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pthreads.7: Add ref to signal(7) for further info on use of real-time signals 

signal(7) provides some further details on the use of real-time
signals by the two Linux threading implementations.

Signed-off-by: Michael Kerrisk <michael.kerrisk@gmail.com>
This commit is contained in:
Michael Kerrisk 2008-11-18 08:42:20 -05:00
parent 222d90f4e9
commit 8bfd40a95e
1 changed files with 8 additions and 3 deletions
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11
man7/pthreads.7
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@ -21,7 +21,7 @@
.\" Formatted or processed versions of this manual, if unaccompanied by .\" Formatted or processed versions of this manual, if unaccompanied by
.\" the source, must acknowledge the copyright and authors of this work. .\" the source, must acknowledge the copyright and authors of this work.
.\" .\"
.TH PTHREADS 7 2008-11-11 "Linux" "Linux Programmer's Manual" .TH PTHREADS 7 2008-11-18 "Linux" "Linux Programmer's Manual"
.SH NAME .SH NAME
pthreads \- POSIX threads pthreads \- POSIX threads
.SH DESCRIPTION .SH DESCRIPTION
@ -672,7 +672,9 @@ This thread handles thread creation and termination.
(Problems can result if this thread is inadvertently killed.) (Problems can result if this thread is inadvertently killed.)
.IP \- 3 .IP \- 3
Signals are used internally by the implementation. Signals are used internally by the implementation.
On Linux 2.2 and later, the first three real-time signals are used. On Linux 2.2 and later, the first three real-time signals are used
(see also
.BR signal (7)).
On older Linux kernels, On older Linux kernels,
.B SIGUSR1 .B SIGUSR1
and and
@ -769,7 +771,9 @@ With NPTL, all of the threads in a process are placed
in the same thread group; in the same thread group;
all members of a thread groups share the same PID. all members of a thread groups share the same PID.
NPTL does not employ a manager thread. NPTL does not employ a manager thread.
NPTL makes internal use of the first two real-time signals; NPTL makes internal use of the first two real-time signals
(see also
.BR signal (7));
these signals cannot be used in applications. these signals cannot be used in applications.
NPTL still has at least one non-conformance with POSIX.1: NPTL still has at least one non-conformance with POSIX.1:
@ -875,6 +879,7 @@ bash$ $( LD_ASSUME_KERNEL=2.2.5 ldd /bin/ls | grep libc.so | \\
.BR gettid (2), .BR gettid (2),
.BR proc (5), .BR proc (5),
.BR futex (7), .BR futex (7),
.BR signal (7),
.br .br
and various Pthreads manual pages, for example: and various Pthreads manual pages, for example:
.BR pthread_attr_init (3), .BR pthread_attr_init (3),