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/**
* @file llrun.cpp
* @author Phoenix
* @date 2006-02-16
* @brief Implementation of the LLRunner and related classes
*
* $LicenseInfo:firstyear=2006&license=viewerlgpl$
* Second Life Viewer Source Code
* Copyright (C) 2010, Linden Research, Inc.
*
* This library is free software; you can redistribute it and/or
* modify it under the terms of the GNU Lesser General Public
* License as published by the Free Software Foundation;
* version 2.1 of the License only.
*
* This library is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public
* License along with this library; if not, write to the Free Software
* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
*
* Linden Research, Inc., 945 Battery Street, San Francisco, CA 94111 USA
* $/LicenseInfo$
*/
#include "linden_common.h"
#include "llrun.h"
#include "llframetimer.h"
static const LLRunner::run_handle_t INVALID_RUN_HANDLE = 0;
/**
* LLRunner
*/
LLRunner::LLRunner() :
mNextHandle(1)
{
}
LLRunner::~LLRunner()
{
mRunOnce.clear();
mRunEvery.clear();
}
size_t LLRunner::run()
{
// We collect all of the runnables which should be run. Since the
// runnables are allowed to adjust the run list, we need to copy
// them into a temporary structure which then iterates over them
// to call out of this method into the runnables.
F64 now = LLFrameTimer::getTotalSeconds();
run_list_t run_now;
// Collect the run once. We erase the matching ones now because
// it's easier. If we find a reason to keep them around for a
// while, we can restructure this method.
LLRunner::run_list_t::iterator iter = mRunOnce.begin();
for( ; iter != mRunOnce.end(); )
{
if(now > (*iter).mNextRunAt)
{
run_now.push_back(*iter);
iter = mRunOnce.erase(iter);
}
else
{
++iter;
}
}
// Collect the ones that repeat.
iter = mRunEvery.begin();
LLRunner::run_list_t::iterator end = mRunEvery.end();
for( ; iter != end; ++iter )
{
if(now > (*iter).mNextRunAt)
{
(*iter).mNextRunAt = now + (*iter).mIncrement;
run_now.push_back(*iter);
}
}
// Now, run them.
iter = run_now.begin();
end = run_now.end();
for( ; iter != end; ++iter )
{
(*iter).mRunnable->run(this, (*iter).mHandle);
}
return run_now.size();
}
LLRunner::run_handle_t LLRunner::addRunnable(
run_ptr_t runnable,
ERunSchedule schedule,
F64 seconds)
{
if(!runnable) return INVALID_RUN_HANDLE;
run_handle_t handle = mNextHandle++;
F64 next_run = LLFrameTimer::getTotalSeconds() + seconds;
LLRunInfo info(handle, runnable, schedule, next_run, seconds);
switch(schedule)
{
case RUN_IN:
// We could optimize this a bit by sorting this on entry.
mRunOnce.push_back(info);
break;
case RUN_EVERY:
mRunEvery.push_back(info);
break;
default:
handle = INVALID_RUN_HANDLE;
break;
}
return handle;
}
LLRunner::run_ptr_t LLRunner::removeRunnable(LLRunner::run_handle_t handle)
{
LLRunner::run_ptr_t rv;
LLRunner::run_list_t::iterator iter = mRunOnce.begin();
LLRunner::run_list_t::iterator end = mRunOnce.end();
for( ; iter != end; ++iter)
{
if((*iter).mHandle == handle)
{
rv = (*iter).mRunnable;
mRunOnce.erase(iter);
return rv;
}
}
iter = mRunEvery.begin();
end = mRunEvery.end();
for( ; iter != end; ++iter)
{
if((*iter).mHandle == handle)
{
rv = (*iter).mRunnable;
mRunEvery.erase(iter);
return rv;
}
}
return rv;
}
/**
* LLRunner::LLRunInfo
*/
LLRunner::LLRunInfo::LLRunInfo(
run_handle_t handle,
run_ptr_t runnable,
ERunSchedule schedule,
F64 next_run_after,
F64 increment) :
mHandle(handle),
mRunnable(runnable),
mSchedule(schedule),
mNextRunAt(next_run_after),
mIncrement(increment)
{
}
LLRunnable::LLRunnable()
{ }
// virtual
LLRunnable::~LLRunnable()
{ }
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