, SIGCHLD, SIGWINCH, + SIGVTALRM, SIGPROF, 0 +}; +#endif + +static void * +RunThread(void *data) +{ +#ifdef __ANDROID__ + Android_JNI_SetupThread(); +#endif + SDL_RunThread(data); + return NULL; +} + +#if defined(__MACOSX__) || defined(__IPHONEOS__) +static SDL_bool checked_setname = SDL_FALSE; +static int (*ppthread_setname_np)(const char*) = NULL; +#elif defined(__LINUX__) +static SDL_bool checked_setname = SDL_FALSE; +static int (*ppthread_setname_np)(pthread_t, const char*) = NULL; +#endif +int +SDL_SYS_CreateThread(SDL_Thread * thread, void *args) +{ + pthread_attr_t type; + + /* do this here before any threads exist, so there's no race condition. */ + #if defined(__MACOSX__) || defined(__IPHONEOS__) || defined(__LINUX__) + if (!checked_setname) { + void *fn = dlsym(RTLD_DEFAULT, "pthread_setname_np"); + #if defined(__MACOSX__) || defined(__IPHONEOS__) + ppthread_setname_np = (int(*)(const char*)) fn; + #elif defined(__LINUX__) + ppthread_setname_np = (int(*)(pthread_t, const char*)) fn; + #endif + checked_setname = SDL_TRUE; + } + #endif + + /* Set the thread attributes */ + if (pthread_attr_init(&type) != 0) { + return SDL_SetError("Couldn't initialize pthread attributes"); + } + pthread_attr_setdetachstate(&type, PTHREAD_CREATE_JOINABLE); + + /* Set caller-requested stack size. Otherwise: use the system default. */ + if (thread->stacksize) { + pthread_attr_setstacksize(&type, (size_t) thread->stacksize); + } + + /* Create the thread and go! */ + if (pthread_create(&thread->handle, &type, RunThread, args) != 0) { + return SDL_SetError("Not enough resources to create thread"); + } + + return 0; +} + +void +SDL_SYS_SetupThread(const char *name) +{ +#if !defined(__NACL__) + int i; + sigset_t mask; +#endif /* !__NACL__ */ + + if (name != NULL) { + #if defined(__MACOSX__) || defined(__IPHONEOS__) || defined(__LINUX__) + SDL_assert(checked_setname); + if (ppthread_setname_np != NULL) { + #if defined(__MACOSX__) || defined(__IPHONEOS__) + ppthread_setname_np(name); + #elif defined(__LINUX__) + ppthread_setname_np(pthread_self(), name); + #endif + } + #elif HAVE_PTHREAD_SETNAME_NP + #if defined(__NETBSD__) + pthread_setname_np(pthread_self(), "%s", name); + #else + pthread_setname_np(pthread_self(), name); + #endif + #elif HAVE_PTHREAD_SET_NAME_NP + pthread_set_name_np(pthread_self(), name); + #elif defined(__HAIKU__) + /* The docs say the thread name can't be longer than B_OS_NAME_LENGTH. */ + char namebuf[B_OS_NAME_LENGTH]; + SDL_snprintf(namebuf, sizeof (namebuf), "%s", name); + namebuf[sizeof (namebuf) - 1] = '\0'; + rename_thread(find_thread(NULL), namebuf); + #endif + } + + /* NativeClient does not yet support signals.*/ +#if !defined(__NACL__) + /* Mask asynchronous signals for this thread */ + sigemptyset(&mask); + for (i = 0; sig_list[i]; ++i) { + sigaddset(&mask, sig_list[i]); + } + pthread_sigmask(SIG_BLOCK, &mask, 0); +#endif /* !