package org.eclipse.linuxtools.internal.lttng2.kernel.core.stateprovider;
+import java.util.ArrayList;
import java.util.HashMap;
-import java.util.Vector;
+import java.util.List;
import java.util.concurrent.BlockingQueue;
-import org.eclipse.linuxtools.lttng2.kernel.core.trace.Attributes;
-import org.eclipse.linuxtools.lttng2.kernel.core.trace.LttngStrings;
+import org.eclipse.linuxtools.internal.lttng2.kernel.core.Attributes;
+import org.eclipse.linuxtools.internal.lttng2.kernel.core.LttngStrings;
+import org.eclipse.linuxtools.internal.lttng2.kernel.core.StateValues;
import org.eclipse.linuxtools.tmf.core.ctfadaptor.CtfTmfEvent;
import org.eclipse.linuxtools.tmf.core.event.ITmfEventField;
import org.eclipse.linuxtools.tmf.core.exceptions.AttributeNotFoundException;
* We can keep handles to some Attribute Nodes so these don't need to be
* re-found (re-hashed Strings etc.) every new event
*/
- Vector<Integer> currentCPUNodes;
- Vector<Integer> currentThreadNodes;
+ List<Integer> currentCPUNodes;
+ List<Integer> currentThreadNodes;
/* 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;
- currentCPUNodes = new Vector<Integer>();
- currentThreadNodes = new Vector<Integer>();
+ currentCPUNodes = new ArrayList<Integer>();
+ currentThreadNodes = new ArrayList<Integer>();
knownEventNames = fillEventNames();
}
private void closeStateSystem() {
/* Close the History system, if there is one */
+ if (currentEvent == null) {
+ return;
+ }
try {
ss.closeHistory(currentEvent.getTimestamp().getValue());
} catch (TimeRangeException e) {
int quark;
ITmfStateValue value;
Integer eventCpu = event.getCPU();
- Integer currentCPUNode, currentThreadNode, tidNode;
+ Integer currentCPUNode, currentThreadNode;
/* Adjust the current nodes Vectors if we see a new CPU in an event */
if (eventCpu >= currentCPUNodes.size()) {
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(StateValues.PROCESS_STATUS_RUN_USERMODE);
+ ss.modifyAttribute(ts, value, quark);
+
+ /* Put the CPU's status back to user mode */
+ quark = ss.getQuarkRelativeAndAdd(currentCPUNode, Attributes.STATUS);
+ value = TmfStateValue.newValueInt(StateValues.CPU_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(StateValues.PROCESS_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(StateValues.CPU_STATUS_IRQ);\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 running or "idle" */\r
+ cpuExitInterrupt(ts, currentCPUNode, currentThreadNode);\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(StateValues.PROCESS_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(StateValues.CPU_STATUS_SOFTIRQ);\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, currentThreadNode);\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(StateValues.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
- */
-
+ /*
+ * 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 currentThreadNodes pointer */
+ Integer formerThreadNode = ss.getQuarkRelativeAndAdd(threadsNode, prevTid.toString());
Integer newCurrentThreadNode = ss.getQuarkRelativeAndAdd(threadsNode, nextTid.toString());
- initThreadNode(newCurrentThreadNode);
+
+ /* Update the currentThreadNodes pointer */
currentThreadNodes.set(eventCpu, newCurrentThreadNode);
- /* Set the status of the new scheduled process */
- quark = ss.getQuarkRelative(newCurrentThreadNode, Attributes.STATUS);
- value = TmfStateValue.newValueInt(Attributes.STATUS_RUN);
+ /* Set the status of the process that got scheduled out. */
+ quark = ss.getQuarkRelativeAndAdd(formerThreadNode, Attributes.STATUS);
+ value = TmfStateValue.newValueInt(StateValues.PROCESS_STATUS_WAIT);
ss.modifyAttribute(ts, value, quark);
+ /* Set the status of the new scheduled process */
+ setProcessToRunning(ts, newCurrentThreadNode);
+
/* Set the exec name of the new process */
- quark = ss.getQuarkRelative(newCurrentThreadNode, Attributes.EXEC_NAME);
+ 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.getQuarkRelativeAndAdd(threadsNode, 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 */
+ if (nextTid > 0) {
+ /* Check if the entering process is in kernel or user mode */
+ quark = ss.getQuarkRelativeAndAdd(newCurrentThreadNode, Attributes.SYSTEM_CALL);
+ if (ss.queryOngoingState(quark).isNull()) {
+ value = TmfStateValue.newValueInt(StateValues.CPU_STATUS_RUN_USERMODE);
+ } else {
+ value = TmfStateValue.newValueInt(StateValues.CPU_STATUS_RUN_SYSCALL);
+ }\r
+ } else {\r
+ value = TmfStateValue.newValueInt(StateValues.CPU_STATUS_IDLE);\r
+ }
+ quark = ss.getQuarkRelativeAndAdd(currentCPUNode, Attributes.STATUS);
+ 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
- */
-
- // String parentProcessName = (String)
- // event.getFieldValue("parent_comm");
- String childProcessName;
- childProcessName = (String) content.getField(LttngStrings.CHILD_COMM).getValue();
