1 files changed, 93 insertions, 0 deletions
diff --git a/os/kernel/include/chheap.h b/os/kernel/include/chheap.h
new file mode 100644
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--- /dev/null
+++ b/os/kernel/include/chheap.h
@@ -0,0 +1,93 @@
+/*
+    ChibiOS/RT - Copyright (C) 2006,2007,2008,2009,2010,
+                 2011,2012,2013 Giovanni Di Sirio.
+
+    This file is part of ChibiOS/RT.
+
+    ChibiOS/RT is free software; you can redistribute it and/or modify
+    it under the terms of the GNU General Public License as published by
+    the Free Software Foundation; either version 3 of the License, or
+    (at your option) any later version.
+
+    ChibiOS/RT is distributed in the hope that it will be useful,
+    but WITHOUT ANY WARRANTY; without even the implied warranty of
+    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+    GNU General Public License for more details.
+
+    You should have received a copy of the GNU General Public License
+    along with this program.  If not, see <http://www.gnu.org/licenses/>.
+*/
+
+/**
+ * @file    chheap.h
+ * @brief   Heaps macros and structures.
+ *
+ * @addtogroup heaps
+ * @{
+ */
+
+#ifndef _CHHEAP_H_
+#define _CHHEAP_H_
+
+#if CH_USE_HEAP || defined(__DOXYGEN__)
+
+/*
+ * Module dependencies check.
+ */
+#if !CH_USE_MEMCORE && !CH_USE_MALLOC_HEAP
+#error "CH_USE_HEAP requires CH_USE_MEMCORE or CH_USE_MALLOC_HEAP"
+#endif
+
+#if !CH_USE_MUTEXES && !CH_USE_SEMAPHORES
+#error "CH_USE_HEAP requires CH_USE_MUTEXES and/or CH_USE_SEMAPHORES"
+#endif
+
+typedef struct memory_heap MemoryHeap;
+
+/**
+ * @brief   Memory heap block header.
+ */
+union heap_header {
+  stkalign_t align;
+  struct {
+    union {
+      union heap_header *next;      /**< @brief Next block in free list.    */
+      MemoryHeap        *heap;      /**< @brief Block owner heap.           */
+    } u;                            /**< @brief Overlapped fields.          */
+    size_t              size;       /**< @brief Size of the memory block.   */
+  } h;
+};
+
+/**
+ * @brief   Structure describing a memory heap.
+ */
+struct memory_heap {
+  memgetfunc_t          h_provider; /**< @brief Memory blocks provider for
+                                                this heap.                  */
+  union heap_header     h_free;     /**< @brief Free blocks list header.    */
+#if CH_USE_MUTEXES
+  Mutex                 h_mtx;      /**< @brief Heap access mutex.          */
+#else
+  Semaphore             h_sem;      /**< @brief Heap access semaphore.      */
+#endif
+};
+
+#ifdef __cplusplus
+extern "C" {
+#endif
+  void _heap_init(void);
+#if !CH_USE_MALLOC_HEAP
+  void chHeapInit(MemoryHeap *heapp, void *buf, size_t size);
+#endif
+  void *chHeapAlloc(MemoryHeap *heapp, size_t size);
+  void chHeapFree(void *p);
+  size_t chHeapStatus(MemoryHeap *heapp, size_t *sizep);
+#ifdef __cplusplus
+}
+#endif
+
+#endif /* CH_USE_HEAP */
+
+#endif /* _CHHEAP_H_ */
+
+/** @} */