Examples with ReloadableType org.springsource.loaded.ReloadableType used on opensource projects

Example 71 with ReloadableType

use of org.springsource.loaded.ReloadableType in project spring-loaded by spring-projects.

the class MethodInvokerRewriterTests method invokevirtualNonCatchers3.

/**
	 * Similar to previous test but now new method is in the middle of the hierarchy (and in the top, but the middle one
	 * should be answering the request)
	 */
@Test
public void invokevirtualNonCatchers3() throws Exception {
    String top = "virtual.FourTopC";
    String mid = "virtual.FourMidC";
    String bot = "virtual.FourBotC";
    TypeRegistry typeRegistry = getTypeRegistry(top + "," + bot);
    ReloadableType topR = typeRegistry.addType(top, loadBytesForClass(top));
    ReloadableType midR = typeRegistry.addType(mid, loadBytesForClass(mid));
    ReloadableType botR = typeRegistry.addType(bot, loadBytesForClass(bot));
    result = runUnguarded(botR.getClazz(), "run");
    assertEquals(42, result.returnValue);
    topR.loadNewVersion(retrieveRename(top, top + "2"));
    midR.loadNewVersion(retrieveRename(mid, mid + "2", top + "2:" + top));
    botR.loadNewVersion(retrieveRename(bot, bot + "2", mid + "2:" + mid));
    // now 'run()' should be invoking super.bar() where bar() is a new method 
    // introduced into FourTop
    result = runUnguarded(botR.getClazz(), "run");
    assertEquals(99, result.returnValue);
}

Example 72 with ReloadableType

use of org.springsource.loaded.ReloadableType in project spring-loaded by spring-projects.

the class MethodInvokerRewriterTests method rewriteInvokeInterface5_paramsChanged.

/**
	 * A method is changed on an interface - parameter type change.
	 */
@Test
public void rewriteInvokeInterface5_paramsChanged() throws Exception {
    TypeRegistry typeRegistry = getTypeRegistry("tgt.SimpleIClass,tgt.SimpleI");
    ReloadableType intface = typeRegistry.addType("tgt.SimpleI", loadBytesForClass("tgt.SimpleI"));
    ReloadableType impl = typeRegistry.addType("tgt.SimpleIClass", loadBytesForClass("tgt.SimpleIClass"));
    byte[] callerbytes = loadBytesForClass("tgt.StaticICaller");
    byte[] rewrittenBytes = MethodInvokerRewriter.rewrite(typeRegistry, callerbytes);
    Class<?> callerClazz = loadit("tgt.StaticICaller", rewrittenBytes);
    Result result = runUnguarded(callerClazz, "run");
    assertEquals(123, result.returnValue);
    // new interface version has method removed
    intface.loadNewVersion("2", retrieveRename("tgt.SimpleI", "tgt.SimpleI005"));
    impl.loadNewVersion("2", retrieveRename("tgt.SimpleIClass", "tgt.SimpleIClass005", "tgt.SimpleI005:tgt.SimpleI"));
    callerbytes = loadBytesForClass("tgt.StaticICaller005");
    callerbytes = ClassRenamer.rename("tgt.StaticICaller005", callerbytes, "tgt.SimpleI005:tgt.SimpleI", "tgt.SimpleIClass005:tgt.SimpleIClass", "tgt.SimpleIClass005:tgt.SimpleIClass");
    rewrittenBytes = MethodInvokerRewriter.rewrite(typeRegistry, callerbytes);
    callerClazz = loadit("tgt.StaticICaller005", rewrittenBytes);
    result = runUnguarded(callerClazz, "run");
    assertEquals(72, result.returnValue);
}

Example 73 with ReloadableType

use of org.springsource.loaded.ReloadableType in project spring-loaded by spring-projects.

the class MethodInvokerRewriterTests method rewriteInvokeStatic.

