1 files changed, 502 insertions, 502 deletions
diff --git a/indra/llplugin/llpluginsharedmemory.cpp b/indra/llplugin/llpluginsharedmemory.cpp
index 3fc9cbd973..e6c43f5fcc 100644
--- a/indra/llplugin/llpluginsharedmemory.cpp
+++ b/indra/llplugin/llpluginsharedmemory.cpp
@@ -1,502 +1,502 @@
-/** 
- * @file llpluginsharedmemory.cpp
- * LLPluginSharedMemory manages a shared memory segment for use by the LLPlugin API.
- *
- * @cond
- * $LicenseInfo:firstyear=2008&license=viewerlgpl$
- * 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
- * $/LicenseInfo$
- * @endcond
- */
-
-#include "linden_common.h"
-
-#include "llpluginsharedmemory.h"
-
-// on Mac and Linux, we use the native shm_open/mmap interface by using
-//	#define USE_SHM_OPEN_SHARED_MEMORY 1
-// in the appropriate sections below.
-
-// For Windows, use:
-//	#define USE_WIN32_SHARED_MEMORY 1
-
-// If we ever want to fall back to the apr implementation for a platform, use:
-//	#define USE_APR_SHARED_MEMORY 1
-
-#if LL_WINDOWS
-//	#define USE_APR_SHARED_MEMORY 1
-	#define USE_WIN32_SHARED_MEMORY 1
-#elif LL_DARWIN
-	#define USE_SHM_OPEN_SHARED_MEMORY 1
-#elif LL_LINUX
-	#define USE_SHM_OPEN_SHARED_MEMORY 1
-#endif
-
-
-// FIXME: This path thing is evil and unacceptable.
-#if LL_WINDOWS
-	#define APR_SHARED_MEMORY_PREFIX_STRING "C:\\LLPlugin_"
-	// Apparnently using the "Global\\" prefix here only works from administrative accounts under Vista.
-	// Other options I've seen referenced are "Local\\" and "Session\\".
-	#define WIN32_SHARED_MEMORY_PREFIX_STRING "Local\\LL_"
-#else
-	// mac and linux
-	#define APR_SHARED_MEMORY_PREFIX_STRING "/tmp/LLPlugin_"
-	#define SHM_OPEN_SHARED_MEMORY_PREFIX_STRING "/LL"
-#endif
-
-#if USE_APR_SHARED_MEMORY 
-	#include "llapr.h"
-	#include "apr_shm.h"
-#elif USE_SHM_OPEN_SHARED_MEMORY
-	#include <sys/fcntl.h>
-	#include <sys/mman.h>
-	#include <errno.h>
-#elif USE_WIN32_SHARED_MEMORY
-#include <windows.h>
-#endif // USE_APR_SHARED_MEMORY
-
-
-int LLPluginSharedMemory::sSegmentNumber = 0;
-
-std::string LLPluginSharedMemory::createName(void)
-{
-	std::stringstream newname;
-
-#if LL_WINDOWS
-	newname << GetCurrentProcessId();
-#else // LL_WINDOWS
-	newname << getpid();
-#endif // LL_WINDOWS
-		
-	newname << "_" << sSegmentNumber++;
-	
-	return newname.str();
-}
-
-/**
- * @brief LLPluginSharedMemoryImpl is the platform-dependent implementation of LLPluginSharedMemory. TODO:DOC is this necessary/sufficient? kinda obvious.
- *
- */
-class LLPluginSharedMemoryPlatformImpl
-{
-public:
-	LLPluginSharedMemoryPlatformImpl();
-	~LLPluginSharedMemoryPlatformImpl();
-	
-#if USE_APR_SHARED_MEMORY
-	apr_shm_t* mAprSharedMemory;	
-#elif USE_SHM_OPEN_SHARED_MEMORY
-	int mSharedMemoryFD;
-#elif USE_WIN32_SHARED_MEMORY
-	HANDLE mMapFile;
-#endif
-
-};
-
-/**
- * Constructor. Creates a shared memory segment.
