git: cc02fa8da105 - stable/14 - libthr: thr_attr.c: Clarity, whitespace and style
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Date: Thu, 18 Jan 2024 21:08:44 UTC
The branch stable/14 has been updated by olce:
URL: https://cgit.FreeBSD.org/src/commit/?id=cc02fa8da105294e9315546507c8216221dafbc1
commit cc02fa8da105294e9315546507c8216221dafbc1
Author: Olivier Certner <olce@FreeBSD.org>
AuthorDate: 2023-11-24 16:00:53 +0000
Commit: Olivier Certner <olce@FreeBSD.org>
CommitDate: 2024-01-18 21:07:46 +0000
libthr: thr_attr.c: Clarity, whitespace and style
Also, remove most comments, which don't add value.
Reviewed by: emaste
Approved by: markj (mentor)
MFC after: 2 weeks
Sponsored by: The FreeBSD Foundation
Differential Revision: https://reviews.freebsd.org/D43005
(cherry picked from commit bd61c1e89dc4a40ba696de1785d423978e1c2147)
---
lib/libthr/thread/thr_attr.c | 471 ++++++++++++++++++-------------------------
1 file changed, 193 insertions(+), 278 deletions(-)
diff --git a/lib/libthr/thread/thr_attr.c b/lib/libthr/thread/thr_attr.c
index 9740bed6ebd3..decbcb949167 100644
--- a/lib/libthr/thread/thr_attr.c
+++ b/lib/libthr/thread/thr_attr.c
@@ -113,26 +113,15 @@ __weak_reference(_thr_attr_destroy, pthread_attr_destroy);
int
_thr_attr_destroy(pthread_attr_t *attr)
{
- int ret;
- /* Check for invalid arguments: */
if (attr == NULL || *attr == NULL)
- /* Invalid argument: */
- ret = EINVAL;
- else {
- if ((*attr)->cpuset != NULL)
- free((*attr)->cpuset);
- /* Free the memory allocated to the attribute object: */
- free(*attr);
+ return (EINVAL);
- /*
- * Leave the attribute pointer NULL now that the memory
- * has been freed:
- */
- *attr = NULL;
- ret = 0;
- }
- return (ret);
+ if ((*attr)->cpuset != NULL)
+ free((*attr)->cpuset);
+ free(*attr);
+ *attr = NULL;
+ return (0);
}
__weak_reference(_thr_attr_get_np, pthread_attr_get_np);
@@ -141,36 +130,44 @@ __weak_reference(_thr_attr_get_np, _pthread_attr_get_np);
int
_thr_attr_get_np(pthread_t pthread, pthread_attr_t *dstattr)
{
- struct pthread *curthread;
struct pthread_attr attr, *dst;
- int ret;
- size_t kern_size;
+ struct pthread *curthread;
+ size_t kern_size;
+ int error;
if (pthread == NULL || dstattr == NULL || (dst = *dstattr) == NULL)
return (EINVAL);
+
kern_size = _get_kern_cpuset_size();
+
if (dst->cpuset == NULL) {
dst->cpuset = calloc(1, kern_size);
dst->cpusetsize = kern_size;
}
+
curthread = _get_curthread();
- if ((ret = _thr_find_thread(curthread, pthread, /*include dead*/0)) != 0)
- return (ret);
+ /* Arg 0 is to include dead threads. */
+ if ((error = _thr_find_thread(curthread, pthread, 0)) != 0)
+ return (error);
+
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;
+
+ error = cpuset_getaffinity(CPU_LEVEL_WHICH, CPU_WHICH_TID, TID(pthread),
+ dst->cpusetsize, dst->cpuset);
+ if (error == -1)
+ error = errno;
+
THR_THREAD_UNLOCK(curthread, pthread);
- 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);
+
+ if (error == 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 (0);
}
__weak_reference(_thr_attr_getdetachstate, pthread_attr_getdetachstate);
@@ -179,22 +176,15 @@ __weak_reference(_thr_attr_getdetachstate, _pthread_attr_getdetachstate);
