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openmpi/orte/mca/snapc/base/snapc_base_fns.c
Jeff Squyres e7ecd56bd2 This commit represents a bunch of work on a Mercurial side branch. As 
such, the commit message back to the master SVN repository is fairly
long.

= ORTE Job-Level Output Messages =

Add two new interfaces that should be used for all new code throughout
the ORTE and OMPI layers (we already make the search-and-replace on
the existing ORTE / OMPI layers):

 * orte_output(): (and corresponding friends ORTE_OUTPUT,
   orte_output_verbose, etc.)  This function sends the output directly
   to the HNP for processing as part of a job-specific output
   channel.  It supports all the same outputs as opal_output()
   (syslog, file, stdout, stderr), but for stdout/stderr, the output
   is sent to the HNP for processing and output.  More on this below.
 * orte_show_help(): This function is a drop-in-replacement for
   opal_show_help(), with two differences in functionality:
   1. the rendered text help message output is sent to the HNP for
      display (rather than outputting directly into the process' stderr
      stream)
   1. the HNP detects duplicate help messages and does not display them
      (so that you don't see the same error message N times, once from
      each of your N MPI processes); instead, it counts "new" instances
      of the help message and displays a message every ~5 seconds when
      there are new ones ("I got X new copies of the help message...")

opal_show_help and opal_output still exist, but they only output in
the current process.  The intent for the new orte_* functions is that
they can apply job-level intelligence to the output.  As such, we
recommend that all new ORTE and OMPI code use the new orte_*
functions, not thei opal_* functions.

=== New code ===

For ORTE and OMPI programmers, here's what you need to do differently
in new code:

 * Do not include opal/util/show_help.h or opal/util/output.h.
   Instead, include orte/util/output.h (this one header file has
   declarations for both the orte_output() series of functions and
   orte_show_help()).
 * Effectively s/opal_output/orte_output/gi throughout your code.
   Note that orte_output_open() takes a slightly different argument
   list (as a way to pass data to the filtering stream -- see below),
   so you if explicitly call opal_output_open(), you'll need to
   slightly adapt to the new signature of orte_output_open().
 * Literally s/opal_show_help/orte_show_help/.  The function signature
   is identical.

=== Notes ===

 * orte_output'ing to stream 0 will do similar to what
   opal_output'ing did, so leaving a hard-coded "0" as the first
   argument is safe.
 * For systems that do not use ORTE's RML or the HNP, the effect of
   orte_output_* and orte_show_help will be identical to their opal
   counterparts (the additional information passed to
   orte_output_open() will be lost!).  Indeed, the orte_* functions
   simply become trivial wrappers to their opal_* counterparts.  Note
   that we have not tested this; the code is simple but it is quite
   possible that we mucked something up.

= Filter Framework =

Messages sent view the new orte_* functions described above and
messages output via the IOF on the HNP will now optionally be passed
through a new "filter" framework before being output to
stdout/stderr.  The "filter" OPAL MCA framework is intended to allow
preprocessing to messages before they are sent to their final
destinations.  The first component that was written in the filter
framework was to create an XML stream, segregating all the messages
into different XML tags, etc.  This will allow 3rd party tools to read
the stdout/stderr from the HNP and be able to know exactly what each
text message is (e.g., a help message, another OMPI infrastructure
message, stdout from the user process, stderr from the user process,
etc.).

Filtering is not active by default.  Filter components must be
specifically requested, such as:

{{{
$ mpirun --mca filter xml ...
}}}

There can only be one filter component active.

= New MCA Parameters =

The new functionality described above introduces two new MCA
parameters:

 * '''orte_base_help_aggregate''': Defaults to 1 (true), meaning that
   help messages will be aggregated, as described above.  If set to 0,
   all help messages will be displayed, even if they are duplicates
   (i.e., the original behavior).
 * '''orte_base_show_output_recursions''': An MCA parameter to help
   debug one of the known issues, described below.  It is likely that
   this MCA parameter will disappear before v1.3 final.

= Known Issues =

 * The XML filter component is not complete.  The current output from
   this component is preliminary and not real XML.  A bit more work
   needs to be done to configure.m4 search for an appropriate XML
   library/link it in/use it at run time.
 * There are possible recursion loops in the orte_output() and
   orte_show_help() functions -- e.g., if RML send calls orte_output()
   or orte_show_help().  We have some ideas how to fix these, but
   figured that it was ok to commit before feature freeze with known
   issues.  The code currently contains sub-optimal workarounds so
   that this will not be a problem, but it would be good to actually
   solve the problem rather than have hackish workarounds before v1.3 final.