- */
-LLPluginSharedMemory::LLPluginSharedMemory()
-{
-	mSize = 0;
-	mMappedAddress = NULL;
-	mNeedsDestroy = false;
-
-	mImpl = new LLPluginSharedMemoryPlatformImpl;
-}
-
-/**
- * Destructor. Uses destroy() and detach() to ensure shared memory segment is cleaned up.
- */
-LLPluginSharedMemory::~LLPluginSharedMemory()
-{
-	if(mNeedsDestroy)
-		destroy();
-	else
-		detach();
-		
-	unlink();
-	
-	delete mImpl;
-}
-
-#if USE_APR_SHARED_MEMORY
-// MARK: apr implementation
-
-LLPluginSharedMemoryPlatformImpl::LLPluginSharedMemoryPlatformImpl()
-{
-	mAprSharedMemory = NULL;
-}
-
-LLPluginSharedMemoryPlatformImpl::~LLPluginSharedMemoryPlatformImpl()
-{
-	
-}
-
-bool LLPluginSharedMemory::map(void)
-{
-	mMappedAddress = apr_shm_baseaddr_get(mImpl->mAprSharedMemory);
-	if(mMappedAddress == NULL)
-	{
-		return false;
-	}
-	
-	return true;
-}
-
-bool LLPluginSharedMemory::unmap(void)
-{
-	// This is a no-op under apr.
-	return true;
-}
-
-bool LLPluginSharedMemory::close(void)
-{
-	// This is a no-op under apr.
-	return true;
-}
-
-bool LLPluginSharedMemory::unlink(void)
-{
-	// This is a no-op under apr.
-	return true;
-}
-
-
-bool LLPluginSharedMemory::create(size_t size)
-{
-	mName = APR_SHARED_MEMORY_PREFIX_STRING;
-	mName += createName();
-	mSize = size;
-	
-	apr_status_t status = apr_shm_create( &(mImpl->mAprSharedMemory), mSize, mName.c_str(), gAPRPoolp );
-	
-	if(ll_apr_warn_status(status))
-	{
-		return false;
-	}
-
-	mNeedsDestroy = true;
-	
-	return map();
-}
-
-bool LLPluginSharedMemory::destroy(void)
-{
-	if(mImpl->mAprSharedMemory)
-	{
-		apr_status_t status = apr_shm_destroy(mImpl->mAprSharedMemory);
-		if(ll_apr_warn_status(status))
-		{
-			// TODO: Is this a fatal error?  I think not...
-		}
-		mImpl->mAprSharedMemory = NULL;
-	}
-	
-	return true;
-}
-
-bool LLPluginSharedMemory::attach(const std::string &name, size_t size)
-{
-	mName = name;
-	mSize = size;
-	
-	apr_status_t status = apr_shm_attach( &(mImpl->mAprSharedMemory), mName.c_str(), gAPRPoolp );
-	
-	if(ll_apr_warn_status(status))
-	{
-		return false;
-	}
-
-	return map();
-}
-
-
-bool LLPluginSharedMemory::detach(void)
-{
-	if(mImpl->mAprSharedMemory)
-	{
-		apr_status_t status = apr_shm_detach(mImpl->mAprSharedMemory);
-		if(ll_apr_warn_status(status))
-		{
-			// TODO: Is this a fatal error?  I think not...
-		}
-		mImpl->mAprSharedMemory = NULL;
-	}
-	
-	return true;
-}
-
-
-#elif USE_SHM_OPEN_SHARED_MEMORY
-// MARK: shm_open/mmap implementation
-
-LLPluginSharedMemoryPlatformImpl::LLPluginSharedMemoryPlatformImpl()
-{
-	mSharedMemoryFD = -1;
-}
-
-LLPluginSharedMemoryPlatformImpl::~LLPluginSharedMemoryPlatformImpl()
-{
-}
-
-bool LLPluginSharedMemory::map(void)
-{
-	mMappedAddress = ::mmap(NULL, mSize, PROT_READ | PROT_WRITE, MAP_SHARED, mImpl->mSharedMemoryFD, 0);
-	if(mMappedAddress == NULL)
-	{
-		return false;
-	}
-	
-	LL_DEBUGS("Plugin") << "memory mapped at " << mMappedAddress << LL_ENDL;
-
-	return true;
-}
-
-bool LLPluginSharedMemory::unmap(void)
-{
-	if(mMappedAddress != NULL)
-	{
-		LL_DEBUGS("Plugin") << "calling munmap(" << mMappedAddress << ", " << mSize << ")" << LL_ENDL;
-		if(::munmap(mMappedAddress, mSize) == -1)	
-		{
-			// TODO: Is this a fatal error?  I think not...
