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void
(*GimpSignalHandlerFunc) (gint signum);
A prototype for a reference to a signal handler functions. Note
that each function which takes or returns a variable of this type
also accepts or may return special values defined by your system's
signal.h header file (like SIG_DFL
or SIG_IGN
).
GimpSignalHandlerFunc gimp_signal_private (gint signum,GimpSignalHandlerFunc handler,gint flags);
This function furnishes a workalike for signal(2) but which internally invokes sigaction(2) after certain sa_flags are set; these primarily to ensure restarting of interrupted system calls. See sigaction(2) It is a aid to transition and not new development: that effort should employ sigaction directly. [gosgood 18.04.2000]
Cause handler
to be run when signum
is delivered. We
use sigaction(2) rather than signal(2) so that we can control the
signal handler's environment completely via flags
: some signal(2)
implementations differ in their semantics, so we need to nail down
exactly what we want. [austin 06.04.2000]
signum |
Selects signal to be handled see man 5 signal (or man 7 signal) |
|
handler |
Handler that maps to signum. Invoked by O/S.
Handler gets signal that caused invocation. Corresponds
to the |
|
flags |
Preferences. OR'ed SA_<xxx>. See man sigaction. Corresponds
to the |
A reference to the signal handling function which was
active before the call to gimp_signal_private().