This commit was SVN r18434.
2008-05-13 20:00:55 +00:00

990 строки
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Исходник Ответственный История

/*
* Copyright (c) 2004-2008 The Trustees of Indiana University.
* All rights reserved.
* Copyright (c) 2004-2005 The Trustees of the University of Tennessee.
* All rights reserved.
* Copyright (c) 2004-2005 High Performance Computing Center Stuttgart,
* University of Stuttgart. All rights reserved.
* Copyright (c) 2004-2005 The Regents of the University of California.
* All rights reserved.
* Copyright (c) 2007 Evergrid, Inc. All rights reserved.
*
* $COPYRIGHT$
*
* Additional copyrights may follow
*
* $HEADER$
*/
#include "orte_config.h"
#if HAVE_SYS_TYPES_H
#include <sys/types.h>
#endif /* HAVE_SYS_TYPES_H */
#ifdef HAVE_UNISTD_H
#include <unistd.h>
#endif /* HAVE_UNISTD_H */
#include <time.h>
#include "opal/mca/mca.h"
#include "opal/mca/base/base.h"
#include "orte/util/output.h"
#include "opal/mca/base/mca_base_param.h"
#include "opal/util/os_dirpath.h"
#include "opal/util/basename.h"
#include "opal/mca/crs/crs.h"
#include "opal/mca/crs/base/base.h"
#include "orte/mca/rml/rml.h"
#include "orte/runtime/orte_globals.h"
#include "orte/util/name_fns.h"
#include "orte/mca/snapc/snapc.h"
#include "orte/mca/snapc/base/base.h"
/******************
* Local Functions
******************/
/* Some local strings to use genericly with the global metadata file */
#define SNAPC_METADATA_SEQ ("# Seq: ")
#define SNAPC_METADATA_DONE_SEQ ("# Finished Seq: ")
#define SNAPC_METADATA_TIME ("# Timestamp: ")
#define SNAPC_METADATA_PROCESS ("# Process: ")
#define SNAPC_METADATA_CRS_COMP ("# OPAL CRS Component: ")
#define SNAPC_METADATA_SNAP_REF ("# Snapshot Reference: ")
#define SNAPC_METADATA_SNAP_LOC ("# Snapshot Location: ")
static int get_next_seq_number(FILE *file);
static int get_next_valid_seq_number(FILE *file);
static int metadata_extract_next_token(FILE *file, char **token, char **value);
size_t orte_snapc_base_snapshot_seq_number = 0;
/******************
* Object stuff
******************/
OBJ_CLASS_INSTANCE(orte_snapc_base_snapshot_t,
opal_crs_base_snapshot_t,
orte_snapc_base_snapshot_construct,
orte_snapc_base_snapshot_destruct);
void orte_snapc_base_snapshot_construct(orte_snapc_base_snapshot_t *snapshot)
{
snapshot->process_name.jobid = 0;
snapshot->process_name.vpid = 0;
snapshot->process_pid = 0;
snapshot->state = ORTE_SNAPC_CKPT_STATE_NONE;
snapshot->term = false;
}
void orte_snapc_base_snapshot_destruct( orte_snapc_base_snapshot_t *snapshot)
{
snapshot->process_name.jobid = 0;
snapshot->process_name.vpid = 0;
snapshot->process_pid = 0;
snapshot->state = ORTE_SNAPC_CKPT_STATE_NONE;
snapshot->term = false;
}
/****/
OBJ_CLASS_INSTANCE(orte_snapc_base_global_snapshot_t,
opal_list_item_t,
orte_snapc_base_global_snapshot_construct,
orte_snapc_base_global_snapshot_destruct);
void orte_snapc_base_global_snapshot_construct(orte_snapc_base_global_snapshot_t *snapshot)
{
OBJ_CONSTRUCT(&(snapshot->snapshots), opal_list_t);
snapshot->component_name = NULL;
snapshot->reference_name = orte_snapc_base_unique_global_snapshot_name(getpid());
snapshot->local_location = opal_dirname(orte_snapc_base_get_global_snapshot_directory(snapshot->reference_name));
snapshot->seq_num = 0;
snapshot->start_time = NULL;
snapshot->end_time = NULL;
}
void orte_snapc_base_global_snapshot_destruct( orte_snapc_base_global_snapshot_t *snapshot)
{
opal_list_item_t* item = NULL;
