prctl.2: Add health warning

[thirdparty/man-pages.git] / man2 / sigwaitinfo.2

diff --git a/man2/sigwaitinfo.2 b/man2/sigwaitinfo.2
index eb3b725af7c0788bb0297b7b73eea081aa368008..4aa311ab9d9b3cfbfd182da6bf839dbabc7b4a62 100644 (file)
--- a/man2/sigwaitinfo.2
+++ b/man2/sigwaitinfo.2
@@ -22,25 +22,25 @@
 .\" the source, must acknowledge the copyright and authors of this work.
 .\" %%%LICENSE_END
 .\"
-.TH SIGWAITINFO 2 2017-05-03 "Linux" "Linux Programmer's Manual"
+.TH SIGWAITINFO 2 2017-09-15 "Linux" "Linux Programmer's Manual"
 .SH NAME
 sigwaitinfo, sigtimedwait, rt_sigtimedwait \- synchronously wait
 for queued signals
 .SH SYNOPSIS
 .nf
 .B #include <signal.h>
-.sp
+.PP
 .BI "int sigwaitinfo(const sigset_t *" set ", siginfo_t *" info ");"
-.sp
+.PP
 .BI "int sigtimedwait(const sigset_t *" set ", siginfo_t *" info ", "
 .BI "                 const struct timespec *" timeout ");"
 .fi
-.sp
+.PP
 .in -4n
 Feature Test Macro Requirements for glibc (see
 .BR feature_test_macros (7)):
 .in
-.sp
+.PP
 .BR sigwaitinfo (),
 .BR sigtimedwait ():
 _POSIX_C_SOURCE\ >=\ 199309L
@@ -54,7 +54,7 @@ is pending
 is already pending for the calling thread,
 .BR sigwaitinfo ()
 will return immediately.)
-
+.PP
 .BR sigwaitinfo ()
 removes the signal from the set of pending
 signals and returns the signal number as its function result.
@@ -86,16 +86,16 @@ the thread is suspended waiting for a signal.
 and kernel scheduling delays mean that the interval
 may overrun by a small amount.)
 This argument is of the following type:
-.sp
+.PP
 .in +4n
-.nf
+.EX
 struct timespec {
     long    tv_sec;         /* seconds */
     long    tv_nsec;        /* nanoseconds */
 }
-.fi
+.EE
 .in
-.sp
+.PP
 If both fields of this structure are specified as 0, a poll is performed:
 .BR sigtimedwait ()
 returns immediately, either with information about a signal that
@@ -151,18 +151,18 @@ a thread other than the one calling
 .BR sigwaitinfo ()
 or
 .BR sigtimedwait ()).
-
+.PP
 The set of signals that is pending for a given thread is the
 union of the set of signals that is pending specifically for that thread
 and the set of signals that is pending for the process as a whole (see
 .BR signal (7)).
-
+.PP
 Attempts to wait for
 .B SIGKILL
 and
 .B SIGSTOP
 are silently ignored.
-
+.PP
 If multiple threads of a process are blocked
 waiting for the same signal(s) in
 .BR sigwaitinfo ()
@@ -171,7 +171,7 @@ or
 then exactly one of the threads will actually receive the
 signal if it becomes pending for the process as a whole;
 which of the threads receives the signal is indeterminate.
-
+.PP
 .BR sigwaitinfo ()
 or
 .BR sigtimedwait (),
@@ -183,7 +183,7 @@ or the
 .BR SIGFPE
 signal that results from an arithmetic error.
 Such signals can be caught only via signal handler.
-
+.PP
 POSIX leaves the meaning of a NULL value for the
 .I timeout
 argument of
@@ -198,7 +198,7 @@ On Linux,
 .BR sigwaitinfo ()
 is a library function implemented on top of
 .BR sigtimedwait ().
-
+.PP
 The glibc wrapper functions for
 .BR sigwaitinfo ()
 and
@@ -208,7 +208,7 @@ are used internally by the NPTL threading implementation.
 See
 .BR nptl (7)
 for details.
-
+.PP
 The original Linux system call was named
 .BR sigtimedwait ().
 However, with the addition of real-time signals in Linux 2.2,