The Android Open Source Project | cbb1011 | 2009-03-03 19:31:44 -0800 | [diff] [blame] | 1 | /* |
| 2 | * Copyright (C) 2005 The Android Open Source Project |
| 3 | * |
| 4 | * Licensed under the Apache License, Version 2.0 (the "License"); |
| 5 | * you may not use this file except in compliance with the License. |
| 6 | * You may obtain a copy of the License at |
| 7 | * |
| 8 | * http://www.apache.org/licenses/LICENSE-2.0 |
| 9 | * |
| 10 | * Unless required by applicable law or agreed to in writing, software |
| 11 | * distributed under the License is distributed on an "AS IS" BASIS, |
| 12 | * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. |
| 13 | * See the License for the specific language governing permissions and |
| 14 | * limitations under the License. |
| 15 | */ |
| 16 | |
| 17 | #define LOG_TAG "Vector" |
| 18 | |
| 19 | #include <string.h> |
| 20 | #include <stdlib.h> |
| 21 | #include <stdio.h> |
| 22 | |
Mathias Agopian | bdf73c7 | 2012-08-09 19:39:15 -0700 | [diff] [blame] | 23 | #include <cutils/log.h> |
| 24 | |
The Android Open Source Project | cbb1011 | 2009-03-03 19:31:44 -0800 | [diff] [blame] | 25 | #include <utils/Errors.h> |
The Android Open Source Project | cbb1011 | 2009-03-03 19:31:44 -0800 | [diff] [blame] | 26 | #include <utils/VectorImpl.h> |
| 27 | |
Sergio Giro | d2529f2 | 2015-09-23 16:22:59 +0100 | [diff] [blame] | 28 | #include "SharedBuffer.h" |
| 29 | |
The Android Open Source Project | cbb1011 | 2009-03-03 19:31:44 -0800 | [diff] [blame] | 30 | /*****************************************************************************/ |
| 31 | |
| 32 | |
| 33 | namespace android { |
| 34 | |
| 35 | // ---------------------------------------------------------------------------- |
| 36 | |
| 37 | const size_t kMinVectorCapacity = 4; |
| 38 | |
| 39 | static inline size_t max(size_t a, size_t b) { |
| 40 | return a>b ? a : b; |
| 41 | } |
| 42 | |
| 43 | // ---------------------------------------------------------------------------- |
| 44 | |
| 45 | VectorImpl::VectorImpl(size_t itemSize, uint32_t flags) |
| 46 | : mStorage(0), mCount(0), mFlags(flags), mItemSize(itemSize) |
| 47 | { |
| 48 | } |
| 49 | |
| 50 | VectorImpl::VectorImpl(const VectorImpl& rhs) |
| 51 | : mStorage(rhs.mStorage), mCount(rhs.mCount), |
| 52 | mFlags(rhs.mFlags), mItemSize(rhs.mItemSize) |
| 53 | { |
| 54 | if (mStorage) { |
Mathias Agopian | e79aadd | 2012-08-31 16:20:23 -0700 | [diff] [blame] | 55 | SharedBuffer::bufferFromData(mStorage)->acquire(); |
The Android Open Source Project | cbb1011 | 2009-03-03 19:31:44 -0800 | [diff] [blame] | 56 | } |
| 57 | } |
| 58 | |
| 59 | VectorImpl::~VectorImpl() |
| 60 | { |
Mathias Agopian | bdf73c7 | 2012-08-09 19:39:15 -0700 | [diff] [blame] | 61 | ALOGW_IF(mCount, |
| 62 | "[%p] subclasses of VectorImpl must call finish_vector()" |
The Android Open Source Project | cbb1011 | 2009-03-03 19:31:44 -0800 | [diff] [blame] | 63 | " in their destructor. Leaking %d bytes.", |
| 64 | this, (int)(mCount*mItemSize)); |
| 65 | // We can't call _do_destroy() here because the vtable is already gone. |
| 66 | } |
| 67 | |
| 68 | VectorImpl& VectorImpl::operator = (const VectorImpl& rhs) |
| 69 | { |
Mathias Agopian | bdf73c7 | 2012-08-09 19:39:15 -0700 | [diff] [blame] | 70 | LOG_ALWAYS_FATAL_IF(mItemSize != rhs.mItemSize, |
The Android Open Source Project | cbb1011 | 2009-03-03 19:31:44 -0800 | [diff] [blame] | 71 | "Vector<> have different types (this=%p, rhs=%p)", this, &rhs); |
| 72 | if (this != &rhs) { |
| 73 | release_storage(); |
| 74 | if (rhs.mCount) { |
| 75 | mStorage = rhs.mStorage; |
| 76 | mCount = rhs.mCount; |
Mathias Agopian | e79aadd | 2012-08-31 16:20:23 -0700 | [diff] [blame] | 77 | SharedBuffer::bufferFromData(mStorage)->acquire(); |
