Mercurial > sdl-ios-xcode
view test/testhread.c @ 997:3bf4103b2b89
Date: Sat, 27 Nov 2004 13:35:43 +0100
From: "Martin Bickel"
Subject: [SDL] Patch: fixing uninitilized palette
while running Valgrind over my application I found the following
problem in SDL:
The function MapNto1 allocates SDL_Color colors[256] but does not
initialize it.
SDL_DitherColors is then called which initialized the r, g and b
component, but not the 'unused' component of each color.
When Map1to1 is called from MapNto1, it runs a memcmp on the colors,
which also evaluates the unused component and therefor returns
differences much more often than necessary.
So the 'unused' component of SDL_Color should be initialized. This
patch does this by calling memset for the whole array in MapNto1 .
author | Sam Lantinga <slouken@libsdl.org> |
---|---|
date | Tue, 30 Nov 2004 14:28:20 +0000 |
parents | 74212992fb08 |
children | be9c9c8f6d53 |
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/* Simple test of the SDL threading code */ #include <stdio.h> #include <stdlib.h> #include <signal.h> #include "SDL.h" #include "SDL_thread.h" static int alive = 0; int ThreadFunc(void *data) { printf("Started thread %s: My thread id is %u\n", (char *)data, SDL_ThreadID()); while ( alive ) { printf("Thread '%s' is alive!\n", (char *)data); SDL_Delay(1*1000); } printf("Thread '%s' exiting!\n", (char *)data); return(0); } static void killed(int sig) { printf("Killed with SIGTERM, waiting 5 seconds to exit\n"); SDL_Delay(5*1000); alive = 0; exit(0); } int main(int argc, char *argv[]) { SDL_Thread *thread; /* Load the SDL library */ if ( SDL_Init(0) < 0 ) { fprintf(stderr, "Couldn't initialize SDL: %s\n",SDL_GetError()); exit(1); } atexit(SDL_Quit); alive = 1; thread = SDL_CreateThread(ThreadFunc, "#1"); if ( thread == NULL ) { fprintf(stderr, "Couldn't create thread: %s\n", SDL_GetError()); exit(1); } SDL_Delay(5*1000); printf("Waiting for thread #1\n"); alive = 0; SDL_WaitThread(thread, NULL); alive = 1; thread = SDL_CreateThread(ThreadFunc, "#2"); if ( thread == NULL ) { fprintf(stderr, "Couldn't create thread: %s\n", SDL_GetError()); exit(1); } SDL_Delay(5*1000); printf("Killing thread #2\n"); SDL_KillThread(thread); alive = 1; signal(SIGTERM, killed); thread = SDL_CreateThread(ThreadFunc, "#3"); if ( thread == NULL ) { fprintf(stderr, "Couldn't create thread: %s\n", SDL_GetError()); exit(1); } raise(SIGTERM); return(0); /* Never reached */ }