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b1dcf448ea
In order to allow thread schedulers to be dynamically loaded, it is necessary to make the following changes to the server: - Two new service interfaces - Modifications to InnoDB to inform the thread scheduler of state changes. - Changes to the VIO subsystem for checking if data is available on a socket. - Elimination of remains of the old thread pool implementation. The two new service interfaces introduces are: my_thread_scheduler A service interface to register a thread scheduler. thd_wait A service interface to inform thread scheduler that the thread is about to start waiting. In addition, the patch adds code that: - Add a call to thd_wait for table locks in mysys thd_lock.c by introducing a set function that can be used to set a callback to be used when waiting on a lock and resuming from waiting. - Calling the mysys set function from the server to set the callbacks correctly.
69 lines
2.1 KiB
C
69 lines
2.1 KiB
C
#ifndef VIO_PRIV_INCLUDED
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#define VIO_PRIV_INCLUDED
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/* Copyright (C) 2003 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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/* Structures and functions private to the vio package */
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#define DONT_MAP_VIO
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#include <my_global.h>
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#include <mysql_com.h>
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#include <my_sys.h>
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#include <m_string.h>
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#include <violite.h>
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#ifndef __WIN__
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#include <sys/socket.h>
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#include <netdb.h>
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#endif
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#ifdef _WIN32
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void vio_win32_timeout(Vio *vio, uint which, uint timeout);
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#endif
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#ifdef __WIN__
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size_t vio_read_pipe(Vio *vio, uchar * buf, size_t size);
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size_t vio_write_pipe(Vio *vio, const uchar * buf, size_t size);
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my_bool vio_is_connected_pipe(Vio *vio);
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int vio_close_pipe(Vio * vio);
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#endif
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#ifdef HAVE_SMEM
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size_t vio_read_shared_memory(Vio *vio, uchar * buf, size_t size);
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size_t vio_write_shared_memory(Vio *vio, const uchar * buf, size_t size);
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my_bool vio_is_connected_shared_memory(Vio *vio);
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int vio_close_shared_memory(Vio * vio);
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#endif
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void vio_timeout(Vio *vio,uint which, uint timeout);
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my_bool vio_buff_has_data(Vio *vio);
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#ifdef HAVE_OPENSSL
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#include "my_net.h" /* needed because of struct in_addr */
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size_t vio_ssl_read(Vio *vio,uchar* buf, size_t size);
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size_t vio_ssl_write(Vio *vio,const uchar* buf, size_t size);
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/* When the workday is over... */
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int vio_ssl_close(Vio *vio);
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void vio_ssl_delete(Vio *vio);
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int vio_ssl_blocking(Vio *vio, my_bool set_blocking_mode, my_bool *old_mode);
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my_bool vio_ssl_has_data(Vio *vio);
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#endif /* HAVE_OPENSSL */
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#endif /* VIO_PRIV_INCLUDED */
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