58 lines
1.2 KiB
C
58 lines
1.2 KiB
C
|
/*
|
||
|
|
* Copyright (c) 2011 by Bjoern Kolbeck, Zuse Institute Berlin
|
||
|
|
*
|
||
|
|
* Licensed under the BSD License, see LICENSE file for details.
|
||
|
|
*
|
||
|
|
*/
|
||
|
|
|
||
|
|
#ifndef CPP_INCLUDE_UTIL_ERROR_LOG_H_
|
||
|
|
#define CPP_INCLUDE_UTIL_ERROR_LOG_H_
|
||
|
|
|
||
|
|
#include "boost/thread.hpp"
|
||
|
|
#include <list>
|
||
|
|
#include <string>
|
||
|
|
|
||
|
|
namespace xtreemfs {
|
||
|
|
namespace util {
|
||
|
|
|
||
|
|
/**
|
||
|
|
* A simple class that stores the last max_entries
|
||
|
|
* error messages. Thread safe.
|
||
|
|
*/
|
||
|
|
class ErrorLog {
|
||
|
|
public:
|
||
|
|
static ErrorLog* error_log;
|
||
|
|
|
||
|
|
ErrorLog(int max_entries) : max_entries_(max_entries) {}
|
||
|
|
~ErrorLog() {}
|
||
|
|
|
||
|
|
void AppendError(const std::string& message) {
|
||
|
|
boost::mutex::scoped_lock lock(error_messages_mutex_);
|
||
|
|
if (error_messages_.size() == max_entries_) {
|
||
|
|
error_messages_.pop_front();
|
||
|
|
}
|
||
|
|
error_messages_.push_back(message);
|
||
|
|
}
|
||
|
|
|
||
|
|
std::list<std::string> error_messages() {
|
||
|
|
boost::mutex::scoped_lock lock(error_messages_mutex_);
|
||
|
|
return error_messages_;
|
||
|
|
}
|
||
|
|
|
||
|
|
private:
|
||
|
|
int max_entries_;
|
||
|
|
boost::mutex error_messages_mutex_;
|
||
|
|
std::list<std::string> error_messages_;
|
||
|
|
};
|
||
|
|
|
||
|
|
void initialize_error_log(int max_entries);
|
||
|
|
|
||
|
|
void shutdown_error_log();
|
||
|
|
|
||
|
|
} // namespace util
|
||
|
|
} // namespace xtreemfs
|
||
|
|
|
||
|
|
|
||
|
|
#endif // CPP_INCLUDE_UTIL_ERROR_LOG_H_
|
||
|
|
|