import org.eclipse.linuxtools.lttng2.kernel.core.trace.LttngStrings;
import org.eclipse.linuxtools.tmf.core.ctfadaptor.CtfTmfEvent;
import org.eclipse.linuxtools.tmf.core.event.ITmfEventField;
-import org.eclipse.linuxtools.tmf.core.statesystem.AttributeNotFoundException;
-import org.eclipse.linuxtools.tmf.core.statesystem.TimeRangeException;
-import org.eclipse.linuxtools.tmf.core.statesystem.helpers.IStateSystemBuilder;
+import org.eclipse.linuxtools.tmf.core.exceptions.AttributeNotFoundException;
+import org.eclipse.linuxtools.tmf.core.exceptions.StateValueTypeException;
+import org.eclipse.linuxtools.tmf.core.exceptions.TimeRangeException;
+import org.eclipse.linuxtools.tmf.core.statesystem.IStateSystemBuilder;
import org.eclipse.linuxtools.tmf.core.statevalue.ITmfStateValue;
-import org.eclipse.linuxtools.tmf.core.statevalue.StateValueTypeException;
import org.eclipse.linuxtools.tmf.core.statevalue.TmfStateValue;
/**
/* Event names HashMap. TODO: This can be discarded once we move to Java 7 */
private final HashMap<String, Integer> knownEventNames;
+ /* Common locations in the attribute tree */
+ private int cpusNode = -1;
+ private int threadsNode = -1;
+ private int irqsNode = -1;
+ private int softIrqsNode = -1;
+
CtfKernelHandler(BlockingQueue<CtfTmfEvent> eventsQueue) {
assert (eventsQueue != null);
this.inQueue = eventsQueue;
return;
}
CtfTmfEvent event;
+ setupCommonLocations();
try {
event = inQueue.take();
private void closeStateSystem() {
/* Close the History system, if there is one */
+ if (currentEvent == null) {
+ return;
+ }
try {
ss.closeHistory(currentEvent.getTimestamp().getValue());
} catch (TimeRangeException e) {
if (eventCpu >= currentCPUNodes.size()) {
/* We need to add this node to the vector */
for (Integer i = currentCPUNodes.size(); i < eventCpu + 1; i++) {
- quark = ss.getQuarkAbsoluteAndAdd(Attributes.CPUS, i.toString());
+ quark = ss.getQuarkRelativeAndAdd(cpusNode, i.toString());
currentCPUNodes.add(quark);
- quark = ss.getQuarkAbsoluteAndAdd(Attributes.THREADS, Attributes.UNKNOWN);
+ quark = ss.getQuarkRelativeAndAdd(threadsNode, Attributes.UNKNOWN);
currentThreadNodes.add(quark);
}
}
try {
/*
* Feed event to the history system if it's known to cause a state
- * transition See:
- * https://projectwiki.dorsal.polymtl.ca/index.php/State_transitions
+ * transition.
*/
switch (getEventIndex(eventName)) {
case 1: // "exit_syscall":
- /* Fields: int64 ret */
- /* Pop "syscall" from the Exec_mode_stack */
- quark = ss.getQuarkRelativeAndAdd(currentThreadNode, Attributes.EXEC_MODE_STACK);
- try {
- ss.popAttribute(ts, quark);
- } catch (AttributeNotFoundException e1) {
- /*
- * meh, can happen if we're missing events, we'll just
- * silently ignore it.
- */
- System.err.println(event.getTimestamp()
- + " Popping empty attribute: " + e1.getMessage()); //$NON-NLS-1$
- }
+ /* Fields: int64 ret */
+ {
+ /* Clear the current system call on the process */
+ quark = ss.getQuarkRelativeAndAdd(currentThreadNode, Attributes.SYSTEM_CALL);
+ value = TmfStateValue.nullValue();
+ ss.modifyAttribute(ts, value, quark);
+
+ /* Put the process' status back to user mode */
+ quark = ss.getQuarkRelativeAndAdd(currentThreadNode, Attributes.STATUS);
+ value = TmfStateValue.newValueInt(Attributes.STATUS_RUN_USERMODE);
+ ss.modifyAttribute(ts, value, quark);
+ }
break;
case 2: // "irq_handler_entry":
- /* Fields: int32 irq, string name */
+ /* Fields: int32 irq, string name */
+ {
Integer irqId = ((Long) content.getField(LttngStrings.IRQ).getValue()).intValue();
- /* Push the IRQ to the CPU's IRQ_stack */
- quark = ss.getQuarkRelativeAndAdd(currentCPUNode, Attributes.IRQ_STACK);
- value = TmfStateValue.newValueInt(irqId);
- ss.pushAttribute(ts, value, quark);
+ /* Mark this IRQ as active in the resource tree.
