2003-05-09 Ulrich Drepper <drepper@redhat.com>
+ * 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.
+
* sysdeps/unix/sysv/linux/x86_64/get_clockfreq.c: New file.
2003-05-08 Ulrich Drepper <drepper@redhat.com>
/* Definitions of constants and data structure for POSIX 1003.1b-1993
scheduling interface.
- Copyright (C) 1996, 1997, 2001 Free Software Foundation, Inc.
+ Copyright (C) 1996, 1997, 2001, 2003 Free Software Foundation, Inc.
This file is part of the GNU C Library.
The GNU C Library is free software; you can redistribute it and/or
{
int __sched_priority;
};
+
+
+/* Size definition for CPU sets. */
+#define __CPU_SETSIZE 1024
+#define __NCPUBITS (8 * sizeof (__cpu_mask))
+
+/* Type for array elements in 'cpu_set'. */
+typedef unsigned long int __cpu_mask;
+
+/* Basic access functions. */
+#define __CPUELT(cpu) ((cpu) / __NCPUBITS)
+#define __CPUMASK(cpu) ((__cpu_mask) 1 << ((cpu) % __NCPUBITS))
+
+/* Data structure to describe CPU mask. */
+typedef struct
+{
+ __cpu_mask __bits[__CPU_SETSIZE / __NCPUBITS];
+} cpu_set_t;
+
+/* Access functions for CPU masks. */
+#define __CPU_ZERO(cpusetp) \
+ do { \
+ unsigned int __i; \
+ cpu_set *__arr = (cpusetp); \
+ for (__i = 0; __i < sizeof (cpu_set) / sizeof (__cpu_mask); ++__i) \
+ __arr->__bits[__i] = 0; \
+ } while (0)
+#define __CPU_SET(cpu, cpusetp) \
+ ((cpusetp)->__bits[__CPUELT (cpu)] |= __CPUMASK (cpu))
+#define __CPU_CLR(cpu, cpusetp) \
+ ((cpusetp)->__bits[__CPUELT (cpu)] &= ~__CPUMASK (cpu))
+#define __CPU_ISSET(cpu, cpusetp) \
+ (((cpusetp)->__bits[__CPUELT (cpu)] & __CPUMASK (cpu)) != 0)
}
mem = 64;
- if (atomic_exchange (&mem, 31) != 64
+ if (atomic_exchange_acq (&mem, 31) != 64
|| mem != 31)
{
- puts ("atomic_exchange test failed");
+ puts ("atomic_exchange_acq test failed");
ret = 1;
}
/* Store NEWVALUE in *MEM and return the old value. */
-#ifndef atomic_exchange
-# define atomic_exchange(mem, newvalue) \
+#ifndef atomic_exchange_acq
+# define atomic_exchange_acq(mem, newvalue) \
({ __typeof (*(mem)) __oldval; \
__typeof (mem) __memp = (mem); \
__typeof (*(mem)) __value = (newvalue); \
__oldval; })
#endif
+#ifndef atomic_exchange_rel
+# define atomic_exchange_rel(mem, newvalue) atomic_exchange_acq (mem, newvalue)
+#endif
+
/* Add VALUE to *MEM and return the old value of *MEM. */
#ifndef atomic_exchange_and_add
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
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
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 \
__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 {
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
#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)
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)
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)
__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);
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);
--- /dev/null
+/* 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;
+}
--- /dev/null
+/* 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);
+}
--- /dev/null
+/* 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"
#ifdef __USE_GNU
+/* Access macros for `cpu_set'. */
+#define CPU_SET(cpu, cpusetp) __CPU_SET (cpu, cpusetp)
+#define CPU_CLR(cpu, cpusetp) __CPU_CLR (cpu, cpusetp)
+#define CPU_ISSET(cpu, cpusetp) __CPU_ISSET (cpu, cpusetp)
+#define CPU_ZERO(cpusetp) __CPU_ZERO (cpusetp)
+
+
/* Set the CPU affinity for a task */
-extern int sched_setaffinity (__pid_t __pid, unsigned int __len,
- unsigned long int *__mask) __THROW;
+extern int sched_setaffinity (__pid_t __pid, __const cpu_set_t *__mask)
+ __THROW;
/* Get the CPU affinity for a task */
-extern int sched_getaffinity (__pid_t __pid, unsigned int __len,
- unsigned long int *__mask) __THROW;
+extern int sched_getaffinity (__pid_t __pid, cpu_set_t *__mask) __THROW;
#endif
__END_DECLS
/* Definitions of constants and data structure for POSIX 1003.1b-1993
scheduling interface.
- Copyright (C) 1996, 1997, 2001 Free Software Foundation, Inc.
+ Copyright (C) 1996, 1997, 2001, 2003 Free Software Foundation, Inc.
This file is part of the GNU C Library.
