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
|
/*
* Copyright (C) 2015 The Android Open Source Project
*
* 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.
*/
#include <gtest/gtest.h>
#include <dlfcn.h>
static int g_atfork_prepare_calls = 0;
static void AtForkPrepare1() { g_atfork_prepare_calls = (g_atfork_prepare_calls * 10) + 1; }
static void AtForkPrepare2() { g_atfork_prepare_calls = (g_atfork_prepare_calls * 10) + 2; }
static void AtForkPrepare3() { g_atfork_prepare_calls = (g_atfork_prepare_calls * 10) + 3; }
static void AtForkPrepare4() { g_atfork_prepare_calls = (g_atfork_prepare_calls * 10) + 4; }
static int g_atfork_parent_calls = 0;
static void AtForkParent1() { g_atfork_parent_calls = (g_atfork_parent_calls * 10) + 1; }
static void AtForkParent2() { g_atfork_parent_calls = (g_atfork_parent_calls * 10) + 2; }
static void AtForkParent3() { g_atfork_parent_calls = (g_atfork_parent_calls * 10) + 3; }
static void AtForkParent4() { g_atfork_parent_calls = (g_atfork_parent_calls * 10) + 4; }
static int g_atfork_child_calls = 0;
static void AtForkChild1() { g_atfork_child_calls = (g_atfork_child_calls * 10) + 1; }
static void AtForkChild2() { g_atfork_child_calls = (g_atfork_child_calls * 10) + 2; }
static void AtForkChild3() { g_atfork_child_calls = (g_atfork_child_calls * 10) + 3; }
static void AtForkChild4() { g_atfork_child_calls = (g_atfork_child_calls * 10) + 4; }
TEST(pthread, pthread_atfork_with_dlclose) {
ASSERT_EQ(0, pthread_atfork(AtForkPrepare1, AtForkParent1, AtForkChild1));
void* handle = dlopen("libtest_pthread_atfork.so", RTLD_NOW | RTLD_LOCAL);
ASSERT_TRUE(handle != nullptr) << dlerror();
typedef int (*fn_t)(void (*)(void), void (*)(void), void (*)(void));
fn_t fn = reinterpret_cast<fn_t>(dlsym(handle, "proxy_pthread_atfork"));
ASSERT_TRUE(fn != nullptr) << dlerror();
// the library registers 2 additional atfork handlers in a constructor
ASSERT_EQ(0, fn(AtForkPrepare2, AtForkParent2, AtForkChild2));
ASSERT_EQ(0, fn(AtForkPrepare3, AtForkParent3, AtForkChild3));
ASSERT_EQ(0, pthread_atfork(AtForkPrepare4, AtForkParent4, AtForkChild4));
int pid = fork();
ASSERT_NE(-1, pid) << strerror(errno);
if (pid == 0) {
ASSERT_EQ(1234, g_atfork_child_calls);
_exit(0);
}
ASSERT_EQ(1234, g_atfork_parent_calls);
ASSERT_EQ(4321, g_atfork_prepare_calls);
EXPECT_EQ(0, dlclose(handle));
g_atfork_prepare_calls = g_atfork_parent_calls = g_atfork_child_calls = 0;
int status;
ASSERT_EQ(pid, waitpid(pid, &status, 0));
pid = fork();
ASSERT_NE(-1, pid) << strerror(errno);
if (pid == 0) {
ASSERT_EQ(14, g_atfork_child_calls);
_exit(0);
}
ASSERT_EQ(14, g_atfork_parent_calls);
ASSERT_EQ(41, g_atfork_prepare_calls);
ASSERT_EQ(pid, waitpid(pid, &status, 0));
}
|
