Author: davidxu
Date: Mon Oct 25 09:16:04 2010
New Revision: 214334
URL: http://svn.freebsd.org/changeset/base/214334
Log:
Get cpuset in pthread_attr_get_np() and free it in pthread_attr_destroy().
MFC after: 7 days
Modified:
head/lib/libthr/thread/thr_attr.c
head/lib/libthr/thread/thr_private.h
Modified: head/lib/libthr/thread/thr_attr.c
==============================================================================
--- head/lib/libthr/thread/thr_attr.c Mon Oct 25 08:30:19 2010
(r214333)
+++ head/lib/libthr/thread/thr_attr.c Mon Oct 25 09:16:04 2010
(r214334)
@@ -104,6 +104,8 @@
#include "thr_private.h"
+static size_t _get_kern_cpuset_size(void);
+
__weak_reference(_pthread_attr_destroy, pthread_attr_destroy);
int
@@ -116,6 +118,8 @@ _pthread_attr_destroy(pthread_attr_t *at
/* Invalid argument: */
ret = EINVAL;
else {
+ if ((*attr)->cpuset != NULL)
+ free((*attr)->cpuset);
/* Free the memory allocated to the attribute object: */
free(*attr);
@@ -132,28 +136,43 @@ _pthread_attr_destroy(pthread_attr_t *at
__weak_reference(_pthread_attr_get_np, pthread_attr_get_np);
int
-_pthread_attr_get_np(pthread_t pthread, pthread_attr_t *dst)
+_pthread_attr_get_np(pthread_t pthread, pthread_attr_t *dstattr)
{
struct pthread *curthread;
- struct pthread_attr attr;
+ struct pthread_attr attr, *dst;
int ret;
+ size_t cpusetsize;
- if (pthread == NULL || dst == NULL || *dst == NULL)
+ if (pthread == NULL || dst_attr == NULL || (dst = *dstattr) == NULL)
return (EINVAL);
-
+ cpusetsize = _get_kern_cpuset_size();
+ if (dst->cpusetsize < cpusetsize) {
+ char *newset = realloc(dst->cpuset, cpusetsize);
+ if (newset == NULL)
+ return (errno);
+ memset(newset + dst->cpusetsize, 0, cpusetsize -
+ dst->cpusetsize);
+ dst->cpuset = (cpuset_t *)newset;
+ dst->cpusetsize = cpusetsize;
+ }
curthread = _get_curthread();
if ((ret = _thr_find_thread(curthread, pthread, /*include dead*/0)) !=
0)
return (ret);
attr = pthread->attr;
if (pthread->flags & THR_FLAGS_DETACHED)
attr.flags |= PTHREAD_DETACHED;
+ ret = cpuset_getaffinity(CPU_LEVEL_WHICH, CPU_WHICH_TID, TID(pthread),
+ dst->cpusetsize, dst->cpuset);
+ if (ret == -1)
+ ret = errno;
THR_THREAD_UNLOCK(curthread, pthread);
-
- memcpy(*dst, &attr, sizeof(struct pthread_attr));
- /* XXX */
- (*dst)->cpuset = NULL;
- (*dst)->cpusetsize = 0;
- return (0);
+ if (ret == 0) {
+ memcpy(&dst->pthread_attr_start_copy,
+ &attr.pthread_attr_start_copy,
+ offsetof(struct pthread_attr, pthread_attr_end_copy) -
+ offsetof(struct pthread_attr, pthread_attr_start_copy));
+ }
+ return (ret);
}
__weak_reference(_pthread_attr_getdetachstate, pthread_attr_getdetachstate);
Modified: head/lib/libthr/thread/thr_private.h
==============================================================================
--- head/lib/libthr/thread/thr_private.h Mon Oct 25 08:30:19 2010
(r214333)
+++ head/lib/libthr/thread/thr_private.h Mon Oct 25 09:16:04 2010
(r214334)
@@ -230,6 +230,7 @@ struct pthread_atfork {
};
struct pthread_attr {
+#define pthread_attr_start_copy sched_policy
int sched_policy;
int sched_inherit;
int prio;
@@ -239,6 +240,7 @@ struct pthread_attr {
void *stackaddr_attr;
size_t stacksize_attr;
size_t guardsize_attr;
+#define pthread_attr_end_copy cpuset
cpuset_t *cpuset;
size_t cpusetsize;
};
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