The Android Open Source Project | cbb1011 | 2009-03-03 19:31:44 -0800 | [diff] [blame] | 78 | } else { |
| 79 | mStorage = 0; |
| 80 | mCount = 0; |
| 81 | } |
| 82 | } |
| 83 | return *this; |
| 84 | } |
| 85 | |
| 86 | void* VectorImpl::editArrayImpl() |
| 87 | { |
| 88 | if (mStorage) { |
Mathias Agopian | e79aadd | 2012-08-31 16:20:23 -0700 | [diff] [blame] | 89 | SharedBuffer* sb = SharedBuffer::bufferFromData(mStorage)->attemptEdit(); |
The Android Open Source Project | cbb1011 | 2009-03-03 19:31:44 -0800 | [diff] [blame] | 90 | if (sb == 0) { |
| 91 | sb = SharedBuffer::alloc(capacity() * mItemSize); |
| 92 | if (sb) { |
| 93 | _do_copy(sb->data(), mStorage, mCount); |
| 94 | release_storage(); |
| 95 | mStorage = sb->data(); |
| 96 | } |
| 97 | } |
| 98 | } |
| 99 | return mStorage; |
| 100 | } |
| 101 | |
| 102 | size_t VectorImpl::capacity() const |
| 103 | { |
| 104 | if (mStorage) { |
Mathias Agopian | e79aadd | 2012-08-31 16:20:23 -0700 | [diff] [blame] | 105 | return SharedBuffer::bufferFromData(mStorage)->size() / mItemSize; |
The Android Open Source Project | cbb1011 | 2009-03-03 19:31:44 -0800 | [diff] [blame] | 106 | } |
| 107 | return 0; |
| 108 | } |
| 109 | |
| 110 | ssize_t VectorImpl::insertVectorAt(const VectorImpl& vector, size_t index) |
| 111 | { |
Jeff Brown | 9efaaa4 | 2010-06-16 01:53:36 -0700 | [diff] [blame] | 112 | return insertArrayAt(vector.arrayImpl(), index, vector.size()); |
The Android Open Source Project | cbb1011 | 2009-03-03 19:31:44 -0800 | [diff] [blame] | 113 | } |
| 114 | |
| 115 | ssize_t VectorImpl::appendVector(const VectorImpl& vector) |
| 116 | { |
| 117 | return insertVectorAt(vector, size()); |
| 118 | } |
| 119 | |
Jeff Brown | 9efaaa4 | 2010-06-16 01:53:36 -0700 | [diff] [blame] | 120 | ssize_t VectorImpl::insertArrayAt(const void* array, size_t index, size_t length) |
| 121 | { |
| 122 | if (index > size()) |
| 123 | return BAD_INDEX; |
| 124 | void* where = _grow(index, length); |
| 125 | if (where) { |
| 126 | _do_copy(where, array, length); |
| 127 | } |
| 128 | return where ? index : (ssize_t)NO_MEMORY; |
| 129 | } |
| 130 | |
| 131 | ssize_t VectorImpl::appendArray(const void* array, size_t length) |
| 132 | { |
| 133 | return insertArrayAt(array, size(), length); |
| 134 | } |
| 135 | |
The Android Open Source Project | cbb1011 | 2009-03-03 19:31:44 -0800 | [diff] [blame] | 136 | ssize_t VectorImpl::insertAt(size_t index, size_t numItems) |
| 137 | { |
| 138 | return insertAt(0, index, numItems); |
| 139 | } |
| 140 | |
| 141 | ssize_t VectorImpl::insertAt(const void* item, size_t index, size_t numItems) |
| 142 | { |
| 143 | if (index > size()) |
| 144 | return BAD_INDEX; |
| 145 | void* where = _grow(index, numItems); |
| 146 | if (where) { |
| 147 | if (item) { |
| 148 | _do_splat(where, item, numItems); |
| 149 | } else { |
| 150 | _do_construct(where, numItems); |
| 151 | } |
| 152 | } |
| 153 | return where ? index : (ssize_t)NO_MEMORY; |
| 154 | } |
| 155 | |
| 156 | static int sortProxy(const void* lhs, const void* rhs, void* func) |
| 157 | { |
| 158 | return (*(VectorImpl::compar_t)func)(lhs, rhs); |
| 159 | } |
| 160 | |
| 161 | status_t VectorImpl::sort(VectorImpl::compar_t cmp) |
| 162 | { |
| 163 | return sort(sortProxy, (void*)cmp); |
| 164 | } |
| 165 | |
| 166 | status_t VectorImpl::sort(VectorImpl::compar_r_t cmp, void* state) |
| 167 | { |
| 168 | // the sort must be stable. we're using insertion sort which |
| 169 | // is well suited for small and already sorted arrays |
| 170 | // for big arrays, it could be better to use mergesort |
| 171 | const ssize_t count = size(); |
| 172 | if (count > 1) { |
| 173 | void* array = const_cast<void*>(arrayImpl()); |
