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2003-06-22  Ulrich Drepper  <drepper@redhat.com>

	* pthreadP.h (__pthread_mutex_init_internal): Mark hidden.
	(__pthread_mutex_lock_internal): Likewise.
	(__pthread_mutex_unlock_internal): Likewise.
	(__pthread_mutex_unlock_usercnt): Declare.
	* pthread_mutex_destroy.c: Always fail if used in any way.
	* pthread_mutex_init.c: Update comment.
	* pthread_mutex_lock.c: If NO_INCR is not defined adjust __nusers.
	* pthread_mutex_timedlock.c: Adjust __nusers.
	* pthread_mutex_trylock.c: Adjust __nusers.
	* pthread_mutex_unlock.c: Old code is in __pthread_mutex_unlock_usercnt
	and public interfaces are wrapper with pass additional parameter.
	__pthread_mutex_unlock_usercnt does not adjust __nusers if second
	parameter zero.
	* tst-mutex8.c: New file.
	* Makefile (tests): Add tst-mutex8.
	* sysdeps/pthread/pthread_cond_timedwait.c: Call
	__pthread_mutex_unlock_usercnt.
	* sysdeps/pthread/pthread_cond_wait.c: Likewise.
	* sysdeps/unix/sysv/linux/i386/i486/pthread_cond_timedwait.S: Likewise.
	* sysdeps/unix/sysv/linux/i386/i486/pthread_cond_wait.S: Likewise.
	* sysdeps/unix/sysv/linux/x86_64/pthread_cond_timedwait.S: Likewise.
	* sysdeps/unix/sysv/linux/x86_64/pthread_cond_wait.S: Likewise.
	* sysdeps/unix/sysv/linux/pthread_mutex_cond_lock.c: Define NO_INCR.
	* sysdeps/unix/sysv/linux/i386/bits/pthreadtypes.h (pthread_mutex_t):
	Add __nusers.
	* sysdeps/unix/sysv/linux/ia64/bits/pthreadtypes.h: Likewise.
	* sysdeps/unix/sysv/linux/powerpc/bits/pthreadtypes.h: Likewise.
	* sysdeps/unix/sysv/linux/s390/bits/pthreadtypes.h: Likewise.
	* sysdeps/unix/sysv/linux/sh/bits/pthreadtypes.h: Likewise.
	* sysdeps/unix/sysv/linux/x86_64/bits/pthreadtypes.h: Likewise.

	* pthread_mutex_lock.c: Don't store THREAD_ID in __owner, use TID.
	* pthread_mutex_timedlock.c: Likewise.
	* pthread_mutex_trylock.c: Adjust __nusers.
	* pthread_mutex_unlock.c: Compare with TID not THREAD_ID.
	* tst-mutex9.c: New file.
	* Makefile (tests): Add tst-mutex9.
	* sysdeps/i386/tls.h: Remove THREAD_ID definition.
	* sysdeps/ia64/tls.h: Likewise.
	* sysdeps/powerpc/tls.h: Likewise.
	* sysdeps/s390/tls.h: Likewise.
	* sysdeps/sh/tls.h: Likewise.
	* sysdeps/x86_64/tls.h: Likewise.
	* sysdeps/unix/sysv/linux/i386/bits/pthreadtypes.h (pthread_mutex_t):
	Change type of __owner.
	* sysdeps/unix/sysv/linux/ia64/bits/pthreadtypes.h: Likewise.
	* sysdeps/unix/sysv/linux/powerpc/bits/pthreadtypes.h: Likewise.
	* sysdeps/unix/sysv/linux/s390/bits/pthreadtypes.h: Likewise.
	* sysdeps/unix/sysv/linux/sh/bits/pthreadtypes.h: Likewise.
	* sysdeps/unix/sysv/linux/x86_64/bits/pthreadtypes.h: Likewise.
This commit is contained in:
Ulrich Drepper 2003-06-22 23:55:27 +00:00
parent b758b9cb10
commit 6162364368
29 changed files with 700 additions and 76 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

