From 771465fed0cf50ee2dd790723245fc091699c324 Mon Sep 17 00:00:00 2001
From: rpj <rpj>
Date: Mon, 17 May 2004 01:38:02 +0000
Subject: re-indentation, bug fixes, hooks for pre-emptive async cancelation

---
 pthread_rwlock_trywrlock.c | 131 +++++++++++++++++++++++----------------------
 1 file changed, 67 insertions(+), 64 deletions(-)

(limited to 'pthread_rwlock_trywrlock.c')

diff --git a/pthread_rwlock_trywrlock.c b/pthread_rwlock_trywrlock.c
index 6fa92ed..543fdbf 100644
--- a/pthread_rwlock_trywrlock.c
+++ b/pthread_rwlock_trywrlock.c
@@ -41,80 +41,83 @@
 #include "implement.h"
 
 int
-pthread_rwlock_trywrlock(pthread_rwlock_t * rwlock)
+pthread_rwlock_trywrlock (pthread_rwlock_t * rwlock)
 {
-    int result, result1;
-    pthread_rwlock_t rwl;
+  int result, result1;
+  pthread_rwlock_t rwl;
 
-    if (rwlock == NULL || *rwlock == NULL)
-      {
-	return EINVAL;
-      }
+  if (rwlock == NULL || *rwlock == NULL)
+    {
+      return EINVAL;
+    }
 
-    /*
-     * We do a quick check to see if we need to do more work
-     * to initialise a static rwlock. We check
-     * again inside the guarded section of ptw32_rwlock_check_need_init()
-     * to avoid race conditions.
-     */
-    if (*rwlock == PTHREAD_RWLOCK_INITIALIZER)
-      {
-	result = ptw32_rwlock_check_need_init(rwlock);
+  /*
+   * We do a quick check to see if we need to do more work
+   * to initialise a static rwlock. We check
+   * again inside the guarded section of ptw32_rwlock_check_need_init()
+   * to avoid race conditions.
+   */
+  if (*rwlock == PTHREAD_RWLOCK_INITIALIZER)
+    {
+      result = ptw32_rwlock_check_need_init (rwlock);
 
-	if (result != 0 && result != EBUSY)
-	  {
-	    return result;
-	  }
-      }
+      if (result != 0 && result != EBUSY)
+	{
+	  return result;
+	}
+    }
 
-    rwl = *rwlock;
+  rwl = *rwlock;
 
-    if (rwl->nMagic != PTW32_RWLOCK_MAGIC)
-      {
-	return EINVAL;
-      }
+  if (rwl->nMagic != PTW32_RWLOCK_MAGIC)
+    {
+      return EINVAL;
+    }
 
-    if ((result = pthread_mutex_trylock(&(rwl->mtxExclusiveAccess))) != 0)
-      {
-	return result;
-      }
+  if ((result = pthread_mutex_trylock (&(rwl->mtxExclusiveAccess))) != 0)
+    {
+      return result;
+    }
 
-    if ((result = pthread_mutex_trylock(&(rwl->mtxSharedAccessCompleted))) != 0)
-      {
-	result1 = pthread_mutex_unlock(&(rwl->mtxExclusiveAccess));
-	return ((result1 != 0) ? result1 : result);
-      }
+  if ((result =
+       pthread_mutex_trylock (&(rwl->mtxSharedAccessCompleted))) != 0)
+    {
+      result1 = pthread_mutex_unlock (&(rwl->mtxExclusiveAccess));
+      return ((result1 != 0) ? result1 : result);
+    }
 
-    if (rwl->nExclusiveAccessCount == 0) 
-      {
-	if (rwl->nCompletedSharedAccessCount > 0) 
-	  {
-	    rwl->nSharedAccessCount -= rwl->nCompletedSharedAccessCount;
-	    rwl->nCompletedSharedAccessCount = 0;
-	  }
+  if (rwl->nExclusiveAccessCount == 0)
+    {
+      if (rwl->nCompletedSharedAccessCount > 0)
+	{
+	  rwl->nSharedAccessCount -= rwl->nCompletedSharedAccessCount;
+	  rwl->nCompletedSharedAccessCount = 0;
+	}
 
-	if (rwl->nSharedAccessCount > 0) 
-	  {
-	    if ((result = pthread_mutex_unlock(&(rwl->mtxSharedAccessCompleted))) != 0)
-	      {
-		(void) pthread_mutex_unlock(&(rwl->mtxExclusiveAccess));
-		return result;
-	      }
+      if (rwl->nSharedAccessCount > 0)
+	{
+	  if ((result =
+	       pthread_mutex_unlock (&(rwl->mtxSharedAccessCompleted))) != 0)
+	    {
+	      (void) pthread_mutex_unlock (&(rwl->mtxExclusiveAccess));
+	      return result;
+	    }
 
-	    if ((result = pthread_mutex_unlock(&(rwl->mtxExclusiveAccess))) == 0)
-	      {
-		result = EBUSY;
-	      }
-	  }
-	else
-	  {
-	    rwl->nExclusiveAccessCount = 1;
-	  }
-      }
-    else 
-      {
-	result = EBUSY;
-      }
+	  if ((result =
+	       pthread_mutex_unlock (&(rwl->mtxExclusiveAccess))) == 0)
+	    {
+	      result = EBUSY;
+	    }
+	}
+      else
+	{
+	  rwl->nExclusiveAccessCount = 1;
+	}
+    }
+  else
+    {
+      result = EBUSY;
+    }
 
-    return result;
+  return result;
 }
-- 
cgit v1.2.3