update sdl to https://github.com/libsdl-org/SDL 22March 2022

Engine/lib/sdl/src/thread/generic/SDL_syscond.c

@@ -1,6 +1,6 @@
 /*
   Simple DirectMedia Layer
-  Copyright (C) 1997-2020 Sam Lantinga <slouken@libsdl.org>
+  Copyright (C) 1997-2022 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
@@ -28,41 +28,57 @@
 
 #include "SDL_thread.h"
 
-struct SDL_cond
+#include "../generic/SDL_syscond_c.h"
+
+/* If two implementations are to be compiled into SDL (the active one
+ * will be chosen at runtime), the function names need to be
+ * suffixed
+ */
+#if !SDL_THREAD_GENERIC_COND_SUFFIX
+#define SDL_CreateCond_generic      SDL_CreateCond
+#define SDL_DestroyCond_generic     SDL_DestroyCond
+#define SDL_CondSignal_generic      SDL_CondSignal
+#define SDL_CondBroadcast_generic   SDL_CondBroadcast
+#define SDL_CondWait_generic        SDL_CondWait
+#define SDL_CondWaitTimeout_generic SDL_CondWaitTimeout
+#endif
+
+typedef struct SDL_cond_generic
 {
     SDL_mutex *lock;
     int waiting;
     int signals;
     SDL_sem *wait_sem;
     SDL_sem *wait_done;
-};
+} SDL_cond_generic;
 
 /* Create a condition variable */
 SDL_cond *
-SDL_CreateCond(void)
+SDL_CreateCond_generic(void)
 {
-    SDL_cond *cond;
+    SDL_cond_generic *cond;
 
-    cond = (SDL_cond *) SDL_malloc(sizeof(SDL_cond));
+    cond = (SDL_cond_generic *) SDL_malloc(sizeof(SDL_cond_generic));
     if (cond) {
         cond->lock = SDL_CreateMutex();
         cond->wait_sem = SDL_CreateSemaphore(0);
         cond->wait_done = SDL_CreateSemaphore(0);
         cond->waiting = cond->signals = 0;
         if (!cond->lock || !cond->wait_sem || !cond->wait_done) {
-            SDL_DestroyCond(cond);
+            SDL_DestroyCond_generic((SDL_cond *)cond);
             cond = NULL;
         }
     } else {
         SDL_OutOfMemory();
     }
-    return (cond);
+    return (SDL_cond *)cond;
 }
 
 /* Destroy a condition variable */
 void
-SDL_DestroyCond(SDL_cond * cond)
+SDL_DestroyCond_generic(SDL_cond * _cond)
 {
+    SDL_cond_generic *cond = (SDL_cond_generic *)_cond;
     if (cond) {
         if (cond->wait_sem) {
             SDL_DestroySemaphore(cond->wait_sem);
@@ -79,10 +95,11 @@ SDL_DestroyCond(SDL_cond * cond)
 
 /* Restart one of the threads that are waiting on the condition variable */
 int
-SDL_CondSignal(SDL_cond * cond)
+SDL_CondSignal_generic(SDL_cond * _cond)
 {
+    SDL_cond_generic *cond = (SDL_cond_generic *)_cond;
     if (!cond) {
-        return SDL_SetError("Passed a NULL condition variable");
+        return SDL_InvalidParamError("cond");
     }
 
     /* If there are waiting threads not already signalled, then
@@ -103,10 +120,11 @@ SDL_CondSignal(SDL_cond * cond)
 
 /* Restart all threads that are waiting on the condition variable */
 int
-SDL_CondBroadcast(SDL_cond * cond)
+SDL_CondBroadcast_generic(SDL_cond * _cond)
 {
+    SDL_cond_generic *cond = (SDL_cond_generic *)_cond;
     if (!cond) {
-        return SDL_SetError("Passed a NULL condition variable");
+        return SDL_InvalidParamError("cond");
     }
 
     /* If there are waiting threads not already signalled, then
@@ -157,12 +175,13 @@ Thread B:
     SDL_UnlockMutex(lock);
  */
 int
-SDL_CondWaitTimeout(SDL_cond * cond, SDL_mutex * mutex, Uint32 ms)
+SDL_CondWaitTimeout_generic(SDL_cond * _cond, SDL_mutex * mutex, Uint32 ms)
 {
+    SDL_cond_generic *cond = (SDL_cond_generic *)_cond;
     int retval;
 
     if (!cond) {
-        return SDL_SetError("Passed a NULL condition variable");
+        return SDL_InvalidParamError("cond");
     }
 
     /* Obtain the protection mutex, and increment the number of waiters.
@@ -212,9 +231,9 @@ SDL_CondWaitTimeout(SDL_cond * cond, SDL_mutex * mutex, Uint32 ms)
 
 /* Wait on the condition variable forever */
 int
-SDL_CondWait(SDL_cond * cond, SDL_mutex * mutex)
+SDL_CondWait_generic(SDL_cond * cond, SDL_mutex * mutex)
 {
-    return SDL_CondWaitTimeout(cond, mutex, SDL_MUTEX_MAXWAIT);
+    return SDL_CondWaitTimeout_generic(cond, mutex, SDL_MUTEX_MAXWAIT);
 }
 
