Revision 79dc0c0d5e6de1fa0deca2a82019ceba23d4d8aa authored by Pranav Bhandarkar on 08 October 2019, 23:56:21 UTC, committed by Pranav Bhandarkar on 08 October 2019, 23:56:21 UTC
1 parent 90701c9
thread_safety.cpp
#include "Halide.h"
#include <stdio.h>
#include <thread>
using namespace Halide;
int main(int argc, char **argv) {
// Test if the compiler itself is thread-safe. This test is
// intended to be run in a thread-sanitizer.
// std::thread has implementation-dependent behavior; some implementations
// may refuse to create an arbitrary number. So let's create a smallish
// number (8) and have each one do enough work that contention is likely
// to be encountered.
constexpr int total_iters = 1024;
constexpr int num_threads = 8;
std::vector<std::thread> threads;
for (int i = 0; i < num_threads; i++) {
threads.emplace_back([=]{
for (int i = 0; i < (total_iters / num_threads); i++) {
Func f;
Var x;
f(x) = x;
f.realize(100);
}
});
}
for (auto &t : threads) {
t.join();
}
printf("Success!\n");
return 0;
}
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