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| Current File : //usr/include/mysql/my_thread.h |
/* Copyright (c) 2000, 2016, 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 Street, Fifth Floor, Boston, MA 02110-1301, USA */
/* Defines to make different thread packages compatible */
#ifndef MY_THREAD_INCLUDED
#define MY_THREAD_INCLUDED
#include "my_global.h" /* my_bool */
#if !defined(_WIN32)
#include <pthread.h>
#endif
#ifndef ETIME
#define ETIME ETIMEDOUT /* For FreeBSD */
#endif
#ifndef ETIMEDOUT
#define ETIMEDOUT 145 /* Win32 doesn't have this */
#endif
/*
MySQL can survive with 32K, but some glibc libraries require > 128K stack
To resolve hostnames. Also recursive stored procedures needs stack.
*/
#if defined(__sparc) && (defined(__SUNPRO_CC) || defined(__SUNPRO_C))
#define STACK_MULTIPLIER 2UL
#else
#define STACK_MULTIPLIER 1UL
#endif
#if SIZEOF_CHARP > 4
#define DEFAULT_THREAD_STACK (STACK_MULTIPLIER * 256UL * 1024UL)
#else
#define DEFAULT_THREAD_STACK (STACK_MULTIPLIER * 192UL * 1024UL)
#endif
#ifdef __cplusplus
#define EXTERNC extern "C"
#else
#define EXTERNC
#endif
C_MODE_START
#ifdef _WIN32
typedef volatile LONG my_thread_once_t;
typedef DWORD my_thread_t;
typedef struct thread_attr
{
DWORD dwStackSize;
int detachstate;
} my_thread_attr_t;
#define MY_THREAD_CREATE_JOINABLE 0
#define MY_THREAD_CREATE_DETACHED 1
typedef void * (__cdecl *my_start_routine)(void *);
#define MY_THREAD_ONCE_INIT 0
#define MY_THREAD_ONCE_INPROGRESS 1
#define MY_THREAD_ONCE_DONE 2
#else
typedef pthread_once_t my_thread_once_t;
typedef pthread_t my_thread_t;
typedef pthread_attr_t my_thread_attr_t;
#define MY_THREAD_CREATE_JOINABLE PTHREAD_CREATE_JOINABLE
#define MY_THREAD_CREATE_DETACHED PTHREAD_CREATE_DETACHED
typedef void *(* my_start_routine)(void *);
#define MY_THREAD_ONCE_INIT PTHREAD_ONCE_INIT
#endif
typedef struct st_my_thread_handle
{
my_thread_t thread;
#ifdef _WIN32
HANDLE handle;
#endif
} my_thread_handle;
int my_thread_once(my_thread_once_t *once_control, void (*init_routine)(void));
static inline my_thread_t my_thread_self()
{
#ifdef _WIN32
return GetCurrentThreadId();
#else
return pthread_self();
#endif
}
static inline int my_thread_equal(my_thread_t t1, my_thread_t t2)
{
#ifdef _WIN32
return t1 == t2;
#else
return pthread_equal(t1, t2);
#endif
}
static inline int my_thread_attr_init(my_thread_attr_t *attr)
{
#ifdef _WIN32
attr->dwStackSize= 0;
/* Set to joinable by default to match Linux */
attr->detachstate= MY_THREAD_CREATE_JOINABLE;
return 0;
#else
return pthread_attr_init(attr);
#endif
}
static inline int my_thread_attr_destroy(my_thread_attr_t *attr)
{
#ifdef _WIN32
attr->dwStackSize= 0;
/* Set to joinable by default to match Linux */
attr->detachstate= MY_THREAD_CREATE_JOINABLE;
return 0;
#else
return pthread_attr_destroy(attr);
#endif
}
static inline int my_thread_attr_setstacksize(my_thread_attr_t *attr,
size_t stacksize)
{
#ifdef _WIN32
attr->dwStackSize= (DWORD)stacksize;
return 0;
#else
return pthread_attr_setstacksize(attr, stacksize);
#endif
}
static inline int my_thread_attr_setdetachstate(my_thread_attr_t *attr,
int detachstate)
{
#ifdef _WIN32
attr->detachstate= detachstate;
return 0;
#else
return pthread_attr_setdetachstate(attr, detachstate);
#endif
}
static inline int my_thread_attr_getstacksize(my_thread_attr_t *attr,
size_t *stacksize)
{
#ifdef _WIN32
*stacksize= (size_t)attr->dwStackSize;
return 0;
#else
return pthread_attr_getstacksize(attr, stacksize);
#endif
}
static inline void my_thread_yield()
{
#ifdef _WIN32
SwitchToThread();
#else
sched_yield();
#endif
}
int my_thread_create(my_thread_handle *thread, const my_thread_attr_t *attr,
my_start_routine func, void *arg);
int my_thread_join(my_thread_handle *thread, void **value_ptr);
int my_thread_cancel(my_thread_handle *thread);
void my_thread_exit(void *value_ptr);
extern my_bool my_thread_global_init();
extern void my_thread_global_reinit();
extern void my_thread_global_end();
extern my_bool my_thread_init();
extern void my_thread_end();
C_MODE_END
#endif /* MY_THREAD_INCLUDED */