53
nptl/ChangeLog
View File

@ -1,3 +1,56 @@
2003-06-22 Ulrich Drepper <drepper@redhat.com>
* pthreadP.h (__pthread_mutex_init_internal): Mark hidden.
(__pthread_mutex_lock_internal): Likewise.
(__pthread_mutex_unlock_internal): Likewise.
(__pthread_mutex_unlock_usercnt): Declare.
* pthread_mutex_destroy.c: Always fail if used in any way.
* pthread_mutex_init.c: Update comment.
* pthread_mutex_lock.c: If NO_INCR is not defined adjust __nusers.
* pthread_mutex_timedlock.c: Adjust __nusers.
* pthread_mutex_trylock.c: Adjust __nusers.
* pthread_mutex_unlock.c: Old code is in __pthread_mutex_unlock_usercnt
and public interfaces are wrapper with pass additional parameter.
__pthread_mutex_unlock_usercnt does not adjust __nusers if second
parameter zero.
* tst-mutex8.c: New file.
* Makefile (tests): Add tst-mutex8.
* sysdeps/pthread/pthread_cond_timedwait.c: Call
__pthread_mutex_unlock_usercnt.
* sysdeps/pthread/pthread_cond_wait.c: Likewise.
* sysdeps/unix/sysv/linux/i386/i486/pthread_cond_timedwait.S: Likewise.
* sysdeps/unix/sysv/linux/i386/i486/pthread_cond_wait.S: Likewise.
* sysdeps/unix/sysv/linux/x86_64/pthread_cond_timedwait.S: Likewise.
* sysdeps/unix/sysv/linux/x86_64/pthread_cond_wait.S: Likewise.
* sysdeps/unix/sysv/linux/pthread_mutex_cond_lock.c: Define NO_INCR.
* sysdeps/unix/sysv/linux/i386/bits/pthreadtypes.h (pthread_mutex_t):
Add __nusers.
* sysdeps/unix/sysv/linux/ia64/bits/pthreadtypes.h: Likewise.
* sysdeps/unix/sysv/linux/powerpc/bits/pthreadtypes.h: Likewise.
* sysdeps/unix/sysv/linux/s390/bits/pthreadtypes.h: Likewise.
* sysdeps/unix/sysv/linux/sh/bits/pthreadtypes.h: Likewise.
* sysdeps/unix/sysv/linux/x86_64/bits/pthreadtypes.h: Likewise.
* pthread_mutex_lock.c: Don't store THREAD_ID in __owner, use TID.
* pthread_mutex_timedlock.c: Likewise.
* pthread_mutex_trylock.c: Adjust __nusers.
* pthread_mutex_unlock.c: Compare with TID not THREAD_ID.
* tst-mutex9.c: New file.
* Makefile (tests): Add tst-mutex9.
* sysdeps/i386/tls.h: Remove THREAD_ID definition.
* sysdeps/ia64/tls.h: Likewise.
* sysdeps/powerpc/tls.h: Likewise.
* sysdeps/s390/tls.h: Likewise.
* sysdeps/sh/tls.h: Likewise.
* sysdeps/x86_64/tls.h: Likewise.
* sysdeps/unix/sysv/linux/i386/bits/pthreadtypes.h (pthread_mutex_t):
Change type of __owner.
* sysdeps/unix/sysv/linux/ia64/bits/pthreadtypes.h: Likewise.
* sysdeps/unix/sysv/linux/powerpc/bits/pthreadtypes.h: Likewise.
* sysdeps/unix/sysv/linux/s390/bits/pthreadtypes.h: Likewise.
* sysdeps/unix/sysv/linux/sh/bits/pthreadtypes.h: Likewise.
* sysdeps/unix/sysv/linux/x86_64/bits/pthreadtypes.h: Likewise.
2003-06-19 Jakub Jelinek <jakub@redhat.com>
* sysdeps/unix/sysv/linux/ia64/sem_post.c: Move to...

2
nptl/Makefile
View File

@ -187,7 +187,7 @@ omit-deps = $(unix-syscalls:%=ptw-%)
tests = tst-attr1 tst-attr2 \
tst-mutex1 tst-mutex2 tst-mutex3 tst-mutex4 tst-mutex5 tst-mutex6 \
tst-mutex7 \
tst-mutex7 tst-mutex8 tst-mutex9 \
tst-spin1 tst-spin2 tst-spin3 \
tst-cond1 tst-cond2 tst-cond3 tst-cond4 tst-cond5 tst-cond6 tst-cond7 \
tst-cond8 tst-cond9 tst-cond10 tst-cond11 \

4
nptl/pthread_mutex_destroy.c
View File

@ -25,9 +25,7 @@ int
__pthread_mutex_destroy (mutex)
pthread_mutex_t *mutex;
{
if (__builtin_expect (mutex->__data.__kind == PTHREAD_MUTEX_ERRORCHECK_NP,
0)
&& lll_mutex_trylock (mutex->__data.__lock) != 0)
if (mutex->__data.__nusers != 0)
return EBUSY;
return 0;

5
nptl/pthread_mutex_init.c
View File

@ -1,4 +1,4 @@
/* Copyright (C) 2002 Free Software Foundation, Inc.
/* Copyright (C) 2002, 2003 Free Software Foundation, Inc.
This file is part of the GNU C Library.
Contributed by Ulrich Drepper <drepper@redhat.com>, 2002.
@ -48,7 +48,8 @@ __pthread_mutex_init (mutex, mutexattr)
/* Default values: mutex not used yet. */
// mutex->__count = 0; already done by memset
// mutex->__owner = NULL; already done by memset
// mutex->__owner = 0; already done by memset
// mutex->__nusers = 0; already done by memset
return 0;
}

