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7fed79434e
openmpi/orte/mca/odls/process/odls_process_module.c
George Bosilca 7fed79434e Windows is now able to create local processes. 
This commit was SVN r12039.
2006-10-06 07:04:43 +00:00

887 строки
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/*
* Copyright (c) 2004-2005 The University of Tennessee and The University
* of Tennessee Research Foundation. All rights
* reserved.
* $COPYRIGHT$
*
* Additional copyrights may follow
*
* $HEADER$
*
*/
#include "orte_config.h"
#include <stdlib.h>
#ifdef HAVE_UNISTD_H
#include <unistd.h>
#endif
#include <errno.h>
#include <sys/types.h>
#include <sys/stat.h>
#ifdef HAVE_SYS_WAIT_H
#include <sys/wait.h>
#endif
#include <signal.h>
#ifdef HAVE_FCNTL_H
#include <fcntl.h>
#endif
#include <time.h>
#include "opal/event/event.h"
#include "opal/util/argv.h"
#include "opal/util/output.h"
#include "opal/util/os_path.h"
#include "opal/util/show_help.h"
#include "opal/util/path.h"
#include "opal/util/basename.h"
#include "opal/util/opal_environ.h"
#include "opal/mca/base/mca_base_param.h"
#include "opal/mca/paffinity/base/base.h"
#include "orte/dss/dss.h"
#include "orte/util/sys_info.h"
#include "orte/util/univ_info.h"
#include "orte/util/session_dir.h"
#include "orte/runtime/orte_wait.h"
#include "orte/mca/errmgr/errmgr.h"
#include "orte/mca/errmgr/base/base.h"
#include "orte/mca/iof/iof.h"
#include "orte/mca/iof/base/iof_base_setup.h"
#include "orte/mca/ns/ns.h"
#include "orte/mca/sds/base/base.h"
#include "orte/mca/rmgr/rmgr.h"
#include "orte/mca/rml/rml.h"
#include "orte/mca/gpr/gpr.h"
#include "orte/mca/rmaps/base/base.h"
#include "orte/mca/smr/smr.h"
#include "orte/mca/odls/base/odls_private.h"
#include "orte/mca/odls/process/odls_process.h"
static void set_handler_default(int sig);
/* this entire function gets called within a GPR compound command,
* so the subscription actually doesn't get done until the orted
* executes the compound command
*/
static int orte_odls_process_subscribe_launch_data( orte_jobid_t job,
orte_gpr_notify_cb_fn_t cbfunc )
{
char *segment;
orte_gpr_value_t *values[2];
orte_gpr_subscription_t *subs, sub=ORTE_GPR_SUBSCRIPTION_EMPTY;
orte_gpr_trigger_t *trigs, trig=ORTE_GPR_TRIGGER_EMPTY;
char *glob_keys[] = {
ORTE_JOB_APP_CONTEXT_KEY,
ORTE_JOB_VPID_START_KEY,
ORTE_JOB_VPID_RANGE_KEY
};
int num_glob_keys = 3;
char* keys[] = {
ORTE_PROC_NAME_KEY,
ORTE_PROC_APP_CONTEXT_KEY,
ORTE_NODE_NAME_KEY,
};
int num_keys = 3;
int i, rc;
/* get the job segment name */
if (ORTE_SUCCESS != (rc = orte_schema.get_job_segment_name(&segment, job))) {
ORTE_ERROR_LOG(rc);
return rc;
}
/* attach ourselves to the "standard" orted trigger */
if (ORTE_SUCCESS !=
(rc = orte_schema.get_std_trigger_name(&(trig.name),
ORTED_LAUNCH_STAGE_GATE_TRIGGER, job))) {
ORTE_ERROR_LOG(rc);
free(segment);
return rc;
}
/* ask for return of all data required for launching local processes */
subs = &sub;
