fceabb2498
This is a fairly intrusive change, but outside of the moving of opal/event to opal/mca/event, the only changes involved (a) changing all calls to opal_event functions to reflect the new framework instead, and (b) ensuring that all opal_event_t objects are properly constructed since they are now true opal_objects. Note: Shiqing has just returned from vacation and has not yet had a chance to complete the Windows integration. Thus, this commit almost certainly breaks Windows support on the trunk. However, I want this to have a chance to soak for as long as possible before I become less available a week from today (going to be at a class for 5 days, and thus will only be sparingly available) so we can find and fix any problems. Biggest change is moving the libevent code from opal/event to a new opal/mca/event framework. This was done to make it much easier to update libevent in the future. New versions can be inserted as a new component and tested in parallel with the current version until validated, then we can remove the earlier version if we so choose. This is a statically built framework ala installdirs, so only one component will build at a time. There is no selection logic - the sole compiled component simply loads its function pointers into the opal_event struct. I have gone thru the code base and converted all the libevent calls I could find. However, I cannot compile nor test every environment. It is therefore quite likely that errors remain in the system. Please keep an eye open for two things: 1. compile-time errors: these will be obvious as calls to the old functions (e.g., opal_evtimer_new) must be replaced by the new framework APIs (e.g., opal_event.evtimer_new) 2. run-time errors: these will likely show up as segfaults due to missing constructors on opal_event_t objects. It appears that it became a typical practice for people to "init" an opal_event_t by simply using memset to zero it out. This will no longer work - you must either OBJ_NEW or OBJ_CONSTRUCT an opal_event_t. I tried to catch these cases, but may have missed some. Believe me, you'll know when you hit it. There is also the issue of the new libevent "no recursion" behavior. As I described on a recent email, we will have to discuss this and figure out what, if anything, we need to do. This commit was SVN r23925.
187 строки
5.8 KiB
C
187 строки
5.8 KiB
C
/*
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* Copyright (c) 2006-2007 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) 2004-2007 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) 2004-2006 The Regents of the University of California.
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* All rights reserved.
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* Copyright (c) 2010 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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#include "ompi_config.h"
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#include "pml_cm.h"
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#include "opal/mca/event/event.h"
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#include "opal/mca/base/mca_base_param.h"
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#include "ompi/mca/mtl/mtl.h"
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#include "ompi/mca/mtl/base/base.h"
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#include "ompi/mca/pml/base/pml_base_bsend.h"
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#include "pml_cm_sendreq.h"
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#include "pml_cm_recvreq.h"
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#include "pml_cm_component.h"
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static int mca_pml_cm_component_register(void);
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static int mca_pml_cm_component_open(void);
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static int mca_pml_cm_component_close(void);
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static mca_pml_base_module_t* mca_pml_cm_component_init( int* priority,
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bool enable_progress_threads, bool enable_mpi_threads);
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static int mca_pml_cm_component_fini(void);
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mca_pml_base_component_2_0_0_t mca_pml_cm_component = {
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/* First, the mca_base_component_t struct containing meta
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* information about the component itself */
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{
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MCA_PML_BASE_VERSION_2_0_0,
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"cm", /* MCA component name */
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OMPI_MAJOR_VERSION, /* MCA component major version */
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OMPI_MINOR_VERSION, /* MCA component minor version */
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OMPI_RELEASE_VERSION, /* MCA component release version */
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mca_pml_cm_component_open, /* component open */
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mca_pml_cm_component_close, /* component close */
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NULL,
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mca_pml_cm_component_register,
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},
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{
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/* This component is not checkpoint ready */
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MCA_BASE_METADATA_PARAM_NONE
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},
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mca_pml_cm_component_init, /* component init */
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mca_pml_cm_component_fini /* component finalize */
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};
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/* Array of send completion callback - one per send type
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* These are called internally by the library when the send
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* is completed from its perspective.
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*/
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void (*send_completion_callbacks[MCA_PML_BASE_SEND_SIZE])
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(struct mca_mtl_request_t *mtl_request) =
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{ mca_pml_cm_send_request_completion,
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mca_pml_cm_send_request_completion,
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mca_pml_cm_send_request_completion,
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mca_pml_cm_send_request_completion,
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mca_pml_cm_send_request_completion } ;
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static int
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mca_pml_cm_component_register(void)
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{
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mca_base_param_reg_int(&mca_pml_cm_component.pmlm_version,
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"free_list_num",
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"Initial size of request free lists",
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false,
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false,
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4,
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&ompi_pml_cm.free_list_num);
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mca_base_param_reg_int(&mca_pml_cm_component.pmlm_version,
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"free_list_max",
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"Maximum size of request free lists",
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false,
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false,
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-1,
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&ompi_pml_cm.free_list_max);
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mca_base_param_reg_int(&mca_pml_cm_component.pmlm_version,
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"free_list_inc",
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"Number of elements to add when growing request free lists",
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false,
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false,
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64,
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&ompi_pml_cm.free_list_inc);
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mca_base_param_reg_int(&mca_pml_cm_component.pmlm_version,
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"priority",
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"CM PML selection priority",
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false,
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false,
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10,
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&ompi_pml_cm.default_priority);
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return OPAL_SUCCESS;
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}
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static int
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mca_pml_cm_component_open(void)
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{
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int ret;
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ret = ompi_mtl_base_open();
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if (OMPI_SUCCESS == ret) {
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/* If no MTL components initialized CM component can be unloaded */
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if (0 == opal_list_get_size(&ompi_mtl_base_components_opened)) {
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ret = OPAL_ERR_NOT_AVAILABLE;
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}
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}
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return ret;
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}
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static int
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mca_pml_cm_component_close(void)
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{
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return ompi_mtl_base_close();
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}
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static mca_pml_base_module_t*
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mca_pml_cm_component_init(int* priority,
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bool enable_progress_threads,
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bool enable_mpi_threads)
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{
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int ret;
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if((*priority) > ompi_pml_cm.default_priority) {
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*priority = ompi_pml_cm.default_priority;
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return NULL;
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}
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*priority = ompi_pml_cm.default_priority;
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opal_output_verbose( 10, 0,
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"in cm pml priority is %d\n", *priority);
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/* find a useable MTL */
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ret = ompi_mtl_base_select(enable_progress_threads, enable_mpi_threads);
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if (OMPI_SUCCESS != ret) {
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*priority = -1;
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return NULL;
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} else if(strcmp(ompi_mtl_base_selected_component->mtl_version.mca_component_name, "psm") == 0) {
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/*
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* If MTL is PSM then up our priority
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* For every other communication layer having MTLs and BTLs, the user/admin
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* may still select PML/ob1 (BTLs) or PML/cm (MTLs) if preferable for the app/site.
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*/
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*priority = 30;
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}
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/* update our tag / context id max values based on MTL
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information */
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ompi_pml_cm.super.pml_max_contextid = ompi_mtl->mtl_max_contextid;
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ompi_pml_cm.super.pml_max_tag = ompi_mtl->mtl_max_tag;
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return &ompi_pml_cm.super;
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}
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static int
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mca_pml_cm_component_fini(void)
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{
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if (NULL != ompi_mtl && NULL != ompi_mtl->mtl_finalize) {
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return ompi_mtl->mtl_finalize(ompi_mtl);
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}
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return OMPI_SUCCESS;
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}
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