| 174 | void* temp = 0; |
| 175 | ssize_t i = 1; |
| 176 | while (i < count) { |
| 177 | void* item = reinterpret_cast<char*>(array) + mItemSize*(i); |
| 178 | void* curr = reinterpret_cast<char*>(array) + mItemSize*(i-1); |
| 179 | if (cmp(curr, item, state) > 0) { |
| 180 | |
| 181 | if (!temp) { |
| 182 | // we're going to have to modify the array... |
| 183 | array = editArrayImpl(); |
| 184 | if (!array) return NO_MEMORY; |
| 185 | temp = malloc(mItemSize); |
| 186 | if (!temp) return NO_MEMORY; |
The Android Open Source Project | cbb1011 | 2009-03-03 19:31:44 -0800 | [diff] [blame] | 187 | item = reinterpret_cast<char*>(array) + mItemSize*(i); |
| 188 | curr = reinterpret_cast<char*>(array) + mItemSize*(i-1); |
Mathias Agopian | 15d0edc | 2010-03-29 13:45:18 -0700 | [diff] [blame] | 189 | } else { |
| 190 | _do_destroy(temp, 1); |
The Android Open Source Project | cbb1011 | 2009-03-03 19:31:44 -0800 | [diff] [blame] | 191 | } |
| 192 | |
| 193 | _do_copy(temp, item, 1); |
| 194 | |
| 195 | ssize_t j = i-1; |
| 196 | void* next = reinterpret_cast<char*>(array) + mItemSize*(i); |
| 197 | do { |
Mathias Agopian | 15d0edc | 2010-03-29 13:45:18 -0700 | [diff] [blame] | 198 | _do_destroy(next, 1); |
The Android Open Source Project | cbb1011 | 2009-03-03 19:31:44 -0800 | [diff] [blame] | 199 | _do_copy(next, curr, 1); |
| 200 | next = curr; |
| 201 | --j; |
Nick Kralevich | c76698f | 2015-08-28 06:40:23 -0700 | [diff] [blame] | 202 | curr = NULL; |
| 203 | if (j >= 0) { |
| 204 | curr = reinterpret_cast<char*>(array) + mItemSize*(j); |
| 205 | } |
The Android Open Source Project | cbb1011 | 2009-03-03 19:31:44 -0800 | [diff] [blame] | 206 | } while (j>=0 && (cmp(curr, temp, state) > 0)); |
| 207 | |
Mathias Agopian | 15d0edc | 2010-03-29 13:45:18 -0700 | [diff] [blame] | 208 | _do_destroy(next, 1); |
The Android Open Source Project | cbb1011 | 2009-03-03 19:31:44 -0800 | [diff] [blame] | 209 | _do_copy(next, temp, 1); |
| 210 | } |
| 211 | i++; |
| 212 | } |
| 213 | |
| 214 | if (temp) { |
| 215 | _do_destroy(temp, 1); |
| 216 | free(temp); |
| 217 | } |
| 218 | } |
| 219 | return NO_ERROR; |
| 220 | } |
| 221 | |
| 222 | void VectorImpl::pop() |
| 223 | { |
| 224 | if (size()) |
| 225 | removeItemsAt(size()-1, 1); |
| 226 | } |
| 227 | |
| 228 | void VectorImpl::push() |
| 229 | { |
| 230 | push(0); |
| 231 | } |
| 232 | |
| 233 | void VectorImpl::push(const void* item) |
| 234 | { |
| 235 | insertAt(item, size()); |
| 236 | } |
| 237 | |
| 238 | ssize_t VectorImpl::add() |
| 239 | { |
| 240 | return add(0); |
| 241 | } |
| 242 | |
Jeff Brown | 9efaaa4 | 2010-06-16 01:53:36 -0700 | [diff] [blame] | 243 | ssize_t VectorImpl::add(const void* item) |
The Android Open Source Project | cbb1011 | 2009-03-03 19:31:44 -0800 | [diff] [blame] | 244 | { |
Jeff Brown | 9efaaa4 | 2010-06-16 01:53:36 -0700 | [diff] [blame] | 245 | return insertAt(item, size()); |
The Android Open Source Project | cbb1011 | 2009-03-03 19:31:44 -0800 | [diff] [blame] | 246 | } |
| 247 | |
| 248 | ssize_t VectorImpl::replaceAt(size_t index) |
| 249 | { |
| 250 | return replaceAt(0, index); |
| 251 | } |
| 252 | |
| 253 | ssize_t VectorImpl::replaceAt(const void* prototype, size_t index) |
| 254 | { |
Steve Block | ae07445 | 2012-01-09 18:35:44 +0000 | [diff] [blame] | 255 | ALOG_ASSERT(index<size(), |
The Android Open Source Project | cbb1011 | 2009-03-03 19:31:44 -0800 | [diff] [blame] | 256 | "[%p] replace: index=%d, size=%d", this, (int)index, (int)size()); |
| 257 | |
Mathias Agopian | bdf73c7 | 2012-08-09 19:39:15 -0700 | [diff] [blame] | 258 | if (index >= size()) { |
| 259 | return BAD_INDEX; |
| 260 | } |
| 261 | |
The Android Open Source Project | cbb1011 | 2009-03-03 19:31:44 -0800 | [diff] [blame] | 262 | void* item = editItemLocation(index); |
