commit f086a9b19d5736d6411d364799203ce1094061a7 Author: FuckYou Date: Sat Oct 22 21:36:45 2016 +0400 Initial commit diff --git a/.idea/artifacts/libRefTools_jar.xml b/.idea/artifacts/libRefTools_jar.xml new file mode 100644 index 0000000..612151f --- /dev/null +++ b/.idea/artifacts/libRefTools_jar.xml @@ -0,0 +1,11 @@ + + + $PROJECT_DIR$/out/artifacts/libRefTools_jar + + + + + + + + \ No newline at end of file diff --git a/.idea/compiler.xml b/.idea/compiler.xml new file mode 100644 index 0000000..96cc43e --- /dev/null +++ b/.idea/compiler.xml @@ -0,0 +1,22 @@ + + + + + + + + + + + + + + + + + + + + + + \ No newline at end of file diff --git a/.idea/copyright/profiles_settings.xml b/.idea/copyright/profiles_settings.xml new file mode 100644 index 0000000..e7bedf3 --- /dev/null +++ b/.idea/copyright/profiles_settings.xml @@ -0,0 +1,3 @@ + + + \ No newline at end of file diff --git a/.idea/inspectionProfiles/Project_Default.xml b/.idea/inspectionProfiles/Project_Default.xml new file mode 100644 index 0000000..6807f98 --- /dev/null +++ b/.idea/inspectionProfiles/Project_Default.xml @@ -0,0 +1,23 @@ + + + + \ No newline at end of file diff --git a/.idea/inspectionProfiles/profiles_settings.xml b/.idea/inspectionProfiles/profiles_settings.xml new file mode 100644 index 0000000..3b31283 --- /dev/null +++ b/.idea/inspectionProfiles/profiles_settings.xml @@ -0,0 +1,7 @@ + + + + \ No newline at end of file diff --git a/.idea/libraries/asm_all_5_1.xml b/.idea/libraries/asm_all_5_1.xml new file mode 100644 index 0000000..d4f5f6a --- /dev/null +++ b/.idea/libraries/asm_all_5_1.xml @@ -0,0 +1,13 @@ + + + + + + + + + + + + + \ No newline at end of file diff --git a/.idea/misc.xml b/.idea/misc.xml new file mode 100644 index 0000000..9793229 --- /dev/null +++ b/.idea/misc.xml @@ -0,0 +1,19 @@ + + + + + + + + + + + + + + + + + + + \ No newline at end of file diff --git a/.idea/modules.xml b/.idea/modules.xml new file mode 100644 index 0000000..39e214d --- /dev/null +++ b/.idea/modules.xml @@ -0,0 +1,8 @@ + + + + + + + + \ No newline at end of file diff --git a/COPYING.txt b/COPYING.txt new file mode 100644 index 0000000..20d40b6 --- /dev/null +++ b/COPYING.txt @@ -0,0 +1,674 @@ + GNU GENERAL PUBLIC LICENSE + Version 3, 29 June 2007 + + Copyright (C) 2007 Free Software Foundation, Inc. + Everyone is permitted to copy and distribute verbatim copies + of this license document, but changing it is not allowed. + + Preamble + + The GNU General Public License is a free, copyleft license for +software and other kinds of works. + + The licenses for most software and other practical works are designed +to take away your freedom to share and change the works. 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Interpretation of Sections 15 and 16. + + If the disclaimer of warranty and limitation of liability provided +above cannot be given local legal effect according to their terms, +reviewing courts shall apply local law that most closely approximates +an absolute waiver of all civil liability in connection with the +Program, unless a warranty or assumption of liability accompanies a +copy of the Program in return for a fee. + + END OF TERMS AND CONDITIONS + + How to Apply These Terms to Your New Programs + + If you develop a new program, and you want it to be of the greatest +possible use to the public, the best way to achieve this is to make it +free software which everyone can redistribute and change under these terms. + + To do so, attach the following notices to the program. It is safest +to attach them to the start of each source file to most effectively +state the exclusion of warranty; and each file should have at least +the "copyright" line and a pointer to where the full notice is found. + + + Copyright (C) + + This program is free software: you can redistribute it and/or modify + it under the terms of the GNU General Public License as published by + the Free Software Foundation, either version 3 of the License, or + (at your option) any later version. + + This program is distributed in the hope that it will be useful, + but WITHOUT ANY WARRANTY; without even the implied warranty of + MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + GNU General Public License for more details. + + You should have received a copy of the GNU General Public License + along with this program. If not, see . + +Also add information on how to contact you by electronic and paper mail. + + If the program does terminal interaction, make it output a short +notice like this when it starts in an interactive mode: + + Copyright (C) + This program comes with ABSOLUTELY NO WARRANTY; for details type `show w'. + This is free software, and you are welcome to redistribute it + under certain conditions; type `show c' for details. + +The hypothetical