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
|
{% skip_file if flag?(:wasm32) %}
require "./spec_helper"
require "signal"
# interpreted code never receives signals (#12241)
pending_interpreted describe: "Signal" do
typeof(Signal::ABRT.reset)
typeof(Signal::ABRT.ignore)
typeof(Signal::ABRT.trap { 1 })
it "has constants required by C" do
Signal::INT.should be_a(Signal)
Signal::ILL.should be_a(Signal)
Signal::FPE.should be_a(Signal)
Signal::SEGV.should be_a(Signal)
Signal::TERM.should be_a(Signal)
Signal::ABRT.should be_a(Signal)
end
{% unless flag?(:win32) %}
it "runs a signal handler" do
ran = false
Signal::USR1.trap do
ran = true
end
Process.signal Signal::USR1, Process.pid
10.times do |i|
break if ran
sleep 0.1.seconds
end
ran.should be_true
ensure
Signal::USR1.reset
end
it "ignores a signal" do
Signal::USR2.ignore
Process.signal Signal::USR2, Process.pid
end
it "allows chaining of signals" do
ran_first = false
ran_second = false
Signal::USR1.trap { ran_first = true }
existing = Signal::USR1.trap_handler?
Signal::USR1.trap do |signal|
existing.try &.call(signal)
ran_second = true
end
Process.signal Signal::USR1, Process.pid
sleep 0.1.seconds
ran_first.should be_true
ran_second.should be_true
ensure
Signal::USR1.reset
end
it "CHLD.reset sets default Crystal child handler" do
Signal::CHLD.reset
child = Process.new("true", shell: true)
child.wait # doesn't block forever
end
it "CHLD.ignore sets default Crystal child handler" do
Signal::CHLD.ignore
child = Process.new("true", shell: true)
child.wait # doesn't block forever
end
it "CHLD.trap is called after default Crystal child handler" do
chan = Channel(Process).new
existed = Channel(Bool).new
Signal::CHLD.trap do
child_process = chan.receive
existed.send(Process.exists?(child_process.pid))
end
child = Process.new("true", shell: true)
child.wait # doesn't block forever
chan.send(child)
existed.receive.should be_false
ensure
Signal::CHLD.reset
end
it "CHLD.reset removes previously set trap" do
call_count = 0
Signal::CHLD.trap do
call_count += 1
end
Process.new("true", shell: true).wait
Fiber.yield
call_count.should eq(1)
Signal::CHLD.reset
Process.new("true", shell: true).wait
Fiber.yield
call_count.should eq(1)
end
# TODO: test Signal::X.reset
{% end %}
end
|
