mariadb/storage/innobase/include/sync0policy.ic

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/******************************************************************//**
@file include/sync0policy.ic
Policy for mutexes.

Created 2012-08-21 Sunny Bains.
***********************************************************************/

#include "sync0debug.h"

template <typename Mutex>
std::string GenericPolicy<Mutex>::to_string() const
{
	return(sync_mutex_to_string(get_id(), sync_file_created_get(this)));
}

template <typename Mutex>
std::string BlockMutexPolicy<Mutex>::to_string() const
{
	/* I don't think it makes sense to keep track of the file name
	and line number for each block mutex. Too much of overhead. Use the
	latch id to figure out the location from the source. */
	return(sync_mutex_to_string(get_id(), "buf0buf.cc:0"));
}

#ifdef UNIV_DEBUG

template <typename Mutex>
void MutexDebug<Mutex>::init(latch_id_t id)
	UNIV_NOTHROW
{
	m_context.m_id = id;

	m_context.release();

	m_magic_n = MUTEX_MAGIC_N;
}

template <typename Mutex>
void MutexDebug<Mutex>::enter(
	const Mutex*	mutex,
	const char*	name,
	unsigned	line)
	UNIV_NOTHROW
{
	ut_ad(!is_owned());

	Context	context(m_context.get_id());

	context.locked(mutex, name, line);

	/* Check for latch order violation. */

	sync_check_lock_validate(&context);
}

template <typename Mutex>
void MutexDebug<Mutex>::locked(
	const Mutex*	mutex,
	const char*	name,
	unsigned	line)
	UNIV_NOTHROW
{
	ut_ad(!is_owned());
	ut_ad(m_context.m_thread_id == ULINT_UNDEFINED);

	m_context.locked(mutex, name, line);

	sync_check_lock_granted(&m_context);
}

template <typename Mutex>
void MutexDebug<Mutex>::release(const Mutex*)
	UNIV_NOTHROW
{
	ut_ad(is_owned());

	m_context.release();

	sync_check_unlock(&m_context);
}

#endif /* UNIV_DEBUG */