int
_thr_attr_getdetachstate(const pthread_attr_t *attr, int *detachstate)
{
- int ret;
- /* Check for invalid arguments: */
if (attr == NULL || *attr == NULL || detachstate == NULL)
- ret = EINVAL;
- else {
- /* Check if the detached flag is set: */
- if ((*attr)->flags & PTHREAD_DETACHED)
- /* Return detached: */
- *detachstate = PTHREAD_CREATE_DETACHED;
- else
- /* Return joinable: */
- *detachstate = PTHREAD_CREATE_JOINABLE;
- ret = 0;
- }
- return (ret);
+ return (EINVAL);
+
+ if ((*attr)->flags & PTHREAD_DETACHED)
+ *detachstate = PTHREAD_CREATE_DETACHED;
+ else
+ *detachstate = PTHREAD_CREATE_JOINABLE;
+ return (0);
}
__weak_reference(_thr_attr_getguardsize, pthread_attr_getguardsize);
@@ -204,17 +194,12 @@ int
_thr_attr_getguardsize(const pthread_attr_t * __restrict attr,
size_t * __restrict guardsize)
{
- int ret;
- /* Check for invalid arguments: */
if (attr == NULL || *attr == NULL || guardsize == NULL)
- ret = EINVAL;
- else {
- /* Return the guard size: */
- *guardsize = (*attr)->guardsize_attr;
- ret = 0;
- }
- return (ret);
+ return (EINVAL);
+
+ *guardsize = (*attr)->guardsize_attr;
+ return (0);
}
__weak_reference(_thr_attr_getinheritsched, pthread_attr_getinheritsched);
@@ -224,14 +209,12 @@ int
_thr_attr_getinheritsched(const pthread_attr_t * __restrict attr,
int * __restrict sched_inherit)
{
- int ret = 0;
- if ((attr == NULL) || (*attr == NULL))
- ret = EINVAL;
- else
- *sched_inherit = (*attr)->sched_inherit;
+ if (attr == NULL || *attr == NULL)
+ return (EINVAL);
- return (ret);
+ *sched_inherit = (*attr)->sched_inherit;
+ return (0);
}
__weak_reference(_thr_attr_getschedparam, pthread_attr_getschedparam);
@@ -241,14 +224,12 @@ int
_thr_attr_getschedparam(const pthread_attr_t * __restrict attr,
struct sched_param * __restrict param)
{
- int ret = 0;
- if ((attr == NULL) || (*attr == NULL) || (param == NULL))
- ret = EINVAL;
- else
- param->sched_priority = (*attr)->prio;
+ if (attr == NULL || *attr == NULL || param == NULL)
+ return (EINVAL);
- return (ret);
+ param->sched_priority = (*attr)->prio;
+ return (0);
}
__weak_reference(_thr_attr_getschedpolicy, pthread_attr_getschedpolicy);
@@ -258,14 +239,12 @@ int
_thr_attr_getschedpolicy(const pthread_attr_t * __restrict attr,
int * __restrict policy)
{
- int ret = 0;
- if ((attr == NULL) || (*attr == NULL) || (policy == NULL))
- ret = EINVAL;
- else
- *policy = (*attr)->sched_policy;
+ if (attr == NULL || *attr == NULL || policy == NULL)
+ return (EINVAL);
- return (ret);
+ *policy = (*attr)->sched_policy;
+ return (0);
}
__weak_reference(_thr_attr_getscope, pthread_attr_getscope);
@@ -275,17 +254,13 @@ int
_thr_attr_getscope(const pthread_attr_t * __restrict attr,
int * __restrict contentionscope)
{
- int ret = 0;
-
- if ((attr == NULL) || (*attr == NULL) || (contentionscope == NULL))
- /* Return an invalid argument: */
- ret = EINVAL;
- else
- *contentionscope = (*attr)->flags & PTHREAD_SCOPE_SYSTEM ?
- PTHREAD_SCOPE_SYSTEM : PTHREAD_SCOPE_PROCESS;
+ if (attr == NULL || *attr == NULL || contentionscope == NULL)
+ return (EINVAL);
- return (ret);
+ *contentionscope = (*attr)->flags & PTHREAD_SCOPE_SYSTEM ?
