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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.lttng.ui.views.resources.evProcessor;
import org.eclipse.linuxtools.lttng.core.event.LttngEvent;
import org.eclipse.linuxtools.lttng.core.state.StateStrings.Channels;
import org.eclipse.linuxtools.lttng.core.state.StateStrings.Events;
import org.eclipse.linuxtools.lttng.core.state.StateStrings.Fields;
import org.eclipse.linuxtools.lttng.core.state.evProcessor.ILttngEventProcessor;
import org.eclipse.linuxtools.lttng.core.state.model.LttngTraceState;
import org.eclipse.linuxtools.lttng.ui.model.trange.TimeRangeEventResource;
import org.eclipse.linuxtools.lttng.ui.model.trange.TimeRangeEventResource.ResourceTypes;
import org.eclipse.linuxtools.tmf.core.event.TmfTimeRange;
/**
* Creates instances of specific before state update handlers, per corresponding
* event.
*
* @author alvaro
*
*/
public class ResourcesBeforeUpdateHandlers {
/**
* <p>
* Handles: LTT_EVENT_SCHED_SCHEDULE
* </p>
* Replace C function named "before_schedchange_hook" in eventhooks.c
* <p>
* Fields: LTT_FIELD_PREV_PID, LTT_FIELD_NEXT_PID(?), LTT_FIELD_PREV_STATE
* (?)
* </p>
*
* @return
*/
final ILttngEventProcessor getBeforeSchedChangeHandler() {
AbsResourcesTRangeUpdate handler = new AbsResourcesTRangeUpdate() {
// @Override
@Override
public boolean process(LttngEvent trcEvent, LttngTraceState traceSt) {
// Create a time range for the cpu.
globalProcessBeforeExecmode(trcEvent, traceSt);
return false;
}
};
return handler;
}
/**
* <p>
* Handles: LTT_EVENT_IRQ_ENTRY, LTT_EVENT_IRQ_EXIT
* </p>
* Replace C function named "before_execmode_hook_irq" in eventhooks.c
*
* @return
*/
final ILttngEventProcessor getBeforeExecutionModeIrq() {
AbsResourcesTRangeUpdate handler = new AbsResourcesTRangeUpdate() {
// @Override
@Override
public boolean process(LttngEvent trcEvent, LttngTraceState traceSt) {
Long irqId = null;
// According to Ltt, we should not draw anything if the channel
// is the kernel one
if (trcEvent.getChannelName().equals(
Channels.LTT_CHANNEL_KERNEL.name())) {
return false;
} else {
if (trcEvent.getMarkerName().equals(
Events.LTT_EVENT_IRQ_ENTRY.getInName())) {
irqId = getAFieldLong(trcEvent, traceSt,
Fields.LTT_FIELD_IRQ_ID);
} else if (trcEvent.getMarkerName().equals(
Events.LTT_EVENT_IRQ_EXIT.getInName())) {
long cpu = trcEvent.getCpuId();
irqId = traceSt.getCpu_states().get(cpu)
.peekFromIrqStack();
if (irqId.equals(-1L)) {
// nothing to update
return false;
}
}
// softIrqId is the resource id here
TimeRangeEventResource localResource = resourcelist_obtain_irq(
traceSt, irqId);
// If the resource is missing in the list, add it
if (localResource == null) {
TmfTimeRange timeRange = traceSt.getContext()
.getTraceTimeWindow();
localResource = addLocalResource(timeRange
.getStartTime().getValue(), timeRange
.getEndTime().getValue(), traceSt.getTraceId(),
ResourceTypes.IRQ, irqId, trcEvent
.getTimestamp().getValue());
}
// get the start time
long stime = localResource.getNext_good_time();
// Get the resource state mode
String irqStateMode = localResource.getStateMode(traceSt);
// Call the makeDraw function
makeDraw(traceSt, stime,
trcEvent.getTimestamp().getValue(), localResource,
