blob: 1eb86fb87eac3b9b0fc6ac054f40366dd678e872 (
plain) (
blame)
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
|
/*
* Copyright 2022 Google LLC
*
* Use of this source code is governed by a BSD-style license that can be
* found in the LICENSE file.
*/
#ifndef SkShaderCodeDictionary_DEFINED
#define SkShaderCodeDictionary_DEFINED
#include <unordered_map>
#include "include/private/SkPaintParamsKey.h"
#include "include/private/SkSpinlock.h"
#include "include/private/SkUniquePaintParamsID.h"
#include "src/core/SkArenaAlloc.h"
class SkShaderCodeDictionary {
public:
SkShaderCodeDictionary();
struct Entry {
public:
SkUniquePaintParamsID uniqueID() const {
SkASSERT(fUniqueID.isValid());
return fUniqueID;
}
const SkPaintParamsKey& paintParamsKey() const { return fPaintParamsKey; }
private:
friend class SkShaderCodeDictionary;
Entry(const SkPaintParamsKey& paintParamsKey) : fPaintParamsKey(paintParamsKey) {}
void setUniqueID(uint32_t newID) {
SkASSERT(!fUniqueID.isValid());
fUniqueID = SkUniquePaintParamsID(newID);
}
SkUniquePaintParamsID fUniqueID; // fixed-size (uint32_t) unique ID assigned to a key
SkPaintParamsKey fPaintParamsKey; // variable-length paint key descriptor
};
const Entry* findOrCreate(const SkPaintParamsKey&) SK_EXCLUDES(fSpinLock);
const Entry* lookup(SkUniquePaintParamsID) const SK_EXCLUDES(fSpinLock);
private:
Entry* makeEntry(const SkPaintParamsKey&);
struct Hash {
size_t operator()(const SkPaintParamsKey&) const;
};
// TODO: can we do something better given this should have write-seldom/read-often behavior?
mutable SkSpinlock fSpinLock;
std::unordered_map<SkPaintParamsKey, Entry*, Hash> fHash SK_GUARDED_BY(fSpinLock);
std::vector<Entry*> fEntryVector SK_GUARDED_BY(fSpinLock);
SkArenaAlloc fArena{256};
};
#endif // SkShaderCodeDictionary_DEFINED
|
