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Hi!
This patch adds stubs for TPI/TPP support (but doesn't enable
the options in bits/posix_opt.h yet). What is missing is handling
these kind of mutexes in pthread_mutex_{lock,trylock,unlock,timedlock}.c
and adding some corresponding locking for pthread_mutex_setprioceiling.c.
2006-02-27 Jakub Jelinek <jakub@redhat.com>
* Makefile (libpthread-routines): Add
pthread_mutexattr_[sg]etprotocol, pthread_mutexattr_[sg]etprioceiling
and pthread_mutex_[sg]etprioceiling.
* Versions (GLIBC_2.4): Export pthread_mutexattr_getprotocol,
pthread_mutexattr_setprotocol, pthread_mutexattr_getprioceiling,
pthread_mutexattr_setprioceiling, pthread_mutex_getprioceiling and
pthread_mutex_setprioceiling.
* sysdeps/pthread/pthread.h (PTHREAD_PRIO_NONE, PTHREAD_PRIO_INHERIT,
PTHREAD_PRIO_PROTECT): New enum values.
(pthread_mutexattr_getprotocol, pthread_mutexattr_setprotocol,
pthread_mutexattr_getprioceiling, pthread_mutexattr_setprioceiling,
pthread_mutex_getprioceiling, pthread_mutex_setprioceiling): New
prototypes.
* pthreadP.h (PTHREAD_MUTEX_PRIO_INHERIT_PRIVATE_NP,
PTHREAD_MUTEX_PRIO_PROTECT_PRIVATE_NP): New enum values.
(PTHREAD_MUTEX_PRIO_CEILING_SHIFT, PTHREAD_MUTEX_PRIO_CEILING_MASK):
Define.
(PTHREAD_MUTEXATTR_PROTOCOL_SHIFT, PTHREAD_MUTEXATTR_PROTOCOL_MASK,
PTHREAD_MUTEXATTR_PRIO_CEILING_SHIFT,
PTHREAD_MUTEXATTR_PRIO_CEILING_MASK): Define.
(PTHREAD_MUTEXATTR_FLAG_BITS): Or in PTHREAD_MUTEXATTR_PROTOCOL_MASK
and PTHREAD_MUTEXATTR_PRIO_CEILING_MASK.
* pthread_mutex_init.c (__pthread_mutex_init): For the time being
return ENOTSUP for PTHREAD_PRIO_INHERIT or PTHREAD_PRIO_PROTECT
protocol mutexes.
* pthread_mutex_getprioceiling.c: New file.
* pthread_mutex_setprioceiling.c: New file.
* pthread_mutexattr_getprioceiling.c: New file.
* pthread_mutexattr_setprioceiling.c: New file.
* pthread_mutexattr_getprotocol.c: New file.
* pthread_mutexattr_setprotocol.c: New file.
--- libc/nptl/sysdeps/pthread/pthread.h.jj 2006-02-17 09:09:45.000000000 +0100
+++ libc/nptl/sysdeps/pthread/pthread.h 2006-02-27 18:43:06.000000000 +0100
@@ -71,6 +71,17 @@ enum
#endif
+#ifdef __USE_UNIX98
+/* Mutex protocols. */
+enum
+{
+ PTHREAD_PRIO_NONE,
+ PTHREAD_PRIO_INHERIT,
+ PTHREAD_PRIO_PROTECT
+};
+#endif
+
+
/* Mutex initializers. */
#if __WORDSIZE == 64
# define PTHREAD_MUTEX_INITIALIZER \
@@ -711,6 +722,22 @@ extern int pthread_mutex_timedlock (pthr
extern int pthread_mutex_unlock (pthread_mutex_t *__mutex) __THROW;
+#ifdef __USE_UNIX98
+/* Get the priority ceiling of MUTEX. */
+extern int pthread_mutex_getprioceiling (__const pthread_mutex_t *
+ __restrict __mutex,
+ int *__restrict __prioceiling)
+ __THROW;
+
+/* Set the priority ceiling of MUTEX to PRIOCEILING, return old
+ priority ceiling value in *OLD_CEILING. */
+extern int pthread_mutex_setprioceiling (pthread_mutex_t *__restrict __mutex,
+ int __prioceiling,
+ int *__restrict __old_ceiling)
+ __THROW;
+#endif
+
+