8
nptl/pthread_mutex_lock.c
View File

@ -31,7 +31,7 @@ int
__pthread_mutex_lock (mutex)
pthread_mutex_t *mutex;
{
struct pthread *id = THREAD_ID;
pid_t id = THREAD_GETMEM (THREAD_SELF, tid);
switch (__builtin_expect (mutex->__data.__kind, PTHREAD_MUTEX_TIMED_NP))
{
@ -55,6 +55,9 @@ __pthread_mutex_lock (mutex)
/* Record the ownership. */
mutex->__data.__owner = id;
mutex->__data.__count = 1;
#ifndef NO_INCR
++mutex->__data.__nusers;
#endif
}
break;
@ -74,6 +77,9 @@ __pthread_mutex_lock (mutex)
LLL_MUTEX_LOCK (mutex->__data.__lock);
/* Record the ownership. */
mutex->__data.__owner = id;
#ifndef NO_INCR
++mutex->__data.__nusers;
#endif
break;
}

5
nptl/pthread_mutex_timedlock.c
View File

@ -27,7 +27,7 @@ pthread_mutex_timedlock (mutex, abstime)
pthread_mutex_t *mutex;
const struct timespec *abstime;
{
struct pthread *id = THREAD_ID;
pid_t id = THREAD_GETMEM (THREAD_SELF, tid);
int result = 0;
/* We must not check ABSTIME here. If the thread does not block
@ -80,8 +80,11 @@ pthread_mutex_timedlock (mutex, abstime)
}
if (result == 0)
{
/* Record the ownership. */
mutex->__data.__owner = id;
++mutex->__data.__nusers;
}
out:
return result;

7
nptl/pthread_mutex_trylock.c
View File

@ -26,12 +26,13 @@ int
__pthread_mutex_trylock (mutex)
pthread_mutex_t *mutex;
{
struct pthread *id = THREAD_ID;
pid_t *id;
switch (__builtin_expect (mutex->__data.__kind, PTHREAD_MUTEX_TIMED_NP))
{
/* Recursive mutex. */
case PTHREAD_MUTEX_RECURSIVE_NP:
id = THREAD_GETMEM (THREAD_SELF, tid);
/* Check whether we already hold the mutex. */
if (mutex->__data.__owner == id)
{
@ -49,6 +50,7 @@ __pthread_mutex_trylock (mutex)
/* Record the ownership. */
mutex->__data.__owner = id;
mutex->__data.__count = 1;
++mutex->__data.__nusers;
return 0;
}
break;
@ -63,7 +65,8 @@ __pthread_mutex_trylock (mutex)
if (lll_mutex_trylock (mutex->__data.__lock) == 0)
{
/* Record the ownership. */
mutex->__data.__owner = id;
mutex->__data.__owner = THREAD_GETMEM (THREAD_SELF, tid);
++mutex->__data.__nusers;
return 0;
}

21
nptl/pthread_mutex_unlock.c
View File

@ -23,14 +23,16 @@
int
__pthread_mutex_unlock (mutex)
internal_function
__pthread_mutex_unlock_usercnt (mutex, decr)
pthread_mutex_t *mutex;
bool decr;
{
switch (__builtin_expect (mutex->__data.__kind, PTHREAD_MUTEX_TIMED_NP))
{
case PTHREAD_MUTEX_RECURSIVE_NP:
/* Recursive mutex. */
if (mutex->__data.__owner != THREAD_ID)
if (mutex->__data.__owner != THREAD_GETMEM (THREAD_SELF, tid))
return EPERM;
if (--mutex->__data.__count != 0)
@ -40,7 +42,7 @@ __pthread_mutex_unlock (mutex)
case PTHREAD_MUTEX_ERRORCHECK_NP:
/* Error checking mutex. */
if (mutex->__data.__owner != THREAD_ID
if (mutex->__data.__owner != THREAD_GETMEM (THREAD_SELF, tid)
|| ! lll_mutex_islocked (mutex->__data.__lock))
return EPERM;
break;
@ -54,12 +56,23 @@ __pthread_mutex_unlock (mutex)
}
/* Always reset the owner field. */
mutex->__data.__owner = NULL;
mutex->__data.__owner = 0;
if (decr)
/* One less user. */
--mutex->__data.__nusers;
/* Unlock. */
lll_mutex_unlock (mutex->__data.__lock);
return 0;
}
int
__pthread_mutex_unlock (mutex)
pthread_mutex_t *mutex;
{
return __pthread_mutex_unlock_usercnt (mutex, true);
}
strong_alias (__pthread_mutex_unlock, pthread_mutex_unlock)
strong_alias (__pthread_mutex_unlock, __pthread_mutex_unlock_internal)

