diff options
Diffstat (limited to 'indra/llplugin/llpluginprocesschild.cpp')
| -rw-r--r-- | indra/llplugin/llpluginprocesschild.cpp | 962 |
1 files changed, 481 insertions, 481 deletions
diff --git a/indra/llplugin/llpluginprocesschild.cpp b/indra/llplugin/llpluginprocesschild.cpp index d93ec8cf4b..a854ced7aa 100644 --- a/indra/llplugin/llpluginprocesschild.cpp +++ b/indra/llplugin/llpluginprocesschild.cpp @@ -39,192 +39,192 @@ static const F32 PLUGIN_IDLE_SECONDS = 1.0f / 100.0f; // Each call to idle will LLPluginProcessChild::LLPluginProcessChild() { - mState = STATE_UNINITIALIZED; - mInstance = NULL; - mSocket = LLSocket::create(gAPRPoolp, LLSocket::STREAM_TCP); - mSleepTime = PLUGIN_IDLE_SECONDS; // default: send idle messages at 100Hz - mCPUElapsed = 0.0f; - mBlockingRequest = false; - mBlockingResponseReceived = false; + mState = STATE_UNINITIALIZED; + mInstance = NULL; + mSocket = LLSocket::create(gAPRPoolp, LLSocket::STREAM_TCP); + mSleepTime = PLUGIN_IDLE_SECONDS; // default: send idle messages at 100Hz + mCPUElapsed = 0.0f; + mBlockingRequest = false; + mBlockingResponseReceived = false; } LLPluginProcessChild::~LLPluginProcessChild() { - if (mInstance != NULL) - { - sendMessageToPlugin(LLPluginMessage("base", "cleanup")); - - // IMPORTANT: under some (unknown) circumstances the apr_dso_unload() triggered when mInstance is deleted - // appears to fail and lock up which means that a given instance of the slplugin process never exits. - // This is bad, especially when users try to update their version of SL - it fails because the slplugin - // process as well as a bunch of plugin specific files are locked and cannot be overwritten. - exit(0); - //delete mInstance; - //mInstance = NULL; - } + if (mInstance != NULL) + { + sendMessageToPlugin(LLPluginMessage("base", "cleanup")); + + // IMPORTANT: under some (unknown) circumstances the apr_dso_unload() triggered when mInstance is deleted + // appears to fail and lock up which means that a given instance of the slplugin process never exits. + // This is bad, especially when users try to update their version of SL - it fails because the slplugin + // process as well as a bunch of plugin specific files are locked and cannot be overwritten. + exit(0); + //delete mInstance; + //mInstance = NULL; + } } void LLPluginProcessChild::killSockets(void) { - killMessagePipe(); - mSocket.reset(); + killMessagePipe(); + mSocket.reset(); } void LLPluginProcessChild::init(U32 launcher_port) { - mLauncherHost = LLHost("127.0.0.1", launcher_port); - setState(STATE_INITIALIZED); + mLauncherHost = LLHost("127.0.0.1", launcher_port); + setState(STATE_INITIALIZED); } void LLPluginProcessChild::idle(void) { - bool idle_again; - do - { - if (mState < STATE_SHUTDOWNREQ) - { // Once we have hit the shutdown request state checking for errors might put us in a spurious - // error state... don't do that. - - if (APR_STATUS_IS_EOF(mSocketError)) - { - // Plugin socket was closed. This covers both normal plugin termination and host crashes. - setState(STATE_ERROR); - } - else if (mSocketError != APR_SUCCESS) - { - LL_INFOS("Plugin") << "message pipe is in error state (" << mSocketError << "), moving to STATE_ERROR" << LL_ENDL; - setState(STATE_ERROR); - } - - if ((mState > STATE_INITIALIZED) && (mMessagePipe == NULL)) - { - // The pipe has been closed -- we're done. - // TODO: This could be slightly more subtle, but I'm not sure it needs to be. - LL_INFOS("Plugin") << "message pipe went away, moving to STATE_ERROR" << LL_ENDL; - setState(STATE_ERROR); - } - } - - // If a state needs to go directly to another state (as a performance enhancement), it can set idle_again to true after calling setState(). - // USE THIS CAREFULLY, since it can starve other code. Specifically make sure there's no way to get into a closed cycle and never return. - // When in doubt, don't do it. - idle_again = false; - - if (mInstance != NULL) - { - // Provide some time to the plugin - mInstance->idle(); - } - - switch (mState) - { - case STATE_UNINITIALIZED: - break; - - case STATE_INITIALIZED: - if (mSocket->blockingConnect(mLauncherHost)) - { - // This automatically sets mMessagePipe - new LLPluginMessagePipe(this, mSocket); - - setState(STATE_CONNECTED); - } - else - { - // connect failed - setState(STATE_ERROR); - } - break; - - case STATE_CONNECTED: - sendMessageToParent(LLPluginMessage(LLPLUGIN_MESSAGE_CLASS_INTERNAL, "hello")); - setState(STATE_PLUGIN_LOADING); - break; - - case STATE_PLUGIN_LOADING: - if (!mPluginFile.empty()) - { - mInstance = new LLPluginInstance(this); - if (mInstance->load(mPluginDir, mPluginFile) == 0) - { - mHeartbeat.start(); - mHeartbeat.setTimerExpirySec(HEARTBEAT_SECONDS); - mCPUElapsed = 0.0f; - setState(STATE_PLUGIN_LOADED); - } - else - { - setState(STATE_ERROR); - } - } - break; - - case STATE_PLUGIN_LOADED: - { - setState(STATE_PLUGIN_INITIALIZING); - LLPluginMessage message("base", "init"); - sendMessageToPlugin(message); - } - break; - - case STATE_PLUGIN_INITIALIZING: - // waiting for init_response... - break; - - case STATE_RUNNING: - if (mInstance != NULL) - { - // Provide some time to the plugin - LLPluginMessage message("base", "idle"); - message.setValueReal("time", PLUGIN_IDLE_SECONDS); - sendMessageToPlugin(message); - - mInstance->idle(); - - if (mHeartbeat.hasExpired()) - { - - // This just proves that we're not stuck down inside the plugin code. - LLPluginMessage heartbeat(LLPLUGIN_MESSAGE_CLASS_INTERNAL, "heartbeat"); - - // Calculate the approximage CPU usage fraction (floating point value between 0 and 1) used by the plugin this heartbeat cycle. - // Note that this will not take into account any threads or additional processes the plugin spawns, but it's a first approximation. - // If we could write OS-specific functions to query the actual CPU usage of this process, that would be a better approximation. - heartbeat.setValueReal("cpu_usage", mCPUElapsed / mHeartbeat.getElapsedTimeF64()); - - sendMessageToParent(heartbeat); - - mHeartbeat.reset(); - mHeartbeat.setTimerExpirySec(HEARTBEAT_SECONDS); - mCPUElapsed = 0.0f; - } - } - // receivePluginMessage will transition to STATE_UNLOADING - break; - - case STATE_SHUTDOWNREQ: - // set next state first thing in case "cleanup" message advances state. - setState(STATE_UNLOADING); - mWaitGoodbye.setTimerExpirySec(GOODBYE_SECONDS); - - if (mInstance != NULL) - { - sendMessageToPlugin(LLPluginMessage("base", "cleanup")); - } - break; - - case STATE_UNLOADING: - // waiting for goodbye from plugin. - if (mWaitGoodbye.hasExpired()) - { - LL_WARNS() << "Wait for goodbye expired. Advancing to UNLOADED" << LL_ENDL; - if (mInstance != NULL) - { - // Something went wrong, at least make sure plugin will terminate - sendMessageToPlugin(LLPluginMessage("base", "force_exit")); - } - setState(STATE_UNLOADED); - } + bool idle_again; + do + { + if (mState < STATE_SHUTDOWNREQ) + { // Once we have hit the shutdown request state checking for errors might put us in a spurious + // error state... don't do that. + + if (APR_STATUS_IS_EOF(mSocketError)) + { + // Plugin socket was closed. This covers both normal plugin termination and host crashes. + setState(STATE_ERROR); + } + else if (mSocketError != APR_SUCCESS) + { + LL_INFOS("Plugin") << "message pipe is in error state (" << mSocketError << "), moving to STATE_ERROR" << LL_ENDL; + setState(STATE_ERROR); + } + + if ((mState > STATE_INITIALIZED) && (mMessagePipe == NULL)) + { + // The pipe has been closed -- we're done. + // TODO: This could be slightly more subtle, but I'm not sure it needs to be. + LL_INFOS("Plugin") << "message pipe went away, moving to STATE_ERROR" << LL_ENDL; + setState(STATE_ERROR); + } + } + + // If a state needs to go directly to another state (as a performance enhancement), it can set idle_again