#ifdef __USE_GNU
/* Declare the state protected by MUTEX as consistent. */
extern int pthread_mutex_consistent_np (pthread_mutex_t *__mutex) __THROW;
@@ -745,6 +772,26 @@ extern int pthread_mutexattr_gettype (__
PTHREAD_MUTEX_DEFAULT). */
extern int pthread_mutexattr_settype (pthread_mutexattr_t *__attr, int __kind)
__THROW;
+
+/* Return in *PROTOCOL the mutex protocol attribute in *ATTR. */
+extern int pthread_mutexattr_getprotocol (__const pthread_mutexattr_t *
+ __restrict __attr,
+ int *__restrict __protocol) __THROW;
+
+/* Set the mutex protocol attribute in *ATTR to PROTOCOL (either
+ PTHREAD_PRIO_NONE, PTHREAD_PRIO_INHERIT, or PTHREAD_PRIO_PROTECT). */
+extern int pthread_mutexattr_setprotocol (pthread_mutexattr_t *__attr,
+ int __protocol) __THROW;
+
+/* Return in *PRIOCEILING the mutex prioceiling attribute in *ATTR. */
+extern int pthread_mutexattr_getprioceiling (__const pthread_mutexattr_t *
+ __restrict __attr,
+ int *__restrict __prioceiling)
+ __THROW;
+
+/* Set the mutex prioceiling attribute in *ATTR to PRIOCEILING. */
+extern int pthread_mutexattr_setprioceiling (pthread_mutexattr_t *__attr,
+ int __prioceiling) __THROW;
#endif
#ifdef __USE_GNU
--- libc/nptl/Makefile.jj 2006-02-17 09:09:45.000000000 +0100
+++ libc/nptl/Makefile 2006-02-27 18:43:06.000000000 +0100
@@ -118,7 +118,12 @@ libpthread-routines = init vars events v
pthread_attr_getaffinity pthread_attr_setaffinity \
pthread_mutexattr_getrobust pthread_mutexattr_setrobust \
pthread_mutex_consistent \
- cleanup_routine unwind-forcedunwind
+ cleanup_routine unwind-forcedunwind \
+ pthread_mutexattr_getprotocol \
+ pthread_mutexattr_setprotocol \
+ pthread_mutexattr_getprioceiling \
+ pthread_mutexattr_setprioceiling \
+ pthread_mutex_getprioceiling pthread_mutex_setprioceiling
# pthread_setuid pthread_seteuid pthread_setreuid \
# pthread_setresuid \
# pthread_setgid pthread_setegid pthread_setregid \
--- libc/nptl/pthread_mutexattr_getprioceiling.c.jj 2006-02-27 18:43:06.000000000 +0100
+++ libc/nptl/pthread_mutexattr_getprioceiling.c 2006-02-27 18:43:06.000000000 +0100
@@ -0,0 +1,36 @@
+/* Copyright (C) 2006 Free Software Foundation, Inc.
+ This file is part of the GNU C Library.
+ Contributed by Jakub Jelinek <jakub@redhat.com>, 2006.
+
+ 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 <pthreadP.h>
+
+
+int
+pthread_mutexattr_getprioceiling (attr, prioceiling)
+ const pthread_mutexattr_t *attr;
+ int *prioceiling;
+{
+ const struct pthread_mutexattr *iattr;
+
+ iattr = (const struct pthread_mutexattr *) attr;
+
+ *prioceiling = ((iattr->mutexkind & PTHREAD_MUTEXATTR_PRIO_CEILING_MASK)
+ >> PTHREAD_MUTEXATTR_PRIO_CEILING_SHIFT);
+
+ return 0;
+}
--- libc/nptl/pthread_mutexattr_getprotocol.c.jj 2006-02-27 18:43:06.000000000 +0100
+++ libc/nptl/pthread_mutexattr_getprotocol.c 2006-02-27 18:43:06.000000000 +0100
@@ -0,0 +1,36 @@
+/* Copyright (C) 2006 Free Software Foundation, Inc.
+ This file is part of the GNU C Library.
