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authorUlrich Drepper <drepper@redhat.com>2003-05-10 05:36:37 +0000
committerUlrich Drepper <drepper@redhat.com>2003-05-10 05:36:37 +0000
commit949ec7640747878988b3f8019a7b7f98c10ab3ac (patch)
tree35994dc52f7f30189e655666a5de0f37cb1a23e4 /nptl
parent880867a475b1016f892a1248a3fce693406bf1f1 (diff)
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Update.
* posix/sched.h: Change prototypes of sched_getaffinity and sched_setaffinity. Define CPU_SET, CPU_CLR, CPU_ISSET, and CPU_ZERO. * sysdeps/generic/sched_getaffinity.c: Adjust definition. * sysdeps/generic/sched_setaffinity.c: Likewise. * sysdeps/generic/bits/sched.h: Define __CPU_SETSIZE, __NCPUBITS, __CPUELT, __CPUMASK, cpu_set_t, __cpu_mask, __CPU_ZERO, __CPU_SET, __CPU_CLR, and __CPU_ISSET. * sysdeps/unix/sysv/linux/bits/sched.h: Likewise. * sysdeps/unix/sysv/linux/sched_getaffinity.c: New file. * sysdeps/unix/sysv/linux/sched_setaffinity.c: New file. * include/atomic.h (atomic_exchange_acq): Renamed from atomic_exchange. (atomic_exchange_rel): New #define. * sysdeps/ia64/bits/atomic.h: Likewise. * sysdeps/i386/i486/bits/atomic.h (atomic_exchange_acq): Renamed from atomic_exchange. * sysdeps/m68k/m68020/bits/atomic.h: Likewise. * sysdeps/powerpc/bits/atomic.h: Likewise. * sysdeps/sparc/sparc32/sparcv9/bits/atomic.h: Likewise. * sysdeps/sparc/sparc64/bits/atomic.h: Likewise. * sysdeps/x86_64/bits/atomic.h: Likewise. * csu/tst-atomic.c: Use atomic_exchange_acq instead of atomic_exchange.
Diffstat (limited to 'nptl')
-rw-r--r--nptl/ChangeLog21
-rw-r--r--nptl/Makefile5
-rw-r--r--nptl/Versions3
-rw-r--r--nptl/sysdeps/pthread/pthread.h10
-rw-r--r--nptl/sysdeps/unix/sysv/linux/i386/lowlevellock.h60
-rw-r--r--nptl/sysdeps/unix/sysv/linux/ia64/lowlevellock.h2
-rw-r--r--nptl/sysdeps/unix/sysv/linux/lowlevellock.c2
-rw-r--r--nptl/sysdeps/unix/sysv/linux/pthread_getaffinity.c43
-rw-r--r--nptl/sysdeps/unix/sysv/linux/pthread_setaffinity.c38
-rw-r--r--nptl/tst-sem6.c81
10 files changed, 231 insertions, 34 deletions
diff --git a/nptl/ChangeLog b/nptl/ChangeLog
index f46c221c9a..e01a48c05d 100644
--- a/nptl/ChangeLog
+++ b/nptl/ChangeLog
@@ -1,5 +1,26 @@
2003-05-09 Ulrich Drepper <drepper@redhat.com>
+ * tst-sem6.c: New file.
+ * Makefile (tests): Add tst-sem6.
+
+ * sysdeps/unix/sysv/linux/ia64/lowlevellock.h (___lll_mutex_unlock):
+ Use atomic_exchange_rel instead of atomic_exchange.
+ * sysdeps/unix/sysv/linux/lowlevellock.c (lll_unlock_wake_cb):
+ Likewise.
+
+ * sysdeps/unix/sysv/linux/i386/lowlevellock.h: Improve quality of
+ code for lll_futex_wait and lll_futex_wake in static apps. Use
+ vsyscall is possible.
+
+ * sysdeps/unix/sysv/linux/pthread_getaffinity.c: New file.
+ * sysdeps/unix/sysv/linux/pthread_setaffinity.c: New file.
