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편집 파일: service_thd_rnd.h

#ifndef MYSQL_SERVICE_THD_RND_INCLUDED /* Copyright (C) 2017 MariaDB Corporation 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 02110-1335 USA */ /** @file This service provides access to the thd-local random number generator. It's preferable over the global one, because concurrent threads can generate random numbers without fighting each other over the access to the shared rnd state. */ #ifdef __cplusplus extern "C" { #endif #ifndef MYSQL_ABI_CHECK #include <stdlib.h> #endif extern struct thd_rnd_service_st { double (*thd_rnd_ptr)(MYSQL_THD thd); void (*thd_c_r_p_ptr)(MYSQL_THD thd, char *to, size_t length); } *thd_rnd_service; #ifdef MYSQL_DYNAMIC_PLUGIN #define thd_rnd(A) thd_rnd_service->thd_rnd_ptr(A) #define thd_create_random_password(A,B,C) thd_rnd_service->thd_c_r_p_ptr(A,B,C) #else double thd_rnd(MYSQL_THD thd); /** Generate string of printable random characters of requested length. @param to[out] Buffer for generation; must be at least length+1 bytes long; result string is always null-terminated @param length[in] How many random characters to put in buffer */ void thd_create_random_password(MYSQL_THD thd, char *to, size_t length); #endif #ifdef __cplusplus } #endif #define MYSQL_SERVICE_THD_RND_INCLUDED #endif