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7b8bfb2a93
Bug#12093 "SP not found on second PS execution if another thread drops other SP in between" and Bug#21294 "executing a prepared statement that executes a stored function which was recreat" Stored functions are resolved at prepared statement prepare only. If someone flushes the stored functions cache between prepare and execute, execution fails. The fix is to detect the situation of the cache flush and automatically reprepare the prepared statement after it. mysql-test/r/ps_ddl.result: Update results (Bug#12093 and Bug#21294, the test cases are already in the source tree). mysql-test/r/ps_ddl1.result: Update results (Bug#12093 and Bug#21294, the test cases are already in the source tree). mysql-test/r/sp-error.result: Update results (Bug#12093 and Bug#21294, the test cases are already in the source tree). mysql-test/t/ps_ddl.test: Modify the test to not expect an error where there is no error any more (Bug#12093, Bug#21294). mysql-test/t/ps_ddl1.test: Modify the test to not expect an error where there is no error any more (Bug#12093, Bug#21294). mysql-test/t/sp-error.test: Modify the test to not expect an error where there is no error any more (Bug#12093, Bug#21294). sql/sp_cache.cc: Implement sp_cache_version() -- returns the current version of a stored routines cache. sql/sp_cache.h: Declare sp_cache_version(). sql/sql_prepare.cc: Keep track of stored functions cache version, and invalidate the statement if it changed between prepared statement prepare and execute (and the statement actually uses stored routines).
63 lines
1.8 KiB
C++
63 lines
1.8 KiB
C++
/* -*- C++ -*- */
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/* Copyright (C) 2002 MySQL AB
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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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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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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., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA */
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#ifndef _SP_CACHE_H_
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#define _SP_CACHE_H_
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#ifdef USE_PRAGMA_INTERFACE
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#pragma interface /* gcc class implementation */
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#endif
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/*
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Stored procedures/functions cache. This is used as follows:
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* Each thread has its own cache.
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* Each sp_head object is put into its thread cache before it is used, and
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then remains in the cache until deleted.
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*/
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class sp_head;
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class sp_cache;
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/*
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Cache usage scenarios:
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1. Application-wide init:
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sp_cache_init();
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2. SP execution in thread:
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2.1 While holding sp_head* pointers:
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// look up a routine in the cache (no checks if it is up to date or not)
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sp_cache_lookup();
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sp_cache_insert();
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sp_cache_invalidate();
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2.2 When not holding any sp_head* pointers:
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sp_cache_flush_obsolete();
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3. Before thread exit:
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sp_cache_clear();
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*/
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void sp_cache_init();
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void sp_cache_clear(sp_cache **cp);
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void sp_cache_insert(sp_cache **cp, sp_head *sp);
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sp_head *sp_cache_lookup(sp_cache **cp, sp_name *name);
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void sp_cache_invalidate();
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void sp_cache_flush_obsolete(sp_cache **cp);
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ulong sp_cache_version(sp_cache **cp);
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#endif /* _SP_CACHE_H_ */
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