while (NULL != (item = opal_list_remove_first(&snapshot->snapshots))) {
OBJ_RELEASE(item);
}
OBJ_DESTRUCT(&(snapshot->snapshots));
if(NULL != snapshot->reference_name) {
free(snapshot->reference_name);
snapshot->reference_name = NULL;
}
if(NULL != snapshot->component_name) {
free(snapshot->component_name);
snapshot->component_name = NULL;
}
if(NULL != snapshot->local_location) {
free(snapshot->local_location);
snapshot->local_location = NULL;
}
if(NULL != snapshot->start_time) {
free(snapshot->start_time);
snapshot->start_time = NULL;
}
if(NULL != snapshot->end_time) {
free(snapshot->end_time);
snapshot->end_time = NULL;
}
snapshot->seq_num = 0;
}
/***********************
* None component stuff
************************/
int orte_snapc_base_none_open(void)
{
return ORTE_SUCCESS;
}
int orte_snapc_base_none_close(void)
{
return ORTE_SUCCESS;
}
int orte_snapc_base_none_query(mca_base_module_t **module, int *priority)
{
*module = NULL;
*priority = 0;
return OPAL_SUCCESS;
}
int orte_snapc_base_module_init(bool seed, bool app)
{
return ORTE_SUCCESS;
}
int orte_snapc_base_module_finalize(void)
{
return ORTE_SUCCESS;
}
/* None RML command line response callback */
static void snapc_none_global_cmdline_request(int status,
orte_process_name_t* sender,
opal_buffer_t *buffer,
orte_rml_tag_t tag,
void* cbdata);
int orte_snapc_base_none_setup_job(orte_jobid_t jobid)
{
int exit_status = ORTE_SUCCESS;
int rc;
/*
* Coordinator command listener
*/
orte_snapc_base_snapshot_seq_number = -1;
if (ORTE_SUCCESS != (rc = orte_rml.recv_buffer_nb(ORTE_NAME_WILDCARD,
ORTE_RML_TAG_CKPT,
ORTE_RML_PERSISTENT,
snapc_none_global_cmdline_request,
NULL))) {
exit_status = rc;
goto cleanup;
}
cleanup:
return exit_status;
}
int orte_snapc_base_none_release_job(orte_jobid_t jobid)
{
/*
* Remove the checkpoint request callback
*/
return ORTE_SUCCESS;
}
int orte_snapc_base_none_ft_event(int state)
{
return ORTE_SUCCESS;
}
/********************
* Local Functions
********************/
/* None RML response callback */
static void snapc_none_global_cmdline_request(int status,
orte_process_name_t* sender,
opal_buffer_t *buffer,
orte_rml_tag_t tag,
void* cbdata)
{
int ret, exit_status = ORTE_SUCCESS;
orte_snapc_cmd_flag_t command;
orte_std_cntr_t n = 1;
bool term = false;
orte_jobid_t jobid;
n = 1;
if (ORTE_SUCCESS != (ret = opal_dss.unpack(buffer, &command, &n, ORTE_SNAPC_CMD))) {
exit_status = ret;
goto cleanup;
}
/*
* orte_checkpoint has requested that a checkpoint be taken
* Respond that a checkpoint cannot be taken at this time
*/
if (ORTE_SNAPC_GLOBAL_INIT_CMD == command) {
/*
* Do the basic handshake with the orte_checkpoint command
*/
if( ORTE_SUCCESS != (ret = orte_snapc_base_global_coord_ckpt_init_cmd(sender, buffer, &term, &jobid)) ) {
exit_status = ret;
goto cleanup;
}
/*
* Respond with an invalid response
*/
if( ORTE_SUCCESS != (ret = orte_snapc_base_global_coord_ckpt_update_cmd(sender, NULL, -1, ORTE_SNAPC_CKPT_STATE_NO_CKPT)) ) {
exit_status = ret;
goto cleanup;
}
}
/*
* Unknown command
*/
else {
goto cleanup;
}
cleanup:
return;
}
/********************
* Utility functions
********************/
int orte_snapc_base_global_coord_ckpt_init_cmd(orte_process_name_t* peer,
opal_buffer_t* buffer,
bool *term,
orte_jobid_t *jobid)
{
int ret, exit_status = ORTE_SUCCESS;
orte_std_cntr_t count = 1;
/*
* Do not send to self, as that is silly.
*/
if (peer->jobid == ORTE_PROC_MY_HNP->jobid &&
peer->vpid == ORTE_PROC_MY_HNP->vpid ) {
ORTE_OUTPUT_VERBOSE((10, orte_snapc_base_output,