+ PTHREAD_SCOPE_SYSTEM : PTHREAD_SCOPE_PROCESS;
+ return (0);
}
__weak_reference(_pthread_attr_getstack, pthread_attr_getstack);
@@ -294,19 +269,14 @@ int
_pthread_attr_getstack(const pthread_attr_t * __restrict attr,
void ** __restrict stackaddr, size_t * __restrict stacksize)
{
- int ret;
-
- /* Check for invalid arguments: */
- if (attr == NULL || *attr == NULL || stackaddr == NULL
- || stacksize == NULL )
- ret = EINVAL;
- else {
- /* Return the stack address and size */
- *stackaddr = (*attr)->stackaddr_attr;
- *stacksize = (*attr)->stacksize_attr;
- ret = 0;
- }
- return (ret);
+
+ if (attr == NULL || *attr == NULL || stackaddr == NULL ||
+ stacksize == NULL)
+ return (EINVAL);
+
+ *stackaddr = (*attr)->stackaddr_attr;
+ *stacksize = (*attr)->stacksize_attr;
+ return (0);
}
__weak_reference(_thr_attr_getstackaddr, pthread_attr_getstackaddr);
@@ -315,17 +285,12 @@ __weak_reference(_thr_attr_getstackaddr, _pthread_attr_getstackaddr);
int
_thr_attr_getstackaddr(const pthread_attr_t *attr, void **stackaddr)
{
- int ret;
- /* Check for invalid arguments: */
if (attr == NULL || *attr == NULL || stackaddr == NULL)
- ret = EINVAL;
- else {
- /* Return the stack address: */
- *stackaddr = (*attr)->stackaddr_attr;
- ret = 0;
- }
- return (ret);
+ return (EINVAL);
+
+ *stackaddr = (*attr)->stackaddr_attr;
+ return (0);
}
__weak_reference(_thr_attr_getstacksize, pthread_attr_getstacksize);
@@ -335,17 +300,12 @@ int
_thr_attr_getstacksize(const pthread_attr_t * __restrict attr,
size_t * __restrict stacksize)
{
- int ret;
-
- /* Check for invalid arguments: */
- if (attr == NULL || *attr == NULL || stacksize == NULL)
- ret = EINVAL;
- else {
- /* Return the stack size: */
- *stacksize = (*attr)->stacksize_attr;
- ret = 0;
- }
- return (ret);
+
+ if (attr == NULL || *attr == NULL || stacksize == NULL)
+ return (EINVAL);
+
+ *stacksize = (*attr)->stacksize_attr;
+ return (0);
}
__weak_reference(_thr_attr_init, pthread_attr_init);
@@ -354,40 +314,30 @@ __weak_reference(_thr_attr_init, _pthread_attr_init);
int
_thr_attr_init(pthread_attr_t *attr)
{
- int ret;
- pthread_attr_t pattr;
+ pthread_attr_t pattr;
_thr_check_init();
- /* Allocate memory for the attribute object: */
- if ((pattr = (pthread_attr_t) malloc(sizeof(struct pthread_attr))) == NULL)
- /* Insufficient memory: */
- ret = ENOMEM;
- else {
- /* Initialise the attribute object with the defaults: */
- memcpy(pattr, &_pthread_attr_default, sizeof(struct pthread_attr));
-
- /* Return a pointer to the attribute object: */
- *attr = pattr;
- ret = 0;
- }
- return (ret);
+ if ((pattr = malloc(sizeof(*pattr))) == NULL)
+ return (ENOMEM);
+
+ memcpy(pattr, &_pthread_attr_default, sizeof(struct pthread_attr));
+ *attr = pattr;
+ return (0);
}
-__weak_reference(_pthread_attr_setcreatesuspend_np, pthread_attr_setcreatesuspend_np);
+__weak_reference(_pthread_attr_setcreatesuspend_np, \
+ pthread_attr_setcreatesuspend_np);
int
_pthread_attr_setcreatesuspend_np(pthread_attr_t *attr)
{
- int ret;
- if (attr == NULL || *attr == NULL) {
- ret = EINVAL;
- } else {
