kc3-lang/SDL/visualtest/src/linux

Branch : - branch - v2.28 - tag -

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  Commit

• Author : Philipp Wiesemann
  Date : 2015-06-21 17:33:46
  Hash : 0e45984f
  Message : Fixed crash if initialization of EGL failed but was tried again later. The internal function SDL_EGL_LoadLibrary() did not delete and remove a mostly uninitialized data structure if loading the library first failed. A later try to use EGL then skipped initialization and assumed it was previously successful because the data structure now already existed. This led to at least one crash in the internal function SDL_EGL_ChooseConfig() because a NULL pointer was dereferenced to make a call to eglBindAPI().

• linux_process.c

• /* See COPYING.txt for the full license governing this code. */
  /**
   *  \file linux_process.c
   * 
   *  Source file for the process API on linux.
   */
  
  
  #include <SDL.h>
  #include <SDL_test.h>
  #include <sys/types.h>
  #include <sys/wait.h>
  #include <unistd.h>
  #include <errno.h>
  
  #include "SDL_visualtest_process.h"
  #include "SDL_visualtest_harness_argparser.h"
  #include "SDL_visualtest_parsehelper.h"
  
  #if defined(__LINUX__)
  
  static void
  LogLastError(char* str)
  {
      char* error = (char*)strerror(errno);
      if(!str || !error)
      	return;
      SDLTest_LogError("%s: %s", str, error);
  }
  
  int
  SDL_LaunchProcess(char* file, char* args, SDL_ProcessInfo* pinfo)
  {
      pid_t pid;
      char** argv;
  
      if(!file)
      {
          SDLTest_LogError("file argument cannot be NULL");
          return 0;
      }
      if(!pinfo)
      {
          SDLTest_LogError("pinfo cannot be NULL");
          return 0;
      }
      pid = fork();
      if(pid == -1)
      {
          LogLastError("fork() failed");
          return 0;
      }
      else if(pid == 0)
      {
          /* parse the arguments string */
          argv = SDLVisualTest_ParseArgsToArgv(args);
          argv[0] = file;
          execv(file, argv);
          LogLastError("execv() failed");
          return 0;
      }
      else
      {
          pinfo->pid = pid;
          return 1;
      }
  
      /* never executed */
      return 0;
  }
  
  int
  SDL_GetProcessExitStatus(SDL_ProcessInfo* pinfo, SDL_ProcessExitStatus* ps)
  {
      int success, status;
      if(!pinfo)
      {
          SDLTest_LogError("pinfo argument cannot be NULL");
          return 0;
      }
      if(!ps)
      {
          SDLTest_LogError("ps argument cannot be NULL");
          return 0;
      }
      success = waitpid(pinfo->pid, &status, WNOHANG);
      if(success == -1)
      {
          LogLastError("waitpid() failed");
          return 0;
      }
      else if(success == 0)
      {
          ps->exit_status = -1;
          ps->exit_success = 1;
      }
      else
      {
          ps->exit_success = WIFEXITED(status);
          ps->exit_status = WEXITSTATUS(status);
      }
      return 1;
  }
  
  int
  SDL_IsProcessRunning(SDL_ProcessInfo* pinfo)
  {
      int success;
  
      if(!pinfo)
      {
          SDLTest_LogError("pinfo cannot be NULL");
          return -1;
      }
  
      success = kill(pinfo->pid, 0);
      if(success == -1)
      {
          if(errno == ESRCH) /* process is not running */
              return 0;
          else
          {
              LogLastError("kill() failed");
              return -1;
          }
      }
      return 1;
  }
  
  int
  SDL_QuitProcess(SDL_ProcessInfo* pinfo, SDL_ProcessExitStatus* ps)
  {
      int success, status;
  
      if(!pinfo)
      {
          SDLTest_LogError("pinfo argument cannot be NULL");
          return 0;
      }
      if(!ps)
      {
          SDLTest_LogError("ps argument cannot be NULL");
          return 0;
      }
  
      success = kill(pinfo->pid, SIGQUIT);
      if(success == -1)
      {
          LogLastError("kill() failed");
          return 0;
      }
  
      success = waitpid(pinfo->pid, &status, 0);
      if(success == -1)
      {
          LogLastError("waitpid() failed");
          return 0;
      }
  
      ps->exit_success = WIFEXITED(status);
      ps->exit_status = WEXITSTATUS(status);
      return 1;
  }
  
  int
  SDL_KillProcess(SDL_ProcessInfo* pinfo, SDL_ProcessExitStatus* ps)
  {
      int success, status;
  
      if(!pinfo)
      {
          SDLTest_LogError("pinfo argument cannot be NULL");
          return 0;
      }
      if(!ps)
      {
          SDLTest_LogError("ps argument cannot be NULL");
          return 0;
      }
  
      success = kill(pinfo->pid, SIGKILL);
      if(success == -1)
      {
          LogLastError("kill() failed");
          return 0;
      }
      success = waitpid(pinfo->pid, &status, 0);
      if(success == -1)
      {
          LogLastError("waitpid() failed");
          return 0;
      }
  
      ps->exit_success = WIFEXITED(status);
      ps->exit_status = WEXITSTATUS(status);
      return 1;
  }
  
  #endif