early-access version 1617

2021-04-20 21:40:33 +02:00
parent 242b6f6b49
commit f46563104f
510 changed files with 141726 additions and 62846 deletions
@@ -0,0 +1,133 @@
+/*
+  Simple DirectMedia Layer
+  Copyright (C) 1997-2020 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"
+
+#if SDL_THREAD_OS2
+
+/* Thread management routines for SDL */
+
+#include "SDL_thread.h"
+#include "../SDL_systhread.h"
+#include "../SDL_thread_c.h"
+#include "../SDL_systhread.h"
+#include "SDL_systls_c.h"
+#include "../../core/os2/SDL_os2.h"
+#ifndef SDL_PASSED_BEGINTHREAD_ENDTHREAD
+#error This source only adjusted for SDL_PASSED_BEGINTHREAD_ENDTHREAD
+#endif
+
+#define INCL_DOSPROCESS
+#define INCL_DOSERRORS
+#include <os2.h>
+#include <process.h>
+
+
+static void RunThread(void *data)
+{
+    SDL_Thread *thread = (SDL_Thread *) data;
+    pfnSDL_CurrentEndThread pfnEndThread = (pfnSDL_CurrentEndThread) thread->endfunc;
+
+    if (ppSDLTLSData != NULL)
+        *ppSDLTLSData = NULL;
+
+    SDL_RunThread(thread);
+
+    if (pfnEndThread != NULL)
+        pfnEndThread();
+}
+
+int
+SDL_SYS_CreateThread(SDL_Thread * thread,
+                     pfnSDL_CurrentBeginThread pfnBeginThread,
+                     pfnSDL_CurrentEndThread pfnEndThread)
+{
+    if (thread->stacksize == 0)
+        thread->stacksize = 65536;
+
+    if (pfnBeginThread) {
+        /* Save the function which we will have to call to clear the RTL of calling app! */
+        thread->endfunc = pfnEndThread;
+        /* Start the thread using the runtime library of calling app! */
+        thread->handle = (SYS_ThreadHandle)
+                            pfnBeginThread(RunThread, NULL, thread->stacksize, thread);
+    } else {
+        thread->endfunc = _endthread;
+        thread->handle = (SYS_ThreadHandle)
+                            _beginthread(RunThread, NULL, thread->stacksize, thread);
+    }
+
+    if (thread->handle == -1)
+        return SDL_SetError("Not enough resources to create thread");
+
+    return 0;
+}
+
+void
+SDL_SYS_SetupThread(const char *name)
+{
+    /* nothing. */
+}
+
+SDL_threadID
+SDL_ThreadID(void)
+{
+    PTIB  tib;
+    PPIB  pib;
+
+    DosGetInfoBlocks(&tib, &pib);
+    return tib->tib_ptib2->tib2_ultid;
+}
+
+int
+SDL_SYS_SetThreadPriority(SDL_ThreadPriority priority)
+{
+    ULONG ulRC;
+
+    ulRC = DosSetPriority(PRTYS_THREAD,
+                          (priority < SDL_THREAD_PRIORITY_NORMAL)? PRTYC_IDLETIME :
+                           (priority > SDL_THREAD_PRIORITY_NORMAL)? PRTYC_TIMECRITICAL :
+                            PRTYC_REGULAR,
+                          0, 0);
+    if (ulRC != NO_ERROR)
+        return SDL_SetError("DosSetPriority() failed, rc = %u", ulRC);
+
+    return 0;
+}
+
+void
+SDL_SYS_WaitThread(SDL_Thread * thread)
+{
+    ULONG ulRC = DosWaitThread((PTID)&thread->handle, DCWW_WAIT);
+
+    if (ulRC != NO_ERROR) {
+        debug_os2("DosWaitThread() failed, rc = %u", ulRC);
+    }
+}
+
+void
+SDL_SYS_DetachThread(SDL_Thread * thread)
+{
+    /* nothing. */
+}
+
+#endif /* SDL_THREAD_OS2 */
+
+/* vi: set ts=4 sw=4 expandtab: */