params, irqStateMode);
// Call the globalProcessBeforeExecmode() after, as
// it is needed by all
// getBeforeExecmode*SOMETHING*()
globalProcessBeforeExecmode(trcEvent, traceSt);
}
return false;
}
};
return handler;
}
/**
* <p>
* Handles: LTT_EVENT_SOFT_IRQ_RAISE, LTT_EVENT_SOFT_IRQ_ENTRY,
* LTT_EVENT_SOFT_IRQ_EXIT,
* </p>
* Replace C function named "before_execmode_hook_soft_irq" in eventhooks.c
* <p>
* Fields: LTT_FIELD_SOFT_IRQ_ID
* </p>
*
* @return
*/
final ILttngEventProcessor getBeforeExecutionModeSoftIrq() {
AbsResourcesTRangeUpdate handler = new AbsResourcesTRangeUpdate() {
// @Override
@Override
public boolean process(LttngEvent trcEvent, LttngTraceState traceSt) {
Long softIrqId = null;
// According to Ltt, we should not draw anything if the channel
// is the kernel one
if (trcEvent.getChannelName().equals(
Channels.LTT_CHANNEL_KERNEL.name())) {
return false;
} else {
if ((trcEvent.getMarkerName()
.equals(Events.LTT_EVENT_SOFT_IRQ_RAISE.getInName()))
|| (trcEvent.getMarkerName()
.equals(Events.LTT_EVENT_SOFT_IRQ_ENTRY
.getInName()))) {
softIrqId = getAFieldLong(trcEvent, traceSt,
Fields.LTT_FIELD_SOFT_IRQ_ID);
} else if (trcEvent.getMarkerName().equals(
Events.LTT_EVENT_SOFT_IRQ_EXIT.getInName())) {
long cpu = trcEvent.getCpuId();
softIrqId = traceSt.getCpu_states().get(cpu)
.peekFromSoftIrqStack();
if (softIrqId < 0) {
// nothing to update
return false;
}
}
// Add the resource to the resource list
// softIrqId is the resource id here
TimeRangeEventResource localResource = resourcelist_obtain_soft_irq(
traceSt, softIrqId);
// If the resource is missing in the list, add it
if (localResource == null) {
TmfTimeRange timeRange = traceSt.getContext()
.getTraceTimeWindow();
localResource = addLocalResource(timeRange
.getStartTime().getValue(), timeRange
.getEndTime().getValue(), traceSt.getTraceId(),
ResourceTypes.SOFT_IRQ, softIrqId, trcEvent
.getTimestamp().getValue());
}
// get the start time
long stime = localResource.getNext_good_time();
// Get the resource state mode
String softIrqStateMode = localResource
.getStateMode(traceSt);
// Call the makeDraw function
makeDraw(traceSt, stime,
trcEvent.getTimestamp().getValue(), localResource,
params, softIrqStateMode);
// Call the globalProcessBeforeExecmode() after, as
// it is needed by all
// getBeforeExecmode*SOMETHING*()
globalProcessBeforeExecmode(trcEvent, traceSt);
}
return false;
}
};
return handler;
}
/**
* <p>
* Handles: LTT_EVENT_TRAP_ENTRY, LTT_EVENT_TRAP_EXIT,
* LTT_EVENT_PAGE_FAULT_ENTRY, LTT_EVENT_PAGE_FAULT_EXIT,
* LTT_EVENT_PAGE_FAULT_NOSEM_ENTRY, LTT_EVENT_PAGE_FAULT_NOSEM_EXIT
* </p>
* Replace C function named "before_execmode_hook_trap" in eventhooks.c
* <p>
* Fields: LTT_FIELD_TRAP_ID
* </p>
*
* @return
*/
final ILttngEventProcessor getBeforeExecutionModeTrap() {
AbsResourcesTRangeUpdate handler = new AbsResourcesTRangeUpdate() {
// @Override
@Override
public boolean process(LttngEvent trcEvent, LttngTraceState traceSt) {
Long trapId = null;
// According to Ltt, we should not draw anything if the channel
// is the kernel one
if (trcEvent.getChannelName().equals(
Channels.LTT_CHANNEL_KERNEL.name())) {
return false;
} else {
if ((trcEvent.getMarkerName()
.equals(Events.LTT_EVENT_TRAP_ENTRY.getInName()))
