/* * Copyright 2002-2019 Intel Corporation. * * This software is provided to you as Sample Source Code as defined in the accompanying * End User License Agreement for the Intel(R) Software Development Products ("Agreement") * section 1.L. * * This software and the related documents are provided as is, with no express or implied * warranties, other than those that are expressly stated in the License. */ #include #include #include #include #include #include #include extern char **environ; using std::string; using std::cout; using std::endl; using std::cerr; //Wait for a process completion //Verify it returned the expected exit code int main(int argc, char * argv[]) { posix_spawnattr_t attr; posix_spawn_file_actions_t file_actions; pid_t pid; int pip[2]; const char* appArgv[] = { argv[1], "/dev/stdin", "/dev/stdout", NULL }; if (0 != pipe(pip)) { cout << "pipe failed: " << errno << endl; return 1; } posix_spawn_file_actions_init(&file_actions); posix_spawn_file_actions_addclose(&file_actions, 0); posix_spawn_file_actions_addclose(&file_actions, pip[1]); posix_spawn_file_actions_adddup2(&file_actions, pip[0], 0); posix_spawnattr_init(&attr); int err = posix_spawn(&pid, argv[1], &file_actions, &attr, (char* const*)appArgv, environ); if (err != 0) { // child process cout << "posix_spawn failed with errno " << err << endl; } else { int status; close(pip[0]); write(pip[1], "OK\n", 3); close(pip[1]); waitpid(pid, &status, 0); if (status !=0) cout << "Parent report: Child process failed. Status of the child process is "<< WEXITSTATUS(status) << endl; else cout << "Parent report: Child process exited successfully" << endl; } posix_spawnattr_destroy(&attr); posix_spawn_file_actions_destroy(&file_actions); return 0; }