os0thread.cc File Reference

The interface to the operating system thread control primitives. More...

#include "univ.i"
#include <atomic>
#include <ios>
#include <sstream>
#include <thread>
#include "ut0ut.h"

Functions
std::string	to_string (std::thread::id thread_id, bool hex_value)
	Returns the string representation of the thread ID supplied. More...

Variables
uint32_t	srv_max_n_threads = 0
	We are prepared for a situation that we have this many threads waiting for a semaphore inside InnoDB. More...
std::atomic_int	os_thread_count
	Number of threads active. More...

Detailed Description

The interface to the operating system thread control primitives.

Created 9/8/1995 Heikki Tuuri

Function Documentation

to_string()

std::string to_string	(	std::thread::id	thread_id,
		bool	hex_value = false
	)

Returns the string representation of the thread ID supplied.

It uses the only standard-compliant way of printing the thread ID.

Parameters

thread_id	The thread ID to convert to string.
hex_value	If true, the conversion will be asked to output in hexadecimal format. The support for it is OS-implementation-dependent and may be ignored.

Variable Documentation

os_thread_count

std::atomic_int os_thread_count

Number of threads active.

srv_max_n_threads

uint32_t srv_max_n_threads = 0

We are prepared for a situation that we have this many threads waiting for a semaphore inside InnoDB.

Maximum number of threads inside InnoDB.

innodb_init_params() sets the value.