Jeff Brown | bbbd761 | 2011-07-14 00:29:49 -0700 | [diff] [blame] | 263 | if (item != prototype) { |
| 264 | if (item == 0) |
| 265 | return NO_MEMORY; |
| 266 | _do_destroy(item, 1); |
| 267 | if (prototype == 0) { |
| 268 | _do_construct(item, 1); |
| 269 | } else { |
| 270 | _do_copy(item, prototype, 1); |
| 271 | } |
The Android Open Source Project | cbb1011 | 2009-03-03 19:31:44 -0800 | [diff] [blame] | 272 | } |
| 273 | return ssize_t(index); |
| 274 | } |
| 275 | |
| 276 | ssize_t VectorImpl::removeItemsAt(size_t index, size_t count) |
| 277 | { |
Steve Block | ae07445 | 2012-01-09 18:35:44 +0000 | [diff] [blame] | 278 | ALOG_ASSERT((index+count)<=size(), |
The Android Open Source Project | cbb1011 | 2009-03-03 19:31:44 -0800 | [diff] [blame] | 279 | "[%p] remove: index=%d, count=%d, size=%d", |
| 280 | this, (int)index, (int)count, (int)size()); |
| 281 | |
| 282 | if ((index+count) > size()) |
| 283 | return BAD_VALUE; |
| 284 | _shrink(index, count); |
| 285 | return index; |
| 286 | } |
| 287 | |
| 288 | void VectorImpl::finish_vector() |
| 289 | { |
| 290 | release_storage(); |
| 291 | mStorage = 0; |
| 292 | mCount = 0; |
| 293 | } |
| 294 | |
| 295 | void VectorImpl::clear() |
| 296 | { |
| 297 | _shrink(0, mCount); |
| 298 | } |
| 299 | |
| 300 | void* VectorImpl::editItemLocation(size_t index) |
| 301 | { |
Steve Block | ae07445 | 2012-01-09 18:35:44 +0000 | [diff] [blame] | 302 | ALOG_ASSERT(index<capacity(), |
Mathias Agopian | 266a7d6 | 2011-07-11 16:26:18 -0700 | [diff] [blame] | 303 | "[%p] editItemLocation: index=%d, capacity=%d, count=%d", |
The Android Open Source Project | cbb1011 | 2009-03-03 19:31:44 -0800 | [diff] [blame] | 304 | this, (int)index, (int)capacity(), (int)mCount); |
Mathias Agopian | bdf73c7 | 2012-08-09 19:39:15 -0700 | [diff] [blame] | 305 | |
| 306 | if (index < capacity()) { |
| 307 | void* buffer = editArrayImpl(); |
| 308 | if (buffer) { |
| 309 | return reinterpret_cast<char*>(buffer) + index*mItemSize; |
| 310 | } |
| 311 | } |
The Android Open Source Project | cbb1011 | 2009-03-03 19:31:44 -0800 | [diff] [blame] | 312 | return 0; |
| 313 | } |
| 314 | |
| 315 | const void* VectorImpl::itemLocation(size_t index) const |
| 316 | { |
Steve Block | ae07445 | 2012-01-09 18:35:44 +0000 | [diff] [blame] | 317 | ALOG_ASSERT(index<capacity(), |
Mathias Agopian | 266a7d6 | 2011-07-11 16:26:18 -0700 | [diff] [blame] | 318 | "[%p] itemLocation: index=%d, capacity=%d, count=%d", |
The Android Open Source Project | cbb1011 | 2009-03-03 19:31:44 -0800 | [diff] [blame] | 319 | this, (int)index, (int)capacity(), (int)mCount); |
| 320 | |
Mathias Agopian | bdf73c7 | 2012-08-09 19:39:15 -0700 | [diff] [blame] | 321 | if (index < capacity()) { |
| 322 | const void* buffer = arrayImpl(); |
| 323 | if (buffer) { |
| 324 | return reinterpret_cast<const char*>(buffer) + index*mItemSize; |
| 325 | } |
| 326 | } |
The Android Open Source Project | cbb1011 | 2009-03-03 19:31:44 -0800 | [diff] [blame] | 327 | return 0; |
| 328 | } |
| 329 | |
| 330 | ssize_t VectorImpl::setCapacity(size_t new_capacity) |
| 331 | { |
| 332 | size_t current_capacity = capacity(); |
| 333 | ssize_t amount = new_capacity - size(); |
| 334 | if (amount <= 0) { |
| 335 | // we can't reduce the capacity |
| 336 | return current_capacity; |
| 337 | } |
| 338 | SharedBuffer* sb = SharedBuffer::alloc(new_capacity * mItemSize); |
| 339 | if (sb) { |
| 340 | void* array = sb->data(); |
| 341 | _do_copy(array, mStorage, size()); |
| 342 | release_storage(); |
| 343 | mStorage = const_cast<void*>(array); |
| 344 | } else { |
| 345 | return NO_MEMORY; |
| 346 | } |
| 347 | return new_capacity; |
| 348 | } |
