1 #include "pseudo_barrier.h"
2 #include "thread.h"
3 #include <chrono>
4 #include <cinttypes>
5 #include <csignal>
6 #include <cstdio>
7 #include <cstdlib>
8 #include <cstring>
9 #include <thread>
10 #include <unistd.h>
11 #include <vector>
12 
13 pseudo_barrier_t barrier;
14 
15 static void sigusr1_handler(int signo) {
16   char buf[100];
17   std::snprintf(buf, sizeof(buf),
18                 "received SIGUSR1 on thread id: %" PRIx64 "\n",
19                 get_thread_id());
20   write(STDOUT_FILENO, buf, strlen(buf));
21 }
22 
23 static void thread_func() {
24   pseudo_barrier_wait(barrier);
25   for (int i = 0; i < 300; ++i) {
26     std::printf("thread %" PRIx64 " running\n", get_thread_id());
27     std::this_thread::sleep_for(std::chrono::milliseconds(200));
28   }
29 }
30 
31 int main(int argc, char **argv) {
32   int num = atoi(argv[1]);
33 
34   pseudo_barrier_init(barrier, num + 1);
35 
36   signal(SIGUSR1, sigusr1_handler);
37 
38   std::vector<std::thread> threads;
39   for(int i = 0; i < num; ++i)
40     threads.emplace_back(thread_func);
41 
42   pseudo_barrier_wait(barrier);
43 
44   std::puts("@started");
45 
46   for (std::thread &thread : threads)
47     thread.join();
48   return 0;
49 }
50