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// **********************************************************************
//
// Copyright (c) 2003-present ZeroC, Inc. All rights reserved.
//
// This copy of Ice is licensed to you under the terms described in the
// ICE_LICENSE file included in this distribution.
//
// **********************************************************************
#include "ice.h"
#include "Future.h"
#include "Util.h"
using namespace std;
using namespace IceMatlab;
void
IceMatlab::Future::token(function<void()> t)
{
lock_guard<mutex> lock(_mutex);
if(stateImpl() != State::Finished)
{
_token = std::move(t);
}
}
bool
IceMatlab::Future::waitForState(State state, double timeout)
{
unique_lock<mutex> lock(_mutex);
if(timeout < 0)
{
_cond.wait(lock, [this, state]{ return state == this->stateImpl(); });
return !_exception;
}
else
{
auto now = chrono::system_clock::now();
auto stop = now + chrono::milliseconds(static_cast<long long>(timeout * 1000));
bool b = _cond.wait_until(lock, stop, [this, state]{ return state == this->stateImpl(); });
return b && !_exception;
}
}
bool
IceMatlab::Future::waitForState(const string& s, double timeout)
{
State state;
if(s == "running")
{
state = State::Running;
}
else if(s == "sent")
{
state = State::Sent;
}
else if(s == "finished")
{
state = State::Finished;
}
else
{
throw std::invalid_argument("state must be one of 'running', 'sent' or 'finished'");
}
return waitForState(state, timeout);
}
void
IceMatlab::Future::exception(exception_ptr e)
{
lock_guard<mutex> lock(_mutex);
_token = nullptr;
_exception = e;
_cond.notify_all();
}
exception_ptr
IceMatlab::Future::getException() const
{
lock_guard<mutex> lock(const_cast<mutex&>(_mutex));
return _exception;
}
void
IceMatlab::Future::sent()
{
}
string
IceMatlab::Future::state() const
{
lock_guard<mutex> lock(const_cast<mutex&>(_mutex));
string st;
switch(stateImpl())
{
case State::Running:
st = "running";
break;
case State::Sent:
st = "sent";
break;
case State::Finished:
st = "finished";
break;
}
return st;
}
void
IceMatlab::Future::cancel()
{
lock_guard<mutex> lock(_mutex);
if(_token)
{
_token();
_token = nullptr;
}
}
//
// SimpleFuture
//
IceMatlab::SimpleFuture::SimpleFuture() :
_state(State::Running)
{
}
void
IceMatlab::SimpleFuture::done()
{
lock_guard<mutex> lock(_mutex);
_state = State::Finished;
_cond.notify_all();
}
IceMatlab::Future::State
IceMatlab::SimpleFuture::stateImpl() const
{
if(_exception)
{
return State::Finished;
}
else
{
return _state;
}
}
extern "C"
{
mxArray*
Ice_SimpleFuture_unref(void* self)
{
delete reinterpret_cast<shared_ptr<SimpleFuture>*>(self);
return 0;
}
mxArray*
Ice_SimpleFuture_wait(void* self)
{
bool b = deref<SimpleFuture>(self)->waitForState("finished", -1);
return createResultValue(createBool(b));
}
mxArray*
Ice_SimpleFuture_waitState(void* self, mxArray* st, double timeout)
{
try
{
string s = getStringFromUTF16(st);
bool b = deref<SimpleFuture>(self)->waitForState(s, timeout);
return createResultValue(createBool(b));
}
catch(const std::exception& ex)
{
return createResultException(convertException(ex));
}
}
mxArray*
Ice_SimpleFuture_state(void* self)
{
return createResultValue(createStringFromUTF8(deref<SimpleFuture>(self)->state()));
}
mxArray*
Ice_SimpleFuture_cancel(void* self)
{
deref<SimpleFuture>(self)->cancel();
return 0;
}
mxArray*
Ice_SimpleFuture_check(void* self)
{
auto f = deref<SimpleFuture>(self);
if(!f->waitForState(Future::State::Finished, -1))
{
assert(f->getException());
try
{
rethrow_exception(f->getException());
}
catch(const std::exception& ex)
{
//
// The C++ object won't be used after this.
//
delete reinterpret_cast<shared_ptr<SimpleFuture>*>(self);
return convertException(ex);
}
}
//
// The C++ object won't be used after this.
//
delete reinterpret_cast<shared_ptr<SimpleFuture>*>(self);
return 0;
}
}
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