/** * @return whether or not this VM has an instrumentation installed that * permits redefinition of classes. This assumes that all the arguments * will be modifiable classes according to * {@link java.lang.instrument.Instrumentation#isModifiableClass}, and * only checks whether or not an instrumentation is available and * if retransformation is possible. */ public static boolean canRedefineClasses(Log log) { if (_canRedefine == null) { try { Instrumentation inst = InstrumentationFactory.getInstrumentation(log); if (inst == null) { _canRedefine = Boolean.FALSE; } else if (JavaVersions.VERSION == 5) { // if instrumentation is non-null and we're using Java 5, // isRetransformClassesSupported isn't available, // so we use the more basic class redefinition instead. _canRedefine = Boolean.TRUE; } else { _canRedefine = (Boolean) Instrumentation.class.getMethod( "isRetransformClassesSupported").invoke(inst); } } catch (Exception e) { _canRedefine = Boolean.FALSE; } } return _canRedefine.booleanValue(); } }
/** * @return whether or not this VM has an instrumentation installed that * permits redefinition of classes. This assumes that all the arguments * will be modifiable classes according to * {@link java.lang.instrument.Instrumentation#isModifiableClass}, and * only checks whether or not an instrumentation is available and * if retransformation is possible. */ public static boolean canRedefineClasses(Log log) { if (_canRedefine == null) { try { Instrumentation inst = InstrumentationFactory.getInstrumentation(log); if (inst == null) { _canRedefine = Boolean.FALSE; } else if (JavaVersions.VERSION == 5) { // if instrumentation is non-null and we're using Java 5, // isRetransformClassesSupported isn't available, // so we use the more basic class redefinition instead. _canRedefine = Boolean.TRUE; } else { _canRedefine = (Boolean) Instrumentation.class.getMethod( "isRetransformClassesSupported").invoke(inst); } } catch (Exception e) { _canRedefine = Boolean.FALSE; } } return _canRedefine.booleanValue(); } }
/** * @return whether or not this VM has an instrumentation installed that * permits redefinition of classes. This assumes that all the arguments * will be modifiable classes according to * {@link java.lang.instrument.Instrumentation#isModifiableClass}, and * only checks whether or not an instrumentation is available and * if retransformation is possible. */ public static boolean canRedefineClasses(Log log) { if (_canRedefine == null) { try { Instrumentation inst = InstrumentationFactory.getInstrumentation(log); if (inst == null) { _canRedefine = Boolean.FALSE; } else if (JavaVersions.VERSION == 5) { // if instrumentation is non-null and we're using Java 5, // isRetransformClassesSupported isn't available, // so we use the more basic class redefinition instead. _canRedefine = Boolean.TRUE; } else { _canRedefine = (Boolean) Instrumentation.class.getMethod( "isRetransformClassesSupported").invoke(inst); } } catch (Exception e) { _canRedefine = Boolean.FALSE; } } return _canRedefine.booleanValue(); } }
try { Instrumentation inst = InstrumentationFactory .getInstrumentation(); if (inst == null) { _canRedefine = Boolean.FALSE;
try { Instrumentation inst = InstrumentationFactory .getInstrumentation(); if (inst == null) { _canRedefine = Boolean.FALSE;
/** * @return whether or not this VM has an instrumentation installed that * permits redefinition of classes. This assumes that all the arguments * will be modifiable classes according to * {@link java.lang.instrument.Instrumentation#isModifiableClass}, and * only checks whether or not an instrumentation is available and * if retransformation is possible. */ public static boolean canRedefineClasses(Log log) { if (_canRedefine == null) { try { Instrumentation inst = InstrumentationFactory.getInstrumentation(log); if (inst == null) { _canRedefine = Boolean.FALSE; } else if (JavaVersions.VERSION == 5) { // if instrumentation is non-null and we're using Java 5, // isRetransformClassesSupported isn't available, // so we use the more basic class redefinition instead. _canRedefine = Boolean.TRUE; } else { _canRedefine = (Boolean) Instrumentation.class.getMethod( "isRetransformClassesSupported").invoke(inst); } } catch (Exception e) { _canRedefine = Boolean.FALSE; } } return _canRedefine.booleanValue(); } }
/** * @param log * @return True if the agent is loaded successfully */ public static synchronized boolean loadDynamicAgent(Log log) { if (loadAttempted == false && disableDynamicAgent == false) { Instrumentation inst = InstrumentationFactory.getInstrumentation(log); if (inst != null) { premain("", inst); return true; } // If we successfully get the Instrumentation, we will call premain // where loadAttempted will be set to true. This case is the path // where we were unable to get Instrumentation so we need to set the // loadAttempted flag to true. We do this so we will only run // through this code one time. loadAttempted = true; } return false; }
try { Instrumentation inst = InstrumentationFactory .getInstrumentation(); if (inst == null) { _canRedefine = Boolean.FALSE;
/** * @return True if the agent is loaded successfully */ public static synchronized boolean loadDynamicAgent(Log log) { if (loadAttempted == false && disableDynamicAgent == false) { Instrumentation inst = InstrumentationFactory.getInstrumentation(log); if (inst != null) { premain("", inst); return true; } // If we successfully get the Instrumentation, we will call premain // where loadAttempted will be set to true. This case is the path // where we were unable to get Instrumentation so we need to set the // loadAttempted flag to true. We do this so we will only run // through this code one time. loadAttempted = true; } return false; }
/** * @return True if the agent is loaded successfully */ public static synchronized boolean loadDynamicAgent(Log log) { if (loadAttempted == false && disableDynamicAgent == false) { Instrumentation inst = InstrumentationFactory.getInstrumentation(log); if (inst != null) { premain("", inst); return true; } // If we successfully get the Instrumentation, we will call premain // where loadAttempted will be set to true. This case is the path // where we were unable to get Instrumentation so we need to set the // loadAttempted flag to true. We do this so we will only run // through this code one time. loadAttempted = true; } return false; }
/** * @param log * @return True if the agent is loaded successfully */ public static synchronized boolean loadDynamicAgent(Log log) { if (loadAttempted == false && disableDynamicAgent == false) { Instrumentation inst = InstrumentationFactory.getInstrumentation(log); if (inst != null) { premain("", inst); return true; } // If we successfully get the Instrumentation, we will call premain // where loadAttempted will be set to true. This case is the path // where we were unable to get Instrumentation so we need to set the // loadAttempted flag to true. We do this so we will only run // through this code one time. loadAttempted = true; } return false; }
ClassFileTransformer t = null; try { inst = InstrumentationFactory.getInstrumentation(log);
ClassFileTransformer t = null; try { inst = InstrumentationFactory.getInstrumentation(log);
ClassFileTransformer t = null; try { inst = InstrumentationFactory.getInstrumentation(log);
ClassFileTransformer t = null; try { inst = InstrumentationFactory.getInstrumentation(log);
ClassFileTransformer t = null; try { inst = InstrumentationFactory.getInstrumentation();
ClassFileTransformer t = null; try { inst = InstrumentationFactory.getInstrumentation();
ClassFileTransformer t = null; try { inst = InstrumentationFactory.getInstrumentation();