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
|
/*
* Copyright (C) 2016-2019 Apple Inc. All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
*
* THIS SOFTWARE IS PROVIDED BY APPLE INC. ``AS IS'' AND ANY
* EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
* PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL APPLE INC. OR
* CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
* EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
* PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
* PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY
* OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
* OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*/
#include "config.h"
#include "WasmSignature.h"
#if ENABLE(WEBASSEMBLY)
#include "WasmSignatureInlines.h"
#include <wtf/CommaPrinter.h>
#include <wtf/FastMalloc.h>
#include <wtf/HashFunctions.h>
#include <wtf/PrintStream.h>
#include <wtf/StringPrintStream.h>
#include <wtf/text/WTFString.h>
namespace JSC { namespace Wasm {
SignatureInformation* SignatureInformation::theOne { nullptr };
std::once_flag SignatureInformation::signatureInformationFlag;
String Signature::toString() const
{
return WTF::toString(*this);
}
void Signature::dump(PrintStream& out) const
{
{
out.print("(");
CommaPrinter comma;
for (SignatureArgCount arg = 0; arg < argumentCount(); ++arg)
out.print(comma, makeString(argument(arg).kind));
out.print(")");
}
{
CommaPrinter comma;
out.print(" -> [");
for (SignatureArgCount ret = 0; ret < returnCount(); ++ret)
out.print(comma, makeString(returnType(ret).kind));
out.print("]");
}
}
static unsigned computeHash(size_t returnCount, const Type* returnTypes, size_t argumentCount, const Type* argumentTypes)
{
unsigned accumulator = 0xa1bcedd8u;
for (uint32_t i = 0; i < argumentCount; ++i) {
accumulator = WTF::pairIntHash(accumulator, WTF::IntHash<uint8_t>::hash(static_cast<uint8_t>(argumentTypes[i].kind)));
accumulator = WTF::pairIntHash(accumulator, WTF::IntHash<uint8_t>::hash(static_cast<uint8_t>(argumentTypes[i].nullable)));
accumulator = WTF::pairIntHash(accumulator, WTF::IntHash<unsigned>::hash(argumentTypes[i].index));
}
for (uint32_t i = 0; i < returnCount; ++i) {
accumulator = WTF::pairIntHash(accumulator, WTF::IntHash<uint8_t>::hash(static_cast<uint8_t>(returnTypes[i].kind)));
accumulator = WTF::pairIntHash(accumulator, WTF::IntHash<uint8_t>::hash(static_cast<uint8_t>(returnTypes[i].nullable)));
accumulator = WTF::pairIntHash(accumulator, WTF::IntHash<unsigned>::hash(returnTypes[i].index));
}
return accumulator;
}
unsigned Signature::hash() const
{
return computeHash(returnCount(), storage(0), argumentCount(), storage(returnCount()));
}
RefPtr<Signature> Signature::tryCreate(SignatureArgCount returnCount, SignatureArgCount argumentCount)
{
// We use WTF_MAKE_FAST_ALLOCATED for this class.
auto result = tryFastMalloc(allocatedSize(returnCount, argumentCount));
void* memory = nullptr;
if (!result.getValue(memory))
return nullptr;
Signature* signature = new (NotNull, memory) Signature(returnCount, argumentCount);
return adoptRef(signature);
}
SignatureInformation::SignatureInformation()
{
#define MAKE_THUNK_SIGNATURE(type, enc, str, val) \
do { \
if (TypeKind::type != TypeKind::Void) { \
RefPtr<Signature> sig = Signature::tryCreate(1, 0); \
sig->ref(); \
sig->getReturnType(0) = Types::type; \
thunkSignatures[linearizeType(TypeKind::type)] = sig.get(); \
m_signatureSet.add(SignatureHash { sig.releaseNonNull() }); \
} \
} while (false);
FOR_EACH_WASM_TYPE(MAKE_THUNK_SIGNATURE);
// Make Void again because we don't use the one that has void in it.
{
RefPtr<Signature> sig = Signature::tryCreate(0, 0);
sig->ref();
thunkSignatures[linearizeType(TypeKind::Void)] = sig.get();
m_signatureSet.add(SignatureHash { sig.releaseNonNull() });
}
}
struct ParameterTypes {
const Vector<Type, 1>& returnTypes;
const Vector<Type>& argumentTypes;
static unsigned hash(const ParameterTypes& params)
{
return computeHash(params.returnTypes.size(), params.returnTypes.data(), params.argumentTypes.size(), params.argumentTypes.data());
}
static bool equal(const SignatureHash& sig, const ParameterTypes& params)
{
if (sig.key->argumentCount() != params.argumentTypes.size())
return false;
if (sig.key->returnCount() != params.returnTypes.size())
return false;
for (unsigned i = 0; i < sig.key->argumentCount(); ++i) {
if (sig.key->argument(i) != params.argumentTypes[i])
return false;
}
for (unsigned i = 0; i < sig.key->returnCount(); ++i) {
if (sig.key->returnType(i) != params.returnTypes[i])
return false;
}
return true;
}
static void translate(SignatureHash& entry, const ParameterTypes& params, unsigned)
{
RefPtr<Signature> signature = Signature::tryCreate(params.returnTypes.size(), params.argumentTypes.size());
RELEASE_ASSERT(signature);
for (unsigned i = 0; i < params.returnTypes.size(); ++i)
signature->getReturnType(i) = params.returnTypes[i];
for (unsigned i = 0; i < params.argumentTypes.size(); ++i)
signature->getArgument(i) = params.argumentTypes[i];
entry.key = WTFMove(signature);
}
};
RefPtr<Signature> SignatureInformation::signatureFor(const Vector<Type, 1>& results, const Vector<Type>& args)
{
SignatureInformation& info = singleton();
Locker locker { info.m_lock };
auto addResult = info.m_signatureSet.template add<ParameterTypes>(ParameterTypes { results, args });
return makeRef(*addResult.iterator->key);
}
void SignatureInformation::tryCleanup()
{
SignatureInformation& info = singleton();
Locker locker { info.m_lock };
info.m_signatureSet.removeIf([&] (auto& hash) {
const auto& signature = hash.key;
return signature->refCount() == 1;
});
}
} } // namespace JSC::Wasm
#endif // ENABLE(WEBASSEMBLY)
|
