From 3dfe2108cfab31ba3ee5527e217d0d8e99a51162 Mon Sep 17 00:00:00 2001
From: git perforce import user <a@b>
Date: Tue, 25 Oct 2016 12:29:14 -0600
Subject: Initial commit: PhysX 3.4.0 Update @ 21294896 APEX 1.4.0 Update @
 21275617

[CL 21300167]
---
 APEX_1.4/framework/src/windows/AgMMFile.cpp | 80 +++++++++++++++++++++++++++++
 1 file changed, 80 insertions(+)
 create mode 100644 APEX_1.4/framework/src/windows/AgMMFile.cpp

(limited to 'APEX_1.4/framework/src/windows/AgMMFile.cpp')

diff --git a/APEX_1.4/framework/src/windows/AgMMFile.cpp b/APEX_1.4/framework/src/windows/AgMMFile.cpp
new file mode 100644
index 00000000..2b637772
--- /dev/null
+++ b/APEX_1.4/framework/src/windows/AgMMFile.cpp
@@ -0,0 +1,80 @@
+/*
+ * Copyright (c) 2008-2015, NVIDIA CORPORATION.  All rights reserved.
+ *
+ * NVIDIA CORPORATION and its licensors retain all intellectual property
+ * and proprietary rights in and to this software, related documentation
+ * and any modifications thereto.  Any use, reproduction, disclosure or
+ * distribution of this software and related documentation without an express
+ * license agreement from NVIDIA CORPORATION is strictly prohibited.
+ */
+
+// Copyright (c) 2004-2008 AGEIA Technologies, Inc. All rights reserved.
+// Copyright (c) 2001-2004 NovodeX AG. All rights reserved.  
+
+#include "AgMMFile.h"
+
+using namespace nvidia;
+
+AgMMFile::AgMMFile():
+mAddr(0), mSize(0), mFileH(0)
+{}
+
+AgMMFile::AgMMFile(char *name, unsigned int size, bool &alreadyExists)
+{
+	this->create(name, size, alreadyExists);
+}
+
+void AgMMFile::create(char *name, unsigned int size, bool &alreadyExists)
+{
+	alreadyExists = false;
+	mSize = size;
+
+	mFileH = CreateFileMapping(INVALID_HANDLE_VALUE,	// use paging file
+		NULL,											// default security
+		PAGE_READWRITE,									// read/write access
+		0,												// buffer size (upper 32bits)
+		mSize,											// buffer size (lower 32bits)
+		name);											// name of mapping object
+	if (mFileH == NULL || mFileH == INVALID_HANDLE_VALUE)
+	{
+		mSize=0;
+		mAddr=0;
+		return;
+	}
+
+	if (ERROR_ALREADY_EXISTS == GetLastError())
+	{
+		alreadyExists = true;
+	}
+
+	mAddr = MapViewOfFile(mFileH,		// handle to map object
+		FILE_MAP_READ|FILE_MAP_WRITE,	// read/write permission
+		0,                   
+		0,                   
+		mSize);
+
+	if (mFileH == NULL || mAddr == NULL)
+	{
+		mSize=0;
+		mAddr=0;
+		return;
+	}
+}
+
+void AgMMFile::destroy()
+{
+	if (!mAddr || !mFileH || !mSize)
+		return;
+
+	UnmapViewOfFile(mAddr);
+	CloseHandle(mFileH);
+
+	mAddr = 0;
+	mFileH = 0;
+	mSize = 0;
+}
+
+AgMMFile::~AgMMFile()
+{
+	destroy();
+}
-- 
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