修复签章浮动靠左问题
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lihansani
199
mysql/include/my_thread.h
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199
mysql/include/my_thread.h
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/* Copyright (c) 2000, 2023, Oracle and/or its affiliates.
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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, version 2.0,
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as published by the Free Software Foundation.
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This program is also distributed with certain software (including
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but not limited to OpenSSL) that is licensed under separate terms,
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as designated in a particular file or component or in included license
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documentation. The authors of MySQL hereby grant you an additional
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permission to link the program and your derivative works with the
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separately licensed software that they have included with MySQL.
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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, version 2.0, 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., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA */
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/* Defines to make different thread packages compatible */
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#ifndef MY_THREAD_INCLUDED
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#define MY_THREAD_INCLUDED
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#include "my_global.h" /* my_bool */
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#if !defined(_WIN32)
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#include <pthread.h>
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#endif
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#ifndef ETIME
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#define ETIME ETIMEDOUT /* For FreeBSD */
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#endif
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#ifndef ETIMEDOUT
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#define ETIMEDOUT 145 /* Win32 doesn't have this */
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#endif
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/*
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MySQL can survive with 32K, but some glibc libraries require > 128K stack
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To resolve hostnames. Also recursive stored procedures needs stack.
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*/
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#if defined(__sparc) && (defined(__SUNPRO_CC) || defined(__SUNPRO_C))
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#define STACK_MULTIPLIER 2UL
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#else
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#define STACK_MULTIPLIER 1UL
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#endif
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#if SIZEOF_CHARP > 4
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#define DEFAULT_THREAD_STACK (STACK_MULTIPLIER * 256UL * 1024UL)
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#else
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#define DEFAULT_THREAD_STACK (STACK_MULTIPLIER * 192UL * 1024UL)
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#endif
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#ifdef __cplusplus
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#define EXTERNC extern "C"
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#else
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#define EXTERNC
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#endif
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C_MODE_START
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#ifdef _WIN32
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typedef volatile LONG my_thread_once_t;
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typedef DWORD my_thread_t;
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typedef struct thread_attr
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{
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DWORD dwStackSize;
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int detachstate;
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} my_thread_attr_t;
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#define MY_THREAD_CREATE_JOINABLE 0
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#define MY_THREAD_CREATE_DETACHED 1
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typedef void * (__cdecl *my_start_routine)(void *);
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#define MY_THREAD_ONCE_INIT 0
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#define MY_THREAD_ONCE_INPROGRESS 1
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#define MY_THREAD_ONCE_DONE 2
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#else
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typedef pthread_once_t my_thread_once_t;
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typedef pthread_t my_thread_t;
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typedef pthread_attr_t my_thread_attr_t;
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#define MY_THREAD_CREATE_JOINABLE PTHREAD_CREATE_JOINABLE
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#define MY_THREAD_CREATE_DETACHED PTHREAD_CREATE_DETACHED
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typedef void *(* my_start_routine)(void *);
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#define MY_THREAD_ONCE_INIT PTHREAD_ONCE_INIT
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#endif
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typedef struct st_my_thread_handle
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{
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my_thread_t thread;
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#ifdef _WIN32
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HANDLE handle;
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#endif
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} my_thread_handle;
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int my_thread_once(my_thread_once_t *once_control, void (*init_routine)(void));
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static inline my_thread_t my_thread_self()
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{
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#ifdef _WIN32
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return GetCurrentThreadId();
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#else
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return pthread_self();
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#endif
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}
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static inline int my_thread_equal(my_thread_t t1, my_thread_t t2)
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{
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#ifdef _WIN32
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return t1 == t2;
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#else
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return pthread_equal(t1, t2);
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#endif
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}
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static inline int my_thread_attr_init(my_thread_attr_t *attr)
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{
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#ifdef _WIN32
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attr->dwStackSize= 0;
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/* Set to joinable by default to match Linux */
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attr->detachstate= MY_THREAD_CREATE_JOINABLE;
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return 0;
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#else
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return pthread_attr_init(attr);
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#endif
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}
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static inline int my_thread_attr_destroy(my_thread_attr_t *attr)
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{
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#ifdef _WIN32
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attr->dwStackSize= 0;
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/* Set to joinable by default to match Linux */
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attr->detachstate= MY_THREAD_CREATE_JOINABLE;
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return 0;
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#else
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return pthread_attr_destroy(attr);
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#endif
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}
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static inline int my_thread_attr_setstacksize(my_thread_attr_t *attr,
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size_t stacksize)
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{
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#ifdef _WIN32
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attr->dwStackSize= (DWORD)stacksize;
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return 0;
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#else
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return pthread_attr_setstacksize(attr, stacksize);
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#endif
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}
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static inline int my_thread_attr_setdetachstate(my_thread_attr_t *attr,
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int detachstate)
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{
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#ifdef _WIN32
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attr->detachstate= detachstate;
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return 0;
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#else
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return pthread_attr_setdetachstate(attr, detachstate);
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#endif
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}
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static inline int my_thread_attr_getstacksize(my_thread_attr_t *attr,
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size_t *stacksize)
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{
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#ifdef _WIN32
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*stacksize= (size_t)attr->dwStackSize;
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return 0;
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#else
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return pthread_attr_getstacksize(attr, stacksize);
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#endif
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}
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static inline void my_thread_yield()
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{
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#ifdef _WIN32
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SwitchToThread();
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#else
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sched_yield();
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#endif
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}
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int my_thread_create(my_thread_handle *thread, const my_thread_attr_t *attr,
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my_start_routine func, void *arg);
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int my_thread_join(my_thread_handle *thread, void **value_ptr);
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int my_thread_cancel(my_thread_handle *thread);
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void my_thread_exit(void *value_ptr);
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extern my_bool my_thread_global_init();
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extern void my_thread_global_reinit();
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extern void my_thread_global_end();
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extern my_bool my_thread_init();
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extern void my_thread_end();
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C_MODE_END
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#endif /* MY_THREAD_INCLUDED */
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