sub.action = ORTE_GPR_NOTIFY_DELETE_AFTER_TRIG;
if (ORTE_SUCCESS != (rc = orte_schema.get_std_subscription_name(&(sub.name),
ORTED_LAUNCH_STG_SUB,
job))) {
ORTE_ERROR_LOG(rc);
free(segment);
free(trig.name);
return rc;
}
sub.cnt = 2;
sub.values = values;
if (ORTE_SUCCESS != (rc = orte_gpr.create_value(&(values[0]), ORTE_GPR_TOKENS_OR, segment,
num_glob_keys, 1))) {
ORTE_ERROR_LOG(rc);
free(segment);
free(sub.name);
free(trig.name);
return rc;
}
values[0]->tokens[0] = strdup(ORTE_JOB_GLOBALS);
for (i=0; i < num_glob_keys; i++) {
if (ORTE_SUCCESS != (rc = orte_gpr.create_keyval(&(values[0]->keyvals[i]),
glob_keys[i], ORTE_UNDEF, NULL))) {
ORTE_ERROR_LOG(rc);
free(segment);
free(sub.name);
free(trig.name);
OBJ_RELEASE(values[0]);
return rc;
}
}
if (ORTE_SUCCESS != (rc = orte_gpr.create_value(&(values[1]), ORTE_GPR_KEYS_OR | ORTE_GPR_TOKENS_OR,
segment, num_keys, 0))) {
ORTE_ERROR_LOG(rc);
free(segment);
free(sub.name);
free(trig.name);
OBJ_RELEASE(values[0]);
return rc;
}
for (i=0; i < num_keys; i++) {
if (ORTE_SUCCESS != (rc = orte_gpr.create_keyval(&(values[1]->keyvals[i]),
keys[i], ORTE_UNDEF, NULL))) {
ORTE_ERROR_LOG(rc);
free(segment);
free(sub.name);
free(trig.name);
OBJ_RELEASE(values[0]);
OBJ_RELEASE(values[1]);
return rc;
}
}
sub.cbfunc = cbfunc;
trigs = &trig;
/* do the subscription */
if (ORTE_SUCCESS != (rc = orte_gpr.subscribe(1, &subs, 1, &trigs))) {
ORTE_ERROR_LOG(rc);
}
free(segment);
free(sub.name);
free(trig.name);
OBJ_RELEASE(values[0]);
OBJ_RELEASE(values[1]);
return rc;
}
static bool orte_odls_process_child_died( pid_t pid, unsigned int timeout,
int* exit_status )
{
int error;
HANDLE handle = OpenProcess( PROCESS_TERMINATE | SYNCHRONIZE, FALSE,
(DWORD)pid );
if( INVALID_HANDLE_VALUE == handle ) {
error = GetLastError();
/* Let's suppose that the process dissapear ... by now */
return true;
}
CloseHandle(handle);
/* The child didn't die, so return false */
return false;
}
static int orte_odls_process_kill_local( pid_t pid, int sig_num )
{
if( false == TerminateProcess( (HANDLE)pid, 1 ) ) {
return (int)GetLastError();
}
return 0;
}
static int orte_odls_process_kill_local_procs(orte_jobid_t job, bool set_state)
{
odls_process_child_t *child;
opal_list_item_t *item;
int rc, exit_status;
opal_list_t procs_killed;
orte_namelist_t *proc;
OBJ_CONSTRUCT(&procs_killed, opal_list_t);
/* since we are going to be working with the global list of
* children, we need to protect that list from modification
* by other threads
*/
OPAL_THREAD_LOCK(&orte_odls_process.mutex);
for (item = opal_list_get_first(&orte_odls_process.children);
item != opal_list_get_end(&orte_odls_process.children);
item = opal_list_get_next(item)) {
child = (odls_process_child_t*)item;
/* is this process alive? if not, then nothing for us
* to do to it
*/
if (!child->alive) {
continue;
}
/* do we have a child from the specified job? Because the
* job could be given as a WILDCARD value, we must use
* the dss.compare function to check for equality.
