Adding upstream version 2.8.9rel.1.upstream/2.8.9rel.1upstream

Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>

1 files changed, 183 insertions, 0 deletions

diff --git a/src/LYexit.c b/src/LYexit.c
new file mode 100644
index 0000000..b266117
--- /dev/null
+++ b/src/LYexit.c
@@ -0,0 +1,183 @@
+/*
+ * $LynxId: LYexit.c,v 1.37 2018/03/21 00:50:51 tom Exp $
+ *
+ *	Copyright (c) 1994, University of Kansas, All Rights Reserved
+ *	(most of this file was rewritten in 1996 and 2004).
+ */
+#include <HTUtils.h>
+#include <LYexit.h>
+#include <HTAlert.h>
+#ifndef VMS
+#include <LYGlobalDefs.h>
+#include <LYUtils.h>
+#include <LYSignal.h>
+#include <LYMainLoop.h>
+#endif /* !VMS */
+#include <LYStrings.h>
+#include <LYClean.h>
+
+/*
+ * Flag for outofmem macro.  - FM
+ */
+BOOL LYOutOfMemory = FALSE;
+
+/*
+ * Stack of functions to call upon exit.
+ */
+static void (*callstack[ATEXITSIZE]) (void);
+static int topOfStack = 0;
+
+/*
+ * Capture "atexit()" calls for our own accounting.
+ */
+int LYatexit(void (*function) (void))
+{
+    int result = 0;
+
+    if (topOfStack >= ATEXITSIZE) {
+	CTRACE((tfp, "(LY)atexit: Too many functions, ignoring one!\n"));
+	result = -1;
+    } else {
+	int n;
+	BOOLEAN found = FALSE;
+
+	for (n = 0; n < topOfStack; ++n) {
+	    if (callstack[n] == function) {
+		found = TRUE;
+		break;
+	    }
+	}
+	if (!found) {
+	    callstack[topOfStack++] = function;
+	}
+    }
+    return result;
+}
+
+/*
+ * Purpose:		Call the functions registered with LYatexit
+ * Arguments:		void
+ * Return Value:	void
+ * Remarks/Portability/Dependencies/Restrictions:
+ * Revision History:
+ *	06-15-94	created Lynx 2-3-1 Garrett Arch Blythe
+ */
+static void LYCompleteExit(void)
+{
+    /*
+     * Just loop through registered functions.  This is reentrant if more exits
+     * occur in the registered functions.
+     */
+    while (--topOfStack >= 0) {
+	callstack[topOfStack] ();
+    }
+}
+
+/*
+ * Purpose:		Terminates program, reports memory not freed.
+ * Arguments:		status	Exit code.
+ * Return Value:	void
+ * Remarks/Portability/Dependencies/Restrictions:
+ *	Function calls stdlib.h exit
+ * Revision History:
+ *	06-15-94	created Lynx 2-3-1 Garrett Arch Blythe
+ */
+void LYexit(int status)
+{
+#ifndef VMS			/*  On VMS, the VMSexit() handler does these. - FM */
+#ifdef _WINDOWS
+    DeleteCriticalSection(&critSec_READ);
+
+    WSACleanup();
+#endif
+    if (LYOutOfMemory == TRUE) {
+	/*
+	 * Ignore further interrupts.  - FM
+	 */
+#ifndef NOSIGHUP
+	(void) signal(SIGHUP, SIG_IGN);
+#endif /* NOSIGHUP */
+	(void) signal(SIGTERM, SIG_IGN);
+	(void) signal(SIGINT, SIG_IGN);
+#ifndef __linux__
+#ifdef SIGBUS
+	(void) signal(SIGBUS, SIG_IGN);
+#endif /* SIGBUS */
+#endif /* !__linux__ */
+	(void) signal(SIGSEGV, SIG_IGN);
+	(void) signal(SIGILL, SIG_IGN);
+
+	/*
+	 * Flush all messages.  - FM
+	 */
+	fflush(stderr);
+	fflush(stdout);
+
+	/*
+	 * Deal with curses, if on, and clean up.  - FM
+	 */
+	if (LYCursesON) {
+	    LYSleepAlert();
+	}
+	cleanup_sig(0);
+#ifndef __linux__
+#ifdef SIGBUS
+	signal(SIGBUS, SIG_DFL);
+#endif /* SIGBUS */
+#endif /* !__linux__ */
+	signal(SIGSEGV, SIG_DFL);
+	signal(SIGILL, SIG_DFL);
+    }
+#endif /* !VMS */
+
+    /*
+     * Close syslog before doing atexit-cleanup, since it may use a string
+     * that would be freed there.
+     */
+#ifdef SYSLOG_REQUESTED_URLS
+    LYCloselog();
+#endif
+
+    /*
+     * Do functions registered with LYatexit.  - GAB
+     */
+    LYCompleteExit();
+
+    LYCloseCmdLogfile();
+
+#ifdef exit
+/*  Make sure we use stdlib exit and not LYexit. - GAB
+*/
+#undef exit
+#endif /* exit */
+
+    cleanup_files();		/* if someone starts with LYNXfoo: page */
+#ifndef VMS			/*  On VMS, the VMSexit() handler does these. - FM */
+    fflush(stderr);
+    if (LYOutOfMemory == TRUE) {
+	LYOutOfMemory = FALSE;
+	printf("\r\n%s\r\n\r\n", MEMORY_EXHAUSTED_ABORT);
+	fflush(stdout);
+    }
+    LYCloseTracelog();
+#endif /* !VMS */
+    show_alloc();
+
+#if defined(NCURSES_VERSION) && defined(LY_FIND_LEAKS)
+#if defined(HAVE__NC_FREE_AND_EXIT)
+    _nc_free_and_exit(status);
+#elif defined(HAVE__NC_FREEALL)
+    _nc_freeall();
+#endif
+#endif /* NCURSES_VERSION */
+
+    exit(status);
+}
+
+void outofmem(const char *fname,
+	      const char *func)
+{
+    fprintf(stderr, "\n\n\n%s %s: %s\n", fname, func, MEMORY_EXHAUSTED_ABORTING);
+    LYOutOfMemory = TRUE;
+    LYexit(-1);
+}