+ * sysdeps/pthread/pthread.h: Declare pthread_getaffinity_np and
+ pthread_setaffinity_np.
+ * Versions [libpthread] (GLIBC_2.3.3): Add pthread_getaffinity_np
+ and pthread_setaffinity_np.
+ * Makefile (libpthread-routines): Add pthread_getaffinity and
+ pthread_setaffinity.
+
* allocatestack.c (allocate_stack): If ARCH_RETRY_MMAP is defined,
use it in case mmap to allocate the stack fails.
* sysdeps/unix/sysv/linux/x86_64/Makefile: Don't define
diff --git a/nptl/Makefile b/nptl/Makefile
index a0bd3640f5..4260c7026c 100644
--- a/nptl/Makefile
+++ b/nptl/Makefile
@@ -115,7 +115,8 @@ libpthread-routines = init events version \
flockfile ftrylockfile funlockfile \
sigaction \
herrno res pt-allocrtsig \
- pthread_kill_other_threads
+ pthread_kill_other_threads \
+ pthread_getaffinity pthread_setaffinity
libpthread-shared-only-routines = version pt-allocrtsig
libpthread-static-only-routines = pthread_atfork
@@ -148,7 +149,7 @@ tests = tst-attr1 tst-attr2 \
tst-rwlock11 \
tst-once1 tst-once2 tst-once3 tst-once4 \
tst-key1 tst-key2 tst-key3 tst-key4 \
- tst-sem1 tst-sem2 tst-sem3 tst-sem4 tst-sem5 \
+ tst-sem1 tst-sem2 tst-sem3 tst-sem4 tst-sem5 tst-sem6 \
tst-barrier1 tst-barrier2 tst-barrier3 \
tst-align \
tst-basic1 tst-basic2 tst-basic3 tst-basic4 tst-basic5 tst-basic6 \
diff --git a/nptl/Versions b/nptl/Versions
index 4f52eb66f3..c602d5e048 100644
--- a/nptl/Versions
+++ b/nptl/Versions
@@ -216,6 +216,9 @@ libpthread {
__pthread_register_cancel; __pthread_unregister_cancel;
__pthread_register_cancel_defer; __pthread_unregister_cancel_restore;
__pthread_unwind_next;
+
+ # New affinity interfaces.
+ pthread_getaffinity_np; pthread_setaffinity_np;
}
GLIBC_PRIVATE {
diff --git a/nptl/sysdeps/pthread/pthread.h b/nptl/sysdeps/pthread/pthread.h
index d06dd8f45a..c0375ae223 100644
--- a/nptl/sysdeps/pthread/pthread.h
+++ b/nptl/sysdeps/pthread/pthread.h
@@ -355,6 +355,16 @@ extern int pthread_setconcurrency (int __level) __THROW;
might be differently implemented in the case of a m-on-n thread
implementation. */
extern int pthread_yield (void) __THROW;
+
+
+/* Limit specified thread TH to run only on the processors represented
+ in CPUSET. */
+extern int pthread_setaffinity_np (pthread_t __th, const cpu_set_t *__cpuset)
+ __THROW;
+
+/* Get bit set in CPUSET representing the processors TH can run on. */
+extern int pthread_getaffinity_np (pthread_t __th, cpu_set_t *__cpuset)
+ __THROW;
#endif
diff --git a/nptl/sysdeps/unix/sysv/linux/i386/lowlevellock.h b/nptl/sysdeps/unix/sysv/linux/i386/lowlevellock.h
index 2318edfcdb..5fd50b97db 100644
--- a/nptl/sysdeps/unix/sysv/linux/i386/lowlevellock.h
+++ b/nptl/sysdeps/unix/sysv/linux/i386/lowlevellock.h
@@ -41,17 +41,34 @@
#define LLL_MUTEX_LOCK_INITIALIZER (0)
