view hgext/__init__.py @ 26032:a3d5da8b641e

reachableroots: bail if integer object cannot be allocated

This patch also replaces Py_XDECREF() by Py_DECREF() because we known "val"
and "p" are not NULL.

BTW, we can eliminate some of these allocation and error handling of int objects
if the internal "seen" array has more information. For example,

  enum { SEEN = 1, ROOT = 2, REACHABLE = 4 };
  /* ... build ROOT mask from roots argument ... */
  if (seen[revnum + 1] & ROOT) {  /* instead of PySet_Contains(roots, val) */

>From my quick hack, it is 2x faster.

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