commands `show w' and `show c' should show the appropriate +parts of the General Public License. Of course, your program's commands +might be different; for a GUI interface, you would use an "about box". + + You should also get your employer (if you work as a programmer) or school, +if any, to sign a "copyright disclaimer" for the program, if necessary. +For more information on this, and how to apply and follow the GNU GPL, see +. + + The GNU General Public License does not permit incorporating your program +into proprietary programs. If your program is a subroutine library, you +may consider it more useful to permit linking proprietary applications with +the library. If this is what you want to do, use the GNU Lesser General +Public License instead of this License. But first, please read +. \ No newline at end of file diff --git a/README.txt b/README.txt new file mode 100644 index 0000000..dc510d3 --- /dev/null +++ b/README.txt @@ -0,0 +1,20 @@ +This file is part of Async. + +libGTools is free software: you can redistribute it and/or modify +it under the terms of the GNU General Public License as published by +the Free Software Foundation, either version 3 of the License, or +(at your option) any later version. + +libGTools is distributed in the hope that it will be useful, +but WITHOUT ANY WARRANTY; without even the implied warranty of +MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the +GNU General Public License for more details. + +You should have received a copy of the GNU General Public License +along with libGTools. If not, see . + +For further questions regarding your rights to libGTools, please contact Gabriel Tofvesson either by email at +gabriel.tofvesson@gmail.com +or by mail at +Bo Bergmans gata 9, 115 50, Stockholm, Sweden +Contacting these addresses under false pretences and/or with malicious intent (for example sending more than two messages without response from the recipient) is not permissible. \ No newline at end of file diff --git a/libGTools.iml b/libGTools.iml new file mode 100644 index 0000000..e3b583e --- /dev/null +++ b/libGTools.iml @@ -0,0 +1,12 @@ + + + + + + + + + + + + \ No newline at end of file diff --git a/src/com/tofvesson/async/Async.java b/src/com/tofvesson/async/Async.java new file mode 100644 index 0000000..650137f --- /dev/null +++ b/src/com/tofvesson/async/Async.java @@ -0,0 +1,87 @@ +package com.tofvesson.async; + +import java.lang.reflect.Constructor; +import java.lang.reflect.Method; + +@SuppressWarnings({"WeakerAccess", "unused"}) +public class Async { + + Thread task; + volatile Object ret; // Assigned using native method + volatile boolean complete = false, failed = false; // Used by anonymous class, therefore not private + volatile Throwable t; + + /** + * Initiates an async task that invokes the defined method. If object is null, the method must be static. + * Note that this is optimized for larger tasks id est tasks that take more than 5 milliseconds to process (preferably a minimum of 10 ms). + * @param o Object to invoke method on. + * @param method Method to invoke. + * @param params Required parameters. + */ + public Async(final Object o, final Method method, final Object... params){ + method.setAccessible(true); + //Lambdas are compiled into more methods than anonymous class and don't decrease overhead + //noinspection Convert2Lambda + task = new Thread(new Runnable() { + @Override + public void run() { + synchronized (this) { try { ret = method.invoke(o, params); complete = true; } + catch (Throwable t1) { if(!failed) { failed = true; t=t1; } } } + } + }); + task.setDaemon(true); + task.start(); + } + + /** + * Create a new async task for instantiating an object. + * @param c Constructor to use when instantiating object. + * @param params Parameters to use when instantiaing object. + */ + public Async(final Constructor c, final Object... params){ + c.setAccessible(true); + //Lambdas are compiled into more methods than anonymous class and don't decrease overhead + //noinspection Convert2Lambda + task = new Thread(new Runnable() { + @Override + public void run() { + synchronized (this) { try { ret = c.newInstance(params); } catch (Throwable t1) { if(!failed) { failed = true; t=t1; } } } + } + }); + task.setDaemon(true); + task.start(); + } + + Async() {task = null;} // Only package-scoped because it should only be used when overriding standard construction + + /** + * Await completion of async task. Blocks thread if task isn't complete. + * @return Return value from async method call. Return is null if {@link #cancel()} is called before this method and async task wan't finished. + */ + public Object await(){ + //noinspection StatementWithEmptyBody + while(!failed && !complete); // Check using variables rather than checking if worker thread is alive since method calls are more computationally expensive + if(ret==null && t!