/**
	 * Rewrite of a simple INVOKESTATIC call.
	 */
@Test
public void rewriteInvokeStatic() throws Exception {
    TypeRegistry typeRegistry = getTypeRegistry("tgt.SimpleClass");
    ReloadableType r = typeRegistry.addType("tgt.SimpleClass", loadBytesForClass("tgt.SimpleClass"));
    byte[] callerbytes = loadBytesForClass("tgt.StaticCaller");
    // @formatter:off
    checkMethod(callerbytes, "run", " L0\n" + "    LDC 123\n" + "    INVOKESTATIC tgt/SimpleClass.toInt(Ljava/lang/String;)I\n" + "    IRETURN\n" + " L1\n");
    // @formatter:on
    byte[] rewrittenBytes = MethodInvokerRewriter.rewrite(typeRegistry, callerbytes);
    // @formatter:off
    checkMethod(rewrittenBytes, "run", " L0\n" + "    LDC 123\n" + "    LDC " + r.getId() + "\n" + "    LDC toInt(Ljava/lang/String;)I\n" + "    INVOKESTATIC org/springsource/loaded/TypeRegistry.istcheck(ILjava/lang/String;)Ljava/lang/Object;\n" + "    DUP\n" + "    IFNULL L1\n" + "    CHECKCAST tgt/SimpleClass__I\n" + "    ASTORE 1\n" + // it would remove from here:
    "    LDC 1\n" + // load 1
    "    ANEWARRAY java/lang/Object\n" + // new array of size 1
    "    DUP_X1\n" + // put it under the argument (it'll be under and on top)
    "    SWAP\n" + // put it under and under, arg on top
    "    LDC 0\n" + // load 0
    "    SWAP\n" + // swap 
    "    AASTORE\n" + // to here
    "    ALOAD 1\n" + // load the target
    "    SWAP\n" + // put the target at the bottom
    "    ACONST_NULL\n" + // load the instance (static call so null)
    "    LDC toInt(Ljava/lang/String;)I\n" + // load the name+descriptor
    "    INVOKEINTERFACE tgt/SimpleClass__I.__execute([Ljava/lang/Object;Ljava/lang/Object;Ljava/lang/String;)Ljava/lang/Object;\n" + "    CHECKCAST java/lang/Integer\n" + "    INVOKEVIRTUAL java/lang/Integer.intValue()I\n" + "    GOTO L2\n" + " L1\n" + "    POP\n" + "    INVOKESTATIC tgt/SimpleClass.toInt(Ljava/lang/String;)I\n" + " L2\n" + "    IRETURN\n" + " L3\n");
    // @formatter:on
    Class<?> callerClazz = loadit("tgt.StaticCaller", rewrittenBytes);
    //		ClassPrinter.print(r.bytesLoaded);
    Result result = runUnguarded(callerClazz, "run");
    assertEquals(123, result.returnValue);
}

Example 74 with ReloadableType

use of org.springsource.loaded.ReloadableType in project spring-loaded by spring-projects.

the class MethodInvokerRewriterTests method superCallsDynamicDispatcher.

/**
	 * This is similar to the first case except the hierarchy is split such that a middle type exists which does not
	 * initially implement the methods, they are added in a reload. This variant of the testcase is checking dispatch
	 * through the dynamic dispatch __execute method will work.
	 */
@Test
public void superCallsDynamicDispatcher() throws Exception {
    TypeRegistry tr = getTypeRegistry("invokespecial..*");
    loadType(tr, "invokespecial.Top");
    ReloadableType rt = loadType(tr, "invokespecial.Able2");
    ReloadableType st = loadType(tr, "invokespecial.Simple2");
    rt.loadNewVersion("002", this.retrieveRename("invokespecial.Able2", "invokespecial.Able2002"));
    Object object = st.getClazz().newInstance();
    Method method = null;
    String string = null;
    //		ClassPrinter.print(rt.bytesLoaded);
    method = st.getClazz().getMethod("withParamSuperCaller");
    string = (String) method.invoke(object);
    assertEquals("2323", string);
    method = st.getClazz().getMethod("withDoubleSlotParamSuperCaller");
    string = (String) method.invoke(object);
    assertEquals("3030", string);
    // this call is checking the private field access in the reloaded method has been
    // changed to use the accessors into the type that can access the field from outside
    method = st.getClazz().getMethod("withParamSuperCallerPrivateVariable");
    string = (String) method.invoke(object);
    assertEquals("44", string);
}

Example 75 with ReloadableType

use of org.springsource.loaded.ReloadableType in project spring-loaded by spring-projects.

the class MethodInvokerRewriterTests method superCallsRemovingMethods.

/**
	 * This is similar to the first case except the hierarchy is split such that a middle type exists where the methods
	 * initially exist but then they are removed in a reload. We should end up at the top level methods.
	 */
@Test
public void superCallsRemovingMethods() throws Exception {
    TypeRegistry tr = getTypeRegistry("invokespecial..*");
    ReloadableType a = loadType(tr, "invokespecial.A");
    ReloadableType b = loadType(tr, "invokespecial.B");
    ReloadableType c = loadType(tr, "invokespecial.C");
    Object object = c.getClazz().newInstance();
    Method method = null;
    String string = null;
    // class B implements it right now
    method = c.getClazz().getMethod("run1");
    string = (String) method.invoke(object);
    assertEquals("66", string);
    method = c.getClazz().getMethod("run2");
    string = (String) method.invoke(object);
    assertEquals("66falseabc", string);
    // Load new version of B where the methods are no longer there...
    b.loadNewVersion("002", retrieveRename("invokespecial.B", "invokespecial.B002"));
    // these calls should drop through to the super class A
    method = c.getClazz().getMethod("run1");
    string = (String) method.invoke(object);
    assertEquals("65", string);
    method = c.getClazz().getMethod("run2");
    string = (String) method.invoke(object);
    assertEquals("65falseabc", string);
    // Load new version of A where they aren't there either - how do we fail?
    a.loadNewVersion("002", retrieveRename("invokespecial.A", "invokespecial.A002"));
    // these calls should drop through to the super class A
    method = c.getClazz().getMethod("run1");
    try {
        string = (String) method.invoke(object);
        fail();
    } catch (InvocationTargetException ite) {
        assertEquals("java.lang.NoSuchMethodError", ite.getCause().getClass().getName());
        assertEquals("invokespecial.A.getInt()I", ite.getCause().getMessage());
    }
}