+ * The state value = the CPU on which this IRQ is sitting */
+ quark = ss.getQuarkRelativeAndAdd(irqsNode, irqId.toString());
+ value = TmfStateValue.newValueInt(event.getCPU());
+ ss.modifyAttribute(ts, value, quark);
/* Change the status of the running process to interrupted */
quark = ss.getQuarkRelativeAndAdd(currentThreadNode, Attributes.STATUS);
- value = TmfStateValue.newValueInt(Attributes.STATUS_WAIT_CPU);
+ value = TmfStateValue.newValueInt(Attributes.STATUS_INTERRUPTED);
ss.modifyAttribute(ts, value, quark);
+\r
+ /* Change the status of the CPU to interrupted */\r
+ quark = ss.getQuarkRelativeAndAdd(currentCPUNode, Attributes.STATUS);\r
+ value = TmfStateValue.newValueInt(Attributes.CPU_STATUS_INTERRUPTED);\r
+ ss.modifyAttribute(ts, value, quark);\r
+ }
break;
case 3: // "irq_handler_exit":
- /* Fields: int32 irq, int32 ret */
- int stackDepth = 0;
-
- /* Pop the IRQ from the CPU's IRQ_stack */
- quark = ss.getQuarkRelativeAndAdd(currentCPUNode, Attributes.IRQ_STACK);
- try {
- ss.popAttribute(ts, quark);
- } catch (AttributeNotFoundException e1) {
- System.err.print(event.getTimestamp()
- + " Popping empty attribute: " + e1.getMessage()); //$NON-NLS-1$
- }
+ /* Fields: int32 irq, int32 ret */
+ {
+ Integer irqId = ((Long) content.getField(LttngStrings.IRQ).getValue()).intValue();
- /*
- * If this was the last IRQ on the stack, set the process back
- * to running
- */
- /* 'quark' should still be valid */
- try {
- stackDepth = ss.queryOngoingState(quark).unboxInt();
- } catch (StateValueTypeException e) {
- /* IRQ_stack SHOULD be of int type, this shouldn't happen */
- e.printStackTrace();
- }
- if (stackDepth == 0) {
- quark = ss.getQuarkRelativeAndAdd(currentThreadNode, Attributes.STATUS);
- value = TmfStateValue.newValueInt(Attributes.STATUS_RUN);
- ss.modifyAttribute(ts, value, quark);
- }
+ /* Put this IRQ back to inactive in the resource tree */
+ quark = ss.getQuarkRelativeAndAdd(irqsNode, irqId.toString());
+ value = TmfStateValue.nullValue();
+ ss.modifyAttribute(ts, value, quark);
+
+ /* Set the previous process back to running */
+ setProcessToRunning(ts, currentThreadNode);
+\r
+ /* Set the CPU status back to "busy" or "idle" */\r
+ cpuExitInterrupt(ts, currentCPUNode);\r
+ }
break;
case 4: // "softirq_entry":
- /* Fields: int32 vec */
+ /* Fields: int32 vec */
+ {
+ Integer softIrqId = ((Long) content.getField(LttngStrings.VEC).getValue()).intValue();
+
+ /* Mark this SoftIRQ as active in the resource tree.
+ * The state value = the CPU on which this SoftIRQ is processed */
+ quark = ss.getQuarkRelativeAndAdd(softIrqsNode, softIrqId.toString());
+ value = TmfStateValue.newValueInt(event.getCPU());
+ ss.modifyAttribute(ts, value, quark);
+
+ /* Change the status of the running process to interrupted */
+ quark = ss.getQuarkRelativeAndAdd(currentThreadNode, Attributes.STATUS);
+ value = TmfStateValue.newValueInt(Attributes.STATUS_INTERRUPTED);
+ ss.modifyAttribute(ts, value, quark);
+\r
+ /* Change the status of the CPU to interrupted */\r
+ quark = ss.getQuarkRelativeAndAdd(currentCPUNode, Attributes.STATUS);\r
+ value = TmfStateValue.newValueInt(Attributes.CPU_STATUS_INTERRUPTED);\r
+ ss.modifyAttribute(ts, value, quark);\r
+ }
break;
case 5: // "softirq_exit":
- /* Fields: int32 vec */
+ /* Fields: int32 vec */
+ {
+ Integer softIrqId = ((Long) content.getField(LttngStrings.VEC).getValue()).intValue();
+
+ /* Put this SoftIRQ back to inactive (= -1) in the resource tree */
+ quark = ss.getQuarkRelativeAndAdd(softIrqsNode, softIrqId.toString());
+ value = TmfStateValue.nullValue();
+ ss.modifyAttribute(ts, value, quark);
+
+ /* Set the previous process back to running */
+ setProcessToRunning(ts, currentThreadNode);
+\r
+ /* Set the CPU status back to "busy" or "idle" */\r
+ cpuExitInterrupt(ts, currentCPUNode);\r
+ }
break;
case 6: // "softirq_raise":
- /* Fields: int32 vec */
+ /* Fields: int32 vec */
+ {
+ Integer softIrqId = ((Long) content.getField(LttngStrings.VEC).getValue()).intValue();
+
+ /* Mark this SoftIRQ as *raised* in the resource tree.
