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fix #1969

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On a 32-bit architecture, 64-bit atomic loads and stores must be aligned to a
64-bit boundary. Since the (mysql.MySQL) struct is directly included in the
Server struct, it is impossible to guarantee this via the standard technique
of putting the 64-bit value at the beginning of the struct definition
(since the point at which it is included in the parent struct may cross a
64-bit boundary).

This optimization is probably pointless anyway, adding an additional
indirection won't make a difference.
This commit is contained in:
Shivaram Lingamneni 2022-06-10 10:35:56 -04:00
parent 810ec75f95
commit 69448b13a1
1 changed files with 4 additions and 3 deletions
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7
irc/mysql/history.go
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@ -45,7 +45,7 @@ const (
type e struct{}
type MySQL struct {
timeout int64
timeout *int64
trackAccountMessages uint32
db *sql.DB
logger *logger.Manager
@ -63,13 +63,14 @@ type MySQL struct {
}
func (mysql *MySQL) Initialize(logger *logger.Manager, config Config) {
mysql.timeout = new(int64)
mysql.logger = logger
mysql.wakeForgetter = make(chan e, 1)
mysql.SetConfig(config)
}
func (mysql *MySQL) SetConfig(config Config) {
atomic.StoreInt64(&mysql.timeout, int64(config.Timeout))
atomic.StoreInt64(mysql.timeout, int64(config.Timeout))
var trackAccountMessages uint32
if config.TrackAccountMessages {
trackAccountMessages = 1
@ -554,7 +555,7 @@ func (mysql *MySQL) prepareStatements() (err error) {
}
func (mysql *MySQL) getTimeout() time.Duration {
return time.Duration(atomic.LoadInt64(&mysql.timeout))
return time.Duration(atomic.LoadInt64(mysql.timeout))
}
func (mysql *MySQL) isTrackingAccountMessages() bool {