-		}
-		
-		mMappedAddress = NULL;
-	}
-
-	return true;
-}
-
-bool LLPluginSharedMemory::close(void)
-{
-	if(mImpl->mSharedMemoryFD != -1)
-	{
-		LL_DEBUGS("Plugin") << "calling close(" << mImpl->mSharedMemoryFD << ")" << LL_ENDL;
-		if(::close(mImpl->mSharedMemoryFD) == -1)
-		{
-			// TODO: Is this a fatal error?  I think not...
-		}
-		
-		mImpl->mSharedMemoryFD = -1;
-	}
-	return true;
-}
-
-bool LLPluginSharedMemory::unlink(void)
-{
-	if(!mName.empty())
-	{
-		if(::shm_unlink(mName.c_str()) == -1)
-		{
-			return false;
-		}
-	}
-		
-	return true;
-}
-
-
-bool LLPluginSharedMemory::create(size_t size)
-{
-	mName = SHM_OPEN_SHARED_MEMORY_PREFIX_STRING;
-	mName += createName();
-	mSize = size;
-	
-	// Preemptive unlink, just in case something didn't get cleaned up.
-	unlink();
-
-	mImpl->mSharedMemoryFD = ::shm_open(mName.c_str(), O_CREAT | O_RDWR, S_IRUSR | S_IWUSR);
-	if(mImpl->mSharedMemoryFD == -1)
-	{
-		return false;
-	}
-	
-	mNeedsDestroy = true;
-	
-	if(::ftruncate(mImpl->mSharedMemoryFD, mSize) == -1)
-	{
-		return false;
-	}
-	
-	
-	return map();
-}
-
-bool LLPluginSharedMemory::destroy(void)
-{
-	unmap();
-	close();	
-	
-	return true;
-}
-
-
-bool LLPluginSharedMemory::attach(const std::string &name, size_t size)
-{
-	mName = name;
-	mSize = size;
-
-	mImpl->mSharedMemoryFD = ::shm_open(mName.c_str(), O_RDWR, S_IRUSR | S_IWUSR);
-	if(mImpl->mSharedMemoryFD == -1)
-	{
-		return false;
-	}
-	
-	// unlink here so the segment will be cleaned up automatically after the last close.
-	unlink();
-	
-	return map();
-}
-
-bool LLPluginSharedMemory::detach(void)
-{
-	unmap();
-	close();	
-	return true;
-}
-
-#elif USE_WIN32_SHARED_MEMORY
-// MARK: Win32 CreateFileMapping-based implementation
-
-// Reference: http://msdn.microsoft.com/en-us/library/aa366551(VS.85).aspx
-
-LLPluginSharedMemoryPlatformImpl::LLPluginSharedMemoryPlatformImpl()
-{
-	mMapFile = NULL;
-}
-
-LLPluginSharedMemoryPlatformImpl::~LLPluginSharedMemoryPlatformImpl()
-{
-	
-}
-
-bool LLPluginSharedMemory::map(void)
-{
-	mMappedAddress = MapViewOfFile(
-		mImpl->mMapFile,			// handle to map object
-		FILE_MAP_ALL_ACCESS,		// read/write permission
-		0,                   
-		0,                   
-		mSize);
-		
-	if(mMappedAddress == NULL)
-	{
-		LL_WARNS("Plugin") << "MapViewOfFile failed: " << GetLastError() << LL_ENDL;
-		return false;
-	}
-	
-	LL_DEBUGS("Plugin") << "memory mapped at " << mMappedAddress << LL_ENDL;
-
-	return true;
-}
-
-bool LLPluginSharedMemory::unmap(void)
-{
-	if(mMappedAddress != NULL)
-	{
-		UnmapViewOfFile(mMappedAddress);	
-		mMappedAddress = NULL;
-	}
-
-	return true;
-}
-
-bool LLPluginSharedMemory::close(void)
-{
-	if(mImpl->mMapFile != NULL)
-	{
-		CloseHandle(mImpl->mMapFile);
-		mImpl->mMapFile = NULL;
-	}
-	
-	return true;
-}
-
-bool LLPluginSharedMemory::unlink(void)
-{
-	// This is a no-op on Windows.
