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
|
// tls_test.cc -- test TLS variables for gold
// Copyright 2006, 2007 Free Software Foundation, Inc.
// Written by Ian Lance Taylor <iant@google.com>.
// This file is part of gold.
// This program is free software; you can redistribute it and/or modify
// it under the terms of the GNU General Public License as published by
// the Free Software Foundation; either version 3 of the License, or
// (at your option) any later version.
// This program is distributed in the hope that it will be useful,
// but WITHOUT ANY WARRANTY; without even the implied warranty of
// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
// GNU General Public License for more details.
// You should have received a copy of the GNU General Public License
// along with this program; if not, write to the Free Software
// Foundation, Inc., 51 Franklin Street - Fifth Floor, Boston,
// MA 02110-1301, USA.
// This provides a set of test functions for TLS variables. The
// functions are called by a main function in tls_test_main.cc. This
// lets us test TLS access from a shared library. We currently don't
// bother to test TLS access between two different files, on the
// theory that that is no more complicated than ordinary variable
// access between files.
// We start two threads, and stop the second one. Then we run the
// first thread through the following cases. Then we let the second
// thread continue, and run it through the same set of cases. All the
// actual thread manipulation is in tls_test_main.cc.
// 1 Access to an uninitialized global thread variable.
// 2 Access to an uninitialized static thread variable.
// 3 Access to an initialized global thread variable.
// 4 Access to an initialized static thread variable.
// 5 Taking the address of a global thread variable.
// 6 Taking the address of a static thread variable.
// 7 Verify that the above tests left the variables set correctly.
#include "tls_test.h"
__thread int v1;
static __thread int v2;
__thread int v3 = 3;
static __thread int v4 = 4;
__thread int v5;
static __thread int v6;
bool
t1()
{
if (v1 != 0)
return false;
v1 = 10;
return true;
}
bool
t2()
{
if (v2 != 0)
return false;
v2 = 20;
return true;
}
bool
t3()
{
if (v3 != 3)
return false;
v3 = 30;
return true;
}
bool
t4()
{
if (v4 != 4)
return false;
v4 = 40;
return true;
}
// For test 5 the main function calls f5b(f5a()), then calls t5().
int*
f5a()
{
return &v5;
}
void
f5b(int* p)
{
*p = 50;
}
bool
t5()
{
return v5 == 50;
}
// For test 5 the main function calls f6b(f6a()), then calls t6().
int*
f6a()
{
return &v6;
}
void
f6b(int* p)
{
*p = 60;
}
bool
t6()
{
return v6 == 60;
}
bool
t7()
{
return (v1 == 10
&& v2 == 20
&& v3 == 30
&& v4 == 40
&& v5 == 50
&& v6 == 60);
}
|