The GNU C Library is free software; you can redistribute it and/or
{
int __sched_priority;
};
+
+
+/* Size definition for CPU sets. */
+#define __CPU_SETSIZE 1024
+#define __NCPUBITS (8 * sizeof (__cpu_mask))
+
+/* Type for array elements in 'cpu_set'. */
+typedef unsigned long int __cpu_mask;
+
+/* Basic access functions. */
+#define __CPUELT(cpu) ((cpu) / __NCPUBITS)
+#define __CPUMASK(cpu) ((__cpu_mask) 1 << ((cpu) % __NCPUBITS))
+
+/* Data structure to describe CPU mask. */
+typedef struct
+{
+ __cpu_mask __bits[__CPU_SETSIZE / __NCPUBITS];
+} cpu_set_t;
+
+/* Access functions for CPU masks. */
+#define __CPU_ZERO(cpusetp) \
+ do { \
+ unsigned int __i; \
+ cpu_set *__arr = (cpusetp); \
+ for (__i = 0; __i < sizeof (cpu_set) / sizeof (__cpu_mask); ++__i) \
+ __arr->__bits[__i] = 0; \
+ } while (0)
+#define __CPU_SET(cpu, cpusetp) \
+ ((cpusetp)->__bits[__CPUELT (cpu)] |= __CPUMASK (cpu))
+#define __CPU_CLR(cpu, cpusetp) \
+ ((cpusetp)->__bits[__CPUELT (cpu)] &= ~__CPUMASK (cpu))
+#define __CPU_ISSET(cpu, cpusetp) \
+ (((cpusetp)->__bits[__CPUELT (cpu)] & __CPUMASK (cpu)) != 0)
02111-1307 USA. */
#include <errno.h>
-#include <sys/types.h>
#include <sched.h>
+#include <sys/types.h>
/* Retrieve the CPU affinity mask for a particular process. */
int
-sched_getaffinity (pid, len, mask)
+sched_getaffinity (pid, cpuset)
pid_t pid;
- unsigned int len;
- unsigned long int *mask;
+ cpu_set_t *cpuset;
{
__set_errno (ENOSYS);
return -1;
/* Retrieve the CPU affinity mask for a particular process. */
int
-sched_setaffinity (pid, len, mask)
+sched_setaffinity (pid, mask)
pid_t pid;
- unsigned int len;
- unsigned long int *mask;
+ const cpu_set_t *cpuset;
{
__set_errno (ENOSYS);
return -1;
/* Note that we need no lock prefix. */
-#define atomic_exchange(mem, newvalue) \
+#define atomic_exchange_acq(mem, newvalue) \
({ __typeof (*mem) result; \
if (sizeof (*mem) == 1) \
__asm __volatile ("xchgb %b0, %1" \
(long) (newval))
/* Atomically store newval and return the old value. */
-#define atomic_exchange(mem, value) \
- ({ __typeof (*mem) __result; \
- if (sizeof (*mem) == 4) \
- __result = __sync_lock_test_and_set_si ((int *) (mem), (int) (value)); \
- else if (sizeof (*mem) == 8) \
- __result = __sync_lock_test_and_set_di ((long *) (mem), \
- (long) (value)); \
- else \
- abort (); \
- __result; })
-
+#define atomic_exchange_acq(mem, value) \
+ __sync_lock_test_and_set (mem, value)
+
+#define atomic_exchange_rel(mem, value) \
+ (__sync_synchronize (), __sync_lock_test_and_set (mem, value))
+
#define atomic_exchange_and_add(mem, value) \
({ __typeof (*mem) __result; \
: "memory"); \
__ret; })
-#define atomic_exchange(mem, newvalue) \
+#define atomic_exchange_acq(mem, newvalue) \
({ __typeof (*(mem)) __result = *(mem); \
if (sizeof (*(mem)) == 1) \
__asm __volatile ("1: cas%.b %0,%2,%1;" \
02111-1307 USA. */
/*
- * Never include sysdeps/powerpc/bits/atomic.h directly.
- * Alway use include/atomic.h which will include either
- * sysdeps/powerpc/powerpc32/bits/atomic.h
- * or
- * sysdeps/powerpc/powerpc64/bits/atomic.h
+ * Never include sysdeps/powerpc/bits/atomic.h directly.
+ * Alway use include/atomic.h which will include either
+ * sysdeps/powerpc/powerpc32/bits/atomic.h
+ * or
+ * sysdeps/powerpc/powerpc64/bits/atomic.h
* as appropriate and which in turn include this file.
*/
typedef intmax_t atomic_max_t;
typedef uintmax_t uatomic_max_t;
-/*
- * Powerpc does not have byte and halfword forms of load and reserve and
+/*
+ * Powerpc does not have byte and halfword forms of load and reserve and
* store conditional. So for powerpc we stub out the 8- and 16-bit forms.