| 349 | |
Jesse Hall | b73559d | 2013-03-11 10:16:48 -0700 | [diff] [blame] | 350 | ssize_t VectorImpl::resize(size_t size) { |
| 351 | ssize_t result = NO_ERROR; |
| 352 | if (size > mCount) { |
| 353 | result = insertAt(mCount, size - mCount); |
| 354 | } else if (size < mCount) { |
| 355 | result = removeItemsAt(size, mCount - size); |
| 356 | } |
| 357 | return result < 0 ? result : size; |
| 358 | } |
| 359 | |
The Android Open Source Project | cbb1011 | 2009-03-03 19:31:44 -0800 | [diff] [blame] | 360 | void VectorImpl::release_storage() |
| 361 | { |
| 362 | if (mStorage) { |
Mathias Agopian | e79aadd | 2012-08-31 16:20:23 -0700 | [diff] [blame] | 363 | const SharedBuffer* sb = SharedBuffer::bufferFromData(mStorage); |
The Android Open Source Project | cbb1011 | 2009-03-03 19:31:44 -0800 | [diff] [blame] | 364 | if (sb->release(SharedBuffer::eKeepStorage) == 1) { |
| 365 | _do_destroy(mStorage, mCount); |
| 366 | SharedBuffer::dealloc(sb); |
| 367 | } |
| 368 | } |
| 369 | } |
| 370 | |
| 371 | void* VectorImpl::_grow(size_t where, size_t amount) |
| 372 | { |
Steve Block | b37fbe9 | 2011-10-20 11:56:00 +0100 | [diff] [blame] | 373 | // ALOGV("_grow(this=%p, where=%d, amount=%d) count=%d, capacity=%d", |
The Android Open Source Project | cbb1011 | 2009-03-03 19:31:44 -0800 | [diff] [blame] | 374 | // this, (int)where, (int)amount, (int)mCount, (int)capacity()); |
| 375 | |
Steve Block | ae07445 | 2012-01-09 18:35:44 +0000 | [diff] [blame] | 376 | ALOG_ASSERT(where <= mCount, |
Jeff Brown | aa5daed | 2011-07-13 22:22:02 -0700 | [diff] [blame] | 377 | "[%p] _grow: where=%d, amount=%d, count=%d", |
| 378 | this, (int)where, (int)amount, (int)mCount); // caller already checked |
| 379 | |
The Android Open Source Project | cbb1011 | 2009-03-03 19:31:44 -0800 | [diff] [blame] | 380 | const size_t new_size = mCount + amount; |
| 381 | if (capacity() < new_size) { |
| 382 | const size_t new_capacity = max(kMinVectorCapacity, ((new_size*3)+1)/2); |
Steve Block | b37fbe9 | 2011-10-20 11:56:00 +0100 | [diff] [blame] | 383 | // ALOGV("grow vector %p, new_capacity=%d", this, (int)new_capacity); |
The Android Open Source Project | cbb1011 | 2009-03-03 19:31:44 -0800 | [diff] [blame] | 384 | if ((mStorage) && |
| 385 | (mCount==where) && |
| 386 | (mFlags & HAS_TRIVIAL_COPY) && |
| 387 | (mFlags & HAS_TRIVIAL_DTOR)) |
| 388 | { |
Mathias Agopian | e79aadd | 2012-08-31 16:20:23 -0700 | [diff] [blame] | 389 | const SharedBuffer* cur_sb = SharedBuffer::bufferFromData(mStorage); |
The Android Open Source Project | cbb1011 | 2009-03-03 19:31:44 -0800 | [diff] [blame] | 390 | SharedBuffer* sb = cur_sb->editResize(new_capacity * mItemSize); |
Shuo Gao | eb0eb4f | 2013-10-17 11:36:11 +0800 | [diff] [blame] | 391 | if (sb) { |
| 392 | mStorage = sb->data(); |
| 393 | } else { |
| 394 | return NULL; |
| 395 | } |
The Android Open Source Project | cbb1011 | 2009-03-03 19:31:44 -0800 | [diff] [blame] | 396 | } else { |
| 397 | SharedBuffer* sb = SharedBuffer::alloc(new_capacity * mItemSize); |
| 398 | if (sb) { |
| 399 | void* array = sb->data(); |
Jeff Brown | bbbd761 | 2011-07-14 00:29:49 -0700 | [diff] [blame] | 400 | if (where != 0) { |
The Android Open Source Project | cbb1011 | 2009-03-03 19:31:44 -0800 | [diff] [blame] | 401 | _do_copy(array, mStorage, where); |
| 402 | } |
Jeff Brown | bbbd761 | 2011-07-14 00:29:49 -0700 | [diff] [blame] | 403 | if (where != mCount) { |
The Android Open Source Project | cbb1011 | 2009-03-03 19:31:44 -0800 | [diff] [blame] | 404 | const void* from = reinterpret_cast<const uint8_t *>(mStorage) + where*mItemSize; |
| 405 | void* dest = reinterpret_cast<uint8_t *>(array) + (where+amount)*mItemSize; |
| 406 | _do_copy(dest, from, mCount-where); |
