Initial commit

1 files changed, 67 insertions, 0 deletions

diff --git a/contrib/SDL-3.2.8/src/thread/n3ds/SDL_sysmutex.c b/contrib/SDL-3.2.8/src/thread/n3ds/SDL_sysmutex.c
new file mode 100644
index 0000000..0abb9f5
--- /dev/null
+++ b/contrib/SDL-3.2.8/src/thread/n3ds/SDL_sysmutex.c
@@ -0,0 +1,67 @@
+/*
+  Simple DirectMedia Layer
+  Copyright (C) 1997-2025 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_N3DS
+
+// An implementation of mutexes using libctru's RecursiveLock
+
+#include "SDL_sysmutex_c.h"
+
+SDL_Mutex *SDL_CreateMutex(void)
+{
+    SDL_Mutex *mutex = (SDL_Mutex *)SDL_malloc(sizeof(*mutex));
+    if (mutex) {
+        RecursiveLock_Init(&mutex->lock);
+    }
+    return mutex;
+}
+
+void SDL_DestroyMutex(SDL_Mutex *mutex)
+{
+    if (mutex) {
+        SDL_free(mutex);
+    }
+}
+
+void SDL_LockMutex(SDL_Mutex *mutex) SDL_NO_THREAD_SAFETY_ANALYSIS  // clang doesn't know about NULL mutexes
+{
+    if (mutex) {
+        RecursiveLock_Lock(&mutex->lock);
+    }
+}
+
+bool SDL_TryLockMutex(SDL_Mutex *mutex)
+{
+    if (mutex) {
+        return RecursiveLock_TryLock(&mutex->lock);
+    }
+    return true;
+}
+
+void SDL_UnlockMutex(SDL_Mutex *mutex) SDL_NO_THREAD_SAFETY_ANALYSIS // clang doesn't know about NULL mutexes
+{
+    if (mutex) {
+        RecursiveLock_Unlock(&mutex->lock);
+    }
+}
+
+#endif // SDL_THREAD_N3DS