kc3-lang/SDL/visualtest/src/linux/linux_process.c

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• Hash : 8a355116
  Author :
  Date : 2021-12-21T20:01:02
  

  silence -Wwrite-strings in visualtest

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• visualtest/src/linux/linux_process.c

• /* See LICENSE.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 "SDL_visualtest_process.h"
  #include "SDL_visualtest_harness_argparser.h"
  #include "SDL_visualtest_parsehelper.h"
  
  #if defined(__LINUX__)
  #include <sys/types.h>
  #include <sys/wait.h>
  #include <unistd.h>
  #include <errno.h>
  
  static void
  LogLastError(const char* str)
  {
      const char* error = 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;
  }
  
  /* each window of the process will have a screenshot taken. The file name will be
     prefix-i.png for the i'th window. */
  int
  SDLVisualTest_ScreenshotProcess(SDL_ProcessInfo* pinfo, char* prefix)
  {
      SDLTest_LogError("Screenshot process not implemented");
      return 0;
  }
  
  #endif
  

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