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/*
* Copyright (c) 2009 Cisco Systems, Inc. All rights reserved.
* Copyright (c) 2016 Research Organization for Information Science
* and Technology (RIST). All rights reserved.
* $COPYRIGHT$
*
* Additional copyrights may follow
*
* $HEADER$
*/
#ifndef OPAL_MCA_MEMCPY_BASE_MEMORY_BASE_DEFAULT_H
#define OPAL_MCA_MEMCPY_BASE_MEMORY_BASE_DEFAULT_H
#include "opal_config.h"
/**
* Provided for memory components that don't provide an asynchronous
* method for determining if memory mappings have changed. If a
* component only has a synchronous / interactive method of checking,
* then it can override this macro with some logic to do a (hopefully)
* cheap check to see if memory mappings have changed. The intent is
* that if this cheap check returns true, the upper layer will then
* invoke the memoryc_process() function to actually process what
* changed. This function will be invoked by the upper layer with the
* syntax:
*
* if (opal_memory_changed()) { ... }
*
* Hence, if you need any kind of sophisticated logic, you might want
* to put it in an inline function and have the #define call the
* inline function.
*/
#define opal_memory_changed() 0
BEGIN_C_DECLS
/**
* Default (empty) implementation of the memoryc_register function.
*
* See opal/mca/memory/memory.h for a description of the parameters.
*/
OPAL_DECLSPEC int opal_memory_base_component_register_empty(void *start,
size_t len,
uint64_t cookie);
/**
* Default (empty) implementation of the memoryc_deregister function
*
* See opal/mca/memory/memory.h for a description of the parameters.
*/
OPAL_DECLSPEC int opal_memory_base_component_deregister_empty(void *start,
size_t len,
uint64_t cookie);
/**
* Default (empty) implementation of the memoryc_set_alignment function
*
* See opal/mca/memory/memory.h for a description of the parameters.
*/
OPAL_DECLSPEC void opal_memory_base_component_set_alignment_empty(int use_memalign,
size_t memalign_threshold);
END_C_DECLS
#endif
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