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Additional spinlock in random_jkiss. Initial attempt at implementing dummy sessions to provide total consistency - used in mysql_client in relation to authentication - a single static dummy session is used and linked from the client dcb when authentication is not yet complete.

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This commit is contained in:
counterpoint
2015-08-28 15:30:06 +01:00
parent 0d62f52812
commit 9c5f622481
7 changed files with 71 additions and 9 deletions
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2
server/core/random_jkiss.c
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@ -117,11 +117,13 @@ static void
random_init_jkiss(void)
{
int newrand, i;
spinlock_acquire(&random_jkiss_spinlock);
if ((newrand = random_jkiss_devrand()) != 0) x = newrand;
if ((newrand = random_jkiss_devrand()) != 0) y = newrand;
if ((newrand = random_jkiss_devrand()) != 0) z = newrand;
if ((newrand = random_jkiss_devrand()) != 0)
c = newrand % 698769068 + 1; /* Should be less than 698769069 */
spinlock_release(&random_jkiss_spinlock);
/* "Warm up" our random number generator */
for (i = 0; i < 100; i++) random_jkiss();