Mercurial > cpython-lru_cache-weakref
annotate PCbuild/kill_python.c @ 68071:0f52cfc91fae
More automated version replacement.
| author | Georg Brandl <georg@python.org> |
|---|---|
| date | Sun, 20 Feb 2011 10:41:31 +0000 |
| parents | 58f2b27c91a1 |
| children | 1085b0e475d8 |
| rev | line source |
|---|---|
| 47705 | 1 /* |
| 2 * Helper program for killing lingering python[_d].exe processes before | |
| 3 * building, thus attempting to avoid build failures due to files being | |
| 4 * locked. | |
| 5 */ | |
| 6 | |
| 7 #include <windows.h> | |
| 8 #include <wchar.h> | |
| 9 #include <tlhelp32.h> | |
| 10 #include <stdio.h> | |
| 11 | |
| 12 #pragma comment(lib, "psapi") | |
| 13 | |
| 14 #ifdef _DEBUG | |
| 15 #define PYTHON_EXE (L"python_d.exe") | |
| 16 #define PYTHON_EXE_LEN (12) | |
| 17 #define KILL_PYTHON_EXE (L"kill_python_d.exe") | |
| 18 #define KILL_PYTHON_EXE_LEN (17) | |
| 19 #else | |
| 20 #define PYTHON_EXE (L"python.exe") | |
| 21 #define PYTHON_EXE_LEN (10) | |
| 22 #define KILL_PYTHON_EXE (L"kill_python.exe") | |
| 23 #define KILL_PYTHON_EXE_LEN (15) | |
| 24 #endif | |
| 25 | |
| 26 int | |
| 27 main(int argc, char **argv) | |
| 28 { | |
| 29 HANDLE hp, hsp, hsm; /* process, snapshot processes, snapshot modules */ | |
| 30 DWORD dac, our_pid; | |
| 31 size_t len; | |
| 32 wchar_t path[MAX_PATH+1]; | |
| 33 | |
| 34 MODULEENTRY32W me; | |
| 35 PROCESSENTRY32W pe; | |
| 36 | |
| 37 me.dwSize = sizeof(MODULEENTRY32W); | |
| 38 pe.dwSize = sizeof(PROCESSENTRY32W); | |
| 39 | |
| 40 memset(path, 0, MAX_PATH+1); | |
| 41 | |
| 42 our_pid = GetCurrentProcessId(); | |
| 43 | |
| 44 hsm = CreateToolhelp32Snapshot(TH32CS_SNAPMODULE, our_pid); | |
| 45 if (hsm == INVALID_HANDLE_VALUE) { | |
| 46 printf("CreateToolhelp32Snapshot[1] failed: %d\n", GetLastError()); | |
| 47 return 1; | |
| 48 } | |
| 49 | |
| 50 if (!Module32FirstW(hsm, &me)) { | |
| 51 printf("Module32FirstW[1] failed: %d\n", GetLastError()); | |
| 52 CloseHandle(hsm); | |
| 53 return 1; | |
| 54 } | |
| 55 | |
| 56 /* | |
| 57 * Enumerate over the modules for the current process in order to find | |
| 58 * kill_process[_d].exe, then take a note of the directory it lives in. | |
| 59 */ | |
| 60 do { | |
| 61 if (_wcsnicmp(me.szModule, KILL_PYTHON_EXE, KILL_PYTHON_EXE_LEN)) | |
| 62 continue; | |
| 63 | |
| 64 len = wcsnlen_s(me.szExePath, MAX_PATH) - KILL_PYTHON_EXE_LEN; | |
| 65 wcsncpy_s(path, MAX_PATH+1, me.szExePath, len); | |
| 66 | |
| 67 break; | |
| 68 | |
| 69 } while (Module32NextW(hsm, &me)); | |
| 70 | |
| 71 CloseHandle(hsm); | |
| 72 | |
| 73 if (path == NULL) { | |
| 74 printf("failed to discern directory of running process\n"); | |
| 75 return 1; | |
| 76 } | |
| 77 | |
| 78 /* | |
| 79 * Take a snapshot of system processes. Enumerate over the snapshot, | |
| 80 * looking for python processes. When we find one, verify it lives | |
| 81 * in the same directory we live in. If it does, kill it. If we're | |
| 82 * unable to kill it, treat this as a fatal error and return 1. | |
| 83 * | |
| 84 * The rationale behind this is that we're called at the start of the | |
| 85 * build process on the basis that we'll take care of killing any | |
| 86 * running instances, such that the build won't encounter permission | |
| 87 * denied errors during linking. If we can't kill one of the processes, | |
| 88 * we can't provide this assurance, and the build shouldn't start. | |
| 89 */ | |
| 90 | |
| 91 hsp = CreateToolhelp32Snapshot(TH32CS_SNAPPROCESS, 0); | |
| 92 if (hsp == INVALID_HANDLE_VALUE) { | |
| 93 printf("CreateToolhelp32Snapshot[2] failed: %d\n", GetLastError()); | |
| 94 return 1; | |
| 95 } | |
| 96 | |
| 97 if (!Process32FirstW(hsp, &pe)) { | |
| 98 printf("Process32FirstW failed: %d\n", GetLastError()); | |
| 99 CloseHandle(hsp); | |
| 100 return 1; | |
| 101 } | |
| 102 | |
| 103 dac = PROCESS_QUERY_INFORMATION | PROCESS_VM_READ | PROCESS_TERMINATE; | |
| 104 do { | |
| 105 | |
| 106 /* | |
| 107 * XXX TODO: if we really wanted to be fancy, we could check the | |
| 108 * modules for all processes (not just the python[_d].exe ones) | |
|
68071
0f52cfc91fae
More automated version replacement.