-	return true;
-}
-
-
-bool LLPluginSharedMemory::create(size_t size)
-{
-	mName = WIN32_SHARED_MEMORY_PREFIX_STRING;
-	mName += createName();
-	mSize = size;
-
-	mImpl->mMapFile = CreateFileMappingA(
-                 INVALID_HANDLE_VALUE,		// use paging file
-                 NULL,						// default security 
-                 PAGE_READWRITE,			// read/write access
-                 0,							// max. object size 
-                 mSize,						// buffer size  
-                 mName.c_str());			// name of mapping object
-
-	if(mImpl->mMapFile == NULL)
-	{
-		LL_WARNS("Plugin") << "CreateFileMapping failed: " << GetLastError() << LL_ENDL;
-		return false;
-	}
-
-	mNeedsDestroy = true;
-		
-	return map();
-}
-
-bool LLPluginSharedMemory::destroy(void)
-{
-	unmap();
-	close();
-	return true;
-}
-
-bool LLPluginSharedMemory::attach(const std::string &name, size_t size)
-{
-	mName = name;
-	mSize = size;
-
-	mImpl->mMapFile = OpenFileMappingA(
-				FILE_MAP_ALL_ACCESS,		// read/write access
-				false,						// do not inherit the name
-				mName.c_str());				// name of mapping object
-	
-	if(mImpl->mMapFile == NULL)
-	{
-		LL_WARNS("Plugin") << "OpenFileMapping failed: " << GetLastError() << LL_ENDL;
-		return false;
-	}
-		
-	return map();
-}
-
-bool LLPluginSharedMemory::detach(void)
-{
-	unmap();
-	close();
-	return true;
-}
-
-
-
-#endif
+/**
+ * @file llpluginsharedmemory.cpp
+ * LLPluginSharedMemory manages a shared memory segment for use by the LLPlugin API.
+ *
+ * @cond
+ * $LicenseInfo:firstyear=2008&license=viewerlgpl$
+ * 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
+ * $/LicenseInfo$
+ * @endcond
+ */
+
+#include "linden_common.h"
+
+#include "llpluginsharedmemory.h"
+
+// on Mac and Linux, we use the native shm_open/mmap interface by using
+//  #define USE_SHM_OPEN_SHARED_MEMORY 1
+// in the appropriate sections below.
+
+// For Windows, use:
+//  #define USE_WIN32_SHARED_MEMORY 1
+
+// If we ever want to fall back to the apr implementation for a platform, use:
+//  #define USE_APR_SHARED_MEMORY 1
+
+#if LL_WINDOWS
+//  #define USE_APR_SHARED_MEMORY 1
+    #define USE_WIN32_SHARED_MEMORY 1
+#elif LL_DARWIN
+    #define USE_SHM_OPEN_SHARED_MEMORY 1
+#elif LL_LINUX
+    #define USE_SHM_OPEN_SHARED_MEMORY 1
+#endif
+
+
+// FIXME: This path thing is evil and unacceptable.
+#if LL_WINDOWS
+    #define APR_SHARED_MEMORY_PREFIX_STRING "C:\\LLPlugin_"
+    // Apparnently using the "Global\\" prefix here only works from administrative accounts under Vista.
+    // Other options I've seen referenced are "Local\\" and "Session\\".
