diff d2/qtd/Memory.d @ 311:8674fd5f34f4 lifetime

Added d1/d2 top directories
author maxter <spambox@d-coding.com>
date Wed, 23 Dec 2009 16:17:22 +0200
parents
children 80b52f5e97b6
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line diff
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/d2/qtd/Memory.d	Wed Dec 23 16:17:22 2009 +0200
@@ -0,0 +1,118 @@
+module qt.Memory;
+
+import
+	core.exception,
+	core.memory,
+	core.stdc.stdlib;
+
+alias void delegate(Object) DEvent;
+extern(C) void rt_attachDisposeEvent(Object o, DEvent e);
+extern(C) void rt_detachDisposeEvent(Object o, DEvent e);
+extern(C) Object _d_toObject(void* p);
+
+/**
+	Object stack.
+*/
+final class StackAlloc
+{
+	alias typeof(this) This;
+	private void* _data;
+	
+	private static size_t align16(size_t size)
+	{
+	    return size + 16 - (size - size & ~15);        
+	}
+
+	/**
+	*/
+	this(size_t size)
+	{
+	    _data = (new void[size]).ptr;
+	}
+    
+	/**
+	*/
+	void* alloc(size_t size)
+	{
+	    void* res = _data;
+	    _data += align16(size);
+	    return res;            
+	}
+
+	/**
+	*/
+	void free(size_t size)
+	{
+	    _data -= align16(size);
+	}
+}
+
+/**
+	Size of the object stack.
+*/
+enum stackSize = 1024 * 1024;
+
+/**
+	Returns the object stack for the current thread.
+*/
+StackAlloc stackAlloc()
+{
+static StackAlloc stackAlloc;
+if (!stackAlloc)
+	stackAlloc = new StackAlloc(stackSize);
+return stackAlloc;
+}
+
+/**
+	C heap allocator.
+*/
+struct CAlloc
+{
+	/**
+	*/
+	static void* alloc(size_t size, uint flags = 0)
+	{
+		auto p = malloc(size);
+		if (!p)
+			onOutOfMemoryError;
+		return p;
+	}
+	
+	/**
+	*/	
+	static void* realloc(void* addr, size_t size)
+	{
+		auto p = realloc(addr, size);
+		if (!p)
+			onOutOfMemoryError;
+		return p;
+	}
+	
+	/**
+	*/
+	static void free(void* p, size_t size = 0)
+	{
+		free(p);		
+	}
+}
+
+/**
+	GC heap allocator.
+*/
+struct GCAlloc
+{
+	static void* alloc(size_t size, uint flags = 0)
+	{
+		return GC.malloc(size, flags);
+	}
+	
+	static void* realloc(void* addr, size_t size)
+	{
+		return GC.realloc(addr, size);
+	}
+	
+	static void free(void* addr, size_t size = 0)
+	{
+		GC.free(addr);
+	}
+}
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