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GeezerVison is showing github.com — processing/java/src/processing/mode/java/Debugger.java at master · texone/processing Expand file tree/ Copy pathDebugger.javaMore file actions 1466 lines (1250 loc) · 42.4 KB / Copy pathDebugger.javaFile metadata and controls1466 lines (1250 loc) · 42.4 KB 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 101 102 103 104 105 106 107 108 109 110 111 112 113 114 115 116 117 118 119 120 121 122 123 124 125 126 127 128 129 130 131 132 133 134 135 136 137 138 139 140 141 142 143 144 145 146 147 148 149 150 151 152 153 154 155 156 157 158 159 160 161 162 163 164 165 166 167 168 169 170 171 172 173 174 175 176 177 178 179 180 181 182 183 184 185 186 187 188 189 190 191 192 193 194 195 196 197 198 199 200 201 202 203 204 205 206 207 208 209 210 211 212 213 214 215 216 217 218 219 220 221 222 223 224 225 226 227 228 229 230 231 232 233 234 235 236 237 238 239 240 241 242 243 244 245 246 247 248 249 250 251 252 253 254 255 256 257 258 259 260 261 262 263 264 265 266 267 268 269 270 271 272 273 274 275 276 277 278 279 280 281 282 283 284 285 286 287 288 289 290 291 292 293 294 295 296 297 298 299 300 301 302 303 304 305 306 307 308 309 310 311 312 313 314 315 316 317 318 319 320 321 322 323 324 325 326 327 328 329 330 331 332 333 334 335 336 337 338 339 340 341 342 343 344 345 346 347 348 349 350 351 352 353 354 355 356 357 358 359 360 361 362 363 364 365 366 367 368 369 370 371 372 373 374 375 376 377 378 379 380 381 382 383 384 385 386 387 388 389 390 391 392 393 394 395 396 397 398 399 400 401 402 403 404 405 406 407 408 409 410 411 412 413 414 415 416 417 418 419 420 421 422 423 424 425 426 427 428 429 430 431 432 433 434 435 436 437 438 439 440 441 442 443 444 445 446 447 448 449 450 451 452 453 454 455 456 457 458 459 460 461 462 463 464 465 466 467 468 469 470 471 472 473 474 475 476 477 478 479 480 481 482 483 484 485 486 487 488 489 490 491 492 493 494 495 496 497 498 499 500 501 502 503 504 505 506 507 508 509 510 511 512 513 514 515 516 517 518 519 520 521 522 523 524 525 526 527 528 529 530 531 532 533 534 535 536 537 538 539 540 541 542 543 544 545 546 547 548 549 550 551 552 553 554 555 556 557 558 559 560 561 562 563 564 565 566 567 568 569 570 571 572 573 574 575 576 577 578 579 580 581 582 583 584 585 586 587 588 589 590 591 592 593 594 595 596 597 598 599 600 601 602 603 604 605 606 607 608 609 610 611 612 613 614 615 616 617 618 619 620 621 622 623 624 625 626 627 628 629 630 631 632 633 634 635 636 637 638 639 640 641 642 643 644 645 646 647 648 649 650 651 652 653 654 655 656 657 658 659 660 661 662 663 664 665 666 667 668 669 670 671 672 673 674 675 676 677 678 679 680 681 682 683 684 685 686 687 688 689 690 691 692 693 694 695 696 697 698 699 700 701 702 703 704 705 706 707 708 709 710 711 712 713 714 715 716 717 718 719 720 721 722 723 724 725 726 727 728 729 730 731 732 733 734 735 736 737 738 739 740 741 742 743 744 745 746 747 748 749 750 751 752 753 754 755 756 757 758 759 760 761 762 763 764 765 766 767 768 769 770 771 772 773 774 775 776 777 778 779 780 781 782 783 784 785 786 787 788 789 790 791 792 793 794 795 796 797 798 799 800 801 802 803 804 805 806 807 808 809 810 811 812 813 814 815 816 817 818 819 820 821 822 823 824 825 826 827 828 829 830 831 832 833 834 835 836 837 838 839 840 841 842 843 844 845 846 847 848 849 850 851 852 853 854 855 856 857 858 859 860 861 862 863 864 865 866 867 868 869 870 871 872 873 874 875 876 877 878 879 880 881 882 883 884 885 886 887 888 889 890 891 892 893 894 895 896 897 898 899 900 901 902 903 904 905 906 907 908 909 910 911 912 913 914 915 916 917 918 919 920 921 922 923 924 925 926 927 928 929 930 931 932 933 934 935 936 937 938 939 940 941 942 943 944 945 946 947 948 949 950 951 952 953 954 955 956 957 958 959 960 961 962 963 964 965 966 967 968 969 970 971 972 973 974 975 976 977 978 979 980 981 982 983 984 985 986 987 988 989 990 991 992 993 994 995 996 997 998 999 1000 /* -*- mode: java; c-basic-offset: 2; indent-tabs-mode: nil -*- */ /* Part of the Processing project - http://processing.org Copyright (c) 2012-16 The Processing Foundation This program is free software; you can redistribute it and/or modify it under the terms of the GNU General Public License version 2 as published by the Free Software Foundation. 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, write to the Free Software Foundation, Inc. 