Sample that uses a barrier that waits for threads.
The BarrierDemo
function does the following.
-
Uses the
nn::nlib::threading::Barrier::Init
function to set the number of threads to wait for in kNumThread
.
-
Starts
kNumThread
threads, and runs ThreadFunc
.
ThreadFunc
waits for other threads every time it displays to the console.
using ::nlib_ns::threading::Barrier;
using ::nlib_ns::threading::Thread;
const int kNumThread = 8;
Thread g_th[kNumThread];
Barrier g_barrier;
void ThreadFunc(int n) {
g_barrier.Wait();
g_barrier.Wait();
g_barrier.Wait();
}
bool BarrierDemo() {
nlib_printf(
"%d threads run, and sync by a Barrier object.\n", kNumThread);
nlib_printf(
"The Barrier object can sync mutiple times.\n\n");
g_barrier.Init(kNumThread);
int i;
for (i = 0; i < kNumThread; ++i) {
g_th[i].Start(ThreadFunc, i);
}
for (i = 0; i < kNumThread; ++i) {
g_th[i].Join();
}
return true;
}
static bool SampleMain(int, char**) { return BarrierDemo(); }
NLIB_MAINFUNC