-#define LLL_ENTER_KERNEL "int $0x80\n\t"
+#ifdef PIC
+# define LLL_EBX_LOAD "xchgl %2, %%ebx\n"
+# define LLL_EBX_REG "D"
+#else
+# define LLL_EBX_LOAD
+# define LLL_EBX_REG "b"
+#endif
+
+#ifdef I386_USE_SYSENTER
+# ifdef SHARED
+# define LLL_ENTER_KERNEL "call *%%gs:%P6\n\t"
+# else
+# define LLL_ENTER_KERNEL "call *_dl_sysinfo\n\t"
+# endif
+#else
+# define LLL_ENTER_KERNEL "int $0x80\n\t"
+#endif
+
#define lll_futex_wait(futex, val) \
do { \
int __ignore; \
register __typeof (val) _val asm ("edx") = (val); \
- __asm __volatile ("xchgl %2, %%ebx\n\t" \
+ __asm __volatile (LLL_EBX_LOAD \
LLL_ENTER_KERNEL \
- "xchgl %2, %%ebx" \
+ LLL_EBX_LOAD \
: "=a" (__ignore) \
- : "0" (SYS_futex), "D" (&futex), "S" (0), \
+ : "0" (SYS_futex), LLL_EBX_REG (&futex), "S" (0), \
"c" (FUTEX_WAIT), "d" (_val), \
"i" (offsetof (tcbhead_t, sysinfo))); \
} while (0)
@@ -61,12 +78,13 @@
do { \
int __ignore; \
register __typeof (nr) _nr asm ("edx") = (nr); \
- __asm __volatile ("xchgl %2, %%ebx\n\t" \
+ __asm __volatile (LLL_EBX_LOAD \
LLL_ENTER_KERNEL \
- "xchgl %2, %%ebx" \
+ LLL_EBX_LOAD \
: "=a" (__ignore) \
- : "0" (SYS_futex), "D" (&futex), "c" (FUTEX_WAKE), \
- "d" (_nr), "i" (0), \
+ : "0" (SYS_futex), LLL_EBX_REG (&futex), \
+ "c" (FUTEX_WAKE), "d" (_nr), \
+ "i" (0) /* phony, to align next arg's number */, \
"i" (offsetof (tcbhead_t, sysinfo))); \
} while (0)
@@ -277,37 +295,19 @@ extern int lll_unlock_wake_cb (int *__futex) attribute_hidden;
afterwards.
The macro parameter must not have any side effect. */
-#ifdef PIC
-# define LLL_TID_EBX_LOAD "xchgl %2, %%ebx\n"
-# define LLL_TID_EBX_REG "D"
-#else
-# define LLL_TID_EBX_LOAD
-# define LLL_TID_EBX_REG "b"
-#endif
-
-#ifdef I386_USE_SYSENTER
-# ifdef SHARED
-# define LLL_TID_ENTER_KERNEL "call *%%gs:%P6\n\t"
-# else
-# define LLL_TID_ENTER_KERNEL "call *_dl_sysinfo\n\t"
-# endif
-#else
-# define LLL_TID_ENTER_KERNEL "int $0x80\n\t"
-#endif
-
#define lll_wait_tid(tid) \
do { \
int __ignore; \
register __typeof (tid) _tid asm ("edx") = (tid); \
if (_tid != 0) \
- __asm __volatile (LLL_TID_EBX_LOAD \
+ __asm __volatile (LLL_EBX_LOAD \
"1:\tmovl %1, %%eax\n\t" \
- LLL_TID_ENTER_KERNEL \
+ LLL_ENTER_KERNEL \
"cmpl $0, (%%ebx)\n\t" \
"jne,pn 1b\n\t" \
- LLL_TID_EBX_LOAD \
+ LLL_EBX_LOAD \
: "=&a" (__ignore) \
- : "i" (SYS_futex), LLL_TID_EBX_REG (&tid), "S" (0), \
+ : "i" (SYS_futex), LLL_EBX_REG (&tid), "S" (0), \
"c" (FUTEX_WAIT), "d" (_tid), \
"i" (offsetof (tcbhead_t, sysinfo))); \
} while (0)
diff --git a/nptl/sysdeps/unix/sysv/linux/ia64/lowlevellock.h b/nptl/sysdeps/unix/sysv/linux/ia64/lowlevellock.h
index 24cbfe8cc3..92c0b5c524 100644
--- a/nptl/sysdeps/unix/sysv/linux/ia64/lowlevellock.h
+++ b/nptl/sysdeps/unix/sysv/linux/ia64/lowlevellock.h
@@ -135,7 +135,7 @@ static inline void