| 407 | } |
| 408 | release_storage(); |
| 409 | mStorage = const_cast<void*>(array); |
Shuo Gao | eb0eb4f | 2013-10-17 11:36:11 +0800 | [diff] [blame] | 410 | } else { |
| 411 | return NULL; |
The Android Open Source Project | cbb1011 | 2009-03-03 19:31:44 -0800 | [diff] [blame] | 412 | } |
| 413 | } |
| 414 | } else { |
Mathias Agopian | 03b168a | 2012-05-17 16:52:21 -0700 | [diff] [blame] | 415 | void* array = editArrayImpl(); |
Jeff Brown | bbbd761 | 2011-07-14 00:29:49 -0700 | [diff] [blame] | 416 | if (where != mCount) { |
The Android Open Source Project | cbb1011 | 2009-03-03 19:31:44 -0800 | [diff] [blame] | 417 | const void* from = reinterpret_cast<const uint8_t *>(array) + where*mItemSize; |
Jeff Brown | bbbd761 | 2011-07-14 00:29:49 -0700 | [diff] [blame] | 418 | void* to = reinterpret_cast<uint8_t *>(array) + (where+amount)*mItemSize; |
| 419 | _do_move_forward(to, from, mCount - where); |
The Android Open Source Project | cbb1011 | 2009-03-03 19:31:44 -0800 | [diff] [blame] | 420 | } |
| 421 | } |
Jeff Brown | bbbd761 | 2011-07-14 00:29:49 -0700 | [diff] [blame] | 422 | mCount = new_size; |
The Android Open Source Project | cbb1011 | 2009-03-03 19:31:44 -0800 | [diff] [blame] | 423 | void* free_space = const_cast<void*>(itemLocation(where)); |
| 424 | return free_space; |
| 425 | } |
| 426 | |
| 427 | void VectorImpl::_shrink(size_t where, size_t amount) |
| 428 | { |
| 429 | if (!mStorage) |
| 430 | return; |
| 431 | |
Steve Block | b37fbe9 | 2011-10-20 11:56:00 +0100 | [diff] [blame] | 432 | // ALOGV("_shrink(this=%p, where=%d, amount=%d) count=%d, capacity=%d", |
The Android Open Source Project | cbb1011 | 2009-03-03 19:31:44 -0800 | [diff] [blame] | 433 | // this, (int)where, (int)amount, (int)mCount, (int)capacity()); |
| 434 | |
Steve Block | ae07445 | 2012-01-09 18:35:44 +0000 | [diff] [blame] | 435 | ALOG_ASSERT(where + amount <= mCount, |
Jeff Brown | aa5daed | 2011-07-13 22:22:02 -0700 | [diff] [blame] | 436 | "[%p] _shrink: where=%d, amount=%d, count=%d", |
| 437 | this, (int)where, (int)amount, (int)mCount); // caller already checked |
The Android Open Source Project | cbb1011 | 2009-03-03 19:31:44 -0800 | [diff] [blame] | 438 | |
| 439 | const size_t new_size = mCount - amount; |
| 440 | if (new_size*3 < capacity()) { |
| 441 | const size_t new_capacity = max(kMinVectorCapacity, new_size*2); |
Steve Block | b37fbe9 | 2011-10-20 11:56:00 +0100 | [diff] [blame] | 442 | // ALOGV("shrink vector %p, new_capacity=%d", this, (int)new_capacity); |
Jeff Brown | bbbd761 | 2011-07-14 00:29:49 -0700 | [diff] [blame] | 443 | if ((where == new_size) && |
The Android Open Source Project | cbb1011 | 2009-03-03 19:31:44 -0800 | [diff] [blame] | 444 | (mFlags & HAS_TRIVIAL_COPY) && |
| 445 | (mFlags & HAS_TRIVIAL_DTOR)) |
| 446 | { |
Mathias Agopian | e79aadd | 2012-08-31 16:20:23 -0700 | [diff] [blame] | 447 | const SharedBuffer* cur_sb = SharedBuffer::bufferFromData(mStorage); |
The Android Open Source Project | cbb1011 | 2009-03-03 19:31:44 -0800 | [diff] [blame] | 448 | SharedBuffer* sb = cur_sb->editResize(new_capacity * mItemSize); |
Shuo Gao | eb0eb4f | 2013-10-17 11:36:11 +0800 | [diff] [blame] | 449 | if (sb) { |
| 450 | mStorage = sb->data(); |
| 451 | } else { |
| 452 | return; |
| 453 | } |
The Android Open Source Project | cbb1011 | 2009-03-03 19:31:44 -0800 | [diff] [blame] | 454 | } else { |
| 455 | SharedBuffer* sb = SharedBuffer::alloc(new_capacity * mItemSize); |
| 456 | if (sb) { |
| 457 | void* array = sb->data(); |
Jeff Brown | bbbd761 | 2011-07-14 00:29:49 -0700 | [diff] [blame] | 458 | if (where != 0) { |
The Android Open Source Project | cbb1011 | 2009-03-03 19:31:44 -0800 | [diff] [blame] | 459 | _do_copy(array, mStorage, where); |
