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GIMP Base Library Reference Manual | |
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void (*GimpSignalHandlerFunc) (gint signum); GimpSignalHandlerFunc gimp_signal_private (gint signum, GimpSignalHandlerFunc handler, gint flags);
void (*GimpSignalHandlerFunc) (gint signum);
A prototype for 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).
signum : |
The number of the signal. Useful if different signals are handled by a single handler. |
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 sematics, 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 sa_handler field of the sigaction struct.
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flags : |
Preferences. OR'ed SA_<xxx>. See man sigaction. Corresponds
to the sa_flags field of the sigaction struct.
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| Returns : | A reference to the signal handling function which was
active before the call to gimp_signal_private().
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