| OLD | NEW |
| 1 // Copyright (c) 2012, the Dart project authors. Please see the AUTHORS file | 1 // Copyright (c) 2012, the Dart project authors. Please see the AUTHORS file |
| 2 // for details. All rights reserved. Use of this source code is governed by a | 2 // for details. All rights reserved. Use of this source code is governed by a |
| 3 // BSD-style license that can be found in the LICENSE file. | 3 // BSD-style license that can be found in the LICENSE file. |
| 4 | 4 |
| 5 #include "vm/bitmap.h" | 5 #include "vm/bitmap.h" |
| 6 | 6 |
| 7 #include "platform/assert.h" | 7 #include "platform/assert.h" |
| 8 #include "vm/object.h" | 8 #include "vm/object.h" |
| 9 | 9 |
| 10 namespace dart { | 10 namespace dart { |
| (...skipping 36 matching lines...) Expand 10 before | Expand all | Expand 10 after Loading... |
| 47 // Bits not covered by the backing store are implicitly false. | 47 // Bits not covered by the backing store are implicitly false. |
| 48 if (!value) return; | 48 if (!value) return; |
| 49 // Grow the backing store if necessary. | 49 // Grow the backing store if necessary. |
| 50 intptr_t byte_offset = bit_offset >> kBitsPerByteLog2; | 50 intptr_t byte_offset = bit_offset >> kBitsPerByteLog2; |
| 51 if (byte_offset >= data_size_in_bytes_) { | 51 if (byte_offset >= data_size_in_bytes_) { |
| 52 uint8_t* old_data = data_; | 52 uint8_t* old_data = data_; |
| 53 intptr_t old_size = data_size_in_bytes_; | 53 intptr_t old_size = data_size_in_bytes_; |
| 54 data_size_in_bytes_ = | 54 data_size_in_bytes_ = |
| 55 Utils::RoundUp(byte_offset + 1, kIncrementSizeInBytes); | 55 Utils::RoundUp(byte_offset + 1, kIncrementSizeInBytes); |
| 56 ASSERT(data_size_in_bytes_ > 0); | 56 ASSERT(data_size_in_bytes_ > 0); |
| 57 data_ = Thread::Current()->zone()->Alloc<uint8_t>( | 57 data_ = Thread::Current()->zone()->Alloc<uint8_t>(data_size_in_bytes_); |
| 58 data_size_in_bytes_); | |
| 59 ASSERT(data_ != NULL); | 58 ASSERT(data_ != NULL); |
| 60 memmove(data_, old_data, old_size); | 59 memmove(data_, old_data, old_size); |
| 61 memset(&data_[old_size], 0, (data_size_in_bytes_ - old_size)); | 60 memset(&data_[old_size], 0, (data_size_in_bytes_ - old_size)); |
| 62 } | 61 } |
| 63 } | 62 } |
| 64 SetBit(bit_offset, value); | 63 SetBit(bit_offset, value); |
| 65 } | 64 } |
| 66 | 65 |
| 67 | 66 |
| 68 void BitmapBuilder::SetRange(intptr_t min, intptr_t max, bool value) { | 67 void BitmapBuilder::SetRange(intptr_t min, intptr_t max, bool value) { |
| (...skipping 22 matching lines...) Expand all Loading... |
| 91 ASSERT(byte_offset < data_size_in_bytes_); | 90 ASSERT(byte_offset < data_size_in_bytes_); |
| 92 intptr_t bit_remainder = bit_offset & (kBitsPerByte - 1); | 91 intptr_t bit_remainder = bit_offset & (kBitsPerByte - 1); |
| 93 uint8_t mask = 1U << bit_remainder; | 92 uint8_t mask = 1U << bit_remainder; |
| 94 ASSERT(data_ != NULL); | 93 ASSERT(data_ != NULL); |
| 95 return ((data_[byte_offset] & mask) != 0); | 94 return ((data_[byte_offset] & mask) != 0); |
| 96 } | 95 } |
| 97 | 96 |
| 98 | 97 |
| 99 void BitmapBuilder::SetBit(intptr_t bit_offset, bool value) { | 98 void BitmapBuilder::SetBit(intptr_t bit_offset, bool value) { |
| 100 if (!InRange(bit_offset)) { | 99 if (!InRange(bit_offset)) { |
| 101 FATAL1("Fatal error in BitmapBuilder::SetBit :" | 100 FATAL1( |
| 102 " invalid bit_offset, %" Pd "\n", bit_offset); | 101 "Fatal error in BitmapBuilder::SetBit :" |
| 102 " invalid bit_offset, %" Pd "\n", |
| 103 bit_offset); |
| 103 } | 104 } |
| 104 intptr_t byte_offset = bit_offset >> kBitsPerByteLog2; | 105 intptr_t byte_offset = bit_offset >> kBitsPerByteLog2; |
| 105 ASSERT(byte_offset < data_size_in_bytes_); | 106 ASSERT(byte_offset < data_size_in_bytes_); |
| 106 intptr_t bit_remainder = bit_offset & (kBitsPerByte - 1); | 107 intptr_t bit_remainder = bit_offset & (kBitsPerByte - 1); |
| 107 uint8_t mask = 1U << bit_remainder; | 108 uint8_t mask = 1U << bit_remainder; |
| 108 ASSERT(data_ != NULL); | 109 ASSERT(data_ != NULL); |
| 109 if (value) { | 110 if (value) { |
| 110 data_[byte_offset] |= mask; | 111 data_[byte_offset] |= mask; |
| 111 } else { | 112 } else { |
| 112 data_[byte_offset] &= ~mask; | 113 data_[byte_offset] &= ~mask; |
| 113 } | 114 } |
| 114 } | 115 } |
| 115 | 116 |
| 116 } // namespace dart | 117 } // namespace dart |
| OLD | NEW |