*/
#define __arch_compare_and_exchange_bool_8_acq(mem, newval, oldval) \
__result; \
})
-#define atomic_exchange(mem, value) \
+#define atomic_exchange_acq(mem, value) \
({ \
__typeof (*(mem)) __result; \
if (sizeof (*mem) == 4) \
abort (); \
__result; \
})
-
#define __arch_compare_and_exchange_val_64_acq(mem, newval, oldval) \
(abort (), (__typeof (*mem)) 0)
-#define atomic_exchange(mem, newvalue) \
+#define atomic_exchange_acq(mem, newvalue) \
({ __typeof (*(mem)) __oldval; \
__typeof (mem) __memp = (mem); \
__typeof (*(mem)) __value = (newvalue); \
"r" (__acev_mem), "0" ((long) (newval))); \
__acev_tmp; })
-#define atomic_exchange(mem, newvalue) \
+#define atomic_exchange_acq(mem, newvalue) \
({ __typeof (*(mem)) __oldval, __val; \
__typeof (mem) __memp = (mem); \
__typeof (*(mem)) __value = (newvalue); \
/* Definitions of constants and data structure for POSIX 1003.1b-1993
scheduling interface.
- Copyright (C) 1996,1997,1998,1999,2001,2002 Free Software Foundation, Inc.
+ Copyright (C) 1996-1999,2001,2002,2003 Free Software Foundation, Inc.
This file is part of the GNU C Library.
The GNU C Library is free software; you can redistribute it and/or
};
# undef __need_schedparam
#endif
+
+
+/* Size definition for CPU sets. */
+#define __CPU_SETSIZE 1024
+#define __NCPUBITS (8 * sizeof (__cpu_mask))
+
+/* Type for array elements in 'cpu_set'. */
+typedef unsigned long int __cpu_mask;
+
+/* Basic access functions. */
+#define __CPUELT(cpu) ((cpu) / __NCPUBITS)
+#define __CPUMASK(cpu) ((__cpu_mask) 1 << ((cpu) % __NCPUBITS))
+
+/* Data structure to describe CPU mask. */
+typedef struct
+{
+ __cpu_mask __bits[__CPU_SETSIZE / __NCPUBITS];
+} cpu_set_t;
+
+/* Access functions for CPU masks. */
+#define __CPU_ZERO(cpusetp) \
+ do { \
+ unsigned int __i; \
+ cpu_set *__arr = (cpusetp); \
+ for (__i = 0; __i < sizeof (cpu_set) / sizeof (__cpu_mask); ++__i) \
+ __arr->__bits[__i] = 0; \
+ } while (0)
+#define __CPU_SET(cpu, cpusetp) \
+ ((cpusetp)->__bits[__CPUELT (cpu)] |= __CPUMASK (cpu))
+#define __CPU_CLR(cpu, cpusetp) \
+ ((cpusetp)->__bits[__CPUELT (cpu)] &= ~__CPUMASK (cpu))
+#define __CPU_ISSET(cpu, cpusetp) \
+ (((cpusetp)->__bits[__CPUELT (cpu)] & __CPUMASK (cpu)) != 0)
--- /dev/null
+/* Copyright (C) 2002, 2003 Free Software Foundation, Inc.
+ This file is part of the GNU C Library.
+
+ 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 <sched.h>
+#include <string.h>
+#include <sysdep.h>
+#include <sys/types.h>
+
+
+#ifdef __NR_sched_getaffinity
+int
+sched_getaffinity (pid, cpuset)
+ pid_t pid;
+ cpu_set_t *cpuset;
+{
+ int res = INLINE_SYSCALL (sched_getaffinity, 3, pid, sizeof (cpu_set_t),
+ cpuset);
+ if (res != -1)
+ {
+ /* Clean the rest of the memory the kernel didn't do. */
+ memset ((char *) cpuset + res, '\0', sizeof (cpu_set_t) - res);
+
+ res = 0;
+ }
+ return res;
+}
+#else
+# include <sysdeps/generic/sched_getaffinity.c>
+#endif
--- /dev/null
+/* Copyright (C) 2002, 2003 Free Software Foundation, Inc.
+ This file is part of the GNU C Library.
+
+ 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 <sched.h>
+#include <string.h>
+#include <sysdep.h>
+#include <sys/types.h>
+
+
+#ifdef __NR_sched_setaffinity
+int
+sched_setaffinity (pid, cpuset)
+ pid_t pid;
+ const cpu_set_t *cpuset;
+{
+ return INLINE_SYSCALL (sched_setaffinity, 3, pid, sizeof (cpu_set_t),
+ cpuset);
+}
+#else
+# include <sysdeps/generic/sched_setaffinity.c>
+#endif
/* Note that we need no lock prefix. */
-#define atomic_exchange(mem, newvalue) \
+#define atomic_exchange_acq(mem, newvalue) \
({ __typeof (*mem) result; \
if (sizeof (*mem) == 1) \
__asm __volatile ("xchgb %b0, %1" \
git.samba.org / jlayton / glibc.git / commitdiff