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-rw-r--r--lib/libpthread/include/pthread.h8
-rw-r--r--lib/libpthread/man/Makefile.inc7
-rw-r--r--lib/libpthread/man/pthread_spin_init.388
-rw-r--r--lib/libpthread/man/pthread_spin_lock.383
-rw-r--r--lib/libpthread/man/pthread_spin_unlock.359
-rw-r--r--lib/libpthread/man/pthreads.322
-rw-r--r--lib/librthread/Makefile3
-rw-r--r--lib/librthread/rthread.h7
-rw-r--r--lib/librthread/rthread_spin_lock.c115
-rw-r--r--lib/librthread/shlib_version2
-rw-r--r--regress/lib/libpthread/Makefile4
-rw-r--r--regress/lib/libpthread/spinlock/Makefile5
-rw-r--r--regress/lib/libpthread/spinlock/spinlock.c50
13 files changed, 444 insertions, 9 deletions
diff --git a/lib/libpthread/include/pthread.h b/lib/libpthread/include/pthread.h
index c21f753de12..0fc9f375516 100644
--- a/lib/libpthread/include/pthread.h
+++ b/lib/libpthread/include/pthread.h
@@ -1,4 +1,4 @@
-/* $OpenBSD: pthread.h,v 1.35 2012/04/14 12:07:49 kurt Exp $ */
+/* $OpenBSD: pthread.h,v 1.36 2012/05/03 09:07:17 pirofti Exp $ */
/*
* Copyright (c) 1993, 1994 by Chris Provenzano, proven@mit.edu
@@ -136,6 +136,7 @@ typedef struct pthread_rwlock *pthread_rwlock_t;
typedef struct pthread_rwlockattr *pthread_rwlockattr_t;
typedef struct pthread_barrier *pthread_barrier_t;
typedef struct pthread_barrierattr *pthread_barrierattr_t;
+typedef struct pthread_spinlock *pthread_spinlock_t;
/*
* Additional type definitions:
@@ -318,6 +319,11 @@ int pthread_barrierattr_init(pthread_barrierattr_t *);
int pthread_barrierattr_destroy(pthread_barrierattr_t *);
int pthread_barrierattr_getpshared(pthread_barrierattr_t *, int *);
int pthread_barrierattr_setpshared(pthread_barrierattr_t *, int);
+int pthread_spin_init(pthread_spinlock_t *, int);
+int pthread_spin_destroy(pthread_spinlock_t *);
+int pthread_spin_trylock(pthread_spinlock_t *);
+int pthread_spin_lock(pthread_spinlock_t *);
+int pthread_spin_unlock(pthread_spinlock_t *);
__END_DECLS
#endif /* _PTHREAD_H_ */
diff --git a/lib/libpthread/man/Makefile.inc b/lib/libpthread/man/Makefile.inc
index de389a96d93..80f85126f51 100644
--- a/lib/libpthread/man/Makefile.inc
+++ b/lib/libpthread/man/Makefile.inc
@@ -1,4 +1,4 @@
-# $OpenBSD: Makefile.inc,v 1.32 2012/04/11 10:18:46 pirofti Exp $
+# $OpenBSD: Makefile.inc,v 1.33 2012/05/03 09:07:17 pirofti Exp $
# $FreeBSD: Makefile.inc,v 1.6 1999/08/28 00:03:02 peter Exp $
# POSIX thread man files
@@ -58,6 +58,9 @@ MAN+= \
pthread_set_name_np.3 \
pthread_setspecific.3 \
pthread_sigmask.3 \
+ pthread_spin_init.3 \
+ pthread_spin_lock.3 \
+ pthread_spin_unlock.3 \
pthread_stackseg_np.3 \
pthread_testcancel.3 \
pthread_yield.3 \
@@ -107,6 +110,8 @@ MLINKS+=flockfile.3 funlockfile.3 \
pthread_mutexattr.3 pthread_mutexattr_settype.3 \
pthread_schedparam.3 pthread_getschedparam.3 \
pthread_schedparam.3 pthread_setschedparam.3 \
+ pthread_spin_init.3 pthread_spin_destroy.3 \
+ pthread_spin_lock.3 pthread_spin_trylock.3 \
pthread_testcancel.3 pthread_setcancelstate.3 \
pthread_testcancel.3 pthread_setcanceltype.3 \
pthread_getconcurrency.3 pthread_setconcurrency.3 \
diff --git a/lib/libpthread/man/pthread_spin_init.3 b/lib/libpthread/man/pthread_spin_init.3
new file mode 100644
index 00000000000..fff74a90552
--- /dev/null
+++ b/lib/libpthread/man/pthread_spin_init.3
@@ -0,0 +1,88 @@
+.\" $OpenBSD: pthread_spin_init.3,v 1.1 2012/05/03 09:07:17 pirofti Exp $
+.\"
+.\" Copyright (c) 2012 Paul Irofti <pirofti@openbsd.org>
+.\"
+.\" Permission to use, copy, modify, and distribute this software for any
+.\" purpose with or without fee is hereby granted, provided that the above
+.\" copyright notice and this permission notice appear in all copies.