*/
if (ORTE_EQUAL != orte_dss.compare(&job, &(child->name->jobid), ORTE_JOBID)) {
continue;
}
/* de-register the SIGCHILD callback for this pid */
orte_wait_cb_cancel(child->pid);
/* Send a sigterm to the process. */
if (0 != orte_odls_process_kill_local(child->pid, SIGTERM)) {
int err = GetLastError();
opal_show_help("help-odls-default.txt",
"odls-default:could-not-send-kill",
true, orte_system_info.nodename, child->pid, err);
goto MOVEON;
}
/* The kill succeeded. Wait up to timeout_before_sigkill
seconds to see if it died. */
if (!orte_odls_process_child_died(child->pid, orte_odls_globals.timeout_before_sigkill, &exit_status)) {
/* try killing it again */
orte_odls_process_kill_local(child->pid, SIGKILL);
/* Double check that it actually died this time */
if (!orte_odls_process_child_died(child->pid, orte_odls_globals.timeout_before_sigkill, &exit_status)) {
opal_show_help("help-odls-default.txt",
"odls-default:could-not-kill",
true, orte_system_info.nodename, child->pid);
}
}
MOVEON:
/* set the process to "not alive" */
child->alive = false;
/* add this proc to the local list */
proc = OBJ_NEW(orte_namelist_t);
if (ORTE_SUCCESS != (rc = orte_dss.copy((void**)&(proc->name), child->name, ORTE_NAME))) {
ORTE_ERROR_LOG(rc);
opal_condition_signal(&orte_odls_process.cond);
OPAL_THREAD_UNLOCK(&orte_odls_process.mutex);
return rc;
}
opal_list_append(&procs_killed, &proc->item);
}
/* we are done with the global list, so we can now release
* any waiting threads - this also allows any callbacks to work
*/
opal_condition_signal(&orte_odls_process.cond);
OPAL_THREAD_UNLOCK(&orte_odls_process.mutex);
/* deconstruct the local list and update the process states on the registry, if indicated */
while (NULL != (item = opal_list_remove_first(&procs_killed))) {
proc = (orte_namelist_t*)item;
if (set_state) {
if (ORTE_SUCCESS != (rc = orte_smr.set_proc_state(proc->name, ORTE_PROC_STATE_TERMINATED, exit_status))) {
ORTE_ERROR_LOG(rc);
/* don't exit out even if this didn't work - we still might need to kill more
* processes, so just keep trucking
*/
}
}
OBJ_RELEASE(proc);
}
OBJ_DESTRUCT(&procs_killed);
return ORTE_SUCCESS;
}
/*
* Wait for a callback indicating the child has completed.
*/
static void odls_process_wait_local_proc(pid_t pid, int status, void* cbdata)
{
odls_process_child_t *child;
opal_list_item_t *item;
bool aborted;
char *job, *vpid, *abort_file;
struct _stat buf;
int rc;
/* since we are going to be working with the global list of
* children, we need to protect that list from modification
* by other threads. This will also be used to protect us
* from race conditions on any abort situation
*/
OPAL_THREAD_LOCK(&orte_odls_process.mutex);
/* find this child */
for (item = opal_list_get_first(&orte_odls_process.children);
item != opal_list_get_end(&orte_odls_process.children);
item = opal_list_get_next(item)) {
child = (odls_process_child_t*)item;
if (child->alive && pid == child->pid) { /* found it */
goto GOTCHILD;
}
}
/* get here if we didn't find the child, or if the specified child is already
* dead. If the latter, then we have a problem as it means we are detecting
* it exiting multiple times
*/
ORTE_ERROR_LOG(ORTE_ERR_NOT_FOUND);
opal_condition_signal(&orte_odls_process.cond);
OPAL_THREAD_UNLOCK(&orte_odls_process.mutex);
return;
GOTCHILD:
orte_iof.iof_flush();
/* determine the state of this process */
aborted = false;
if(WIFEXITED(status)) {
/* even though the process exited "normally", it is quite
* possible that this happened via an orte_abort call - in
* which case, we need to indicate this was an "abnormal"
* termination. See the note in "orte_abort.c" for
* an explanation of this process.
*
* For our purposes here, we need to check for the existence
* of an "abort" file in this process' session directory. If
* we find it, then we know that this was an abnormal termination.
*/
if (ORTE_SUCCESS != (rc = orte_ns.convert_jobid_to_string(&job, child->name->jobid))) {
ORTE_ERROR_LOG(rc);
goto MOVEON;
}
if (ORTE_SUCCESS != (rc = orte_ns.convert_vpid_to_string(&vpid, child->name->vpid))) {
ORTE_ERROR_LOG(rc);
free(job);
goto MOVEON;
}
abort_file = opal_os_path(false, orte_process_info.universe_session_dir,
job, vpid, "abort", NULL );
free(job);
free(vpid);
if (0 == _stat(abort_file, &buf)) {
/* the abort file must exist - there is nothing in it we need. It's
* meer existence indicates that an abnormal termination occurred
*/
aborted = true;
free(abort_file);
}
} else {
/* the process was terminated with a signal! That's definitely
* abnormal, so indicate that condition
*/
aborted = true;
}
MOVEON:
/* set this proc to "not alive" */
child->alive = false;
/* Clean up the session directory as if we were the process
* itself. This covers the case where the process died abnormally
* and didn't cleanup its own session directory.
