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Issue #22181: os.urandom() now releases the GIL when the getrandom()

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implementation is used.
This commit is contained in:
Victor Stinner 2015-03-30 11:16:40 +02:00
parent a52f31dfe2
commit 79b74aeb20
1 changed files with 11 additions and 2 deletions
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13
Python/random.c
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@ -115,9 +115,18 @@ py_getrandom(void *buffer, Py_ssize_t size, int raise)
while (0 < size) {
errno = 0;
/* the libc doesn't expose getrandom() yet, see:
/* Use syscall() because the libc doesn't expose getrandom() yet, see:
* https://sourceware.org/bugzilla/show_bug.cgi?id=17252 */
n = syscall(SYS_getrandom, buffer, size, flags);
if (raise) {
Py_BEGIN_ALLOW_THREADS
n = syscall(SYS_getrandom, buffer, size, flags);
Py_END_ALLOW_THREADS
}
else {
n = syscall(SYS_getrandom, buffer, size, flags);
}
if (n < 0) {
if (errno == ENOSYS) {
getrandom_works = 0;