+.\"
+.\" THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
+.\" WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
+.\" MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
+.\" ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
+.\" WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
+.\" ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
+.\" OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
+.\"
+.\"
+.Dd $Mdocdate: May 3 2012 $
+.Dt PTHREAD_SPIN_INIT 3
+.Os
+.Sh NAME
+.Nm pthread_spin_init ,
+.Nm pthread_spin_destroy
+.Nd initialize and destroy a spinlock object
+.Sh SYNOPSIS
+.Fd #include <pthread.h>
+.Ft int
+.Fn pthread_spin_init "pthread_spinlock_t *lock" "int pshared"
+.Ft int
+.Fn pthread_spin_destroy "pthread_spinlock_t *lock"
+.Sh DESCRIPTION
+The
+.Fn pthread_spin_init
+function creates a new spinlock object, with sharing attributes specified by
+.Fa pshared .
+.Pp
+The
+.Fn pthread_spin_destroy
+function frees the resources allocated for the
+.Fa lock .
+.Sh RETURN VALUES
+If successful,
+.Fn pthread_spin_init
+and
+.Fn pthread_spin_destroy
+return zero; otherwise an error number is returned to indicate the error.
+.Sh ERRORS
+.Fn pthread_spin_init
+will fail if:
+.Bl -tag -width Er
+.It Bq Er EINVAL
+The value specified by
+.Fa lock
+is invalid.
+.It Bq Er ENOMEM
+The process cannot allocate enough memory to create another spinlock object.
+.It Bq Er ENOTSUP
+The shared attributes specified by
+.Fa pshared
+are not supported by the current implementation.
+.El
+.Pp
+.Fn pthread_spin_destroy
+will fail if:
+.Bl -tag -width Er
+.It Bq Er EINVAL
+The value specified by
+.Fa lock
+is invalid.
+.It Bq Er EBUSY
+The lock is still in use.
+.El
+.Sh SEE ALSO
+.Xr pthread_spin_lock 3 ,
+.Xr pthread_spin_unlock 3
+.Sh STANDARDS
+.Fn pthread_spin_init
+and
+.Fn pthread_spin_destroy
+conform to
+.St -p1003.1-2008 .
+.Sh BUGS
+Currently only
+.Dv PTHREAD_PROCESS_PRIVATE
+spinlocks are supported and the pshared attribute is
+always set that way.
+Any attempts to initialize it to a different value will trigger
+.Er ENOTSUP .
diff --git a/lib/libpthread/man/pthread_spin_lock.3 b/lib/libpthread/man/pthread_spin_lock.3
new file mode 100644
index 00000000000..b12ed33f80f
--- /dev/null
+++ b/lib/libpthread/man/pthread_spin_lock.3
@@ -0,0 +1,83 @@
+.\" $OpenBSD: pthread_spin_lock.3,v 1.1 2012/05/03 09:07:17 pirofti Exp $
+.\"
+.\" Copyright (c) 2012 Paul Irofti <pirofti@openbsd.org>
+.\"
+.\" Permission to use, copy, modify, and distribute this software for any
+.\" purpose with or without fee is hereby granted, provided that the above
+.\" copyright notice and this permission notice appear in all copies.