4
nptl/sysdeps/i386/tls.h
View File

@ -251,10 +251,6 @@ union user_desc_init
: "i" (offsetof (struct pthread, header.self))); \
__self;})
/* Identifier for the current thread. THREAD_SELF is usable but
sometimes more expensive than necessary. It is fine here. */
# define THREAD_ID THREAD_SELF
/* Read member of the thread descriptor directly. */
# define THREAD_GETMEM(descr, member) \

4
nptl/sysdeps/ia64/tls.h
View File

@ -113,10 +113,6 @@ register struct pthread *__thread_self __asm__("r13");
/* Return the thread descriptor for the current thread. */
# define THREAD_SELF (__thread_self - 1)
/* Identifier for the current thread. THREAD_SELF is usable but
sometimes more expensive than necessary as in this case. */
# define THREAD_ID __thread_self
/* Access to data in the thread descriptor is easy. */
#define THREAD_GETMEM(descr, member) \
descr->member

4
nptl/sysdeps/powerpc/tls.h
View File

@ -129,10 +129,6 @@ register void *__thread_register __asm__ ("r13");
((struct pthread *) (__thread_register \
- TLS_TCB_OFFSET - TLS_PRE_TCB_SIZE))
/* Identifier for the current thread. THREAD_SELF is usable but
sometimes more expensive than necessary as in this case. */
# define THREAD_ID __thread_register
/* Read member of the thread descriptor directly. */
# define THREAD_GETMEM(descr, member) ((void)(descr), (THREAD_SELF)->member)

2
nptl/sysdeps/pthread/pthread_cond_timedwait.c
View File

@ -56,7 +56,7 @@ __pthread_cond_timedwait (cond, mutex, abstime)
lll_mutex_lock (cond->__data.__lock);
/* Now we can release the mutex. */
int err = __pthread_mutex_unlock_internal (mutex);
int err = __pthread_mutex_unlock_usercnt (mutex, 0);
if (err)
{
lll_mutex_unlock (cond->__data.__lock);

2
nptl/sysdeps/pthread/pthread_cond_wait.c
View File

@ -82,7 +82,7 @@ __pthread_cond_wait (cond, mutex)
lll_mutex_lock (cond->__data.__lock);
/* Now we can release the mutex. */
err = __pthread_mutex_unlock_internal (mutex);
err = __pthread_mutex_unlock_usercnt (mutex, 0);
if (err)
{
lll_mutex_unlock (cond->__data.__lock);

4
nptl/sysdeps/s390/tls.h
View File

@ -137,10 +137,6 @@ typedef struct
/* Return the thread descriptor for the current thread. */
# define THREAD_SELF ((struct pthread *) __builtin_thread_pointer ())
/* Identifier for the current thread. THREAD_SELF is usable but
sometimes more expensive than necessary. It is fine here. */
# define THREAD_ID THREAD_SELF
/* Access to data in the thread descriptor is easy. */
#define THREAD_GETMEM(descr, member) \
descr->member

7
nptl/sysdeps/sh/tls.h
View File

@ -117,13 +117,6 @@ typedef struct
__asm ("stc gbr,%0" : "=r" (__self)); \
__self - 1;})
/* Identifier for the current thread. THREAD_SELF is usable but
sometimes more expensive than necessary as in this case. */
# define THREAD_ID \
({ struct pthread *__self; \
__asm ("stc gbr,%0" : "=r" (__self)); \
__self;})
/* Read member of the thread descriptor directly. */
# define THREAD_GETMEM(descr, member) (descr->member)

3
nptl/sysdeps/unix/sysv/linux/i386/bits/pthreadtypes.h
View File

@ -51,10 +51,11 @@ typedef union
{
int __lock;
unsigned int __count;
struct pthread *__owner;
int __owner;
/* KIND must stay at this position in the structure to maintain
binary compatibility. */
int __kind;
unsigned int __nusers;
} __data;
char __size[__SIZEOF_PTHREAD_MUTEX_T];
long int __align;