*/
orte_session_dir_finalize(child->name);
/* Need to unlock before we call set_proc_state as this is going to generate
* a trigger that will eventually callback to us
*/
opal_condition_signal(&orte_odls_process.cond);
OPAL_THREAD_UNLOCK(&orte_odls_process.mutex);
if (aborted) {
rc = orte_smr.set_proc_state(child->name, ORTE_PROC_STATE_ABORTED, status);
} else {
rc = orte_smr.set_proc_state(child->name, ORTE_PROC_STATE_TERMINATED, status);
}
if (ORTE_SUCCESS != rc) {
ORTE_ERROR_LOG(rc);
}
}
/**
* Fork/exec the specified processes
*/
static int orte_odls_process_fork_local_proc(
orte_app_context_t* context,
odls_process_child_t *child,
orte_vpid_t vpid_start,
orte_vpid_t vpid_range,
bool want_processor,
size_t processor)
{
pid_t pid;
orte_iof_base_io_conf_t opts;
int rc;
int i = 0;
char** environ_copy;
char *param, *param2;
char *uri;
/* should pull this information from MPIRUN instead of going with
default */
opts.usepty = OMPI_ENABLE_PTY_SUPPORT;
/* BWB - Fix post beta. Should setup stdin in orterun and
make part of the app_context */
if( 0 == child->name->vpid ) {
opts.connect_stdin = true;
} else {
opts.connect_stdin = false;
}
/* Try to change to the context cwd and check that the app
exists and is executable */
if (ORTE_SUCCESS != (i = orte_rmgr.check_context_cwd(context, true))) {
opal_show_help("help-odls-default.txt",
"odls-default:chdir-error",
true, orte_system_info.nodename, context->cwd);
/* Tell the parent that Badness happened */
return ORTE_ERR_FATAL;
}
if (ORTE_SUCCESS != (i = orte_rmgr.check_context_app(context))) {
opal_show_help("help-odls-default.txt",
"odls-default:argv0-not-accessible",
true, orte_system_info.nodename, context->app);
/* Tell the parent that Badness happened */
return ORTE_ERR_FATAL;
}
/* setup base environment: copy the current environ and merge
in the app context environ */
if (NULL != context->env) {
environ_copy = opal_environ_merge(environ, context->env);
} else {
environ_copy = opal_argv_copy(environ);
}
/* special case handling for --prefix: this is somewhat icky,
but at least some users do this. :-\ It is possible that
when using --prefix, the user will also "-x PATH" and/or
"-x LD_LIBRARY_PATH", which would therefore clobber the
work that was done in the prior odls to ensure that we have
the prefix at the beginning of the PATH and
LD_LIBRARY_PATH. So examine the context->env and see if we
find PATH or LD_LIBRARY_PATH. If found, that means the
prior work was clobbered, and we need to re-prefix those
variables. */
for (i = 0; NULL != context->env && NULL != context->env[i]; ++i) {
char *newenv;
/* Reset PATH */
if (0 == strncmp("PATH=", context->env[i], 5)) {
asprintf(&newenv, "%s\\bin;%s",
context->prefix_dir, context->env[i] + 5);
opal_setenv("PATH", newenv, true, &environ_copy);
free(newenv);
}
/* Reset LD_LIBRARY_PATH */
else if (0 == strncmp("LD_LIBRARY_PATH=", context->env[i], 16)) {
asprintf(&newenv, "%s/lib:%s",
context->prefix_dir, context->env[i] + 16);
opal_setenv("LD_LIBRARY_PATH", newenv, true, &environ_copy);
free(newenv);
}
}
param = mca_base_param_environ_variable("rmgr","bootproxy","jobid");
opal_unsetenv(param, &environ_copy);
free(param);
if (want_processor) {
param = mca_base_param_environ_variable("mpi", NULL,
"paffinity_processor");
asprintf(&param2, "%lu", (unsigned long) processor);
opal_setenv(param, param2, true, &environ_copy);
free(param);
free(param2);
}
/* setup universe info */
if (NULL != orte_universe_info.name) {
