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/**
* @file demo_plugin.cpp
* @brief Test plugin to be loaded by the llplugin testbed.
*
* $LicenseInfo:firstyear=2008&license=viewergpl$
*
* Copyright (c) 2008-2009, Linden Research, Inc.
*
* Second Life Viewer Source Code
* The source code in this file ("Source Code") is provided by Linden Lab
* to you under the terms of the GNU General Public License, version 2.0
* ("GPL"), unless you have obtained a separate licensing agreement
* ("Other License"), formally executed by you and Linden Lab. Terms of
* the GPL can be found in doc/GPL-license.txt in this distribution, or
* online at http://secondlifegrid.net/programs/open_source/licensing/gplv2
*
* There are special exceptions to the terms and conditions of the GPL as
* it is applied to this Source Code. View the full text of the exception
* in the file doc/FLOSS-exception.txt in this software distribution, or
* online at
* http://secondlifegrid.net/programs/open_source/licensing/flossexception
*
* By copying, modifying or distributing this software, you acknowledge
* that you have read and understood your obligations described above,
* and agree to abide by those obligations.
*
* ALL LINDEN LAB SOURCE CODE IS PROVIDED "AS IS." LINDEN LAB MAKES NO
* WARRANTIES, EXPRESS, IMPLIED OR OTHERWISE, REGARDING ITS ACCURACY,
* COMPLETENESS OR PERFORMANCE.
* $/LicenseInfo$
*/
#include "linden_common.h"
#ifdef WIN32
# define WIN32_LEAN_AND_MEAN
# include <winsock2.h>
#include <windows.h>
#endif
#include "llplugininstance.h"
#include "llpluginmessage.h"
#include "llpluginmessageclasses.h"
// TODO: Make sure that the only symbol exported from this library is LLPluginInitEntryPoint
class DemoPlugin
{
public:
static int init(LLPluginInstance::sendMessageFunction host_send_func, void *host_user_data, LLPluginInstance::sendMessageFunction *plugin_send_func, void **plugin_user_data);
private:
DemoPlugin(LLPluginInstance::sendMessageFunction host_send_func, void *host_user_data);
~DemoPlugin();
static void staticReceiveMessage(const char *message_string, void **user_data);
void receiveMessage(const char *message_string);
void sendMessage(const LLPluginMessage &message);
LLPluginInstance::sendMessageFunction mHostSendFunction;
void *mHostUserData;
bool mDeleteMe;
int mSharedSegmentFillValue;
void *mSharedSegmentBase;
size_t mSharedSegmentSize;
};
int DemoPlugin::init(LLPluginInstance::sendMessageFunction host_send_func, void *host_user_data, LLPluginInstance::sendMessageFunction *plugin_send_func, void **plugin_user_data)
{
DemoPlugin *self = new DemoPlugin(host_send_func, host_user_data);
*plugin_send_func = staticReceiveMessage;
*plugin_user_data = (void*)self;
return 0;
}
DemoPlugin::DemoPlugin(LLPluginInstance::sendMessageFunction host_send_func, void *host_user_data)
{
std::cerr << "DemoPlugin constructor" << std::endl;
mHostSendFunction = host_send_func;
mHostUserData = host_user_data;
mDeleteMe = false;
mSharedSegmentBase = NULL;
mSharedSegmentSize = 0;
mSharedSegmentFillValue = 0;
}
DemoPlugin::~DemoPlugin()
{
std::cerr << "DemoPlugin destructor" << std::endl;
}
void DemoPlugin::staticReceiveMessage(const char *message_string, void **user_data)
{
DemoPlugin *self = (DemoPlugin*)*user_data;
if(self != NULL)
{
self->receiveMessage(message_string);
// If the plugin has processed the delete message, delete it.
if(self->mDeleteMe)
{
delete self;
*user_data = NULL;
}
}
}
void DemoPlugin::receiveMessage(const char *message_string)
{
// std::cerr << "DemoPlugin::receiveMessage: received message: \"" << message_string << "\"" << std::endl;
LLPluginMessage message_in;
if(message_in.parse(message_string) >= 0)
{
std::string message_class = message_in.getClass();
std::string message_name = message_in.getName();
if(message_class == "base")
{
if(message_name == "init")
{
LLPluginMessage message("base", "init_response");
LLSD versions = LLSD::emptyMap();
versions[LLPLUGIN_MESSAGE_CLASS_BASE] = LLPLUGIN_MESSAGE_CLASS_BASE_VERSION;
versions[LLPLUGIN_MESSAGE_CLASS_MEDIA] = LLPLUGIN_MESSAGE_CLASS_MEDIA_VERSION;
message.setValueLLSD("versions", versions);
sendMessage(message);
}
else if(message_name == "idle")
{
// no response is necessary here.
// std::cerr << "DemoPlugin::receiveMessage: idle processing" << std::endl;
if(mSharedSegmentBase != NULL)
{
// Fill the shared memory segment
memset(mSharedSegmentBase, mSharedSegmentFillValue, mSharedSegmentSize);
// and increment the fill value
mSharedSegmentFillValue++;
}
}
else if(message_name == "shutdown")
{
sendMessage(LLPluginMessage("base", "shutdown_response"));
mDeleteMe = true;
}
else if(message_name == "shm_added")
{
// Normally, we would check the name and match it up with something from another message.
// For this test, just fill any segment that comes in.
mSharedSegmentSize = (size_t)message_in.getValueS32("size");
mSharedSegmentBase = (void*)message_in.getValueU32("address");
std::cerr << "DemoPlugin::receiveMessage: shared memory added, name: " << message_in.getValue("name")
<< ", size: " << mSharedSegmentSize
<< ", address: " << mSharedSegmentBase
<< std::endl;
memset(mSharedSegmentBase, mSharedSegmentFillValue, mSharedSegmentSize);
}
else if(message_name == "shm_remove")
{
std::cerr << "DemoPlugin::receiveMessage: shared memory remove" << std::endl;
// Normally, we would check the name and match it up with something from another message.
// For this test, just stop filling the only segment we track.
mSharedSegmentBase = NULL;
// Send the response so it can be cleaned up.
LLPluginMessage message("base", "shm_remove_response");
message.setValue("name", message_in.getValue("name"));
sendMessage(message);
}
else
{
std::cerr << "DemoPlugin::receiveMessage: unknown base message: " << message_name << std::endl;
}
}
else
{
std::cerr << "DemoPlugin::receiveMessage: unknown message class: " << message_class << std::endl;
}
}
}
void DemoPlugin::sendMessage(const LLPluginMessage &message)
{
std::string output = message.generate();
mHostSendFunction(output.c_str(), &mHostUserData);
}
extern "C"
{
#ifdef WIN32
__declspec(dllexport)
#endif
int LLPluginInitEntryPoint(LLPluginInstance::sendMessageFunction host_send_func, void *host_user_data, LLPluginInstance::sendMessageFunction *plugin_send_func, void **plugin_user_data);
}
int
#ifdef WIN32
__declspec(dllexport)
#endif
LLPluginInitEntryPoint(LLPluginInstance::sendMessageFunction host_send_func, void *host_user_data, LLPluginInstance::sendMessageFunction *plugin_send_func, void **plugin_user_data)
{
return DemoPlugin::init(host_send_func, host_user_data, plugin_send_func, plugin_user_data);
}
#ifdef WIN32
int WINAPI DllEntryPoint( HINSTANCE hInstance, unsigned long reason, void* params )
{
return 1;
}
#endif
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