Mercurial > sdl-ios-xcode
view src/main/epoc/SDL_main.cpp @ 1157:baf35853ad54
Date: Mon, 10 Oct 2005 13:09:32 +0300
From: Tommi Kyntola <tommi.kyntola@ray.fi>
To: sdl@libsdl.org
Subject: [SDL] [RFC] get_ticks broken on linux
It uses gettimeofday to calculate the timedifference.
Gettimeofday returns current time which is seldom monotonous.
This breaks SDL timer subsystem. (time callbacks and all that
get borked when the time difference ms is suddenly ~ 2^32)
I posted a message about this earlier but got no response.
Some thoughts on this matter would be appreciated.
(Or even an explanation for the lack of interest.)
A patch below would use the posix timers that have been around
since posix 93 and do provide a good source of monotonous time
on linux boxes (and on few others too).
The following patch is also availabe at:
http://www.hut.fi/u/tkyntola/SDL-1.2.9-clockfix.patch
It's against 1.2.9, but I can easily rediffit against
the cvs branch is needed.
cheers,
Tommi Kyntola tommi.kyntola@ray.fi
author | Ryan C. Gordon <icculus@icculus.org> |
---|---|
date | Tue, 11 Oct 2005 18:16:12 +0000 |
parents | f6ffac90895c |
children |
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/* SDL - Simple DirectMedia Layer Copyright (C) 1997, 1998, 1999, 2000, 2001, 2002 Sam Lantinga This library is free software; you can redistribute it and/or modify it under the terms of the GNU Library General Public License as published by the Free Software Foundation; either version 2 of the License, or (at your option) any later version. This library is distributed in the hope that it will be useful, but WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU Library General Public License for more details. You should have received a copy of the GNU Library General Public License along with this library; if not, write to the Free Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA Sam Lantinga slouken@libsdl.org */ /* SDL_main.cpp The Epoc executable startup functions Epoc version by Hannu Viitala (hannu.j.viitala@mbnet.fi) */ #include <e32std.h> #include <e32def.h> #include <e32svr.h> #include <e32base.h> #include <estlib.h> #include <stdlib.h> #include <stdio.h> #include <w32std.h> #include <apgtask.h> #include "SDL_error.h" #ifndef EXPORT_C # ifdef __VC32__ # define IMPORT_C __declspec(dllexport) # define EXPORT_C __declspec(dllexport) # endif # ifdef __GCC32__ # define IMPORT_C # define EXPORT_C __declspec(dllexport) # endif #endif #if defined(__WINS__) #include <estw32.h> IMPORT_C void RegisterWsExe(const TDesC &aName); #endif /* The prototype for the application's main() function */ #define main SDL_main extern "C" int main (int argc, char *argv[], char *envp[]); extern "C" void exit (int ret); /* Epoc main function */ GLDEF_C TInt E32Main() { /* Get the clean-up stack */ CTrapCleanup* cleanup = CTrapCleanup::New(); #if defined(__WINS__) /* arrange for access to Win32 stdin/stdout/stderr */ RWin32Stream::StartServer(); #endif /* Arrange for multi-threaded operation */ SpawnPosixServerThread(); /* Get args and environment */ int argc=0; char** argv=0; char** envp=0; __crt0(argc,argv,envp); #if defined(__WINS__) /* Cause the graphical Window Server to come into existence */ RSemaphore sem; sem.CreateGlobal(_L("WsExeSem"),0); RegisterWsExe(sem.FullName()); #endif /* Start the application! */ /* Create stdlib */ _REENT; /* Set process and thread priority */ RThread currentThread; currentThread.Rename(_L("SdlProgram")); currentThread.SetProcessPriority(EPriorityLow); currentThread.SetPriority(EPriorityMuchLess); /* Call stdlib main */ int ret = main(argc, argv, envp); /* !! process exits here if there is "exit()" in main! */ /* Call exit */ exit(ret); /* !! process exits here! */ /* Free resources and return */ CloseSTDLIB(); delete cleanup; return(KErrNone); } /* Epoc dll entry point */ #if defined(__WINS__) GLDEF_C TInt E32Dll(TDllReason) { return(KErrNone); } EXPORT_C TInt WinsMain(TAny *) { E32Main(); return KErrNone; } #endif