param = mca_base_param_environ_variable("universe", NULL, NULL);
asprintf(&uri, "%s@%s:%s", orte_universe_info.uid,
orte_universe_info.host,
orte_universe_info.name);
opal_setenv(param, uri, true, &environ_copy);
free(param);
free(uri);
}
/* setup ns contact info */
if(NULL != orte_process_info.ns_replica_uri) {
uri = strdup(orte_process_info.ns_replica_uri);
} else {
uri = orte_rml.get_uri();
}
param = mca_base_param_environ_variable("ns","replica","uri");
opal_setenv(param, uri, true, &environ_copy);
free(param);
free(uri);
/* setup gpr contact info */
if(NULL != orte_process_info.gpr_replica_uri) {
uri = strdup(orte_process_info.gpr_replica_uri);
} else {
uri = orte_rml.get_uri();
}
param = mca_base_param_environ_variable("gpr","replica","uri");
opal_setenv(param, uri, true, &environ_copy);
free(param);
free(uri);
/* use same nodename as the starting daemon (us) */
param = mca_base_param_environ_variable("orte", "base", "nodename");
opal_setenv(param, orte_system_info.nodename, true, &environ_copy);
free(param);
/* push name into environment */
orte_ns_nds_env_put(child->name, vpid_start, vpid_range,
&environ_copy);
if (context->argv == NULL) {
context->argv = (char**)malloc(sizeof(char*)*2);
context->argv[0] = strdup(context->app);
context->argv[1] = NULL;
}
/* Flush all standard handles (stdin, stdout & stderr). */
_flushall();
{
intptr_t handle = _spawnve( _P_NOWAIT, context->app, context->argv, environ_copy );
if( -1 == handle ) {
opal_show_help("help-orted-launcer.txt", "orted-launcher:execv-error",
true, context->app, "TODO: some error");
orte_smr.set_proc_state(child->name, ORTE_PROC_STATE_ABORTED, -1);
return ORTE_ERROR;
}
pid = handle;
}
/* set the proc state to LAUNCHED and increment that counter so the trigger can fire
*/
if (ORTE_SUCCESS !=
(rc = orte_smr.set_proc_state(child->name, ORTE_PROC_STATE_LAUNCHED, 0))) {
ORTE_ERROR_LOG(rc);
return rc;
}
/* save the pid and indicate we've been launched */
child->pid = pid;
child->alive = true;
/* wait for the child process - dont register for wait
* callback until after I/O is setup and the pid registered -
* otherwise can receive the wait callback before the above is
* ever completed
*/
orte_wait_cb(pid, odls_process_wait_local_proc, NULL);
return ORTE_SUCCESS;
}
/**
* Launch all processes allocated to the current node.
*/
static int orte_odls_process_launch_local_procs(orte_gpr_notify_data_t *data)
{
int rc;
orte_std_cntr_t i, j, kv, kv2, *sptr;
orte_gpr_value_t *value, **values;
orte_gpr_keyval_t *kval;
orte_app_context_t *app;
orte_jobid_t job;
orte_vpid_t *vptr, start, range;
char *node_name;
opal_list_t app_context_list;
odls_process_child_t *child;
odls_process_app_context_t *app_item;
size_t num_processors;
bool want_processor;
opal_list_item_t *item, *item2;
/* parse the returned data to create the required structures
* for a fork launch. Since the data will contain information
* on procs for ALL nodes, we first have to find the value
* struct that contains info for our node.
*/
/* first, retrieve the job number we are to launch from the
* returned data - we can extract the jobid directly from the
* subscription name we created
*/
if (ORTE_SUCCESS != (rc = orte_schema.extract_jobid_from_std_trigger_name(&job, data->target))) {
ORTE_ERROR_LOG(rc);
return rc;
}
/* We need to create a list of the app_contexts
* so we can know what to launch - the process info only gives
* us an index into the app_context array, not the app_context
* info itself.
