diff options
Diffstat (limited to 'src/core/lib/support/subprocess_windows.cc')
-rw-r--r-- | src/core/lib/support/subprocess_windows.cc | 126 |
1 files changed, 126 insertions, 0 deletions
diff --git a/src/core/lib/support/subprocess_windows.cc b/src/core/lib/support/subprocess_windows.cc new file mode 100644 index 0000000000..6769f1d3a4 --- /dev/null +++ b/src/core/lib/support/subprocess_windows.cc @@ -0,0 +1,126 @@ +/* + * + * 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_subprocess *)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 */ |