+ /* Fields: string parent_comm, int32 parent_tid,
+ * string child_comm, int32 child_tid */
+ {
+ // String parentProcessName = (String) event.getFieldValue("parent_comm");
+ String childProcessName = (String) content.getField(LttngStrings.CHILD_COMM).getValue();
// assert ( parentProcessName.equals(childProcessName) );
Integer parentTid = ((Long) content.getField(LttngStrings.PARENT_TID).getValue()).intValue();
Integer childTid = ((Long) content.getField(LttngStrings.CHILD_TID).getValue()).intValue();
- tidNode = ss.getQuarkRelativeAndAdd(threadsNode, childTid.toString());
- initThreadNode(tidNode);
+ Integer parentTidNode = ss.getQuarkRelativeAndAdd(threadsNode, parentTid.toString());
+ Integer childTidNode = ss.getQuarkRelativeAndAdd(threadsNode, childTid.toString());
- /*
- * Add the new process with its known TID, PPID, and initial
- * Exec_name
- */
- quark = ss.getQuarkRelative(tidNode, Attributes.PPID);
+ /* Assign the PPID to the new process */
+ quark = ss.getQuarkRelativeAndAdd(childTidNode, Attributes.PPID);
value = TmfStateValue.newValueInt(parentTid);
ss.modifyAttribute(ts, value, quark);
/* Set the new process' exec_name */
- quark = ss.getQuarkRelative(tidNode, Attributes.EXEC_NAME);
+ quark = ss.getQuarkRelativeAndAdd(childTidNode, Attributes.EXEC_NAME);
value = TmfStateValue.newValueString(childProcessName);
ss.modifyAttribute(ts, value, quark);
+
+ /* Set the new process' status */
+ quark = ss.getQuarkRelativeAndAdd(childTidNode, Attributes.STATUS);
+ value = TmfStateValue.newValueInt(StateValues.PROCESS_STATUS_WAIT);
+ ss.modifyAttribute(ts, value, quark);
+
+ /* Set the process' syscall name, to be the same as the parent's */
+ quark = ss.getQuarkRelativeAndAdd(parentTidNode, Attributes.SYSTEM_CALL);
+ value = ss.queryOngoingState(quark);
+ quark = ss.getQuarkRelativeAndAdd(childTidNode, Attributes.SYSTEM_CALL);
+ ss.modifyAttribute(ts, value, quark);
+ }
break;
case 9: // "sched_process_exit":
- /* 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.getQuarkRelativeAndAdd(threadsNode, tid.toString(), Attributes.EXEC_NAME);
- value = TmfStateValue.newValueString(processName);
- ss.updateOngoingState(value, quark);
+ /* Fields: string comm, int32 tid, int32 prio */
+ break;
+ case 10: // "sched_process_free":
+ /* Fields: string comm, int32 tid, int32 prio */
+ /*
+ * A sched_process_free will always happen after the sched_switch
+ * that will remove the process from the cpu for the last time. So
+ * this is when we should delete everything wrt to the process.
+ */
+ {
+ Integer tid = ((Long) content.getField(LttngStrings.TID).getValue()).intValue();
/*
* Remove the process and all its sub-attributes from the
* current state
*/
quark = ss.getQuarkRelativeAndAdd(threadsNode, tid.toString());
ss.removeAttribute(ts, quark);
- break;
-
- case 10: // "sched_process_free":
- /* 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(StateValues.PROCESS_STATUS_RUN_SYSCALL);
+ ss.modifyAttribute(ts, value, quark);
+
+ /* Put the CPU in system call (kernel) mode */
+ quark = ss.getQuarkRelativeAndAdd(currentCPUNode, Attributes.STATUS);
+ value = TmfStateValue.newValueInt(StateValues.CPU_STATUS_RUN_SYSCALL);
+ ss.modifyAttribute(ts, value, quark);
+ }
+ }
break;
- } // End of switch
+ } // End of big switch
/*
* Statistics
}
}
- /**
- * Ensure we always have some sub-attributes available for every "TID" node.
- */
- private void initThreadNode(int currentThreadNode) {
- ss.getQuarkRelativeAndAdd(currentThreadNode, Attributes.PPID);
- ss.getQuarkRelativeAndAdd(currentThreadNode, Attributes.EXEC_NAME);
- ss.getQuarkRelativeAndAdd(currentThreadNode, Attributes.EXEC_MODE_STACK);
- ss.getQuarkRelativeAndAdd(currentThreadNode, Attributes.STATUS);
- }
-
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(StateValues.PROCESS_STATUS_RUN_USERMODE);
+ } else {
+ /* We were previously in kernel mode */
+ value = TmfStateValue.newValueInt(StateValues.PROCESS_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, int currentThreadNode)\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 */
+ quark = ss.getQuarkRelative(currentThreadNode, Attributes.SYSTEM_CALL);
+ if (ss.queryOngoingState(quark).isNull()) {
+ /* That process was in user mode */
+ value = TmfStateValue.newValueInt(StateValues.CPU_STATUS_RUN_USERMODE);
+ } else {
+ /* That process was in a system call */
+ value = TmfStateValue.newValueInt(StateValues.CPU_STATUS_RUN_SYSCALL);
+ }
+ } else {\r
+ /* There was no real process scheduled, CPU was idle */\r
+ value = TmfStateValue.newValueInt(StateValues.CPU_STATUS_IDLE);\r
+ }\r
+ quark = ss.getQuarkRelativeAndAdd(currentCpuNode, Attributes.STATUS);\r
+ ss.modifyAttribute(ts, value, quark);\r
+ }\r
}
projects / deliverable / tracecompass.git / blobdiff