*/
OBJ_CONSTRUCT(&app_context_list, opal_list_t);
/* set the default values to INVALID */
start = ORTE_VPID_INVALID;
range = ORTE_VPID_INVALID;
values = (orte_gpr_value_t**)(data->values)->addr;
for (j=0, i=0; i < data->cnt && j < (data->values)->size; j++) { /* loop through all returned values */
if (NULL != values[j]) {
i++;
value = values[j];
if (0 == strcmp(value->tokens[0], ORTE_JOB_GLOBALS)) {
/* this came from the globals container, so it must contain
* the app_context(s), vpid_start, and vpid_range entries. Only one
* value object should ever come from that container
*/
for (kv=0; kv < value->cnt; kv++) {
kval = value->keyvals[kv];
if (strcmp(kval->key, ORTE_JOB_VPID_START_KEY) == 0) {
/* this can only occur once, so just store it */
if (ORTE_SUCCESS != (rc = orte_dss.get((void**)&vptr, kval->value, ORTE_VPID))) {
ORTE_ERROR_LOG(rc);
return rc;
}
start = *vptr;
continue;
}
if (strcmp(kval->key, ORTE_JOB_VPID_RANGE_KEY) == 0) {
/* this can only occur once, so just store it */
if (ORTE_SUCCESS != (rc = orte_dss.get((void**)&vptr, kval->value, ORTE_VPID))) {
ORTE_ERROR_LOG(rc);
return rc;
}
range = *vptr;
continue;
}
if (strcmp(kval->key, ORTE_JOB_APP_CONTEXT_KEY) == 0) {
/* this can occur multiple times since we allow multiple
* app_contexts on the orterun command line. Add them
* to the list
*/
if (ORTE_SUCCESS != (rc = orte_dss.get((void**)&app, kval->value, ORTE_APP_CONTEXT))) {
ORTE_ERROR_LOG(rc);
return rc;
}
app_item = OBJ_NEW(odls_process_app_context_t);
if (NULL == app_item) {
ORTE_ERROR_LOG(ORTE_ERR_OUT_OF_RESOURCE);
return ORTE_ERR_OUT_OF_RESOURCE;
}
app_item->app_context = app;
opal_list_append(&app_context_list, &app_item->super);
kval->value->data = NULL; /* protect the data storage from later release */
}
} /* end for loop to process global data */
} else {
/* this must have come from one of the process containers, so it must
* contain data for a proc structure - see if it
* belongs to this node
*/
for (kv=0; kv < value->cnt; kv++) {
kval = value->keyvals[kv];
if (strcmp(kval->key, ORTE_NODE_NAME_KEY) == 0) {
/* Most C-compilers will bark if we try to directly compare the string in the
* kval data area against a regular string, so we need to "get" the data
* so we can access it */
if (ORTE_SUCCESS != (rc = orte_dss.get((void**)&node_name, kval->value, ORTE_STRING))) {
ORTE_ERROR_LOG(rc);
return rc;
}
/* if this is our node...must also protect against a zero-length string */
if (NULL != node_name && 0 == strcmp(node_name, orte_system_info.nodename)) {
/* ...harvest the info into a new child structure */
child = OBJ_NEW(odls_process_child_t);
for (kv2 = 0; kv2 < value->cnt; kv2++) {
kval = value->keyvals[kv2];
if(strcmp(kval->key, ORTE_PROC_NAME_KEY) == 0) {
/* copy the name into the child object */
if (ORTE_SUCCESS != (rc = orte_dss.copy((void**)&(child->name), kval->value->data, ORTE_NAME))) {
ORTE_ERROR_LOG(rc);
return rc;
}
continue;
}
if(strcmp(kval->key, ORTE_PROC_APP_CONTEXT_KEY) == 0) {
if (ORTE_SUCCESS != (rc = orte_dss.get((void**)&sptr, kval->value, ORTE_STD_CNTR))) {
ORTE_ERROR_LOG(rc);
return rc;
}
child->app_idx = *sptr; /* save the index into the app_context objects */
continue;
}
} /* kv2 */
/* protect operation on the global list of children */
OPAL_THREAD_LOCK(&orte_odls_process.mutex);
opal_list_append(&orte_odls_process.children, &child->super);
opal_condition_signal(&orte_odls_process.cond);
OPAL_THREAD_UNLOCK(&orte_odls_process.mutex);
}
}
} /* for kv */
}
} /* for j */
}
/* determine if we are oversubscribed */
want_processor = true; /* default to taking it for ourselves */
opal_paffinity_base_get_num_processors(&rc);
num_processors = (size_t)rc;
if (opal_list_get_size(&orte_odls_process.children) > num_processors) { /* oversubscribed */
want_processor = false;
}
/* okay, now let's launch our local procs using a fork/exec */
i = 0;
/* protect operations involving the global list of children */
OPAL_THREAD_LOCK(&orte_odls_process.mutex);
for (item = opal_list_get_first(&orte_odls_process.children);
item != opal_list_get_end(&orte_odls_process.children);
item = opal_list_get_next(item)) {
child = (odls_process_child_t*)item;
/* is this child already alive? This can happen if
* we are asked to launch additional processes.
