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
178
179
180
181
182
183
184
185
186
187
|
require_relative 'spec_helper'
require_relative '../../core/thread/shared/wakeup'
load_extension("thread")
class Thread
def self.capi_thread_specs=(t)
@@capi_thread_specs = t
end
def call_capi_rb_thread_wakeup
@@capi_thread_specs.rb_thread_wakeup(self)
end
end
describe "C-API Thread function" do
before :each do
@t = CApiThreadSpecs.new
ScratchPad.clear
Thread.capi_thread_specs = @t
end
describe "rb_thread_wait_for" do
it "sleeps the current thread for the give amount of time" do
start = Time.now
@t.rb_thread_wait_for(0, 100_000)
(Time.now - start).should be_close(0.1, TIME_TOLERANCE)
end
end
describe "rb_thread_alone" do
it "returns true if there is only one thread" do
pred = Thread.list.size == 1
@t.rb_thread_alone.should == pred
end
end
describe "rb_thread_current" do
it "equals Thread.current" do
@t.rb_thread_current.should == Thread.current
end
end
describe "rb_thread_local_aref" do
it "returns the value of a thread-local variable" do
thr = Thread.current
sym = :thread_capi_specs_aref
thr[sym] = 1
@t.rb_thread_local_aref(thr, sym).should == 1
end
it "returns nil if the value has not been set" do
@t.rb_thread_local_aref(Thread.current, :thread_capi_specs_undefined).should be_nil
end
end
describe "rb_thread_local_aset" do
it "sets the value of a thread-local variable" do
thr = Thread.current
sym = :thread_capi_specs_aset
@t.rb_thread_local_aset(thr, sym, 2).should == 2
thr[sym].should == 2
end
end
describe "rb_thread_wakeup" do
it_behaves_like :thread_wakeup, :call_capi_rb_thread_wakeup
end
describe "rb_thread_create" do
it "creates a new thread" do
obj = Object.new
proc = -> x { ScratchPad.record x }
thr = @t.rb_thread_create(proc, obj)
thr.should be_kind_of(Thread)
thr.join
ScratchPad.recorded.should == obj
end
it "handles throwing an exception in the thread" do
prc = -> x {
Thread.current.report_on_exception = false
raise "my error"
}
thr = @t.rb_thread_create(prc, nil)
thr.should be_kind_of(Thread)
-> {
thr.join
}.should raise_error(RuntimeError, "my error")
end
it "sets the thread's group" do
thr = @t.rb_thread_create(-> x { }, nil)
begin
thread_group = thr.group
thread_group.should be_an_instance_of(ThreadGroup)
ensure
thr.join
end
end
end
describe "ruby_native_thread_p" do
it "returns non-zero for a ruby thread" do
@t.ruby_native_thread_p.should be_true
end
it "returns zero for a non ruby thread" do
@t.ruby_native_thread_p_new_thread.should be_false
end
end
describe "rb_thread_call_without_gvl" do
it "runs a C function with the global lock unlocked and can be woken by Thread#wakeup" do
thr = Thread.new do
@t.rb_thread_call_without_gvl
end
# Wait until it's blocking...
Thread.pass until thr.stop?
# The thread status is set to sleep by rb_thread_call_without_gvl(),
# but the thread might not be in the blocking read(2) yet, so wait a bit.
sleep 0.1
# Wake it up, causing the unblock function to be run.
thr.wakeup
# Make sure it stopped and we got a proper value
thr.value.should be_true
end
platform_is_not :windows do
it "runs a C function with the global lock unlocked and can be woken by a signal" do
# Ruby signal handlers run on the main thread, so we need to reverse roles here and have a thread interrupt us
thr = Thread.current
thr.should == Thread.main
going_to_block = false
interrupter = Thread.new do
# Wait until it's blocking...
Thread.pass until going_to_block and thr.stop?
# The thread status is set to sleep by rb_thread_call_without_gvl(),
# but the thread might not be in the blocking read(2) yet, so wait a bit.
sleep 0.1
# Wake it up by sending a signal
done = false
prev_handler = Signal.trap(:HUP) { done = true }
begin
Process.kill :HUP, Process.pid
sleep 0.001 until done
ensure
Signal.trap(:HUP, prev_handler)
end
end
going_to_block = true
# Make sure it stopped and we got a proper value
@t.rb_thread_call_without_gvl.should be_true
interrupter.join
end
end
it "runs a C function with the global lock unlocked and unlocks IO with the generic RUBY_UBF_IO" do
thr = Thread.new do
@t.rb_thread_call_without_gvl_with_ubf_io
end
# Wait until it's blocking...
Thread.pass until thr.stop?
# The thread status is set to sleep by rb_thread_call_without_gvl(),
# but the thread might not be in the blocking read(2) yet, so wait a bit.
sleep 0.1
# Wake it up, causing the unblock function to be run.
thr.wakeup
# Make sure it stopped and we got a proper value
thr.value.should be_true
end
end
end
|
