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
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
263
264
265
266
267
268
269
270
271
272
273
274
275
276
277
278
279
280
281
282
283
284
285
286
287
288
289
290
291
292
use crate::QueryCtxt;
use measureme::{StringComponent, StringId};
use rustc_data_structures::fx::FxHashMap;
use rustc_data_structures::profiling::SelfProfiler;
use rustc_hir::def_id::{CrateNum, DefId, DefIndex, LocalDefId, LOCAL_CRATE};
use rustc_hir::definitions::DefPathData;
use rustc_middle::ty::{TyCtxt, WithOptConstParam};
use rustc_query_system::query::QueryCache;
use std::fmt::Debug;
use std::io::Write;
pub(crate) struct QueryKeyStringCache {
def_id_cache: FxHashMap<DefId, StringId>,
}
impl QueryKeyStringCache {
fn new() -> QueryKeyStringCache {
QueryKeyStringCache { def_id_cache: Default::default() }
}
}
struct QueryKeyStringBuilder<'p, 'tcx> {
profiler: &'p SelfProfiler,
tcx: TyCtxt<'tcx>,
string_cache: &'p mut QueryKeyStringCache,
}
impl<'p, 'tcx> QueryKeyStringBuilder<'p, 'tcx> {
fn new(
profiler: &'p SelfProfiler,
tcx: TyCtxt<'tcx>,
string_cache: &'p mut QueryKeyStringCache,
) -> QueryKeyStringBuilder<'p, 'tcx> {
QueryKeyStringBuilder { profiler, tcx, string_cache }
}
fn def_id_to_string_id(&mut self, def_id: DefId) -> StringId {
if let Some(&string_id) = self.string_cache.def_id_cache.get(&def_id) {
return string_id;
}
let def_key = self.tcx.def_key(def_id);
let (parent_string_id, start_index) = match def_key.parent {
Some(parent_index) => {
let parent_def_id = DefId { index: parent_index, krate: def_id.krate };
(self.def_id_to_string_id(parent_def_id), 0)
}
None => (StringId::INVALID, 2),
};
let dis_buffer = &mut [0u8; 16];
let crate_name;
let other_name;
let name;
let dis;
let end_index;
match def_key.disambiguated_data.data {
DefPathData::CrateRoot => {
crate_name = self.tcx.crate_name(def_id.krate);
name = crate_name.as_str();
dis = "";
end_index = 3;
}
other => {
other_name = other.to_string();
name = other_name.as_str();
if def_key.disambiguated_data.disambiguator == 0 {
dis = "";
end_index = 3;
} else {
write!(&mut dis_buffer[..], "[{}]", def_key.disambiguated_data.disambiguator)
.unwrap();
let end_of_dis = dis_buffer.iter().position(|&c| c == b']').unwrap();
dis = std::str::from_utf8(&dis_buffer[..end_of_dis + 1]).unwrap();
end_index = 4;
}
}
}
let components = [
StringComponent::Ref(parent_string_id),
StringComponent::Value("::"),
StringComponent::Value(name),
StringComponent::Value(dis),
];
let string_id = self.profiler.alloc_string(&components[start_index..end_index]);
self.string_cache.def_id_cache.insert(def_id, string_id);
string_id
}
}
trait IntoSelfProfilingString {
fn to_self_profile_string(&self, builder: &mut QueryKeyStringBuilder<'_, '_>) -> StringId;
}
impl<T: Debug> IntoSelfProfilingString for T {
default fn to_self_profile_string(
&self,
builder: &mut QueryKeyStringBuilder<'_, '_>,
) -> StringId {
let s = format!("{:?}", self);
builder.profiler.alloc_string(&s[..])
