| /* |
| * |
| * Copyright 2016 gRPC authors. |
| * |
| * Licensed under the Apache License, Version 2.0 (the "License"); |
| * you may not use this file except in compliance with the License. |
| * You may obtain a copy of the License at |
| * |
| * http://www.apache.org/licenses/LICENSE-2.0 |
| * |
| * Unless required by applicable law or agreed to in writing, software |
| * distributed under the License is distributed on an "AS IS" BASIS, |
| * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. |
| * See the License for the specific language governing permissions and |
| * limitations under the License. |
| * |
| */ |
| |
| #include <grpc/support/port_platform.h> |
| |
| #ifdef GPR_WINDOWS_SUBPROCESS |
| |
| #include <string.h> |
| #include <tchar.h> |
| #include <windows.h> |
| |
| #include <grpc/support/alloc.h> |
| #include <grpc/support/log.h> |
| #include <grpc/support/subprocess.h> |
| #include "src/core/lib/support/string.h" |
| #include "src/core/lib/support/string_windows.h" |
| |
| struct gpr_subprocess { |
| PROCESS_INFORMATION pi; |
| int joined; |
| int interrupted; |
| }; |
| |
| const char *gpr_subprocess_binary_extension() { return ".exe"; } |
| |
| gpr_subprocess *gpr_subprocess_create(int argc, const char **argv) { |
| gpr_subprocess *r; |
| |
| STARTUPINFO si; |
| PROCESS_INFORMATION pi; |
| |
| char *args = gpr_strjoin_sep(argv, (size_t)argc, " ", NULL); |
| TCHAR *args_tchar; |
| |
| args_tchar = gpr_char_to_tchar(args); |
| gpr_free(args); |
| |
| memset(&si, 0, sizeof(si)); |
| si.cb = sizeof(si); |
| memset(&pi, 0, sizeof(pi)); |
| |
| if (!CreateProcess(NULL, args_tchar, NULL, NULL, FALSE, |
| CREATE_NEW_PROCESS_GROUP, NULL, NULL, &si, &pi)) { |
| gpr_free(args_tchar); |
| return NULL; |
| } |
| gpr_free(args_tchar); |
| |
| r = gpr_malloc(sizeof(gpr_subprocess)); |
| memset(r, 0, sizeof(*r)); |
| r->pi = pi; |
| return r; |
| } |
| |
| void gpr_subprocess_destroy(gpr_subprocess *p) { |
| if (p) { |
| if (!p->joined) { |
| gpr_subprocess_interrupt(p); |
| gpr_subprocess_join(p); |
| } |
| if (p->pi.hProcess) { |
| CloseHandle(p->pi.hProcess); |
| } |
| if (p->pi.hThread) { |
| CloseHandle(p->pi.hThread); |
| } |
| gpr_free(p); |
| } |
| } |
| |
| int gpr_subprocess_join(gpr_subprocess *p) { |
| DWORD dwExitCode; |
| if (GetExitCodeProcess(p->pi.hProcess, &dwExitCode)) { |
| if (dwExitCode == STILL_ACTIVE) { |
| if (WaitForSingleObject(p->pi.hProcess, INFINITE) == WAIT_OBJECT_0) { |
| p->joined = 1; |
| goto getExitCode; |
| } |
| return -1; // failed to join |
| } else { |
| goto getExitCode; |
| } |
| } else { |
| return -1; // failed to get exit code |
| } |
| |
| getExitCode: |
| if (p->interrupted) { |
| return 0; |
| } |
| if (GetExitCodeProcess(p->pi.hProcess, &dwExitCode)) { |
| return (int)dwExitCode; |
| } else { |
| return -1; // failed to get exit code |
| } |
| } |
| |
| void gpr_subprocess_interrupt(gpr_subprocess *p) { |
| DWORD dwExitCode; |
| if (GetExitCodeProcess(p->pi.hProcess, &dwExitCode)) { |
| if (dwExitCode == STILL_ACTIVE) { |
| gpr_log(GPR_INFO, "sending ctrl-break"); |
| GenerateConsoleCtrlEvent(CTRL_BREAK_EVENT, p->pi.dwProcessId); |
| p->joined = 1; |
| p->interrupted = 1; |
| } |
| } |
| return; |
| } |
| |
| #endif /* GPR_WINDOWS_SUBPROCESS */ |