| 460 | } |
Jeff Brown | bbbd761 | 2011-07-14 00:29:49 -0700 | [diff] [blame] | 461 | if (where != new_size) { |
The Android Open Source Project | cbb1011 | 2009-03-03 19:31:44 -0800 | [diff] [blame] | 462 | const void* from = reinterpret_cast<const uint8_t *>(mStorage) + (where+amount)*mItemSize; |
| 463 | void* dest = reinterpret_cast<uint8_t *>(array) + where*mItemSize; |
Jeff Brown | bbbd761 | 2011-07-14 00:29:49 -0700 | [diff] [blame] | 464 | _do_copy(dest, from, new_size - where); |
The Android Open Source Project | cbb1011 | 2009-03-03 19:31:44 -0800 | [diff] [blame] | 465 | } |
| 466 | release_storage(); |
| 467 | mStorage = const_cast<void*>(array); |
Shuo Gao | eb0eb4f | 2013-10-17 11:36:11 +0800 | [diff] [blame] | 468 | } else{ |
| 469 | return; |
The Android Open Source Project | cbb1011 | 2009-03-03 19:31:44 -0800 | [diff] [blame] | 470 | } |
| 471 | } |
| 472 | } else { |
Jeff Brown | bbbd761 | 2011-07-14 00:29:49 -0700 | [diff] [blame] | 473 | void* array = editArrayImpl(); |
The Android Open Source Project | cbb1011 | 2009-03-03 19:31:44 -0800 | [diff] [blame] | 474 | void* to = reinterpret_cast<uint8_t *>(array) + where*mItemSize; |
| 475 | _do_destroy(to, amount); |
Jeff Brown | bbbd761 | 2011-07-14 00:29:49 -0700 | [diff] [blame] | 476 | if (where != new_size) { |
The Android Open Source Project | cbb1011 | 2009-03-03 19:31:44 -0800 | [diff] [blame] | 477 | const void* from = reinterpret_cast<uint8_t *>(array) + (where+amount)*mItemSize; |
Jeff Brown | bbbd761 | 2011-07-14 00:29:49 -0700 | [diff] [blame] | 478 | _do_move_backward(to, from, new_size - where); |
The Android Open Source Project | cbb1011 | 2009-03-03 19:31:44 -0800 | [diff] [blame] | 479 | } |
| 480 | } |
Jeff Brown | bbbd761 | 2011-07-14 00:29:49 -0700 | [diff] [blame] | 481 | mCount = new_size; |
The Android Open Source Project | cbb1011 | 2009-03-03 19:31:44 -0800 | [diff] [blame] | 482 | } |
| 483 | |
| 484 | size_t VectorImpl::itemSize() const { |
| 485 | return mItemSize; |
| 486 | } |
| 487 | |
| 488 | void VectorImpl::_do_construct(void* storage, size_t num) const |
| 489 | { |
| 490 | if (!(mFlags & HAS_TRIVIAL_CTOR)) { |
| 491 | do_construct(storage, num); |
| 492 | } |
| 493 | } |
| 494 | |
| 495 | void VectorImpl::_do_destroy(void* storage, size_t num) const |
| 496 | { |
| 497 | if (!(mFlags & HAS_TRIVIAL_DTOR)) { |
| 498 | do_destroy(storage, num); |
| 499 | } |
| 500 | } |
| 501 | |
| 502 | void VectorImpl::_do_copy(void* dest, const void* from, size_t num) const |
| 503 | { |
| 504 | if (!(mFlags & HAS_TRIVIAL_COPY)) { |
| 505 | do_copy(dest, from, num); |
| 506 | } else { |
| 507 | memcpy(dest, from, num*itemSize()); |
| 508 | } |
| 509 | } |
| 510 | |
| 511 | void VectorImpl::_do_splat(void* dest, const void* item, size_t num) const { |
| 512 | do_splat(dest, item, num); |
| 513 | } |
| 514 | |
| 515 | void VectorImpl::_do_move_forward(void* dest, const void* from, size_t num) const { |
| 516 | do_move_forward(dest, from, num); |
| 517 | } |
| 518 | |
| 519 | void VectorImpl::_do_move_backward(void* dest, const void* from, size_t num) const { |
| 520 | do_move_backward(dest, from, num); |
| 521 | } |
| 522 | |
The Android Open Source Project | cbb1011 | 2009-03-03 19:31:44 -0800 | [diff] [blame] | 523 | /*****************************************************************************/ |
| 524 | |
| 525 | SortedVectorImpl::SortedVectorImpl(size_t itemSize, uint32_t flags) |
| 526 | : VectorImpl(itemSize, flags) |
| 527 | { |
| 528 | } |
| 529 | |
| 530 | SortedVectorImpl::SortedVectorImpl(const VectorImpl& rhs) |
| 531 | : VectorImpl(rhs) |
| 532 | { |
| 533 | } |
| 534 | |
| 535 | SortedVectorImpl::~SortedVectorImpl() |
| 536 | { |
| 537 | } |
| 538 | |