 /* vi: set ts=4 sw=4 expandtab: */

Engine/lib/sdl/src/thread/generic/SDL_syscond_c.h

@@ -0,0 +1,42 @@
+/*
+  Simple DirectMedia Layer
+  Copyright (C) 1997-2022 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"
+
+#ifndef SDL_syscond_generic_h_
+#define SDL_syscond_generic_h_
+
+#if SDL_THREAD_GENERIC_COND_SUFFIX
+
+SDL_cond * SDL_CreateCond_generic(void);
+void SDL_DestroyCond_generic(SDL_cond * cond);
+int SDL_CondSignal_generic(SDL_cond * cond);
+int SDL_CondBroadcast_generic(SDL_cond * cond);
+int SDL_CondWait_generic(SDL_cond * cond, SDL_mutex * mutex);
+int SDL_CondWaitTimeout_generic(SDL_cond * cond,
+                                SDL_mutex * mutex, Uint32 ms);
+
+#endif /* SDL_THREAD_GENERIC_COND_SUFFIX */
+
+#endif /* SDL_syscond_generic_h_ */
+
+/* vi: set ts=4 sw=4 expandtab: */

Engine/lib/sdl/src/thread/generic/SDL_sysmutex.c

@@ -1,6 +1,6 @@
 /*
   Simple DirectMedia Layer
-  Copyright (C) 1997-2020 Sam Lantinga <slouken@libsdl.org>
+  Copyright (C) 1997-2022 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
@@ -78,7 +78,7 @@ SDL_LockMutex(SDL_mutex * mutex)
     SDL_threadID this_thread;
 
     if (mutex == NULL) {
-        return SDL_SetError("Passed a NULL mutex");
+        return SDL_InvalidParamError("mutex");
     }
 
     this_thread = SDL_ThreadID();
@@ -109,7 +109,7 @@ SDL_TryLockMutex(SDL_mutex * mutex)
     SDL_threadID this_thread;
 
     if (mutex == NULL) {
-        return SDL_SetError("Passed a NULL mutex");
+        return SDL_InvalidParamError("mutex");
     }
 
     this_thread = SDL_ThreadID();
@@ -139,7 +139,7 @@ SDL_mutexV(SDL_mutex * mutex)
     return 0;
 #else
     if (mutex == NULL) {
-        return SDL_SetError("Passed a NULL mutex");
+        return SDL_InvalidParamError("mutex");
     }
 
     /* If we don't own the mutex, we can't unlock it */

Engine/lib/sdl/src/thread/generic/SDL_sysmutex_c.h

@@ -1,6 +1,6 @@
 /*
   Simple DirectMedia Layer
-  Copyright (C) 1997-2020 Sam Lantinga <slouken@libsdl.org>
+  Copyright (C) 1997-2022 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

Engine/lib/sdl/src/thread/generic/SDL_syssem.c

@@ -1,6 +1,6 @@
 /*
   Simple DirectMedia Layer
-  Copyright (C) 1997-2020 Sam Lantinga <slouken@libsdl.org>
+  Copyright (C) 1997-2022 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
@@ -132,7 +132,7 @@ SDL_SemTryWait(SDL_sem * sem)
     int retval;
 
     if (!sem) {
-        return SDL_SetError("Passed a NULL semaphore");
+        return SDL_InvalidParamError("sem");
     }
 
     retval = SDL_MUTEX_TIMEDOUT;
@@ -152,7 +152,7 @@ SDL_SemWaitTimeout(SDL_sem * sem, Uint32 timeout)
     int retval;
 
     if (!sem) {
-        return SDL_SetError("Passed a NULL semaphore");
+        return SDL_InvalidParamError("sem");
     }
 
     /* A timeout of 0 is an easy case */
@@ -200,7 +200,7 @@ int
 SDL_SemPost(SDL_sem * sem)
 {
     if (!sem) {
-        return SDL_SetError("Passed a NULL semaphore");
+        return SDL_InvalidParamError("sem");
     }
 
     SDL_LockMutex(sem->count_lock);

Engine/lib/sdl/src/thread/generic/SDL_systhread.c

@@ -1,6 +1,6 @@
 /*
   Simple DirectMedia Layer
-  Copyright (C) 1997-2020 Sam Lantinga <slouken@libsdl.org>
+  Copyright (C) 1997-2022 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

Engine/lib/sdl/src/thread/generic/SDL_systhread_c.h

@@ -1,6 +1,6 @@
 /*
   Simple DirectMedia Layer
-  Copyright (C) 1997-2020 Sam Lantinga <slouken@libsdl.org>
+  Copyright (C) 1997-2022 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

Engine/lib/sdl/src/thread/generic/SDL_systls.c

@@ -1,6 +1,6 @@
 /*
   Simple DirectMedia Layer
-  Copyright (C) 1997-2020 Sam Lantinga <slouken@libsdl.org>
+  Copyright (C) 1997-2022 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