diff options
Diffstat (limited to 'os/kernel/include/heap.h')
| -rw-r--r-- | os/kernel/include/heap.h | 47 |
1 files changed, 45 insertions, 2 deletions
diff --git a/os/kernel/include/heap.h b/os/kernel/include/heap.h index 4fbd48225..1f07faa91 100644 --- a/os/kernel/include/heap.h +++ b/os/kernel/include/heap.h @@ -27,17 +27,60 @@ #ifndef _HEAP_H_
#define _HEAP_H_
+#if CH_USE_HEAP
+
+/*
+ * Module dependancies check.
+ */
+#if !CH_USE_MEMCORE && !CH_USE_MALLOC_HEAP
+#error "CH_USE_HEAP requires CH_USE_MEM"
+#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.
+ */
+struct heap_header {
+ union {
+ struct heap_header *h_next; /**< @brief Next block in free list. */
+ MemoryHeap *h_heap; /**< @brief Block owner heap. */
+ };
+ size_t h_size; /**< @brief Size of the memory block. */
+};
+
+/**
+ * @brief Structure describing a memory heap.
+ */
+struct memory_heap {
+ memgetfunc_t h_provider; /**< @brief Memory blocks provider for
+ this heap. */
+ struct 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);
- void *chHeapAlloc(size_t size);
+ void chHeapInit(MemoryHeap *heapp, void *buf, size_t size);
+ void *chHeapAlloc(MemoryHeap *heapp, size_t size);
void chHeapFree(void *p);
- size_t chHeapStatus(size_t *sizep);
+ size_t chHeapStatus(MemoryHeap *heapp, size_t *sizep);
#ifdef __cplusplus
}
#endif
+#endif /* CH_USE_HEAP */
+
#endif /* _HEAP_H_ */
/** @} */
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