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// Copyright (C) 1999-2017
// Smithsonian Astrophysical Observatory, Cambridge, MA, USA
// For conditions of distribution and use, see copyright notice in "copyright"
#ifndef __sigbus_h__
#define __sigbus_h__
#ifdef __WIN32
#define INTERP
#define SETSIGBUS
#define CLEARSIGBUS
#else
// Signal Support
#include <setjmp.h>
#include <signal.h>
static sigjmp_buf crashbuf;
static struct sigaction sigact, osigbus, osigsegv;
static void crashHandler(int dummy) {
siglongjmp(crashbuf, 1);
}
#define INTERP interp
#define SETSIGBUS \
if (sigsetjmp(crashbuf, 1)) { \
Tcl_SetVar2(INTERP, "ds9", "msg", "A SIGBUS or SIGSEGV error has been received.", TCL_GLOBAL_ONLY); \
Tcl_SetVar2(INTERP, "ds9", "msg,level", "error", TCL_GLOBAL_ONLY); \
} \
else { \
sigact.sa_handler = crashHandler; \
sigemptyset(&sigact.sa_mask); \
sigact.sa_flags = 0; \
sigaction(SIGSEGV, &sigact, &osigsegv); \
sigaction(SIGBUS, &sigact, &osigbus);
#define CLEARSIGBUS \
} \
sigaction(SIGSEGV, &osigsegv, NULL); \
sigaction(SIGBUS, &osigbus, NULL);
#endif
#endif
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