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
|
/*
* Copyright 2014 Google Inc.
*
* Use of this source code is governed by a BSD-style license that can be
* found in the LICENSE file.
*/
#include "Benchmark.h"
#include "SkRandom.h"
#include "SkTemplates.h"
#include "SkUtils.h"
template <typename Memcpy32>
class Memcpy32Bench : public Benchmark {
public:
explicit Memcpy32Bench(int count, Memcpy32 memcpy32, const char* name)
: fCount(count)
, fMemcpy32(memcpy32)
, fName(SkStringPrintf("%s_%d", name, count)) {}
const char* onGetName() SK_OVERRIDE {
return fName.c_str();
}
bool isSuitableFor(Backend backend) SK_OVERRIDE {
return backend == kNonRendering_Backend;
}
void onPreDraw() SK_OVERRIDE {
fDst.reset(fCount);
fSrc.reset(fCount);
SkRandom rand;
for (int i = 0; i < fCount; i++) {
fSrc[i] = rand.nextU();
}
}
void onDraw(const int loops, SkCanvas*) SK_OVERRIDE {
for (int i = 0; i < loops; i++) {
fMemcpy32(fDst, fSrc, fCount);
}
}
private:
SkAutoTMalloc<uint32_t> fDst, fSrc;
int fCount;
Memcpy32 fMemcpy32;
const SkString fName;
};
template <typename Memcpy32>
static Memcpy32Bench<Memcpy32>* Bench(int count, Memcpy32 memcpy32, const char* name) {
return new Memcpy32Bench<Memcpy32>(count, memcpy32, name);
}
#define BENCH(memcpy32, count) DEF_BENCH(return Bench(count, memcpy32, #memcpy32); )
// Let the libc developers do what they think is best.
static void memcpy32_memcpy(uint32_t* dst, const uint32_t* src, int count) {
memcpy(dst, src, sizeof(uint32_t) * count);
}
BENCH(memcpy32_memcpy, 10)
BENCH(memcpy32_memcpy, 100)
BENCH(memcpy32_memcpy, 1000)
BENCH(memcpy32_memcpy, 10000)
BENCH(memcpy32_memcpy, 100000)
// Test our chosen best, from SkUtils.h
BENCH(sk_memcpy32, 10)
BENCH(sk_memcpy32, 100)
BENCH(sk_memcpy32, 1000)
BENCH(sk_memcpy32, 10000)
BENCH(sk_memcpy32, 100000)
#undef BENCH
|
