Initial commit. This is not going to be useful to you for anything.

1 files changed, 86 insertions, 0 deletions

diff --git a/src/core/panic.c b/src/core/panic.c
new file mode 100644
index 00000000..47556f70
--- /dev/null
+++ b/src/core/panic.c
@@ -0,0 +1,86 @@
+/*
+ * Copyright 2016 Garrett D'Amore <garrett@damore.org>
+ *
+ * Permission is hereby granted, free of charge, to any person obtaining a copy
+ * of this software and associated documentation files (the "Software"),
+ * to deal in the Software without restriction, including without limitation
+ * the rights to use, copy, modify, merge, publish, distribute, sublicense,
+ * and/or sell copies of the Software, and to permit persons to whom
+ * the Software is furnished to do so, subject to the following conditions:
+ *
+ * The above copyright notice and this permission notice shall be included
+ * in all copies or substantial portions of the Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+ * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+ * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
+ * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+ * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
+ * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS
+ * IN THE SOFTWARE.
+ */
+
+#include <stdlib.h>
+#include <string.h>
+#include <stdarg.h>
+
+#ifdef	NNG_HAVE_BACKTRACE
+#include <execinfo.h>
+#endif
+
+#include "nng.h"
+
+#include "nng_impl.h"
+
+/*
+ * Panic handling.
+ */
+
+static void
+show_backtrace(void)
+{
+#if NNG_HAVE_BACKTRACE
+	void *frames[50];
+	int nframes;
+	char *lines;
+	int i;
+
+	nframes = backtrace(frames, sizeof (frames) / sizeof (frames[0]));
+	if (nframes > 1) {
+		lines = backtrace_symbols(frames, nframes -1);
+		if (lines == NULL) {
+			return;
+		}
+		for (i = 0; i < nframes; i++) {
+			nni_debug_out(lines[i]);
+		}
+	}
+#endif
+}
+
+/*
+ * nni_panic shows a panic message, a possible stack bracktrace, then aborts
+ * the process/program.  This should only be called when a condition arises
+ * that should not be possible, e.g. a programming assertion failure. It should
+ * not be called in situations such as ENOMEM, as nni_panic is fairly rude
+ * to any application it may be called from within.
+ */
+void
+nni_panic(const char *fmt, ...)
+{
+	char buf[128];
+	char fbuf[128];
+	va_list	va;
+
+	va_start(va, fmt);
+	(void) nni_snprintf(fbuf, sizeof (buf), "panic: %s", fmt);
+	(void) nni_vsnprintf(buf, sizeof (buf), fbuf, va);
+	va_end(va);
+
+	nni_debug_out(buf);
+	nni_debug_out("This message is indicative of a BUG.");
+	nni_debug_out("Report this at http://github.com/nanomsg/nanomsg");
+
+	show_backtrace();
+	nni_abort();
+}