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/*****************************************************************************
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Copyright (c) 2006, 2009, Innobase Oy. All Rights Reserved.
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Copyright (c) 2006, 2011, Oracle and/or its affiliates. All Rights Reserved.
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This program is free software; you can redistribute it and/or modify it under
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the terms of the GNU General Public License as published by the Free Software
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/**********************************************************************//**
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Allocate a block. The thread calling this function must hold
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buf_pool_mutex and must not hold buf_pool_zip_mutex or any block->mutex.
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The buf_pool_mutex may only be released and reacquired if lru != NULL.
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@return allocated block, possibly NULL if lru==NULL */
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The buf_pool_mutex may be released and reacquired.
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@return allocated block, never NULL */
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buf_buddy_alloc_low(
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or BUF_BUDDY_SIZES */
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ibool* lru) /*!< in: pointer to a variable that will be assigned
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TRUE if storage was allocated from the LRU list
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and buf_pool_mutex was temporarily released,
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or NULL if the LRU list should not be used */
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__attribute__((malloc));
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and buf_pool_mutex was temporarily released */
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__attribute__((malloc, nonnull));
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/**********************************************************************//**
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Deallocate a block. */
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/**********************************************************************//**
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Allocate a block. The thread calling this function must hold
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buf_pool_mutex and must not hold buf_pool_zip_mutex or any
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block->mutex. The buf_pool_mutex may only be released and reacquired
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if lru != NULL. This function should only be used for allocating
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compressed page frames or control blocks (buf_page_t). Allocated
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control blocks must be properly initialized immediately after
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buf_buddy_alloc() has returned the memory, before releasing
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@return allocated block, possibly NULL if lru == NULL */
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block->mutex. The buf_pool_mutex may be released and reacquired.
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This function should only be used for allocating compressed page frames.
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@return allocated block, never NULL */
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ulint size, /*!< in: block size, up to UNIV_PAGE_SIZE */
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ulint size, /*!< in: compressed page size
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(between PAGE_ZIP_MIN_SIZE and UNIV_PAGE_SIZE) */
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ibool* lru) /*!< in: pointer to a variable that will be assigned
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TRUE if storage was allocated from the LRU list
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and buf_pool_mutex was temporarily released,
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or NULL if the LRU list should not be used */
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and buf_pool_mutex was temporarily released */
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ut_ad(buf_pool_mutex_own());
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ut_ad(ut_is_2pow(size));
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ut_ad(size >= PAGE_ZIP_MIN_SIZE);
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ut_ad(size <= UNIV_PAGE_SIZE);
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return(buf_buddy_alloc_low(buf_buddy_get_slot(size), lru));
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return((byte*) buf_buddy_alloc_low(buf_buddy_get_slot(size), lru));
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/**********************************************************************//**
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ulint size) /*!< in: block size, up to UNIV_PAGE_SIZE */
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ut_ad(buf_pool_mutex_own());
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ut_ad(ut_is_2pow(size));
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ut_ad(size >= PAGE_ZIP_MIN_SIZE);
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ut_ad(size <= UNIV_PAGE_SIZE);
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buf_buddy_free_low(buf, buf_buddy_get_slot(size));
added
removed
storage/innodb_plugin/include/buf0buddy.ic