}
}
impl<T: SpecIntoSelfProfilingString> IntoSelfProfilingString for T {
fn to_self_profile_string(&self, builder: &mut QueryKeyStringBuilder<'_, '_>) -> StringId {
self.spec_to_self_profile_string(builder)
}
}
#[rustc_specialization_trait]
trait SpecIntoSelfProfilingString: Debug {
fn spec_to_self_profile_string(&self, builder: &mut QueryKeyStringBuilder<'_, '_>) -> StringId;
}
impl SpecIntoSelfProfilingString for DefId {
fn spec_to_self_profile_string(&self, builder: &mut QueryKeyStringBuilder<'_, '_>) -> StringId {
builder.def_id_to_string_id(*self)
}
}
impl SpecIntoSelfProfilingString for CrateNum {
fn spec_to_self_profile_string(&self, builder: &mut QueryKeyStringBuilder<'_, '_>) -> StringId {
builder.def_id_to_string_id(self.as_def_id())
}
}
impl SpecIntoSelfProfilingString for DefIndex {
fn spec_to_self_profile_string(&self, builder: &mut QueryKeyStringBuilder<'_, '_>) -> StringId {
builder.def_id_to_string_id(DefId { krate: LOCAL_CRATE, index: *self })
}
}
impl SpecIntoSelfProfilingString for LocalDefId {
fn spec_to_self_profile_string(&self, builder: &mut QueryKeyStringBuilder<'_, '_>) -> StringId {
builder.def_id_to_string_id(DefId { krate: LOCAL_CRATE, index: self.local_def_index })
}
}
impl<T: SpecIntoSelfProfilingString> SpecIntoSelfProfilingString for WithOptConstParam<T> {
fn spec_to_self_profile_string(&self, builder: &mut QueryKeyStringBuilder<'_, '_>) -> StringId {
let did = StringComponent::Ref(self.did.to_self_profile_string(builder));
let const_param_did = if let Some(const_param_did) = self.const_param_did {
let const_param_did = builder.def_id_to_string_id(const_param_did);
StringComponent::Ref(const_param_did)
} else {
StringComponent::Value("_")
};
let components = [
StringComponent::Value("("),
did,
StringComponent::Value(", "),
const_param_did,
StringComponent::Value(")"),
];
builder.profiler.alloc_string(&components[..])
}
}
impl<T0, T1> SpecIntoSelfProfilingString for (T0, T1)
where
T0: SpecIntoSelfProfilingString,
T1: SpecIntoSelfProfilingString,
{
fn spec_to_self_profile_string(&self, builder: &mut QueryKeyStringBuilder<'_, '_>) -> StringId {
let val0 = self.0.to_self_profile_string(builder);
let val1 = self.1.to_self_profile_string(builder);
let components = &[
StringComponent::Value("("),
StringComponent::Ref(val0),
StringComponent::Value(","),
StringComponent::Ref(val1),
StringComponent::Value(")"),
];
builder.profiler.alloc_string(components)
}
}
pub(crate) fn alloc_self_profile_query_strings_for_query_cache<'tcx, C>(
tcx: TyCtxt<'tcx>,
query_name: &'static str,
query_cache: &C,
string_cache: &mut QueryKeyStringCache,
) where
C: QueryCache,
C::Key: Debug + Clone,
{
tcx.prof.with_profiler(|profiler| {
let event_id_builder = profiler.event_id_builder();
if profiler.query_key_recording_enabled() {
let mut query_string_builder = QueryKeyStringBuilder::new(profiler, tcx, string_cache);
let query_name = profiler.get_or_alloc_cached_string(query_name);
let mut query_keys_and_indices = Vec::new();
query_cache.iter(&mut |k, _, i| query_keys_and_indices.push((k.clone(), i)));
for (query_key, dep_node_index) in query_keys_and_indices {
let query_invocation_id = dep_node_index.into();
let query_key = query_key.to_self_profile_string(&mut query_string_builder);
let event_id = event_id_builder.from_label_and_arg(query_name, query_key);
profiler.map_query_invocation_id_to_string(
query_invocation_id,
event_id.to_string_id(),
);
}
} else {
let query_name = profiler.get_or_alloc_cached_string(query_name);
let event_id = event_id_builder.from_label(query_name).to_string_id();
let mut query_invocation_ids = Vec::new();
query_cache.iter(&mut |_, _, i| {
query_invocation_ids.push(i.into());
});
profiler.bulk_map_query_invocation_id_to_single_string(
query_invocation_ids.into_iter(),
event_id,
);
}
});
}
pub fn alloc_self_profile_query_strings<'tcx>(tcx: TyCtxt<'tcx>) {
if !tcx.prof.enabled() {
return;
}
let mut string_cache = QueryKeyStringCache::new();
let queries = QueryCtxt::from_tcx(tcx);
for query in &queries.queries.query_structs {
(query.alloc_self_profile_query_strings)(tcx, &mut string_cache);
}
}