to true after calling setState(). + // USE THIS CAREFULLY, since it can starve other code. Specifically make sure there's no way to get into a closed cycle and never return. + // When in doubt, don't do it. + idle_again = false; + + if (mInstance != NULL) + { + // Provide some time to the plugin + mInstance->idle(); + } + + switch (mState) + { + case STATE_UNINITIALIZED: + break; + + case STATE_INITIALIZED: + if (mSocket->blockingConnect(mLauncherHost)) + { + // This automatically sets mMessagePipe + new LLPluginMessagePipe(this, mSocket); + + setState(STATE_CONNECTED); + } + else + { + // connect failed + setState(STATE_ERROR); + } + break; + + case STATE_CONNECTED: + sendMessageToParent(LLPluginMessage(LLPLUGIN_MESSAGE_CLASS_INTERNAL, "hello")); + setState(STATE_PLUGIN_LOADING); + break; + + case STATE_PLUGIN_LOADING: + if (!mPluginFile.empty()) + { + mInstance = new LLPluginInstance(this); + if (mInstance->load(mPluginDir, mPluginFile) == 0) + { + mHeartbeat.start(); + mHeartbeat.setTimerExpirySec(HEARTBEAT_SECONDS); + mCPUElapsed = 0.0f; + setState(STATE_PLUGIN_LOADED); + } + else + { + setState(STATE_ERROR); + } + } + break; + + case STATE_PLUGIN_LOADED: + { + setState(STATE_PLUGIN_INITIALIZING); + LLPluginMessage message("base", "init"); + sendMessageToPlugin(message); + } + break; + + case STATE_PLUGIN_INITIALIZING: + // waiting for init_response... + break; + + case STATE_RUNNING: + if (mInstance != NULL) + { + // Provide some time to the plugin + LLPluginMessage message("base", "idle"); + message.setValueReal("time", PLUGIN_IDLE_SECONDS); + sendMessageToPlugin(message); + + mInstance->idle(); + + if (mHeartbeat.hasExpired()) + { + + // This just proves that we're not stuck down inside the plugin code. + LLPluginMessage heartbeat(LLPLUGIN_MESSAGE_CLASS_INTERNAL, "heartbeat"); + + // Calculate the approximage CPU usage fraction (floating point value between 0 and 1) used by the plugin this heartbeat cycle. + // Note that this will not take into account any threads or additional processes the plugin spawns, but it's a first approximation. + // If we could write OS-specific functions to query the actual CPU usage of this process, that would be a better approximation. + heartbeat.setValueReal("cpu_usage", mCPUElapsed / mHeartbeat.getElapsedTimeF64()); + + sendMessageToParent(heartbeat); + + mHeartbeat.reset(); + mHeartbeat.setTimerExpirySec(HEARTBEAT_SECONDS); + mCPUElapsed = 0.0f; + } + } + // receivePluginMessage will transition to STATE_UNLOADING + break; + + case STATE_SHUTDOWNREQ: + // set next state first thing in case "cleanup" message advances state. + setState(STATE_UNLOADING); + mWaitGoodbye.setTimerExpirySec(GOODBYE_SECONDS); + + if (mInstance != NULL) + { + sendMessageToPlugin(LLPluginMessage("base", "cleanup")); + } + break; + + case STATE_UNLOADING: + // waiting for goodbye from plugin. + if (mWaitGoodbye.hasExpired()) + { + LL_WARNS() << "Wait for goodbye expired. Advancing to UNLOADED" << LL_ENDL; + if (mInstance != NULL) + { + // Something went wrong, at least make sure plugin will terminate + sendMessageToPlugin(LLPluginMessage("base", "force_exit")); + } + setState(STATE_UNLOADED); + } if (mInstance) { @@ -237,370 +237,370 @@ void LLPluginProcessChild::idle(void) mInstance->idle(); } - break; + break; - case STATE_UNLOADED: - killSockets(); - delete mInstance; - mInstance = NULL; - setState(STATE_DONE); - break; + case STATE_UNLOADED: + killSockets(); + delete mInstance; + mInstance = NULL; + setState(STATE_DONE); + break; - case STATE_ERROR: - // Close the socket to the launcher - killSockets(); - // TODO: Where do we go from here? Just exit()? - setState(STATE_DONE); - break; + case STATE_ERROR: + // Close the socket to the launcher + killSockets(); + // TODO: Where do we go from here? Just exit()? + setState(STATE_DONE); + break; - case STATE_DONE: - // just sit here. - break; - } + case STATE_DONE: + // just sit here. + break; + } - } while (idle_again); + } while (idle_again); } void LLPluginProcessChild::sleep(F64 seconds) { - deliverQueuedMessages(); - if (mMessagePipe) - { - mMessagePipe->pump(seconds); - } - else - { + deliverQueuedMessages(); + if (mMessagePipe) + { + mMessagePipe->pump(seconds); + } + else + { ms_sleep((int)(seconds * 1000.0f)); - } + } } void LLPluginProcessChild::pump(void) { - deliverQueuedMessages(); - if (mMessagePipe) - { - mMessagePipe->pump(0.0f); - } - else - { - // Should we warn here? - } + deliverQueuedMessages(); + if (mMessagePipe) + { + mMessagePipe->pump(0.0f); + } + else + { + // Should we warn here? + } } bool LLPluginProcessChild::isRunning(void) { - bool result = false; + bool result = false; - if (mState == STATE_RUNNING) - result = true; + if (mState == STATE_RUNNING) + result = true; - return result; + return result; } bool LLPluginProcessChild::isDone(void) { - bool result = false; - - switch (mState) - { - case STATE_DONE: - result = true; - break; - default: - break; - } - - return result; + bool result = false; + + switch (mState) + { + case STATE_DONE: + result = true; + break; + default: + break; + } + + return result; } void LLPluginProcessChild::sendMessageToPlugin(const LLPluginMessage &message) { - if (mInstance) - { - std::string buffer = message.generate(); + if (mInstance) + { + std::string buffer = message.generate(); - LL_DEBUGS("Plugin") << "Sending to plugin: " << buffer << LL_ENDL; - LLTimer elapsed; + LL_DEBUGS("Plugin") << "Sending to plugin: " << buffer << LL_ENDL; + LLTimer elapsed; - mInstance->sendMessage(buffer); + mInstance->sendMessage(buffer); - mCPUElapsed += elapsed.getElapsedTimeF64(); - } - else - { - LL_WARNS("Plugin") << "mInstance == NULL" << LL_ENDL; - } + mCPUElapsed += elapsed.getElapsedTimeF64(); + } + else + { + LL_WARNS("Plugin") << "mInstance == NULL" << LL_ENDL; + } } void LLPluginProcessChild::sendMessageToParent(const LLPluginMessage &message) { - std::string buffer = message.generate(); + std::string buffer = message.generate(); - LL_DEBUGS("Plugin") << "Sending to parent: " << buffer << LL_ENDL; + LL_DEBUGS("Plugin") << "Sending to parent: " << buffer << LL_ENDL; - writeMessageRaw(buffer); + writeMessageRaw(buffer); } void LLPluginProcessChild::receiveMessageRaw(const std::string &message) { - // Incoming message from the TCP Socket - - LL_DEBUGS("Plugin") << "Received from parent: " << message << LL_ENDL; - - // Decode this message - LLPluginMessage parsed; - parsed.parse(message); - - if (mBlockingRequest) - { - // We're blocking the plugin waiting for a response. - - if (parsed.hasValue("blocking_response")) - { - // This is the message we've been waiting for -- fall through and send it immediately. - mBlockingResponseReceived = true; - } - else - { - // Still waiting. Queue this message and don't process it yet. - mMessageQueue.push(message); - return; - } - } - - bool passMessage = true; - - // FIXME: how should we handle queueing here? - - { - std::string message_class = parsed.getClass(); - if (message_class == LLPLUGIN_MESSAGE_CLASS_INTERNAL) - { - passMessage = false; - - std::string message_name = parsed.getName(); - if (message_name == "load_plugin") - { - mPluginFile = parsed.getValue("file"); - mPluginDir = parsed.getValue("dir"); - } - else if (message_name == "shutdown_plugin") - { - setState(STATE_SHUTDOWNREQ); - } - else if (message_name == "shm_add") - { - std::string name = parsed.getValue("name"); - size_t size = (size_t)parsed.getValueS32("size"); - - sharedMemoryRegionsType::iterator iter = mSharedMemoryRegions.find(name); - if (iter != mSharedMemoryRegions.end()) - { - // Need to remove the old region first - LL_WARNS("Plugin") << "Adding a duplicate shared memory segment!" << LL_ENDL; - } - else - { - // This is a new region - LLPluginSharedMemory *region = new LLPluginSharedMemory; - if (region->attach(name, size)) - { - mSharedMemoryRegions.insert(sharedMemoryRegionsType::value_type(name, region)); - - std::stringstream addr; - addr << region->getMappedAddress(); - - // Send the add notification to the plugin - LLPluginMessage message("base", "shm_added"); - message.setValue("name", name); - message.setValueS32("size", (S32)size); - message.setValuePointer("address", region->getMappedAddress()); - sendMessageToPlugin(message); - - // and send the response to the parent - message.setMessage(LLPLUGIN_MESSAGE_CLASS_INTERNAL, "shm_add_response"); - message.setValue("name", name); - sendMessageToParent(message); - } - else - { - LL_WARNS("Plugin") << "Couldn't create a shared memory segment!" << LL_ENDL; - delete region; - } - } - - } - else if (message_name == "shm_remove") - { - std::string name = parsed.getValue("name"); - sharedMemoryRegionsType::iterator iter = mSharedMemoryRegions.find(name); - if (iter != mSharedMemoryRegions.end()) - { - // forward the remove request to the plugin -- its response will trigger us to detach the segment. - LLPluginMessage message("base", "shm_remove"); - message.setValue("name", name); - sendMessageToPlugin(message); - } - else - { - LL_WARNS("Plugin") << "shm_remove for unknown memory segment!" << LL_ENDL; - } - } - else if (message_name == "sleep_time") - { - mSleepTime = llmax(parsed.getValueReal("time"), 1.0 / 100.0); // clamp to maximum of 100Hz - } - else if (message_name == "crash") - { - // Crash the plugin - LL_ERRS("Plugin") << "Plugin crash requested." << LL_ENDL; - } - else if (message_name == "hang") - { - // Hang the plugin - LL_WARNS("Plugin") << "Plugin hang requested." << LL_ENDL; - while (1) - { - // wheeeeeeeee...... - } - } - else - { - LL_WARNS("Plugin") << "Unknown internal message from parent: " << message_name << LL_ENDL; - } - } - } - - if (passMessage && mInstance != NULL) - { - LLTimer elapsed; - - mInstance->sendMessage(message); - - mCPUElapsed += elapsed.getElapsedTimeF64(); - } + // Incoming message from the TCP Socket + + LL_DEBUGS("Plugin") << "Received from parent: " << message << LL_ENDL; + + // Decode this message + LLPluginMessage parsed; + parsed.parse(message); + + if (mBlockingRequest) + { + // We're blocking the plugin waiting for a response. + + if (parsed.hasValue("blocking_response")) + { + // This is the message we've been waiting for -- fall through and send it immediately. + mBlockingResponseReceived = true; + } + else + { + // Still waiting. Queue this message and don't process it yet. + mMessageQueue.push(message); + return; + } + } + + bool passMessage = true; + + // FIXME: how should we handle queueing here? + + { + std::string message_class = parsed.getClass(); + if (message_class == LLPLUGIN_MESSAGE_CLASS_INTERNAL) + { + passMessage = false; + + std::string message_name = parsed.getName(); + if (message_name == "load_plugin") + { + mPluginFile = parsed.getValue("file"); + mPluginDir = parsed.getValue("dir"); + } + else if (message_name == "shutdown_plugin") + { + setState(STATE_SHUTDOWNREQ); + } + else if (message_name == "shm_add") + { + std::string name = parsed.getValue("name"); + size_t size = (size_t)parsed.getValueS32("size"); + + sharedMemoryRegionsType::iterator iter = mSharedMemoryRegions.find(name); + if (iter != mSharedMemoryRegions.end()) + { + // Need to remove the old region first + LL_WARNS("Plugin") << "Adding a duplicate shared memory segment!" << LL_ENDL; + } + else + { + // This is a new region + LLPluginSharedMemory *region = new LLPluginSharedMemory; + if (region->attach(name, size)) + { + mSharedMemoryRegions.insert(sharedMemoryRegionsType::value_type(name, region)); + + std::stringstream addr; + addr << region->getMappedAddress(); + + // Send the add notification to the plugin + LLPluginMessage message("base", "shm_added"); + message.setValue("name", name); + message.setValueS32("size", (S32)size); + message.setValuePointer("address", region->getMappedAddress()); + sendMessageToPlugin(message); + + // and