__attribute__ ((always_inline))
__lll_mutex_unlock (int *futex)
{
- int val = atomic_exchange (futex, 0);
+ int val = atomic_exchange_rel (futex, 0);
if (__builtin_expect (val > 1, 0))
lll_futex_wake (futex, 1);
diff --git a/nptl/sysdeps/unix/sysv/linux/lowlevellock.c b/nptl/sysdeps/unix/sysv/linux/lowlevellock.c
index a5cf687612..db10573a45 100644
--- a/nptl/sysdeps/unix/sysv/linux/lowlevellock.c
+++ b/nptl/sysdeps/unix/sysv/linux/lowlevellock.c
@@ -83,7 +83,7 @@ hidden_proto (__lll_timedlock_wait)
int
lll_unlock_wake_cb (int *futex)
{
- int val = atomic_exchange (futex, 0);
+ int val = atomic_exchange_rel (futex, 0);
if (__builtin_expect (val > 1, 0))
lll_futex_wake (futex, 1);
diff --git a/nptl/sysdeps/unix/sysv/linux/pthread_getaffinity.c b/nptl/sysdeps/unix/sysv/linux/pthread_getaffinity.c
new file mode 100644
index 0000000000..70553d7e5f
--- /dev/null
+++ b/nptl/sysdeps/unix/sysv/linux/pthread_getaffinity.c
@@ -0,0 +1,43 @@
+/* Copyright (C) 2003 Free Software Foundation, Inc.
+ This file is part of the GNU C Library.
+ Contributed by Ulrich Drepper <drepper@redhat.com>, 2003.
+
+ The GNU C Library is free software; you can redistribute it and/or
+ modify it under the terms of the GNU Lesser General Public
+ License as published by the Free Software Foundation; either
+ version 2.1 of the License, or (at your option) any later version.
+
+ The GNU C Library is distributed in the hope that it will be useful,
+ but WITHOUT ANY WARRANTY; without even the implied warranty of
+ MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
+ Lesser General Public License for more details.
+
+ You should have received a copy of the GNU Lesser General Public
+ License along with the GNU C Library; if not, write to the Free
+ Software Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA
+ 02111-1307 USA. */
+
+#include <errno.h>
+#include <pthreadP.h>
+#include <string.h>
+#include <sysdep.h>
+#include <sys/types.h>
+
+
+int
+pthread_getaffinity_np (th, cpuset)
+ pthread_t th;
+ cpu_set_t *cpuset;
+{
+ struct pthread *pd = (struct pthread *) th;
+ INTERNAL_SYSCALL_DECL (err);
+ int res = INTERNAL_SYSCALL (sched_getaffinity, err, 3, pd->tid,
+ sizeof (cpu_set_t), cpuset);
+ if (INTERNAL_SYSCALL_ERROR_P (res, err))
+ return INTERNAL_SYSCALL_ERRNO (res, err);
+
+ /* Clean the rest of the memory the kernel didn't do. */
+ memset ((char *) cpuset + res, '\0', sizeof (cpu_set_t) - res);
+
+ return 0;
+}
diff --git a/nptl/sysdeps/unix/sysv/linux/pthread_setaffinity.c b/nptl/sysdeps/unix/sysv/linux/pthread_setaffinity.c
new file mode 100644
index 0000000000..7680068155
--- /dev/null
+++ b/nptl/sysdeps/unix/sysv/linux/pthread_setaffinity.c
@@ -0,0 +1,38 @@
+/* Copyright (C) 2003 Free Software Foundation, Inc.
