| 373 | }; |
| 374 | |
| 375 | inline PendingCounts::Handle PendingCounts::Layout::CreateHandle( |
| 376 | size_t max_pending_count, size_t max_dead_count) { |
| 377 | Handle result; |
| 378 | if ((max_pending_count > kMaxCountForPackedCounts) || |
| 379 | (max_dead_count > kMaxCountForPackedCounts)) { |
| 380 | constexpr int B = sizeof(std::atomic<LargeCounts>); |
| 381 | // Round byte offset to proper alignment |
| 382 | static_assert( |
| 383 | sizeof(std::atomic<LargeCounts>) >= alignof(std::atomic<LargeCounts>), |
| 384 | "std::atomic<LargeCounts> must be packed"); |
| 385 | int64_t offset = ((static_cast<int64_t>(next_offset_) + B - 1) / B) * B; |
| 386 | result.byte_offset_ = offset; |
| 387 | result.is_large_ = true; |
| 388 | next_offset_ = result.byte_offset_ + B; |
| 389 | } else { |
| 390 | result.byte_offset_ = next_offset_; |
| 391 | result.is_large_ = false; |
| 392 | static_assert(sizeof(std::atomic<PackedCounts>) == 1, |
| 393 | "std::atomic<PackedCounts> should be a single byte"); |
| 394 | next_offset_ += sizeof(std::atomic<PackedCounts>); |
| 395 | } |
| 396 | return result; |
| 397 | } |
| 398 | |
| 399 | } // end namespace tensorflow |
| 400 |
no outgoing calls