- (*attr)->suspend = THR_CREATE_SUSPENDED;
- ret = 0;
- }
- return (ret);
+ if (attr == NULL || *attr == NULL)
+ return (EINVAL);
+
+ (*attr)->suspend = THR_CREATE_SUSPENDED;
+ return (0);
}
__weak_reference(_thr_attr_setdetachstate, pthread_attr_setdetachstate);
@@ -396,24 +346,17 @@ __weak_reference(_thr_attr_setdetachstate, _pthread_attr_setdetachstate);
int
_thr_attr_setdetachstate(pthread_attr_t *attr, int detachstate)
{
- int ret;
- /* Check for invalid arguments: */
if (attr == NULL || *attr == NULL ||
(detachstate != PTHREAD_CREATE_DETACHED &&
detachstate != PTHREAD_CREATE_JOINABLE))
- ret = EINVAL;
- else {
- /* Check if detached state: */
- if (detachstate == PTHREAD_CREATE_DETACHED)
- /* Set the detached flag: */
- (*attr)->flags |= PTHREAD_DETACHED;
- else
- /* Reset the detached flag: */
- (*attr)->flags &= ~PTHREAD_DETACHED;
- ret = 0;
- }
- return (ret);
+ return (EINVAL);
+
+ if (detachstate == PTHREAD_CREATE_DETACHED)
+ (*attr)->flags |= PTHREAD_DETACHED;
+ else
+ (*attr)->flags &= ~PTHREAD_DETACHED;
+ return (0);
}
__weak_reference(_thr_attr_setguardsize, pthread_attr_setguardsize);
@@ -422,17 +365,12 @@ __weak_reference(_thr_attr_setguardsize, _pthread_attr_setguardsize);
int
_thr_attr_setguardsize(pthread_attr_t *attr, size_t guardsize)
{
- int ret;
- /* Check for invalid arguments. */
if (attr == NULL || *attr == NULL)
- ret = EINVAL;
- else {
- /* Save the stack size. */
- (*attr)->guardsize_attr = guardsize;
- ret = 0;
- }
- return (ret);
+ return (EINVAL);
+
+ (*attr)->guardsize_attr = guardsize;
+ return (0);
}
__weak_reference(_thr_attr_setinheritsched, pthread_attr_setinheritsched);
@@ -441,17 +379,16 @@ __weak_reference(_thr_attr_setinheritsched, _pthread_attr_setinheritsched);
int
_thr_attr_setinheritsched(pthread_attr_t *attr, int sched_inherit)
{
- int ret = 0;
- if ((attr == NULL) || (*attr == NULL))
- ret = EINVAL;
- else if (sched_inherit != PTHREAD_INHERIT_SCHED &&
- sched_inherit != PTHREAD_EXPLICIT_SCHED)
- ret = ENOTSUP;
- else
- (*attr)->sched_inherit = sched_inherit;
+ if (attr == NULL || *attr == NULL)
+ return (EINVAL);
+
+ if (sched_inherit != PTHREAD_INHERIT_SCHED &&
+ sched_inherit != PTHREAD_EXPLICIT_SCHED)
+ return (ENOTSUP);
- return (ret);
+ (*attr)->sched_inherit = sched_inherit;
+ return (0);
}
__weak_reference(_thr_attr_setschedparam, pthread_attr_setschedparam);
@@ -463,7 +400,7 @@ _thr_attr_setschedparam(pthread_attr_t * __restrict attr,
{
int policy;
- if ((attr == NULL) || (*attr == NULL))
+ if (attr == NULL || *attr == NULL)
return (EINVAL);
if (param == NULL)
@@ -474,7 +411,7 @@ _thr_attr_setschedparam(pthread_attr_t * __restrict attr,
if (policy == SCHED_FIFO || policy == SCHED_RR) {
if (param->sched_priority < _thr_priorities[policy-1].pri_min ||
param->sched_priority > _thr_priorities[policy-1].pri_max)
- return (ENOTSUP);
+ return (ENOTSUP);
} else {
/*
* Ignore it for SCHED_OTHER now, patches for glib ports
@@ -494,17 +431,15 @@ __weak_reference(_thr_attr_setschedpolicy, _pthread_attr_setschedpolicy);
int
_thr_attr_setschedpolicy(pthread_attr_t *attr, int policy)
{
- int ret = 0;