__NACL__ */ + + +#ifdef PTHREAD_CANCEL_ASYNCHRONOUS + /* Allow ourselves to be asynchronously cancelled */ + { + int oldstate; + pthread_setcanceltype(PTHREAD_CANCEL_ASYNCHRONOUS, &oldstate); + } +#endif +} + +SDL_threadID +SDL_ThreadID(void) +{ + return ((SDL_threadID) pthread_self()); +} + +#if __LINUX__ +/* d-bus queries to org.freedesktop.RealtimeKit1. */ +#if SDL_USE_LIBDBUS + +#define RTKIT_DBUS_NODE "org.freedesktop.RealtimeKit1" +#define RTKIT_DBUS_PATH "/org/freedesktop/RealtimeKit1" +#define RTKIT_DBUS_INTERFACE "org.freedesktop.RealtimeKit1" + +static pthread_once_t rtkit_initialize_once = PTHREAD_ONCE_INIT; +static Sint32 rtkit_min_nice_level = -20; + +static void +rtkit_initialize() +{ + SDL_DBusContext *dbus = SDL_DBus_GetContext(); + + /* Try getting minimum nice level: this is often greater than PRIO_MIN (-20). */ + if (!dbus || !SDL_DBus_QueryPropertyOnConnection(dbus->system_conn, RTKIT_DBUS_NODE, RTKIT_DBUS_PATH, RTKIT_DBUS_INTERFACE, "MinNiceLevel", + DBUS_TYPE_INT32, &rtkit_min_nice_level)) { + rtkit_min_nice_level = -20; + } +} + +static SDL_bool +rtkit_setpriority(pid_t thread, int nice_level) +{ + Uint64 ui64 = (Uint64)thread; + Sint32 si32 = (Sint32)nice_level; + SDL_DBusContext *dbus = SDL_DBus_GetContext(); + + pthread_once(&rtkit_initialize_once, rtkit_initialize); + + if (si32 < rtkit_min_nice_level) + si32 = rtkit_min_nice_level; + + if (!dbus || !SDL_DBus_CallMethodOnConnection(dbus->system_conn, + RTKIT_DBUS_NODE, RTKIT_DBUS_PATH, RTKIT_DBUS_INTERFACE, "MakeThreadHighPriority", + DBUS_TYPE_UINT64, &ui64, DBUS_TYPE_INT32, &si32, DBUS_TYPE_INVALID, + DBUS_TYPE_INVALID)) { + return SDL_FALSE; + } + return SDL_TRUE; +} + +#else + +static SDL_bool +rtkit_setpriority(pid_t thread, int nice_level) +{ + return SDL_FALSE; +} + +#endif /* !SDL_USE_LIBDBUS */ + +int +SDL_LinuxSetThreadPriority(Sint64 threadID, int priority) +{ + if (setpriority(PRIO_PROCESS, (id_t)threadID, priority) < 0) { + /* Note that this fails if you're trying to set high priority + and you don't have root permission. BUT DON'T RUN AS ROOT! + + You can grant the ability to increase thread priority by + running the following command on your application binary: + sudo setcap 'cap_sys_nice=eip' <application> + + Let's try setting priority with RealtimeKit... + + README and sample code at: + http://git.0pointer.net/rtkit.git + */ + if (rtkit_setpriority((pid_t)threadID, priority) == SDL_FALSE) { + return SDL_SetError("setpriority() failed"); + } + } + return 0; +} +#endif /* __LINUX__ */ + +int +SDL_SYS_SetThreadPriority(SDL_ThreadPriority priority) +{ +#if __NACL__ + /* FIXME: Setting thread priority does not seem to be supported in NACL */ + return 0; +#elif __LINUX__ + int value; + pid_t thread = syscall(SYS_gettid); + + if (priority == SDL_THREAD_PRIORITY_LOW) { + value = 19; + } else if (priority == SDL_THREAD_PRIORITY_HIGH) { + value = -10; + } else if (priority == SDL_THREAD_PRIORITY_TIME_CRITICAL) { + value = -20; + } else { + value = 0; + } + return SDL_LinuxSetThreadPriority(thread, value); +#else + struct sched_param sched; + int policy; + pthread_t thread = pthread_self(); + + if (pthread_getschedparam(thread, &policy, &sched) != 0) { + return SDL_SetError("pthread_getschedparam() failed"); + } + if (priority == SDL_THREAD_PRIORITY_LOW) { + sched.sched_priority = sched_get_priority_min(policy); + } else if (priority == SDL_THREAD_PRIORITY_TIME_CRITICAL) { + sched.sched_priority = sched_get_priority_max(policy); + } else { + int min_priority = sched_get_priority_min(policy); + int max_priority = sched_get_priority_max(policy); + sched.sched_priority = (min_priority + (max_priority - min_priority) / 2); + if (priority == SDL_THREAD_PRIORITY_HIGH) { + sched.sched_priority += ((max_priority - min_priority) / 4); + } + } + if (pthread_setschedparam(thread, policy, &sched) != 0) { + return SDL_SetError("pthread_setschedparam() failed"); + } + return 0; +#endif /* linux */ +} + +void +SDL_SYS_WaitThread(SDL_Thread * thread) +{ + pthread_join(thread->handle, 0); +} + +void +SDL_SYS_DetachThread(SDL_Thread * thread) +{ + pthread_detach(thread->handle); +} + +/* vi: set ts=4 sw=4 expandtab: */ diff --git a/source/3rd-party/SDL2/src/thread/pthread/SDL_systhread_c.h b/source/3rd-party/SDL2/src/thread/pthread/SDL_systhread_c.h new file mode 100644 index 0000000..898c219 --- /dev/null +++ b/source/3rd-party/SDL2/src/thread/pthread/SDL_systhread_c.h @@ -0,0 +1,27 @@ +/* + Simple DirectMedia Layer + Copyright (C) 1997-2018 Sam Lantinga <slouken@libsdl.org> + + 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. +*/ +#include "../../SDL_internal.h" + +#include <pthread.h> + +typedef pthread_t SYS_ThreadHandle; + +/* vi: set ts=4 sw=4 expandtab: */ diff --git a/source/3rd-party/SDL2/src/thread/pthread/SDL_systls.c b/source/3rd-party/SDL2/src/thread/pthread/SDL_systls.c new file mode 100644 index 0000000..c580595 --- /dev/null +++ b/source/3rd-party/SDL2/src/thread/pthread/SDL_systls.c @@ -0,0 +1,70 @@ +/* + Simple DirectMedia Layer + Copyright (C) 1997-2018 Sam Lantinga <slouken@libsdl.org> + + 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. +*/ +#include "../../SDL_internal.h" +#include "SDL_thread.h" +#include "../SDL_systhread.h" +#include "../SDL_thread_c.h" + +#include <pthread.h> + + +#define INVALID_PTHREAD_KEY ((pthread_key_t)-1) + +static pthread_key_t thread_local_storage = INVALID_PTHREAD_KEY; +static SDL_bool generic_local_storage = SDL_FALSE; + +SDL_TLSData * +SDL_SYS_GetTLSData(void) +{ + if (thread_local_storage == INVALID_PTHREAD_KEY && !generic_local_storage) { + static SDL_SpinLock lock; + SDL_AtomicLock(&lock); + if (thread_local_storage == INVALID_PTHREAD_KEY && !generic_local_storage) { + pthread_key_t storage; + if (pthread_key_create(&storage, NULL) == 0) { + SDL_MemoryBarrierRelease(); + thread_local_storage = storage; + } else { + generic_local_storage = SDL_TRUE; + } + } + SDL_AtomicUnlock(&lock); + } + if (generic_local_storage) { + return SDL_Generic_GetTLSData(); + } + SDL_MemoryBarrierAcquire(); + return (SDL_TLSData *)pthread_getspecific(thread_local_storage); +} + +int +SDL_SYS_SetTLSData(SDL_TLSData *data) +{ + if (generic_local_storage) { + return SDL_Generic_SetTLSData(data); + } + if (pthread_setspecific(thread_local_storage, data) != 0) { + return SDL_SetError("pthread_setspecific() failed"); + } + return 0; +} + +/* vi: set ts=4 sw=4 expandtab: */ |