diff options
Diffstat (limited to 'indra')
| -rw-r--r-- | indra/llcommon/CMakeLists.txt | 2 | ||||
| -rw-r--r-- | indra/llcommon/llthreadsafequeue.cpp | 109 | ||||
| -rw-r--r-- | indra/llcommon/llthreadsafequeue.h | 205 | ||||
| -rw-r--r-- | indra/newview/CMakeLists.txt | 2 | ||||
| -rw-r--r-- | indra/newview/llappviewer.cpp | 5 | ||||
| -rw-r--r-- | indra/newview/llmainlooprepeater.cpp | 82 | ||||
| -rw-r--r-- | indra/newview/llmainlooprepeater.h | 65 |
7 files changed, 470 insertions, 0 deletions
diff --git a/indra/llcommon/CMakeLists.txt b/indra/llcommon/CMakeLists.txt index 7bad780dd8..7d53667f35 100644 --- a/indra/llcommon/CMakeLists.txt +++ b/indra/llcommon/CMakeLists.txt @@ -92,6 +92,7 @@ set(llcommon_SOURCE_FILES llstringtable.cpp llsys.cpp llthread.cpp + llthreadsafequeue.cpp lltimer.cpp lluri.cpp lluuid.cpp @@ -223,6 +224,7 @@ set(llcommon_HEADER_FILES llstringtable.h llsys.h llthread.h + llthreadsafequeue.h lltimer.h lltreeiterators.h lluri.h diff --git a/indra/llcommon/llthreadsafequeue.cpp b/indra/llcommon/llthreadsafequeue.cpp new file mode 100644 index 0000000000..a7141605ef --- /dev/null +++ b/indra/llcommon/llthreadsafequeue.cpp @@ -0,0 +1,109 @@ +/** + * @file llthread.cpp + * + * $LicenseInfo:firstyear=2004&license=viewerlgpl$ + * 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 <apr_pools.h> +#include <apr_queue.h> +#include "llthreadsafequeue.h" + + + +// LLThreadSafeQueueImplementation +//----------------------------------------------------------------------------- + + +LLThreadSafeQueueImplementation::LLThreadSafeQueueImplementation(apr_pool_t * pool, unsigned int capacity): + mOwnsPool(pool == 0), + mPool(pool), + mQueue(0) +{ + if(mOwnsPool) { + apr_status_t status = apr_pool_create(&mPool, 0); + if(status != APR_SUCCESS) throw LLThreadSafeQueueError("failed to allocate pool"); + } else { + ; // No op. + } + + apr_status_t status = apr_queue_create(&mQueue, capacity, mPool); + if(status != APR_SUCCESS) throw LLThreadSafeQueueError("failed to allocate queue"); +} + + +LLThreadSafeQueueImplementation::~LLThreadSafeQueueImplementation() +{ + if(mOwnsPool && (mPool != 0)) apr_pool_destroy(mPool); + if(mQueue != 0) { + if(apr_queue_size(mQueue) != 0) llwarns << + "terminating queue which still contains elements;" << + "memory will be leaked" << LL_ENDL; + apr_queue_term(mQueue); + } +} + + +void LLThreadSafeQueueImplementation::pushFront(void * element) +{ + apr_status_t status = apr_queue_push(mQueue, element); + + if(status == APR_EINTR) { + throw LLThreadSafeQueueInterrupt(); + } else if(status != APR_SUCCESS) { + throw LLThreadSafeQueueError("push failed"); + } else { + ; // Success. + } +} + + +bool LLThreadSafeQueueImplementation::tryPushFront(void * element){ + return apr_queue_trypush(mQueue, element) == APR_SUCCESS; +} + + +void * LLThreadSafeQueueImplementation::popBack(void) +{ + void * element; + apr_status_t status = apr_queue_pop(mQueue, &element); + + if(status == APR_EINTR) { + throw LLThreadSafeQueueInterrupt(); + } else if(status != APR_SUCCESS) { + throw LLThreadSafeQueueError("pop failed"); + } else { + return element; + } +} + + +bool LLThreadSafeQueueImplementation::tryPopBack(void *& element) +{ + return apr_queue_trypop(mQueue, &element) == APR_SUCCESS; +} + + +size_t LLThreadSafeQueueImplementation::size() +{ + return apr_queue_size(mQueue); +} diff --git a/indra/llcommon/llthreadsafequeue.h b/indra/llcommon/llthreadsafequeue.h new file mode 100644 index 0000000000..46c8b91932 --- /dev/null +++ b/indra/llcommon/llthreadsafequeue.h @@ -0,0 +1,205 @@ +/** + * @file llthreadsafequeue.h + * @brief Base classes for thread, mutex and condition handling. + * + * $LicenseInfo:firstyear=2004&license=viewerlgpl$ + * 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_LLTHREADSAFEQUEUE_H +#define LL_LLTHREADSAFEQUEUE_H + + +#include <string> +#include <stdexcept> + + +struct apr_pool_t; // From apr_pools.h +class LLThreadSafeQueueImplementation; // See below. + + +// +// A general queue