55 lines
1.1 KiB
Markdown
55 lines
1.1 KiB
Markdown
|
CountdownLatch for C++ multi-threaded programming
|
||
|
|
================================================
|
||
|
|
|
||
|
|
**CountdownLatch in C++**
|
||
|
|
|
||
|
|
-----------------------
|
||
|
|
countdownlatch is a C++ library providing similar functionalities as availble with standard Java
|
||
|
|
CountdownLatch class. It's main usage is: it allows one or more threads to wait until a set of
|
||
|
|
operations being performed on other threads completes.
|
||
|
|
|
||
|
|
|
||
|
|
**Below is an example regarding how to use the library**
|
||
|
|
|
||
|
|
---
|
||
|
|
|
||
|
|
```c++
|
||
|
|
#include <unistd.h>
|
||
|
|
#include <thread>
|
||
|
|
#include <vector>
|
||
|
|
#include <iostream>
|
||
|
|
#include <countdownlatch.hpp>
|
||
|
|
|
||
|
|
void fun(clatch::countdownlatch *cl) {
|
||
|
|
cl->await();
|
||
|
|
std::cout << "Wait is over " << std::endl;
|
||
|
|
}
|
||
|
|
|
||
|
|
int main() {
|
||
|
|
auto cl = new clatch::countdownlatch(10);
|
||
|
|
int i = 0;
|
||
|
|
std::vector<std::thread*> ts;
|
||
|
|
while (i++ < 2) {
|
||
|
|
std::thread *t = new std::thread(fun, cl);
|
||
|
|
ts.push_back(t);
|
||
|
|
}
|
||
|
|
|
||
|
|
i = 0;
|
||
|
|
while (i++ < 10) {
|
||
|
|
sleep(1);
|
||
|
|
cl->count_down();
|
||
|
|
}
|
||
|
|
i = 0;
|
||
|
|
while (i < 2) {
|
||
|
|
ts[i++]->join();
|
||
|
|
}
|
||
|
|
i = 0;
|
||
|
|
while (i < 2) {
|
||
|
|
delete ts[i++];
|
||
|
|
}
|
||
|
|
delete cl;
|
||
|
|
return 0;
|
||
|
|
}
|
||
|
|
|
||
|
|
```
|