Barrier Services APIs

Functions
static ALWAYS_INLINE void	barrier_dmem_fence_full (void)
	Full/sequentially-consistent data memory barrier.
static ALWAYS_INLINE void	barrier_dsync_fence_full (void)
	Full/sequentially-consistent data synchronization barrier.
static ALWAYS_INLINE void	barrier_isync_fence_full (void)
	Full/sequentially-consistent instruction synchronization barrier.

Detailed Description

Since

3.4

Version

0.1.0

Function Documentation

barrier_dmem_fence_full()

static ALWAYS_INLINE void barrier_dmem_fence_full ( void )

static

#include <zephyr/sys/barrier.h>

Full/sequentially-consistent data memory barrier.

This routine acts as a synchronization fence between threads and prevents re-ordering of data accesses instructions across the barrier instruction.

barrier_dsync_fence_full()

static ALWAYS_INLINE void barrier_dsync_fence_full ( void )

static

#include <zephyr/sys/barrier.h>

Full/sequentially-consistent data synchronization barrier.

This routine acts as a synchronization fence between threads and prevents re-ordering of data accesses instructions across the barrier instruction like barrier_dmem_fence_full(), but has the additional effect of blocking execution of any further instructions, not just loads or stores, or both, until synchronization is complete.

Note

When not supported by hardware or architecture, this instruction falls back to a full/sequentially-consistent data memory barrier.

barrier_isync_fence_full()

static ALWAYS_INLINE void barrier_isync_fence_full ( void )

static

#include <zephyr/sys/barrier.h>

Full/sequentially-consistent instruction synchronization barrier.

This routine is used to guarantee that any subsequent instructions are fetched and to ensure any previously executed context-changing operations, such as writes to system control registers, have completed by the time the routine completes. In hardware terms, this might mean that the instruction pipeline is flushed, for example.

Note

When not supported by hardware or architecture, this instruction falls back to a compiler barrier.