| 53 | // TODO: use writeAt |
| 54 | |
| 55 | int sliceBuffer::writeAt(const uint8_t *buffer, int size, uint64_t offset) |
| 56 | { |
| 57 | // AF_LOGD("write size is %d write pos is %" |
| 58 | // PRIu64 |
| 59 | // "\n", size, offset); |
| 60 | int curNum = static_cast<int>(offset / mSliceSize); |
| 61 | uint64_t startPos = offset % mSliceSize; |
| 62 | |
| 63 | if (startPos > 0) { |
| 64 | curNum++; |
| 65 | startPos = mSliceSize * curNum - offset; |
| 66 | } |
| 67 | |
| 68 | // AF_LOGD("write %d slice skip %d data\n", curNum, startPos); |
| 69 | // AF_LOGD("mSliceCount is %" PRIu32"\n", mSliceCount); |
| 70 | bool isLastSlice = curNum == mSliceCount - 1; |
| 71 | |
| 72 | if (size - startPos < mSliceSize && !isLastSlice) { |
| 73 | return 0; |
| 74 | } |
| 75 | |
| 76 | int beforePos = static_cast<int>(startPos); |
| 77 | size -= startPos; |
| 78 | |
| 79 | for (int i = curNum; i < mSliceCount; ++i) { |
| 80 | ADD_LOCK; |
| 81 | |
| 82 | if (mSlices[i] == nullptr) { |
| 83 | if (mManager) { |
| 84 | mSlices[i] = mManager->getSlice(mSliceSize, i * mSliceSize, *this); |
| 85 | } else { |
| 86 | mSlices[i] = new slice(mSliceSize, i * mSliceSize); |
| 87 | } |
| 88 | |
| 89 | if (nullptr != mSlices[i]) { |
| 90 | mSliceCountGot++; |
| 91 | } |
| 92 | } |
| 93 | |
| 94 | isLastSlice = curNum == mSliceCount - 1; |
| 95 | int writeSize = (int) MIN(mSliceSize, size); |
| 96 | |
| 97 | if (size - startPos < mSliceSize && !isLastSlice) { |
| 98 | break; |
| 99 | } |
| 100 | |
| 101 | if ((nullptr != mSlices[i]) |
| 102 | && (0 < mSlices[i]->getRemainSize())) { |
| 103 | writeSize = mSlices[i]->write(buffer + startPos, writeSize); |
| 104 | } else { |
| 105 | AF_LOGI("slice %d is filed\n", i); |
| 106 | } |
| 107 | |
| 108 | startPos += writeSize; |
| 109 | size -= writeSize; |
| 110 | |
| 111 | if (size <= 0) { |
| 112 | break; |