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
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
|
/* IBM_PROLOG_BEGIN_TAG */
/* This is an automatically generated prolog. */
/* */
/* $Source: src/usr/testcore/lib/tls.H $ */
/* */
/* OpenPOWER HostBoot Project */
/* */
/* Contributors Listed Below - COPYRIGHT 2015 */
/* [+] International Business Machines Corp. */
/* */
/* */
/* Licensed under the Apache License, Version 2.0 (the "License"); */
/* you may not use this file except in compliance with the License. */
/* You may obtain a copy of the License at */
/* */
/* http://www.apache.org/licenses/LICENSE-2.0 */
/* */
/* Unless required by applicable law or agreed to in writing, software */
/* distributed under the License is distributed on an "AS IS" BASIS, */
/* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or */
/* implied. See the License for the specific language governing */
/* permissions and limitations under the License. */
/* */
/* IBM_PROLOG_END_TAG */
#ifndef __LIB_TLS_H
#define __LIB_TLS_H
#include <cxxtest/TestSuite.H>
#include <sys/task.h>
#include "../tlsmod/nontrivialctor.H"
namespace __tls_test
{
const size_t THREADS_PER_TEST = 15;
constexpr size_t FOOBAR_INIT_VALUE = 0x4321dcba;
constexpr size_t FOOBAR_POST_VALUE = 0x4321dcbb;
thread_local size_t foobar = FOOBAR_INIT_VALUE;
extern thread_local NonTrivialCtor foobar_object;
/**
* @brief Spawns a set of tasks and waits on them
*
* @param[in] i_pFnName Name of the function doing the spawning, for
* tracing
* @param[in] i_pFn Function pointer suitable for passing to a task_create
* call
*/
void spawnTasks(
const char* const i_pFnName,
void*(*i_pFn)(void*))
{
std::vector<tid_t> tids;
for(size_t thread=0;thread<THREADS_PER_TEST;++thread)
{
const auto tid = task_create(i_pFn, nullptr);
TS_INFO("%s: created TID %d",i_pFnName,tid);
tids.push_back(tid);
}
for(const auto tid : tids)
{
int status = 0;
const auto tidWaitedOn = task_wait_tid(tid,&status,nullptr);
if(tidWaitedOn != tid)
{
TS_FAIL("%s: Failed to wait on TID %d; got return "
"value of %d",i_pFnName,tid,tidWaitedOn);
}
else if(status != TASK_STATUS_EXITED_CLEAN)
{
TS_FAIL("%s: TID %d exited with bad status of %d",
i_pFnName,tid,status);
}
else
{
TS_INFO("%s: Waited on TID %d",i_pFnName,tid);
}
// Wait on all threads, despite any errors.
}
}
/**
* @brief Tests that a simple thread local variable in this translation
* unit has the right initial value and right post increment value
*/
void* test_tls(void* unused)
{
TS_INFO(ENTER_MRK "test_tls");
do {
decltype(foobar) rc = foobar;
if(rc != FOOBAR_INIT_VALUE)
{
TS_FAIL("test_tls: bad initial value; "
"expected 0x%016llX but got 0x%016llX",
FOOBAR_INIT_VALUE,rc);
break;
}
task_yield();
foobar++;
task_yield();
rc = foobar;
if(rc != FOOBAR_POST_VALUE)
{
TS_FAIL("test_tls: bad post value; "
"expected 0x%016llX but got 0x%016llX",
FOOBAR_POST_VALUE,rc);
break;
}
} while(0);
TS_INFO(EXIT_MRK "test_tls");
return nullptr;
}
/**
* @brief Tests that a complex object from another shared library
* has the right initial value and right post increment value
*/
void* test_from_other_module(void* unused)
{
TS_INFO(ENTER_MRK "test_from_other_module");
do {
char* const thebytes = foobar_object.c_str();
if(strcmp(thebytes,foobar_object.INIT_VALUE)!=0)
{
TS_FAIL("test_from_other_module: bad initial value; "
"expected %s but got %s", foobar_object.INIT_VALUE, thebytes);
break;
}
task_yield();
thebytes[0]++;
task_yield();
if(strcmp(thebytes,foobar_object.POST_VALUE)!=0)
{
TS_FAIL("test_from_other_module: bad post value; "
"expected %s but got %s", foobar_object.POST_VALUE, thebytes);
break;
}
} while (0);
TS_INFO(EXIT_MRK "test_from_other_module");
return nullptr;
}
/**
* @brief Support a remote shared library invoking a test whereby this
* shared library acts as the producer for the foobar variable
*/
void test_tls_call_other_module_producer()
{
TS_INFO(ENTER_MRK "test_tls_call_other_module_producer");
spawnTasks("test_tls_call_other_module_producer",
__tls_test::test_tls);
TS_INFO(EXIT_MRK "test_tls_call_other_module_producer");
}
/**
* @brief Support a remote shared library invoking a test whereby this
* shared library acts as the consumer for the invoking library's
* variable
*/
void test_tls_call_other_module_consumer()
{
TS_INFO(ENTER_MRK "test_tls_call_other_module_consumer");
spawnTasks("test_tls_call_other_module_consumer",
__tls_test::test_from_other_module);
TS_INFO(EXIT_MRK "test_tls_call_other_module_consumer");
}
/**
* @brief Return the init value for foobar
*
* @return size_t Foobar's expected init value
*/
size_t foobarInitValue()
{
return FOOBAR_INIT_VALUE;
}
/**
* @brief Return the post value for foobar
*
* @return size_t Foobar's expected post value
*/
size_t foobarPostValue()
{
return FOOBAR_POST_VALUE;
}
}; // End __tls_test namespace
// Test TLS within a translation unit
class LibcTlsTest : public CxxTest::TestSuite
{
public:
/**
* @brief Simple test of a locally defined TLS variable
*/
void testTls()
{
TS_INFO(ENTER_MRK "testTls");
__tls_test::spawnTasks("testTls",__tls_test::test_tls);
TS_INFO(EXIT_MRK "testTls");
}
};
#endif
|
