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
#include
#include
#include

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] << '\n';
}
os.flush();
::free(strings);
}
}