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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.
66 lines
1.5 KiB
C
66 lines
1.5 KiB
C
/* clang-format off */
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#include "third_party/python/Include/Python.h"
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#include "third_party/python/Include/asdl.h"
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asdl_seq *
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_Py_asdl_seq_new(Py_ssize_t size, PyArena *arena)
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{
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asdl_seq *seq = NULL;
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size_t n;
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/* check size is sane */
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if (size < 0 ||
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(size && (((size_t)size - 1) > (SIZE_MAX / sizeof(void *))))) {
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PyErr_NoMemory();
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return NULL;
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}
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n = (size ? (sizeof(void *) * (size - 1)) : 0);
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/* check if size can be added safely */
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if (n > SIZE_MAX - sizeof(asdl_seq)) {
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PyErr_NoMemory();
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return NULL;
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}
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n += sizeof(asdl_seq);
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seq = (asdl_seq *)PyArena_Malloc(arena, n);
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if (!seq) {
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PyErr_NoMemory();
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return NULL;
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}
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memset(seq, 0, n);
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seq->size = size;
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return seq;
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}
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asdl_int_seq *
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_Py_asdl_int_seq_new(Py_ssize_t size, PyArena *arena)
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{
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asdl_int_seq *seq = NULL;
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size_t n;
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/* check size is sane */
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if (size < 0 ||
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(size && (((size_t)size - 1) > (SIZE_MAX / sizeof(void *))))) {
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PyErr_NoMemory();
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return NULL;
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}
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n = (size ? (sizeof(void *) * (size - 1)) : 0);
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/* check if size can be added safely */
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if (n > SIZE_MAX - sizeof(asdl_seq)) {
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PyErr_NoMemory();
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return NULL;
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}
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n += sizeof(asdl_seq);
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seq = (asdl_int_seq *)PyArena_Malloc(arena, n);
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if (!seq) {
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PyErr_NoMemory();
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return NULL;
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}
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memset(seq, 0, n);
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seq->size = size;
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return seq;
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}
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