1. e4e021b Release the interpreter lock for calls that may block: _locking(), by Guido van Rossum · 26 years ago
  2. 407a22d Made it real. Changed locking() to work with file descriptors instead by Guido van Rossum · 27 years ago
  3. 29c1ea5 Got the new structure working with MSVC 4.2. by Guido van Rossum · 27 years ago