The Tor Browser: gfx/skia/trunk/src/gpu/GrAllocPool.h@6474c204b198

Cloned upstream origin tor-browser at tor-browser-31.3.0esr-4.5-1-build1
revision ID fc1c9ff7c1b2defdbc039f12214767608f46423f for hacking purpose.

     1 /*

     2  * Copyright 2010 Google Inc.

     3  *

     4  * Use of this source code is governed by a BSD-style license that can be

     5  * found in the LICENSE file.

     6  */

     8 #ifndef GrAllocPool_DEFINED

     9 #define GrAllocPool_DEFINED

    11 #include "SkTypes.h"

    13 class GrAllocPool : public SkNoncopyable {

    14 public:

    15     GrAllocPool(size_t blockSize = 0);

    16     ~GrAllocPool();

    18     /**

    19      *  Frees all blocks that have been allocated with alloc().

    20      */

    21     void reset();

    23     /**

    24      *  Returns a block of memory bytes size big. This address must not be

    25      *  passed to realloc/free/delete or any other function that assumes the

    26      *  address was allocated by malloc or new (because it hasn't).

    27      */

    28     void* alloc(size_t bytes);

    30     /**

    31      * Releases the most recently allocated bytes back to allocpool.

    32      */

    33     void release(size_t bytes);

    35 private:

    36     struct Block;

    38     Block*  fBlock;

    39     size_t  fMinBlockSize;

    41 #ifdef SK_DEBUG

    42     int fBlocksAllocated;

    43     void validate() const;

    44 #else

    45     void validate() const {}

    46 #endif

    47 };

    49 template <typename T> class GrTAllocPool {

    50 public:

    51     GrTAllocPool(int count) : fPool(count * sizeof(T)) {}

    53     void reset() { fPool.reset(); }

    54     T* alloc() { return (T*)fPool.alloc(sizeof(T)); }

    56 private:

    57     GrAllocPool fPool;

    58 };

    60 #endif

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