C++ Library - <thread>

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Introduction

Thread is a sequence of instructions that can be executed concurrently with other such sequences in multithreading environments, while sharing a same address spac.

Member types

Sr.No.	Member type & description
1	id It is a thread id.
2	Native handle type It is a native handle type.

Member functions

Sr.No.	Member function & description
1	(constructor) It is used to construct thread.
2	(destructor) It is used to destructor thread.
3	operator= It is a move-assign thread.
4	get_id It is used to get thread id.
5	joinable It is used to check if joinable.
6	join It is used to join thread.
7	detach It is used to detach thread.
8	swap It is used to swap threads.
9	native_handle It is used to get native handle.
10	hardware_concurrency [static] It is used to detect hardware concurrency.

Non-member overloads

Sr.No.	Non-member overload & description
1	swap (thread) It is used to swap threads.

Example

In below example for std::thread.

#include <iostream>
#include <thread>

void foo() {
   std::cout << " foo is executing concurrently...\n";
}

void bar(int x) {
   std::cout << " bar is executing concurrently...\n";
}

int main() {
   std::thread first (foo);
   std::thread second (bar,0);

   std::cout << "main, foo and bar now execute concurrently...\n";

   first.join();
   second.join();

   std::cout << "foo and bar completed.\n";

   return 0;
}

The output should be like this −

main, foo and bar now execute concurrently...
 bar is executing concurrently...
 foo is executing concurrently...
foo and bar completed.