58 lines
1.2 KiB
C++
58 lines
1.2 KiB
C++
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// Copyright Oliver Kowalke 2016.
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// Distributed under the Boost Software License, Version 1.0.
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// (See accompanying file LICENSE_1_0.txt or copy at
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// http://www.boost.org/LICENSE_1_0.txt)
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#define UNW_LOCAL_ONLY
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#include <cstdlib>
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#include <iostream>
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#include <libunwind.h>
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#include <boost/context/fiber.hpp>
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namespace ctx = boost::context;
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void backtrace() {
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unw_cursor_t cursor;
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unw_context_t context;
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unw_getcontext( & context);
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unw_init_local( & cursor, & context);
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while ( 0 < unw_step( & cursor) ) {
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unw_word_t offset, pc;
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unw_get_reg( & cursor, UNW_REG_IP, & pc);
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if ( 0 == pc) {
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break;
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}
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std::cout << "0x" << pc << ":";
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char sym[256];
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if ( 0 == unw_get_proc_name( & cursor, sym, sizeof( sym), & offset) ) {
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std::cout << " (" << sym << "+0x" << offset << ")" << std::endl;
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} else {
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std::cout << " -- error: unable to obtain symbol name for this frame" << std::endl;
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}
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}
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}
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void bar() {
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backtrace();
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}
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void foo() {
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bar();
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}
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ctx::fiber f1( ctx::fiber && c) {
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foo();
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return std::move( c);
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}
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int main() {
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ctx::fiber{ f1 }.resume();
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std::cout << "main: done" << std::endl;
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return EXIT_SUCCESS;
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}
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