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_destroy.c | 169 ++++++++++++++++++++++++-----------------------
 1 file changed, 86 insertions(+), 83 deletions(-)

(limited to 'pthread_rwlock_destroy.c')

diff --git a/pthread_rwlock_destroy.c b/pthread_rwlock_destroy.c
index f759ed0..63d0cfd 100644
--- a/pthread_rwlock_destroy.c
+++ b/pthread_rwlock_destroy.c
@@ -41,100 +41,103 @@
 #include "implement.h"
 
 int
-pthread_rwlock_destroy(pthread_rwlock_t *rwlock)
+pthread_rwlock_destroy (pthread_rwlock_t * rwlock)
 {
-    pthread_rwlock_t rwl;
-    int result = 0, result1 = 0, result2 = 0;
+  pthread_rwlock_t rwl;
+  int result = 0, result1 = 0, result2 = 0;
 
-    if (rwlock == NULL || *rwlock == NULL)
-      {
-	return EINVAL;
-      }
+  if (rwlock == NULL || *rwlock == NULL)
+    {
+      return EINVAL;
+    }
 
-    if (*rwlock != PTHREAD_RWLOCK_INITIALIZER)
-      {
-	rwl = *rwlock;
+  if (*rwlock != PTHREAD_RWLOCK_INITIALIZER)
+    {
+      rwl = *rwlock;
 
-	if (rwl->nMagic != PTW32_RWLOCK_MAGIC)
-	  {
-	    return EINVAL;
-	  }
+      if (rwl->nMagic != PTW32_RWLOCK_MAGIC)
+	{
+	  return EINVAL;
+	}
 
-	if ((result = pthread_mutex_lock(&(rwl->mtxExclusiveAccess))) != 0)
-	  {
-	    return result;
-	  }
+      if ((result = pthread_mutex_lock (&(rwl->mtxExclusiveAccess))) != 0)
+	{
+	  return result;
+	}
 
-	if ((result = pthread_mutex_lock(&(rwl->mtxSharedAccessCompleted))) != 0)
-	  {
-	    (void) pthread_mutex_unlock(&(rwl->mtxExclusiveAccess));
-	    return result;
-	  }
+      if ((result =
+	   pthread_mutex_lock (&(rwl->mtxSharedAccessCompleted))) != 0)
+	{
+	  (void) pthread_mutex_unlock (&(rwl->mtxExclusiveAccess));
+	  return result;
+	}
 
-	/*
-	 * Check whether any threads own/wait for the lock (wait for ex.access);
-	 * report "BUSY" if so.
-	 */
-	if (rwl->nExclusiveAccessCount > 0
-	    || rwl->nSharedAccessCount > rwl->nCompletedSharedAccessCount)
-	  {
-	    result = pthread_mutex_unlock(&(rwl->mtxSharedAccessCompleted));
-	    result1 = pthread_mutex_unlock(&(rwl->mtxExclusiveAccess));
-	    result2 = EBUSY;
-	  }
-	else 
-	  {
-	    rwl->nMagic = 0;
+      /*
+       * Check whether any threads own/wait for the lock (wait for ex.access);
+       * report "BUSY" if so.
+       */
+      if (rwl->nExclusiveAccessCount > 0
+	  || rwl->nSharedAccessCount > rwl->nCompletedSharedAccessCount)
+	{
+	  result = pthread_mutex_unlock (&(rwl->mtxSharedAccessCompleted));
+	  result1 = pthread_mutex_unlock (&(rwl->mtxExclusiveAccess));
+	  result2 = EBUSY;
+	}
+      else
+	{
+	  rwl->nMagic = 0;
 
-	    if ((result = pthread_mutex_unlock(&(rwl->mtxSharedAccessCompleted))) != 0)
-	      {
-		pthread_mutex_unlock(&rwl->mtxExclusiveAccess);
-		return result;
-	      }
+	  if ((result =
+	       pthread_mutex_unlock (&(rwl->mtxSharedAccessCompleted))) != 0)
+	    {
+	      pthread_mutex_unlock (&rwl->mtxExclusiveAccess);
+	      return result;
+	    }
 
-	    if ((result = pthread_mutex_unlock(&(rwl->mtxExclusiveAccess))) != 0)
-	      {
-		return result;
-	      }
+	  if ((result =
+	       pthread_mutex_unlock (&(rwl->mtxExclusiveAccess))) != 0)
+	    {
+	      return result;
+	    }
 
-	    *rwlock = NULL; /* Invalidate rwlock before anything else */
-	    result = pthread_cond_destroy(&(rwl->cndSharedAccessCompleted));
-	    result1 = pthread_mutex_destroy(&(rwl->mtxSharedAccessCompleted));
-	    result2 = pthread_mutex_destroy(&(rwl->mtxExclusiveAccess));
-	    (void) free(rwl);
-	  }
-      }
-    else
-      {
-	/*
-	 * See notes in ptw32_rwlock_check_need_init() above also.
-	 */
-	EnterCriticalSection(&ptw32_rwlock_test_init_lock);
+	  *rwlock = NULL;	/* Invalidate rwlock before anything else */
+	  result = pthread_cond_destroy (&(rwl->cndSharedAccessCompleted));
+	  result1 = pthread_mutex_destroy (&(rwl->mtxSharedAccessCompleted));
+	  result2 = pthread_mutex_destroy (&(rwl->mtxExclusiveAccess));
+	  (void) free (rwl);
+	}
+    }
+  else
+    {
+      /*
+       * See notes in ptw32_rwlock_check_need_init() above also.
+       */
+      EnterCriticalSection (&ptw32_rwlock_test_init_lock);
 
-	/*
-	 * Check again.
-	 */
-	if (*rwlock == PTHREAD_RWLOCK_INITIALIZER)
-	  {
-	    /*
-	     * This is all we need to do to destroy a statically
-	     * initialised rwlock that has not yet been used (initialised).
-	     * If we get to here, another thread
-	     * waiting to initialise this rwlock will get an EINVAL.
-	     */
-	    *rwlock = NULL;
-	  }
-	else
-	  {
-	    /*
-	     * The rwlock has been initialised while we were waiting
-	     * so assume it's in use.
-	     */
-	    result = EBUSY;
-	  }
+      /*
+       * Check again.
+       */
+      if (*rwlock == PTHREAD_RWLOCK_INITIALIZER)
+	{
+	  /*
+	   * This is all we need to do to destroy a statically
+	   * initialised rwlock that has not yet been used (initialised).
+	   * If we get to here, another thread
+	   * waiting to initialise this rwlock will get an EINVAL.
+	   */
+	  *rwlock = NULL;
+	}
+      else
+	{
+	  /*
+	   * The rwlock has been initialised while we were waiting
+	   * so assume it's in use.
+	   */
+	  result = EBUSY;
+	}
 
-	LeaveCriticalSection(&ptw32_rwlock_test_init_lock);
-      }
+      LeaveCriticalSection (&ptw32_rwlock_test_init_lock);
+    }
 
-    return ((result != 0) ? result : ((result1 != 0) ? result1 : result2));
+  return ((result != 0) ? result : ((result1 != 0) ? result1 : result2));
 }
-- 
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