+.\"
+.\" THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
+.\" WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
+.\" MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
+.\" ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
+.\" WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
+.\" ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
+.\" OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
+.\"
+.\"
+.Dd $Mdocdate: May 3 2012 $
+.Dt PTHREAD_SPIN_LOCK 3
+.Os
+.Sh NAME
+.Nm pthread_spin_lock ,
+.Nm pthread_spin_trylock
+.Nd lock a spinlock object
+.Sh SYNOPSIS
+.Fd #include <pthread.h>
+.Ft int
+.Fn pthread_spin_lock "pthread_spinlock_t *lock"
+.Ft int
+.Fn pthread_spin_trylock "pthread_spinlock_t *lock"
+.Sh DESCRIPTION
+The
+.Fn pthread_spin_lock
+function locks the spinlock referenced by
+.Fa lock .
+The calling thread will acquire the lock if it's not owned by another thread.
+Otherwise it will spin until the lock becomes available.
+.Pp
+The
+.Fn pthread_spin_trylock
+function will acquire the lock if the
+.Fa lock
+is not owned by another thread.
+Otherwise it will fail.
+.Sh RETURN VALUES
+If successful,
+.Fn pthread_spin_lock
+and
+.Fn pthread_spin_trylock
+return zero; otherwise an error number is returned to indicate the error.
+.Sh ERRORS
+.Fn pthread_spin_lock
+will fail if:
+.Bl -tag -width Er
+.It Bq Er EINVAL
+The value specified by
+.Fa lock
+is invalid.
+.It Bq Er EDEADLK
+A deadlock condition was detected.
+.El
+.Pp
+.Fn pthread_spin_trylock
+will fail if:
+.Bl -tag -width Er
+.It Bq Er EINVAL
+The value specified by
+.Fa lock
+is invalid.
+.It Bq Er EBUSY
+The lock is still in use.
+.It Bq Er EDEADLK
+A deadlock condition was detected.
+.El
+.Sh SEE ALSO
+.Xr pthread_spin_init 3 ,
+.Xr pthread_spin_unlock 3
+.Sh STANDARDS
+.Fn pthread_spin_lock
+and
+.Fn pthread_spin_trylock
+conform to
+.St -p1003.1-2008 .
diff --git a/lib/libpthread/man/pthread_spin_unlock.3 b/lib/libpthread/man/pthread_spin_unlock.3
new file mode 100644
index 00000000000..af443ce34a4
--- /dev/null
+++ b/lib/libpthread/man/pthread_spin_unlock.3
@@ -0,0 +1,59 @@
+.\" $OpenBSD: pthread_spin_unlock.3,v 1.1 2012/05/03 09:07:17 pirofti Exp $
+.\"
+.\" Copyright (c) 2012 Paul Irofti <pirofti@openbsd.org>
+.\"
+.\" Permission to use, copy, modify, and distribute this software for any
+.\" purpose with or without fee is hereby granted, provided that the above
+.\" copyright notice and this permission notice appear in all copies.
+.\"
+.\" THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
+.\" WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
+.\" MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
+.\" ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
+.\" WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
+.\" ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
+.\" OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
+.\"
+.\"
+.Dd $Mdocdate: May 3 2012 $
+.Dt PTHREAD_SPIN_UNLOCK 3
+.Os
+.Sh NAME
+.Nm pthread_spin_unlock
+.Nd unlock a spinlock object
+.Sh SYNOPSIS
+.Fd #include <pthread.h>
+.Ft int
+.Fn pthread_spin_unlock "pthread_spinlock_t *lock"
+.Sh DESCRIPTION
+The
+.Fn pthread_spin_unlock
+function releases the spin lock referenced by
+.Fa lock
+which was locked via the
+.Fn pthread_spin_lock
+or
+.Fn pthread_spin_trylock
+functions.
