kc3-lang/SDL/test/testlock.c

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• Hash : b8d85c69
  Author :
  Date : 2022-11-30T12:51:59
  

  Update for SDL3 coding style (#6717)
  
  I updated .clang-format and ran clang-format 14 over the src and test directories to standardize the code base.
  
  In general I let clang-format have it's way, and added markup to prevent formatting of code that would break or be completely unreadable if formatted.
  
  The script I ran for the src directory is added as build-scripts/clang-format-src.sh
  
  This fixes:
  #6592
  #6593
  #6594
  
  (cherry picked from commit 5750bcb174300011b91d1de20edb288fcca70f8c)
  

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• test/testlock.c

• /*
    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.
  */
  
  /* Test the thread and mutex locking functions
     Also exercises the system's signal/thread interaction
  */
  
  #include <signal.h>
  #include <stdio.h>
  #include <stdlib.h> /* for atexit() */
  
  #include "SDL.h"
  
  static SDL_mutex *mutex = NULL;
  static SDL_threadID mainthread;
  static SDL_Thread *threads[6];
  static SDL_atomic_t doterminate;
  
  /*
   * SDL_Quit() shouldn't be used with atexit() directly because
   *  calling conventions may differ...
   */
  static void
  SDL_Quit_Wrapper(void)
  {
      SDL_Quit();
  }
  
  void printid(void)
  {
      SDL_Log("Process %lu:  exiting\n", SDL_ThreadID());
  }
  
  void terminate(int sig)
  {
      signal(SIGINT, terminate);
      SDL_AtomicSet(&doterminate, 1);
  }
  
  void closemutex(int sig)
  {
      SDL_threadID id = SDL_ThreadID();
      int i;
      SDL_Log("Process %lu:  Cleaning up...\n", id == mainthread ? 0 : id);
      SDL_AtomicSet(&doterminate, 1);
      for (i = 0; i < 6; ++i) {
          SDL_WaitThread(threads[i], NULL);
      }
      SDL_DestroyMutex(mutex);
      exit(sig);
  }
  
  int SDLCALL
  Run(void *data)
  {
      if (SDL_ThreadID() == mainthread) {
          signal(SIGTERM, closemutex);
      }
      while (!SDL_AtomicGet(&doterminate)) {
          SDL_Log("Process %lu ready to work\n", SDL_ThreadID());
          if (SDL_LockMutex(mutex) < 0) {
              SDL_LogError(SDL_LOG_CATEGORY_APPLICATION, "Couldn't lock mutex: %s", SDL_GetError());
              exit(1);
          }
          SDL_Log("Process %lu, working!\n", SDL_ThreadID());
          SDL_Delay(1 * 1000);
          SDL_Log("Process %lu, done!\n", SDL_ThreadID());
          if (SDL_UnlockMutex(mutex) < 0) {
              SDL_LogError(SDL_LOG_CATEGORY_APPLICATION, "Couldn't unlock mutex: %s", SDL_GetError());
              exit(1);
          }
          /* If this sleep isn't done, then threads may starve */
          SDL_Delay(10);
      }
      if (SDL_ThreadID() == mainthread && SDL_AtomicGet(&doterminate)) {
          SDL_Log("Process %lu:  raising SIGTERM\n", SDL_ThreadID());
          raise(SIGTERM);
      }
      return 0;
  }
  
  int main(int argc, char *argv[])
  {
      int i;
      int maxproc = 6;
  
      /* Enable standard application logging */
      SDL_LogSetPriority(SDL_LOG_CATEGORY_APPLICATION, SDL_LOG_PRIORITY_INFO);
  
      /* Load the SDL library */
      if (SDL_Init(0) < 0) {
          SDL_LogError(SDL_LOG_CATEGORY_APPLICATION, "%s\n", SDL_GetError());
          exit(1);
      }
      atexit(SDL_Quit_Wrapper);
  
      SDL_AtomicSet(&doterminate, 0);
  
      if ((mutex = SDL_CreateMutex()) == NULL) {
          SDL_LogError(SDL_LOG_CATEGORY_APPLICATION, "Couldn't create mutex: %s\n", SDL_GetError());
          exit(1);
      }
  
      mainthread = SDL_ThreadID();
      SDL_Log("Main thread: %lu\n", mainthread);
      atexit(printid);
      for (i = 0; i < maxproc; ++i) {
          char name[64];
          SDL_snprintf(name, sizeof(name), "Worker%d", i);
          if ((threads[i] = SDL_CreateThread(Run, name, NULL)) == NULL) {
              SDL_LogError(SDL_LOG_CATEGORY_APPLICATION, "Couldn't create thread!\n");
          }
      }
      signal(SIGINT, terminate);
      Run(NULL);
  
      return 0; /* Never reached */
  }
  

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