|SIGSUSPEND(2)||Linux Programmer's Manual||SIGSUSPEND(2)|
NAMEsigsuspend - wait for a signal
Feature Test Macro Requirements for glibc (see feature_test_macros(7)):
DESCRIPTIONsigsuspend() temporarily replaces the signal mask of the calling process with the mask given by mask and then suspends the process until delivery of a signal whose action is to invoke a signal handler or to terminate a process.
RETURN VALUEsigsuspend() always returns -1, with errno set to inndicate the error (normally, EINTR).
- mask points to memory which is not a valid part of the process address space.
- The call was interrupted by a signal.
NOTESNormally, sigsuspend() is used in conjunction with sigprocmask(2) in order to prevent delivery of a signal during the execution of a critical code section. The caller first blocks the signals with sigprocmask(2). When the critical code has completed, the caller then waits for the signals by calling sigsuspend() with the signal mask that was returned by sigprocmask(2) (in the oldset argument).
See sigsetops(3) for details on manipulating signal sets.
SEE ALSOkill(2), pause(2), sigaction(2), signal(2), sigprocmask(2), sigwaitinfo(2), sigsetops(3), sigwait(3), signal(7)
COLOPHONThis page is part of release 3.53 of the Linux man-pages project. A description of the project, and information about reporting bugs, can be found at http://www.kernel.org/doc/man-pages/.