"%s) base:ckpt_init_cmd: Error: Do not send to self!\n",
ORTE_SNAPC_COORD_NAME_PRINT(orte_snapc_coord_type)));
return ORTE_SUCCESS;
}
ORTE_OUTPUT_VERBOSE((10, orte_snapc_base_output,
"%s) base:ckpt_init_cmd: Receiving commands\n",
ORTE_SNAPC_COORD_NAME_PRINT(orte_snapc_coord_type)));
/********************
* Receive command line checkpoint request:
* - Command (already received)
* - term flag
* - jobid
********************/
count = 1;
if ( ORTE_SUCCESS != (ret = opal_dss.unpack(buffer, term, &count, OPAL_BOOL)) ) {
orte_output(orte_snapc_base_output,
"%s) base:ckpt_init_cmd: Error: DSS Unpack (term) Failure (ret = %d) (LINE = %d)\n",
ORTE_SNAPC_COORD_NAME_PRINT(orte_snapc_coord_type),
ret, __LINE__);
exit_status = ret;
goto cleanup;
}
count = 1;
if ( ORTE_SUCCESS != (ret = opal_dss.unpack(buffer, jobid, &count, ORTE_JOBID)) ) {
orte_output(orte_snapc_base_output,
"%s) base:ckpt_init_cmd: Error: DSS Unpack (jobid) Failure (ret = %d) (LINE = %d)\n",
ORTE_SNAPC_COORD_NAME_PRINT(orte_snapc_coord_type),
ret, __LINE__);
exit_status = ret;
goto cleanup;
}
ORTE_OUTPUT_VERBOSE((10, orte_snapc_base_output,
"%s) base:ckpt_init_cmd: Received [%d, %s]\n",
ORTE_SNAPC_COORD_NAME_PRINT(orte_snapc_coord_type),
(int)*term,
ORTE_JOBID_PRINT(*jobid)));
cleanup:
return exit_status;
}
int orte_snapc_base_global_coord_ckpt_update_cmd(orte_process_name_t* peer,
char *global_snapshot_handle,
int seq_num,
int ckpt_status)
{
int ret, exit_status = ORTE_SUCCESS;
opal_buffer_t *loc_buffer = NULL;
orte_snapc_cmd_flag_t command = ORTE_SNAPC_GLOBAL_UPDATE_CMD;
/*
* Do not send to self, as that is silly.
*/
if (peer->jobid == ORTE_PROC_MY_HNP->jobid &&
peer->vpid == ORTE_PROC_MY_HNP->vpid ) {
ORTE_OUTPUT_VERBOSE((10, orte_snapc_base_output,
"%s) base:ckpt_update_cmd: Error: Do not send to self!\n",
ORTE_SNAPC_COORD_NAME_PRINT(orte_snapc_coord_type)));
return ORTE_SUCCESS;
}
ORTE_OUTPUT_VERBOSE((10, orte_snapc_base_output,
"%s) base:ckpt_update_cmd: Sending update command <%s> <seq %d> <status %d>\n",
ORTE_SNAPC_COORD_NAME_PRINT(orte_snapc_coord_type),
global_snapshot_handle, seq_num, ckpt_status));
/********************
* Send over the status of the checkpoint
* - ckpt_state
* - global snapshot handle (upon finish only)
* - sequence number (upon finish only)
********************/
if (NULL == (loc_buffer = OBJ_NEW(opal_buffer_t))) {
exit_status = ORTE_ERROR;
goto cleanup;
}
if (ORTE_SUCCESS != (ret = opal_dss.pack(loc_buffer, &command, 1, ORTE_SNAPC_CMD)) ) {
exit_status = ret;
goto cleanup;
}
if (ORTE_SUCCESS != (ret = opal_dss.pack(loc_buffer, &ckpt_status, 1, OPAL_INT))) {
orte_output(orte_snapc_base_output,
"%s) base:ckpt_update_cmd: Error: DSS Pack (ckpt_status) Failure (ret = %d) (LINE = %d)\n",
ORTE_SNAPC_COORD_NAME_PRINT(orte_snapc_coord_type),
ret, __LINE__);
exit_status = ret;
goto cleanup;
}
if( ORTE_SNAPC_CKPT_STATE_FINISHED == ckpt_status ||
ORTE_SNAPC_CKPT_STATE_ERROR == ckpt_status ) {
if (ORTE_SUCCESS != (ret = opal_dss.pack(loc_buffer, &global_snapshot_handle, 1, OPAL_STRING))) {
orte_output(orte_snapc_base_output,
"%s) base:ckpt_update_cmd: Error: DSS Pack (snapshot handle) Failure (ret = %d) (LINE = %d)\n",
ORTE_SNAPC_COORD_NAME_PRINT(orte_snapc_coord_type),
ret, __LINE__);
exit_status = ret;
goto cleanup;
}
if (ORTE_SUCCESS != (ret = opal_dss.pack(loc_buffer, &seq_num, 1, OPAL_INT))) {
orte_output(orte_snapc_base_output,
"%s) base:ckpt_update_cmd: Error: DSS Pack (seq number) Failure (ret = %d) (LINE = %d)\n",