+    #define WIN32_SHARED_MEMORY_PREFIX_STRING "Local\\LL_"
+#else
+    // mac and linux
+    #define APR_SHARED_MEMORY_PREFIX_STRING "/tmp/LLPlugin_"
+    #define SHM_OPEN_SHARED_MEMORY_PREFIX_STRING "/LL"
+#endif
+
+#if USE_APR_SHARED_MEMORY
+    #include "llapr.h"
+    #include "apr_shm.h"
+#elif USE_SHM_OPEN_SHARED_MEMORY
+    #include <sys/fcntl.h>
+    #include <sys/mman.h>
+    #include <errno.h>
+#elif USE_WIN32_SHARED_MEMORY
+#include <windows.h>
+#endif // USE_APR_SHARED_MEMORY
+
+
+int LLPluginSharedMemory::sSegmentNumber = 0;
+
+std::string LLPluginSharedMemory::createName(void)
+{
+    std::stringstream newname;
+
+#if LL_WINDOWS
+    newname << GetCurrentProcessId();
+#else // LL_WINDOWS
+    newname << getpid();
+#endif // LL_WINDOWS
+
+    newname << "_" << sSegmentNumber++;
+
+    return newname.str();
+}
+
+/**
+ * @brief LLPluginSharedMemoryImpl is the platform-dependent implementation of LLPluginSharedMemory. TODO:DOC is this necessary/sufficient? kinda obvious.
+ *
+ */
+class LLPluginSharedMemoryPlatformImpl
+{
+public:
+    LLPluginSharedMemoryPlatformImpl();
+    ~LLPluginSharedMemoryPlatformImpl();
+
+#if USE_APR_SHARED_MEMORY
+    apr_shm_t* mAprSharedMemory;
+#elif USE_SHM_OPEN_SHARED_MEMORY
+    int mSharedMemoryFD;
+#elif USE_WIN32_SHARED_MEMORY
+    HANDLE mMapFile;
+#endif
+
+};
+
+/**
+ * Constructor. Creates a shared memory segment.
+ */
+LLPluginSharedMemory::LLPluginSharedMemory()
+{
+    mSize = 0;
+    mMappedAddress = NULL;
+    mNeedsDestroy = false;
+
+    mImpl = new LLPluginSharedMemoryPlatformImpl;
+}
+
+/**
+ * Destructor. Uses destroy() and detach() to ensure shared memory segment is cleaned up.
+ */
+LLPluginSharedMemory::~LLPluginSharedMemory()
+{
+    if(mNeedsDestroy)
+        destroy();
+    else
+        detach();
+
+    unlink();
+
+    delete mImpl;
+}
+
+#if USE_APR_SHARED_MEMORY
+// MARK: apr implementation
+
+LLPluginSharedMemoryPlatformImpl::LLPluginSharedMemoryPlatformImpl()
+{
+    mAprSharedMemory = NULL;
+}
+
+LLPluginSharedMemoryPlatformImpl::~LLPluginSharedMemoryPlatformImpl()
+{
+
+}
+
+bool LLPluginSharedMemory::map(void)
+{
+    mMappedAddress = apr_shm_baseaddr_get(mImpl->mAprSharedMemory);
+    if(mMappedAddress == NULL)
+    {
+        return false;
+    }
+
+    return true;
+}
+
+bool LLPluginSharedMemory::unmap(void)
+{
+    // This is a no-op under apr.
+    return true;
+}
+
+bool LLPluginSharedMemory::close(void)
+{
+    // This is a no-op under apr.
+    return true;
+}
+
+bool LLPluginSharedMemory::unlink(void)
+{
+    // This is a no-op under apr.
+    return true;
+}
+
+
+bool LLPluginSharedMemory::create(size_t size)
+{
+    mName = APR_SHARED_MEMORY_PREFIX_STRING;
+    mName += createName();
+    mSize = size;
+
+    apr_status_t status = apr_shm_create( &(mImpl->mAprSharedMemory), mSize, mName.c_str(), gAPRPoolp );
+
+    if(ll_apr_warn_status(status))
+    {
+        return false;
+    }
+
+    mNeedsDestroy = true;
+
+    return map();
+}
+
+bool LLPluginSharedMemory::destroy(void)
+{
+    if(mImpl->mAprSharedMemory)
+    {
+        apr_status_t status = apr_shm_destroy(mImpl->mAprSharedMemory);
+        if(ll_apr_warn_status(status))
+        {
+            // TODO: Is this a fatal error?  I think not...
