Linux中打印函数堆栈

Linux中打印函数堆栈mongo源码目录下的util/stacktrace.cpp文件:// Copyright 2009. 10gen, Inc.
#include "mongo/util/stacktrace.h"#include <cstdlib>
#include <iostream>
#include <string>
#include <map>
#include <vector>
#include <execinfo.h>namespace mongo {
static const int maxBackTraceFrames = 20; void printStackTrace（std::ostream& os） {
void *b[maxBackTraceFrames]; int size = ::backtrace（b, maxBackTraceFrames）;
for （int i = 0; i < size; ++i） {
os << std::hex << b[i] << std::dec << " ";
}
os << std::endl; char** strings;
strings = ::backtrace_symbols（b, size）;
for （int i = 0; i < size; ++i） {
os << " " << strings[i] << " ";
}
os.flush（）;
::free（strings）;
}
}