Mercurial > cpython-lru_cache-weakref
view Python/frozenmain.c @ 87690:66c1c9f32567 default tip
Add use_weakref option to functools.lru_cache
The use_weakref option makes lru_cache create weak references to the function
arguments when creating the cache key, which prevents them from staying in the
memory forever even after all other references to them are gone.
This is a proof of concept for http://bugs.python.org/issue19859
| author | Radomir Dopieralski <devel@sheep.art.pl> |
|---|---|
| date | Tue, 03 Dec 2013 16:02:48 +0100 |
| parents | e408e821d6c8 |
| children |
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/* Python interpreter main program for frozen scripts */ #include "Python.h" #include <locale.h> #ifdef MS_WINDOWS extern void PyWinFreeze_ExeInit(void); extern void PyWinFreeze_ExeTerm(void); extern int PyInitFrozenExtensions(void); #endif /* Main program */ int Py_FrozenMain(int argc, char **argv) { char *p; int i, n, sts = 1; int inspect = 0; int unbuffered = 0; char *oldloc = NULL; wchar_t **argv_copy = NULL; /* We need a second copies, as Python might modify the first one. */ wchar_t **argv_copy2 = NULL; argv_copy = PyMem_RawMalloc(sizeof(wchar_t*) * argc); argv_copy2 = PyMem_RawMalloc(sizeof(wchar_t*) * argc); if (!argv_copy || !argv_copy2) { fprintf(stderr, "out of memory\n"); goto error; } Py_FrozenFlag = 1; /* Suppress errors from getpath.c */ if ((p = Py_GETENV("PYTHONINSPECT")) && *p != '\0') inspect = 1; if ((p = Py_GETENV("PYTHONUNBUFFERED")) && *p != '\0') unbuffered = 1; if (unbuffered) { setbuf(stdin, (char *)NULL); setbuf(stdout, (char *)NULL); setbuf(stderr, (char *)NULL); } oldloc = _PyMem_RawStrdup(setlocale(LC_ALL, NULL)); if (!oldloc) { fprintf(stderr, "out of memory\n"); goto error; } setlocale(LC_ALL, ""); for (i = 0; i < argc; i++) { argv_copy[i] = _Py_char2wchar(argv[i], NULL); argv_copy2[i] = argv_copy[i]; if (!argv_copy[i]) { fprintf(stderr, "Unable to decode the command line argument #%i\n", i + 1); argc = i; goto error; } } setlocale(LC_ALL, oldloc); PyMem_RawFree(oldloc); oldloc = NULL; #ifdef MS_WINDOWS PyInitFrozenExtensions(); #endif /* MS_WINDOWS */ Py_SetProgramName(argv_copy[0]); Py_Initialize(); #ifdef MS_WINDOWS PyWinFreeze_ExeInit(); #endif if (Py_VerboseFlag) fprintf(stderr, "Python %s\n%s\n", Py_GetVersion(), Py_GetCopyright()); PySys_SetArgv(argc, argv_copy); n = PyImport_ImportFrozenModule("__main__"); if (n == 0) Py_FatalError("__main__ not frozen"); if (n < 0) { PyErr_Print(); sts = 1; } else sts = 0; if (inspect && isatty((int)fileno(stdin))) sts = PyRun_AnyFile(stdin, "<stdin>") != 0; #ifdef MS_WINDOWS PyWinFreeze_ExeTerm(); #endif Py_Finalize(); error: PyMem_RawFree(argv_copy); if (argv_copy2) { for (i = 0; i < argc; i++) PyMem_RawFree(argv_copy2[i]); PyMem_RawFree(argv_copy2); } PyMem_RawFree(oldloc); return sts; }
