测试用例

Foundation/c_ArrayQueue.c

@@ -1,7 +1,8 @@
 #include <c_ArrayQueue.h>
 #include <c_Memory.h>
 
-#define DEFAULT_INITIAL_CAPACITY 4
+#define DEFAULT_INITIAL_CAPACITY    4
+#define MIN_SHRINK_CAPACITY         4
 
 /* ------------------------------------------------------------------------------------------------------------------ */
 /*  */
@@ -72,6 +73,18 @@ c_err_t c_ArrayQueue_Pop(c_ArrayQueue_t* self, void* obj) {
     }
 
     self->size--;
+
+    if (self->size > 0 && self->size <= (self->capacity >> 2)) {
+        c_size_t new_capacity = self->capacity >> 1; // 容量减半
+
+        void* new_array = C_REALLOC(self->array, new_capacity * self->obj_size);
+        if (new_array) { // 如果 realloc 失败不影响原有数据安全，这里采用安全赋值
+            self->array = new_array;
+            self->capacity = new_capacity;
+        }
+    }
+
+
     return C_ERR_OK;
 }