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bindings/go: keep futures alive on use

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This commit is contained in:
Amir Abu Shareb 2019-04-03 18:47:18 +03:00
parent 375955f0f4
commit d6a4a0a0bb
1 changed files with 26 additions and 10 deletions
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36
bindings/go/src/fdb/futures.go
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@ -100,15 +100,18 @@ func fdb_future_block_until_ready(f *C.FDBFuture) {
m.Lock()
}
func (f future) BlockUntilReady() {
func (f *future) BlockUntilReady() {
defer runtime.KeepAlive(f)
fdb_future_block_until_ready(f.ptr)
}
func (f future) IsReady() bool {
func (f *future) IsReady() bool {
defer runtime.KeepAlive(f)
return C.fdb_future_is_ready(f.ptr) != 0
}
func (f future) Cancel() {
func (f *future) Cancel() {
defer runtime.KeepAlive(f)
C.fdb_future_cancel(f.ptr)
}
@ -140,6 +143,8 @@ type futureByteSlice struct {
func (f *futureByteSlice) Get() ([]byte, error) {
f.o.Do(func() {
defer runtime.KeepAlive(f.future)
var present C.fdb_bool_t
var value *C.uint8_t
var length C.int
@ -195,6 +200,8 @@ type futureKey struct {
func (f *futureKey) Get() (Key, error) {
f.o.Do(func() {
defer runtime.KeepAlive(f.future)
var value *C.uint8_t
var length C.int
@ -241,7 +248,9 @@ type futureNil struct {
*future
}
func (f futureNil) Get() error {
func (f *futureNil) Get() error {
defer runtime.KeepAlive(f.future)
f.BlockUntilReady()
if err := C.fdb_future_get_error(f.ptr); err != 0 {
return Error{int(err)}
@ -250,7 +259,7 @@ func (f futureNil) Get() error {
return nil
}
func (f futureNil) MustGet() {
func (f *futureNil) MustGet() {
if err := f.Get(); err != nil {
panic(err)
}
@ -272,7 +281,9 @@ func stringRefToSlice(ptr unsafe.Pointer) []byte {
return C.GoBytes(src, size)
}
func (f futureKeyValueArray) Get() ([]KeyValue, bool, error) {
func (f *futureKeyValueArray) Get() ([]KeyValue, bool, error) {
defer runtime.KeepAlive(f.future)
f.BlockUntilReady()
var kvs *C.FDBKeyValue
@ -316,17 +327,20 @@ type futureInt64 struct {
*future
}
func (f futureInt64) Get() (int64, error) {
func (f *futureInt64) Get() (int64, error) {
defer runtime.KeepAlive(f.future)
f.BlockUntilReady()
var ver C.int64_t
if err := C.fdb_future_get_version(f.ptr, &ver); err != 0 {
return 0, Error{int(err)}
}
return int64(ver), nil
}
func (f futureInt64) MustGet() int64 {
func (f *futureInt64) MustGet() int64 {
val, err := f.Get()
if err != nil {
panic(err)
@ -356,7 +370,9 @@ type futureStringSlice struct {
*future
}
func (f futureStringSlice) Get() ([]string, error) {
func (f *futureStringSlice) Get() ([]string, error) {
defer runtime.KeepAlive(f.future)
f.BlockUntilReady()
var strings **C.char
@ -375,7 +391,7 @@ func (f futureStringSlice) Get() ([]string, error) {
return ret, nil
}
func (f futureStringSlice) MustGet() []string {
func (f *futureStringSlice) MustGet() []string {
val, err := f.Get()
if err != nil {
panic(err)