enfync 0.1.6

Environment-friendly async utilities
Documentation 
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177

#[cfg(target_family = "wasm")]
wasm_bindgen_test::wasm_bindgen_test_configure!(run_in_browser);

//local shortcuts

//third-party shortcuts
#[cfg(not(target_family = "wasm"))]
use enfync::Handle;

//standard shortcuts


//-------------------------------------------------------------------------------------------------------------------
//-------------------------------------------------------------------------------------------------------------------

fn print_dbg(s: &str)
{
    #[cfg(not(target_family = "wasm"))]
    dbg!(s);

    #[cfg(target_family = "wasm")]
    web_sys::console::log_1(&s.into());
}

//-------------------------------------------------------------------------------------------------------------------
//-------------------------------------------------------------------------------------------------------------------

async fn basic_try_extract(handle: impl enfync::Handle)
{
    // make task
    print_dbg("test: basic_try_extract");
    let val = 10;
    let task = async move { print_dbg("task ran"); val };

    // spawn task
    print_dbg("test: basic_try_extract... spawning");
    let mut pending_result = handle.spawn(task);

    // wait for async machinery
    print_dbg("test: basic_try_extract... sleeping");
    enfync::sleep(std::time::Duration::from_millis(15)).await;

    // task should be done
    assert!(pending_result.done());

    // wait for task
    print_dbg("test: basic_try_extract... extracting");
    let Some(Ok(res)) = pending_result.try_extract() else { panic!(""); };
    assert_eq!(res, val);
}

//-------------------------------------------------------------------------------------------------------------------

fn sync_try_extract(handle: impl enfync::Handle)
{
    // make task
    print_dbg("test: sync_try_extract");
    let val = 10;
    let task = async move { enfync::sleep(std::time::Duration::from_millis(25)).await; print_dbg("task ran"); val };

    // spawn task
    print_dbg("test: sync_try_extract... spawning");
    let mut pending_result = handle.spawn(task);

    // wait for async machinery
    print_dbg("test: sync_try_extract... sleeping");
    std::thread::sleep(std::time::Duration::from_millis(50));

    // task should be done
    assert!(pending_result.done());

    // wait for task
    print_dbg("test: sync_try_extract... extracting");
    let Some(Ok(res)) = pending_result.try_extract() else { panic!(""); };
    assert_eq!(res, val);
}

//-------------------------------------------------------------------------------------------------------------------

async fn basic_extract(handle: impl enfync::Handle)
{
    // make task
    print_dbg("test: basic_extract");
    let val = 10;
    let task = async move { print_dbg("task ran"); val };

    // spawn task
    print_dbg("test: basic_extract... spawning");
    let mut pending_result = handle.spawn(task);

    // wait for the result
    print_dbg("test: basic_extract... waiting");
    let Ok(res) = pending_result.extract().await else { panic!(""); };
    assert_eq!(res, val);
}

//-------------------------------------------------------------------------------------------------------------------

async fn basic_nesting(handle: impl enfync::Handle)
{
    // make task
    print_dbg("test: basic_nesting");
    let val = 10;
    let task = async move { print_dbg("task ran"); val };

    // spawn task
    print_dbg("test: basic_nesting... spawning");
    let mut pending_result = handle.spawn(task);

    // make new task waiting for other task
    print_dbg("test: basic_nesting... new task");
    let mut pending_result = handle.spawn(async move { pending_result.extract().await });

    print_dbg("test: basic_nesting... waiting");
    let Ok(Ok(res)) = pending_result.extract().await else { panic!(""); };
    assert_eq!(res, val);
}

//-------------------------------------------------------------------------------------------------------------------

async fn test_suite_impl(handle: impl enfync::Handle)
{
    basic_try_extract(handle.clone()).await;
    basic_extract(handle.clone()).await;
    basic_nesting(handle.clone()).await;
}

//-------------------------------------------------------------------------------------------------------------------

async fn test_suite()
{
    print_dbg("test suite");
    test_suite_impl(enfync::builtin::Handle::default()).await;
}

//-------------------------------------------------------------------------------------------------------------------

#[cfg(not(target_family = "wasm"))]
#[test]
fn test_core_native()
{
    let io_handle = enfync::builtin::Handle::default();

    // test try_extract in sync context
    sync_try_extract(io_handle.clone());

    // test blocking extract
    let val = 10;
    let task = async move { val };
    let pending_result = io_handle.spawn(task);
    std::thread::sleep(std::time::Duration::from_millis(5));
    assert!(pending_result.done());
    let Ok(res) = enfync::blocking::extract(pending_result) else { panic!(""); };
    assert_eq!(res, val);

    // test wrapping a pending result in std::thread
    let val = 11;
    let task = async move { val };
    let mut pending_result = io_handle.spawn(task);
    let pending_result = enfync::builtin::native::CPUHandle::default().spawn(async move { pending_result.extract().await });
    let Ok(Ok(res)) = enfync::blocking::extract(pending_result) else { panic!(""); };
    assert_eq!(res, val);

    // test suite
    let Ok(()) = enfync::blocking::extract(io_handle.spawn( async { test_suite().await; })) else { panic!(""); };
}

//-------------------------------------------------------------------------------------------------------------------

#[cfg(target_family = "wasm")]
#[wasm_bindgen_test::wasm_bindgen_test]
async fn test_core_wasm()
{
    test_suite().await;
}

//-------------------------------------------------------------------------------------------------------------------