+.Sh RETURN VALUES
+If successful,
+.Fn pthread_spin_unlock
+returns zero; otherwise an error number is returned to indicate the error.
+.Sh ERRORS
+.Fn pthread_spin_unlock
+will fail if:
+.Bl -tag -width Er
+.It Bq Er EINVAL
+The value specified by
+.Fa lock
+is invalid.
+.It Bq Er EPERM
+The lock is not owned by the calling thread.
+.El
+.Sh SEE ALSO
+.Xr pthread_spin_init 3 ,
+.Xr pthread_spin_lock 3
+.Sh STANDARDS
+.Fn pthread_spin_unlock
+conforms to
+.St -p1003.1-2008 .
diff --git a/lib/libpthread/man/pthreads.3 b/lib/libpthread/man/pthreads.3
index 8bfd7bfb3b4..2e439ac44c9 100644
--- a/lib/libpthread/man/pthreads.3
+++ b/lib/libpthread/man/pthreads.3
@@ -1,6 +1,6 @@
-.\" $OpenBSD: pthreads.3,v 1.35 2012/04/11 18:40:10 jmc Exp $
+.\" $OpenBSD: pthreads.3,v 1.36 2012/05/03 09:07:17 pirofti Exp $
.\" David Leonard <d@openbsd.org>, 1998. Public domain.
-.Dd $Mdocdate: April 11 2012 $
+.Dd $Mdocdate: May 3 2012 $
.Dt PTHREADS 3
.Os
.Sh NAME
@@ -236,6 +236,21 @@ Get the process-shared attribute of the barrier attribute's object.
.It Fn pthread_barrierattr_setpshared
Set the process-shared attribute of the barrier attribute's object.
.El
+.Ss Thread Spinlock Routines
+The functions available are as follows:
+.Pp
+.Bl -tag -width "pthread_spin_trylock()" -compact
+.It Fn pthread_spin_init
+Initialize a spinlock object.
+.It Fn pthread_spin_destroy
+Destroy a spinlock object.
+.It Fn pthread_spin_lock
+Lock a spinlock object.
+.It Fn pthread_spin_trylock
+Attempt to lock a spinlock without blocking.
+.It Fn pthread_spin_unlock
+Unlock a spinlock object.
+.El
.Ss Thread Routines
The functions available are as follows:
.Pp
@@ -565,6 +580,9 @@ environment variable.
.Xr pthread_set_name_np 3 ,
.Xr pthread_setspecific 3 ,
.Xr pthread_sigmask 3 ,
+.Xr pthread_spin_init 3 ,
+.Xr pthread_spin_lock 3 ,
+.Xr pthread_spin_unlock 3 ,
.Xr pthread_stackseg_np 3 ,
.Xr pthread_testcancel 3 ,
.Xr pthread_yield 3
diff --git a/lib/librthread/Makefile b/lib/librthread/Makefile
index b36e2c80a2b..3a7e8aa2484 100644
--- a/lib/librthread/Makefile
+++ b/lib/librthread/Makefile
@@ -1,4 +1,4 @@
-# $OpenBSD: Makefile,v 1.29 2012/04/11 10:18:46 pirofti Exp $
+# $OpenBSD: Makefile,v 1.30 2012/05/03 09:07:17 pirofti Exp $
# For ``COMPILER_VERSION''
.include <bsd.own.mk>
@@ -38,6 +38,7 @@ SRCS= rthread.c \
rthread_sem.c \
rthread_sig.c \
rthread_stack.c \
+ rthread_spin_lock.c \
rthread_sync.c \
rthread_tls.c \
sched_prio.c
diff --git a/lib/librthread/rthread.h b/lib/librthread/rthread.h
index 1ac8c771c65..4cb86446491 100644
--- a/lib/librthread/rthread.h
+++ b/lib/librthread/rthread.h
@@ -1,4 +1,4 @@
-/* $OpenBSD: rthread.h,v 1.38 2012/04/11 10:18:46 pirofti Exp $ */
+/* $OpenBSD: rthread.h,v 1.39 2012/05/03 09:07:17 pirofti Exp $ */
/*
* Copyright (c) 2004,2005 Ted Unangst <tedu@openbsd.org>
* All Rights Reserved.