+        }
+        mImpl->mAprSharedMemory = NULL;
+    }
+
+    return true;
+}
+
+bool LLPluginSharedMemory::attach(const std::string &name, size_t size)
+{
+    mName = name;
+    mSize = size;
+
+    apr_status_t status = apr_shm_attach( &(mImpl->mAprSharedMemory), mName.c_str(), gAPRPoolp );
+
+    if(ll_apr_warn_status(status))
+    {
+        return false;
+    }
+
+    return map();
+}
+
+
+bool LLPluginSharedMemory::detach(void)
+{
+    if(mImpl->mAprSharedMemory)
+    {
+        apr_status_t status = apr_shm_detach(mImpl->mAprSharedMemory);
+        if(ll_apr_warn_status(status))
+        {
+            // TODO: Is this a fatal error?  I think not...
+        }
+        mImpl->mAprSharedMemory = NULL;
+    }
+
+    return true;
+}
+
+
+#elif USE_SHM_OPEN_SHARED_MEMORY
+// MARK: shm_open/mmap implementation
+
+LLPluginSharedMemoryPlatformImpl::LLPluginSharedMemoryPlatformImpl()
+{
+    mSharedMemoryFD = -1;
+}
+
+LLPluginSharedMemoryPlatformImpl::~LLPluginSharedMemoryPlatformImpl()
+{
+}
+
+bool LLPluginSharedMemory::map(void)
+{
+    mMappedAddress = ::mmap(NULL, mSize, PROT_READ | PROT_WRITE, MAP_SHARED, mImpl->mSharedMemoryFD, 0);
+    if(mMappedAddress == NULL)
+    {
+        return false;
+    }
+
+    LL_DEBUGS("Plugin") << "memory mapped at " << mMappedAddress << LL_ENDL;
+
+    return true;
+}
+
+bool LLPluginSharedMemory::unmap(void)
+{
+    if(mMappedAddress != NULL)
+    {
+        LL_DEBUGS("Plugin") << "calling munmap(" << mMappedAddress << ", " << mSize << ")" << LL_ENDL;
+        if(::munmap(mMappedAddress, mSize) == -1)
+        {
+            // TODO: Is this a fatal error?  I think not...
+        }
+
+        mMappedAddress = NULL;
+    }
+
+    return true;
+}
+
+bool LLPluginSharedMemory::close(void)
+{
+    if(mImpl->mSharedMemoryFD != -1)
+    {
+        LL_DEBUGS("Plugin") << "calling close(" << mImpl->mSharedMemoryFD << ")" << LL_ENDL;
+        if(::close(mImpl->mSharedMemoryFD) == -1)
+        {
+            // TODO: Is this a fatal error?  I think not...
+        }
+
+        mImpl->mSharedMemoryFD = -1;
+    }
+    return true;
+}
+
+bool LLPluginSharedMemory::unlink(void)
+{
+    if(!mName.empty())
+    {
+        if(::shm_unlink(mName.c_str()) == -1)
+        {
+            return false;
+        }
+    }
+
+    return true;
+}
+
+
+bool LLPluginSharedMemory::create(size_t size)
+{
+    mName = SHM_OPEN_SHARED_MEMORY_PREFIX_STRING;
+    mName += createName();
+    mSize = size;
+
+    // Preemptive unlink, just in case something didn't get cleaned up.
+    unlink();
+
+    mImpl->mSharedMemoryFD = ::shm_open(mName.c_str(), O_CREAT | O_RDWR, S_IRUSR | S_IWUSR);
+    if(mImpl->mSharedMemoryFD == -1)
+    {
+        return false;
+    }
+
+    mNeedsDestroy = true;
+
+    if(::ftruncate(mImpl->mSharedMemoryFD, mSize) == -1)
+    {
+        return false;
+    }
+
+
+    return map();
+}
+
+bool LLPluginSharedMemory::destroy(void)
+{
+    unmap();
+    close();
+
+    return true;
+}
+
+
+bool LLPluginSharedMemory::attach(const std::string &name, size_t size)
+{
+    mName = name;
+    mSize = size;
+
+    mImpl->mSharedMemoryFD = ::shm_open(mName.c_str(), O_RDWR, S_IRUSR | S_IWUSR);
+    if(mImpl->mSharedMemoryFD == -1)
+    {
+        return false;
+    }
+
+    // unlink here so the segment will be cleaned up automatically after the last close.
