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gettid.2: Glibc provides a wrapper since version 2.30 

Signed-off-by: Michael Kerrisk <mtk.manpages@gmail.com>
This commit is contained in:
Michael Kerrisk 2019-02-21 14:00:32 +01:00
parent 563bf760bf
commit ed474f00fe
1 changed files with 6 additions and 8 deletions
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14
man2/gettid.2
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@ -32,9 +32,6 @@ gettid \- get thread identification
.PP
.B pid_t gettid(void);
.fi
.PP
.IR Note :
There is no glibc wrapper for this system call; see NOTES.
.SH DESCRIPTION
.BR gettid ()
returns the caller's thread ID (TID).
@ -55,16 +52,17 @@ This call is always successful.
The
.BR gettid ()
system call first appeared on Linux in kernel 2.4.11.
Library support was added in glibc 2.30.
(Earlier glibc versions did not provide a wrapper for this system call,
.\" FIXME . See http://sourceware.org/bugzilla/show_bug.cgi?id=6399
.\" "gettid() should have a wrapper"
necessitating the use of
.BR syscall (2).)
.SH CONFORMING TO
.BR gettid ()
is Linux-specific and should not be used in programs that
are intended to be portable.
.SH NOTES
Glibc does not provide a wrapper for this system call; call it using
.BR syscall (2).
.\" FIXME . See http://sourceware.org/bugzilla/show_bug.cgi?id=6399
.\" "gettid() should have a wrapper"
.PP
The thread ID returned by this call is not the same thing as a
POSIX thread ID (i.e., the opaque value returned by
.BR pthread_self (3)).