ORTE_SNAPC_COORD_NAME_PRINT(orte_snapc_coord_type),
ret, __LINE__);
exit_status = ret;
goto cleanup;
}
}
if (0 > (ret = orte_rml.send_buffer(peer, loc_buffer, ORTE_RML_TAG_CKPT, 0))) {
orte_output(orte_snapc_base_output,
"%s) base:ckpt_update_cmd: Error: Send (ckpt_status) Failure (ret = %d) (LINE = %d)\n",
ORTE_SNAPC_COORD_NAME_PRINT(orte_snapc_coord_type),
ret, __LINE__);
exit_status = ret;
goto cleanup;
}
cleanup:
if(NULL != loc_buffer) {
OBJ_RELEASE(loc_buffer);
loc_buffer = NULL;
}
return exit_status;
}
/****************************
* Command line tool request functions
****************************/
/* JJH TODO - Move the command line functions here ? */
/*****************************
* Snapshot metadata functions
*****************************/
char * orte_snapc_base_unique_global_snapshot_name(pid_t pid)
{
char * uniq_name;
if( NULL == orte_snapc_base_global_snapshot_ref ) {
asprintf(&uniq_name, "ompi_global_snapshot_%d.ckpt", pid);
}
else {
uniq_name = strdup(orte_snapc_base_global_snapshot_ref);
}
return uniq_name;
}
char * orte_snapc_base_get_global_snapshot_metadata_file(char *uniq_snapshot_name)
{
char * path = NULL;
asprintf(&path, "%s/%s/%s",
orte_snapc_base_global_snapshot_dir,
uniq_snapshot_name,
orte_snapc_base_metadata_filename);
return path;
}
char * orte_snapc_base_get_global_snapshot_directory(char *uniq_snapshot_name)
{
char * dir_name = NULL;
asprintf(&dir_name, "%s/%s/%d",
orte_snapc_base_global_snapshot_dir,
uniq_snapshot_name,
(int)orte_snapc_base_snapshot_seq_number);
return dir_name;
}
int orte_snapc_base_init_global_snapshot_directory(char *uniq_global_snapshot_name, bool empty_metadata)
{
char * dir_name = NULL, *meta_data_fname = NULL;
mode_t my_mode = S_IRWXU;
int ret;
int exit_status = ORTE_SUCCESS;
FILE * meta_data = NULL;
/*
* Make the snapshot directory from the uniq_global_snapshot_name
*/
dir_name = orte_snapc_base_get_global_snapshot_directory(uniq_global_snapshot_name);
if(OPAL_SUCCESS != (ret = opal_os_dirpath_create(dir_name, my_mode)) ) {
exit_status = ret;
goto cleanup;
}
/*
* Initialize the metadata file at the top of that directory.
*/
meta_data_fname = orte_snapc_base_get_global_snapshot_metadata_file(uniq_global_snapshot_name);
if (NULL == (meta_data = fopen(meta_data_fname, "a")) ) {
orte_output(orte_snapc_base_output,
"%s) base:init_global_snapshot_directory: Error: Unable to open the file (%s)\n",
ORTE_SNAPC_COORD_NAME_PRINT(orte_snapc_coord_type),
meta_data_fname);
exit_status = ORTE_ERROR;
goto cleanup;
}
/*
* Put in the checkpoint sequence number
*/
if( empty_metadata ) {
fprintf(meta_data, "#\n");
}
else {
/*
* Put in the checkpoint sequence number
*/
fprintf(meta_data, "#\n%s%d\n", SNAPC_METADATA_SEQ, (int)orte_snapc_base_snapshot_seq_number);
fclose(meta_data);
meta_data = NULL;
/* Add timestamp */
orte_snapc_base_add_timestamp(uniq_global_snapshot_name);
}
cleanup:
if(NULL != meta_data)
fclose(meta_data);
if(NULL != dir_name)
free(dir_name);
if(NULL != meta_data_fname)
free(meta_data_fname);
return OPAL_SUCCESS;
}
/*
* Metadata file handling functions
* File is of the form:
*
* #
* # Checkpoint Sequence #
* # Begin Timestamp
* # Process ID
* # OPAL CRS
* opal_restart ----mca crs_base_snapshot_dir SNAPSHOT_LOC SNAPSHOT_REF
* ...
* # End Timestamp
*
* E.g.,
#
# Seq: 0
# Timestamp: Mon Jun 5 18:32:08 2006
# Process: 0.1.0
# OPAL CRS Component: blcr
opal_restart --mca crs_base_snapshot_dir /tmp/ompi_global_snapshot_32535.ckpt/0 opal_snapshot_0.ckpt
