backtrace example using libunwind

example/v2/Jamfile.v2

@@ -61,3 +61,8 @@ exe throw
 exe echosse
     : echosse.cpp
     ;
+
+#exe backtrace
+#    : backtrace.cpp
+#    : <linkflags>"-lunwind"
+#    ;

example/v2/backtrace.cpp

@@ -0,0 +1,58 @@
+
+//          Copyright Oliver Kowalke 2014.
+// Distributed under the Boost Software License, Version 1.0.
+//    (See accompanying file LICENSE_1_0.txt or copy at
+//          http://www.boost.org/LICENSE_1_0.txt)
+
+#define UNW_LOCAL_ONLY
+
+#include <cstdlib>
+#include <iostream>
+
+#include <libunwind.h>
+
+#include <boost/context/all.hpp>
+
+namespace ctx = boost::context;
+
+void backtrace() {
+	unw_cursor_t cursor;
+	unw_context_t context;
+	unw_getcontext( & context);
+	unw_init_local( & cursor, & context);
+	while ( 0 < unw_step( & cursor) ) {
+		unw_word_t offset, pc;
+		unw_get_reg( & cursor, UNW_REG_IP, & pc);
+		if ( 0 == pc) {
+			break;
+		}
+		std::cout << "0x" << pc << ":";
+
+		char sym[256];
+		if ( 0 == unw_get_proc_name( & cursor, sym, sizeof( sym), & offset) ) {
+			std::cout << " (" << sym << "+0x" << offset << ")" << std::endl;
+		} else {
+			std::cout << " -- error: unable to obtain symbol name for this frame" << std::endl;
+		}
+	}
+}
+
+void bar() {
+	backtrace();
+}
+
+void foo() {
+	bar();
+}
+
+ctx::execution_context< void > f1( ctx::execution_context< void > && ctxm) {
+    foo();
+    return std::move( ctxm);
+}
+
+int main() {
+    ctx::execution_context< void > ctx1( f1);
+    ctx1 = ctx1();
+    std::cout << "main: done" << std::endl;
+    return EXIT_SUCCESS;
+}