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T19-Cancel.cpp
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57 lines (45 loc) · 1.69 KB
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/***************************
@Author: Chunel
@Contact: chunel@foxmail.com
@File: T19-Cancel.cpp
@Time: 2023/5/21 21:21
@Desc: 本例子主要展示异步执行的逻辑，和取消执行的操作
***************************/
#include "MyGNode/MyNode1.h"
#include "MyGNode/MyNode2.h"
using namespace CGraph;
void tutorial_cancel() {
GPipelinePtr pipeline = GPipelineFactory::create();
GElementPtr a, b, c, d = nullptr;
CStatus status = pipeline->registerGElement<MyNode1>(&a, {}, "nodeA");
status += pipeline->registerGElement<MyNode1>(&b, {a}, "nodeB");
status += pipeline->registerGElement<MyNode1>(&c, {b}, "nodeC");
status += pipeline->registerGElement<MyNode2>(&d, {c}, "nodeD");
if (!status.isOK()) {
return; // 使用时，请对所有CGraph接口的返回值做判定。今后tutorial例子中省略该操作。
}
pipeline->init();
// 异步执行，并且等待结束
auto result = pipeline->asyncRun();
CGRAPH_ECHO("pipeline async run first time, BEGIN.");
result.wait();
CGRAPH_ECHO("pipeline async run first time, FINISH.");
CGRAPH_ECHO("======================");
result = pipeline->asyncRun();
CGRAPH_ECHO("pipeline async run second time, BEGIN.");
CGRAPH_SLEEP_MILLISECOND(1500)
/**
* pipeline整体流程，正常执行需要4000ms
* 等1500ms之后，手动cancel一下
*/
pipeline->cancel();
CGRAPH_ECHO("pipeline async run second time, CANCEL.");
CGRAPH_ECHO("======================");
result.wait(); // 请务必等待执行完成之后，再进行destroy逻辑
pipeline->destroy();
GPipelineFactory::remove(pipeline);
}
int main () {
tutorial_cancel();
return 0;
}