exception. +// +class LLThreadSafeQueueError: +public std::runtime_error +{ +public: + LLThreadSafeQueueError(std::string const & message): + std::runtime_error(message) + { + ; // No op. + } +}; + + +// +// An exception raised when blocking operations are interrupted. +// +class LLThreadSafeQueueInterrupt: + public LLThreadSafeQueueError +{ +public: + LLThreadSafeQueueInterrupt(void): + LLThreadSafeQueueError("queue operation interrupted") + { + ; // No op. + } +}; + + +struct apr_queue_t; // From apr_queue.h + + +// +// Implementation details. +// +class LLThreadSafeQueueImplementation +{ +public: + LLThreadSafeQueueImplementation(apr_pool_t * pool, unsigned int capacity); + ~LLThreadSafeQueueImplementation(); + void pushFront(void * element); + bool tryPushFront(void * element); + void * popBack(void); + bool tryPopBack(void *& element); + size_t size(); + +private: + bool mOwnsPool; + apr_pool_t * mPool; + apr_queue_t * mQueue; +}; + + +// +// Implements a thread safe FIFO. +// +template<typename ElementT> +class LLThreadSafeQueue +{ +public: + typedef ElementT value_type; + + // If the pool is set to NULL one will be allocated and managed by this + // queue. + LLThreadSafeQueue(apr_pool_t * pool = 0, unsigned int capacity = 1024); + + // Add an element to the front of queue (will block if the queue has + // reached capacity). + // + // This call will raise an interrupt error if the queue is deleted while + // the caller is blocked. + void pushFront(ElementT const & element); + + // Try to add an element to the front ofqueue without blocking. Returns + // true only if the element was actually added. + bool tryPushFront(ElementT const & element); + + // Pop the element at the end of the queue (will block if the queue is + // empty). + // + // This call will raise an interrupt error if the queue is deleted while + // the caller is blocked. + ElementT popBack(void); + + // Pop an element from the end of the queue if there is one available. + // Returns true only if an element was popped. + bool tryPopBack(ElementT & element); + + // Returns the size of the queue. + size_t size(); + +private: + LLThreadSafeQueueImplementation mImplementation; +}; + + + +// LLThreadSafeQueue +//----------------------------------------------------------------------------- + + +template<typename ElementT> +LLThreadSafeQueue<ElementT>::LLThreadSafeQueue(apr_pool_t * pool, unsigned int capacity): + mImplementation(pool, capacity) +{ + ; // No op. +} + + +template<typename ElementT> +void LLThreadSafeQueue<ElementT>::pushFront(ElementT const & element) +{ + ElementT * elementCopy = new ElementT(element); + try { + mImplementation.pushFront(elementCopy); + } catch (LLThreadSafeQueueInterrupt) { + delete elementCopy; + throw; + } +} + + +template<typename ElementT> +bool LLThreadSafeQueue<ElementT>::tryPushFront(ElementT const & element) +{ + ElementT * elementCopy = new ElementT(element); + bool result = mImplementation.tryPushFront(elementCopy); + if(!result) delete elementCopy; + return result; +} + + +template<typename ElementT> +ElementT LLThreadSafeQueue<ElementT>::popBack(void) +{ + ElementT * element = reinterpret_cast<ElementT *> (mImplementation.popBack()); + ElementT result(*element); + delete element; + return result; +} + + +template<typename ElementT> +bool LLThreadSafeQueue<ElementT>::tryPopBack(ElementT & element) +{ + void * storedElement; + bool result = mImplementation.tryPopBack(storedElement); + if(result) { + ElementT * elementPtr = reinterpret_cast<ElementT *>(storedElement); + element = *elementPtr; + delete elementPtr; + } else { + ; // No op. + } + return result; +} + + +template<typename ElementT> +size_t LLThreadSafeQueue<ElementT>::size(void) +{ + return mImplementation.size(); +} + + +#endif diff --git a/indra/newview/CMakeLists.txt b/indra/newview/CMakeLists.txt index a9d1fd9064..36cfa615f0 100644 --- a/indra/newview/CMakeLists.txt +++ b/indra/newview/CMakeLists.txt @@ -283,6 +283,7 @@ set(viewer_SOURCE_FILES llloginhandler.cpp lllogininstance.cpp