blob: 23ddf89ed8f35eaf6d80edfa214e8a697f349b9d (
plain)
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
|
require_relative '../../spec_helper'
describe "File#flock" do
before :each do
ScratchPad.record []
@name = tmp("flock_test")
touch(@name)
@file = File.open @name, "w+"
end
after :each do
@file.flock File::LOCK_UN
@file.close
rm_r @name
end
it "exclusively locks a file" do
@file.flock(File::LOCK_EX).should == 0
@file.flock(File::LOCK_UN).should == 0
end
it "non-exclusively locks a file" do
@file.flock(File::LOCK_SH).should == 0
@file.flock(File::LOCK_UN).should == 0
end
it "returns false if trying to lock an exclusively locked file" do
@file.flock File::LOCK_EX
ruby_exe(<<-END_OF_CODE).should == "false"
File.open('#{@name}', "w") do |f2|
print f2.flock(File::LOCK_EX | File::LOCK_NB).to_s
end
END_OF_CODE
end
it "blocks if trying to lock an exclusively locked file" do
@file.flock File::LOCK_EX
out = ruby_exe(<<-END_OF_CODE)
running = false
t = Thread.new do
File.open('#{@name}', "w") do |f2|
puts "before"
running = true
f2.flock(File::LOCK_EX)
puts "after"
end
end
Thread.pass until running
Thread.pass while t.status and t.status != "sleep"
sleep 0.1
t.kill
t.join
END_OF_CODE
out.should == "before\n"
end
it "returns 0 if trying to lock a non-exclusively locked file" do
@file.flock File::LOCK_SH
File.open(@name, "r") do |f2|
f2.flock(File::LOCK_SH | File::LOCK_NB).should == 0
f2.flock(File::LOCK_UN).should == 0
end
end
end
|