19
nptl/sysdeps/unix/sysv/linux/i386/i486/pthread_cond_timedwait.S
View File

@ -72,9 +72,8 @@ __pthread_cond_timedwait:
movl %eax, dep_mutex(%ebx)
/* Unlock the mutex. */
pushl %eax
.Lpush4:
call __pthread_mutex_unlock_internal
xorl %edx, %edx
call __pthread_mutex_unlock_usercnt
testl %eax, %eax
jne 16f
@ -90,7 +89,7 @@ __pthread_cond_timedwait:
#else
leal __condvar_cleanup, %eax
#endif
subl $40, %esp
subl $44, %esp
.Lsubl:
leal 28(%esp), %edx
movl %esp, 8(%esp)
@ -299,15 +298,15 @@ __pthread_cond_timedwait:
/* The initial unlocking of the mutex failed. */
16:
.LSbl3:
movl %eax, (%esp)
LOCK
#if cond_lock == 0
subl $1, (%ebx)
#else
subl $1, cond_lock(%ebx)
#endif
jne 17f
jne 18b
movl %eax, %esi
#if cond_lock == 0
movl %ebx, %eax
#else
@ -315,7 +314,7 @@ __pthread_cond_timedwait:
#endif
call __lll_mutex_unlock_wake
17: popl %eax
movl %esi, %eax
jmp 18b
#if defined __NR_clock_gettime && !defined __ASSUME_POSIX_TIMERS
@ -411,10 +410,8 @@ versioned_symbol (libpthread, __pthread_cond_timedwait, pthread_cond_timedwait,
.uleb128 20
.byte 0x83 # DW_CFA_offset %ebx
.uleb128 5
.byte 0x40+.Lpush4-.Lpush_ebx # DW_CFA_advance_loc+N
.byte 14 # DW_CFA_def_cfa_offset
.uleb128 24
.byte 0x40+.Lsubl-.Lpush4 # DW_CFA_advance_loc+N
.byte 2 # DW_CFA_advance_loc1
.byte .Lsubl-.Lpush_ebx
.byte 14 # DW_CFA_def_cfa_offset
.uleb128 64
.byte 3 # DW_CFA_advance_loc2

19
nptl/sysdeps/unix/sysv/linux/i386/i486/pthread_cond_wait.S
View File

@ -127,9 +127,8 @@ __pthread_cond_wait:
movl %eax, dep_mutex(%ebx)
/* Unlock the mutex. */
pushl %eax
.Lpush4:
call __pthread_mutex_unlock_internal
xorl %edx, %edx
call __pthread_mutex_unlock_usercnt
testl %eax, %eax
jne 12f
@ -145,7 +144,7 @@ __pthread_cond_wait:
#else
leal __condvar_cleanup, %eax
#endif
subl $32, %esp
subl $36, %esp
.Lsubl:
leal 20(%esp), %edx
movl %esp, 8(%esp)
@ -289,15 +288,15 @@ __pthread_cond_wait:
/* The initial unlocking of the mutex failed. */
12:
.LSbl3:
movl %eax, (%esp)
LOCK
#if cond_lock == 0
subl $1, (%ebx)
#else
subl $1, cond_lock(%ebx)
#endif
jne 13f
jne 14b
movl %eax, %esi
#if cond_lock == 0
movl %ebx, %eax
#else
@ -305,7 +304,7 @@ __pthread_cond_wait:
#endif
call __lll_mutex_unlock_wake
13: popl %eax
movl %esi, %eax
jmp 14b
.LENDCODE:
.size __pthread_cond_wait, .-__pthread_cond_wait
@ -371,10 +370,8 @@ versioned_symbol (libpthread, __pthread_cond_wait, pthread_cond_wait,
.uleb128 16
.byte 0x83 # DW_CFA_offset %ebx
.uleb128 4
.byte 0x40+.Lpush4-.Lpush_ebx # DW_CFA_advance_loc+N
.byte 14 # DW_CFA_def_cfa_offset
.uleb128 20
.byte 0x40+.Lsubl-.Lpush4 # DW_CFA_advance_loc+N
.byte 2 # DW_CFA_advance_loc1
.byte .Lsubl-.Lpush_ebx
.byte 14 # DW_CFA_def_cfa_offset
.uleb128 52
.byte 2 # DW_CFA_advance_loc1

3
nptl/sysdeps/unix/sysv/linux/ia64/bits/pthreadtypes.h
View File

@ -51,7 +51,8 @@ typedef union
{
int __lock;
unsigned int __count;
struct pthread *__owner;
int __owner;
unsigned int __nusers;
/* KIND must stay at this position in the structure to maintain
binary compatibility. */
int __kind;

8
nptl/sysdeps/unix/sysv/linux/powerpc/bits/pthreadtypes.h
View File

@ -66,10 +66,16 @@ typedef union
{
int __lock;
unsigned int __count;
struct pthread *__owner;
int __owner;
#if __WORDSIZE == 64
unsigned int __nusers;
#endif
/* KIND must stay at this position in the structure to maintain
binary compatibility. */
int __kind;
#if __WORDSIZE != 64
unsigned int __nusers;
#endif
} __data;
char __size[__SIZEOF_PTHREAD_MUTEX_T];
long int __align;

1
nptl/sysdeps/unix/sysv/linux/pthread_mutex_cond_lock.c
View File

@ -2,5 +2,6 @@
#define LLL_MUTEX_LOCK(mutex) lll_mutex_cond_lock(mutex)
#define __pthread_mutex_lock __pthread_mutex_cond_lock
#define NO_INCR
#include <nptl/pthread_mutex_lock.c>

