From 185e46f6a05295755f0f4522cf44c93ec8cbd7d1 Mon Sep 17 00:00:00 2001
From: Jennifer Averett <jennifer.averett@oarcorp.com>
Date: Fri, 31 Jan 2014 08:54:45 -0600
Subject: posix: Add POSIX thread affinity attribute support.

With the addition of pthread affinity information in pthread_attr_t,
the existing code for pthread_attr_t had to be adjusted.
---
 cpukit/posix/include/rtems/posix/pthreadimpl.h | 69 +++++++++++++++++++++++++-
 1 file changed, 68 insertions(+), 1 deletion(-)

(limited to 'cpukit/posix/include/rtems/posix/pthreadimpl.h')

diff --git a/cpukit/posix/include/rtems/posix/pthreadimpl.h b/cpukit/posix/include/rtems/posix/pthreadimpl.h
index a65f849c7a..c4ace76d0e 100644
--- a/cpukit/posix/include/rtems/posix/pthreadimpl.h
+++ b/cpukit/posix/include/rtems/posix/pthreadimpl.h
@@ -24,6 +24,7 @@
 #include <rtems/posix/threadsup.h>
 #include <rtems/score/objectimpl.h>
 #include <rtems/score/thread.h>
+#include <rtems/score/assert.h>
 
 #ifdef __cplusplus
 extern "C" {
@@ -48,7 +49,7 @@ POSIX_EXTERN Objects_Information  _POSIX_Threads_Information;
 /**
  * This variable contains the default POSIX Thread attributes.
  */
-extern const pthread_attr_t _POSIX_Threads_Default_attributes;
+extern pthread_attr_t _POSIX_Threads_Default_attributes;
 
 /**
  * When the user configures a set of POSIX API initialization threads,
@@ -76,6 +77,23 @@ void _POSIX_Threads_Manager_initialization(void);
  */
 RTEMS_INLINE_ROUTINE Thread_Control *_POSIX_Threads_Allocate( void );
 
+/**
+ * @brief Copy POSIX Thread attribute structure.
+ *
+ * This routine copies the attr2 thread attribute structure
+ * to the attr1 Thread Attribute structure.
+ *
+ * @param[in] dst_attr is a pointer to the thread attribute
+ * structure to copy into.
+ *
+ * @param[out] src_attr is a pointer to the thread attribute
+ * structure to copy from.
+ */
+RTEMS_INLINE_ROUTINE void _POSIX_Threads_Copy_attributes( 
+  pthread_attr_t        *dst_attr,
+  const pthread_attr_t  *src_attr
+);
+
 /**
  * @brief Free POSIX control block.
  *
@@ -109,6 +127,15 @@ RTEMS_INLINE_ROUTINE Thread_Control *_POSIX_Threads_Get(
   Objects_Locations *location
 );
 
+/**
+ * @brief POSIX threads initialize user threads body.
+ *
+ * This routine initializes the thread attributes structure.
+ */
+RTEMS_INLINE_ROUTINE void _POSIX_Threads_Initialize_attributes( 
+  pthread_attr_t  *attr 
+);
+
 /**
  * @brief Check if a POSIX thread control block is NULL.
  *
@@ -176,6 +203,14 @@ int _POSIX_Thread_Translate_sched_param(
   Thread_CPU_budget_algorithm_callout *budget_callout
 );
 
+/*
+ * rtems_pthread_attribute_compare
+ */
+int rtems_pthread_attribute_compare(
+  const pthread_attr_t *attr1,
+  const pthread_attr_t *attr2
+);
+ 
 /*
  *  _POSIX_Threads_Allocate
  */
@@ -185,6 +220,24 @@ RTEMS_INLINE_ROUTINE Thread_Control *_POSIX_Threads_Allocate( void )
   return (Thread_Control *) _Objects_Allocate( &_POSIX_Threads_Information );
 }
 
+/*
+ * _POSIX_Threads_Copy_attributes
+ */
+
+RTEMS_INLINE_ROUTINE void _POSIX_Threads_Copy_attributes( 
+  pthread_attr_t        *dst_attr,
+  const pthread_attr_t  *src_attr
+)
+{
+  *dst_attr = *src_attr;
+#if defined(__RTEMS_HAVE_SYS_CPUSET_H__)
+  _Assert( 
+    dst_attr->affinitysetsize == sizeof(dst_attr->affinitysetpreallocated)
+  );
+  dst_attr->affinityset = &dst_attr->affinitysetpreallocated;
+#endif
+} 
+
 /*
  *  _POSIX_Threads_Free
  */
@@ -209,6 +262,20 @@ RTEMS_INLINE_ROUTINE Thread_Control *_POSIX_Threads_Get (
     _Objects_Get( &_POSIX_Threads_Information, (Objects_Id)id, location );
 }
 
+/*
+ * _POSIX_Threads_Initialize_attributes
+ */
+
+RTEMS_INLINE_ROUTINE void _POSIX_Threads_Initialize_attributes( 
+  pthread_attr_t  *attr 
+)
+{
+  _POSIX_Threads_Copy_attributes(
+    attr,
+    &_POSIX_Threads_Default_attributes
+  );
+} 
+
 /*
  *  _POSIX_Threads_Is_null
  */
-- 
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