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
229
230
231
232
233
234
235
236
|
#[macro_use]
extern crate criterion;
use anyhow::Result;
use criterion::Criterion;
use std::fs;
use std::path::Path;
use std::path::PathBuf;
use wasmparser::{DataKind, ElementKind, Parser, Payload, Validator, WasmFeatures};
/// A benchmark input.
pub struct BenchmarkInput {
/// The path to the benchmark file important for handling errors.
pub path: PathBuf,
/// The encoded Wasm module that is run by the benchmark.
pub wasm: Vec<u8>,
}
impl BenchmarkInput {
/// Creates a new benchmark input.
pub fn new(test_path: PathBuf, encoded_wasm: Vec<u8>) -> Self {
Self {
path: test_path,
wasm: encoded_wasm,
}
}
}
/// Returns a vector of all found benchmark input files under the given directory.
///
/// Benchmark input files can be `.wat` or `.wast` formatted files.
/// For `.wast` files we pull out all the module directives and run them in the benchmarks.
fn collect_test_files(path: &Path, list: &mut Vec<BenchmarkInput>) -> Result<()> {
for entry in path.read_dir()? {
let entry = entry?;
let path = entry.path();
if path.is_dir() {
collect_test_files(&path, list)?;
continue;
}
match path.extension().and_then(|ext| ext.to_str()) {
Some("wasm") => {
let wasm = fs::read(&path)?;
list.push(BenchmarkInput::new(path, wasm));
}
Some("wat") | Some("txt") => {
if let Ok(wasm) = wat::parse_file(&path) {
list.push(BenchmarkInput::new(path, wasm));
}
}
Some("wast") => {
let contents = fs::read_to_string(&path)?;
let buf = match wast::parser::ParseBuffer::new(&contents) {
Ok(buf) => buf,
Err(_) => continue,
};
let wast: wast::Wast<'_> = match wast::parser::parse(&buf) {
Ok(wast) => wast,
Err(_) => continue,
};
for directive in wast.directives {
match directive {
wast::WastDirective::Module(mut module) => {
let wasm = module.encode()?;
list.push(BenchmarkInput::new(path.clone(), wasm));
}
_ => continue,
}
}
}
_ => (),
}
}
Ok(())
}
/// Reads the input given the Wasm parser or validator.
///
/// The `path` specifies which benchmark input file we are currently operating on
/// so that we can report better errors in case of failures.
fn read_all_wasm(wasm: &[u8]) -> Result<()> {
use Payload::*;
for item in Parser::new(0).parse_all(wasm) {
match item? {
TypeSection(s) => {
for item in s {
item?;
}
}
ImportSection(s) => {
for item in s {
item?;
}
}
AliasSection(s) => {
for item in s {
item?;
}
}
InstanceSection(s) => {
for item in s {
for arg in item?.args()? {
arg?;
}
}
}
ModuleSection(s) => {
for item in s {
item?;
}
}
FunctionSection(s) => {
for item in s {
item?;
}
}
TableSection(s) => {
for item in s {
item?;
}
}
MemorySection(s) => {
for item in s {
item?;
}
}
GlobalSection(s) => {
for item in s {
for op in item?.init_expr.get_operators_reader() {
op?;
}
}
}
ExportSection(s) => {
for item in s {
item?;
}
}
ElementSection(s) => {
for item in s {
let item = item?;
if let ElementKind::Active { init_expr, .. } = item.kind {
for op in init_expr.get_operators_reader() {
op?;
}
}
for op in item.items.get_items_reader()? {
op?;
}
}
}
DataSection(s) => {
for item in s {
let item = item?;
if let DataKind::Active { init_expr, .. } = item.kind {
for op in init_expr.get_operators_reader() {
op?;
}
}
}
}
CodeSectionEntry(body) => {
for local in body.get_locals_reader()? {
local?;
}
for op in body.get_operators_reader()? {
op?;
}
}
Version { .. }
| StartSection { .. }
| DataCountSection { .. }
| UnknownSection { .. }
| CustomSection { .. }
| CodeSectionStart { .. }
| ModuleCodeSectionStart { .. }
| ModuleCodeSectionEntry { .. }
| End => {}
}
}
Ok(())
}
/// Returns the default benchmark inputs that are proper `wasmparser` benchmark
/// test inputs.
fn collect_benchmark_inputs() -> Vec<BenchmarkInput> {
let mut ret = Vec::new();
collect_test_files("../../tests".as_ref(), &mut ret).unwrap();
return ret;
}
fn it_works_benchmark(c: &mut Criterion) {
let mut inputs = collect_benchmark_inputs();
// Filter out all benchmark inputs that fail to parse via `wasmparser`.
inputs.retain(|input| read_all_wasm(input.wasm.as_slice()).is_ok());
c.bench_function("it works benchmark", move |b| {
b.iter(|| {
for input in &mut inputs {
read_all_wasm(input.wasm.as_slice()).unwrap();
}
})
});
}
fn validate_benchmark(c: &mut Criterion) {
fn validator() -> Validator {
let mut ret = Validator::new();
ret.wasm_features(WasmFeatures {
reference_types: true,
multi_value: true,
simd: true,
module_linking: true,
bulk_memory: true,
threads: true,
tail_call: true,
multi_memory: true,
memory64: true,
deterministic_only: false,
});
return ret;
}
let mut inputs = collect_benchmark_inputs();
// Filter out all benchmark inputs that fail to validate via `wasmparser`.
inputs.retain(|input| validator().validate_all(&input.wasm).is_ok());
c.bench_function("validate benchmark", move |b| {
b.iter(|| {
for input in &mut inputs {
validator().validate_all(&input.wasm).unwrap();
}
})
});
}
criterion_group!(benchmark, it_works_benchmark, validate_benchmark);
criterion_main!(benchmark);
|