8
nptl/sysdeps/unix/sysv/linux/s390/bits/pthreadtypes.h
View File

@ -65,10 +65,16 @@ typedef union
{
int __lock;
unsigned int __count;
struct pthread *__owner;
int __owner;
#if __WORDSIZE == 64
unsigned int __nusers;
#endif
/* KIND must stay at this position in the structure to maintain
binary compatibility. */
int __kind;
#if __WORDSIZE != 64
unsigned int __nusers;
#endif
} __data;
char __size[__SIZEOF_PTHREAD_MUTEX_T];
long int __align;

3
nptl/sysdeps/unix/sysv/linux/sh/bits/pthreadtypes.h
View File

@ -52,10 +52,11 @@ typedef union
{
int __lock;
unsigned int __count;
struct pthread *__owner;
int __owner;
/* KIND must stay at this position in the structure to maintain
binary compatibility. */
int __kind;
unsigned int __nusers;
} __data;
char __size[__SIZEOF_PTHREAD_MUTEX_T];
long int __align;

3
nptl/sysdeps/unix/sysv/linux/x86_64/bits/pthreadtypes.h
View File

@ -51,7 +51,8 @@ typedef union
{
int __lock;
unsigned int __count;
struct pthread *__owner;
int __owner;
unsigned int __nusers;
/* KIND must stay at this position in the structure to maintain
binary compatibility. */
int __kind;

3
nptl/sysdeps/unix/sysv/linux/x86_64/pthread_cond_timedwait.S
View File

@ -91,7 +91,8 @@ __pthread_cond_timedwait:
/* Unlock the mutex. */
2: movq 16(%rsp), %rdi
callq __pthread_mutex_unlock_internal
xorq %rsi, %rsi
callq __pthread_mutex_unlock_usercnt
testl %eax, %eax
jne 16f

3
nptl/sysdeps/unix/sysv/linux/x86_64/pthread_cond_wait.S
View File

@ -136,7 +136,8 @@ __pthread_cond_wait:
/* Unlock the mutex. */
2: movq 16(%rsp), %rdi
callq __pthread_mutex_unlock_internal
xorq %rsi, %rsi
callq __pthread_mutex_unlock_usercnt
testl %eax, %eax
jne 12f

4
nptl/sysdeps/x86_64/tls.h
View File

@ -161,10 +161,6 @@ typedef struct
: "i" (offsetof (struct pthread, header.self))); \
__self;})
/* Identifier for the current thread. THREAD_SELF is usable but
sometimes more expensive than necessary. It is fine here. */
# define THREAD_ID THREAD_SELF
/* Read member of the thread descriptor directly. */
# define THREAD_GETMEM(descr, member) \

