Merge commit 'dec0d4ec4153bf9fc2b78ae6c2df45b6ea8dde7a' as 'external/sdl/SDL'

external/sdl/SDL/src/thread/ps2/SDL_systhread.c

@@ -0,0 +1,135 @@
+/*
+  Simple DirectMedia Layer
+  Copyright (C) 1997-2023 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"
+
+#ifdef SDL_THREAD_PS2
+
+/* PS2 thread management routines for SDL */
+
+#include <stdio.h>
+#include <stdlib.h>
+
+#include "../SDL_systhread.h"
+#include "../SDL_thread_c.h"
+#include <kernel.h>
+
+static void FinishThread(SDL_Thread *thread)
+{
+    ee_thread_status_t info;
+    int res;
+
+    res = ReferThreadStatus(thread->handle, &info);
+    TerminateThread(thread->handle);
+    DeleteThread(thread->handle);
+    DeleteSema((int)thread->endfunc);
+
+    if (res > 0) {
+        SDL_free(info.stack);
+    }
+}
+
+static int childThread(void *arg)
+{
+    SDL_Thread *thread = (SDL_Thread *)arg;
+    int res = thread->userfunc(thread->userdata);
+    SignalSema((int)thread->endfunc);
+    return res;
+}
+
+int SDL_SYS_CreateThread(SDL_Thread *thread)
+{
+    ee_thread_status_t status;
+    ee_thread_t eethread;
+    ee_sema_t sema;
+    size_t stack_size;
+    int priority = 32;
+
+    /* Set priority of new thread to the same as the current thread */
+    // status.size = sizeof(ee_thread_t);
+    if (ReferThreadStatus(GetThreadId(), &status) == 0) {
+        priority = status.current_priority;
+    }
+
+    stack_size = thread->stacksize ? ((int)thread->stacksize) : 0x1800;
+
+    /* Create EE Thread */
+    eethread.attr = 0;
+    eethread.option = 0;
+    eethread.func = &childThread;
+    eethread.stack = SDL_malloc(stack_size);
+    eethread.stack_size = stack_size;
+    eethread.gp_reg = &_gp;
+    eethread.initial_priority = priority;
+    thread->handle = CreateThread(&eethread);
+
+    if (thread->handle < 0) {
+        return SDL_SetError("CreateThread() failed");
+    }
+
+    // Prepare el semaphore for the ending function
+    sema.init_count = 0;
+    sema.max_count = 1;
+    sema.option = 0;
+    thread->endfunc = (void *)CreateSema(&sema);
+
+    return StartThread(thread->handle, thread);
+}
+
+void SDL_SYS_SetupThread(const char *name)
+{
+    /* Do nothing. */
+}
+
+SDL_threadID SDL_ThreadID(void)
+{
+    return (SDL_threadID)GetThreadId();
+}
+
+void SDL_SYS_WaitThread(SDL_Thread *thread)
+{
+    WaitSema((int)thread->endfunc);
+    ReleaseWaitThread(thread->handle);
+    FinishThread(thread);
+}
+
+void SDL_SYS_DetachThread(SDL_Thread *thread)
+{
+    /* Do nothing. */
+}
+
+int SDL_SYS_SetThreadPriority(SDL_ThreadPriority priority)
+{
+    int value;
+
+    if (priority == SDL_THREAD_PRIORITY_LOW) {
+        value = 111;
+    } else if (priority == SDL_THREAD_PRIORITY_HIGH) {
+        value = 32;
+    } else if (priority == SDL_THREAD_PRIORITY_TIME_CRITICAL) {
+        value = 16;
+    } else {
+        value = 50;
+    }
+
+    return ChangeThreadPriority(GetThreadId(), value);
+}
+
+#endif /* SDL_THREAD_PS2 */