+ Contributed by Jakub Jelinek <jakub@redhat.com>, 2006.
+
+ 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 <pthreadP.h>
+
+
+int
+pthread_mutexattr_getprotocol (attr, protocol)
+ const pthread_mutexattr_t *attr;
+ int *protocol;
+{
+ const struct pthread_mutexattr *iattr;
+
+ iattr = (const struct pthread_mutexattr *) attr;
+
+ *protocol = ((iattr->mutexkind & PTHREAD_MUTEXATTR_PROTOCOL_MASK)
+ >> PTHREAD_MUTEXATTR_PROTOCOL_SHIFT);
+
+ return 0;
+}
--- libc/nptl/pthread_mutex_getprioceiling.c.jj 2006-02-27 18:43:06.000000000 +0100
+++ libc/nptl/pthread_mutex_getprioceiling.c 2006-02-27 18:43:06.000000000 +0100
@@ -0,0 +1,32 @@
+/* Copyright (C) 2006 Free Software Foundation, Inc.
+ This file is part of the GNU C Library.
+ Contributed by Jakub Jelinek <jakub@redhat.com>, 2006.
+
+ 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 <pthreadP.h>
+
+
+int
+pthread_mutex_getprioceiling (mutex, prioceiling)
+ const pthread_mutex_t *mutex;
+ int *prioceiling;
+{
+ *prioceiling = (mutex->__data.__kind & PTHREAD_MUTEX_PRIO_CEILING_MASK)
+ >> PTHREAD_MUTEX_PRIO_CEILING_SHIFT;
+
+ return 0;
+}
--- libc/nptl/pthread_mutex_init.c.jj 2005-12-30 09:04:04.000000000 +0100
+++ libc/nptl/pthread_mutex_init.c 2006-02-27 18:44:39.000000000 +0100
@@ -1,4 +1,4 @@
-/* Copyright (C) 2002, 2003, 2004, 2005 Free Software Foundation, Inc.
+/* Copyright (C) 2002, 2003, 2004, 2005, 2006 Free Software Foundation, Inc.
This file is part of the GNU C Library.
Contributed by Ulrich Drepper <drepper@redhat.com>, 2002.
@@ -46,6 +46,11 @@ __pthread_mutex_init (mutex, mutexattr)
if ((imutexattr->mutexkind & PTHREAD_MUTEXATTR_FLAG_ROBUST) != 0
&& (imutexattr->mutexkind & PTHREAD_MUTEXATTR_FLAG_PSHARED) != 0)
return ENOTSUP;
+ // XXX For now we don't support priority inherited or priority protected
+ // XXX mutexes.
+ if ((imutexattr->mutexkind & PTHREAD_MUTEXATTR_PROTOCOL_MASK)
+ != (PTHREAD_PRIO_NONE << PTHREAD_MUTEXATTR_PROTOCOL_SHIFT))
+ return ENOTSUP;
/* Clear the whole variable. */
memset (mutex, '\0', __SIZEOF_PTHREAD_MUTEX_T);
@@ -54,6 +59,27 @@ __pthread_mutex_init (mutex, mutexattr)
mutex->__data.__kind = imutexattr->mutexkind & ~PTHREAD_MUTEXATTR_FLAG_BITS;
if ((imutexattr->mutexkind & PTHREAD_MUTEXATTR_FLAG_ROBUST) != 0)
mutex->__data.__kind |= PTHREAD_MUTEX_ROBUST_PRIVATE_NP;
+ switch ((imutexattr->mutexkind & PTHREAD_MUTEXATTR_PROTOCOL_MASK)
+ >> PTHREAD_MUTEXATTR_PROTOCOL_SHIFT)
+ {
+ case PTHREAD_PRIO_INHERIT:
+ mutex->__data.__kind |= PTHREAD_MUTEX_PRIO_INHERIT_PRIVATE_NP;
+ break;
+ case PTHREAD_PRIO_PROTECT:
+ mutex->__data.__kind |= PTHREAD_MUTEX_PRIO_PROTECT_PRIVATE_NP;
+ if (PTHREAD_MUTEX_PRIO_CEILING_MASK
+ == PTHREAD_MUTEXATTR_PRIO_CEILING_MASK)
+ mutex->__data.__kind |= (imutexattr->mutexkind
+ & PTHREAD_MUTEXATTR_PRIO_CEILING_MASK);
+ else
+ mutex->__data.__kind |= ((imutexattr->mutexkind
+ & PTHREAD_MUTEXATTR_PRIO_CEILING_MASK)
+ >> PTHREAD_MUTEXATTR_PRIO_CEILING_SHIFT)
+ << PTHREAD_MUTEX_PRIO_CEILING_SHIFT;
+ break;
+ default:
+ break;
+ }
/* Default values: mutex not used yet. */
// mutex->__count = 0; already done by memset
--- libc/nptl/pthread_mutexattr_setprioceiling.c.jj 2006-02-27 18:43:06.000000000 +0100
+++ libc/nptl/pthread_mutexattr_setprioceiling.c 2006-02-27 18:43:06.000000000 +0100
@@ -0,0 +1,39 @@
+/* Copyright (C) 2006 Free Software Foundation, Inc.
