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/*******************************************************************************
* Copyright (c) 2009 Ericsson
*
* All rights reserved. This program and the accompanying materials are
* made available under the terms of the Eclipse Public License v1.0 which
* accompanies this distribution, and is available at
* http://www.eclipse.org/legal/epl-v10.html
*
* Contributors:
* Alvaro Sanchez-Leon (alvsan09@gmail.com) - Initial API and implementation
* Michel Dagenais (michel.dagenais@polymtl.ca) - Reference C implementation, used with permission
*******************************************************************************/
package org.eclipse.linuxtools.internal.lttng.core.state.evProcessor.state;
import org.eclipse.linuxtools.internal.lttng.core.TraceDebug;
import org.eclipse.linuxtools.internal.lttng.core.event.LttngEvent;
import org.eclipse.linuxtools.internal.lttng.core.state.StateStrings;
import org.eclipse.linuxtools.internal.lttng.core.state.StateStrings.ExecutionMode;
import org.eclipse.linuxtools.internal.lttng.core.state.StateStrings.IRQMode;
import org.eclipse.linuxtools.internal.lttng.core.state.StateStrings.ProcessStatus;
import org.eclipse.linuxtools.internal.lttng.core.state.evProcessor.ILttngEventProcessor;
import org.eclipse.linuxtools.internal.lttng.core.state.model.LTTngCPUState;
import org.eclipse.linuxtools.internal.lttng.core.state.model.LttngBdevState;
import org.eclipse.linuxtools.internal.lttng.core.state.model.LttngExecutionState;
import org.eclipse.linuxtools.internal.lttng.core.state.model.LttngIRQState;
import org.eclipse.linuxtools.internal.lttng.core.state.model.LttngProcessState;
import org.eclipse.linuxtools.internal.lttng.core.state.model.LttngTraceState;
import org.eclipse.linuxtools.tmf.core.event.ITmfTimestamp;
public abstract class AbsStateUpdate extends AbsStateProcessing implements
ILttngEventProcessor {
// ========================================================================
// Data
// =======================================================================
protected static final Long ANY_CPU = 0L;
// ========================================================================
// push and pop from stack
// =======================================================================
protected void push_state(Long cpu, StateStrings.ExecutionMode execMode,
String submode, int subModeId, ITmfTimestamp eventTime, LttngTraceState traceSt) {
LttngProcessState process = traceSt.getRunning_process().get(cpu);
LttngExecutionState exe_state = new LttngExecutionState();
exe_state.setExec_mode(execMode);
exe_state.setExec_submode(submode);
exe_state.setExec_submode_id(subModeId);
exe_state.setEntry_Time(eventTime.getValue());
exe_state.setChange_Time(eventTime.getValue());
exe_state.setCum_cpu_time(0L);
// if (process != null)
exe_state.setProc_status(process.getState().getProc_status());
process.pushToExecutionStack(exe_state);
}
protected void pop_state(Long cpu, StateStrings.ExecutionMode execMode,
LttngTraceState traceSt, ITmfTimestamp eventTime) {
LttngProcessState process = traceSt.getRunning_process().get(cpu);
if (!process.getState().getExec_mode().equals(execMode)) {
// Different execution mode
TraceDebug.debug("Different Execution Mode type \n\tTime:" //$NON-NLS-1$
+ eventTime.toString() + "\n\tprocess state has: \n\t" //$NON-NLS-1$
+ process.getState().getExec_mode().toString()
+ "\n\twhen pop_int is:\n\t" + execMode.toString()); //$NON-NLS-1$
return;
}
//The process state is updated within the pop method
process.popFromExecutionStack();
process.getState().setChange_Time(eventTime.getValue());
}
protected void irq_push_mode(LttngIRQState irqst, IRQMode state) {
irqst.pushToIrqStack(state);
}
protected void irq_set_base_mode(LttngIRQState irqst, IRQMode state) {
irqst.clearAndSetBaseToIrqStack(state);
}
protected void irq_pop_mode(LttngIRQState irqst) {
irqst.popFromIrqStack();
}
protected void cpu_push_mode(LTTngCPUState cpust, StateStrings.CpuMode state) {
// The initialization (init) creates a LttngCPUState instance per
// available cpu in the system
cpust.pushToCpuStack(state);
}
protected void cpu_pop_mode(LTTngCPUState cpust) {
cpust.popFromCpuStack();
}
/* clears the stack and sets the state passed as argument */
protected void cpu_set_base_mode(LTTngCPUState cpust,