# Process: 0.1.1
# OPAL CRS Component: blcr
opal_restart --mca crs_base_snapshot_dir /tmp/ompi_global_snapshot_32535.ckpt/0 opal_snapshot_1.ckpt
# Timestamp: Mon Jun 5 18:32:10 2006
#
# Seq: 1
# Timestamp: Mon Jun 5 18:32:12 2006
# Process: 0.1.0
# OPAL CRS Component: blcr
opal_restart --mca crs_base_snapshot_dir /tmp/ompi_global_snapshot_32535.ckpt/1 opal_snapshot_0.ckpt
# Process: 0.1.1
# OPAL CRS Component: blcr
opal_restart --mca crs_base_snapshot_dir /tmp/ompi_global_snapshot_32535.ckpt/1 opal_snapshot_1.ckpt
# Timestamp: Mon Jun 5 18:32:13 2006
*
*/
int orte_snapc_base_add_timestamp(char * global_snapshot_ref)
{
int exit_status = ORTE_SUCCESS;
FILE * meta_data = NULL;
char * meta_data_fname = NULL;
time_t timestamp;
meta_data_fname = orte_snapc_base_get_global_snapshot_metadata_file(global_snapshot_ref);
if (NULL == (meta_data = fopen(meta_data_fname, "a")) ) {
orte_output(orte_snapc_base_output,
"%s) base:add_timestamp: Error: Unable to open the file (%s)\n",
ORTE_SNAPC_COORD_NAME_PRINT(orte_snapc_coord_type),
meta_data_fname);
exit_status = ORTE_ERROR;
goto cleanup;
}
timestamp = time(NULL);
fprintf(meta_data, "%s%s", SNAPC_METADATA_TIME, ctime(&timestamp));
cleanup:
if( NULL != meta_data )
fclose(meta_data);
if( NULL != meta_data_fname)
free(meta_data_fname);
return exit_status;
}
int orte_snapc_base_finalize_metadata(char * global_snapshot_ref)
{
int exit_status = ORTE_SUCCESS;
FILE * meta_data = NULL;
char * meta_data_fname = NULL;
/* Add the final timestamp */
orte_snapc_base_add_timestamp(global_snapshot_ref);
meta_data_fname = orte_snapc_base_get_global_snapshot_metadata_file(global_snapshot_ref);
if (NULL == (meta_data = fopen(meta_data_fname, "a")) ) {
orte_output(orte_snapc_base_output,
"%s) base:add_timestamp: Error: Unable to open the file (%s)\n",
ORTE_SNAPC_COORD_NAME_PRINT(orte_snapc_coord_type),
meta_data_fname);
exit_status = ORTE_ERROR;
goto cleanup;
}
fprintf(meta_data, "%s%d\n", SNAPC_METADATA_DONE_SEQ, (int)orte_snapc_base_snapshot_seq_number);
cleanup:
if( NULL != meta_data )
fclose(meta_data);
if( NULL != meta_data_fname)
free(meta_data_fname);
return exit_status;
}
int orte_snapc_base_add_vpid_metadata( orte_process_name_t *proc,
char * global_snapshot_ref,
char *snapshot_ref,
char *snapshot_location)
{
int ret, exit_status = ORTE_SUCCESS;
FILE * meta_data = NULL;
char * meta_data_fname = NULL;
char * crs_comp = NULL;
char * local_dir = NULL;
char * proc_name = NULL;
int prev_pid = 0;
meta_data_fname = orte_snapc_base_get_global_snapshot_metadata_file(global_snapshot_ref);
if (NULL == (meta_data = fopen(meta_data_fname, "a")) ) {
orte_output(orte_snapc_base_output,
"%s) base:add_metadata: Error: Unable to open the file (%s)\n",
ORTE_SNAPC_COORD_NAME_PRINT(orte_snapc_coord_type),
meta_data_fname);
exit_status = ORTE_ERROR;
goto cleanup;
}
/*
* Something of the form:
* 0.1.0 opal_snapshot_0.ckpt /tmp/ompi_global_snapshot_8827.ckpt/1/opal_snapshot_0.ckpt BLCR
* or better yet start to create the proper app schema:
* orte_restart --mca crs_base_snapshot_dir /tmp/ompi_global_snapshot_8827.ckpt/1 opal_snapshot_0.ckpt
*/
orte_util_convert_process_name_to_string(&proc_name, proc);
/* Extract the checkpointer */
if( OPAL_SUCCESS != (ret = opal_crs_base_extract_expected_component(snapshot_location, &crs_comp, &prev_pid)) ) {
exit_status = ORTE_ERROR;
goto cleanup;
}
/* get the base of the location */
local_dir = strdup(snapshot_location);
local_dir = opal_dirname(local_dir);
/* Write the string */