send the response to the parent + message.setMessage(LLPLUGIN_MESSAGE_CLASS_INTERNAL, "shm_add_response"); + message.setValue("name", name); + sendMessageToParent(message); + } + else + { + LL_WARNS("Plugin") << "Couldn't create a shared memory segment!" << LL_ENDL; + delete region; + } + } + + } + else if (message_name == "shm_remove") + { + std::string name = parsed.getValue("name"); + sharedMemoryRegionsType::iterator iter = mSharedMemoryRegions.find(name); + if (iter != mSharedMemoryRegions.end()) + { + // forward the remove request to the plugin -- its response will trigger us to detach the segment. + LLPluginMessage message("base", "shm_remove"); + message.setValue("name", name); + sendMessageToPlugin(message); + } + else + { + LL_WARNS("Plugin") << "shm_remove for unknown memory segment!" << LL_ENDL; + } + } + else if (message_name == "sleep_time") + { + mSleepTime = llmax(parsed.getValueReal("time"), 1.0 / 100.0); // clamp to maximum of 100Hz + } + else if (message_name == "crash") + { + // Crash the plugin + LL_ERRS("Plugin") << "Plugin crash requested." << LL_ENDL; + } + else if (message_name == "hang") + { + // Hang the plugin + LL_WARNS("Plugin") << "Plugin hang requested." << LL_ENDL; + while (1) + { + // wheeeeeeeee...... + } + } + else + { + LL_WARNS("Plugin") << "Unknown internal message from parent: " << message_name << LL_ENDL; + } + } + } + + if (passMessage && mInstance != NULL) + { + LLTimer elapsed; + + mInstance->sendMessage(message); + + mCPUElapsed += elapsed.getElapsedTimeF64(); + } } /* virtual */ void LLPluginProcessChild::receivePluginMessage(const std::string &message) { - LL_DEBUGS("Plugin") << "Received from plugin: " << message << LL_ENDL; - - if (mBlockingRequest) - { - // - LL_ERRS("Plugin") << "Can't send a message while already waiting on a blocking request -- aborting!" << LL_ENDL; - } - - // Incoming message from the plugin instance - bool passMessage = true; - - // FIXME: how should we handle queueing here? - - // Intercept certain base messages (responses to ones sent by this class) - { - // Decode this message - LLPluginMessage parsed; - parsed.parse(message); - - if (parsed.hasValue("blocking_request")) - { - mBlockingRequest = true; - } - - std::string message_class = parsed.getClass(); - if (message_class == "base") - { - std::string message_name = parsed.getName(); - if (message_name == "init_response") - { - // The plugin has finished initializing. - setState(STATE_RUNNING); - - // Don't pass this message up to the parent - passMessage = false; - - LLPluginMessage new_message(LLPLUGIN_MESSAGE_CLASS_INTERNAL, "load_plugin_response"); - LLSD versions = parsed.getValueLLSD("versions"); - new_message.setValueLLSD("versions", versions); - - if (parsed.hasValue("plugin_version")) - { - std::string plugin_version = parsed.getValue("plugin_version"); - new_message.setValueLLSD("plugin_version", plugin_version); - } - - // Let the parent know it's loaded and initialized. - sendMessageToParent(new_message); - } - else if (message_name == "goodbye") - { - setState(STATE_UNLOADED); - } - else if (message_name == "shm_remove_response") - { - // Don't pass this message up to the parent - passMessage = false; - - std::string name = parsed.getValue("name"); - sharedMemoryRegionsType::iterator iter = mSharedMemoryRegions.find(name); - if (iter != mSharedMemoryRegions.end()) - { - // detach the shared memory region - iter->second->detach(); - - // and remove it from our map - mSharedMemoryRegions.erase(iter); - - // Finally, send the response to the parent. - LLPluginMessage message(LLPLUGIN_MESSAGE_CLASS_INTERNAL, "shm_remove_response"); - message.setValue("name", name); - sendMessageToParent(message); - } - else - { - LL_WARNS("Plugin") << "shm_remove_response for unknown memory