- if ((attr == NULL) || (*attr == NULL))
- ret = EINVAL;
- else if ((policy < SCHED_FIFO) || (policy > SCHED_RR)) {
- ret = ENOTSUP;
- } else {
- (*attr)->sched_policy = policy;
- (*attr)->prio = _thr_priorities[policy-1].pri_default;
- }
- return (ret);
+ if (attr == NULL || *attr == NULL)
+ return (EINVAL);
+ if (policy < SCHED_FIFO || policy > SCHED_RR)
+ return (ENOTSUP);
+
+ (*attr)->sched_policy = policy;
+ (*attr)->prio = _thr_priorities[policy-1].pri_default;
+ return (0);
}
__weak_reference(_thr_attr_setscope, pthread_attr_setscope);
@@ -513,41 +448,33 @@ __weak_reference(_thr_attr_setscope, _pthread_attr_setscope);
int
_thr_attr_setscope(pthread_attr_t *attr, int contentionscope)
{
- int ret = 0;
-
- if ((attr == NULL) || (*attr == NULL)) {
- /* Return an invalid argument: */
- ret = EINVAL;
- } else if ((contentionscope != PTHREAD_SCOPE_PROCESS) &&
- (contentionscope != PTHREAD_SCOPE_SYSTEM)) {
- ret = EINVAL;
- } else if (contentionscope == PTHREAD_SCOPE_SYSTEM) {
+
+ if (attr == NULL || *attr == NULL ||
+ (contentionscope != PTHREAD_SCOPE_PROCESS &&
+ contentionscope != PTHREAD_SCOPE_SYSTEM))
+ return (EINVAL);
+
+ if (contentionscope == PTHREAD_SCOPE_SYSTEM)
(*attr)->flags |= contentionscope;
- } else {
+ else
(*attr)->flags &= ~PTHREAD_SCOPE_SYSTEM;
- }
- return (ret);
+ return (0);
}
__weak_reference(_pthread_attr_setstack, pthread_attr_setstack);
int
_pthread_attr_setstack(pthread_attr_t *attr, void *stackaddr,
- size_t stacksize)
+ size_t stacksize)
{
- int ret;
-
- /* Check for invalid arguments: */
- if (attr == NULL || *attr == NULL || stackaddr == NULL
- || stacksize < PTHREAD_STACK_MIN)
- ret = EINVAL;
- else {
- /* Save the stack address and stack size */
- (*attr)->stackaddr_attr = stackaddr;
- (*attr)->stacksize_attr = stacksize;
- ret = 0;
- }
- return (ret);
+
+ if (attr == NULL || *attr == NULL || stackaddr == NULL ||
+ stacksize < PTHREAD_STACK_MIN)
+ return (EINVAL);
+
+ (*attr)->stackaddr_attr = stackaddr;
+ (*attr)->stacksize_attr = stacksize;
+ return (0);
}
__weak_reference(_thr_attr_setstackaddr, pthread_attr_setstackaddr);
@@ -556,17 +483,12 @@ __weak_reference(_thr_attr_setstackaddr, _pthread_attr_setstackaddr);
int
_thr_attr_setstackaddr(pthread_attr_t *attr, void *stackaddr)
{
- int ret;
- /* Check for invalid arguments: */
if (attr == NULL || *attr == NULL || stackaddr == NULL)
- ret = EINVAL;
- else {
- /* Save the stack address: */
- (*attr)->stackaddr_attr = stackaddr;
- ret = 0;
- }
- return(ret);
+ return (EINVAL);
+
+ (*attr)->stackaddr_attr = stackaddr;
+ return (0);
}
__weak_reference(_thr_attr_setstacksize, pthread_attr_setstacksize);
@@ -575,17 +497,12 @@ __weak_reference(_thr_attr_setstacksize, _pthread_attr_setstacksize);
int
_thr_attr_setstacksize(pthread_attr_t *attr, size_t stacksize)
{
- int ret;
- /* Check for invalid arguments: */
if (attr == NULL || *attr == NULL || stacksize < PTHREAD_STACK_MIN)
- ret = EINVAL;
- else {
- /* Save the stack size: */
- (*attr)->stacksize_attr = stacksize;
- ret = 0;
- }
- return (ret);
+ return (EINVAL);
+