StateStrings.CpuMode state) {
cpust.clearAndSetBaseToCpuStack(state);
}
protected void bdev_pop_mode(LttngBdevState bdevst) {
bdevst.popFromBdevStack();
}
/**
* Push a new received function pointer to the user_stack
*
* @param traceSt
* @param funcptr
* @param cpu
*/
protected void push_function(LttngTraceState traceSt, Long funcptr, Long cpu) {
// Get the related process
LttngProcessState process = traceSt.getRunning_process().get(cpu);
// update stack
process.pushToUserStack(funcptr);
// update the pointer to the current function on the corresponding
// process
process.setCurrent_function(funcptr);
}
protected void pop_function(LttngTraceState traceSt, LttngEvent trcEvent,
Long funcptr) {
Long cpu = trcEvent.getCpuId();
LttngProcessState process = traceSt.getRunning_process().get(cpu);
Long curr_function = process.getCurrent_function();
if (curr_function != null && !curr_function.equals(funcptr)) {
TraceDebug.debug("Different functions: " + funcptr + " current: " //$NON-NLS-1$ //$NON-NLS-2$
+ curr_function + " time stamp: " //$NON-NLS-1$
+ trcEvent.getTimestamp().toString());
// g_info("Different functions (%lu.%09lu): ignore it\n",
// tfs->parent.timestamp.tv_sec, tfs->parent.timestamp.tv_nsec);
// g_info("process state has %" PRIu64 " when pop_function is %"
// PRIu64
// "\n",
// process->current_function, funcptr);
// g_info("{ %u, %u, %s, %s, %s }\n",
// process->pid,
// process->ppid,
// g_quark_to_string(process->name),
// g_quark_to_string(process->brand),
// g_quark_to_string(process->state->s));
return;
}
process.popFromUserStack();
process.setCurrent_function(process.peekFromUserStack());
}
// ========================================================================
// General methods
// =======================================================================
// Adaption from MKDEV macro
protected Long mkdev(Long major, Long minor) {
Long result = null;
if (major != null && minor != null) {
result = (major << 20) | minor;
}
return result;
}
/*
* FIXME : this function should be called when we receive an event telling
* that release_task has been called in the kernel. In happens generally
* when the parent waits for its child termination, but may also happen in
* special cases in the child's exit : when the parent ignores its children
* SIGCCHLD or has the flag SA_NOCLDWAIT. It can also happen when the child
* is part of a killed thread group, but isn't the leader.
*/
protected boolean exit_process(LttngTraceState ts, LttngProcessState process) {
/*
* Wait for both schedule with exit dead and process free to happen.
* They can happen in any order.
*/
process.incrementFree_events();
if (process.getFree_events() < 2) {
return false;
}
process.clearExecutionStack();
process.clearUserStack();
ts.removeProcessState(process);
return true;
}
/**
* @param traceSt
* @param cpu
* @param pid
* @param tgid
* @param timestamp
* @return
*/
protected LttngProcessState create_process(LttngTraceState traceSt,
Long cpu, Long pid, Long tgid, final ITmfTimestamp timestamp) {
LttngProcessState process = create_process(traceSt, cpu, pid, tgid,
ProcessStatus.LTTV_STATE_UNNAMED.getInName(), timestamp);
return process;
}
/**
* @param traceSt
* @param cpu
* @param pid
* @param tgid
* @param name
* @param timestamp
* @return
*/
protected LttngProcessState create_process(LttngTraceState traceSt,
Long cpu, Long pid, Long tgid, String name,
final ITmfTimestamp timestamp) {
LttngProcessState process;
process = new LttngProcessState(cpu, pid, tgid, name, timestamp.getValue(), traceSt.getTraceId());
traceSt.addProcessState(process);
return process;
}
/**
* @param ts
* @param cpu
* @param pid
* @param timestamp
* , Used when a new process is needed
* @return
*/
protected LttngProcessState lttv_state_find_process_or_create(
LttngTraceState ts, Long cpu, Long pid, final ITmfTimestamp timestamp) {
LttngProcessState process = lttv_state_find_process(ts, cpu, pid);
/* Put ltt_time_zero creation time for non existing processes */
if (process == null) {
process = create_process(ts, cpu, pid, 0L, timestamp);
// leave only one entry in the execution stack
process.popFromExecutionStack();
LttngExecutionState es = process.getState();
es.setExec_mode(ExecutionMode.LTTV_STATE_MODE_UNKNOWN);
es.setProc_status(ProcessStatus.LTTV_STATE_UNNAMED);
}
return process;
}
}
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