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Use global variable for better performance.

This commit is contained in:
Xu Xinran 2017-06-14 21:22:40 +08:00
parent 308f5f1b2f
commit 3fa7ed2176
1 changed files with 4 additions and 3 deletions
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7
sqlite3.go
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@ -734,6 +734,8 @@ type bindArg struct {
v driver.Value
}
var placeHolder byte = 0
func (s *SQLiteStmt) bind(args []namedValue) error {
rv := C.sqlite3_reset(s.s)
if rv != C.SQLITE_ROW && rv != C.SQLITE_OK && rv != C.SQLITE_DONE {
@ -755,8 +757,7 @@ func (s *SQLiteStmt) bind(args []namedValue) error {
rv = C.sqlite3_bind_null(s.s, n)
case string:
if len(v) == 0 {
b := []byte{0}
rv = C._sqlite3_bind_text(s.s, n, (*C.char)(unsafe.Pointer(&b[0])), C.int(0))
rv = C._sqlite3_bind_text(s.s, n, (*C.char)(unsafe.Pointer(&placeHolder)), C.int(0))
} else {
b := []byte(v)
rv = C._sqlite3_bind_text(s.s, n, (*C.char)(unsafe.Pointer(&b[0])), C.int(len(b)))
@ -774,7 +775,7 @@ func (s *SQLiteStmt) bind(args []namedValue) error {
case []byte:
var ptr *byte
if len(v) == 0 {
ptr = &(make([]byte, 1)[0])
ptr = &placeHolder
} else {
ptr = &v[0]
}