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* Versions.def: Add GLIBC_2.4 for libpthread.

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This commit is contained in:
Ulrich Drepper
2005-12-27 01:04:06 +00:00
parent 08f60b258e
commit 1bcfb5a5eb
31 changed files with 981 additions and 59 deletions
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50
nptl/pthread_mutex_unlock.c
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@ -18,6 +18,7 @@
02111-1307 USA. */
#include <errno.h>
#include <stdlib.h>
#include "pthreadP.h"
#include <lowlevellock.h>
@ -28,6 +29,8 @@ __pthread_mutex_unlock_usercnt (mutex, decr)
pthread_mutex_t *mutex;
int decr;
{
int newowner = 0;
switch (__builtin_expect (mutex->__data.__kind, PTHREAD_MUTEX_TIMED_NP))
{
case PTHREAD_MUTEX_RECURSIVE_NP:
@ -52,13 +55,58 @@ __pthread_mutex_unlock_usercnt (mutex, decr)
/* Normal mutex. Nothing special to do. */
break;
case PTHREAD_MUTEX_ROBUST_PRIVATE_RECURSIVE_NP:
/* Recursive mutex. */
if (mutex->__data.__owner == -THREAD_GETMEM (THREAD_SELF, tid))
{
if (--mutex->__data.__count != 0)
/* We still hold the mutex. */
return ENOTRECOVERABLE;
goto notrecoverable;
}
if (mutex->__data.__owner != THREAD_GETMEM (THREAD_SELF, tid))
return EPERM;
if (--mutex->__data.__count != 0)
/* We still hold the mutex. */
return 0;
goto robust;
case PTHREAD_MUTEX_ROBUST_PRIVATE_ERRORCHECK_NP:
/* Error checking mutex. */
if (abs (mutex->__data.__owner) != THREAD_GETMEM (THREAD_SELF, tid)
|| ! lll_mutex_islocked (mutex->__data.__lock))
return EPERM;
/* FALLTHROUGH */
case PTHREAD_MUTEX_ROBUST_PRIVATE_NP:
case PTHREAD_MUTEX_ROBUST_PRIVATE_ADAPTIVE_NP:
/* If the previous owner died and the caller did not succeed in
making the state consistent, mark the mutex as unrecoverable
and make all waiters. */
if (__builtin_expect (mutex->__data.__owner
== -THREAD_GETMEM (THREAD_SELF, tid)
|| (mutex->__data.__owner
== PTHREAD_MUTEX_NOTRECOVERABLE), 0))
notrecoverable:
newowner = PTHREAD_MUTEX_NOTRECOVERABLE;
robust:
/* Remove mutex from the list. */
DEQUEUE_MUTEX (mutex);
break;
default:
/* Correct code cannot set any other type. */
return EINVAL;
}
/* Always reset the owner field. */
mutex->__data.__owner = 0;
mutex->__data.__owner = newowner;
if (decr)
/* One less user. */
--mutex->__data.__nusers;