File: main.cpp

package info (click to toggle)
llvm-toolchain-19 1%3A19.1.7-3~deb12u1
  • links: PTS, VCS
  • area: main
  • in suites: bookworm-proposed-updates
  • size: 1,998,492 kB
  • sloc: cpp: 6,951,680; ansic: 1,486,157; asm: 913,598; python: 232,024; f90: 80,126; objc: 75,281; lisp: 37,276; pascal: 16,990; sh: 10,009; ml: 5,058; perl: 4,724; awk: 3,523; makefile: 3,167; javascript: 2,504; xml: 892; fortran: 664; cs: 573
file content (34 lines) | stat: -rw-r--r-- 613 bytes parent folder | download | duplicates (14) 
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
 
#include <thread>

#include "baz.h"

std::condition_variable cv;
std::mutex mutex;

int bar(int i) {
  int j = i * i;
  return j;
}

int foo(int i) { return bar(i); }

void compute_pow(int &n) {
  std::unique_lock<std::mutex> lock(mutex);
  n = foo(n);
  lock.unlock();
  cv.notify_one(); // waiting thread is notified with n == 42 * 42, cv.wait
                   // returns
}

void call_and_wait(int &n) { baz(n, mutex, cv); }

int main() {
  int n = 42;
  std::thread thread_1(call_and_wait, std::ref(n));
  std::thread thread_2(compute_pow, std::ref(n));

  thread_1.join();
  thread_2.join();

  return 0;
}