diff options
Diffstat (limited to 'upstream/debian-unstable/man3/sigwait.3')
| -rw-r--r-- | upstream/debian-unstable/man3/sigwait.3 | 20 |
1 files changed, 12 insertions, 8 deletions
diff --git a/upstream/debian-unstable/man3/sigwait.3 b/upstream/debian-unstable/man3/sigwait.3 index 38250ec9..6a52ce83 100644 --- a/upstream/debian-unstable/man3/sigwait.3 +++ b/upstream/debian-unstable/man3/sigwait.3 @@ -4,7 +4,7 @@ .\" .\" SPDX-License-Identifier: Linux-man-pages-copyleft .\" -.TH sigwait 3 2023-07-20 "Linux man-pages 6.05.01" +.TH sigwait 3 2024-05-02 "Linux man-pages 6.8" .SH NAME sigwait \- wait for a signal .SH LIBRARY @@ -13,15 +13,15 @@ Standard C library .SH SYNOPSIS .nf .B #include <signal.h> -.PP +.P .BI "int sigwait(const sigset_t *restrict " set ", int *restrict " sig ); .fi -.PP +.P .RS -4 Feature Test Macro Requirements for glibc (see .BR feature_test_macros (7)): .RE -.PP +.P .BR sigwait (): .nf Since glibc 2.26: @@ -36,11 +36,14 @@ function suspends execution of the calling thread until one of the signals specified in the signal set .I set becomes pending. +For a signal to become pending, +it must first be blocked with +.BR sigprocmask (2). The function accepts the signal (removes it from the pending list of signals), and returns the signal number in .IR sig . -.PP +.P The operation of .BR sigwait () is the same as @@ -78,12 +81,13 @@ T{ .BR sigwait () T} Thread safety MT-Safe .TE -.sp 1 .SH VERSIONS .BR sigwait () is implemented using -.BR sigtimedwait (2). -.PP +.BR sigtimedwait (2); +consult its +.BR NOTES . +.P The glibc implementation of .BR sigwait () silently ignores attempts to wait for the two real-time signals that |