+ * State value = -2 */
+ quark = ss.getQuarkRelativeAndAdd(softIrqsNode, softIrqId.toString());
+ value = TmfStateValue.newValueInt(Attributes.SOFT_IRQ_RAISED);
+ ss.modifyAttribute(ts, value, quark);
+ }
break;
case 7: // "sched_switch":
- /*
- * Fields: string prev_comm, int32 prev_tid, int32 prev_prio,
- * int64 prev_state, string next_comm, int32 next_tid, int32
- * next_prio
- */
-
- // prev_comm doesn't seem to get populated...
- String prevProcessName = (String) content.getField(LttngStrings.PREV_COMM).getValue();
+ /*
+ * Fields: string prev_comm, int32 prev_tid, int32 prev_prio, int64 prev_state,
+ * string next_comm, int32 next_tid, int32 next_prio
+ */
+ {
Integer prevTid = ((Long) content.getField(LttngStrings.PREV_TID).getValue()).intValue();
- Long prevState = (Long) content.getField(LttngStrings.PREV_STATE).getValue();
+ //Long prevState = (Long) content.getField(LttngStrings.PREV_STATE).getValue();
String nextProcessName = (String) content.getField(LttngStrings.NEXT_COMM).getValue();
Integer nextTid = ((Long) content.getField(LttngStrings.NEXT_TID).getValue()).intValue();
- /* Update the name of the process going out (if needed) */
- quark = ss.getQuarkRelativeAndAdd(currentThreadNode, Attributes.EXEC_NAME);
- value = TmfStateValue.newValueString(prevProcessName);
- ss.updateOngoingState(value, quark);
-
/* Update the currentThreadNodes pointer */
- Integer newCurrentThreadNode = ss.getQuarkAbsoluteAndAdd(Attributes.THREADS, nextTid.toString());
+ Integer newCurrentThreadNode = ss.getQuarkRelativeAndAdd(threadsNode, nextTid.toString());
currentThreadNodes.set(eventCpu, newCurrentThreadNode);
+ /*
+ * Set the status of the process that got scheduled out, but
+ * only in the case where that process is currently active.
+ */
+ Integer formerThreadNode = ss.getQuarkRelativeAndAdd(threadsNode, prevTid.toString());
+ quark = ss.getQuarkRelativeAndAdd(formerThreadNode, Attributes.EXEC_NAME);
+ value = ss.queryOngoingState(quark);
+ if (!value.isNull()) {
+ quark = ss.getQuarkRelativeAndAdd(formerThreadNode, Attributes.STATUS);
+ value = TmfStateValue.newValueInt(Attributes.STATUS_WAIT);
+ ss.modifyAttribute(ts, value, quark);
+ }
+
/* Set the status of the new scheduled process */
- quark = ss.getQuarkRelativeAndAdd(newCurrentThreadNode, Attributes.STATUS);
- value = TmfStateValue.newValueInt(Attributes.STATUS_RUN);
- ss.modifyAttribute(ts, value, quark);
+ setProcessToRunning(ts, newCurrentThreadNode);
/* Set the exec name of the new process */
quark = ss.getQuarkRelativeAndAdd(newCurrentThreadNode, Attributes.EXEC_NAME);
value = TmfStateValue.newValueString(nextProcessName);
ss.modifyAttribute(ts, value, quark);
- /* Set the status of the process that got scheduled out */
- quark = ss.getQuarkAbsoluteAndAdd(Attributes.THREADS, prevTid.toString(), Attributes.STATUS);
- value = TmfStateValue.newValueInt(prevState.intValue());
- ss.modifyAttribute(ts, value, quark);
+ /*
+ * Check if we need to set the syscall state and the PPID of
+ * the new process (in case we haven't seen this process before)
+ */
+ quark = ss.getQuarkRelativeAndAdd(newCurrentThreadNode, Attributes.SYSTEM_CALL);
+ if (quark == ss.getNbAttributes()) { /* Did we just add this attribute? */
+ value = TmfStateValue.nullValue();
+ ss.modifyAttribute(ts, value, quark);
+ }
