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counter_t Class Reference
[Thread-safe counter]

A thread safe counter. More...

#include <counter.hpp>

List of all members.

Public Member Functions

 counter_t ()
bool decrement ()
void increment ()
bool is_one () const

Detailed Description

A counter_t is a noncopyable thread safe counter, useful for managing the reference count of a shared resource.


counter_t wraps reference count operations that require thread safety into a single class. While this does not guarantee client code will be thread safe, it helps to take a step in that direction. It also cleans up client code and keeps thread-handling scoped to a single file. Consider copy_on_write as an example class that leverages counter_t.

The counter_t class is thread safe when compiled with BOOST_HAS_THREADS defined.

Definition at line 74 of file counter.hpp.

Constructor & Destructor Documentation

counter_t (  )

Default constructor. The counter is initialized to 1.

Definition at line 80 of file counter.hpp.

Member Function Documentation

bool decrement (  )

Decrements the counter by one.

true if the counter is zero at the end of this operation; false otherwise.

Definition at line 90 of file counter.hpp.

void increment (  )

Increments the counter by one.

Definition at line 85 of file counter.hpp.

bool is_one (  ) const

Checks to see if the counter is one.

true if the counter is one; false otherwise.

Definition at line 95 of file counter.hpp.

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