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- abstractions/tb
- externals/tb

1 files changed, 82 insertions, 0 deletions

diff --git a/sc4pd/headers/lang/AdvancingAllocPool.h b/sc4pd/headers/lang/AdvancingAllocPool.h
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+++ b/sc4pd/headers/lang/AdvancingAllocPool.h
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+/*
+	SuperCollider real time audio synthesis system
+    Copyright (c) 2002 James McCartney. All rights reserved.
+	http://www.audiosynth.com
+
+    This program is free software; you can redistribute it and/or modify
+    it under the terms of the GNU General Public License as published by
+    the Free Software Foundation; either version 2 of the License, or
+    (at your option) any later version.
+
+    This program 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 General Public License for more details.
+
+    You should have received a copy of the GNU General Public License
+    along with this program; if not, write to the Free Software
+    Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
+*/
+/*
+
+AdvancingAllocPool implements a simple advancing pointer allocation scheme.
+There is no Free(). All objects in the pool are freed at once with FreeAll().
+Thus it is very fast.
+
+*/
+
+#ifndef _AdvancingAllocPool_
+#define _AdvancingAllocPool_
+
+#include <stdexcept>
+#include <stdlib.h>
+
+class AllocPool;
+
+struct AdvancingAllocPoolChunk;
+
+typedef int int32;
+
+inline void FailNil(void *ptr) {
+	if (!ptr) throw std::runtime_error("alloc failed");
+}
+
+struct AdvancingAllocPoolChunkHdr {
+	AdvancingAllocPoolChunk *mNext;
+	size_t mSize;
+	int32 mPad1, mPad2;
+};
+
+struct AdvancingAllocPoolChunk {
+	AdvancingAllocPoolChunk *mNext;
+	size_t mSize;
+	int32 mPad1, mPad2;
+	char mSpace[16];
+};
+
+class AdvancingAllocPool 
+{
+public:
+	AdvancingAllocPool();
+	~AdvancingAllocPool() { FreeAll(); }
+
+	void Init(AllocPool *inAllocPool, size_t initSize, size_t growSize, size_t tooBigSize);
+		
+	void *Alloc(size_t inBytes);
+	void FreeAll();
+	
+	bool SanityCheck();
+	
+private:
+	void AddChunk(size_t inSize);
+	
+	AllocPool* mAllocPool;
+	size_t mInitSize;
+	size_t mGrowSize;
+	size_t mCurSize;
+	size_t mTooBig;
+	AdvancingAllocPoolChunk *mChunks;
+	AdvancingAllocPoolChunk *mFatties;
+};
+
+#endif