fprintf(meta_data, "%s%s\n", SNAPC_METADATA_PROCESS, proc_name);
fprintf(meta_data, "%s%s\n", SNAPC_METADATA_CRS_COMP, crs_comp);
fprintf(meta_data, "%s%s\n", SNAPC_METADATA_SNAP_REF, snapshot_ref);
fprintf(meta_data, "%s%s\n", SNAPC_METADATA_SNAP_LOC, local_dir);
cleanup:
if( NULL != meta_data )
fclose(meta_data);
if( NULL != meta_data_fname)
free(meta_data_fname);
if( NULL != local_dir)
free(local_dir);
return exit_status;
}
int orte_snapc_base_extract_metadata(orte_snapc_base_global_snapshot_t *global_snapshot)
{
int exit_status = ORTE_SUCCESS;
FILE * meta_data = NULL;
char * meta_data_fname = NULL;
int next_seq_int;
char * token = NULL;
char * value = NULL;
orte_snapc_base_snapshot_t *vpid_snapshot = NULL;
/*
* Open the metadata file
*/
meta_data_fname = orte_snapc_base_get_global_snapshot_metadata_file(global_snapshot->reference_name);
if (NULL == (meta_data = fopen(meta_data_fname, "r")) ) {
exit_status = ORTE_ERROR;
goto cleanup;
}
/*
* If we were not given a sequence number, first find the largest valid seq number
*/
if(0 > global_snapshot->seq_num ) {
while(0 <= (next_seq_int = get_next_valid_seq_number(meta_data)) ){
global_snapshot->seq_num = next_seq_int;
}
rewind(meta_data);
}
/*
* Find the requested sequence number,
*/
while( global_snapshot->seq_num != (next_seq_int = get_next_seq_number(meta_data)) ) {
/* We didn't find the requested seq */
if(0 > next_seq_int) {
exit_status = ORTE_ERROR;
goto cleanup;
}
}
/*
* Extract each token and make the records
*/
do {
if( ORTE_SUCCESS != metadata_extract_next_token(meta_data, &token, &value) ) {
break;
}
if(0 == strncmp(SNAPC_METADATA_SEQ, token, strlen(SNAPC_METADATA_SEQ)) ) {
break;
}
else if(0 == strncmp(SNAPC_METADATA_TIME, token, strlen(SNAPC_METADATA_TIME)) ) {
if( NULL == global_snapshot->start_time) {
global_snapshot->start_time = strdup(value);
}
else {
global_snapshot->end_time = strdup(value);
}
}
else if(0 == strncmp(SNAPC_METADATA_PROCESS, token, strlen(SNAPC_METADATA_PROCESS)) ) {
orte_process_name_t proc;
orte_util_convert_string_to_process_name(&proc, value);
/* Not the first process, so append it to the list */
if( NULL != vpid_snapshot) {
opal_list_append(&global_snapshot->snapshots, &(vpid_snapshot->crs_snapshot_super.super));
}
vpid_snapshot = OBJ_NEW(orte_snapc_base_snapshot_t);
vpid_snapshot->process_name.jobid = proc.jobid;
vpid_snapshot->process_name.vpid = proc.vpid;
}
else if(0 == strncmp(SNAPC_METADATA_CRS_COMP, token, strlen(SNAPC_METADATA_CRS_COMP)) ) {
vpid_snapshot->crs_snapshot_super.component_name = strdup(value);
}
else if(0 == strncmp(SNAPC_METADATA_SNAP_REF, token, strlen(SNAPC_METADATA_SNAP_REF)) ) {
vpid_snapshot->crs_snapshot_super.reference_name = strdup(value);
}
else if(0 == strncmp(SNAPC_METADATA_SNAP_LOC, token, strlen(SNAPC_METADATA_SNAP_LOC)) ) {
vpid_snapshot->crs_snapshot_super.local_location = strdup(value);
vpid_snapshot->crs_snapshot_super.remote_location = strdup(value);
}
} while(0 == feof(meta_data) );
/* Append the last item */
if( NULL != vpid_snapshot) {
opal_list_append(&global_snapshot->snapshots, &(vpid_snapshot->crs_snapshot_super.super));
}
cleanup:
if(NULL != meta_data)
fclose(meta_data);
if(NULL != meta_data_fname)
free(meta_data_fname);
return exit_status;
}
/*
* Extract the next sequence number from the file
*/
static int get_next_seq_number(FILE *file)
{
char *token = NULL;
char *value = NULL;
int seq_int = -1;
do {
if( ORTE_SUCCESS != metadata_extract_next_token(file, &token, &value) ) {
