gettid - 获取线程标识

内容简介

#include <sys/types.h> pid_t gettid(void);

描述

gettid() returns the thread ID of the current process. This is equal to the process ID (as returned by getpid(2)), unless the process is part of a thread group (created by specifying the CLONE_THREAD flag to the clone(2) system call). All processes in the same thread group have the same PID, but each one has a unique TID.

返回值

如果成功，返回当前进程的线程ID。

错误

这个调用永远是成功的。

遵循于

gettid() 是Linux特有的，并应在该旨在是可移植的程序不被使用。

注意

Glibc does not provide a wrapper for this system call; call it using syscall(2).

另请参阅

• clone (2)

• fork (2)

• getpid (2)

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