1 /*
2  * Copyright (c) 2024 Huawei Device Co., Ltd.
3  * Licensed under the Apache License, Version 2.0 (the "License");
4  * you may not use this file except in compliance with the License.
5  * You may obtain a copy of the License at
6  *
7  *     http://www.apache.org/licenses/LICENSE-2.0
8  *
9  * Unless required by applicable law or agreed to in writing, software
10  * distributed under the License is distributed on an "AS IS" BASIS,
11  * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
12  * See the License for the specific language governing permissions and
13  * limitations under the License.
14  */
15 
16 #ifndef SOFTBUS_FLOW_CONTROL_H
17 #define SOFTBUS_FLOW_CONTROL_H
18 
19 #include "stdint.h"
20 
21 #include "common_list.h"
22 #include "softbus_adapter_thread.h"
23 #include "softbus_error_code.h"
24 
25 #ifdef __cplusplus
26 extern "C" {
27 #endif
28 
29 // invalid parameters range
30 #define MIN_WINDOW_IN_MILLIS 100               // 100ms
31 #define MAX_WINDOW_IN_MILLIS 2000              // 2s
32 #define MIN_QUOTA_IN_BYTES   (10 * 1024)       // 10kB
33 #define MAX_QUOTA_IN_BYTES   (2 * 1024 * 1024) // 2MB
34 
35 struct ConnSlideWindowController {
36     int32_t (*apply)(struct ConnSlideWindowController *self, int32_t expect);
37     int32_t (*enable)(struct ConnSlideWindowController *self, int32_t windowInMillis, int32_t quotaInBytes);
38     int32_t (*disable)(struct ConnSlideWindowController *self);
39 
40     // lock protect fields of this section, as they are access by send thread and modification by config thread
41     SoftBusMutex lock;
42     bool active;
43     int32_t windowInMillis;
44     int32_t quotaInBytes;
45     ListNode histories;
46 };
47 
48 int32_t ConnSlideWindowControllerConstructor(struct ConnSlideWindowController *self);
49 void ConnSlideWindowControllerDestructor(struct ConnSlideWindowController *self);
50 struct ConnSlideWindowController *ConnSlideWindowControllerNew(void);
51 void ConnSlideWindowControllerDelete(struct ConnSlideWindowController *self);
52 
53 #ifdef __cplusplus
54 }
55 #endif
56 
57 #endif // SOFTBUS_FLOW_CONTROL_H
58