69 lines
2.4 KiB
C++
69 lines
2.4 KiB
C++
/**
|
|
* @file llheartbeat.h
|
|
* @brief Class encapsulating logic for telling a watchdog that we live.
|
|
*
|
|
* $LicenseInfo:firstyear=2008&license=viewerlgpl$
|
|
* 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
|
|
* $/LicenseInfo$
|
|
*/
|
|
|
|
#ifndef LL_LLHEARTBEAT_H
|
|
#define LL_LLHEARTBEAT_H
|
|
|
|
#include "linden_common.h"
|
|
|
|
#include "lltimer.h"
|
|
|
|
// Note: Win32 does not support the heartbeat/smackdown system;
|
|
// heartbeat-delivery turns into a no-op there.
|
|
|
|
class LL_COMMON_API LLHeartbeat
|
|
{
|
|
public:
|
|
// secs_between_heartbeat: after a heartbeat is successfully delivered,
|
|
// we suppress sending more for this length of time.
|
|
// aggressive_heartbeat_panic_secs: if we've been failing to
|
|
// successfully deliver heartbeats for this length of time then
|
|
// we block for a while until we're really sure we got one delivered.
|
|
// aggressive_heartbeat_max_blocking_secs: this is the length of
|
|
// time we block for when we're aggressively ensuring that a 'panic'
|
|
// heartbeat was delivered.
|
|
LLHeartbeat(F32 secs_between_heartbeat = 5.0f,
|
|
F32 aggressive_heartbeat_panic_secs = 10.0f,
|
|
F32 aggressive_heartbeat_max_blocking_secs = 4.0f);
|
|
~LLHeartbeat();
|
|
|
|
bool send(F32 timeout_sec = 0.0f);
|
|
void setSuppressed(bool is_suppressed);
|
|
|
|
private:
|
|
int rawSend();
|
|
int rawSendWithTimeout(F32 timeout_sec);
|
|
F32 mSecsBetweenHeartbeat;
|
|
F32 mAggressiveHeartbeatPanicSecs;
|
|
F32 mAggressiveHeartbeatMaxBlockingSecs;
|
|
bool mSuppressed;
|
|
LLTimer mBeatTimer;
|
|
LLTimer mPanicTimer;
|
|
LLTimer mTimeoutTimer;
|
|
};
|
|
|
|
#endif // LL_HEARTBEAT_H
|