llmachineid.cpp + llmainlooprepeater.cpp llmanip.cpp llmaniprotate.cpp llmanipscale.cpp @@ -815,6 +816,7 @@ set(viewer_HEADER_FILES llloginhandler.h lllogininstance.h llmachineid.h + llmainlooprepeater.h llmanip.h llmaniprotate.h llmanipscale.h diff --git a/indra/newview/llappviewer.cpp b/indra/newview/llappviewer.cpp index c0ec15f436..438f8668ae 100644 --- a/indra/newview/llappviewer.cpp +++ b/indra/newview/llappviewer.cpp @@ -197,6 +197,8 @@ #include "llsecapi.h" #include "llmachineid.h" +#include "llmainlooprepeater.h" + // *FIX: These extern globals should be cleaned up. // The globals either represent state/config/resource-storage of either // this app, or another 'component' of the viewer. App globals should be @@ -801,6 +803,9 @@ bool LLAppViewer::init() return 1; } + // Initialize the repeater service. + LLMainLoopRepeater::getInstance()->start(); + // // Initialize the window // diff --git a/indra/newview/llmainlooprepeater.cpp b/indra/newview/llmainlooprepeater.cpp new file mode 100644 index 0000000000..c2eba97641 --- /dev/null +++ b/indra/newview/llmainlooprepeater.cpp @@ -0,0 +1,82 @@ +/** + * @file llmachineid.cpp + * @brief retrieves unique machine ids + * + * $LicenseInfo:firstyear=2009&license=viewerlgpl$ + * 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 "llviewerprecompiledheaders.h" +#include "llapr.h" +#include "llevents.h" +#include "llmainlooprepeater.h" + + + +// LLMainLoopRepeater +//----------------------------------------------------------------------------- + + +LLMainLoopRepeater::LLMainLoopRepeater(void): + mQueue(gAPRPoolp, 1024) +{ + ; // No op. +} + + +void LLMainLoopRepeater::start(void) +{ + mMainLoopConnection = LLEventPumps::instance(). + obtain("mainloop").listen("stupid name here", boost::bind(&LLMainLoopRepeater::onMainLoop, this, _1)); + mRepeaterConnection = LLEventPumps::instance(). + obtain("mainlooprepeater").listen("other stupid name here", boost::bind(&LLMainLoopRepeater::onMessage, this, _1)); +} + + +void LLMainLoopRepeater::stop(void) +{ + mMainLoopConnection.release(); + mRepeaterConnection.release(); +} + + +bool LLMainLoopRepeater::onMainLoop(LLSD const &) +{ + LLSD message; + while(mQueue.tryPopBack(message)) { + std::string pump = message["pump"].asString(); + if(pump.length() == 0 ) continue; // No pump. + LLEventPumps::instance().obtain(pump).post(message["payload"]); + } + return false; +} + + +bool LLMainLoopRepeater::onMessage(LLSD const & event) +{ + try { + mQueue.pushFront(event); + } catch(LLThreadSafeQueueError & e) { + llwarns << "could not repeat message (" << e.what() << ")" << + event.asString() << LL_ENDL; + } + return false; +} diff --git a/indra/newview/llmainlooprepeater.h b/indra/newview/llmainlooprepeater.h new file mode 100644 index 0000000000..96b83b4916 --- /dev/null +++ b/indra/newview/llmainlooprepeater.h @@ -0,0 +1,65 @@ +/** + * @file llmainlooprepeater.h + * @brief a service for repeating messages on the main loop. + * + * $LicenseInfo:firstyear=2010&license=viewerlgpl$ + * 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_LLMAINLOOPREPEATER_H +#define LL_LLMAINLOOPREPEATER_H + + +#include "llsd.h" +#include "llthreadsafequeue.h" + + +// +// A service which creates the pump 'mainlooprepeater' to which any thread can +// post a message that will be re-posted on the main loop. +// +// The posted message should contain two map elements: pump and payload. The +// pump value is a string naming the pump to which the message should be +// re-posted. The payload value is what will be posted to the designated pump. +// +class LLMainLoopRepeater: + public LLSingleton<LLMainLoopRepeater> +{ +public: + LLMainLoopRepeater(void); + + // Start the repeater service. + void start(void); + + // Stop the repeater service. + void stop(void); + +private: + LLTempBoundListener mMainLoopConnection; + LLTempBoundListener mRepeaterConnection; + LLThreadSafeQueue<LLSD> mQueue; + + bool onMainLoop(LLSD const &); + bool onMessage(LLSD const & event); +}; + + +#endif |