@@ -134,6 +134,11 @@ struct pthread_barrierattr {
int pshared;
};
+struct pthread_spinlock {
+ _spinlock_lock_t lock;
+ pthread_t owner;
+};
+
struct pthread {
struct sem donesem;
#if TLS_VARIANT == 1
diff --git a/lib/librthread/rthread_spin_lock.c b/lib/librthread/rthread_spin_lock.c
new file mode 100644
index 00000000000..f89332205ba
--- /dev/null
+++ b/lib/librthread/rthread_spin_lock.c
@@ -0,0 +1,115 @@
+/* $OpenBSD: rthread_spin_lock.c,v 1.1 2012/05/03 09:07:17 pirofti Exp $ */
+/*
+ * Copyright (c) 2012 Paul Irofti <pirofti@openbsd.org>
+ *
+ * Permission to use, copy, modify, and/or distribute this software for any
+ * purpose with or without fee is hereby granted, provided that the above
+ * copyright notice and this permission notice appear in all copies.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
+ * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
+ * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
+ * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
+ * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
+ * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
+ * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
+ */
+
+#include <errno.h>
+#include <stdlib.h>
+
+#include <pthread.h>
+
+#include "rthread.h"
+
+int
+pthread_spin_init(pthread_spinlock_t *lock, int pshared)
+{
+ pthread_spinlock_t l = NULL;
+
+ if (lock == NULL) {
+ return (EINVAL);
+ }
+ if (pshared != PTHREAD_PROCESS_PRIVATE) {
+ return (ENOTSUP);
+ }
+
+ l = calloc(1, sizeof *l);
+ if (l == NULL) {
+ return (ENOMEM);
+ }
+ l->lock = _SPINLOCK_UNLOCKED;
+ *lock = l;
+ return (0);
+}
+
+int
+pthread_spin_destroy(pthread_spinlock_t *lock)
+{
+ if (lock == NULL || *lock == NULL) {
+ return (EINVAL);
+ }
+ if ((*lock)->owner != NULL) {
+ return (EBUSY);
+ }
+
+ free(*lock);
+ *lock = NULL;
+ return (0);
+}
+
+int
+pthread_spin_trylock(pthread_spinlock_t *lock)
+{
+ pthread_t self = pthread_self();
+ pthread_spinlock_t l;
+
+ if (lock == NULL || *lock == NULL) {
+ return (EINVAL);
+ }
+ l = *lock;
+ if (l->owner == self) {
+ return (EDEADLK);
+ }
+ if (_atomic_lock(&l->lock)) {
+ return (EBUSY);
+ }
+ l->owner = self;
+ return (0);
+}
+
+int
+pthread_spin_lock(pthread_spinlock_t *lock)
+{
+ pthread_t self = pthread_self();
+ pthread_spinlock_t l;
+
+ if (lock == NULL || *lock == NULL) {
+ return (EINVAL);
+ }
+ l = *lock;
+ if (l->owner == self) {
+ return (EDEADLK);
+ }
+ _spinlock(&l->lock);
+ l->owner = self;
+ return (0);
+}
+
+int
+pthread_spin_unlock(pthread_spinlock_t *lock)
+{
+ pthread_t self = pthread_self();
+ pthread_spinlock_t l;
+
+ if (lock == NULL || *lock == NULL) {
+ return (EINVAL);
+ }
+ l = *lock;
+ if (l->owner != self) {
+ return (EPERM);
+ }
+ l->owner = NULL;
+ _spinunlock(&l->lock);
+ return (0);
