| /////////////////////////////////////////////////////////////////////////////// |
| // |
| // @@@ START COPYRIGHT @@@ |
| // |
| // Licensed to the Apache Software Foundation (ASF) under one |
| // or more contributor license agreements. See the NOTICE file |
| // distributed with this work for additional information |
| // regarding copyright ownership. The ASF licenses this file |
| // to you under the Apache License, Version 2.0 (the |
| // "License"); you may not use this file except in compliance |
| // with the License. You may obtain a copy of the License at |
| // |
| // http://www.apache.org/licenses/LICENSE-2.0 |
| // |
| // Unless required by applicable law or agreed to in writing, |
| // software distributed under the License is distributed on an |
| // "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY |
| // KIND, either express or implied. See the License for the |
| // specific language governing permissions and limitations |
| // under the License. |
| // |
| // @@@ END COPYRIGHT @@@ |
| // |
| /////////////////////////////////////////////////////////////////////////////// |
| |
| #include <stdio.h> |
| #include "reqqueue.h" |
| #include "montrace.h" |
| #include "monsonar.h" |
| #include "monlogging.h" |
| |
| extern CMonStats *MonStats; |
| extern CNode *MyNode; |
| extern CNodeContainer *Nodes; |
| extern bool NameServerEnabled; |
| |
| CExtDumpReq::CExtDumpReq (reqQueueMsg_t msgType, int pid, |
| struct message_def *msg ) |
| : CExternalReq(msgType, pid, msg) |
| { |
| // Add eyecatcher sequence as a debugging aid |
| memcpy(&eyecatcher_, "RQEB", 4); |
| } |
| |
| CExtDumpReq::~CExtDumpReq() |
| { |
| // Alter eyecatcher sequence as a debugging aid to identify deleted object |
| memcpy(&eyecatcher_, "rqeb", 4); |
| } |
| |
| void CExtDumpReq::populateRequestString( void ) |
| { |
| char strBuf[MON_STRING_BUF_SIZE/2] = { 0 }; |
| |
| snprintf( strBuf, sizeof(strBuf), |
| "ExtReq(%s) req #=%ld " |
| "requester(name=%s/nid=%d/pid=%d/os_pid=%d/verifier=%d) " |
| "target(name=%s/nid=%d/pid=%d/verifier=%d)" |
| , CReqQueue::svcReqType[reqType_], getId() |
| , msg_->u.request.u.dump.process_name |
| , msg_->u.request.u.dump.nid |
| , msg_->u.request.u.dump.pid |
| , pid_ |
| , msg_->u.request.u.dump.verifier |
| , msg_->u.request.u.dump.target_process_name |
| , msg_->u.request.u.dump.target_nid |
| , msg_->u.request.u.dump.target_pid |
| , msg_->u.request.u.dump.target_verifier ); |
| requestString_.assign( strBuf ); |
| } |
| |
| void CExtDumpReq::performRequest() |
| { |
| const char method_name[] = "CExtDumpReq::performRequest"; |
| TRACE_ENTRY; |
| |
| CProcess *cloneProcess = NULL; |
| CProcess *targetProcess = NULL; |
| CProcess *requester = NULL; |
| CLNode *lnode; |
| string target_process_name; |
| int target_nid = -1; |
| int target_pid = -1; |
| Verifier_t target_verifier = -1; |
| int rc = MPI_SUCCESS; |
| |
| // Record statistics (sonar counters) |
| if (sonar_verify_state(SONAR_ENABLED | SONAR_MONITOR_ENABLED)) |
| MonStats->req_type_dump_Incr(); |
| |
| // Trace info about request |
| if (trace_settings & (TRACE_REQUEST | TRACE_PROCESS)) |
| { |
| trace_printf( "%s@%d request #%ld: Dump, requester %s (%d, %d:%d), " |
| "target %s (%d, %d:%d), path=%s\n" |
| , method_name, __LINE__, id_ |
| , msg_->u.request.u.dump.process_name |
| , msg_->u.request.u.dump.nid |
| , msg_->u.request.u.dump.pid |
| , msg_->u.request.u.dump.verifier |
| , msg_->u.request.u.dump.target_process_name |
| , msg_->u.request.u.dump.target_nid |
| , msg_->u.request.u.dump.target_pid |
| , msg_->u.request.u.dump.target_verifier |
| , msg_->u.request.u.dump.path); |
| } |
| |
| |
| target_nid = msg_->u.request.u.dump.target_nid; |
| target_pid = msg_->u.request.u.dump.target_pid; |
| target_process_name = (const char *) msg_->u.request.u.dump.target_process_name; |
| nid_ = msg_->u.request.u.dump.nid; |
| verifier_ = msg_->u.request.u.dump.verifier; |
| processName_ = msg_->u.request.u.dump.process_name; |
| target_verifier = msg_->u.request.u.dump.target_verifier; |
| |
| if ( processName_.size() ) |
| { // find by name |
