chore(build): revert to sdl2

vendor/sdl-2.30.5/src/thread/pthread/SDL_syscond.c

@@ -0,0 +1,152 @@
+/*
+  Simple DirectMedia Layer
+  Copyright (C) 1997-2024 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_InvalidParamError("cond");
+    }
+
+    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_InvalidParamError("cond");
+    }
+
+    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_InvalidParamError("cond");
+    }
+
+#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 = (long)(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_InvalidParamError("cond");
+    } 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: */

vendor/sdl-2.30.5/src/thread/pthread/SDL_sysmutex.c

@@ -0,0 +1,190 @@
+/*
+  Simple DirectMedia Layer
+  Copyright (C) 1997-2024 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 !(defined(SDL_THREAD_PTHREAD_RECURSIVE_MUTEX) || \
+    defined(SDL_THREAD_PTHREAD_RECURSIVE_MUTEX_NP))
+#define FAKE_RECURSIVE_MUTEX
+#endif
+
+struct SDL_mutex
+{
+    pthread_mutex_t id;
+#ifdef 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);
+#ifdef SDL_THREAD_PTHREAD_RECURSIVE_MUTEX
+        pthread_mutexattr_settype(&attr, PTHREAD_MUTEX_RECURSIVE);
+#elif defined(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) SDL_NO_THREAD_SAFETY_ANALYSIS /* clang doesn't know about NULL mutexes */
+{
+#ifdef FAKE_RECURSIVE_MUTEX
+    pthread_t this_thread;
+#endif
+
+    if (mutex == NULL) {
+        return 0;
+    }
+
+#ifdef 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;
+#ifdef FAKE_RECURSIVE_MUTEX
+    pthread_t this_thread;
+#endif
+
+    if (!mutex) {
+        return 0;
+    }
+
+    retval = 0;
+#ifdef 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) SDL_NO_THREAD_SAFETY_ANALYSIS /* clang doesn't know about NULL mutexes */
+{
+    if (mutex == NULL) {
+        return 0;
+    }
+
+#ifdef 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: */

vendor/sdl-2.30.5/src/thread/pthread/SDL_sysmutex_c.h

@@ -0,0 +1,32 @@
+/*
+  Simple DirectMedia Layer
+  Copyright (C) 1997-2024 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: */

vendor/sdl-2.30.5/src/thread/pthread/SDL_syssem.c

@@ -0,0 +1,206 @@
+/*
+  Simple DirectMedia Layer
+  Copyright (C) 1997-2024 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_InvalidParamError("sem");
+    }
+    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_InvalidParamError("sem");
+    }
+
+    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 = 0;
+#ifdef HAVE_SEM_TIMEDWAIT
+#ifndef HAVE_CLOCK_GETTIME
+    struct timeval now;
+#endif
+    struct timespec ts_timeout;
+#else
+    Uint32 end;
+#endif
+
+    if (!sem) {
+        return SDL_InvalidParamError("sem");
+    }
+
+    /* 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) {
+        SDL_InvalidParamError("sem");
+        return 0;
+    }
+
+    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_InvalidParamError("sem");
+    }
+
+    retval = sem_post(&sem->sem);
+    if (retval < 0) {
+        SDL_SetError("sem_post() failed");
+    }
+    return retval;
+}
+
+#endif /* __MACOSX__ */
+/* vi: set ts=4 sw=4 expandtab: */