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA. */ package processing.mode.java; import com.sun.jdi.*; import com.sun.jdi.event.*; import com.sun.jdi.request.*; import java.io.*; import java.util.ArrayList; import java.util.HashMap; import java.util.HashSet; import java.util.Iterator; import java.util.LinkedHashSet; import java.util.List; import java.util.Map; import java.util.Map.Entry; import java.util.Set; import javax.swing.JTree; // needed for javadocs import javax.swing.tree.DefaultMutableTreeNode; import processing.app.Messages; import processing.app.Sketch; import processing.app.SketchCode; import processing.mode.java.debug.*; import processing.mode.java.runner.Runner; public class Debugger { /// editor window, acting as main view protected JavaEditor editor; /// the runtime, contains debuggee VM protected Runner runtime; /// debuggee vm has started, VMStartEvent received, main class loaded protected boolean started = false; /// currently paused at breakpoint or step protected boolean paused = false; /// thread the last breakpoint or step occured in protected ThreadReference currentThread; /// name of the main class that's currently being debugged protected String mainClassName; /// the debuggee's main class protected ReferenceType mainClass; /// holds all loaded classes in the debuggee VM protected Set<ReferenceType> classes = new LinkedHashSet<>(); /// listeners for class load events protected List<ClassLoadListener> classLoadListeners = new ArrayList<>(); /// path to the src folder of the current build protected String srcPath; /// list of current breakpoints protected List<LineBreakpoint> breakpoints = new ArrayList<>(); /// the step request we are currently in, or null if not in a step protected StepRequest requestedStep; /// maps line number changes at runtime (orig -> changed) protected Map<LineID, LineID> runtimeLineChanges = new HashMap<>(); /// tab filenames which already have been tracked for runtime changes protected Set<String> runtimeTabsTracked = new HashSet<>(); /// VM event listener protected VMEventListener vmEventListener = this::vmEvent; public Debugger(JavaEditor editor) { this.editor = editor; } public VirtualMachine vm() { if (runtime != null) { return runtime.vm(); } return null; } public JavaEditor getEditor() { return editor; } /** * Retrieve the main class of the debuggee VM. * @return the main classes {@link ReferenceType} * or null if the debugger is not started. */ public ReferenceType getMainClass() { if (isStarted()) { return mainClass; } return null; } /** * Get the main and nested {@link ReferenceType}s for the sketch. * @return a list of main and nested {@link ReferenceType}s, * empty list if nothing found (e.g. not yet loaded) */ public Set<ReferenceType> getClasses() { return classes; } /** * Add a class load listener. Will be notified when a class is loaded in the * debuggee VM. * @param listener the {@link ClassLoadListener} */ public void addClassLoadListener(ClassLoadListener listener) { classLoadListeners.add(listener); } /** * Remove a class load listener. Cease to be notified when classes are * loaded in the debuggee VM. * @param listener {@link ClassLoadListener} */ public void removeClassLoadListener(ClassLoadListener listener) { classLoadListeners.remove(listener); } /** * Start a debugging session. Builds the sketch and launches a VM to run it. * VM starts suspended. Should produce a VMStartEvent. */ public synchronized void startDebug() { //stopDebug(); // stop any running sessions if (isStarted()) { return; // do nothing } // we are busy now editor.statusBusy(); // clear console editor.clearConsole(); // clear variable inspector (also resets expanded states) editor.variableInspector().reset(); // load edits into sketch obj, etc... editor.prepareRun(); // after prepareRun, since this removes highlights editor.activateDebug(); try { Sketch sketch = editor.getSketch(); JavaBuild build = new JavaBuild(sketch); log("building sketch: " + sketch.getName()); //LineMapping.addLineNumbers(sketch); // annotate // mainClassName = build.build(false); mainClassName = build.build(true); //LineMapping.removeLineNumbers(sketch); // annotate log("class: " + mainClassName); // folder with assembled/preprocessed src srcPath = build.getSrcFolder().getPath(); log("build src: " + srcPath); // folder with compiled code (.class files) log("build bin: " + build.getBinFolder().getPath()); if (mainClassName != null) { // generate the source line mapping //lineMap = LineMapping.generateMapping(srcPath + File.separator + mainClassName + ".java"); log("launching debuggee runtime"); runtime = new Runner(build, editor); VirtualMachine vm = runtime.debug(null); // non-blocking if (vm == null) { loge("error 37: launch failed", null); } // start receiving vm events VMEventReader eventThread = new VMEventReader(vm.eventQueue(), vmEventListener); eventThread.start(); startTrackingLineChanges(); editor.statusBusy(); } } catch (Exception e) { editor.statusError(e); } } /** * End debugging session. Stops and disconnects VM. Should produce * VMDisconnectEvent. */ public synchronized void stopDebug() { editor.variableInspector().lock(); if (runtime != null) { Messages.log("closing runtime"); for (LineBreakpoint bp : breakpoints) { bp.detach(); } runtime.close(); runtime = null; //build = null; classes.clear(); // need to clear highlight here because, VMDisconnectedEvent seems to be unreliable. TODO: likely synchronization problem editor.clearCurrentLine(); } stopTrackingLineChanges(); started = false; editor.deactivateDebug(); editor.deactivateContinue(); editor.deactivateStep(); editor.statusEmpty(); } /** Resume paused debugging session. Resumes VM. */ public synchronized void continueDebug() { editor.activateContinue(); editor.variableInspector().lock(); //editor.clearSelection(); //clearHighlight(); editor.clearCurrentLine(); if (!isStarted()) { startDebug(); } else if (isPaused()) { runtime.vm().resume(); paused = false; editor.statusBusy(); } } /** * Step through source code lines. * @param stepDepth the step depth ({@link StepRequest#STEP_OVER}, * {@link StepRequest#STEP_INTO} or {@link StepRequest#STEP_OUT}) */ protected void step(int stepDepth) { if (!isStarted()) { startDebug(); } else if (isPaused()) { editor.variableInspector().lock(); editor.activateStep(); // use global to mark that there is a step request pending requestedStep = runtime.vm().eventRequestManager().createStepRequest(currentThread, StepRequest.STEP_LINE, stepDepth); requestedStep.addCountFilter(1); // valid for one step only requestedStep.enable(); paused = false; runtime.vm().resume(); editor.statusBusy(); } } /** Step over current statement. */ public synchronized void stepOver() { step(StepRequest.STEP_OVER); } /** Step into current statement. */ public synchronized void stepInto() { step(StepRequest.STEP_INTO); } /** Step out of current statement. */ public synchronized void stepOut() { step(StepRequest.STEP_OUT); } // /** Print the current stack trace. */ // public synchronized void printStackTrace() { // if (isStarted()) { // printStackTrace(currentThread); // } // } // // // /** // * Print local variables. Outputs type, name and value of each variable. // */ // public synchronized void printLocals() { // if (isStarted()) { // printLocalVariables(currentThread); // } // } // // // /** // * Print fields of current {@code this}-object. // * Outputs type, name and value of each field. // */ // public synchronized void printThis() { // if (isStarted()) { // printThis(currentThread); // } // } // // // /** // * Print a source code snippet of the current location. // */ // public synchronized void printSource() { // if (isStarted()) { // printSourceLocation(currentThread); // } // } /** * Set a breakpoint on the current line. */ synchronized void setBreakpoint() { setBreakpoint(editor.getCurrentLineID()); } /** * Set a breakpoint on a line in the current tab. * @param lineIdx the line index (0-based) of the current tab to set the * breakpoint on */ synchronized void setBreakpoint(int lineIdx) { setBreakpoint(editor.getLineIDInCurrentTab(lineIdx)); } synchronized void setBreakpoint(LineID line) { // do nothing if we are kinda busy if (isStarted() && !isPaused()) { return; } // do nothing if there already is a breakpoint on this line if (hasBreakpoint(line)) { return; } breakpoints.add(new LineBreakpoint(line, this)); log("set breakpoint on line " + line); } /** * Remove a breakpoint from the current line (if set). */ synchronized void removeBreakpoint() { removeBreakpoint(editor.getCurrentLineID().lineIdx()); } /** * Remove a breakpoint from a line in the current tab. * * @param lineIdx the line index (0-based) in the current tab to remove the * breakpoint from */ void removeBreakpoint(int lineIdx) { // do nothing if we are kinda busy if (isBusy()) { return; } LineBreakpoint bp = breakpointOnLine(editor.getLineIDInCurrentTab(lineIdx)); if (bp != null) { bp.remove(); breakpoints.remove(bp); log("removed breakpoint " + bp); } } /** Remove all breakpoints. */ synchronized void clearBreakpoints() { // TODO: handle busy-ness correctly if (isBusy()) { log("busy"); return; } for (LineBreakpoint bp : breakpoints) { bp.remove(); } breakpoints.clear(); } /** * Clear breakpoints in a specific tab. * @param tabFilename the tab's file name */ synchronized void clearBreakpoints(String tabFilename) { // TODO: handle busy-ness correctly if (isBusy()) { log("busy"); return; } Iterator<LineBreakpoint> i = breakpoints.iterator(); while (i.hasNext()) { LineBreakpoint bp = i.next(); if (bp.lineID().fileName().equals(tabFilename)) { bp.remove(); i.remove(); } } } /** * Get the breakpoint on a certain line, if set. * @param line the line to get the breakpoint from * @return the breakpoint, or null if no breakpoint is set on the specified * line. */ LineBreakpoint breakpointOnLine(LineID line) { for (LineBreakpoint bp : breakpoints) { if (bp.isOnLine(line)) { return bp; } } return null; } /** * Toggle a breakpoint on a line in the current tab. * @param lineIdx the line index (0-based) in the current tab */ synchronized void toggleBreakpoint(int lineIdx) { LineID line = editor.getLineIDInCurrentTab(lineIdx); int index = line.lineIdx(); if (hasBreakpoint(line)) { removeBreakpoint(index); } else { // Make sure the line contains actual code before setting the break // https://github.com/processing/processing/issues/3765 if (editor.getLineText(index).trim().length() != 0) { setBreakpoint(index); } } } /** * Check if there's a breakpoint on a particular line. * @param line the line id * @return true if a breakpoint is set on the given line, otherwise false */ protected boolean hasBreakpoint(LineID line) { LineBreakpoint bp = breakpointOnLine(line); return bp != null; } // /** Print a list of currently set breakpoints. */ // public synchronized void listBreakpoints() { // if (breakpoints.isEmpty()) { // System.out.println("no breakpoints"); // } else { // System.out.println("line breakpoints:"); // for (LineBreakpoint bp : breakpoints) { // System.out.println(bp); // } // } // } /** * Retrieve a list of breakpoint in a particular tab. * @param tabFilename the tab's file name * @return the list of breakpoints in the given tab */ synchronized List<LineBreakpoint> getBreakpoints(String tabFilename) { List<LineBreakpoint> list = new ArrayList<>(); for (LineBreakpoint bp : breakpoints) { if (bp.lineID().fileName().equals(tabFilename)) { list.add(bp); } } return list; } /** * Callback for VM events. Will be called from another thread. * ({@link VMEventReader}) * @param es Incoming set of events from VM */ public synchronized void vmEvent(EventSet es) { VirtualMachine vm = vm(); if (vm != null && vm != es.virtualMachine()) { // This is no longer VM we are interested in, // we already cleaned up and run different VM now. return; } for (Event e : es) { log("*** VM Event: " + e); if (e instanceof VMStartEvent) { vmStartEvent(); } else if (e instanceof ClassPrepareEvent) { vmClassPrepareEvent((ClassPrepareEvent) e); } else if (e instanceof BreakpointEvent) { vmBreakPointEvent((BreakpointEvent) e); } else if (e instanceof StepEvent) { vmStepEvent((StepEvent) e); } else if (e instanceof VMDisconnectEvent) { stopDebug(); } else if (e instanceof VMDeathEvent) { started = false; editor.statusEmpty(); } } } private void createClassPrepareRequest(String name) { ClassPrepareRequest classPrepareRequest = runtime.vm().eventRequestManager().createClassPrepareRequest(); classPrepareRequest.addClassFilter(name); classPrepareRequest.enable(); } private void vmStartEvent() { // break on main class load log("requesting event on main class load: " + mainClassName); createClassPrepareRequest(mainClassName); createClassPrepareRequest(mainClassName + "$*"); // break on loading custom classes for (SketchCode tab : editor.getSketch().getCode()) { if (tab.isExtension("java")) { log("requesting event on class load: " + tab.getPrettyName()); String name = tab.getPrettyName(); createClassPrepareRequest(name); createClassPrepareRequest(name + "$*"); } } runtime.vm().resume(); } private void vmClassPrepareEvent(ClassPrepareEvent ce) { ReferenceType rt = ce.referenceType(); currentThread = ce.thread(); paused = true; // for now we're paused if (rt.name().equals(mainClassName)) { //printType(rt); mainClass = rt; classes.add(rt); log("main class load: " + rt.name()); started = true; // now that main class is