=null) throw new RuntimeException(t); // Detect a unique error state, get error and throw in caller thread + //noinspection unchecked + return ret; // Don't bother resetting values since this object is only intended to be recycled after value is gotten + } + + /** + * Checks if async task is still running. + * @return True if it's still running. + */ + public boolean isAlive(){ return task.isAlive(); } + + /** + * Cancels async operation if it's still alive. + */ + public void cancel(){ + if(task.isAlive()){ + // Set values before interrupting to prevent InterruptedException from + // being propagated and thrown in the main thread + t=null; + failed = true; // Creates a unique and identifiable state + task.interrupt(); + } + } +} diff --git a/src/com/tofvesson/async/EcoAsync$1.java b/src/com/tofvesson/async/EcoAsync$1.java new file mode 100644 index 0000000..e9cbbb0 --- /dev/null +++ b/src/com/tofvesson/async/EcoAsync$1.java @@ -0,0 +1,38 @@ +package com.tofvesson.async; + +import java.lang.reflect.Method; + +/** + * Pre-written anonymous class. Follows all naming conventions of an anonymous class, acts like an anonymous class and handles data like an anonymous class. + * It just isn't an anonymous class technically speaking... + */ +class EcoAsync$1 implements Runnable{ + + private final EcoAsync this$0; + private final Object val$o; + private final Method val$method; + private final Object[] val$params; + + EcoAsync$1(EcoAsync this$0, Object val$o, Method val$method, Object[] val$params){ + this.this$0 = this$0; + this.val$o = val$o; + this.val$method = val$method; + this.val$params = val$params; + } + + @Override + public void run() { + synchronized (this) { + try { + this$0.ret = val$method.invoke(val$o, val$params); + } catch (Throwable t1) { + if(!this$0.failed) + { + this$0.failed = true; this$0.t=t1; + } + } finally { + this$0.newThread(val$o, val$method, val$params); + } + } + } +} diff --git a/src/com/tofvesson/async/EcoAsync.java b/src/com/tofvesson/async/EcoAsync.java new file mode 100644 index 0000000..97c354e --- /dev/null +++ b/src/com/tofvesson/async/EcoAsync.java @@ -0,0 +1,127 @@ +package com.tofvesson.async; + + +import java.lang.reflect.Constructor; +import java.lang.reflect.Field; +import java.lang.reflect.InvocationTargetException; +import java.lang.reflect.Method; + +public class EcoAsync extends Async { + + private static final Field threadTarget, runnableObjToCall, runnableMethod, runnableParams; + private Thread previousThread; + + static{ + Field f4 = null, f3 = null, f2 = null, f1 = null; + try{ + f1 = Thread.class.getDeclaredField("target"); + f1.setAccessible(true); + f2 = EcoAsync$1.class.getDeclaredField("val$o"); + f2.setAccessible(true); + f3 = EcoAsync$1.class.getDeclaredField("val$method"); + f3.setAccessible(true); + f4 = EcoAsync$1.class.getDeclaredField("val$params"); + f4.setAccessible(true); + }catch(Exception ignored){} + threadTarget = f1; + runnableObjToCall = f2; + runnableMethod = f3; + runnableParams = f4; + } + + /** + * Initiates an economic version of async task that invokes the defined method. If object is null, the method must be static. + * Note that though this is optimized for larger tasks id est tasks that take more than 5 milliseconds to process, this class was designed with re-usability in mind and, as such, doesn't have to be re-instantiated + * to call the same method asynchronously. + * All-in-all, this means that this class is meant to be instantiated once but invoked multiple times. + * This memory efficiency has the minor draw-back of executing a couple more (2-3) lines of code to allow for re-usability. + * + * @param o Object to invoke method on. + * @param method Method to invoke. + * @param params Required parameters. + * @param runOnConstruction If true, object will run async task after construction. + */ + public EcoAsync(boolean runOnConstruction, Object o, Method method, Object... params) { + super(); + method.setAccessible(true); + // Don't call super since we are constructing a custom version + newThread(o, method, params); + if(runOnConstruction) try{ task.start(); }catch(Exception ignored){} + } + + /** + * Initiates an economic version of async task that constructs an object using the supplied constructor. + * Note that though this is optimized for larger tasks id est tasks that take more than 5 milliseconds to process, this class was designed with + * re-usability in mind and, as such, doesn't have to be re-instantiated to call the same constructor asynchronously. + * All-in-all, this means that this class is meant to be instantiated once but invoked multiple times. + * This memory efficiency has the minor draw-back of executing a couple