frysk.ftrace
Class FtraceController

java.lang.Object
  frysk.ftrace.FtraceController

All Implemented Interfaces:

Ftrace.Controller, Ftrace.StackTracedSymbolsProvider, Ftrace.TracedSignalProvider, Ftrace.TracedSyscallProvider

public class FtraceController
extends Object
implements Ftrace.Controller, Ftrace.StackTracedSymbolsProvider, Ftrace.TracedSyscallProvider, Ftrace.TracedSignalProvider

Nested Class Summary

(package private) static interface

FtraceController.RuleHandler

Field Summary

private List	addrRules
private static Log	fine
private List	sigRules
private boolean	stackTraceEverything
private List	symRules
private List	sysRules
private HashSet	tracePointStackTraceSet
private static Log	warning

Constructor Summary

FtraceController()

Method Summary

private void	applyAddrRules(Task task, ObjectFile objf, long bias, List rules, Ftrace.Driver driver)
private void	applySymbolRules(Task task, ObjectFile objf, List tracePoints, List rules, FtraceController.RuleHandler handler)
Map	computeSignalWorkingSet(Task task) Answers Map<String, Boolean>, where the boolean value is whether to stack trace on given signal.
Map	computeSyscallWorkingSet(Task task) Answers Map<Syscall, Boolean>, where the boolean value is whether to stack trace on given syscall.
private Map	computeWorkingSet(Task task, String what, List rules, ArrayList candidates)
void	fileMapped(Task task, ObjectFile objf, DwflModule module, Ftrace.Driver driver) New library FILE was mapped in task TASK.
void	fileUnmapped(Task task, ObjectFile objf, DwflModule module, Ftrace.Driver driver) New library FILE was unmapped from task TASK.
void	gotAddrRules(List rules)
void	gotSigRules(List rules)
void	gotSymRules(List rules)
void	gotSysRules(List rules)
private boolean	isInterpOf(ObjectFile objf, String exe)
boolean	shouldStackTraceOnTracePoint(Object tracePoint)
void	stackTraceEverything()
private List	traceablesForModule(DwflModule module)

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Field Detail

warning

private static final Log warning

fine

private static final Log fine

symRules

private final List symRules

addrRules

private final List addrRules

sysRules

private final List sysRules

sigRules

private final List sigRules

tracePointStackTraceSet

private HashSet tracePointStackTraceSet

stackTraceEverything

private boolean stackTraceEverything

Constructor Detail

FtraceController

public FtraceController()

Method Detail

stackTraceEverything

public void stackTraceEverything()

shouldStackTraceOnTracePoint

public boolean shouldStackTraceOnTracePoint(Object tracePoint)

Specified by:

shouldStackTraceOnTracePoint in interface Ftrace.StackTracedSymbolsProvider

Parameters:

tracePoint - is either DwflSymbol or PLTEntry.

gotSymRules

public void gotSymRules(List rules)

gotAddrRules

public void gotAddrRules(List rules)

gotSysRules

public void gotSysRules(List rules)

gotSigRules

public void gotSigRules(List rules)

computeWorkingSet

private Map computeWorkingSet(Task task,
                              String what,
                              List rules,
                              ArrayList candidates)

computeSyscallWorkingSet

public Map computeSyscallWorkingSet(Task task)

Description copied from interface: Ftrace.TracedSyscallProvider

Answers Map<Syscall, Boolean>, where the boolean value is whether to stack trace on given syscall.

Specified by:

computeSyscallWorkingSet in interface Ftrace.TracedSyscallProvider

computeSignalWorkingSet

public Map computeSignalWorkingSet(Task task)

Description copied from interface: Ftrace.TracedSignalProvider

Answers Map<String, Boolean>, where the boolean value is whether to stack trace on given signal.

Specified by:

computeSignalWorkingSet in interface Ftrace.TracedSignalProvider

isInterpOf

private boolean isInterpOf(ObjectFile objf,
                           String exe)

applySymbolRules

private void applySymbolRules(Task task,
                              ObjectFile objf,
                              List tracePoints,
                              List rules,
                              FtraceController.RuleHandler handler)
                       throws ElfException

Throws:

ElfException

applyAddrRules

private void applyAddrRules(Task task,
                            ObjectFile objf,
                            long bias,
                            List rules,
                            Ftrace.Driver driver)

traceablesForModule

private List traceablesForModule(DwflModule module)

fileMapped

public void fileMapped(Task task,
                       ObjectFile objf,
                       DwflModule module,
                       Ftrace.Driver driver)

Description copied from interface: Ftrace.Controller

New library FILE was mapped in task TASK. Use DRIVER to tell ltrace what to do.

Specified by:

fileMapped in interface Ftrace.Controller

fileUnmapped

public void fileUnmapped(Task task,
                         ObjectFile objf,
                         DwflModule module,
                         Ftrace.Driver driver)

Description copied from interface: Ftrace.Controller

New library FILE was unmapped from task TASK. Use DRIVER to tell ltrace what to do.

Specified by:

fileUnmapped in interface Ftrace.Controller