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