RTEMS: SMP Barriers

| RTEMS 5.4-rc2

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Files | Data Structures | Macros | Functions
SMP Barriers
Internal » SuperCore

The SMP barrier provides barrier synchronization for SMP systems at the lowest level. More...

## Files
file | smpbarrier.h
| SMP Barrier API.

## Data Structures
struct | SMP_barrier_Control
| SMP barrier control. More...
struct | SMP_barrier_State
| SMP barrier per-thread state. More...

## Macros
#define | SMP_BARRIER_CONTROL_INITIALIZER { ATOMIC_INITIALIZER_UINT( 0U ), ATOMIC_INITIALIZER_UINT( 0U ) }
| SMP barrier control initializer for static initialization.
#define | SMP_BARRIER_STATE_INITIALIZER { 0U }
| SMP barrier per-thread state initializer for static initialization.

## Functions
bool | _SMP_barrier_Wait (SMP_barrier_Control *control, SMP_barrier_State *state, unsigned int count)
| Waits on the SMP barrier until count threads rendezvoused.

## Detailed Description

The SMP barrier provides barrier synchronization for SMP systems at the lowest level.

The SMP barrier is implemented as a sense barrier, see also Herlihy and Shavit, "The Art of Multiprocessor Programming", 17.3 Sense-Reversing Barrier.

## Function Documentation

## ◆ _SMP_barrier_Wait()

bool _SMP_barrier_Wait | ( | SMP_barrier_Control * | control,
|  | SMP_barrier_State * | state,
|  | unsigned int | count
| ) |  |

Waits on the SMP barrier until count threads rendezvoused.

Parameters

  [in,out] | control | The SMP barrier control.
  [in,out] | state | The SMP barrier per-thread state.
  | count | The thread count bound to rendezvous.

Return values

  true | This processor performed the barrier release.
  false | This processor did not performe the barrier release.