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/*
Portions Copyright (c) 2015-Present, Facebook, Inc.
Portions Copyright (c) 2012, Monty Program Ab
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 02111-1301 USA */
#include <my_global.h>
/* The C++ file's header */
#include "./rdb_threads.h"
namespace myrocks {
void *Rdb_thread::thread_func(void *const thread_ptr) {
DBUG_ASSERT(thread_ptr != nullptr);
Rdb_thread *const thread = static_cast<Rdb_thread *>(thread_ptr);
if (!thread->m_run_once.exchange(true)) {
thread->setname();
thread->run();
thread->uninit();
}
return nullptr;
}
void Rdb_thread::init(
#ifdef HAVE_PSI_INTERFACE
my_core::PSI_mutex_key stop_bg_psi_mutex_key,
my_core::PSI_cond_key stop_bg_psi_cond_key
#endif
) {
DBUG_ASSERT(!m_run_once);
mysql_mutex_init(stop_bg_psi_mutex_key, &m_signal_mutex, MY_MUTEX_INIT_FAST);
mysql_cond_init(stop_bg_psi_cond_key, &m_signal_cond, nullptr);
}
void Rdb_thread::uninit() {
mysql_mutex_destroy(&m_signal_mutex);
mysql_cond_destroy(&m_signal_cond);
}
int Rdb_thread::create_thread(const std::string &thread_name
#ifdef HAVE_PSI_INTERFACE
,
PSI_thread_key background_psi_thread_key
#endif
) {
// Make a copy of the name so we can return without worrying that the
// caller will free the memory
m_name = thread_name;
return mysql_thread_create(background_psi_thread_key, &m_handle, nullptr,
thread_func, this);
}
void Rdb_thread::signal(const bool stop_thread) {
RDB_MUTEX_LOCK_CHECK(m_signal_mutex);
if (stop_thread) {
m_stop = true;
}
mysql_cond_signal(&m_signal_cond);
RDB_MUTEX_UNLOCK_CHECK(m_signal_mutex);
}
} // namespace myrocks
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