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//
// $Id$
//
//
// Original author: Darren Kessner <darren@proteowizard.org>
//
// Copyright 2008 Spielberg Family Center for Applied Proteomics
// Cedars Sinai Medical Center, Los Angeles, California 90048
//
// Licensed under the Apache License, Version 2.0 (the "License");
// you may not use this file except in compliance with the License.
// You may obtain a copy of the License at
//
// http://www.apache.org/licenses/LICENSE-2.0
//
// Unless required by applicable law or agreed to in writing, software
// distributed under the License is distributed on an "AS IS" BASIS,
// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
// See the License for the specific language governing permissions and
// limitations under the License.
//
#define PWIZ_SOURCE
#include "Std.hpp"
#include "IterationListener.hpp"
#include <ctime>
namespace pwiz {
namespace util {
//
// IterationListenerRegistry::Impl
//
class IterationListenerRegistry::Impl
{
public:
void addListener(const IterationListenerPtr& listener, size_t iterationPeriod)
{
listeners_[listener] = iterationPeriod;
}
void addListenerWithTimer(const IterationListenerPtr& listener, double timePeriod)
{
listeners_[listener] = CallbackInfo(timePeriod, true);
}
void removeListener(const IterationListenerPtr& listener)
{
listeners_.erase(listener);
}
IterationListener::Status broadcastUpdateMessage(
const IterationListener::UpdateMessage& updateMessage) const
{
IterationListener::Status result = IterationListener::Status_Ok;
for (Listeners::const_iterator itr = listeners_.begin(); itr != listeners_.end(); ++itr)
{
time_t now;
time(&now);
const IterationListenerPtr& listener = itr->first;
const CallbackInfo& callbackInfo = itr->second;
CallbackInfo::PeriodType periodType = callbackInfo.periodType;
bool shouldUpdate =
updateMessage.iterationIndex == 0 || // always update on iteration 0
((updateMessage.iterationIndex > callbackInfo.lastIterationIndex || // only update in PeriodType_Iteration mode if the iteration has incremented or the message has changed
&updateMessage.message != callbackInfo.lastMessage) &&
((updateMessage.iterationCount > 0 && updateMessage.iterationIndex+1 >= updateMessage.iterationCount) ||
(periodType == CallbackInfo::PeriodType_Iteration && (updateMessage.iterationIndex+1) % callbackInfo.iterationPeriod == 0))) ||
(periodType == CallbackInfo::PeriodType_Time && difftime(now, callbackInfo.timestamp) >= callbackInfo.timePeriod);
if (shouldUpdate)
{
IterationListener::Status status = listener->update(updateMessage);
if (status == IterationListener::Status_Cancel) result = status;
if (periodType == CallbackInfo::PeriodType_Time)
callbackInfo.timestamp = now;
else
callbackInfo.lastIterationIndex = updateMessage.iterationIndex;
callbackInfo.lastMessage = &updateMessage.message;
}
}
return result;
}
private:
struct CallbackInfo
{
enum PeriodType {PeriodType_Iteration, PeriodType_Time};
PeriodType periodType;
size_t iterationPeriod;
double timePeriod; // seconds
mutable time_t timestamp;
mutable size_t lastIterationIndex;
mutable const string* lastMessage; // never dereference this, only compare pointer values
CallbackInfo(size_t _iterationPeriod = 1)
: periodType(PeriodType_Iteration),
iterationPeriod(_iterationPeriod),
timePeriod(0),
lastIterationIndex(0),
lastMessage(NULL)
{}
CallbackInfo(double _timePeriod, bool mustBeTrue)
: periodType(PeriodType_Time),
iterationPeriod(0),
timePeriod(_timePeriod),
lastIterationIndex(0),
lastMessage(NULL)
{
if (mustBeTrue != true)
throw runtime_error("[IterationListenerRegistry::CallbackInfo] Wrong constructor.");
}
};
typedef map<IterationListenerPtr, CallbackInfo> Listeners;
mutable Listeners listeners_;
};
PWIZ_API_DECL std::string IterationListener::no_message;
//
// IterationListenerRegistry
//
PWIZ_API_DECL IterationListenerRegistry::IterationListenerRegistry()
: impl_(new Impl)
{}
PWIZ_API_DECL
void IterationListenerRegistry::addListener(const IterationListenerPtr& listener,
size_t iterationPeriod)
{
impl_->addListener(listener, iterationPeriod);
}
PWIZ_API_DECL
void IterationListenerRegistry::addListenerWithTimer(const IterationListenerPtr& listener,
double timePeriod)
{
impl_->addListenerWithTimer(listener, timePeriod);
}
PWIZ_API_DECL void IterationListenerRegistry::removeListener(const IterationListenerPtr& listener)
{
impl_->removeListener(listener);
}
PWIZ_API_DECL IterationListener::Status
IterationListenerRegistry::broadcastUpdateMessage(
const IterationListener::UpdateMessage& updateMessage) const
{
return impl_->broadcastUpdateMessage(updateMessage);
}
} // namespace util
} // namespace pwiz
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