From 17e9aa3a1061d02c52a5275328188aa4bd86d8e0 Mon Sep 17 00:00:00 2001
From: Erik Strand <erik.strand@cba.mit.edu>
Date: Sun, 25 Nov 2018 17:53:32 -0500
Subject: [PATCH] Add some more basic examples to thread.cpp
---
thread.cpp | 25 +++++++++++++++++++++----
1 file changed, 21 insertions(+), 4 deletions(-)
diff --git a/thread.cpp b/thread.cpp
index 94ab3f5..0494f73 100644
--- a/thread.cpp
+++ b/thread.cpp
@@ -1,13 +1,30 @@
#include <thread>
#include <iostream>
-void thread_method() {
- std::cout << "hello thread" << std::endl;
+void thread_method(int i) {
+ std::cout << "hello thread " << i << std::endl;
}
+struct ThreadObject {
+ void operator()(int i) const {
+ std::cout << "hello object " << i << std::endl;
+ }
+};
+
int main() {
- std::thread thread(thread_method);
- thread.join();
+ // Note that no care is taken to avoid race conditions around the global object std::cout.
+ // Arguments are copied into the child threads.
+ auto function_thread = std::thread(thread_method, 1);
+ auto object_thread = std::thread(ThreadObject(), 2);
+ auto lambda_thread = std::thread([](int i) {
+ std::cout << "hello lambda " << i << std::endl;
+ }, 3);
+
+ // Without these, the main thread could terminate before the children complete.
+ function_thread.join();
+ object_thread.join();
+ lambda_thread.join();
+
return 0;
}
--
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