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5644256598
Let us use implement a simple fixed-size allocator for the adaptive hash index, insted of complicating mem_heap_t or mem_block_info_t. MEM_HEAP_BTR_SEARCH: Remove. mem_block_info_t::free_block(), mem_heap_free_block_free(): Remove. mem_heap_free_top(), mem_heap_get_top(): Remove. btr_sea::partition::spare: Replaces mem_block_info_t::free_block. This keeps one spare block per adaptive hash index partition, to process an insert. We must not wait for buf_pool.mutex while holding any btr_sea::partition::latch. That is why we cache one block for future allocations. This is protected by a new btr_sea::partition::blocks_mutex in order to relieve pressure on btr_sea::partition::latch. btr_sea::partition::prepare_insert(): Replaces btr_search_check_free_space_in_heap(). btr_sea::partition::erase(): Replaces ha_search_and_delete_if_found(). btr_sea::partition::cleanup_after_erase(): Replaces the most part of ha_delete_hash_node(). Unlike the previous implementation, we will retain a spare block for prepare_insert(). This should reduce some contention on buf_pool.mutex. btr_search.n_parts: Replaces btr_ahi_parts. btr_search.enabled: Replaces btr_search_enabled. This must hold whenever buf_block_t::index is set while a thread is holding a btr_sea::partition::latch. dict_index_t::search_info: Remove pointer indirection, and use Atomic_relaxed or Atomic_counter for most fields. btr_search_guess_on_hash(): Let the caller ensure that latch_mode is BTR_MODIFY_LEAF or BTR_SEARCH_LEAF. Release btr_sea::partition::latch before buffer-fixing the block. The page latch that we already acquired is preventing buffer pool eviction. We must validate both block->index and block->page.state while holding part.latch in order to avoid race conditions with buffer page relocation or buf_pool_t::resize(). btr_search_check_guess(): Remove the constant parameter can_only_compare_to_cursor_rec=false. ahi_node: Replaces ha_node_t. This has been tested by running the regression test suite with the adaptive hash index enabled: ./mtr --mysqld=--loose-innodb-adaptive-hash-index=ON Reviewed by: Vladislav Lesin
44 lines
1.8 KiB
CMake
44 lines
1.8 KiB
CMake
# Copyright (c) 2021, MariaDB Corporation.
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#
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# This program is free software; you can redistribute it and/or modify
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# it under the terms of the GNU General Public License as published by
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# the Free Software Foundation; version 2 of the License.
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#
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# This program is distributed in the hope that it will be useful,
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# but WITHOUT ANY WARRANTY; without even the implied warranty of
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# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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# GNU General Public License for more details.
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#
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# You should have received a copy of the GNU General Public License
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# along with this program; if not, write to the Free Software
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# Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1335 USA
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INCLUDE_DIRECTORIES(${CMAKE_SOURCE_DIR}/include
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${CMAKE_SOURCE_DIR}/unittest/mytap
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${CMAKE_SOURCE_DIR}/storage/innobase/include
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${CMAKE_SOURCE_DIR}/tpool)
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ADD_EXECUTABLE(innodb_rbt-t innodb_rbt-t.cc ../ut/ut0rbt.cc)
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TARGET_LINK_LIBRARIES(innodb_rbt-t mysys mytap)
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ADD_DEPENDENCIES(innodb_rbt-t GenError)
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MY_ADD_TEST(innodb_rbt)
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ADD_EXECUTABLE(innodb_fts-t innodb_fts-t.cc)
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TARGET_LINK_LIBRARIES(innodb_fts-t mysys mytap)
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ADD_DEPENDENCIES(innodb_fts-t GenError)
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MY_ADD_TEST(innodb_fts)
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IF (WITH_INNODB_AHI)
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ADD_EXECUTABLE(innodb_ahi-t innodb_ahi-t.cc)
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TARGET_LINK_LIBRARIES(innodb_ahi-t mysys mytap)
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ADD_DEPENDENCIES(innodb_ahi-t GenError)
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MY_ADD_TEST(innodb_ahi)
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ENDIF()
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# See explanation in innobase/CmakeLists.txt
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IF(CMAKE_SYSTEM_PROCESSOR MATCHES "ppc64|powerpc64|s390x")
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ADD_COMPILE_FLAGS(
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../sync/srw_lock.cc
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COMPILE_FLAGS "-mhtm"
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)
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ENDIF()
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ADD_EXECUTABLE(innodb_sync-t innodb_sync-t.cc ../sync/srw_lock.cc)
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TARGET_LINK_LIBRARIES(innodb_sync-t mysys mytap)
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ADD_DEPENDENCIES(innodb_sync-t GenError)
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MY_ADD_TEST(innodb_sync)
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