Metric read_bw_ = {0.0, 0, nullptr};
Metric write_bw_ = {0.0, 0, nullptr};
double readwrite_bw_ = -1; /* readwrite constraint bound, usually max(read, write) */
+ std::atomic_int_fast32_t refcount_{0};
void apply_sharing_policy_cfg();
explicit DiskImpl(const std::string& name, double read_bandwidth, double write_bandwidth);
DiskImpl(const DiskImpl&) = delete;
DiskImpl& operator=(const DiskImpl&) = delete;
+ friend void intrusive_ptr_add_ref(DiskImpl* disk)
+ {
+ disk->refcount_.fetch_add(1, std::memory_order_acq_rel);
+ }
+ friend void intrusive_ptr_release(DiskImpl* disk)
+ {
+ if (disk->refcount_.fetch_sub(1, std::memory_order_release) == 1) {
+ std::atomic_thread_fence(std::memory_order_acquire);
+ delete disk;
+ }
+ }
/** @brief Public interface */
const s4u::Disk* get_iface() const { return &piface_; }