+}
diff --git a/lib/librthread/shlib_version b/lib/librthread/shlib_version
index b9229d35170..998729533f3 100644
--- a/lib/librthread/shlib_version
+++ b/lib/librthread/shlib_version
@@ -1,2 +1,2 @@
major=15
-minor=1
+minor=2
diff --git a/regress/lib/libpthread/Makefile b/regress/lib/libpthread/Makefile
index 8b5f85d70de..5d42f1ef5cc 100644
--- a/regress/lib/libpthread/Makefile
+++ b/regress/lib/libpthread/Makefile
@@ -1,4 +1,4 @@
-# $OpenBSD: Makefile,v 1.38 2012/04/13 19:04:09 kurt Exp $
+# $OpenBSD: Makefile,v 1.39 2012/05/03 09:07:17 pirofti Exp $
# disabled because it requires a buggy behavior that uthread had:
# dup2_race
@@ -11,7 +11,7 @@ SUBDIR= barrier blocked_close blocked_dup2 blocked_fifo blocked_shutdown \
pthread_rwlock pthread_specific \
readdir restart select semaphore setjmp setsockopt sigdeliver siginfo \
siginterrupt signal signals signodefer sigsuspend sigwait sleep \
- socket stack stdarg stdio switch system
+ socket spinlock stack stdarg stdio switch system
# Not available or disabled: fcntl, getaddrinfo, pause, pw, sigmask, stdfiles
diff --git a/regress/lib/libpthread/spinlock/Makefile b/regress/lib/libpthread/spinlock/Makefile
new file mode 100644
index 00000000000..0c029e43dc0
--- /dev/null
+++ b/regress/lib/libpthread/spinlock/Makefile
@@ -0,0 +1,5 @@
+# $OpenBSD: Makefile,v 1.1 2012/05/03 09:07:17 pirofti Exp $
+
+PROG= spinlock
+
+.include <bsd.regress.mk>
diff --git a/regress/lib/libpthread/spinlock/spinlock.c b/regress/lib/libpthread/spinlock/spinlock.c
new file mode 100644
index 00000000000..dadfe14d1f0
--- /dev/null
+++ b/regress/lib/libpthread/spinlock/spinlock.c
@@ -0,0 +1,50 @@
+/* $OpenBSD: spinlock.c,v 1.1 2012/05/03 09:07:17 pirofti Exp $ */
+/* Paul Irofti <pirofti@openbsd.org>, 2012. Public Domain. */
+
+#include <stdio.h>
+#include <stdlib.h>
+
+#include <errno.h>
+#include <pthread.h>
+#include <unistd.h>
+
+#include "test.h"
+
+void *
+foo(void *arg)
+{
+ int rc = 0;
+ pthread_spinlock_t l = (pthread_spinlock_t)arg;
+ rc = pthread_spin_trylock(&l);
+ if (rc != 0 && rc != EBUSY) {
+ PANIC("pthread_trylock returned %d", rc);
+ }
+ if (rc == 0) {
+ CHECKr(pthread_spin_unlock(&l));
+ }
+ CHECKr(pthread_spin_lock(&l));
+ CHECKr(pthread_spin_unlock(&l));
+ return NULL;
+}
+
+int main()
+{
+ int i;
+ pthread_t thr[10];
+ pthread_spinlock_t l;
+
+ _CHECK(pthread_spin_init(&l, PTHREAD_PROCESS_SHARED), == ENOTSUP,
+ strerror(_x));
+
+ CHECKr(pthread_spin_init(&l, PTHREAD_PROCESS_PRIVATE));
+ for (i = 0; i < 10; i++) {
+ printf("Thread %d started\n", i);
+ CHECKr(pthread_create(&thr[i], NULL, foo, (void *)l));
+ }
+ for (i = 0; i < 10; i++) {
+ CHECKr(pthread_join(thr[i], NULL));
+ }
+ CHECKr(pthread_spin_destroy(&l));
+
+ SUCCEED;
+}
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