Method allocateZeroFilled

bolt/common/memory/MemoryPool.cpp:613–635

  CHECK_AND_INC_MEM_OP_STATS(this, Allocs);
  const auto size = sizeEach * numEntries;
  auto alignmentValue = alignment.has_value() ? alignment.value() : alignment_;
  const auto alignedSize = sizeAlign(size, alignmentValue);
  reserve(alignedSize);
  void* buffer = allocator_->allocateZeroFilled(alignedSize);
  if (FOLLY_UNLIKELY(buffer == nullptr)) {
    release(alignedSize);
    handleAllocationFailure(fmt::format(
        "{} failed with {} entries and {} each from {} {}",
        __FUNCTION__,
        numEntries,
        succinctBytes(sizeEach),
        toString(),
        allocator_->getAndClearFailureMessage()));
  }
  RECORD_ALLOC(buffer, size);
  return buffer;
}

void* MemoryPoolImpl::reallocate(
    void* p,
    int64_t size,
    int64_t newSize,
    std::optional<uint8_t> alignment) {
  CHECK_AND_INC_MEM_OP_STATS(this, Allocs);
  auto alignmentValue = alignment.has_value() ? alignment.value() : alignment_;
  const auto alignedNewSize = sizeAlign(newSize, alignmentValue);