+ quark = ss.getQuarkRelativeAndAdd(newCurrentThreadNode, Attributes.PPID);
+ if (quark == ss.getNbAttributes()) {
+ value = TmfStateValue.nullValue();
+ ss.modifyAttribute(ts, value, quark);
+ }
/* Set the current scheduled process on the relevant CPU */
quark = ss.getQuarkRelativeAndAdd(currentCPUNode, Attributes.CURRENT_THREAD);
value = TmfStateValue.newValueInt(nextTid);
ss.modifyAttribute(ts, value, quark);
+\r
+ /* Set the status of the CPU itself */\r
+ quark = ss.getQuarkRelativeAndAdd(currentCPUNode, Attributes.STATUS);\r
+ if (nextTid > 0) {\r
+ value = TmfStateValue.newValueInt(Attributes.CPU_STATUS_BUSY);\r
+ } else {\r
+ value = TmfStateValue.newValueInt(Attributes.CPU_STATUS_IDLE);\r
+ }\r
+ ss.modifyAttribute(ts, value, quark);\r
+ }
break;
case 8: // "sched_process_fork":
- /*
- * Fields: string parent_comm, int32 parent_tid, string
- * child_comm, int32 child_tid
- */
-
+ /* Fields: string parent_comm, int32 parent_tid,
+ * string child_comm, int32 child_tid */
+ {
// String parentProcessName = (String)
// event.getFieldValue("parent_comm");
String childProcessName;
Integer parentTid = ((Long) content.getField(LttngStrings.PARENT_TID).getValue()).intValue();
Integer childTid = ((Long) content.getField(LttngStrings.CHILD_TID).getValue()).intValue();
- tidNode = ss.getQuarkAbsoluteAndAdd(Attributes.THREADS, childTid.toString());
+ tidNode = ss.getQuarkRelativeAndAdd(threadsNode, childTid.toString());
- /*
- * Add the new process with its known TID, PPID, and initial
- * Exec_name
- */
+ /* Assign the PPID to the new process */
quark = ss.getQuarkRelativeAndAdd(tidNode, Attributes.PPID);
value = TmfStateValue.newValueInt(parentTid);
ss.modifyAttribute(ts, value, quark);
quark = ss.getQuarkRelativeAndAdd(tidNode, Attributes.EXEC_NAME);
value = TmfStateValue.newValueString(childProcessName);
ss.modifyAttribute(ts, value, quark);
+
+ /* Set the new process' status */
+ quark = ss.getQuarkRelativeAndAdd(tidNode, Attributes.STATUS);
+ value = TmfStateValue.newValueInt(Attributes.STATUS_WAIT);
+ ss.modifyAttribute(ts, value, quark);
+
+ /* Set the process' syscall state */
+ quark = ss.getQuarkRelativeAndAdd(tidNode, Attributes.SYSTEM_CALL);
+ value = TmfStateValue.nullValue();
+ ss.modifyAttribute(ts, value, quark);
+ }
break;
case 9: // "sched_process_exit":
- /* Fields: string comm, int32 tid, int32 prio */
+ /* Fields: string comm, int32 tid, int32 prio */
+ {
String processName = (String) content.getField(LttngStrings.COMM).getValue();
Integer tid = ((Long) content.getField(LttngStrings.TID).getValue()).intValue();
/* Update the process' name, if we don't have it */
- quark = ss.getQuarkAbsoluteAndAdd(Attributes.THREADS, tid.toString(), Attributes.EXEC_NAME);
+ quark = ss.getQuarkRelativeAndAdd(threadsNode, tid.toString(), Attributes.EXEC_NAME);
value = TmfStateValue.newValueString(processName);
ss.updateOngoingState(value, quark);
* Remove the process and all its sub-attributes from the
* current state
*/
- quark = ss.getQuarkAbsoluteAndAdd(Attributes.THREADS, tid.toString());
+ quark = ss.getQuarkRelativeAndAdd(threadsNode, tid.toString());
ss.removeAttribute(ts, quark);
+ }
break;
case 10: // "sched_process_free":
- /* Fields: string comm, int32 tid, int32 prio */
+ /* Fields: string comm, int32 tid, int32 prio */
break;
// FIXME In CTF it's as "syscall_exec". Will have to be adapted.