+    unlink();
+
+    return map();
+}
+
+bool LLPluginSharedMemory::detach(void)
+{
+    unmap();
+    close();
+    return true;
+}
+
+#elif USE_WIN32_SHARED_MEMORY
+// MARK: Win32 CreateFileMapping-based implementation
+
+// Reference: http://msdn.microsoft.com/en-us/library/aa366551(VS.85).aspx
+
+LLPluginSharedMemoryPlatformImpl::LLPluginSharedMemoryPlatformImpl()
+{
+    mMapFile = NULL;
+}
+
+LLPluginSharedMemoryPlatformImpl::~LLPluginSharedMemoryPlatformImpl()
+{
+
+}
+
+bool LLPluginSharedMemory::map(void)
+{
+    mMappedAddress = MapViewOfFile(
+        mImpl->mMapFile,            // handle to map object
+        FILE_MAP_ALL_ACCESS,        // read/write permission
+        0,
+        0,
+        mSize);
+
+    if(mMappedAddress == NULL)
+    {
+        LL_WARNS("Plugin") << "MapViewOfFile failed: " << GetLastError() << LL_ENDL;
+        return false;
+    }
+
+    LL_DEBUGS("Plugin") << "memory mapped at " << mMappedAddress << LL_ENDL;
+
+    return true;
+}
+
+bool LLPluginSharedMemory::unmap(void)
+{
+    if(mMappedAddress != NULL)
+    {
+        UnmapViewOfFile(mMappedAddress);
+        mMappedAddress = NULL;
+    }
+
+    return true;
+}
+
+bool LLPluginSharedMemory::close(void)
+{
+    if(mImpl->mMapFile != NULL)
+    {
+        CloseHandle(mImpl->mMapFile);
+        mImpl->mMapFile = NULL;
+    }
+
+    return true;
+}
+
+bool LLPluginSharedMemory::unlink(void)
+{
+    // This is a no-op on Windows.
+    return true;
+}
+
+
+bool LLPluginSharedMemory::create(size_t size)
+{
+    mName = WIN32_SHARED_MEMORY_PREFIX_STRING;
+    mName += createName();
+    mSize = size;
+
+    mImpl->mMapFile = CreateFileMappingA(
+                 INVALID_HANDLE_VALUE,      // use paging file
+                 NULL,                      // default security
+                 PAGE_READWRITE,            // read/write access
+                 0,                         // max. object size
+                 mSize,                     // buffer size
+                 mName.c_str());            // name of mapping object
+
+    if(mImpl->mMapFile == NULL)
+    {
+        LL_WARNS("Plugin") << "CreateFileMapping failed: " << GetLastError() << LL_ENDL;
+        return false;
+    }
+
+    mNeedsDestroy = true;
+
+    return map();
+}
+
+bool LLPluginSharedMemory::destroy(void)
+{
+    unmap();
+    close();
+    return true;
+}
+
+bool LLPluginSharedMemory::attach(const std::string &name, size_t size)
+{
+    mName = name;
+    mSize = size;
+
+    mImpl->mMapFile = OpenFileMappingA(
+                FILE_MAP_ALL_ACCESS,        // read/write access
+                false,                      // do not inherit the name
+                mName.c_str());             // name of mapping object
+
+    if(mImpl->mMapFile == NULL)
+    {
+        LL_WARNS("Plugin") << "OpenFileMapping failed: " << GetLastError() << LL_ENDL;
+        return false;
+    }
+
+    return map();
+}
+
+bool LLPluginSharedMemory::detach(void)
+{
+    unmap();
+    close();
+    return true;
+}
+
+
+
+#endif