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/* -*- Mode:C++; c-file-style:"gnu"; indent-tabs-mode:nil; -*- */
/**
* Copyright (C) 2014 Named Data Networking Project
* See COPYING for copyright and distribution information.
*/
#ifndef NFD_TEST_CORE_LIMITED_IO_HPP
#define NFD_TEST_CORE_LIMITED_IO_HPP
#include "core/scheduler.hpp"
namespace nfd {
namespace tests {
/** \brief provides IO operations limit and/or time limit for unit testing
*/
class LimitedIo
{
public:
LimitedIo();
/// indicates why .run returns
enum StopReason
{
/// g_io.run() runs normally because there's no work to do
NO_WORK,
/// .afterOp() has been invoked nOpsLimit times
EXCEED_OPS,
/// nTimeLimit has elapsed
EXCEED_TIME,
/// an exception is thrown
EXCEPTION
};
/** \brief g_io.run() with operation count and/or time limit
*
* \param nOpsLimit operation count limit, pass UNLIMITED_OPS for no limit
* \param nTimeLimit time limit, pass UNLIMITED_TIME for no limit
*/
StopReason
run(int nOpsLimit, const time::nanoseconds& nTimeLimit);
/// count an operation
void
afterOp();
const std::exception&
getLastException() const;
private:
void
afterTimeout();
public:
static const int UNLIMITED_OPS;
static const time::nanoseconds UNLIMITED_TIME;
private:
bool m_isRunning;
int m_nOpsRemaining;
EventId m_timeout;
StopReason m_reason;
std::exception m_lastException;
};
} // namespace tests
} // namespace nfd
#endif // NFD_TEST_CORE_LIMITED_IO_HPP