segment!" << LL_ENDL; - } - } - } - } - - if (passMessage) - { - LL_DEBUGS("Plugin") << "Passing through to parent: " << message << LL_ENDL; - writeMessageRaw(message); - } - - while (mBlockingRequest) - { - // The plugin wants to block and wait for a response to this message. - sleep(mSleepTime); // this will pump the message pipe and process messages - - if (mBlockingResponseReceived || mSocketError != APR_SUCCESS || (mMessagePipe == NULL)) - { - // Response has been received, or we've hit an error state. Stop waiting. - mBlockingRequest = false; - mBlockingResponseReceived = false; - } - } + LL_DEBUGS("Plugin") << "Received from plugin: " << message << LL_ENDL; + + if (mBlockingRequest) + { + // + LL_ERRS("Plugin") << "Can't send a message while already waiting on a blocking request -- aborting!" << LL_ENDL; + } + + // Incoming message from the plugin instance + bool passMessage = true; + + // FIXME: how should we handle queueing here? + + // Intercept certain base messages (responses to ones sent by this class) + { + // Decode this message + LLPluginMessage parsed; + parsed.parse(message); + + if (parsed.hasValue("blocking_request")) + { + mBlockingRequest = true; + } + + std::string message_class = parsed.getClass(); + if (message_class == "base") + { + std::string message_name = parsed.getName(); + if (message_name == "init_response") + { + // The plugin has finished initializing. + setState(STATE_RUNNING); + + // Don't pass this message up to the parent + passMessage = false; + + LLPluginMessage new_message(LLPLUGIN_MESSAGE_CLASS_INTERNAL, "load_plugin_response"); + LLSD versions = parsed.getValueLLSD("versions"); + new_message.setValueLLSD("versions", versions); + + if (parsed.hasValue("plugin_version")) + { + std::string plugin_version = parsed.getValue("plugin_version"); + new_message.setValueLLSD("plugin_version", plugin_version); + } + + // Let the parent know it's loaded and initialized. + sendMessageToParent(new_message); + } + else if (message_name == "goodbye") + { + setState(STATE_UNLOADED); + } + else if (message_name == "shm_remove_response") + { + // Don't pass this message up to the parent + passMessage = false; + + std::string name = parsed.getValue("name"); + sharedMemoryRegionsType::iterator iter = mSharedMemoryRegions.find(name); + if (iter != mSharedMemoryRegions.end()) + { + // detach the shared memory region + iter->second->detach(); + + // and remove it from our map + mSharedMemoryRegions.erase(iter); + + // Finally, send the response to the parent. + LLPluginMessage message(LLPLUGIN_MESSAGE_CLASS_INTERNAL, "shm_remove_response"); + message.setValue("name", name); + sendMessageToParent(message); + } + else + { + LL_WARNS("Plugin") << "shm_remove_response for unknown memory segment!" << LL_ENDL; + } + } + } + } + + if (passMessage) + { + LL_DEBUGS("Plugin") << "Passing through to parent: " << message << LL_ENDL; + writeMessageRaw(message); + } + + while (mBlockingRequest) + { + // The plugin wants to block and wait for a response to this message. + sleep(mSleepTime); // this will pump the message pipe and process messages + + if (mBlockingResponseReceived || mSocketError != APR_SUCCESS || (mMessagePipe == NULL)) + { + // Response has been received, or we've hit an error state. Stop waiting. + mBlockingRequest = false; + mBlockingResponseReceived = false; + } + } } void LLPluginProcessChild::setState(EState state) { - LL_DEBUGS("Plugin") << "setting state to " << state << LL_ENDL; - mState = state; + LL_DEBUGS("Plugin") << "setting state to " << state << LL_ENDL; + mState = state; }; void LLPluginProcessChild::deliverQueuedMessages() { - if (!mBlockingRequest) - { - while (!mMessageQueue.empty()) - { - receiveMessageRaw(mMessageQueue.front()); - mMessageQueue.pop(); - } - } + if (!mBlockingRequest) + { + while (!mMessageQueue.empty()) + { + receiveMessageRaw(mMessageQueue.front()); + mMessageQueue.pop(); + } + } } |