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Fix initialization of optimization values for AIO

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This commit is contained in:
Ulrich Drepper
2011-05-14 19:30:37 -04:00
parent 98d76b46d2
commit 2fc54d6f9f
3 changed files with 14 additions and 8 deletions
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8
sysdeps/pthread/aio_misc.c
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@@ -1,5 +1,5 @@
/* Handle general operations.
Copyright (C) 1997, 1998, 1999, 2000, 2001, 2003, 2004, 2006, 2007, 2009
Copyright (C) 1997-2001, 2003, 2004, 2006, 2007, 2009, 2011
Free Software Foundation, Inc.
This file is part of the GNU C Library.
Contributed by Ulrich Drepper <drepper@cygnus.com>, 1997.
@@ -26,6 +26,7 @@
#include <pthread.h>
#include <stdlib.h>
#include <unistd.h>
#include <sys/param.h>
#include <sys/stat.h>
#include <sys/time.h>
#include <aio_misc.h>
@@ -87,7 +88,7 @@ static int idle_thread_count;
static struct aioinit optim =
{
20, /* int aio_threads; Maximal number of threads. */
64, /* int aio_num; Number of expected simultanious requests. */
64, /* int aio_num; Number of expected simultaneous requests. */
0,
0,
0,
@@ -282,9 +283,10 @@ __aio_init (const struct aioinit *init)
if (pool == NULL)
{
optim.aio_threads = init->aio_threads < 1 ? 1 : init->aio_threads;
assert (powerof2 (ENTRIES_PER_ROW));
optim.aio_num = (init->aio_num < ENTRIES_PER_ROW
? ENTRIES_PER_ROW
: init->aio_num & ~ENTRIES_PER_ROW);
: init->aio_num & ~(ENTRIES_PER_ROW - 1));
}
if (init->aio_idle_time != 0)