mm: Break up mm_user.c and mm_kernel.c into separate files for better symmetry

1 files changed, 120 insertions, 0 deletions

diff --git a/nuttx/mm/kmm_heapmember.c b/nuttx/mm/kmm_heapmember.c
new file mode 100644
index 000000000..01fa8b53c
--- /dev/null
+++ b/nuttx/mm/kmm_heapmember.c
@@ -0,0 +1,120 @@
+/************************************************************************
+ * mm/kmm_heapmember.c
+ *
+ *   Copyright (C) 2013-2014 Gregory Nutt. All rights reserved.
+ *   Author: Gregory Nutt <gnutt@nuttx.org>
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ *
+ * 1. Redistributions of source code must retain the above copyright
+ *    notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in
+ *    the documentation and/or other materials provided with the
+ *    distribution.
+ * 3. Neither the name NuttX nor the names of its contributors may be
+ *    used to endorse or promote products derived from this software
+ *    without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+ * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+ * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
+ * FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE
+ * COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
+ * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING,
+ * BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS
+ * OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED
+ * AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+ * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN
+ * ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
+ * POSSIBILITY OF SUCH DAMAGE.
+ *
+ ************************************************************************/
+
+/************************************************************************
+ * Included Files
+ ************************************************************************/
+
+#include <nuttx/config.h>
+
+#if defined(CONFIG_MM_KERNEL_HEAP) && defined(CONFIG_DEBUG)
+
+/************************************************************************
+ * Pre-processor definition
+ ************************************************************************/
+
+/************************************************************************
+ * Private Types
+ ************************************************************************/
+
+/************************************************************************
+ * Public Data
+ ************************************************************************/
+
+/************************************************************************
+ * Private Functions
+ ************************************************************************/
+
+/************************************************************************
+ * Public Functions
+ ************************************************************************/
+
+/************************************************************************
+ * Name: kmm_heapmember
+ *
+ * Description:
+ *   Check if an address lies in the kernel heap.
+ *
+ * Parameters:
+ *   mem - The address to check
+ *
+ * Return Value:
+ *   true if the address is a member of the kernel heap.  false if not
+ *   not.  If the address is not a member of the kernel heap, then it
+ *   must be a member of the user-space heap (unchecked)
+ *
+ ************************************************************************/
+
+bool kmm_heapmember(FAR void *mem)
+{
+#if CONFIG_MM_REGIONS > 1
+  int i;
+
+  /* A valid address from the kernel heap for this region would have to lie
+   * between the region's two guard nodes.
+   */
+
+  for (i = 0; i < g_kmmheap.mm_nregions; i++)
+    {
+      if (mem > (FAR void *)g_kmmheap.mm_heapstart[i] &&
+          mem < (FAR void *)g_kmmheap.mm_heapend[i])
+        {
+          return true;
+        }
+    }
+
+  /* The address does not like any any region assigned to kernel heap */
+
+  return false;
+
+#else
+  /* A valid address from the kernel heap would have to lie between the
+   * two guard nodes.
+   */
+
+  if (mem > (FAR void *)g_kmmheap.mm_heapstart[0] &&
+      mem < (FAR void *)g_kmmheap.mm_heapend[0])
+    {
+      return true;
+    }
+
+  /* Otherwise, the address does not lie in the kernel heap */
+
+  return false;
+
+#endif
+}
+
+#endif /* CONFIG_MM_KERNEL_HEAP && CONFIG_DEBUG */