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agent: Reduce sleep time in the progress callback.

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* agent/gpg-agent.c (agent_libgcrypt_progress_cb): Reduce sleep time
from 100ms to 1ms or use gpgrt_yield when build against a recent
libgpg-error.
--

Debian-bug-id: 851298
Signed-off-by: Werner Koch <wk@gnupg.org>
This commit is contained in:
Werner Koch 2017-01-18 10:13:04 +01:00
parent 2312248b2e
commit 3d356d165a
No known key found for this signature in database
GPG Key ID: E3FDFF218E45B72B
1 changed files with 10 additions and 2 deletions
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12
agent/gpg-agent.c
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@ -1763,11 +1763,19 @@ agent_libgcrypt_progress_cb (void *data, const char *what, int printchar,
/* Libgcrypt < 1.8 does not know about nPth and thus when it reads
* from /dev/random this will block the process. To mitigate this
* problem we take a short nap when Libgcrypt tells us that it needs
* problem we yield the thread when Libgcrypt tells us that it needs
* more entropy. This way other threads have chance to run. */
#if GCRYPT_VERSION_NUMBER < 0x010800 /* 1.8.0 */
if (what && !strcmp (what, "need_entropy"))
npth_usleep (100000); /* 100ms */
{
#if GPGRT_VERSION_NUMBER < 0x011900 /* 1.25 */
/* In older gpg-error versions gpgrt_yield is buggy for use with
* nPth and thus we need to resort to a sleep call. */
npth_usleep (1000); /* 1ms */
#else
gpgrt_yield ();
#endif
}
#endif
}