more (2-3) lines of code to allow for re-usability. + * + * @param runOnConstruction Whether or not to construct object during construction time. + * @param c Constructor to use when constructing. + * @param params Parameter to use when constructing. + */ + public EcoAsync(boolean runOnConstruction, Constructor c, Object... params){ + super(); + c.setAccessible(true); + try { + Method m = EcoAsync.class.getMethod("constructObject", Constructor.class, Object[].class); + newThread(null, m, c, params); + } catch (NoSuchMethodException e) { } + if(runOnConstruction) try{ task.start(); }catch(Exception ignored){} + } + + @Override + public Object await() { + //noinspection StatementWithEmptyBody + while(!failed && !complete); + if(ret==null && t!=null){ + Throwable t = super.t; // Added for re-usability + super.t = null; // Added for re-usability + throw new RuntimeException(t); + } + return ret; + } + + @Override + public boolean isAlive() { + return !super.failed && !complete && previousThread!=null; // Due to the overridden operation, we need another way of checking if worker is alive. + } + + @Override + public void cancel() { + previousThread = task;// Store a reference to the previous thread + super.cancel(); + while(previousThread.isAlive()) ; + complete = false; + failed = false; + ret = null; + } + + /** + * Used to start/restart execution of supplied method. Cancels previous operation it it's still alive. + */ + public void start(){ + if(isAlive()) cancel(); + // Dig parameters out from memory rather than wasting space with our own copy + try { + EcoAsync$1 t_run = (EcoAsync$1) threadTarget.get(task); + newThread(runnableObjToCall.get(t_run), + (Method) runnableMethod.get(t_run), + (Object[]) runnableParams.get(t_run)); + task.start(); + } catch (IllegalAccessException ignored) { } + } + + void newThread(Object o, Method method, Object... params){ + previousThread = null; + try { + task = new Thread(new EcoAsync$1(this, o, method, params), "Worker_"+method.getDeclaringClass().getName()+"_"+method.getName()); + task.setDaemon(true); + } catch (Exception ignored) { } + } + + private static Object constructObject(Constructor c, Object[] params) + throws IllegalAccessException, InvocationTargetException, InstantiationException { + return c.newInstance(params); + } +} diff --git a/src/com/tofvesson/async/Test.java b/src/com/tofvesson/async/Test.java new file mode 100644 index 0000000..87d2524 --- /dev/null +++ b/src/com/tofvesson/async/Test.java @@ -0,0 +1,69 @@ +package com.tofvesson.async; + +import jdk.internal.org.objectweb.asm.ClassWriter; +import jdk.internal.org.objectweb.asm.MethodVisitor; +import static org.objectweb.asm.Opcodes.*; + +public class Test { + + public Test(){} + + public static void main(String[] args) throws Exception { + + + + + + // Create new class with an automatically calculated max variable and constant pool + ClassWriter cw = new ClassWriter(ClassWriter.COMPUTE_MAXS); + + // Start visiting class + cw.visit(V1_8 /* Version of Java to compile with */, + ACC_PUBLIC /* Access permissions */, + "TClass", /* Simple class name */ + "Lcom/tofvesson/async/TClass;", /* Fully qualified class signature */ + "Ljava/lang/Object;", /* Superclass */ + null /* Interfaces */ + ); + + // Start visiting constructor "TClass()" + MethodVisitor mv = cw.visitMethod( + ACC_PUBLIC, /* Access permissions */ + "", /* Method name */ + "Lcom/tofvesson/async/TClass;", /* Method descriptor */ + "()V", /* Method signature */ + null /* Exceptions */ + ); + + // Invoke super() on inherited Object + mv.visitVarInsn(ALOAD, 0); // Load "this" from local constant pool and put on stack + mv.visitMethodInsn( + INVOKESPECIAL, /* How to invoke method ("Special" for invoking super()) */ + "java/lang/Object", /* Class where method is defined */ + "", /* Method to invoke */ + "()V", /* Target method signature */ + false /* Is target object an object generified to an interface (interface method) */ + ); + + mv.visitMethodInsn(INVOKESTATIC, "com/tofvesson/async/Test", "test", "()V", false); + + // Return + mv.visitInsn(RETURN); + + // Stop visiting constructor + mv.visitEnd(); + + // Stop visiting class + cw.visitEnd(); + + + } + + public void run(){ + System.out.println("Hello"); + } + + private static void test(){ System.out.println("Called incorrectly"); } + + +} diff --git a/src/com/tofvesson/async/WorkerThread.java b/src/com/tofvesson/async/WorkerThread.java new file mode 100644 index 0000000..6b38bc7 --- /dev/null +++ b/src/com/tofvesson/async/WorkerThread.java @@ -0,0 +1,98 @@ +package com.tofvesson.async; + +import javafx.util.Pair; +import java.lang.reflect.Field; +import java.lang.reflect.InvocationTargetException; +import java.lang.reflect.Method; +import java.util.