vendor/sdl-2.30.5/src/thread/pthread/SDL_systhread.c

@@ -0,0 +1,298 @@
+/*
+  Simple DirectMedia Layer
+  Copyright (C) 1997-2024 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_system.h"
+#include "SDL_hints.h"
+
+#include <pthread.h>
+
+#ifdef HAVE_PTHREAD_NP_H
+#include <pthread_np.h>
+#endif
+
+#include <signal.h>
+#include <errno.h>
+
+#ifdef __LINUX__
+#include <sys/time.h>
+#include <sys/resource.h>
+#include <sys/syscall.h>
+#include <unistd.h>
+
+#include "../../core/linux/SDL_dbus.h"
+#endif /* __LINUX__ */
+
+#if (defined(__LINUX__) || defined(__MACOSX__) || defined(__IPHONEOS__)) && defined(HAVE_DLOPEN)
+#include <dlfcn.h>
+#ifndef RTLD_DEFAULT
+#define RTLD_DEFAULT NULL
+#endif
+#endif
+
+#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
+
+
+#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((SDL_Thread *)data);
+    return NULL;
+}
+
+#if (defined(__MACOSX__) || defined(__IPHONEOS__)) && defined(HAVE_DLOPEN)
+static SDL_bool checked_setname = SDL_FALSE;
+static int (*ppthread_setname_np)(const char *) = NULL;
+#elif defined(__LINUX__) && defined(HAVE_DLOPEN)
+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)
+{
+    pthread_attr_t type;
+
+    /* do this here before any threads exist, so there's no race condition. */
+    #if (defined(__MACOSX__) || defined(__IPHONEOS__) || defined(__LINUX__)) && defined(HAVE_DLOPEN)
+    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, thread->stacksize);
+    }
+
+    /* Create the thread and go! */
+    if (pthread_create(&thread->handle, &type, RunThread, thread) != 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) {
+        #if (defined(__MACOSX__) || defined(__IPHONEOS__) || defined(__LINUX__)) && defined(HAVE_DLOPEN)
+        SDL_assert(checked_setname);
+        if (ppthread_setname_np) {
+            #if defined(__MACOSX__) || defined(__IPHONEOS__)
+            ppthread_setname_np(name);
+#elif defined(__LINUX__)
+            if (ppthread_setname_np(pthread_self(), name) == ERANGE) {
+                char namebuf[16]; /* Limited to 16 char */
+                SDL_strlcpy(namebuf, name, sizeof(namebuf));
+                ppthread_setname_np(pthread_self(), namebuf);
+            }
+#endif
+        }
+#elif defined(HAVE_PTHREAD_SETNAME_NP)
+#if defined(__NETBSD__)
+        pthread_setname_np(pthread_self(), "%s", name);
+#else
+        if (pthread_setname_np(pthread_self(), name) == ERANGE) {
+            char namebuf[16]; /* Limited to 16 char */
+            SDL_strlcpy(namebuf, name, sizeof(namebuf));
+            pthread_setname_np(pthread_self(), namebuf);
+        }
+#endif
+#elif defined(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_strlcpy(namebuf, name, sizeof(namebuf));
+        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();
+}
+
+int SDL_SYS_SetThreadPriority(SDL_ThreadPriority priority)
+{
+#if defined(__NACL__) || defined(__RISCOS__) || defined(__OS2__)
+    /* FIXME: Setting thread priority does not seem to be supported in NACL */
+    return 0;
+#else
+    struct sched_param sched;
+    int policy;
+    int pri_policy;
+    pthread_t thread = pthread_self();
+    const char *policyhint = SDL_GetHint(SDL_HINT_THREAD_PRIORITY_POLICY);
+    const SDL_bool timecritical_realtime_hint = SDL_GetHintBoolean(SDL_HINT_THREAD_FORCE_REALTIME_TIME_CRITICAL, SDL_FALSE);
+
+    if (pthread_getschedparam(thread, &policy, &sched) != 0) {
+        return SDL_SetError("pthread_getschedparam() failed");
+    }
+
+    /* Higher priority levels may require changing the pthread scheduler policy
+     * for the thread.  SDL will make such changes by default but there is
+     * also a hint allowing that behavior to be overridden. */
+    switch (priority) {
+    case SDL_THREAD_PRIORITY_LOW:
+    case SDL_THREAD_PRIORITY_NORMAL:
+        pri_policy = SCHED_OTHER;
+        break;
+    case SDL_THREAD_PRIORITY_HIGH:
+    case SDL_THREAD_PRIORITY_TIME_CRITICAL:
+#if defined(__MACOSX__) || defined(__IPHONEOS__) || defined(__TVOS__)
+        /* Apple requires SCHED_RR for high priority threads */
+        pri_policy = SCHED_RR;
+        break;
+#else
+        pri_policy = SCHED_OTHER;
+        break;
+#endif
+    default:
+        pri_policy = policy;
+        break;
+    }
+
+    if (timecritical_realtime_hint && priority == SDL_THREAD_PRIORITY_TIME_CRITICAL) {
+        pri_policy = SCHED_RR;
+    }
+
+    if (policyhint) {
+        if (SDL_strcmp(policyhint, "current") == 0) {
+            /* Leave current thread scheduler policy unchanged */
+        } else if (SDL_strcmp(policyhint, "other") == 0) {
+            policy = SCHED_OTHER;
+        } else if (SDL_strcmp(policyhint, "rr") == 0) {
+            policy = SCHED_RR;
+        } else if (SDL_strcmp(policyhint, "fifo") == 0) {
+            policy = SCHED_FIFO;
+        } else {
+            policy = pri_policy;
+        }
+    } else {
+        policy = pri_policy;
+    }
+
+#ifdef __LINUX__
+    {
+        pid_t linuxTid = syscall(SYS_gettid);
+        return SDL_LinuxSetThreadPriorityAndPolicy(linuxTid, priority, policy);
+    }
+#else
+    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);
+
+#if defined(__MACOSX__) || defined(__IPHONEOS__) || defined(__TVOS__)
+        if (min_priority == 15 && max_priority == 47) {
+            /* Apple has a specific set of thread priorities */
+            if (priority == SDL_THREAD_PRIORITY_HIGH) {
+                sched.sched_priority = 45;
+            } else {
+                sched.sched_priority = 37;
+            }
+        } else
+#endif /* __MACOSX__ || __IPHONEOS__ || __TVOS__ */
+        {
+            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 */
+#endif /* #if __NACL__ || __RISCOS__ */
+}
+
+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: */

vendor/sdl-2.30.5/src/thread/pthread/SDL_systhread_c.h

@@ -0,0 +1,27 @@
+/*
+  Simple DirectMedia Layer
+  Copyright (C) 1997-2024 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: */

vendor/sdl-2.30.5/src/thread/pthread/SDL_systls.c

@@ -0,0 +1,67 @@
+/*
+  Simple DirectMedia Layer
+  Copyright (C) 1997-2024 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: */