int LLProcessLauncher::launch(void) { // If there was already a process associated with this object, kill it. kill(); orphan(); int result = 0; PROCESS_INFORMATION pinfo; STARTUPINFOA sinfo; memset(&sinfo, 0, sizeof(sinfo)); std::string args = mExecutable; for(int i = 0; i < (int)mLaunchArguments.size(); i++) { args += " "; args += mLaunchArguments[i]; } // So retarded. Windows requires that the second parameter to CreateProcessA be a writable (non-const) string... char *args2 = new char[args.size() + 1]; strcpy(args2, args.c_str()); if( ! CreateProcessA( NULL, args2, NULL, NULL, FALSE, 0, NULL, NULL, &sinfo, &pinfo ) ) { // TODO: do better than returning the OS-specific error code on failure... result = GetLastError(); if(result == 0) { // Make absolutely certain we return a non-zero value on failure. result = -1; } } else { // foo = pinfo.dwProcessId; // get your pid here if you want to use it later on // CloseHandle(pinfo.hProcess); // stops leaks - nothing else mProcessHandle = pinfo.hProcess; CloseHandle(pinfo.hThread); // stops leaks - nothing else } delete[] args2; return result; }
int LLProcessLauncher::launch(void) { // If there was already a process associated with this object, kill it. kill(); orphan(); int result = 0; int current_wd = -1; // create an argv vector for the child process const char ** fake_argv = new const char *[mLaunchArguments.size() + 2]; // 1 for the executable path, 1 for the NULL terminator int i = 0; // add the executable path fake_argv[i++] = mExecutable.c_str(); // and any arguments for(int j=0; j < mLaunchArguments.size(); j++) fake_argv[i++] = mLaunchArguments[j].c_str(); // terminate with a null pointer fake_argv[i] = NULL; if(!mWorkingDir.empty()) { // save the current working directory current_wd = ::open(".", O_RDONLY); // and change to the one the child will be executed in if (::chdir(mWorkingDir.c_str())) { // chdir failed } } // flush all buffers before the child inherits them ::fflush(NULL); pid_t id = vfork(); if(id == 0) { // child process ::execv(mExecutable.c_str(), (char * const *)fake_argv); // If we reach this point, the exec failed. // Use _exit() instead of exit() per the vfork man page. _exit(0); } // parent process if(current_wd >= 0) { // restore the previous working directory if (::fchdir(current_wd)) { // chdir failed } ::close(current_wd); } delete[] fake_argv; mProcessID = id; // At this point, the child process will have been created (since that's how vfork works -- the child borrowed our execution context until it forked) // If the process doesn't exist at this point, the exec failed. if(!isRunning()) { result = -1; } return result; }
int LLProcessLauncher::launch(void) { // If there was already a process associated with this object, kill it. kill(); orphan(); int result = 0; PROCESS_INFORMATION pinfo; STARTUPINFOA sinfo; memset(&sinfo, 0, sizeof(sinfo)); std::string args = mExecutable; for(int i = 0; i < (int)mLaunchArguments.size(); i++) { args += " "; args += mLaunchArguments[i]; } // So retarded. Windows requires that the second parameter to CreateProcessA be a writable (non-const) string... char *args2 = new char[args.size() + 1]; strcpy(args2, args.c_str()); const char * working_directory = 0; if(!mWorkingDir.empty()) working_directory = mWorkingDir.c_str(); if( ! CreateProcessA( NULL, args2, NULL, NULL, FALSE, 0, NULL, working_directory, &sinfo, &pinfo ) ) { result = GetLastError(); LPTSTR error_str = 0; if( FormatMessage( FORMAT_MESSAGE_ALLOCATE_BUFFER | FORMAT_MESSAGE_FROM_SYSTEM, NULL, result, 0, (LPTSTR)&error_str, 0, NULL) != 0) { char message[256]; wcstombs(message, error_str, 256); message[255] = 0; LL_WARNS() << "CreateProcessA failed: " << message << LL_ENDL; LocalFree(error_str); } if(result == 0) { // Make absolutely certain we return a non-zero value on failure. result = -1; } } else { // foo = pinfo.dwProcessId; // get your pid here if you want to use it later on // CloseHandle(pinfo.hProcess); // stops leaks - nothing else mProcessHandle = pinfo.hProcess; CloseHandle(pinfo.hThread); // stops leaks - nothing else } delete[] args2; return result; }