*; +import java.util.concurrent.ArrayBlockingQueue; +import java.util.concurrent.ThreadLocalRandom; + +/** + * A thread tasked with accepting multiple instructions. This is useful for people who don't want to constantly create new threads for heavy work. + * Also good if the fields in an object instantiated in this thread aren't volatile. + */ +public class WorkerThread extends Thread { + + List ids = new ArrayList<>(); + volatile Queue>>> queue; + volatile Map output = new HashMap<>(); + volatile boolean alive=true, completed=false; + + /** + * Create a WorkerThread. + * @param queueSize Maximum amount of instructions to be queued. + */ + public WorkerThread(int queueSize){ + super(); + try{ + Field f = Thread.class.getDeclaredField("target"); + f.setAccessible(true); + f.set(this, (Runnable) ()-> + { + synchronized (Thread.currentThread()) { + while (alive) { + if (queue.size() != 0) { + Pair>> q = queue.poll(); + Pair> instr = q.getValue(); + try { + output.put(q.getKey(), instr.getKey().invoke(instr.getValue().getKey(), (Object[]) instr.getValue().getValue())); + completed = true; + } catch (IllegalAccessException | InvocationTargetException e) { + e.printStackTrace(); + } + } + } + } + }); + }catch(Exception e){} + queue = new ArrayBlockingQueue<>(queueSize); + } + + /** + * Add a new instruction for the worker thread. + * @param invokeOn Object to invoke method on. + * @param m Method to invoke. + * @param params Parameters for method. + * @return A UID corresponding to the queued instruction. + */ + public long enqueue(Object invokeOn, Method m, Object... params){ + m.setAccessible(true); + long id; + do{ id = ThreadLocalRandom.current().nextLong(); }while(ids.contains(id)); + queue.add(new Pair<>(id, new Pair<>(m, new Pair<>(invokeOn, params)))); + ids.add(id); + return id; + } + + /** + * Waits for instruction to be processed and return value to be acquired. + * @param id UID of the supplied instruction. + * @return Return value from instruction called in worker thread. + */ + public Object pop(long id){ + if(!ids.contains(id)) return null; + if(Thread.currentThread() == this) throw new RuntimeException("Attempting to await result in worker thread! This causes the thread to lock."); + while(!output.containsKey(id)) ; // Block caller thread until result is received + Object o = output.get(id); + output.remove(id); + ids.remove(id); + return o; + } + + /** + * Waits for current method invocation to finish before stopping thread. + */ + public void stopGraceful(){ + alive = false; + } + + /** + * Interrupts thread to kill it. NOTE: This method is unsafe and could cause issues if it is performing an I/O operation. + * Only call this if you are 100% sure that it won't break something or if are ready to deal with the consequences. + */ + public void stopForced(){ + alive = false; + interrupt(); + } +} diff --git a/src/com/tofvesson/hacks/ClassHacks.java b/src/com/tofvesson/hacks/ClassHacks.java new file mode 100644 index 0000000..3d5d486 --- /dev/null +++ b/src/com/tofvesson/hacks/ClassHacks.java @@ -0,0 +1,59 @@ +package com.tofvesson.hacks; + +import jdk.internal.org.objectweb.asm.ClassReader; +import jdk.internal.org.objectweb.asm.ClassWriter; +import jdk.internal.org.objectweb.asm.MethodVisitor; +import sun.misc.Unsafe; +import java.io.IOException; +import java.lang.reflect.Field; +import java.lang.reflect.InvocationTargetException; +import java.lang.reflect.Method; + +import static org.objectweb.asm.Opcodes.*; + +public class ClassHacks { + public static Class injectField(Class target, Object toInject, String name) throws IOException, NoSuchMethodException, InvocationTargetException, IllegalAccessException { + try{ // Get unsafe + Field f = target.getDeclaredField(name); + f.setAccessible(true); + + Field f1 = Unsafe.class.getDeclaredField("theUnsafe"); + f1.setAccessible(true); + + f.set(((Unsafe)f1.get(null)).allocateInstance(target), toInject); // Check if field exists + }catch(Exception e){} // Will never happen + + // Read from class + ClassReader cr = new ClassReader(target.getClassLoader().getResourceAsStream(target.getName().replace(".", "/")+".class")); + ClassWriter cw = new ClassWriter(cr, ClassWriter.COMPUTE_MAXS); // Prepare to write + + // Get all fully defined interface class names + String[] itf = new String[target.getInterfaces().length]; + for(int i = 0; i", "()V", "L"+target.getName().replace(".", "/")+";", null); + mv.visitVarInsn(ALOAD, 0); // Load "this" reference + mv.visitMethodInsn(INVOKESPECIAL, target.getSuperclass().getName().replace(".", "/"), "", "()V", false); + mv.visitInsn(RETURN); + mv.visitMaxs(1, 1); + mv.visitEnd(); + // Define field + cw.visitField(ACC_PUBLIC, name, "L"+toInject.getClass().getName().replace(".", "/")+";", null, toInject).visitEnd(); + + // Finish modifications + cw.visitEnd(); + + try{ + Method m = ClassLoader.class.getDeclaredMethod("defineClass", String.class, byte[].class, int.class, int.class); + m.setAccessible(true); + byte[] b; + return (Class) m.invoke(target.getClassLoader(), target.getSimpleName(), b=cw.toByteArray(), 0, b.length); // Redefine class + }catch(Exception e){ e.printStackTrace(); } + throw new RuntimeException("Something went very wrong"); + } +} diff --git a/src/com/tofvesson/hacks/Reloader.java b/src/com/tofvesson/hacks/Reloader.java new file mode 100644 index 0000000..d0408ca --- /dev/null +++ b/src/com/tofvesson/hacks/Reloader.java @@ -0,0 +1,49 @@ +package com.tofvesson.hacks; + +import sun.misc.Unsafe; +import java.lang.reflect.Field; +import java.util.ArrayList; +import java.util.List; +import static java.lang.reflect.Modifier.STATIC; + +public class Reloader { + private static final List reload = new ArrayList<>(); + public void reloadAll(){} + public void reloadClasses(Class... c) throws ClassNotFoundException { + final boolean[] b = {false}; + reload.stream().filter(o->{ + for(Class c1 : c) b[0] = b[0] || (b[0]= o!=null && c1.isAssignableFrom(o.getClass())); + return b[0]; + }); // Check if class needs reloading + if(!b[0]) return; + Unsafe u = null; + try { + Field f = Unsafe.class.getDeclaredField("theUnsafe"); + f.setAccessible(true); + u = (Unsafe) f.get(null); + } catch (Exception ignored) {} + if(u==null) throw new RuntimeException("Something went very wrong! Unsafe reference is null."); + List reloaded = new ArrayList<>(); + reload.stream().filter(o->{ + for(Class c1 : c) if(c1.isAssignableFrom(o.getClass())) return true; + return false; + }).forEach(reloaded::add); // Move all objects to be reloaded to a holder + reload.removeAll(reloaded); + for(Class c1 : c) c1.getClassLoader().loadClass(c1.getName()); // Re load class in classloader + for(Object o : reloaded){ + try{ + Class reloadedClass = Class.forName(o.getClass().getName()); + Object o1 = u.allocateInstance(reloadedClass); + for(Field f : o.getClass().getDeclaredFields()){ + f.setAccessible(true); + try{ + Field f1 = reloadedClass.getDeclaredField(f.getName()); + f1.setAccessible(true); + f1.set((f1.getModifiers()&STATIC)==STATIC?null:o1, f.get((f.getModifiers()&STATIC)==STATIC?null:o)); + }catch(Exception ignored){} + } + + }catch(Exception ignored){} + } + } +} diff --git a/src/com/tofvesson/logging/Tag.java b/src/com/tofvesson/logging/Tag.java new file mode 100644 index 0000000..acb4c1c --- /dev/null +++ b/src/com/tofvesson/logging/Tag.java @@ -0,0 +1,5 @@ +package com.tofvesson.logging; + +public interface Tag { + String apply(String output); +} diff --git a/src/com/tofvesson/logging/TagStream.java b/src/com/tofvesson/logging/TagStream.java new file mode 100644 index 0000000..b106532 --- /dev/null +++ b/src/com/tofvesson/logging/TagStream.java @@ -0,0 +1,36 @@ +package com.tofvesson.logging; + +import java.io.IOException; +import java.io.OutputStream; +import java.io.PrintStream; +import java.util.ArrayList; +import java.util.List; + +public class TagStream extends PrintStream { + + private final OutputStream node; + private List tags = new ArrayList<>(); + + public TagStream(PrintStream node){ + super(node); + this.node = node; + } + + public TagStream(OutputStream end){ + super(end); + this.node = end; + } + + public List getTags(){ return tags; } + public void addTag(Tag t){ tags.add(t); } + public void removeTag(Tag t){ tags.remove(t); } + public void removeTag(int index){ tags.remove(index); } + + @Override + public void print(String s){ + if(s==null) s="null"; + for(Tag t : tags) s = t.apply(s); + if(node instanceof PrintStream) ((PrintStream)node).print(s); + else try { node.write(s.getBytes()); } catch (IOException e) { e.printStackTrace(); } + } +} diff --git a/src/com/tofvesson/reflection/EnumDefinition.java b/src/com/tofvesson/reflection/EnumDefinition.java new file mode 100644 index 0000000..69f848c --- /dev/null +++ b/src/com/tofvesson/reflection/EnumDefinition.java @@ -0,0 +1,114 @@ +package com.tofvesson.reflection; + +import java.util.HashMap; + +/** + * A definition for custom enum creation. + */ +public class EnumDefinition { + HashMap params = new HashMap<>(); // Assign a specific type to each parameter + + /** + * Put an object in the parameter list. + * @param value The parameter to supply. (Type is derived automatically) + * @return A reference to the EnumDefinition object this method was called on (for chaining). + */ + public EnumDefinition putObject(Object value){ + params.put(value, value.getClass()); + return this; + } + + /** + * Put a primitive value in the parameter list. + * @param autoBoxed An autoboxed version of the parameter. (For example putPrimitive(5) will automatically become Integer) + * @return A reference to the EnumDefinition object