diff options
Diffstat (limited to 'man2/sigwaitinfo.2')
| -rw-r--r-- | man2/sigwaitinfo.2 | 30 |
1 files changed, 15 insertions, 15 deletions
diff --git a/man2/sigwaitinfo.2 b/man2/sigwaitinfo.2 index a5703fc..cf231bc 100644 --- a/man2/sigwaitinfo.2 +++ b/man2/sigwaitinfo.2 @@ -2,7 +2,7 @@ .\" .\" SPDX-License-Identifier: Linux-man-pages-copyleft .\" -.TH sigwaitinfo 2 2023-03-30 "Linux man-pages 6.05.01" +.TH sigwaitinfo 2 2023-10-31 "Linux man-pages 6.7" .SH NAME sigwaitinfo, sigtimedwait, rt_sigtimedwait \- synchronously wait for queued signals @@ -12,19 +12,19 @@ Standard C library .SH SYNOPSIS .nf .B #include <signal.h> -.PP +.P .BI "int sigwaitinfo(const sigset_t *restrict " set , .BI " siginfo_t *_Nullable restrict " info ); .BI "int sigtimedwait(const sigset_t *restrict " set , .BI " siginfo_t *_Nullable restrict " info , .BI " const struct timespec *restrict " timeout ); .fi -.PP +.P .RS -4 Feature Test Macro Requirements for glibc (see .BR feature_test_macros (7)): .RE -.PP +.P .BR sigwaitinfo (), .BR sigtimedwait (): .nf @@ -40,7 +40,7 @@ is pending is already pending for the calling thread, .BR sigwaitinfo () will return immediately.) -.PP +.P .BR sigwaitinfo () removes the signal from the set of pending signals and returns the signal number as its function result. @@ -52,7 +52,7 @@ then the buffer that it points to is used to return a structure of type (see .BR sigaction (2)) containing information about the signal. -.PP +.P If multiple signals in .I set are pending for the caller, the signal that is retrieved by @@ -60,7 +60,7 @@ are pending for the caller, the signal that is retrieved by is determined according to the usual ordering rules; see .BR signal (7) for further details. -.PP +.P .BR sigtimedwait () operates in exactly the same way as .BR sigwaitinfo () @@ -74,7 +74,7 @@ may overrun by a small amount.) This argument is a .BR timespec (3) structure. -.PP +.P 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 @@ -116,7 +116,7 @@ On Linux, .BR sigwaitinfo () is a library function implemented on top of .BR sigtimedwait (). -.PP +.P The glibc wrapper functions for .BR sigwaitinfo () and @@ -126,7 +126,7 @@ are used internally by the NPTL threading implementation. See .BR nptl (7) for details. -.PP +.P The original Linux system call was named .BR sigtimedwait (). However, with the addition of real-time signals in Linux 2.2, @@ -175,18 +175,18 @@ a thread other than the one calling .BR sigwaitinfo () or .BR sigtimedwait ()). -.PP +.P 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 +.P Attempts to wait for .B SIGKILL and .B SIGSTOP are silently ignored. -.PP +.P If multiple threads of a process are blocked waiting for the same signal(s) in .BR sigwaitinfo () @@ -195,7 +195,7 @@ 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 +.P .BR sigwaitinfo () or .BR sigtimedwait (), @@ -207,7 +207,7 @@ or the .B SIGFPE signal that results from an arithmetic error. Such signals can be caught only via signal handler. -.PP +.P POSIX leaves the meaning of a NULL value for the .I timeout argument of |