远程调试leveldb

0）安装snappy

#apt install -y gdb ubuntu-snappy

yum install -y gdb snappy

1）修改编译

修改编译配置Makefile第五行

OPT ?= -O0 -gdwarf-2 -g3

2）调试代码

参考https://blog.csdn.net/a1165741556/article/details/104028855

g++ demo.cpp -o demo out-static/libleveldb.a -lpthread -g -I./include -lsnappy

#include <cassert>
#include <iostream>
#include <string>
#include <leveldb/db.h>

int main()
{
  leveldb::DB* db;
  leveldb::Options options;
  options.create_if_missing = true;
  leveldb::Status status = leveldb::DB::Open(options, "/tmp/testdb", &db);
  assert(status.ok());

  std::string key = "test_key";
  std::string value = "test_value";
  std::string get;

  leveldb::Status s = db->Put(leveldb::WriteOptions(), key, value);

  if (s.ok())
        s = db->Get(leveldb::ReadOptions(), key, &get);
  if (s.ok())
        std::cout << "key=" << key << "\nvalue=" << get  << std::endl;
  else
        std::cout << "failed to find the key!" << std::endl;

  delete db;

  return 0;
}

gdb --args ./demo

3）远程调试

gdbserver :1234 ./demo

配置映射

 

 配置对应关系

 

 mapping