+ (*attr)->stacksize_attr = stacksize;
+ return (0);
}
static size_t
@@ -608,71 +525,69 @@ _get_kern_cpuset_size(void)
}
__weak_reference(_pthread_attr_setaffinity_np, pthread_attr_setaffinity_np);
+
int
_pthread_attr_setaffinity_np(pthread_attr_t *pattr, size_t cpusetsize,
- const cpuset_t *cpusetp)
+ const cpuset_t *cpusetp)
{
pthread_attr_t attr;
- int ret;
+ size_t kern_size;
if (pattr == NULL || (attr = (*pattr)) == NULL)
- ret = EINVAL;
- else {
- if (cpusetsize == 0 || cpusetp == NULL) {
- if (attr->cpuset != NULL) {
- free(attr->cpuset);
- attr->cpuset = NULL;
- attr->cpusetsize = 0;
- }
- return (0);
- }
- size_t kern_size = _get_kern_cpuset_size();
- /* Kernel rejects small set, we check it here too. */
- if (cpusetsize < kern_size)
- return (ERANGE);
- if (cpusetsize > kern_size) {
- /* Kernel checks invalid bits, we check it here too. */
- size_t i;
- for (i = kern_size; i < cpusetsize; ++i) {
- if (((const char *)cpusetp)[i])
- return (EINVAL);
- }
- }
- if (attr->cpuset == NULL) {
- attr->cpuset = calloc(1, kern_size);
- if (attr->cpuset == NULL)
- return (errno);
- attr->cpusetsize = kern_size;
+ return (EINVAL);
+
+ if (cpusetsize == 0 || cpusetp == NULL) {
+ if (attr->cpuset != NULL) {
+ free(attr->cpuset);
+ attr->cpuset = NULL;
+ attr->cpusetsize = 0;
}
- memcpy(attr->cpuset, cpusetp, kern_size);
- ret = 0;
+ return (0);
+ }
+
+ kern_size = _get_kern_cpuset_size();
+ /* Kernel rejects small set, we check it here too. */
+ if (cpusetsize < kern_size)
+ return (ERANGE);
+ if (cpusetsize > kern_size) {
+ /* Kernel checks invalid bits, we check it here too. */
+ size_t i;
+ for (i = kern_size; i < cpusetsize; ++i)
+ if (((const char *)cpusetp)[i] != 0)
+ return (EINVAL);
+ }
+ if (attr->cpuset == NULL) {
+ attr->cpuset = calloc(1, kern_size);
+ if (attr->cpuset == NULL)
+ return (errno);
+ attr->cpusetsize = kern_size;
}
- return (ret);
+ memcpy(attr->cpuset, cpusetp, kern_size);
+ return (0);
}
__weak_reference(_pthread_attr_getaffinity_np, pthread_attr_getaffinity_np);
+
int
_pthread_attr_getaffinity_np(const pthread_attr_t *pattr, size_t cpusetsize,
- cpuset_t *cpusetp)
+ cpuset_t *cpusetp)
{
pthread_attr_t attr;
- int ret = 0;
if (pattr == NULL || (attr = (*pattr)) == NULL)
- ret = EINVAL;
- else {
- /* Kernel rejects small set, we check it here too. */
- size_t kern_size = _get_kern_cpuset_size();
- if (cpusetsize < kern_size)
- return (ERANGE);
- if (attr->cpuset != NULL)
- memcpy(cpusetp, attr->cpuset, MIN(cpusetsize,
- attr->cpusetsize));
- else
- memset(cpusetp, -1, kern_size);
- if (cpusetsize > kern_size)
- memset(((char *)cpusetp) + kern_size, 0,
- cpusetsize - kern_size);
- }
- return (ret);
+ return (EINVAL);
+
+ /* Kernel rejects small set, we check it here too. */
+ size_t kern_size = _get_kern_cpuset_size();
+ if (cpusetsize < kern_size)
+ return (ERANGE);
+ if (attr->cpuset != NULL)
+ memcpy(cpusetp, attr->cpuset, MIN(cpusetsize,
+ attr->cpusetsize));
+ else
+ memset(cpusetp, -1, kern_size);
+ if (cpusetsize > kern_size)
+ memset(((char *)cpusetp) + kern_size, 0,
+ cpusetsize - kern_size);
+ return (0);
}