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Update.

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1998-10-29  Ulrich Drepper  <drepper@cygnus.com>

	* sysdeps/unix/sysv/linux/ttyname_r.c (ttyname_r): Try reading
	/prof/self/fd/FD first.
	* sysdeps/unix/sysv/linux/ttyname.c (ttyname): Likewise.

	* stdio-common/_itoa.h (_fitoa_word): New inline function.  Write
	formatted number starting at given position and return pointer to
	following byte.
	(_fitoa): Likewise, for long long.
This commit is contained in:
Ulrich Drepper
1998-10-29 15:17:25 +00:00
parent 05e951cd1a
commit c5e340c71b
14 changed files with 109 additions and 51 deletions
Download Patch File Download Diff File Expand all files Collapse all files

17
linuxthreads/rwlock.c
View File

@@ -57,7 +57,7 @@ pthread_rwlock_destroy (pthread_rwlock_t *rwlock)
int readers;
_pthread_descr writer;
__pthread_lock (&rwlock->__rw_lock);
__pthread_lock (&rwlock->__rw_lock, NULL);
readers = rwlock->__rw_readers;
writer = rwlock->__rw_writer;
__pthread_unlock (&rwlock->__rw_lock);
@@ -72,11 +72,11 @@ pthread_rwlock_destroy (pthread_rwlock_t *rwlock)
int
pthread_rwlock_rdlock (pthread_rwlock_t *rwlock)
{
pthread_descr self;
pthread_descr self = NULL;
while (1)
{
__pthread_lock (&rwlock->__rw_lock);
__pthread_lock (&rwlock->__rw_lock, self);
if (rwlock->__rw_writer == NULL
|| (rwlock->__rw_kind == PTHREAD_RWLOCK_PREFER_READER_NP
&& rwlock->__rw_readers != 0))
@@ -84,7 +84,8 @@ pthread_rwlock_rdlock (pthread_rwlock_t *rwlock)
break;
/* Suspend ourselves, then try again */
self = thread_self ();
if (self == NULL)
self = thread_self ();
enqueue (&rwlock->__rw_read_waiting, self);
__pthread_unlock (&rwlock->__rw_lock);
suspend (self); /* This is not a cancellation point */
@@ -102,7 +103,7 @@ pthread_rwlock_tryrdlock (pthread_rwlock_t *rwlock)
{
int result = EBUSY;
__pthread_lock (&rwlock->__rw_lock);
__pthread_lock (&rwlock->__rw_lock, NULL);
if (rwlock->__rw_writer == NULL
|| (rwlock->__rw_kind == PTHREAD_RWLOCK_PREFER_READER_NP
&& rwlock->__rw_readers != 0))
@@ -123,7 +124,7 @@ pthread_rwlock_wrlock (pthread_rwlock_t *rwlock)
while(1)
{
__pthread_lock (&rwlock->__rw_lock);
__pthread_lock (&rwlock->__rw_lock, self);
if (rwlock->__rw_readers == 0 && rwlock->__rw_writer == NULL)
{
rwlock->__rw_writer = self;
@@ -144,7 +145,7 @@ pthread_rwlock_trywrlock (pthread_rwlock_t *rwlock)
{
int result = EBUSY;
__pthread_lock (&rwlock->__rw_lock);
__pthread_lock (&rwlock->__rw_lock, NULL);
if (rwlock->__rw_readers == 0 && rwlock->__rw_writer == NULL)
{
rwlock->__rw_writer = thread_self ();
@@ -162,7 +163,7 @@ pthread_rwlock_unlock (pthread_rwlock_t *rwlock)
pthread_descr torestart;
pthread_descr th;
__pthread_lock (&rwlock->__rw_lock);
__pthread_lock (&rwlock->__rw_lock, NULL);
if (rwlock->__rw_writer != NULL)
{
/* Unlocking a write lock. */