Committed from OJI_19980618_TIP_MERGE1.

git-svn-id: svn://10.0.0.236/trunk@6602 18797224-902f-48f8-a5cc-f745e15eee43

mozilla/xpcom/src/nsMalloc.cpp

@@ -0,0 +1,117 @@
+/* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 4 -*-
+ *
+ * The contents of this file are subject to the Netscape Public License
+ * Version 1.0 (the "NPL"); you may not use this file except in
+ * compliance with the NPL.  You may obtain a copy of the NPL at
+ * http://www.mozilla.org/NPL/
+ *
+ * Software distributed under the NPL is distributed on an "AS IS" basis,
+ * WITHOUT WARRANTY OF ANY KIND, either express or implied. See the NPL
+ * for the specific language governing rights and limitations under the
+ * NPL.
+ *
+ * The Initial Developer of this code under the NPL is Netscape
+ * Communications Corporation.  Portions created by Netscape are
+ * Copyright (C) 1998 Netscape Communications Corporation.  All Rights
+ * Reserved.
+ */
+
+////////////////////////////////////////////////////////////////////////////////
+// Implementation of nsIMalloc using NSPR
+////////////////////////////////////////////////////////////////////////////////
+
+#include "nsMalloc.h"
+
+static NS_DEFINE_IID(kISupportsIID, NS_ISUPPORTS_IID);
+static NS_DEFINE_IID(kIMallocIID, NS_IMALLOC_IID);
+
+nsMalloc::nsMalloc(nsISupports* outer)
+{
+    NS_INIT_AGGREGATED(outer);
+}
+
+nsMalloc::~nsMalloc(void)
+{
+}
+
+NS_IMPL_AGGREGATED(nsMalloc);
+
+NS_METHOD
+nsMalloc::AggregatedQueryInterface(const nsIID& aIID, void** aInstancePtr) 
+{
+    if (NULL == aInstancePtr) {                                            
+        return NS_ERROR_NULL_POINTER;                                        
+    }                                                                      
+    if (aIID.Equals(kIMallocIID) || 
+        aIID.Equals(kISupportsIID)) {
+        *aInstancePtr = (void*) this; 
+        AddRef(); 
+        return NS_OK; 
+    } 
+    return NS_NOINTERFACE;
+}
+
+NS_METHOD
+nsMalloc::Create(nsISupports* outer, const nsIID& aIID, void* *aInstancePtr)
+{
+    if (outer && !aIID.Equals(kISupportsIID))
+        return NS_NOINTERFACE;   // XXX right error?
+    nsMalloc* mm = new nsMalloc(outer);
+    nsresult result = mm->QueryInterface(aIID, aInstancePtr);
+    if (result != NS_OK) {
+        delete mm;
+    }
+    return result;
+}
+
+////////////////////////////////////////////////////////////////////////////////
+
+NS_METHOD_(void*)
+nsMalloc::Alloc(PRUint32 size)
+{
+    return PR_Malloc(size);
+}
+
+NS_METHOD_(void*)
+nsMalloc::Realloc(void* ptr, PRUint32 size)
+{
+    return PR_Realloc(ptr, size);
+}
+
+NS_METHOD_(void)
+nsMalloc::Free(void* ptr)
+{
+    PR_Free(ptr);
+}
+
+NS_METHOD_(PRInt32)
+nsMalloc::GetSize(void* ptr)
+{
+    return -1;
+}
+
+NS_METHOD_(PRBool)
+nsMalloc::DidAlloc(void* ptr)
+{
+    return PR_TRUE;
+}
+
+// For the definition of CallCacheFlushers()
+#ifdef XP_MAC
+#  ifndef NSPR20
+#    include "prmacos.h"
+#  else
+#    include "MacMemAllocator.h"
+#  endif
+#endif
+
+NS_METHOD_(void)
+nsMalloc::HeapMinimize(void)
+{
+#ifdef XP_MAC
+    // something wonderful
+    CallCacheFlushers(0x7fffffff);
+#endif
+}
+
+////////////////////////////////////////////////////////////////////////////////