1 | module os |
2 | |
3 | fn signal_str(signal Signal) string { |
4 | mut result := signal.str().to_upper() |
5 | result = 'SIG${result}' |
6 | return result |
7 | } |
8 | |
9 | fn signal_from_str(str JS.String) Signal { |
10 | s := string(str) |
11 | return match s { |
12 | 'SIGHUP' { |
13 | Signal.hup |
14 | } |
15 | 'SIGINT' { |
16 | Signal.int |
17 | } |
18 | 'SIGQUIT' { |
19 | Signal.quit |
20 | } |
21 | 'SIGILL' { |
22 | Signal.ill |
23 | } |
24 | 'SIGTRAP' { |
25 | Signal.trap |
26 | } |
27 | 'SIGABRT' { |
28 | Signal.abrt |
29 | } |
30 | 'SIGBUS' { |
31 | Signal.bus |
32 | } |
33 | 'SIGFPE' { |
34 | Signal.fpe |
35 | } |
36 | 'SIGKILL' { |
37 | Signal.kill |
38 | } |
39 | 'SIGUSR1' { |
40 | Signal.usr1 |
41 | } |
42 | 'SIGSEGV' { |
43 | Signal.segv |
44 | } |
45 | 'SIGUSR2' { |
46 | Signal.usr2 |
47 | } |
48 | 'SIGPIPE' { |
49 | Signal.pipe |
50 | } |
51 | 'SIGALRM' { |
52 | Signal.alrm |
53 | } |
54 | 'SIGTERM' { |
55 | Signal.term |
56 | } |
57 | 'SIGSTKFLT' { |
58 | Signal.stkflt |
59 | } |
60 | 'SIGCHLD' { |
61 | Signal.chld |
62 | } |
63 | 'SIGCONT' { |
64 | Signal.cont |
65 | } |
66 | 'SIGSTOP' { |
67 | Signal.stop |
68 | } |
69 | 'SIGTSTP' { |
70 | Signal.tstp |
71 | } |
72 | 'SIGTTIN' { |
73 | Signal.ttin |
74 | } |
75 | 'SIGTTOU' { |
76 | Signal.ttou |
77 | } |
78 | 'SIGURG' { |
79 | Signal.urg |
80 | } |
81 | 'SIGXCPU' { |
82 | Signal.xcpu |
83 | } |
84 | 'SIGXFSZ' { |
85 | Signal.xfsz |
86 | } |
87 | 'SIGVTALRM' { |
88 | Signal.vtalrm |
89 | } |
90 | 'SIGPROF' { |
91 | Signal.prof |
92 | } |
93 | 'SIGWINCH' { |
94 | Signal.winch |
95 | } |
96 | 'SIGPOLL' { |
97 | Signal.poll |
98 | } |
99 | 'SIGPWR' { |
100 | Signal.pwr |
101 | } |
102 | 'SIGSYS' { |
103 | Signal.sys |
104 | } |
105 | else { |
106 | panic('unknown signal: ${s}') |
107 | } |
108 | } |
109 | } |
110 | |
111 | // signal will assign `handler` callback to be called when `signum` signal is received. |
112 | // |
113 | // # Behaviour on different backends: |
114 | // - NodeJS: Will use `process.on` and add `handler` to the listeners list for `signum` to happen |
115 | // - Browser: Will use `window.addEventListener` for handling signal |
116 | // |
117 | // TODO: Add signal events implementation for browser backend |
118 | pub fn signal_opt(signum Signal, handler SignalHandler) !SignalHandler { |
119 | signame := signal_str(signum) |
120 | _ := signame |
121 | $if js_node { |
122 | #$process.on(signame.str,function (sig) { handler(os__signal_from_str(sig));}); |
123 | |
124 | return handler |
125 | } $else $if js_browser { |
126 | #let event = new CustomEvent(signame.str, {detail: signum}); |
127 | #window.addEventListener(signame.str, function (e) { handler(e.detail); }); |
128 | |
129 | return handler |
130 | } $else { |
131 | return error('signal handlers are not supported on bare JS') |
132 | } |
133 | } |