this method was called on (for chaining). + * @throws NoSuchFieldException + */ + public EnumDefinition putPrimitive(Object autoBoxed) throws NotAutoBoxedException{ + // All autoboxed versions of primitives have a reference to their boxed primitive + try { + params.put(autoBoxed, autoBoxed.getClass().getDeclaredField("value").getType()); + }catch(Exception e){ throw new NotAutoBoxedException(); } + return this; + } + + /** + * Safe wrapper of {@link #putPrimitive(Object)} for boolean. + * @param b Boolean parameter. + * @return A reference to the EnumDefinition object this method was called on (for chaining). + */ + public EnumDefinition putBoolean(boolean b){ + try { return putPrimitive(b); } catch (NotAutoBoxedException e) { } + return this; + } + + /** + * Safe wrapper of {@link #putPrimitive(Object)} for byte. + * @param b Byte parameter. + * @return A reference to the EnumDefinition object this method was called on (for chaining). + */ + public EnumDefinition putByte(byte b){ + try { return putPrimitive(b); } catch (NotAutoBoxedException e) { } + return this; + } + + /** + * Safe wrapper of {@link #putPrimitive(Object)} for char. + * @param c Character parameter. + * @return A reference to the EnumDefinition object this method was called on (for chaining). + */ + public EnumDefinition putChar(char c){ + try { return putPrimitive(c); } catch (NotAutoBoxedException e) { } + return this; + } + + /** + * Safe wrapper of {@link #putPrimitive(Object)} for short. + * @param s Short parameter. + * @return A reference to the EnumDefinition object this method was called on (for chaining). + */ + public EnumDefinition putShort(short s){ + try { return putPrimitive(s); } catch (NotAutoBoxedException e) { } + return this; + } + + /** + * Safe wrapper of {@link #putPrimitive(Object)} for int. + * @param i Integer parameter. + * @return A reference to the EnumDefinition object this method was called on (for chaining). + */ + public EnumDefinition putInt(int i){ + try { return putPrimitive(i); } catch (NotAutoBoxedException e) { } + return this; + } + + /** + * Safe wrapper of {@link #putPrimitive(Object)} for long. + * @param l Long parameter. + * @return A reference to the EnumDefinition object this method was called on (for chaining). + */ + public EnumDefinition putLong(long l){ + try { return putPrimitive(l); } catch (NotAutoBoxedException e) { } + return this; + } + + /** + * Safe wrapper of {@link #putPrimitive(Object)} for float. + * @param f Floating point parameter. + * @return A reference to the EnumDefinition object this method was called on (for chaining). + */ + public EnumDefinition putFloat(float f){ + try { return putPrimitive(f); } catch (NotAutoBoxedException e) { } + return this; + } + + /** + * Safe wrapper of {@link #putPrimitive(Object)} for double. + * @param d Double parameter. + * @return A reference to the EnumDefinition object this method was called on (for chaining). + */ + public EnumDefinition putDouble(double d){ + try { return putPrimitive(d); } catch (NotAutoBoxedException e) { } + return this; + } +} diff --git a/src/com/tofvesson/reflection/Helper.java b/src/com/tofvesson/reflection/Helper.java new file mode 100644 index 0000000..39003c4 --- /dev/null +++ b/src/com/tofvesson/reflection/Helper.java @@ -0,0 +1,111 @@ +package com.tofvesson.reflection; + +import sun.misc.Unsafe; +import sun.reflect.ConstructorAccessor; +import java.lang.reflect.Array; +import java.lang.reflect.Constructor; +import java.lang.reflect.Field; +import java.lang.reflect.Method; + +public class Helper { + /** + * Allows you to create a completely custom Enum value. If the supplied value already exists, it will be returned. + * will not be created; the value of the existing one will be updated. + * @param clazz The class to attribute the new enum to. + * @param addToValuesArray Whether or not to update the internal, "immutable" values array with the new value (ignored if value already exists). + * @return A new/existing enum. + */ + @SuppressWarnings("unchecked") + public static > T customEnum(Class clazz, boolean addToValuesArray, String name, EnumDefinition def){ + T u; + try { + // Get a reference to the static method values() and get values + Method v = clazz.getDeclaredMethod("values"); + v.setAccessible(true); + T[] values = (T[]) v.invoke(null); + + // Return object if it already exists + for(T u2 : values) if(u2.name().equals(name)) return u2; + + // Generate enum parameter definition + Class[] paramList = new Class[def.params.size()+2]; + paramList[0] = String.class; // Name + paramList[1] = int.class; // Ordinal + int iterator = paramList.length; + for(Class c : def.params.values()) paramList[--iterator] = c; // Shit's fucking reversed + + // Get enum constructor (inherited from Enum.class) + Constructor