forked from ChunelFeng/CGraph
-
Notifications
You must be signed in to change notification settings - Fork 0
Expand file tree
/
Copy pathT24-Fence.cpp
More file actions
58 lines (47 loc) · 2.15 KB
/
T24-Fence.cpp
File metadata and controls
58 lines (47 loc) · 2.15 KB
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
/***************************
@Author: Chunel
@Contact: chunel@foxmail.com
@File: T24-Fence.cpp
@Time: 2023/9/6 23:17
@Desc: 本例主要演示，通过 GFence逻辑，来控制超时节点的等待逻辑
***************************/
#include "MyGNode/MyNode1.h"
#include "MyGNode/MyNode2.h"
using namespace CGraph;
void tutorial_fence() {
CStatus status;
GPipelinePtr pipeline = GPipelineFactory::create();
GElementPtr b, c, e = nullptr;
GFunctionPtr a_function = nullptr;
GFencePtr d_fence = nullptr; // 通过 fence，去等待前方指定的异步节点执行完成的逻辑
status += pipeline->registerGElement<GFunction>(&a_function, {}, "functionA");
status += pipeline->registerGElement<MyNode2>(&b, {a_function}, "nodeB");
status += pipeline->registerGElement<MyNode1>(&c, {a_function}, "nodeC");
status += pipeline->registerGElement<GFence>(&d_fence, {b, c}, "fenceD");
status += pipeline->registerGElement<MyNode1>(&e, {d_fence}, "nodeE");
CSec sec = 5;
a_function->setFunction(CFunctionType::RUN, [a_function, sec] {
CGRAPH_ECHO("[%s] begin sleep for [%ld]s", a_function->getName().c_str(), sec);
CGRAPH_SLEEP_SECOND(sec)
CGRAPH_ECHO("[%s] run finished.", a_function->getName().c_str());
return CStatus();
});
// 设定一个执行 5s的功能，并且让其运行200就进入超时，故后面的 b和c，可以运行起来了
a_function->setTimeout(200, GElementTimeoutStrategy::HOLD_BY_PIPELINE);
b->setTimeout(200, GElementTimeoutStrategy::HOLD_BY_PIPELINE);
/**
* 在这里添加一个栅栏，目的是为了等待 a_function, b 都执行完成之后，后面的逻辑才可以开始
* fence中加入的，必须是异步执行（设置 timeout耗时）的element
* 设定为 HOLD_BY_PIPELINE 的element，如果不加入 fence中，则在 pipeline run结束之前，会等待其执行结束
*/
d_fence->waitGElements({a_function, b});
status = pipeline->process();
if (status.isErr()) {
std::cout << status.getInfo() << std::endl;
}
GPipelineFactory::remove(pipeline);
}
int main () {
tutorial_fence();
return 0;
}