|| (trcEvent.getMarkerName()
.equals(Events.LTT_EVENT_PAGE_FAULT_ENTRY
.getInName()))
|| (trcEvent.getMarkerName()
.equals(Events.LTT_EVENT_PAGE_FAULT_NOSEM_ENTRY
.getInName()))) {
trapId = getAFieldLong(trcEvent, traceSt,
Fields.LTT_FIELD_TRAP_ID);
} else if ((trcEvent.getMarkerName()
.equals(Events.LTT_EVENT_TRAP_EXIT.getInName()))
|| (trcEvent.getMarkerName()
.equals(Events.LTT_EVENT_PAGE_FAULT_EXIT
.getInName()))
|| (trcEvent.getMarkerName()
.equals(Events.LTT_EVENT_PAGE_FAULT_NOSEM_EXIT
.getInName()))) {
long cpu = trcEvent.getCpuId();
trapId = traceSt.getCpu_states().get(cpu)
.peekFromTrapStack();
if (trapId.equals(-1L)) {
// Nothing to update
return false;
}
} else {
return false;
}
// Add the resource to the resource list
// trapId is the resource id here
TimeRangeEventResource localResource = resourcelist_obtain_trap(
traceSt, trapId);
// If the resource is missing in the list, add it
if (localResource == null) {
TmfTimeRange timeRange = traceSt.getContext()
.getTraceTimeWindow();
localResource = addLocalResource(timeRange
.getStartTime().getValue(), timeRange
.getEndTime().getValue(), traceSt.getTraceId(),
ResourceTypes.TRAP, trapId, trcEvent
.getTimestamp().getValue());
}
// Determine the trap state.
String trapStateMode = localResource.getStateMode(traceSt);
long stime = localResource.getNext_good_time();
makeDraw(traceSt, stime,
trcEvent.getTimestamp().getValue(), localResource,
params, trapStateMode);
// Call the globalProcessBeforeExecmode() after, as
// it is needed by all
// getBeforeExecmode*SOMETHING*()
globalProcessBeforeExecmode(trcEvent, traceSt);
}
return false;
}
};
return handler;
}
/**
* <p>
* Handles: LTT_EVENT_REQUEST_ISSUE, LTT_EVENT_REQUEST_COMPLETE
* </p>
* Replace C function named "before_bdev_event_hook" in eventhooks.c
* <p>
* Fields: LTT_FIELD_MAJOR, LTT_FIELD_MINOR, LTT_FIELD_OPERATION (?)
* </p>
*
* @return
*/
final ILttngEventProcessor getBeforeBdevEvent() {
AbsResourcesTRangeUpdate handler = new AbsResourcesTRangeUpdate() {
// @Override
@Override
public boolean process(LttngEvent trcEvent, LttngTraceState traceSt) {
Long major = getAFieldLong(trcEvent, traceSt,
Fields.LTT_FIELD_MAJOR);
Long minor = getAFieldLong(trcEvent, traceSt,
Fields.LTT_FIELD_MINOR);
// This is useless even in LTTv!
// Long oper = getAFieldLong(trcEvent, traceSt,
// Fields.LTT_FIELD_OPERATION);
Long bdevId = getMkdevId(major, minor);
// According to Lttv, bdevId (obtain from MKDEV macro) is
// the id here
TimeRangeEventResource localResource = resourcelist_obtain_bdev(
traceSt, bdevId);
if (localResource == null) {
TmfTimeRange timeRange = traceSt.getContext()
.getTraceTimeWindow();
localResource = addLocalResource(timeRange.getStartTime()
.getValue(), timeRange.getEndTime().getValue(),
traceSt.getTraceId(), ResourceTypes.BDEV, bdevId,
trcEvent.getTimestamp().getValue());
}
// get the start time
long stime = localResource.getNext_good_time();
// Get the resource state mode
String bdevStateMode = localResource.getStateMode(traceSt);
// Call the makeDraw function
makeDraw(traceSt, stime, trcEvent.getTimestamp().getValue(),
localResource, params, bdevStateMode);
return false;
}
};
return handler;
}
}
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