c = clazz.getDeclaredConstructor(paramList); + c.setAccessible(true); + Method m = Constructor.class.getDeclaredMethod("acquireConstructorAccessor"); + m.setAccessible(true); + + // Get constructor accessor since Constructor.newInstance throws an exception because Enums are "immutable" + ConstructorAccessor access = (ConstructorAccessor) m.invoke(c); + + Object[] parameters = new Object[def.params.size()+2]; + parameters[0] = name; + parameters[1] = values.length; + iterator = parameters.length; + for(Object o : def.params.keySet()) parameters[--iterator] = o; + + // Create new instance of enum with valid name and ordinal + u = (T) access.newInstance(parameters); + + // Get the final name field from Enum.class and make it temporarily modifiable + Field f = Enum.class.getDeclaredField("name"); + f.setAccessible(true); + + // Rename the newly created enum to the requested name + f.set(u, name); + + if(!addToValuesArray) return u; // Stops here if + + // Get the current values field from Enum (a bitch to modify) + f = clazz.getDeclaredField("$VALUES"); + f.setAccessible(true); + T[] $VALUES = (T[]) Array.newInstance(clazz, values.length+1); + System.arraycopy(values, 0, $VALUES, 0, values.length); // Copy over values from old array + $VALUES[values.length] = u; // Add out custom enum to our local array + + // Start doing magic by getting an instance of sun.reflect.UnsafeQualifiedStaticObjectFieldAccessorImpl.class + // Class is package-local so we can't reference it by anything other than Object + m = Field.class.getDeclaredMethod("getFieldAccessor", Object.class); + m.setAccessible(true); + Object UQSOFAImpl = m.invoke(f, u); + + // Get "isReadOnly" flag ($VALUES is always read-only even if Field.setAccessible(true) is called) + // Flag is located in superclass (sun.reflect.UnsafeQualifiedStaticFieldAccessorImpl.class (also fucking package-local)) + // Set flag to 'false' to allow for modification against Java's will + Field f1 = UQSOFAImpl.getClass().getSuperclass().getDeclaredField("isReadOnly"); + f1.setAccessible(true); + f1.setBoolean(UQSOFAImpl, false); + + // Invoke set() method on UnsafeQualifiedStaticObjectFieldAccessorImpl object which sets the + // private field $VALUES to our new array + m = UQSOFAImpl.getClass().getDeclaredMethod("set", Object.class, Object.class); + m.setAccessible(true); + m.invoke(UQSOFAImpl, f, $VALUES); + } catch (Exception wrongParams) { throw new RuntimeException(wrongParams); } + return u; + } + + /** + * Create a new object without the hassle of having to construct it. WARNING: Not usually a good idea. + * @param clazz Class to instantiate. + * @return An object instance of the supplied class that hasn't been constructed. + * @throws InstantiationException + */ + public static T create(Class clazz) throws InstantiationException{ + try { + Field f = Unsafe.class.getDeclaredField("theUnsafe"); + f.setAccessible(true); + //noinspection unchecked + return (T) ((Unsafe) f.get(null)).allocateInstance(clazz); + } catch (NoSuchFieldException | IllegalAccessException e) { + System.err.println("Whatever you did, it was VERY wrong! Stop it!"); + e.printStackTrace(); + return null; + } + } +} diff --git a/src/com/tofvesson/reflection/NotAutoBoxedException.java b/src/com/tofvesson/reflection/NotAutoBoxedException.java new file mode 100644 index 0000000..168d73d --- /dev/null +++ b/src/com/tofvesson/reflection/NotAutoBoxedException.java @@ -0,0 +1,7 @@ +package com.tofvesson.reflection; + +public class NotAutoBoxedException extends Exception { + public NotAutoBoxedException(){ super(); } + public NotAutoBoxedException(Throwable t){ super(t); } + public NotAutoBoxedException(String reason){ super(reason); } +} diff --git a/src/com/tofvesson/reflection/SafeReflection.java b/src/com/tofvesson/reflection/SafeReflection.java new file mode 100644 index 0000000..8d48f6e --- /dev/null +++ b/src/com/tofvesson/reflection/SafeReflection.java @@ -0,0 +1,34 @@ +package com.tofvesson.reflection; + +import java.lang.reflect.Field; +import java.lang.reflect.Method; + +public class SafeReflection { + public static Method getMethod(Class c, String name, Class... params){ + try{ + Method m = c.getDeclaredMethod(name, params); + m.setAccessible(true); + return m; + }catch(Exception e){} + return null; + } + public static Field getField(Class c, String name){ + try{ + Field f = c.getDeclaredField(name); + f.setAccessible(true); + return f; + }catch(Exception e){} + return null; + } + public static Object getEnclosingClassObjectRef(Object nested){ + try{ + Field f = nested.getClass().getDeclaredField("this$0"); + f.setAccessible(true); + return f.get(nested); + }catch(Exception e){} + return null; + } + public static boolean isNestedClass(Class c){ + return c.getEnclosingClass()!=null; + } +}