Module Name: src
Committed By: justin
Date: Sun Mar 9 23:01:11 UTC 2014
Modified Files:
src/lib/librumpuser: rumpuser_pth.c
Log Message:
Use __thread rather than pthread_getspecific for rumpuser curlwp.
This has better performance and curlwp is a performance bottleneck
in rump kernel code.
To generate a diff of this commit:
cvs rdiff -u -r1.34 -r1.35 src/lib/librumpuser/rumpuser_pth.c
Please note that diffs are not public domain; they are subject to the
copyright notices on the relevant files.
Modified files:
Index: src/lib/librumpuser/rumpuser_pth.c
diff -u src/lib/librumpuser/rumpuser_pth.c:1.34 src/lib/librumpuser/rumpuser_pth.c:1.35
--- src/lib/librumpuser/rumpuser_pth.c:1.34 Sun Oct 27 16:39:46 2013
+++ src/lib/librumpuser/rumpuser_pth.c Sun Mar 9 23:01:11 2014
@@ -1,4 +1,4 @@
-/* $NetBSD: rumpuser_pth.c,v 1.34 2013/10/27 16:39:46 rmind Exp $ */
+/* $NetBSD: rumpuser_pth.c,v 1.35 2014/03/09 23:01:11 justin Exp $ */
/*
* Copyright (c) 2007-2010 Antti Kantee. All Rights Reserved.
@@ -28,7 +28,7 @@
#include "rumpuser_port.h"
#if !defined(lint)
-__RCSID("$NetBSD: rumpuser_pth.c,v 1.34 2013/10/27 16:39:46 rmind Exp $");
+__RCSID("$NetBSD: rumpuser_pth.c,v 1.35 2014/03/09 23:01:11 justin Exp $");
#endif /* !lint */
#include <sys/queue.h>
@@ -622,13 +622,15 @@ rumpuser_cv_has_waiters(struct rumpuser_
* curlwp
*/
-static pthread_key_t curlwpkey;
+static __thread struct lwp *curlwp;
/*
* the if0'd curlwp implementation is not used by this hypervisor,
* but serves as test code to check that the intended usage works.
*/
#if 0
+static pthread_key_t curlwpkey;
+
struct rumpuser_lwp {
struct lwp *l;
LIST_ENTRY(rumpuser_lwp) l_entries;
@@ -716,12 +718,12 @@ rumpuser_curlwpop(int enum_rumplwpop, st
case RUMPUSER_LWP_DESTROY:
break;
case RUMPUSER_LWP_SET:
- assert(pthread_getspecific(curlwpkey) == NULL);
- pthread_setspecific(curlwpkey, l);
+ assert(curlwp == NULL);
+ curlwp = l;
break;
case RUMPUSER_LWP_CLEAR:
- assert(pthread_getspecific(curlwpkey) == l);
- pthread_setspecific(curlwpkey, NULL);
+ assert(curlwp == l);
+ curlwp = NULL;
break;
}
}
@@ -730,7 +732,7 @@ struct lwp *
rumpuser_curlwp(void)
{
- return pthread_getspecific(curlwpkey);
+ return curlwp;
}
#endif
@@ -738,5 +740,5 @@ rumpuser_curlwp(void)
void
rumpuser__thrinit(void)
{
- pthread_key_create(&curlwpkey, NULL);
+
}
