142 lines
4.4 KiB
C++
142 lines
4.4 KiB
C++
/* Copyright (c) 2015, 2019, 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 */
|
|
|
|
#include "sql_thd_internal_api.h"
|
|
|
|
#include "mysqld_thd_manager.h" // Global_THD_manager
|
|
#include "sql_class.h" // THD
|
|
|
|
|
|
int thd_init(THD *thd, char *stack_start, bool bound, PSI_thread_key psi_key)
|
|
{
|
|
DBUG_ENTER("thd_new_connection_setup");
|
|
thd->set_time();
|
|
thd->thr_create_utime= thd->start_utime= my_micro_time();
|
|
|
|
// TODO: Purge threads currently terminate too late for them to be added.
|
|
// Note that P_S interprets all threads with thread_id != 0 as
|
|
// foreground threads. And THDs need thread_id != 0 to be added
|
|
// to the global THD list.
|
|
if (thd->system_thread != SYSTEM_THREAD_BACKGROUND)
|
|
{
|
|
thd->set_new_thread_id();
|
|
Global_THD_manager *thd_manager= Global_THD_manager::get_instance();
|
|
thd_manager->add_thd(thd);
|
|
}
|
|
#ifdef HAVE_PSI_INTERFACE
|
|
PSI_thread *psi;
|
|
psi= PSI_THREAD_CALL(new_thread)(psi_key, thd, thd->thread_id());
|
|
if (bound)
|
|
{
|
|
PSI_THREAD_CALL(set_thread_os_id)(psi);
|
|
}
|
|
PSI_THREAD_CALL(set_thread_THD)(psi, thd);
|
|
thd->set_psi(psi);
|
|
#endif
|
|
|
|
if (!thd->system_thread)
|
|
{
|
|
DBUG_PRINT("info", ("init new connection. thd: %p fd: %d",
|
|
thd, mysql_socket_getfd(
|
|
thd->get_protocol_classic()->get_vio()->mysql_socket)));
|
|
}
|
|
thd_set_thread_stack(thd, stack_start);
|
|
|
|
int retval= thd->store_globals();
|
|
DBUG_RETURN(retval);
|
|
}
|
|
|
|
|
|
THD *create_thd(bool enable_plugins, bool background_thread, bool bound, PSI_thread_key psi_key)
|
|
{
|
|
THD *thd= new THD(enable_plugins);
|
|
if (background_thread)
|
|
thd->system_thread= SYSTEM_THREAD_BACKGROUND;
|
|
(void)thd_init(thd, reinterpret_cast<char*>(&thd), bound, psi_key);
|
|
return thd;
|
|
}
|
|
|
|
|
|
void destroy_thd(THD *thd)
|
|
{
|
|
thd->release_resources();
|
|
// TODO: Purge threads currently terminate too late for them to be added.
|
|
if (thd->system_thread != SYSTEM_THREAD_BACKGROUND)
|
|
{
|
|
Global_THD_manager *thd_manager= Global_THD_manager::get_instance();
|
|
thd_manager->remove_thd(thd);
|
|
}
|
|
delete thd;
|
|
}
|
|
|
|
|
|
void thd_set_thread_stack(THD *thd, const char *stack_start)
|
|
{
|
|
thd->thread_stack= stack_start;
|
|
}
|
|
|
|
bool is_mysql_datadir_path(const char *path)
|
|
{
|
|
if (path == NULL || strlen(path) >= FN_REFLEN)
|
|
return false;
|
|
|
|
char mysql_data_dir[FN_REFLEN], path_dir[FN_REFLEN];
|
|
convert_dirname(path_dir, path, NullS);
|
|
convert_dirname(mysql_data_dir, mysql_unpacked_real_data_home, NullS);
|
|
size_t mysql_data_home_len= dirname_length(mysql_data_dir);
|
|
size_t path_len= dirname_length(path_dir);
|
|
|
|
if (path_len < mysql_data_home_len)
|
|
return true;
|
|
|
|
if (!lower_case_file_system)
|
|
return memcmp(mysql_data_dir, path_dir, mysql_data_home_len);
|
|
|
|
return files_charset_info->coll->strnncoll(files_charset_info,
|
|
reinterpret_cast<uchar*>(path_dir),
|
|
path_len,
|
|
reinterpret_cast<uchar*>(mysql_data_dir),
|
|
mysql_data_home_len,
|
|
TRUE);
|
|
}
|
|
|
|
|
|
int mysql_tmpfile_path(const char *path, const char *prefix)
|
|
{
|
|
DBUG_ASSERT(path != NULL);
|
|
DBUG_ASSERT((strlen(path) + strlen(prefix)) <= FN_REFLEN);
|
|
|
|
char filename[FN_REFLEN];
|
|
File fd = create_temp_file(filename, path, prefix,
|
|
#ifdef _WIN32
|
|
O_BINARY | O_TRUNC | O_SEQUENTIAL |
|
|
O_SHORT_LIVED |
|
|
#endif /* _WIN32 */
|
|
O_CREAT | O_EXCL | O_RDWR | O_TEMPORARY,
|
|
MYF(MY_WME));
|
|
if (fd >= 0) {
|
|
#ifndef _WIN32
|
|
/*
|
|
This can be removed once the following bug is fixed:
|
|
Bug #28903 create_temp_file() doesn't honor O_TEMPORARY option
|
|
(file not removed) (Unix)
|
|
*/
|
|
unlink(filename);
|
|
#endif /* !_WIN32 */
|
|
}
|
|
|
|
return fd;
|
|
}
|