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/* 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. */
/* This test checks behavior not required by POSIX. */
#include <errno.h>
#include <pthread.h>
#include <stdbool.h>
#include <stdio.h>
#include <stdlib.h>
static pthread_mutex_t *m;
static pthread_barrier_t b;
static pthread_cond_t c;
static bool done;
static void
cl (void *arg)
{
if (pthread_mutex_unlock (m) != 0)
{
puts ("cl: mutex_unlocked failed");
exit (1);
}
}
static void *
tf (void *arg)
{
if (pthread_mutex_lock (m) != 0)
{
puts ("tf: mutex_lock failed");
return (void *) 1l;
}
int e = pthread_barrier_wait (&b);
if (e != 0 && e != PTHREAD_BARRIER_SERIAL_THREAD)
{
puts ("barrier_wait failed");
return (void *) 1l;
}
if (arg == NULL)
do
if (pthread_cond_wait (&c, m) != 0)
{
puts ("tf: cond_wait failed");
return (void *) 1l;
}
while (! done);
else
do
{
pthread_cleanup_push (cl, NULL);
if (pthread_cond_wait (&c, m) != 0)
{
puts ("tf: cond_wait failed");
return (void *) 1l;
}
pthread_cleanup_pop (0);
}
while (! done);
if (pthread_mutex_unlock (m) != 0)
{
puts ("tf: mutex_unlock failed");
return (void *) 1l;
}
return NULL;
}
static int
check_type (const char *mas, pthread_mutexattr_t *ma)
{
if (pthread_mutex_init (m, ma) != 0)
{
printf ("1st mutex_init failed for %s\n", mas);
return 1;
}
if (pthread_mutex_destroy (m) != 0)
{
printf ("immediate mutex_destroy failed for %s\n", mas);
return 1;
}
if (pthread_mutex_init (m, ma) != 0)
{
printf ("2nd mutex_init failed for %s\n", mas);
return 1;
}
if (pthread_mutex_lock (m) != 0)
{
printf ("1st mutex_lock failed for %s\n", mas);
return 1;
}
int e = pthread_mutex_destroy (m);
if (e == 0)
{
printf ("mutex_destroy of self-locked mutex succeeded for %s\n", mas);
return 1;
}
if (e != EBUSY)
{
printf ("mutex_destroy of self-locked mutex did not return EBUSY %s\n",
mas);
return 1;
}
if (pthread_mutex_unlock (m) != 0)
{
printf ("1st mutex_unlock failed for %s\n", mas);
return 1;
}
if (pthread_mutex_trylock (m) != 0)
{
printf ("mutex_trylock failed for %s\n", mas);
return 1;
}
e = pthread_mutex_destroy (m);
if (e == 0)
{
printf ("mutex_destroy of self-trylocked mutex succeeded for %s\n", mas);
return 1;
}
if (e != EBUSY)
{
printf ("\
mutex_destroy of self-trylocked mutex did not return EBUSY %s\n",
mas);
return 1;
}
if (pthread_mutex_unlock (m) != 0)
{
printf ("2nd mutex_unlock failed for %s\n", mas);
return 1;
}
pthread_t th;
if (pthread_create (&th, NULL, tf, NULL) != 0)
{
puts ("1st create failed");
return 1;
}
done = false;
e = pthread_barrier_wait (&b);
if (e != 0 && e != PTHREAD_BARRIER_SERIAL_THREAD)
{
puts ("1st barrier_wait failed");
return 1;
}
if (pthread_mutex_lock (m) != 0)
{
printf ("2nd mutex_lock failed for %s\n", mas);
return 1;
}
if (pthread_mutex_unlock (m) != 0)
{
printf ("3rd mutex_unlock failed for %s\n", mas);
return 1;
}
e = pthread_mutex_destroy (m);
if (e == 0)
{
printf ("mutex_destroy of condvar-used mutex succeeded for %s\n", mas);
return 1;
}
if (e != EBUSY)
{
printf ("\
mutex_destroy of condvar-used mutex did not return EBUSY for %s\n", mas);
return 1;
}
done = true;
if (pthread_cond_signal (&c) != 0)
{
puts ("cond_signal failed");
return 1;
}
void *r;
if (pthread_join (th, &r) != 0)
{
puts ("join failed");
return 1;
}
if (r != NULL)
{
puts ("thread didn't return NULL");
return 1;
}
if (pthread_mutex_destroy (m) != 0)
{
printf ("mutex_destroy after condvar-use failed for %s\n", mas);
return 1;
}
if (pthread_mutex_init (m, ma) != 0)
{
printf ("3rd mutex_init failed for %s\n", mas);
return 1;
}
if (pthread_create (&th, NULL, tf, (void *) 1) != 0)
{
puts ("2nd create failed");
return 1;
}
done = false;
e = pthread_barrier_wait (&b);
if (e != 0 && e != PTHREAD_BARRIER_SERIAL_THREAD)
{
puts ("2nd barrier_wait failed");
return 1;
}
if (pthread_mutex_lock (m) != 0)
{
printf ("3rd mutex_lock failed for %s\n", mas);
return 1;
}
if (pthread_mutex_unlock (m) != 0)
{
printf ("4th mutex_unlock failed for %s\n", mas);
return 1;
}
e = pthread_mutex_destroy (m);
if (e == 0)
{
printf ("2nd mutex_destroy of condvar-used mutex succeeded for %s\n",
mas);
return 1;
}
if (e != EBUSY)
{
printf ("\
2nd mutex_destroy of condvar-used mutex did not return EBUSY for %s\n",
mas);
return 1;
}
if (pthread_cancel (th) != 0)
{
puts ("cond_cancel failed");
return 1;
}
if (pthread_join (th, &r) != 0)
{
puts ("join failed");
return 1;
}
if (r != PTHREAD_CANCELED)
{
puts ("thread not canceled");
return 1;
}
if (pthread_mutex_destroy (m) != 0)
{
printf ("mutex_destroy after condvar-canceled failed for %s\n", mas);
return 1;
}
return 0;
}
static int
do_test (void)
{
pthread_mutex_t mm;
m = &mm;
if (pthread_barrier_init (&b, NULL, 2) != 0)
{
puts ("barrier_init failed");
return 1;
}
if (pthread_cond_init (&c, NULL) != 0)
{
puts ("cond_init failed");
return 1;
}
puts ("check normal mutex");
int res = check_type ("normal", NULL);
pthread_mutexattr_t ma;
if (pthread_mutexattr_init (&ma) != 0)
{
puts ("1st mutexattr_init failed");
return 1;
}
if (pthread_mutexattr_settype (&ma, PTHREAD_MUTEX_RECURSIVE) != 0)
{
puts ("1st mutexattr_settype failed");
return 1;
}
puts ("check recursive mutex");
res |= check_type ("recursive", &ma);
if (pthread_mutexattr_destroy (&ma) != 0)
{
puts ("1st mutexattr_destroy failed");
return 1;
}
if (pthread_mutexattr_init (&ma) != 0)
{
puts ("2nd mutexattr_init failed");
return 1;
}
if (pthread_mutexattr_settype (&ma, PTHREAD_MUTEX_ERRORCHECK) != 0)
{
puts ("2nd mutexattr_settype failed");
return 1;
}
puts ("check error-checking mutex");
res |= check_type ("error-checking", &ma);
if (pthread_mutexattr_destroy (&ma) != 0)
{
puts ("2nd mutexattr_destroy failed");
return 1;
}
return res;
}
#define TEST_FUNCTION do_test ()
#include "../test-skeleton.c"