+ This file is part of the GNU C Library.
+ Contributed by Jakub Jelinek <jakub@redhat.com>, 2006.
+
+ 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>
+
+
+int
+pthread_mutexattr_setprioceiling (attr, prioceiling)
+ pthread_mutexattr_t *attr;
+ int prioceiling;
+{
+ if (prioceiling < 0
+ && __builtin_expect (prioceiling > 255, 0))
+ return EINVAL;
+
+ struct pthread_mutexattr *iattr = (struct pthread_mutexattr *) attr;
+
+ iattr->mutexkind = (iattr->mutexkind & ~PTHREAD_MUTEXATTR_PRIO_CEILING_MASK)
+ | (prioceiling << PTHREAD_MUTEXATTR_PRIO_CEILING_SHIFT);
+
+ return 0;
+}
--- libc/nptl/pthreadP.h.jj 2006-02-17 09:09:45.000000000 +0100
+++ libc/nptl/pthreadP.h 2006-02-27 18:43:06.000000000 +0100
@@ -66,15 +66,24 @@ enum
PTHREAD_MUTEX_ROBUST_PRIVATE_ERRORCHECK_NP
= PTHREAD_MUTEX_ROBUST_PRIVATE_NP | PTHREAD_MUTEX_ERRORCHECK_NP,
PTHREAD_MUTEX_ROBUST_PRIVATE_ADAPTIVE_NP
- = PTHREAD_MUTEX_ROBUST_PRIVATE_NP | PTHREAD_MUTEX_ADAPTIVE_NP
+ = PTHREAD_MUTEX_ROBUST_PRIVATE_NP | PTHREAD_MUTEX_ADAPTIVE_NP,
+ PTHREAD_MUTEX_PRIO_INHERIT_PRIVATE_NP = 32,
+ PTHREAD_MUTEX_PRIO_PROTECT_PRIVATE_NP = 64
};
+#define PTHREAD_MUTEX_PRIO_CEILING_SHIFT 16
+#define PTHREAD_MUTEX_PRIO_CEILING_MASK 0x00ff0000
/* Flags in mutex attr. */
-#define PTHREAD_MUTEXATTR_FLAG_ROBUST 0x40000000
-#define PTHREAD_MUTEXATTR_FLAG_PSHARED 0x80000000
+#define PTHREAD_MUTEXATTR_PROTOCOL_SHIFT 28
+#define PTHREAD_MUTEXATTR_PROTOCOL_MASK 0x30000000
+#define PTHREAD_MUTEXATTR_PRIO_CEILING_SHIFT 16
+#define PTHREAD_MUTEXATTR_PRIO_CEILING_MASK 0x00ff0000
+#define PTHREAD_MUTEXATTR_FLAG_ROBUST 0x40000000
+#define PTHREAD_MUTEXATTR_FLAG_PSHARED 0x80000000
#define PTHREAD_MUTEXATTR_FLAG_BITS \
- (PTHREAD_MUTEXATTR_FLAG_ROBUST | PTHREAD_MUTEXATTR_FLAG_PSHARED)
+ (PTHREAD_MUTEXATTR_FLAG_ROBUST | PTHREAD_MUTEXATTR_FLAG_PSHARED \
+ | PTHREAD_MUTEXATTR_PROTOCOL_MASK | PTHREAD_MUTEXATTR_PRIO_CEILING_MASK)
/* Bits used in robust mutex implementation. */
--- libc/nptl/Versions.jj 2005-12-30 09:04:04.000000000 +0100
+++ libc/nptl/Versions 2006-02-27 18:43:06.000000000 +0100
@@ -235,6 +235,9 @@ libpthread {
GLIBC_2.4 {
pthread_mutexattr_getrobust_np; pthread_mutexattr_setrobust_np;
pthread_mutex_consistent_np;
+ pthread_mutexattr_getprotocol; pthread_mutexattr_setprotocol;
+ pthread_mutexattr_getprioceiling; pthread_mutexattr_setprioceiling;
+ pthread_mutex_getprioceiling; pthread_mutex_setprioceiling;
