From 2837a5eace3af05a8eb2047a5b119cf1952cc631 Mon Sep 17 00:00:00 2001
From: Joel Sherrill <joel.sherrill@OARcorp.com>
Date: Fri, 6 Dec 2002 13:48:27 +0000
Subject: 2002-12-06	Vladimir Nesic <vnesic@dkts.co.yu>

	* inline/rtems/posix/cond.inl, macros/rtems/posix/cond.inl:
	Implemented PTHREAD_COND_INITIALIZER support.  Vladimir implemented
	the inline version and Joel adapted it to the macro version.
---
 cpukit/posix/macros/rtems/posix/cond.inl | 45 ++++++++++++++++++++++++++------
 1 file changed, 37 insertions(+), 8 deletions(-)

(limited to 'cpukit/posix/macros')

diff --git a/cpukit/posix/macros/rtems/posix/cond.inl b/cpukit/posix/macros/rtems/posix/cond.inl
index 96557a36e1..a6d3b26a22 100644
--- a/cpukit/posix/macros/rtems/posix/cond.inl
+++ b/cpukit/posix/macros/rtems/posix/cond.inl
@@ -3,7 +3,7 @@
  *  This include file contains the macro implementation of the private 
  *  inlined routines for POSIX condition variables.
  *
- *  COPYRIGHT (c) 1989-1999.
+ *  COPYRIGHT (c) 1989-2002.
  *  On-Line Applications Research Corporation (OAR).
  *
  *  The license and distribution terms for this file may be
@@ -16,6 +16,8 @@
 #ifndef __RTEMS_POSIX_CONDITION_VARIABLES_inl
 #define __RTEMS_POSIX_CONDITION_VARIABLES_inl
  
+#include <pthread.h>
+
 /*PAGE
  *
  *  _POSIX_Condition_variables_Allocate
@@ -28,6 +30,10 @@
 /*PAGE
  *
  *  _POSIX_Condition_variables_Free
+ *
+ *  NOTE: The support macro makes it possible for both to use exactly
+ *        the same code to check for NULL id pointer and
+ *        PTHREAD_COND_INITIALIZER without adding overhead.
  */
  
 #define _POSIX_Condition_variables_Free( _the_condition_variable ) \
@@ -37,21 +43,44 @@
 /*PAGE
  *
  *  _POSIX_Condition_variables_Get
+ *
+ *  NOTE: The support macro makes it possible for both to use exactly
+ *        the same code to check for NULL id pointer and
+ *        PTHREAD_COND_INITIALIZER without adding overhead.
  */
+
+#define ___POSIX_Condition_variables_Get_support( _id, _location ) \
+  do { \
+    int _status; \
+    \
+    if ( !_id ) { \
+      *_location = OBJECTS_ERROR; \
+      return (POSIX_Condition_variables_Control *) 0; \
+    }  \
+    \
+    if ( *_id == PTHREAD_COND_INITIALIZER ) { \
+      /* \
+       *  Do an "auto-create" here. \
+       */ \
+    \
+      _status = pthread_cond_init( _id, 0 ); \
+      if ( _status ) { \
+        *_location = OBJECTS_ERROR;  \
+        return (POSIX_Condition_variables_Control *) 0; \
+      } \
+    } \
+  } while (0)
+ 
  
-/* XXX how to write this as a macro */
 static POSIX_Condition_variables_Control *_POSIX_Condition_variables_Get (
   Objects_Id        *id,
   Objects_Locations *location
 )
 {
-/* XXX should support COND_INITIALIZER */
-  if ( id )
-    return (POSIX_Condition_variables_Control *)
-      _Objects_Get( &_POSIX_Condition_variables_Information, *id, location );
+  ___POSIX_Condition_variables_Get_support( id, location );
 
-  *location = OBJECTS_ERROR;
-  return NULL;
+  return (POSIX_Condition_variables_Control *)
+      _Objects_Get( &_POSIX_Condition_variables_Information, *id, location );
 }
  
 /*PAGE
-- 
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