初次提交，包含c语言实现的，cirbuff和varray

c/varray/varray.c

@@ -0,0 +1,78 @@
+/*
+ * varray.c - 动态数组的实现
+ *
+ */
+#include <malloc.h>
+#include <string.h>
+
+#include "varray.h"
+
+// #define CLEAR_FREE_MEM
+
+
+
+
+bool varray_init(varray_t *varray, uint32_t bsize)
+{
+    struct varray_inside *va_in = (struct varray_inside *)varray;
+    va_in->bsize = bsize;
+
+    if ((va_in->buff = (uint8_t *)malloc(va_in->bsize)) == NULL)
+    {
+        return 0;
+    }
+
+    va_in->size = va_in->bsize;
+
+#ifdef CLEAR_FREE_MEM
+    memset(va_in->buff, 0, va_in->size);
+#endif /* CLEAR_FREE_MEM */
+
+    return 1;
+}
+
+
+bool check_varray(varray_t *varray, uint32_t req_size)
+{
+    uint8_t *new_buff = NULL;
+    uint32_t new_size = 0;
+    struct varray_inside *va_in = (struct varray_inside *)varray;
+
+    if (req_size <= va_in->size)
+        return 1;
+
+    // 确定要分配空间的大小
+    new_size = (req_size % va_in->bsize == 0) ?
+        req_size : (req_size / va_in->bsize + 1) * va_in->bsize;
+    if ((new_buff = (uint8_t *)realloc(va_in->buff, new_size)) == NULL)
+        return 0;
+
+    if (va_in->buff != new_buff)
+        free(va_in->buff);
+
+
+    va_in->buff = new_buff;
+#ifdef CLEAR_FREE_MEM
+    memset(&va_in->buff[va_in->size], 0, new_size - va_in->size);
+#endif /* CLEAR_FREE_MEM */
+    va_in->size = new_size;
+
+    return 1;
+}
+
+void destory_varray(varray_t *varray)
+{
+    struct varray_inside *va_in = (struct varray_inside *)varray;
+
+    if (va_in->buff != NULL)
+    {
+        free(va_in->buff);
+        va_in->buff = NULL;
+    }
+    va_in->size = 0;
+    va_in->bsize = 0;
+    return;
+}
+
+
+

c/varray/varray.h

@@ -0,0 +1,22 @@
+/*
+ * varray.h - 动态数组实现的声明
+ */
+
+#include <stdint.h>
+#include <stdbool.h>
+
+
+struct varray_inside
+{
+    uint8_t *buff;    //
+    uint32_t size;     //
+    uint32_t bsize;    //
+};
+
+typedef const struct varray_inside varray_t;
+
+
+
+bool varray_init(varray_t *varray, uint32_t bsize);
+bool check_varray(varray_t *varray, uint32_t req_size);
+void destory_varray(varray_t *varray);

c/varray/varray_test.c

@@ -0,0 +1,9 @@
+/*
+ * varray_test.c - 测试文件
+ */
+
+int main(int argc, char const* argv[])
+{
+
+    return 0;
+}