seq_int = -1;
goto cleanup;
}
} while(0 != strncmp(token, SNAPC_METADATA_SEQ, strlen(SNAPC_METADATA_SEQ)) );
seq_int = atoi(value);
cleanup:
if( NULL != token)
free(token);
if( NULL != value)
free(value);
return seq_int;
}
/*
* Extract the next Valid sequence number from the file
*/
static int get_next_valid_seq_number(FILE *file)
{
char *token = NULL;
char *value = NULL;
int seq_int = -1;
do {
if( ORTE_SUCCESS != metadata_extract_next_token(file, &token, &value) ) {
seq_int = -1;
goto cleanup;
}
} while(0 != strncmp(token, SNAPC_METADATA_DONE_SEQ, strlen(SNAPC_METADATA_DONE_SEQ)) );
seq_int = atoi(value);
cleanup:
if( NULL != token)
free(token);
if( NULL != value)
free(value);
return seq_int;
}
static int metadata_extract_next_token(FILE *file, char **token, char **value)
{
int exit_status = ORTE_SUCCESS;
int max_len = 256;
char * line = NULL;
int line_len = 0;
int c = 0, s = 0, v = 0;
char *local_token = NULL;
char *local_value = NULL;
bool end_of_line = false;
line = (char *) malloc(sizeof(char) * max_len);
try_again:
/*
* If we are at the end of the file, then just return
*/
if(0 != feof(file) ) {
exit_status = ORTE_ERROR;
goto cleanup;
}
/*
* Other wise grab the next token/value pair
*/
if (NULL == fgets(line, max_len, file) ) {
exit_status = ORTE_ERROR;
goto cleanup;
}
line_len = strlen(line);
/* Strip off the new line if it it there */
if('\n' == line[line_len-1]) {
line[line_len-1] = '\0';
line_len--;
end_of_line = true;
}
else {
end_of_line = false;
}
/* Ignore lines with just '#' too */
if(2 >= line_len)
goto try_again;
/*
* Extract the token from the set
*/
for(c = 0;
line[c] != ':' &&
c < line_len;
++c) {
;
}
c += 2; /* For the ' ' and the '\0' */
local_token = (char *)malloc(sizeof(char) * (c + 1));
for(s = 0; s < c; ++s) {
local_token[s] = line[s];
}
local_token[s] = '\0';
*token = strdup(local_token);
if( NULL != local_token) {
free(local_token);
local_token = NULL;
}
/*
* Extract the value from the set
*/
local_value = (char *)malloc(sizeof(char) * (line_len - c + 1));
for(v = 0, s = c;
s < line_len;
++s, ++v) {
local_value[v] = line[s];
}
while(!end_of_line) {
if (NULL == fgets(line, max_len, file) ) {
exit_status = ORTE_ERROR;
goto cleanup;
}
line_len = strlen(line);
/* Strip off the new line if it it there */
if('\n' == line[line_len-1]) {
line[line_len-1] = '\0';
line_len--;
end_of_line = true;
}
else {
end_of_line = false;
}
local_value = (char *)realloc(local_value, sizeof(char) * line_len);
for(s = 0;
s < line_len;
++s, ++v) {
local_value[v] = line[s];
}
}
local_value[v] = '\0';
*value = strdup(local_value);
cleanup:
if( NULL != local_token)
free(local_token);
if( NULL != local_value)
free(local_value);
if( NULL != line)
free(line);
return exit_status;
}
char * orte_snapc_ckpt_state_str(size_t state)
{
switch(state) {
case ORTE_SNAPC_CKPT_STATE_NONE:
return strdup(" -- ");
break;
case ORTE_SNAPC_CKPT_STATE_REQUEST:
return strdup("Requested");
break;
case ORTE_SNAPC_CKPT_STATE_PENDING_TERM:
return strdup("Pending (Termination)");
break;
case ORTE_SNAPC_CKPT_STATE_PENDING:
return strdup("Pending");
break;
case ORTE_SNAPC_CKPT_STATE_RUNNING:
return strdup("Running");
break;
case ORTE_SNAPC_CKPT_STATE_FILE_XFER:
return strdup("File Transfer");
break;
case ORTE_SNAPC_CKPT_STATE_FINISHED:
return strdup("Finished");
break;
case ORTE_SNAPC_CKPT_STATE_ERROR:
return strdup("Error");
break;
default:
return strdup("Unknown");
}
}
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