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https://github.com/jart/cosmopolitan.git
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d26d7ae0e4
Building o//third_party/python now takes 5 seconds on my PC This change works towards modifying Python to use runtime dispatching when appropriate. For example, when loading the magnums in the socket module, it's a good idea to check if the magnum is zero, because that means the local system platform doesn't support it.
70 lines
2 KiB
C
70 lines
2 KiB
C
/* Minimal main program -- everything is loaded from the library */
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/* clang-format off */
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#include "third_party/python/Include/Python.h"
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#include "libc/unicode/locale.h"
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int
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main(int argc, char **argv)
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{
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wchar_t **argv_copy;
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/* We need a second copy, as Python might modify the first one. */
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wchar_t **argv_copy2;
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int i, res;
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char *oldloc;
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/* Force malloc() allocator to bootstrap Python */
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(void)_PyMem_SetupAllocators("malloc");
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argv_copy = (wchar_t **)PyMem_RawMalloc(sizeof(wchar_t*) * (argc+1));
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argv_copy2 = (wchar_t **)PyMem_RawMalloc(sizeof(wchar_t*) * (argc+1));
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if (!argv_copy || !argv_copy2) {
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fprintf(stderr, "out of memory\n");
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return 1;
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}
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/* 754 requires that FP exceptions run in "no stop" mode by default,
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* and until C vendors implement C99's ways to control FP exceptions,
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* Python requires non-stop mode. Alas, some platforms enable FP
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* exceptions by default. Here we disable them.
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*/
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#ifdef __FreeBSD__
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fedisableexcept(FE_OVERFLOW);
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#endif
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oldloc = _PyMem_RawStrdup(setlocale(LC_ALL, NULL));
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if (!oldloc) {
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fprintf(stderr, "out of memory\n");
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return 1;
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}
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setlocale(LC_ALL, "");
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for (i = 0; i < argc; i++) {
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argv_copy[i] = Py_DecodeLocale(argv[i], NULL);
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if (!argv_copy[i]) {
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PyMem_RawFree(oldloc);
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fprintf(stderr, "Fatal Python error: "
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"unable to decode the command line argument #%i\n",
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i + 1);
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return 1;
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}
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argv_copy2[i] = argv_copy[i];
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}
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argv_copy2[argc] = argv_copy[argc] = NULL;
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setlocale(LC_ALL, oldloc);
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PyMem_RawFree(oldloc);
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res = Py_Main(argc, argv_copy);
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/* Force again malloc() allocator to release memory blocks allocated
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before Py_Main() */
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(void)_PyMem_SetupAllocators("malloc");
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for (i = 0; i < argc; i++) {
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PyMem_RawFree(argv_copy2[i]);
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}
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PyMem_RawFree(argv_copy);
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PyMem_RawFree(argv_copy2);
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return res;
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}
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