Georg Brandl <georg@python.org>
parents:
54885
diff
changeset
|
109 * and see if any of our DLLs are loaded (i.e. python33[_d].dll), |
| 47705 | 110 * as that would also inhibit our ability to rebuild the solution. |
| 111 * Not worth loosing sleep over though; for now, a simple check | |
| 112 * for just the python executable should be sufficient. | |
| 113 */ | |
| 114 | |
| 115 if (_wcsnicmp(pe.szExeFile, PYTHON_EXE, PYTHON_EXE_LEN)) | |
| 116 /* This isn't a python process. */ | |
| 117 continue; | |
| 118 | |
| 119 /* It's a python process, so figure out which directory it's in... */ | |
| 120 hsm = CreateToolhelp32Snapshot(TH32CS_SNAPMODULE, pe.th32ProcessID); | |
| 121 if (hsm == INVALID_HANDLE_VALUE) | |
| 122 /* | |
| 123 * If our module snapshot fails (which will happen if we don't own | |
| 124 * the process), just ignore it and continue. (It seems different | |
| 125 * versions of Windows return different values for GetLastError() | |
| 126 * in this situation; it's easier to just ignore it and move on vs. | |
| 127 * stopping the build for what could be a false positive.) | |
| 128 */ | |
| 129 continue; | |
| 130 | |
| 131 if (!Module32FirstW(hsm, &me)) { | |
| 132 printf("Module32FirstW[2] failed: %d\n", GetLastError()); | |
| 133 CloseHandle(hsp); | |
| 134 CloseHandle(hsm); | |
| 135 return 1; | |
| 136 } | |
| 137 | |
| 138 do { | |
| 139 if (_wcsnicmp(me.szModule, PYTHON_EXE, PYTHON_EXE_LEN)) | |
| 140 /* Wrong module, we're looking for python[_d].exe... */ | |
| 141 continue; | |
| 142 | |
| 143 if (_wcsnicmp(path, me.szExePath, len)) | |
| 144 /* Process doesn't live in our directory. */ | |
| 145 break; | |
| 146 | |
| 147 /* Python process residing in the right directory, kill it! */ | |
| 148 hp = OpenProcess(dac, FALSE, pe.th32ProcessID); | |
| 149 if (!hp) { | |
| 150 printf("OpenProcess failed: %d\n", GetLastError()); | |
| 151 CloseHandle(hsp); | |
| 152 CloseHandle(hsm); | |
| 153 return 1; | |
| 154 } | |
| 155 | |
| 156 if (!TerminateProcess(hp, 1)) { | |
| 157 printf("TerminateProcess failed: %d\n", GetLastError()); | |
| 158 CloseHandle(hsp); | |
| 159 CloseHandle(hsm); | |
| 160 CloseHandle(hp); | |
| 161 return 1; | |
| 162 } | |
| 163 | |
| 164 CloseHandle(hp); | |
| 165 break; | |
| 166 | |
| 167 } while (Module32NextW(hsm, &me)); | |
| 168 | |
| 169 CloseHandle(hsm); | |
| 170 | |
| 171 } while (Process32NextW(hsp, &pe)); | |
| 172 | |
| 173 CloseHandle(hsp); | |
| 174 | |
| 175 return 0; | |
| 176 } | |
| 177 | |
| 178 /* vi: set ts=8 sw=4 sts=4 expandtab */ |