From 8e30a269a21cd61ca1387e666e458e52c0b153ab Mon Sep 17 00:00:00 2001
From: Joel Sherrill <joel.sherrill@OARcorp.com>
Date: Wed, 19 Dec 2007 16:03:54 +0000
Subject: 2007-12-19	Joel Sherrill <joel.sherrill@OARcorp.com>

	* libcsupport/Makefile.am, libcsupport/include/rtems/malloc.h,
	libcsupport/src/free.c, libcsupport/src/malloc.c,
	libcsupport/src/malloc_p.h,
	libcsupport/src/malloc_report_statistics_plugin.c,
	libmisc/shell/shell.c, libmisc/shell/shell.h,
	score/src/objectinitializeinformation.c: Add posix_memalign. Split
	out management of deferred frees to subroutines.
	* libcsupport/src/malloc_deferred.c, libcsupport/src/posix_memalign.c: New files.
---
 cpukit/libcsupport/src/posix_memalign.c | 102 ++++++++++++++++++++++++++++++++
 1 file changed, 102 insertions(+)
 create mode 100644 cpukit/libcsupport/src/posix_memalign.c

(limited to 'cpukit/libcsupport/src/posix_memalign.c')

diff --git a/cpukit/libcsupport/src/posix_memalign.c b/cpukit/libcsupport/src/posix_memalign.c
new file mode 100644
index 0000000000..c3dae3449e
--- /dev/null
+++ b/cpukit/libcsupport/src/posix_memalign.c
@@ -0,0 +1,102 @@
+/*
+ *  posix_memalign()
+ *
+ *  COPYRIGHT (c) 1989-2007.
+ *  On-Line Applications Research Corporation (OAR).
+ *
+ *  The license and distribution terms for this file may be
+ *  found in the file LICENSE in this distribution or at
+ *  http://www.rtems.com/license/LICENSE.
+ *
+ *  $Id$
+ */
+
+#if HAVE_CONFIG_H
+#include "config.h"
+#endif
+
+#ifdef RTEMS_NEWLIB
+#include "malloc_p.h"
+
+#include <stdlib.h>
+#include <errno.h>
+
+int posix_memalign(
+  void   **pointer,
+  size_t   alignment,
+  size_t   size
+)
+{
+  void *return_this;
+
+  /*
+   *  Update call statistics
+   */
+  MSBUMP(memalign_calls, 1);
+
+  /*
+   *  Parameter error checks
+   */
+  if ( !pointer )
+    return EINVAL;
+
+  *pointer = NULL;
+
+  if (((alignment - 1) & alignment) != 0 || (alignment < sizeof(void *)))
+    return EINVAL;
+
+  if ( !size )
+    return EINVAL;
+
+  /*
+   *  Do not attempt to allocate memory if not in correct system state.
+   */
+  if ( _System_state_Is_up(_System_state_Get()) && 
+       !malloc_is_system_state_OK() )
+    return EINVAL;
+
+  /*
+   *
+   *  If some free's have been deferred, then do them now.
+   */
+  malloc_process_deferred_frees();
+
+  #if defined(RTEMS_MALLOC_BOUNDARY_HELPERS)
+    /*
+     *  If the support for a boundary area at the end of the heap
+     *  block allocated is turned on, then adjust the size.
+     */
+    if (rtems_malloc_boundary_helpers)
+      size += (*rtems_malloc_boundary_helpers->overhead)();
+  #endif
+
+  /*
+   *  Perform the aligned allocation requested
+   */
+
+  return_this = _Protected_heap_Allocate_aligned(
+    &RTEMS_Malloc_Heap,
+    size,
+    alignment
+  );
+  if ( !return_this )
+    return ENOMEM;
+
+  /*
+   *  If configured, update the more involved statistics
+   */
+  if ( rtems_malloc_statistics_helpers )
+    (*rtems_malloc_statistics_helpers->at_malloc)(pointer);
+
+  #if defined(RTEMS_MALLOC_BOUNDARY_HELPERS)
+    /*
+     * If configured, set the boundary area
+     */
+    if (rtems_malloc_boundary_helpers)
+      (*rtems_malloc_boundary_helpers->at_malloc)(return_this, size);
+  #endif
+
+  *pointer = return_this; 
+  return 0;
+}
+#endif
-- 
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