void pTextEdit::setWordWrap(bool wordWrap) { //ES_AUTOHSCROLL cannot be changed after widget creation. //As a result, we must destroy and re-create widget to change this setting. orphan(); }
int LLProcessLauncher::launch(void) { // If there was already a process associated with this object, kill it. kill(); orphan(); int result = 0; int current_wd = -1; // create an argv vector for the child process const char ** fake_argv = new const char *[mLaunchArguments.size() + 2]; // 1 for the executable path, 1 for the NULL terminator int i = 0; // add the executable path fake_argv[i++] = mExecutable.c_str(); // and any arguments for(int j=0; j < mLaunchArguments.size(); j++) fake_argv[i++] = mLaunchArguments[j].c_str(); // terminate with a null pointer fake_argv[i] = NULL; if(!mWorkingDir.empty()) { // save the current working directory current_wd = ::open(".", O_RDONLY); // and change to the one the child will be executed in if (::chdir(mWorkingDir.c_str())) { // chdir failed } } pid_t id; { #ifdef DEBUG_PIPE_CHILD_ERROR_REPORTING // Set up a pipe to the child process for error reporting. apr_file_t* in; apr_file_t* out; LLAPRPool pool; pool.create(); #if(APR_VERSION_MAJOR==1 && APR_VERSION_MINOR>=3 || APR_VERSION_MAJOR>1) apr_status_t status = apr_file_pipe_create_ex(&in, &out, APR_FULL_BLOCK, pool()); #else apr_status_t status = apr_file_pipe_create(&in, &out, pool()); #endif assert(status == APR_SUCCESS); bool success = (status == APR_SUCCESS); if (success) { apr_interval_time_t const timeout = 10000000; // 10 seconds. status = apr_file_pipe_timeout_set(in, timeout); assert(status == APR_SUCCESS); success = (status == APR_SUCCESS); } #endif // DEBUG_PIPE_CHILD_ERROR_REPORTING // flush all buffers before the child inherits them ::fflush(NULL); id = vfork(); if (id == 0) { // child process #ifdef DEBUG_PIPE_CHILD_ERROR_REPORTING // Tell parent process we're about to call execv. write_pipe(out, "CALLING EXECV"); #ifdef _DEBUG char const* display = getenv("DISPLAY"); std::cerr << "Calling ::execv(\"" << mExecutable << '"'; for(int j = 0; j < i; ++j) std::cerr << ", \"" << fake_argv[j] << '"'; std::cerr << ") with DISPLAY=\"" << (display ? display : "NULL") << '"' << std::endl; #endif #endif // DEBUG_PIPE_CHILD_ERROR_REPORTING ::execv(mExecutable.c_str(), (char * const *)fake_argv); #ifdef DEBUG_PIPE_CHILD_ERROR_REPORTING status = APR_FROM_OS_ERROR(apr_get_os_error()); char message[256]; char errbuf[128]; apr_strerror(status, errbuf, sizeof(errbuf)); snprintf(message, sizeof(message), "Child process: execv: %s: %s", mExecutable.c_str(), errbuf); write_pipe(out, message); #ifdef _DEBUG std::cerr << "::execv() failed." << std::endl; #endif #endif // DEBUG_PIPE_CHILD_ERROR_REPORTING // If we reach this point, the exec failed. // Use _exit() instead of exit() per the vfork man page. _exit(0); } // parent process #ifdef DEBUG_PIPE_CHILD_ERROR_REPORTING // Close unused pipe end. apr_file_close(out); if (success) { // Attempt to do error reporting. std::string message = read_pipe(in); success = (message == "CALLING EXECV"); assert(success); if (success) { status = apr_file_pipe_timeout_set(in, 2000000); // Only wait 2 seconds. message = read_pipe(in, true); if (message != "TIMEOUT" && message != "END OF FILE") { // Most likely execv failed. llwarns << message << llendl; assert(false); // Fail in debug mode. } } } // Clean up. apr_file_close(in); #endif // DEBUG_PIPE_CHILD_ERROR_REPORTING } if(current_wd >= 0) { // restore the previous working directory if (::fchdir(current_wd)) { // chdir failed } ::close(current_wd); } delete[] fake_argv; mProcessID = id; // At this point, the child process will have been created (since that's how vfork works -- the child borrowed our execution context until it forked) // If the process doesn't exist at this point, the exec failed. if(!isRunning()) { result = -1; } return result; }