| requester = MyNode->GetProcess( processName_.c_str() |
| , verifier_ ); |
| } |
| else |
| { // find by pid |
| requester = MyNode->GetProcess( pid_ |
| , verifier_ ); |
| } |
| |
| if ( requester ) |
| { |
| if ( target_process_name.size() ) |
| { // find by name |
| if (msg_->u.request.u.dump.target_process_name[0] == '$' ) |
| { |
| targetProcess = Nodes->GetProcess( target_process_name.c_str() |
| , target_verifier ); |
| } |
| } |
| else |
| { // find by nid, pid |
| targetProcess = Nodes->GetProcess( target_nid |
| , target_pid |
| , target_verifier ); |
| } |
| |
| if ( !targetProcess ) |
| { |
| if (NameServerEnabled) |
| { |
| if ( target_process_name.size() ) |
| { // Name Server find by name:verifier |
| if (trace_settings & TRACE_REQUEST) |
| { |
| trace_printf( "%s@%d" " - Getting targetProcess from Name Server (%s:%d)" "\n" |
| , method_name, __LINE__ |
| , target_process_name.c_str() |
| , target_verifier ); |
| } |
| if (msg_->u.request.u.dump.target_process_name[0] == '$' ) |
| { |
| cloneProcess = Nodes->CloneProcessNs( target_process_name.c_str() |
| , target_verifier ); |
| targetProcess = cloneProcess; |
| } |
| } |
| else |
| { // Name Server find by nid,pid:verifier |
| if (trace_settings & TRACE_REQUEST) |
| { |
| trace_printf( "%s@%d" " - Getting targetProcess from Name Server (%d,%d:%d)\n" |
| , method_name, __LINE__ |
| , target_nid |
| , target_pid |
| , target_verifier ); |
| } |
| cloneProcess = Nodes->CloneProcessNs( target_nid |
| , target_pid |
| , target_verifier ); |
| targetProcess = cloneProcess; |
| } |
| if (targetProcess) |
| { |
| if (trace_settings & TRACE_REQUEST) |
| trace_printf( "%s@%d - Found targetProcess %s (%d,%d:%d), clone=%d\n" |
| , method_name, __LINE__ |
| , targetProcess->GetName() |
| , targetProcess->GetNid() |
| , targetProcess->GetPid() |
| , targetProcess->GetVerifier() |
| , targetProcess->IsClone() ); |
| } |
| } |
| } |
| |
| if ( targetProcess ) |
| { |
| if (trace_settings & (TRACE_REQUEST | TRACE_PROCESS)) |
| trace_printf("%s@%d - Dump Process name=%s, nid=%d, pid=%d\n", |
| method_name, __LINE__, targetProcess->GetName(), |
| targetProcess->GetNid(), targetProcess->GetPid()); |
| targetProcess->parentContext(msg_); |
| lnode = Nodes->GetLNode(target_nid); |
| if (lnode->Dump_Process(requester, |
| targetProcess, |
| msg_->u.request.u.dump.path) != SUCCESS) |
| { |
| rc = MPI_ERR_SPAWN; |
| } |
| } |
| else |
| { |
| if (trace_settings & (TRACE_REQUEST | TRACE_PROCESS)) |
| trace_printf("%s@%d - Can't find target, rc=%d\n", method_name, __LINE__, rc); |
| rc = MPI_ERR_NAME; |
| } |
| |
| if (rc != MPI_SUCCESS) |
| { // Unable to dump process so send an error reply. |
| // |
| // Otherwise the dump has been initiated and reply will be sent |
| // upon completion. |
| |
| if (NameServerEnabled && cloneProcess) |
| { |
| if (trace_settings & (TRACE_INIT | TRACE_RECOVERY | TRACE_REQUEST | TRACE_SYNC | TRACE_TMSYNC)) |
| { |
| trace_printf( "%s@%d - Deleting clone process %s, (%d,%d:%d)\n" |
| , method_name, __LINE__ |
| , cloneProcess->GetName() |
| , cloneProcess->GetNid() |
| , cloneProcess->GetPid() |
| , cloneProcess->GetVerifier() ); |
| } |
| Nodes->DeleteCloneProcess( cloneProcess ); |
| } |
| |
| if (trace_settings & (TRACE_REQUEST | TRACE_PROCESS)) |
| trace_printf("%s@%d - Unsuccessful rc=%d\n", method_name, __LINE__, rc); |
| // build reply |
| msg_->u.reply.type = ReplyType_Dump; |
| msg_->u.reply.u.dump.nid = target_nid; |
| msg_->u.reply.u.dump.pid = target_pid; |
| msg_->u.reply.u.dump.verifier = target_verifier; |
| strcpy (msg_->u.reply.u.dump.process_name, target_process_name.c_str()); |
| msg_->u.reply.u.dump.core_file[0] = 0; |
| msg_->u.reply.u.dump.return_code = rc; |
| |
| // Send reply to requester |
| lioreply(msg_, pid_); |
| } |
| } |
| else |
| { // Reply to requester so it can release the buffer. |
| if (trace_settings & (TRACE_REQUEST | TRACE_PROCESS)) |
| trace_printf("%s@%d - Can't find requester, rc=%d\n", method_name, __LINE__, MPI_ERR_EXITED); |
| // We don't know about this process. |
| errorReply( MPI_ERR_EXITED ); |
| } |
| |
| TRACE_EXIT; |
| } |
