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Diffstat (limited to 'mysql/mysql/service_thd_alloc.h')
| -rw-r--r-- | mysql/mysql/service_thd_alloc.h | 132 |
1 files changed, 0 insertions, 132 deletions
diff --git a/mysql/mysql/service_thd_alloc.h b/mysql/mysql/service_thd_alloc.h deleted file mode 100644 index 5a89026..0000000 --- a/mysql/mysql/service_thd_alloc.h +++ /dev/null @@ -1,132 +0,0 @@ -#ifndef MYSQL_SERVICE_THD_ALLOC_INCLUDED -/* Copyright (c) 2009, 2015, Oracle and/or its affiliates. All rights reserved. - - This program is free software; you can redistribute it and/or modify - it under the terms of the GNU General Public License as published by - the Free Software Foundation; version 2 of the License. - - This program is distributed in the hope that it will be useful, - but WITHOUT ANY WARRANTY; without even the implied warranty of - MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the - GNU General Public License for more details. - - You should have received a copy of the GNU General Public License - along with this program; if not, write to the Free Software - Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA */ - -/** - @file - This service provdes functions to allocate memory in a connection local - memory pool. The memory allocated there will be automatically freed at the - end of the statement, don't use it for allocations that should live longer - than that. For short living allocations this is more efficient than - using my_malloc and friends, and automatic "garbage collection" allows not - to think about memory leaks. - - The pool is best for small to medium objects, don't use it for large - allocations - they are better served with my_malloc. -*/ - -#ifndef MYSQL_ABI_CHECK -#include <stdlib.h> -#endif - -#ifdef __cplusplus -class THD; -#define MYSQL_THD THD* -#else -#define MYSQL_THD void* -#endif - -#ifdef __cplusplus -extern "C" { -#endif - -#include <mysql/mysql_lex_string.h> - -extern struct thd_alloc_service_st { - void *(*thd_alloc_func)(MYSQL_THD, size_t); - void *(*thd_calloc_func)(MYSQL_THD, size_t); - char *(*thd_strdup_func)(MYSQL_THD, const char *); - char *(*thd_strmake_func)(MYSQL_THD, const char *, size_t); - void *(*thd_memdup_func)(MYSQL_THD, const void*, size_t); - MYSQL_LEX_STRING *(*thd_make_lex_string_func)(MYSQL_THD, MYSQL_LEX_STRING *, - const char *, size_t, int); -} *thd_alloc_service; - -#ifdef MYSQL_DYNAMIC_PLUGIN - -#define thd_alloc(thd,size) (thd_alloc_service->thd_alloc_func((thd), (size))) - -#define thd_calloc(thd,size) (thd_alloc_service->thd_calloc_func((thd), (size))) - -#define thd_strdup(thd,str) (thd_alloc_service->thd_strdup_func((thd), (str))) - -#define thd_strmake(thd,str,size) \ - (thd_alloc_service->thd_strmake_func((thd), (str), (size))) - -#define thd_memdup(thd,str,size) \ - (thd_alloc_service->thd_memdup_func((thd), (str), (size))) - -#define thd_make_lex_string(thd, lex_str, str, size, allocate_lex_string) \ - (thd_alloc_service->thd_make_lex_string_func((thd), (lex_str), (str), \ - (size), (allocate_lex_string))) - -#else - -/** - Allocate memory in the connection's local memory pool - - @details - When properly used in place of @c my_malloc(), this can significantly - improve concurrency. Don't use this or related functions to allocate - large chunks of memory. Use for temporary storage only. The memory - will be freed automatically at the end of the statement; no explicit - code is required to prevent memory leaks. - - @see alloc_root() -*/ -void *thd_alloc(MYSQL_THD thd, size_t size); -/** - @see thd_alloc() -*/ -void *thd_calloc(MYSQL_THD thd, size_t size); -/** - @see thd_alloc() -*/ -char *thd_strdup(MYSQL_THD thd, const char *str); -/** - @see thd_alloc() -*/ -char *thd_strmake(MYSQL_THD thd, const char *str, size_t size); -/** - @see thd_alloc() -*/ -void *thd_memdup(MYSQL_THD thd, const void* str, size_t size); - -/** - Create a LEX_STRING in this connection's local memory pool - - @param thd user thread connection handle - @param lex_str pointer to LEX_STRING object to be initialized - @param str initializer to be copied into lex_str - @param size length of str, in bytes - @param allocate_lex_string flag: if TRUE, allocate new LEX_STRING object, - instead of using lex_str value - @return NULL on failure, or pointer to the LEX_STRING object - - @see thd_alloc() -*/ -MYSQL_LEX_STRING *thd_make_lex_string(MYSQL_THD thd, MYSQL_LEX_STRING *lex_str, - const char *str, size_t size, - int allocate_lex_string); - -#endif - -#ifdef __cplusplus -} -#endif - -#define MYSQL_SERVICE_THD_ALLOC_INCLUDED -#endif - |