* If it has been launched, then do nothing
*/
if (child->alive) {
continue;
}
/* do we have a child from the specified job. Because the
* job could be given as a WILDCARD value, we must use
* the dss.compare function to check for equality.
*/
if (ORTE_EQUAL != orte_dss.compare(&job, &(child->name->jobid), ORTE_JOBID)) {
continue;
}
/* find the indicated app_context in the list */
for (item2 = opal_list_get_first(&app_context_list);
item2 != opal_list_get_end(&app_context_list);
item2 = opal_list_get_next(item2)) {
app_item = (odls_process_app_context_t*)item2;
if (child->app_idx == app_item->app_context->idx) {
app = app_item->app_context;
goto DOFORK;
}
}
/* get here if we couldn't find the app_context */
ORTE_ERROR_LOG(ORTE_ERR_NOT_FOUND);
opal_condition_signal(&orte_odls_process.cond);
OPAL_THREAD_UNLOCK(&orte_odls_process.mutex);
return ORTE_ERR_NOT_FOUND;
DOFORK:
/* must unlock prior to fork to keep things clean in the
* event library
*/
opal_condition_signal(&orte_odls_process.cond);
OPAL_THREAD_UNLOCK(&orte_odls_process.mutex);
if (ORTE_SUCCESS != (rc = orte_odls_process_fork_local_proc(app, child, start,
range, want_processor, i))) {
ORTE_ERROR_LOG(rc);
orte_smr.set_proc_state(child->name, ORTE_PROC_STATE_ABORTED, 0);
opal_condition_signal(&orte_odls_process.cond);
return rc;
}
/* reaquire lock so we don't double unlock... */
OPAL_THREAD_LOCK(&orte_odls_process.mutex);
i++;
}
/* cleanup */
while (NULL != (item = opal_list_remove_first(&app_context_list))) {
OBJ_RELEASE(item);
}
OBJ_DESTRUCT(&app_context_list);
opal_condition_signal(&orte_odls_process.cond);
OPAL_THREAD_UNLOCK(&orte_odls_process.mutex);
return ORTE_SUCCESS;
}
static int send_signal(pid_t pid, int signal)
{
return ORTE_ERROR;
}
static int orte_odls_process_signal_local_proc(const orte_process_name_t *proc, int32_t signal)
{
int rc;
opal_list_item_t *item;
odls_process_child_t *child;
/* protect operations involving the global list of children */
OPAL_THREAD_LOCK(&orte_odls_process.mutex);
/* if procs is NULL, then we want to signal all
* of the local procs, so just do that case
*/
if (NULL == proc) {
rc = ORTE_SUCCESS; /* pre-set this as an empty list causes us to drop to bottom */
for (item = opal_list_get_first(&orte_odls_process.children);
item != opal_list_get_end(&orte_odls_process.children);
item = opal_list_get_next(item)) {
child = (odls_process_child_t*)item;
if (ORTE_SUCCESS != (rc = send_signal(child->pid, (int)signal))) {
ORTE_ERROR_LOG(rc);
}
}
opal_condition_signal(&orte_odls_process.cond);
OPAL_THREAD_UNLOCK(&orte_odls_process.mutex);
return rc;
}
/* we want it sent to some specified process, so find it */
for (item = opal_list_get_first(&orte_odls_process.children);
item != opal_list_get_end(&orte_odls_process.children);
item = opal_list_get_next(item)) {
child = (odls_process_child_t*)item;
if (ORTE_EQUAL == orte_dss.compare(&(child->name), (void*)proc, ORTE_NAME)) {
/* unlock before signaling as this may generate a callback */
opal_condition_signal(&orte_odls_process.cond);
OPAL_THREAD_UNLOCK(&orte_odls_process.mutex);
if (ORTE_SUCCESS != (rc = send_signal(child->pid, (int)signal))) {
ORTE_ERROR_LOG(rc);
}
return rc;
}
}
/* only way to get here is if we couldn't find the specified proc.
* report that as an error and return it
*/
ORTE_ERROR_LOG(ORTE_ERR_NOT_FOUND);
opal_condition_signal(&orte_odls_process.cond);
OPAL_THREAD_UNLOCK(&orte_odls_process.mutex);
return ORTE_ERR_NOT_FOUND;
}
orte_odls_base_module_1_3_0_t orte_odls_process_module = {
orte_odls_process_subscribe_launch_data,
orte_odls_process_launch_local_procs,
orte_odls_process_kill_local_procs,
orte_odls_process_signal_local_proc
};
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