};
GLIBC_PRIVATE {
--- libc/nptl/pthread_mutex_setprioceiling.c.jj 2006-02-27 18:43:06.000000000 +0100
+++ libc/nptl/pthread_mutex_setprioceiling.c 2006-02-27 18:43:06.000000000 +0100
@@ -0,0 +1,55 @@
+/* Copyright (C) 2006 Free Software Foundation, Inc.
+ This file is part of the GNU C Library.
+ Contributed by Jakub Jelinek <jakub@redhat.com>, 2006.
+
+ 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>
+
+
+int
+pthread_mutex_setprioceiling (mutex, prioceiling, old_ceiling)
+ pthread_mutex_t *mutex;
+ int prioceiling;
+ int *old_ceiling;
+{
+ /* The low bits of __kind aren't ever changed after pthread_mutex_init,
+ so we don't need a lock yet. */
+ if ((mutex->__data.__kind & PTHREAD_MUTEX_PRIO_PROTECT_PRIVATE_NP) == 0)
+ return EINVAL;
+
+ if (prioceiling < 0
+ && __builtin_expect (prioceiling > 255, 0))
+ return EINVAL;
+
+ /* XXX This needs to lock with TID, but shouldn't obey priority protect
+ protocol. */
+ /* lll_xxx_mutex_lock (mutex->__data.__lock); */
+
+ if (old_ceiling != NULL)
+ *old_ceiling = (mutex->__data.__kind & PTHREAD_MUTEX_PRIO_CEILING_MASK)
+ >> PTHREAD_MUTEX_PRIO_CEILING_SHIFT;
+
+ int newkind = (mutex->__data.__kind & ~PTHREAD_MUTEX_PRIO_CEILING_MASK);
+ mutex->__data.__kind = newkind
+ | (prioceiling << PTHREAD_MUTEX_PRIO_CEILING_SHIFT);
+
+ /* XXX This needs to unlock the above special kind of lock. */
+ /* lll_xxx_mutex_unlock (mutex->__data.__lock); */
+
+ return 0;
+}
--- libc/nptl/pthread_mutexattr_setprotocol.c.jj 2006-02-27 18:43:06.000000000 +0100
+++ libc/nptl/pthread_mutexattr_setprotocol.c 2006-02-27 18:43:06.000000000 +0100
@@ -0,0 +1,40 @@
+/* Copyright (C) 2006 Free Software Foundation, Inc.
+ This file is part of the GNU C Library.
+ Contributed by Jakub Jelinek <jakub@redhat.com>, 2006.
+
+ 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>
+
+
+int
+pthread_mutexattr_setprotocol (attr, protocol)
+ pthread_mutexattr_t *attr;
+ int protocol;
+{
+ if (protocol != PTHREAD_PRIO_NONE
+ && protocol != PTHREAD_PRIO_INHERIT
+ && __builtin_expect (protocol != PTHREAD_PRIO_PROTECT, 0))
+ return EINVAL;
+
+ struct pthread_mutexattr *iattr = (struct pthread_mutexattr *) attr;
+
+ iattr->mutexkind = (iattr->mutexkind & ~PTHREAD_MUTEXATTR_PROTOCOL_MASK)
+ | (protocol << PTHREAD_MUTEXATTR_PROTOCOL_SHIFT);
+
+ return 0;
+}
Jakub
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