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/* 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 <pthread.h>
#include <stdio.h>
#include <string.h>
#include <unistd.h>
#include <sys/mman.h>
#include <sys/wait.h>
static int
do_test (void)
{
#if ! _POSIX_THREAD_PROCESS_SHARED
puts ("_POSIX_THREAD_PROCESS_SHARED not supported, test skipped");
return 0;
#else
size_t ps = sysconf (_SC_PAGESIZE);
char tmpfname[] = "/tmp/tst-mutex9.XXXXXX";
char data[ps];
void *mem;
int fd;
pthread_mutex_t *m;
pthread_mutexattr_t a;
pid_t pid;
char *p;
fd = mkstemp (tmpfname);
if (fd == -1)
{
printf ("cannot open temporary file: %m\n");
return 1;
}
/* Make sure it is always removed. */
unlink (tmpfname);
/* Create one page of data. */
memset (data, '\0', ps);
/* Write the data to the file. */
if (write (fd, data, ps) != (ssize_t) ps)
{
puts ("short write");
return 1;
}
mem = mmap (NULL, ps, PROT_READ | PROT_WRITE, MAP_SHARED, fd, 0);
if (mem == MAP_FAILED)
{
printf ("mmap failed: %m\n");
return 1;
}
m = (pthread_mutex_t *) (((uintptr_t) mem + __alignof (pthread_mutex_t))
& ~(__alignof (pthread_mutex_t) - 1));
p = (char *) (m + 1);
if (pthread_mutexattr_init (&a) != 0)
{
puts ("mutexattr_init failed");
return 1;
}
if (pthread_mutexattr_setpshared (&a, PTHREAD_PROCESS_SHARED) != 0)
{
puts ("mutexattr_setpshared failed");
return 1;
}
if (pthread_mutexattr_settype (&a, PTHREAD_MUTEX_RECURSIVE) != 0)
{
puts ("mutexattr_settype failed");
return 1;
}
if (pthread_mutex_init (m, &a) != 0)
{
puts ("mutex_init failed");
return 1;
}
if (pthread_mutex_lock (m) != 0)
{
puts ("mutex_lock failed");
return 1;
}
if (pthread_mutexattr_destroy (&a) != 0)
{
puts ("mutexattr_destroy failed");
return 1;
}
puts ("going to fork now");
pid = fork ();
if (pid == -1)
{
puts ("fork failed");
return 1;
}
else if (pid == 0)
{
if (pthread_mutex_trylock (m) == 0)
{
puts ("child: mutex_trylock succeeded");
exit (1);
}
if (pthread_mutex_unlock (m) == 0)
{
puts ("child: mutex_unlock succeeded");
exit (1);
}
struct timeval tv;
gettimeofday (&tv, NULL);
struct timespec ts;
TIMEVAL_TO_TIMESPEC (&tv, &ts);
ts.tv_nsec += 500000000;
if (ts.tv_nsec >= 1000000000)
{
++ts.tv_sec;
ts.tv_nsec -= 1000000000;
}
int e = pthread_mutex_timedlock (m, &ts);
if (e == 0)
{
puts ("child: mutex_timedlock succeeded");
exit (1);
}
if (e != ETIMEDOUT)
{
puts ("child: mutex_timedlock didn't time out");
exit (1);
}
alarm (1);
pthread_mutex_lock (m);
puts ("child: mutex_lock returned");
exit (0);
}
sleep (2);
int status;
if (TEMP_FAILURE_RETRY (waitpid (pid, &status, 0)) != pid)
{
puts ("waitpid failed");
return 1;
}
if (! WIFSIGNALED (status))
{
puts ("child not killed by signal");
return 1;
}
if (WTERMSIG (status) != SIGALRM)
{
puts ("child not killed by SIGALRM");
return 1;
}
return 0;
#endif
}
#define TIMEOUT 3
#define TEST_FUNCTION do_test ()
#include "../test-skeleton.c"