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asyncio: improve performance by scheduling last frame

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This commit is contained in:
Li Jie
2024-07-25 10:49:02 +08:00
parent f2e15a6846
commit a4286dbd4b
3 changed files with 56 additions and 75 deletions
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72
x/io/_demo/asyncdemo/async.go
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@@ -15,15 +15,11 @@ import (
type Response struct {
StatusCode int
mockBody string
}
func (r *Response) mock(body string) {
r.mockBody = body
Body string
}
func (r *Response) Text() (resolve io.Promise[string]) {
resolve(r.mockBody, nil)
resolve(r.Body, nil)
return
}
@@ -32,10 +28,10 @@ func (r *Response) TextCompiled() *io.PromiseImpl[string] {
P.Debug = "Text"
P.Func = func(resolve func(string, error)) {
for {
switch P.Prev = P.Next; P.Prev {
switch P.Next {
case 0:
P.Next = -1
resolve(r.mockBody, nil)
resolve(r.Body, nil)
return
default:
panic("Promise already done")
@@ -55,7 +51,7 @@ func Http(method string, url string, callback func(resp *Response, err error)) {
body = "99.5"
}
time.Sleep(200 * time.Millisecond)
resp := &Response{StatusCode: 200, mockBody: body}
resp := &Response{StatusCode: 200, Body: body}
callback(resp, nil)
}()
}
@@ -70,7 +66,7 @@ func AsyncHttpGetCompiled(url string) *io.PromiseImpl[*Response] {
P.Debug = "HttpGet"
P.Func = func(resolve func(*Response, error)) {
for {
switch P.Prev = P.Next; P.Prev {
switch P.Next {
case 0:
P.Next = -1
Http("GET", url, resolve)
@@ -93,7 +89,7 @@ func AsyncHttpPostCompiled(url string) *io.PromiseImpl[*Response] {
P.Debug = "HttpPost"
P.Func = func(resolve func(*Response, error)) {
for {
switch P.Prev = P.Next; P.Prev {
switch P.Next {
case 0:
P.Next = -1
Http("POST", url, resolve)
@@ -147,18 +143,15 @@ func GetUserCompiled(name string) *io.PromiseImpl[User] {
P.Debug = "GetUser"
P.Func = func(resolve func(User, error)) {
for {
switch P.Prev = P.Next; P.Prev {
switch P.Next {
case 0:
P.Next = 1
state1 = AsyncHttpGetCompiled("http://example.com/user/" + name)
state1.Exec = P.Exec
state1.Parent = P
state1.Call()
return
case 1:
if !state1.Done() {
state1.Call()
return
}
P.Next = 2
resp, err := state1.Value, state1.Err
log.Printf("resp: %v, err: %v\n", resp, err)
@@ -174,14 +167,11 @@ func GetUserCompiled(name string) *io.PromiseImpl[User] {
state2 = resp.TextCompiled()
state2.Exec = P.Exec
state2.Parent = P
state2.Call()
log.Printf("TextCompiled state2: %v\n", state2)
return
case 2:
if !state2.Done() {
state2.Call()
return
}
P.Next = -1
body, err := state2.Value, state2.Err
if err != nil {
@@ -240,18 +230,15 @@ func GetScoreCompiled() *io.PromiseImpl[float64] {
P.Debug = "GetScore"
P.Func = func(resolve func(float64, error)) {
for {
switch P.Prev = P.Next; P.Prev {
switch P.Next {
case 0:
P.Next = 1
state1 = AsyncHttpGetCompiled("http://example.com/score/")
state1.Exec = P.Exec
state1.Parent = P
state1.Call()
return
case 1:
if !state1.Done() {
state1.Call()
return
}
P.Next = 2
resp, err := state1.Value, state1.Err
if err != nil {
@@ -266,14 +253,11 @@ func GetScoreCompiled() *io.PromiseImpl[float64] {
state2 = resp.TextCompiled()
state2.Exec = P.Exec
state2.Parent = P
state2.Call()
return
case 2:
if !state2.Done() {
state2.Call()
return
}
P.Next = -1
body, err := state2.Value, state2.Err
if err != nil {
@@ -319,18 +303,15 @@ func DoUpdateCompiled(op string) *io.PromiseImpl[io.Void] {
P.Debug = "DoUpdate"
P.Func = func(resolve func(io.Void, error)) {
for {
switch P.Prev = P.Next; P.Prev {
switch P.Next {
case 0:
P.Next = 1
state1 = AsyncHttpPostCompiled("http://example.com/update/" + op)
state1.Exec = P.Exec
state1.Parent = P
state1.Call()
return
case 1:
if !state1.Done() {
state1.Call()
return
}
P.Next = -1
resp, err := state1.Value, state1.Err
if err != nil {
@@ -388,18 +369,15 @@ func DemoCompiled() *io.PromiseImpl[io.Void] {
P.Debug = "Demo"
P.Func = func(resolve func(io.Void, error)) {
for {
switch P.Prev = P.Next; P.Prev {
switch P.Next {
case 0:
P.Next = 1
state1 = GetUserCompiled("1")
state1.Exec = P.Exec
state1.Parent = P
state1.Call()
return
case 1:
if !state1.Done() {
state1.Call()
return
}
P.Next = 2
user, err := state1.Value, state1.Err
log.Printf("user: %v, err: %v\n", user, err)
@@ -407,14 +385,10 @@ func DemoCompiled() *io.PromiseImpl[io.Void] {
state2 = io.Race[User](GetUserCompiled("2"), GetUserCompiled("3"), GetUserCompiled("4"))
log.Printf("state2: %v\n", state2)
state2.Exec = P.Exec
state2.Parent = P
state2.Call()
return
case 2:
if !state2.Done() {
state2.Call()
return
}
log.Printf("case 2, state2: %+v\n", state2)
P.Next = 3
@@ -424,13 +398,10 @@ func DemoCompiled() *io.PromiseImpl[io.Void] {
state3 = io.All[User]([]io.AsyncCall[User]{GetUserCompiled("5"), GetUserCompiled("6"), GetUserCompiled("7")})
log.Printf("state3: %v\n", state3)
state3.Exec = P.Exec
state3.Parent = P
state3.Call()
return
case 3:
if !state3.Done() {
state3.Call()
return
}
P.Next = 4
users, err := state3.Value, state3.Err
@@ -439,13 +410,10 @@ func DemoCompiled() *io.PromiseImpl[io.Void] {
state4 = io.Await3Compiled[User, float64, io.Void](GetUserCompiled("8"), GetScoreCompiled(), DoUpdateCompiled("update sth."))
log.Printf("state4: %v\n", state4)
state4.Exec = P.Exec
state4.Parent = P
state4.Call()
return
case 4:
if !state4.Done() {
state4.Call()
return
}
P.Next = -1
user, score, _, err := state4.Value.V1, state4.Value.V2, state4.Value.V3, state4.Value.Err