// break;
default:
- /* Other event types not covered by the main switch */
-
+ /* Other event types not covered by the main switch */
+ {
if (eventName.startsWith(LttngStrings.SYSCALL_PREFIX)
|| eventName.startsWith(LttngStrings.COMPAT_SYSCALL_PREFIX)) {
/*
* syscall names are listed into the event type
*/
- /*
- * Push the syscall name on the Exec_mode_stack of the
- * relevant PID
- */
- quark = ss.getQuarkRelativeAndAdd(currentThreadNode, Attributes.EXEC_MODE_STACK);
+ /* Assign the new system call to the process */
+ quark = ss.getQuarkRelativeAndAdd(currentThreadNode, Attributes.SYSTEM_CALL);
value = TmfStateValue.newValueString(eventName);
- ss.pushAttribute(ts, value, quark);
- }
+ ss.modifyAttribute(ts, value, quark);
+ /* Put the process in system call mode */
+ quark = ss.getQuarkRelativeAndAdd(currentThreadNode, Attributes.STATUS);
+ value = TmfStateValue.newValueInt(Attributes.STATUS_RUN_SYSCALL);
+ ss.modifyAttribute(ts, value, quark);
+ }
+ }
break;
- } // End of switch
+ } // End of big switch
/*
* Statistics
*/
sve.printStackTrace();
}
+ }
+ private void setupCommonLocations() {
+ cpusNode = ss.getQuarkAbsoluteAndAdd(Attributes.CPUS);
+ threadsNode = ss.getQuarkAbsoluteAndAdd(Attributes.THREADS);
+ irqsNode = ss.getQuarkAbsoluteAndAdd(Attributes.RESOURCES, Attributes.IRQS);
+ softIrqsNode = ss.getQuarkAbsoluteAndAdd(Attributes.RESOURCES, Attributes.SOFT_IRQS);
}
private static HashMap<String, Integer> fillEventNames() {
Integer ret = knownEventNames.get(eventName);
return (ret != null) ? ret : -1;
}
+
+ /**
+ * When we want to set a process back to a "running" state, first check
+ * its current System_call attribute. If there is a system call active, we
+ * put the process back in the syscall state. If not, we put it back in
+ * user mode state.
+ */
+ private void setProcessToRunning(long ts, int currentThreadNode)
+ throws AttributeNotFoundException, TimeRangeException,
+ StateValueTypeException {
+ int quark;
+ ITmfStateValue value;
+
+ quark = ss.getQuarkRelativeAndAdd(currentThreadNode, Attributes.SYSTEM_CALL);
+ if (ss.queryOngoingState(quark).isNull()) {
+ /* We were in user mode before the interruption */
+ value = TmfStateValue.newValueInt(Attributes.STATUS_RUN_USERMODE);
+ } else {
+ /* We were previously in kernel mode */
+ value = TmfStateValue.newValueInt(Attributes.STATUS_RUN_SYSCALL);
+ }
+ quark = ss.getQuarkRelativeAndAdd(currentThreadNode, Attributes.STATUS);
+ ss.modifyAttribute(ts, value, quark);
+ }
+\r
+ /**\r
+ * Similar logic as above, but to set the CPU's status when it's coming out\r
+ * of an interruption.\r
+ * @throws AttributeNotFoundException \r
+ * @throws StateValueTypeException \r
+ * @throws TimeRangeException \r
+ */\r
+ private void cpuExitInterrupt(long ts, int currentCpuNode)\r
+ throws StateValueTypeException, AttributeNotFoundException,\r
+ TimeRangeException {\r
+ int quark;\r
+ ITmfStateValue value;\r
+\r
+ quark = ss.getQuarkRelativeAndAdd(currentCpuNode, Attributes.CURRENT_THREAD);\r
+ if (ss.queryOngoingState(quark).unboxInt() > 0) {\r
+ /* There was a process on the CPU */\r
+ value = TmfStateValue.newValueInt(Attributes.CPU_STATUS_BUSY);\r
+ } else {\r
+ /* There was no real process scheduled, CPU was idle */\r
+ value = TmfStateValue.newValueInt(Attributes.CPU_STATUS_IDLE);\r
+ }\r
+ quark = ss.getQuarkRelativeAndAdd(currentCpuNode, Attributes.STATUS);\r
+ ss.modifyAttribute(ts, value, quark);\r
+ }\r
}
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