| 539 | SortedVectorImpl& SortedVectorImpl::operator = (const SortedVectorImpl& rhs) |
| 540 | { |
| 541 | return static_cast<SortedVectorImpl&>( VectorImpl::operator = (static_cast<const VectorImpl&>(rhs)) ); |
| 542 | } |
| 543 | |
| 544 | ssize_t SortedVectorImpl::indexOf(const void* item) const |
| 545 | { |
| 546 | return _indexOrderOf(item); |
| 547 | } |
| 548 | |
| 549 | size_t SortedVectorImpl::orderOf(const void* item) const |
| 550 | { |
| 551 | size_t o; |
| 552 | _indexOrderOf(item, &o); |
| 553 | return o; |
| 554 | } |
| 555 | |
| 556 | ssize_t SortedVectorImpl::_indexOrderOf(const void* item, size_t* order) const |
| 557 | { |
Nick Kralevich | 1f28698 | 2015-08-22 14:27:03 -0700 | [diff] [blame] | 558 | if (order) *order = 0; |
| 559 | if (isEmpty()) { |
| 560 | return NAME_NOT_FOUND; |
| 561 | } |
The Android Open Source Project | cbb1011 | 2009-03-03 19:31:44 -0800 | [diff] [blame] | 562 | // binary search |
| 563 | ssize_t err = NAME_NOT_FOUND; |
| 564 | ssize_t l = 0; |
| 565 | ssize_t h = size()-1; |
| 566 | ssize_t mid; |
| 567 | const void* a = arrayImpl(); |
| 568 | const size_t s = itemSize(); |
| 569 | while (l <= h) { |
| 570 | mid = l + (h - l)/2; |
| 571 | const void* const curr = reinterpret_cast<const char *>(a) + (mid*s); |
| 572 | const int c = do_compare(curr, item); |
| 573 | if (c == 0) { |
| 574 | err = l = mid; |
| 575 | break; |
| 576 | } else if (c < 0) { |
| 577 | l = mid + 1; |
| 578 | } else { |
| 579 | h = mid - 1; |
| 580 | } |
| 581 | } |
| 582 | if (order) *order = l; |
| 583 | return err; |
| 584 | } |
| 585 | |
| 586 | ssize_t SortedVectorImpl::add(const void* item) |
| 587 | { |
| 588 | size_t order; |
| 589 | ssize_t index = _indexOrderOf(item, &order); |
| 590 | if (index < 0) { |
| 591 | index = VectorImpl::insertAt(item, order, 1); |
| 592 | } else { |
| 593 | index = VectorImpl::replaceAt(item, index); |
| 594 | } |
| 595 | return index; |
| 596 | } |
| 597 | |
| 598 | ssize_t SortedVectorImpl::merge(const VectorImpl& vector) |
| 599 | { |
| 600 | // naive merge... |
| 601 | if (!vector.isEmpty()) { |
| 602 | const void* buffer = vector.arrayImpl(); |
| 603 | const size_t is = itemSize(); |
| 604 | size_t s = vector.size(); |
| 605 | for (size_t i=0 ; i<s ; i++) { |
| 606 | ssize_t err = add( reinterpret_cast<const char*>(buffer) + i*is ); |
| 607 | if (err<0) { |
| 608 | return err; |
| 609 | } |
| 610 | } |
| 611 | } |
| 612 | return NO_ERROR; |
| 613 | } |
| 614 | |
| 615 | ssize_t SortedVectorImpl::merge(const SortedVectorImpl& vector) |
| 616 | { |
| 617 | // we've merging a sorted vector... nice! |
| 618 | ssize_t err = NO_ERROR; |
| 619 | if (!vector.isEmpty()) { |
| 620 | // first take care of the case where the vectors are sorted together |
| 621 | if (do_compare(vector.itemLocation(vector.size()-1), arrayImpl()) <= 0) { |
| 622 | err = VectorImpl::insertVectorAt(static_cast<const VectorImpl&>(vector), 0); |
| 623 | } else if (do_compare(vector.arrayImpl(), itemLocation(size()-1)) >= 0) { |
| 624 | err = VectorImpl::appendVector(static_cast<const VectorImpl&>(vector)); |
| 625 | } else { |
| 626 | // this could be made a little better |
| 627 | err = merge(static_cast<const VectorImpl&>(vector)); |
| 628 | } |
| 629 | } |
| 630 | return err; |
| 631 | } |
| 632 | |
| 633 | ssize_t SortedVectorImpl::remove(const void* item) |
| 634 | { |
| 635 | ssize_t i = indexOf(item); |
| 636 | if (i>=0) { |
| 637 | VectorImpl::removeItemsAt(i, 1); |
| 638 | } |
| 639 | return i; |
| 640 | } |
| 641 | |
The Android Open Source Project | cbb1011 | 2009-03-03 19:31:44 -0800 | [diff] [blame] | 642 | /*****************************************************************************/ |
| 643 | |
| 644 | }; // namespace android |
| 645 | |