0af7ac53f2
* add "register" function to mca_base_component_t
* converted coll:basic and paffinity:linux and paffinity:solaris to
use this function
* we'll convert the rest over time (I'll file a ticket once all
this is committed)
* add 32 bytes of "reserved" space to the end of mca_base_component_t
and mca_base_component_data_2_0_0_t to make future upgrades
[slightly] easier
* new mca_base_component_t size: 196 bytes
* new mca_base_component_data_2_0_0_t size: 36 bytes
* MCA base version bumped to v2.0
* '''We now refuse to load components that are not MCA v2.0.x'''
* all MCA frameworks versions bumped to v2.0
* be a little more explicit about version numbers in the MCA base
* add big comment in mca.h about versioning philosophy
This commit was SVN r19073.
The following Trac tickets were found above:
Ticket 1392 --> https://svn.open-mpi.org/trac/ompi/ticket/1392
95 строки
3.2 KiB
C
95 строки
3.2 KiB
C
/*
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* Copyright (c) 2004-2005 The Trustees of Indiana University and Indiana
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* University Research and Technology
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* Corporation. All rights reserved.
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* Copyright (c) 2004-2005 The University of Tennessee and The University
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* of Tennessee Research Foundation. All rights
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* reserved.
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* Copyright (c) 2004-2005 High Performance Computing Center Stuttgart,
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* University of Stuttgart. All rights reserved.
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* Copyright (c) 2004-2005 The Regents of the University of California.
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* 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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/**
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* @file
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*
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* High resolution timer / cycle counter
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*
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* High resolution timer / cycle counter interface. This interface is
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* intended to hide the system-dependent nature of timers that provide
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* higher resolution and lower calling cost than gettimeofday().
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* Unlike most component interfaces, there should only ever be one
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* component available to be built on a particular platform.
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* Therefore, a number of #defines are available to determine how well
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* the platform supports high resolution timers:
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*
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* <UL>
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* <LI><PRE>OPAL_TIMER_CYCLE_NATIVE</PRE> Whether
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* opal_timer_base_get_cycle() is implemented directly or computed
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* from some other data (such as a high res timer)</LI>
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* <LI><PRE>OPAL_TIMER_CYCLE_SUPPORTED</PRE> Whether
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* opal_timer_base_get_cycle() is supported on the current
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* platform.</LI>
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* <LI><PRE>OPAL_TIMER_USEC_SUPPORTED</PRE> Whether
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* opal_timer_base_get_usec() is supported on the current
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* platform or implemented on top of gettimeofday(), which
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* may be unsuitable for some uses.
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* </UL>
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*
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* The cycle count may not be the cycle count of the CPU itself, if
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* there is another sufficiently close counter with better behavior
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* characteristics (like the Time Base counter on many Power/PowerPC
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* platforms). The function opal_timer_base_get_freq() returns the
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* frequency of the cycle counter in use, *NOT* the frequency of the
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* main CPU.
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*
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* Unless otherwise noted, no attempt is made to cope with the the
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* differences in counters on SMP machines. If your process switches
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* CPUs, your timer results may change.
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*
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* Build time priorities are allocated as follows:
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*
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* - 0 gettimeofday() wrapper
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* - 10 Assembly timers with bad frequency search (Linux)
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* - 20 NIC software stack (QSNet, Myrinet?)
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* - 30 Operating systems with native interfaces
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*/
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#ifndef OPAL_MCA_TIMER_TIMER_H
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#define OPAL_MCA_TIMER_TIMER_H
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#include "opal_config.h"
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#include "opal/mca/mca.h"
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#include "opal/mca/base/base.h"
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/**
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* Structure for timer components.
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*/
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struct opal_timer_base_component_2_0_0_t {
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/** MCA base component */
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mca_base_component_t timerc_version;
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/** MCA base data */
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mca_base_component_data_t timerc_data;
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};
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/**
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* Convenience typedef
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*/
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typedef struct opal_timer_base_component_2_0_0_t opal_timer_base_component_2_0_0_t;
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/*
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* Macro for use in components that are of type timer
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*/
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#define OPAL_TIMER_BASE_VERSION_2_0_0 \
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MCA_BASE_VERSION_2_0_0, \
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"timer", 2, 0, 0
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#endif /* OPAL_MCA_TIMER_TIMER_H */
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