remove GrAllocPool

src/gpu/GrAllocPool.cpp

-/*
- * Copyright 2010 Google Inc.
- *
- * Use of this source code is governed by a BSD-style license that can be
- * found in the LICENSE file.
- */
-
-#include "GrAllocPool.h"
-
-#include "GrTypes.h"
-
-#define GrAllocPool_MIN_BLOCK_SIZE      ((size_t)128)
-
-struct GrAllocPool::Block {
-    Block*  fNext;
-    char*   fPtr;
-    size_t  fBytesFree;
-    size_t  fBytesTotal;
-
-    static Block* Create(size_t size, Block* next) {
-        SkASSERT(size >= GrAllocPool_MIN_BLOCK_SIZE);
-
-        Block* block = (Block*)sk_malloc_throw(sizeof(Block) + size);
-        block->fNext = next;
-        block->fPtr = (char*)block + sizeof(Block);
-        block->fBytesFree = size;
-        block->fBytesTotal = size;
-        return block;
-    }
-
-    bool canAlloc(size_t bytes) const {
-        return bytes <= fBytesFree;
-    }
-
-    void* alloc(size_t bytes) {
-        SkASSERT(bytes <= fBytesFree);
-        fBytesFree -= bytes;
-        void* ptr = fPtr;
-        fPtr += bytes;
-        return ptr;
-    }
-
-    size_t release(size_t bytes) {
-        SkASSERT(bytes > 0);
-        size_t free = SkTMin(bytes, fBytesTotal - fBytesFree);
-        fBytesFree += free;
-        fPtr -= free;
-        return bytes - free;
-    }
-
-    bool empty() const { return fBytesTotal == fBytesFree; }
-};
-
-///////////////////////////////////////////////////////////////////////////////
-
-GrAllocPool::GrAllocPool(size_t blockSize) {
-    fBlock = NULL;
-    fMinBlockSize = SkTMax(blockSize, GrAllocPool_MIN_BLOCK_SIZE);
-    SkDEBUGCODE(fBlocksAllocated = 0;)
-}
-
-GrAllocPool::~GrAllocPool() {
-    this->reset();
-}
-
-void GrAllocPool::reset() {
-    this->validate();
-
-    Block* block = fBlock;
-    while (block) {
-        Block* next = block->fNext;
-        sk_free(block);
-        block = next;
-    }
-    fBlock = NULL;
-    SkDEBUGCODE(fBlocksAllocated = 0;)
-}
-
-void* GrAllocPool::alloc(size_t size) {
-    this->validate();
-
-    if (!fBlock || !fBlock->canAlloc(size)) {
-        size_t blockSize = SkTMax(fMinBlockSize, size);
-        fBlock = Block::Create(blockSize, fBlock);
-        SkDEBUGCODE(fBlocksAllocated += 1;)
-    }
-    return fBlock->alloc(size);
-}
-
-void GrAllocPool::release(size_t bytes) {
-    this->validate();
-
-    while (bytes && fBlock) {
-        bytes = fBlock->release(bytes);
-        if (fBlock->empty()) {
-            Block* next = fBlock->fNext;
-            sk_free(fBlock);
-            fBlock = next;
-            SkDEBUGCODE(fBlocksAllocated -= 1;)
-        }
-    }
-}
-
-#ifdef SK_DEBUG
-
-void GrAllocPool::validate() const {
-    Block* block = fBlock;
-    int count = 0;
-    while (block) {
-        count += 1;
-        block = block->fNext;
-    }
-    SkASSERT(fBlocksAllocated == count);
-}
-
-#endif