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
|
//===- llvm/unittest/Support/DynamicLibrary/DynamicLibraryTest.cpp --------===//
//
// The LLVM Compiler Infrastructure
//
// This file is distributed under the University of Illinois Open Source
// License. See LICENSE.TXT for details.
//
//===----------------------------------------------------------------------===//
#include "llvm/Support/DynamicLibrary.h"
#include "llvm/Config/config.h"
#include "llvm/Support/FileSystem.h"
#include "llvm/Support/ManagedStatic.h"
#include "llvm/Support/Path.h"
#include "gtest/gtest.h"
#include "PipSqueak.h"
using namespace llvm;
using namespace llvm::sys;
std::string LibPath(const std::string Name = "PipSqueak") {
const std::vector<testing::internal::string>& Argvs = testing::internal::GetArgvs();
const char *Argv0 = Argvs.size() > 0 ? Argvs[0].c_str() : "DynamicLibraryTests";
void *Ptr = (void*)(intptr_t)TestA;
std::string Path = fs::getMainExecutable(Argv0, Ptr);
llvm::SmallString<256> Buf(path::parent_path(Path));
path::append(Buf, (Name+".so").c_str());
return Buf.str();
}
#if defined(_WIN32) || (defined(HAVE_DLFCN_H) && defined(HAVE_DLOPEN))
typedef void (*SetStrings)(std::string &GStr, std::string &LStr);
typedef void (*TestOrder)(std::vector<std::string> &V);
typedef const char *(*GetString)();
template <class T> static T FuncPtr(void *Ptr) {
union {
T F;
void *P;
} Tmp;
Tmp.P = Ptr;
return Tmp.F;
}
template <class T> static void* PtrFunc(T *Func) {
union {
T *F;
void *P;
} Tmp;
Tmp.F = Func;
return Tmp.P;
}
static const char *OverloadTestA() { return "OverloadCall"; }
std::string StdString(const char *Ptr) { return Ptr ? Ptr : ""; }
TEST(DynamicLibrary, Overload) {
{
std::string Err;
llvm_shutdown_obj Shutdown;
DynamicLibrary DL =
DynamicLibrary::getPermanentLibrary(LibPath().c_str(), &Err);
EXPECT_TRUE(DL.isValid());
EXPECT_TRUE(Err.empty());
GetString GS = FuncPtr<GetString>(DL.getAddressOfSymbol("TestA"));
EXPECT_TRUE(GS != nullptr && GS != &TestA);
EXPECT_EQ(StdString(GS()), "LibCall");
GS = FuncPtr<GetString>(DynamicLibrary::SearchForAddressOfSymbol("TestA"));
EXPECT_TRUE(GS != nullptr && GS != &TestA);
EXPECT_EQ(StdString(GS()), "LibCall");
DL = DynamicLibrary::getPermanentLibrary(nullptr, &Err);
EXPECT_TRUE(DL.isValid());
EXPECT_TRUE(Err.empty());
GS = FuncPtr<GetString>(DynamicLibrary::SearchForAddressOfSymbol("TestA"));
EXPECT_TRUE(GS != nullptr && GS == &TestA);
EXPECT_EQ(StdString(GS()), "ProcessCall");
GS = FuncPtr<GetString>(DL.getAddressOfSymbol("TestA"));
EXPECT_TRUE(GS != nullptr && GS == &TestA);
EXPECT_EQ(StdString(GS()), "ProcessCall");
DynamicLibrary::AddSymbol("TestA", PtrFunc(&OverloadTestA));
GS = FuncPtr<GetString>(DL.getAddressOfSymbol("TestA"));
EXPECT_TRUE(GS != nullptr && GS != &OverloadTestA);
GS = FuncPtr<GetString>(DynamicLibrary::SearchForAddressOfSymbol("TestA"));
EXPECT_TRUE(GS != nullptr && GS == &OverloadTestA);
EXPECT_EQ(StdString(GS()), "OverloadCall");
}
EXPECT_TRUE(FuncPtr<GetString>(DynamicLibrary::SearchForAddressOfSymbol(
"TestA")) == nullptr);
}
TEST(DynamicLibrary, Shutdown) {
std::string A("PipSqueak"), B, C("SecondLib");
std::vector<std::string> Order;
{
std::string Err;
llvm_shutdown_obj Shutdown;
DynamicLibrary DL =
DynamicLibrary::getPermanentLibrary(LibPath(A).c_str(), &Err);
EXPECT_TRUE(DL.isValid());
EXPECT_TRUE(Err.empty());
SetStrings SS_0 = FuncPtr<SetStrings>(
DynamicLibrary::SearchForAddressOfSymbol("SetStrings"));
EXPECT_TRUE(SS_0 != nullptr);
SS_0(A, B);
EXPECT_EQ(B, "Local::Local(PipSqueak)");
TestOrder TO_0 = FuncPtr<TestOrder>(
DynamicLibrary::SearchForAddressOfSymbol("TestOrder"));
EXPECT_TRUE(TO_0 != nullptr);
DynamicLibrary DL2 =
DynamicLibrary::getPermanentLibrary(LibPath(C).c_str(), &Err);
EXPECT_TRUE(DL2.isValid());
EXPECT_TRUE(Err.empty());
// Should find latest version of symbols in SecondLib
SetStrings SS_1 = FuncPtr<SetStrings>(
DynamicLibrary::SearchForAddressOfSymbol("SetStrings"));
EXPECT_TRUE(SS_1 != nullptr);
EXPECT_TRUE(SS_0 != SS_1);
TestOrder TO_1 = FuncPtr<TestOrder>(
DynamicLibrary::SearchForAddressOfSymbol("TestOrder"));
EXPECT_TRUE(TO_1 != nullptr);
EXPECT_TRUE(TO_0 != TO_1);
B.clear();
SS_1(C, B);
EXPECT_EQ(B, "Local::Local(SecondLib)");
TO_0(Order);
TO_1(Order);
}
EXPECT_EQ(A, "Global::~Global");
EXPECT_EQ(B, "Local::~Local");
EXPECT_TRUE(FuncPtr<SetStrings>(DynamicLibrary::SearchForAddressOfSymbol(
"SetStrings")) == nullptr);
// Test unload/destruction ordering
EXPECT_EQ(Order.size(), 2UL);
EXPECT_EQ(Order.front(), "SecondLib");
EXPECT_EQ(Order.back(), "PipSqueak");
}
#else
TEST(DynamicLibrary, Unsupported) {
std::string Err;
DynamicLibrary DL =
DynamicLibrary::getPermanentLibrary(LibPath().c_str(), &Err);
EXPECT_FALSE(DL.isValid());
EXPECT_EQ(Err, "dlopen() not supported on this platform");
}
#endif
|
