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# tbb::spin_mutex Class Reference
[Synchronization]

A lock that occupies a single byte. More...

`#include <spin_mutex.h>`

List of all members.

## Public Member Functions
| spin_mutex ()
| Construct unacquired lock.
void __TBB_EXPORTED_METHOD | internal_construct ()
void | lock ()
| Acquire lock.
bool | try_lock ()
| Try acquiring lock (non-blocking).
void | unlock ()
| Release lock.
## Static Public Attributes
static const bool | is_rw_mutex = false
static const bool | is_recursive_mutex = false
static const bool | is_fair_mutex = false
## Friends
class | scoped_lock
## Classes
class | scoped_lock
| Represents acquisition of a mutex. More...

## Detailed Description

A lock that occupies a single byte.

A spin_mutex is a spin mutex that fits in a single byte. It should be used only for locking short critical sections (typically less than 20 instructions) when fairness is not an issue. If zero-initialized, the mutex is considered unheld.

## Constructor & Destructor Documentation

tbb::spin_mutex::spin_mutex | ( |  | ) | `[inline]`

Construct unacquired lock.

Equivalent to zero-initialization of *this.

## Member Function Documentation

bool tbb::spin_mutex::try_lock | ( |  | ) | `[inline]`

Try acquiring lock (non-blocking).

Return true if lock acquired; false otherwise.

The documentation for this class was generated from the following file:

- spin_mutex.h

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