linux_process.c
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/* 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