storage/allocator/ssd/ssd_block_allocator.h
| Line | Branch | Exec | Source |
|---|---|---|---|
| 1 | #pragma once | ||
| 2 | |||
| 3 | #include <cstddef> | ||
| 4 | #include <cstdint> | ||
| 5 | #include <vector> | ||
| 6 | |||
| 7 | #include "base/factory.h" | ||
| 8 | #include "storage/kv_engine/base_kv.h" | ||
| 9 | |||
| 10 | class SsdBlockAllocator { | ||
| 11 | public: | ||
| 12 | struct ReadEntry { | ||
| 13 | uint64_t handle; | ||
| 14 | void* out_buf; | ||
| 15 | }; | ||
| 16 | |||
| 17 | struct WriteEntry { | ||
| 18 | const void* data; | ||
| 19 | size_t data_size; | ||
| 20 | }; | ||
| 21 | |||
| 22 | 660 | virtual ~SsdBlockAllocator() = default; | |
| 23 | |||
| 24 | virtual uint64_t Alloc(size_t data_size) = 0; | ||
| 25 | virtual void Free(uint64_t handle) = 0; | ||
| 26 | virtual void Write(uint64_t handle, const void* data, size_t data_size) = 0; | ||
| 27 | virtual size_t Read(uint64_t handle, void* out_buf, size_t buf_size) = 0; | ||
| 28 | virtual uint64_t AllocAndWrite(const void* data, size_t data_size) = 0; | ||
| 29 | virtual size_t SlotCapacity(uint64_t handle) const = 0; | ||
| 30 | |||
| 31 | 412 | virtual void BatchRead(const std::vector<ReadEntry>& entries, | |
| 32 | std::vector<size_t>& out_sizes) { | ||
| 33 | 412 | out_sizes.resize(entries.size()); | |
| 34 |
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21978 | for (size_t i = 0; i < entries.size(); ++i) { |
| 35 | 21566 | out_sizes[i] = Read(entries[i].handle, | |
| 36 | 21566 | entries[i].out_buf, | |
| 37 | 21566 | SlotCapacity(entries[i].handle)); | |
| 38 | } | ||
| 39 | 412 | } | |
| 40 | |||
| 41 | virtual std::vector<uint64_t> | ||
| 42 | 110 | BatchAllocAndWrite(const std::vector<WriteEntry>& entries) { | |
| 43 | 110 | std::vector<uint64_t> handles; | |
| 44 |
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110 | handles.reserve(entries.size()); |
| 45 |
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494 | for (const auto& entry : entries) { |
| 46 |
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384 | handles.push_back(AllocAndWrite(entry.data, entry.data_size)); |
| 47 | } | ||
| 48 | 110 | return handles; | |
| 49 | ✗ | } | |
| 50 | |||
| 51 | static constexpr uint64_t kInvalidHandle = UINT64_MAX; | ||
| 52 | }; | ||
| 53 |