+ This file is part of the GNU C Library.
+ Contributed by Ulrich Drepper <drepper@redhat.com>, 2003.
+
+ The GNU C Library is free software; you can redistribute it and/or
+ modify it under the terms of the GNU Lesser General Public
+ License as published by the Free Software Foundation; either
+ version 2.1 of the License, or (at your option) any later version.
+
+ The GNU C Library is distributed in the hope that it will be useful,
+ but WITHOUT ANY WARRANTY; without even the implied warranty of
+ MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
+ Lesser General Public License for more details.
+
+ You should have received a copy of the GNU Lesser General Public
+ License along with the GNU C Library; if not, write to the Free
+ Software Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA
+ 02111-1307 USA. */
+
+#include <errno.h>
+#include <pthreadP.h>
+#include <sysdep.h>
+#include <sys/types.h>
+
+
+int
+pthread_setaffinity_np (th, cpuset)
+ pthread_t th;
+ const cpu_set_t *cpuset;
+{
+ struct pthread *pd = (struct pthread *) th;
+ INTERNAL_SYSCALL_DECL (err);
+ int res = INTERNAL_SYSCALL (sched_setaffinity, err, 3, pd->tid,
+ sizeof (cpu_set_t), cpuset);
+ return (INTERNAL_SYSCALL_ERROR_P (res, err)
+ ? INTERNAL_SYSCALL_ERRNO (res, err)
+ : 0);
+}
diff --git a/nptl/tst-sem6.c b/nptl/tst-sem6.c
new file mode 100644
index 0000000000..49240d9628
--- /dev/null
+++ b/nptl/tst-sem6.c
@@ -0,0 +1,81 @@
+/* Copyright (C) 2003 Free Software Foundation, Inc.
+ This file is part of the GNU C Library.
+ Contributed by Ulrich Drepper <drepper@redhat.com>, 2003.
+
+ The GNU C Library is free software; you can redistribute it and/or
+ modify it under the terms of the GNU Lesser General Public
+ License as published by the Free Software Foundation; either
+ version 2.1 of the License, or (at your option) any later version.
+
+ The GNU C Library is distributed in the hope that it will be useful,
+ but WITHOUT ANY WARRANTY; without even the implied warranty of
+ MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
+ Lesser General Public License for more details.
+
+ You should have received a copy of the GNU Lesser General Public
+ License along with the GNU C Library; if not, write to the Free
+ Software Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA
+ 02111-1307 USA. */
+
+#include <errno.h>
+#include <semaphore.h>
+#include <signal.h>
+#include <stdio.h>
+#include <unistd.h>
+
+
+static void
+handler (int sig)
+{
+ struct sigaction sa;
+
+ sa.sa_handler = SIG_DFL;
+ sa.sa_flags = 0;
+ sigemptyset (&sa.sa_mask);
+
+ sigaction (SIGALRM, &sa, NULL);
+
+ /* Rearm the timer. */
+ alarm (1);
+}
+
+
+static int
+do_test (void)
+{
+ sem_t s;
+ struct sigaction sa;
+
+ sa.sa_handler = handler;
+ sa.sa_flags = 0;
+ sigemptyset (&sa.sa_mask);
+
+ sigaction (SIGALRM, &sa, NULL);
+
+ if (sem_init (&s, 0, 0) == -1)
+ {
+ puts ("init failed");
+ return 1;
+ }
+
+ /* Set an alarm for 1 second. The wrapper will expect this. */
+ alarm (1);
+
+ int res = sem_wait (&s);
+ if (res == 0)
+ {
+ puts ("wait succeeded");
+ return 1;
+ }
+ if (res != -1 || errno != EINTR)
+ {
+ puts ("wait didn't fail with EINTR");
+ return 1;
+ }
+
+ return 0;
+}
+
+#define TIMEOUT 3
+#define TEST_FUNCTION do_test ()
+#include "../test-skeleton.c"