typedef spin_rw_mutex segment_mutex_t;

//! Type of a hash code.

typedef size_t hashcode_t;

//! Log2 of n_segment

static const size_t n_segment_bits = 6;

//! Maximum size of array of chains

static const size_t max_physical_size = size_t(1)<<(8*sizeof(hashcode_t)-n_segment_bits);

//! Mutex that protects this segment

segment_mutex_t my_mutex;

// Number of nodes

atomic<size_t> my_logical_size;

// Size of chains

/** Always zero or a power of two */

size_t my_physical_size;

//! True if my_logical_size>=my_physical_size.

/** Used to support Intel(R) Thread Checker. */

bool __TBB_EXPORTED_METHOD internal_grow_predicate() const;

// Intel(R) Thread Checker considers the following reads to be races, so we hide them in the

// library so that Intel(R) Thread Checker will ignore them. The reads are used in a double-check

// context, so the program is nonetheless correct despite the race.

return my_logical_size >= my_physical_size && my_physical_size < max_physical_size;