gfx/skia/trunk/src/utils/SkBitSet.cpp@129ffea94266
gfx/skia/trunk/src/utils/SkBitSet.cpp
Sat, 03 Jan 2015 20:18:00 +0100
- author
- Michael Schloh von Bennewitz <michael@schloh.com>
- date
- Sat, 03 Jan 2015 20:18:00 +0100
- branch
- TOR_BUG_3246
- changeset 7
- 129ffea94266
- permissions
- -rwxr-xr-x
Conditionally enable double key logic according to:
private browsing mode or privacy.thirdparty.isolate preference and
implement in GetCookieStringCommon and FindCookie where it counts...
With some reservations of how to convince FindCookie users to test
condition and pass a nullptr when disabling double key logic.
2 /*
3 * Copyright 2011 Google Inc.
4 *
5 * Use of this source code is governed by a BSD-style license that can be
6 * found in the LICENSE file.
7 */
10 #include "SkBitSet.h"
12 SkBitSet::SkBitSet(int numberOfBits)
13 : fBitData(NULL), fDwordCount(0), fBitCount(numberOfBits) {
14 SkASSERT(numberOfBits > 0);
15 // Round up size to 32-bit boundary.
16 fDwordCount = (numberOfBits + 31) / 32;
17 fBitData.set(malloc(fDwordCount * sizeof(uint32_t)));
18 clearAll();
19 }
21 SkBitSet::SkBitSet(const SkBitSet& source)
22 : fBitData(NULL), fDwordCount(0), fBitCount(0) {
23 *this = source;
24 }
26 SkBitSet& SkBitSet::operator=(const SkBitSet& rhs) {
27 if (this == &rhs) {
28 return *this;
29 }
30 fBitCount = rhs.fBitCount;
31 fBitData.free();
32 fDwordCount = rhs.fDwordCount;
33 fBitData.set(malloc(fDwordCount * sizeof(uint32_t)));
34 memcpy(fBitData.get(), rhs.fBitData.get(), fDwordCount * sizeof(uint32_t));
35 return *this;
36 }
38 bool SkBitSet::operator==(const SkBitSet& rhs) {
39 if (fBitCount == rhs.fBitCount) {
40 if (fBitData.get() != NULL) {
41 return (memcmp(fBitData.get(), rhs.fBitData.get(),
42 fDwordCount * sizeof(uint32_t)) == 0);
43 }
44 return true;
45 }
46 return false;
47 }
49 bool SkBitSet::operator!=(const SkBitSet& rhs) {
50 return !(*this == rhs);
51 }
53 void SkBitSet::clearAll() {
54 if (fBitData.get() != NULL) {
55 sk_bzero(fBitData.get(), fDwordCount * sizeof(uint32_t));
56 }
57 }
59 void SkBitSet::setBit(int index, bool value) {
60 uint32_t mask = 1 << (index % 32);
61 if (value) {
62 *(internalGet(index)) |= mask;
63 } else {
64 *(internalGet(index)) &= ~mask;
65 }
66 }
68 bool SkBitSet::isBitSet(int index) const {
69 uint32_t mask = 1 << (index % 32);
70 return 0 != (*internalGet(index) & mask);
71 }
73 bool SkBitSet::orBits(const SkBitSet& source) {
74 if (fBitCount != source.fBitCount) {
75 return false;
76 }
77 uint32_t* targetBitmap = internalGet(0);
78 uint32_t* sourceBitmap = source.internalGet(0);
79 for (size_t i = 0; i < fDwordCount; ++i) {
80 targetBitmap[i] |= sourceBitmap[i];
81 }
82 return true;
83 }
