Initial checkin

component/os/os_dep/include/tcm_heap.h

@@ -0,0 +1,66 @@
+#ifndef STRUCT_HEAP_H
+#define STRUCT_HEAP_H
+
+//#include <stdio.h>
+#include <stdint.h>
+#include <osdep_service.h>
+
+/* NOTE: struct size must be a 2's power! */
+typedef struct _MemChunk
+{
+	struct _MemChunk *next;
+	int size;
+} MemChunk;
+
+typedef MemChunk heap_buf_t;
+
+/// A heap
+typedef struct Heap
+{
+	struct _MemChunk *FreeList;     ///< Head of the free list
+} Heap;
+
+/**
+ * Utility macro to allocate a heap of size \a size.
+ *
+ * \param name Variable name for the heap.
+ * \param size Heap size in bytes.
+ */
+#define HEAP_DEFINE_BUF(name, size) \
+	heap_buf_t name[((size) + sizeof(heap_buf_t) - 1) / sizeof(heap_buf_t)]
+
+/// Initialize \a heap within the buffer pointed by \a memory which is of \a size bytes
+void tcm_heap_init(void);
+
+/// Allocate a chunk of memory of \a size bytes from the heap
+void *tcm_heap_allocmem(int size);
+
+/// Free a chunk of memory of \a size bytes from the heap
+void tcm_heap_freemem(void *mem, int size);
+
+int tcm_heap_freeSpace(void);
+
+#define HNEW(heap, type) \
+	(type*)tcm_heap_allocmem(heap, sizeof(type))
+
+#define HNEWVEC(heap, type, nelem) \
+	(type*)tcm_heap_allocmem(heap, sizeof(type) * (nelem))
+
+#define HDELETE(heap, type, mem) \
+	tcm_heap_freemem(heap, mem, sizeof(type))
+
+#define HDELETEVEC(heap, type, nelem, mem) \
+	tcm_heap_freemem(heap, mem, sizeof(type) * (nelem))
+
+
+/**
+ * \name Compatibility interface with C standard library
+ * \{
+ */
+void *tcm_heap_malloc(int size);
+void *tcm_heap_calloc(int size);
+void tcm_heap_free(void * mem);
+/** \} */
+
+
+#endif /* STRUCT_HEAP_H */