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Issue #29157: Prefer getrandom() over getentropy()
authorVictor Stinner <victor.stinner@gmail.com>
Mon, 9 Jan 2017 10:18:53 +0000 (11:18 +0100)
committerVictor Stinner <victor.stinner@gmail.com>
Mon, 9 Jan 2017 10:18:53 +0000 (11:18 +0100)
commit035ba5da3e53e45c712b39fe1f6fb743e697c032
treee7c8b948e3b2405d9e629d0b9fff0baf37335a58tree | snapshot
parent9937d90ee8c3facf6b5395e7b714a535c9352d57commit | diff
Issue #29157: Prefer getrandom() over getentropy()

Copy and then adapt Python/random.c from default branch. Difference between 3.5
and default branches:

* Python 3.5 only uses getrandom() in non-blocking mode: flags=GRND_NONBLOCK
* If getrandom() fails with EAGAIN: py_getrandom() immediately fails and
  remembers that getrandom() doesn't work.
* Python 3.5 has no _PyOS_URandomNonblock() function: _PyOS_URandom()
  works in non-blocking mode on Python 3.5
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