loaded, we're started } else { classes.add(rt); // save loaded classes log("class load: {0}" + rt.name()); } // notify listeners for (ClassLoadListener listener : classLoadListeners) { if (listener != null) { listener.classLoaded(rt); } } paused = false; // resuming now runtime.vm().resume(); } private void vmBreakPointEvent(BreakpointEvent be) { currentThread = be.thread(); // save this thread updateVariableInspector(currentThread); // this is already on the EDT final LineID newCurrentLine = locationToLineID(be.location()); javax.swing.SwingUtilities.invokeLater(new Runnable() { @Override public void run() { editor.setCurrentLine(newCurrentLine); editor.deactivateStep(); editor.deactivateContinue(); } }); // hit a breakpoint during a step, need to cancel the step. if (requestedStep != null) { runtime.vm().eventRequestManager().deleteEventRequest(requestedStep); requestedStep = null; } // fix canvas update issue // TODO: is this a good solution? resumeOtherThreads(currentThread); paused = true; editor.statusHalted(); } private void vmStepEvent(StepEvent se) { currentThread = se.thread(); //printSourceLocation(currentThread); updateVariableInspector(currentThread); // this is already on the EDT final LineID newCurrentLine = locationToLineID(se.location()); javax.swing.SwingUtilities.invokeLater(new Runnable() { @Override public void run() { editor.setCurrentLine(newCurrentLine); editor.deactivateStep(); editor.deactivateContinue(); } }); // delete the steprequest that triggered this step so new ones can be placed (only one per thread) EventRequestManager mgr = runtime.vm().eventRequestManager(); mgr.deleteEventRequest(se.request()); requestedStep = null; // mark that there is no step request pending paused = true; editor.statusHalted(); // disallow stepping into invisible lines if (!locationIsVisible(se.location())) { // TODO: this leads to stepping, should it run on the EDT? javax.swing.SwingUtilities.invokeLater(new Runnable() { @Override public void run() { stepOutIntoViewOrContinue(); } }); } } /** * Check whether a location corresponds to a code line in the editor. * @param l the location * @return true if the location corresponds to a line in the editor */ protected boolean locationIsVisible(Location l) { return locationToLineID(l) != null; } /** * Step out if this results in a visible location, otherwise continue. */ protected void stepOutIntoViewOrContinue() { try { List<StackFrame> frames = currentThread.frames(); if (frames.size() > 1) { if (locationIsVisible(frames.get(1).location())) { //System.out.println("stepping out to: " + locationToString(frames.get(1).location())); stepOut(); return; } } continueDebug(); } catch (IncompatibleThreadStateException ex) { logitse(ex); } } /** * Check whether a debugging session is running. i.e. the debugger is * connected to a debuggee VM, VMStartEvent has been received and main * class is loaded. * @return true if the debugger is started. */ public synchronized boolean isStarted() { return started && runtime != null && runtime.vm() != null; } /** * Check whether the debugger is paused. i.e. it is currently suspended * at a breakpoint or step. * * @return true if the debugger is paused, false otherwise or if not started * ({@link #isStarted()}) */ public synchronized boolean isPaused() { return isStarted() && paused && currentThread != null && currentThread.isSuspended(); } /** * Check whether the debugger is currently busy. i.e. running (not * suspended). * @return true if the debugger is currently running and not suspended. */ public synchronized boolean isBusy() { return isStarted() && !isPaused(); } /** * Print call stack trace of a thread. Only works on suspended threads. * @param t suspended thread to print stack trace of */ protected void printStackTrace(ThreadReference t) { if (!t.isSuspended()) { return; } try { System.out.println("stack trace for thread " + t.name() + ":"); int i = 0; for (StackFrame f : t.frames()) { // Location l = f.location(); System.out.println(i++ + ": " + f.toString()); } } catch (IncompatibleThreadStateException ex) { logitse(ex); } } /** * Resume all other threads except the one given as parameter. Useful * e.g. to just keep the thread suspended a breakpoint occurred in. * @param t the thread not to resume */ protected void resumeOtherThreads(ThreadReference t) { if (!isStarted()) { return; } for (ThreadReference other : vm().allThreads()) { if (!other.equals(t) && other.isSuspended()) { other.resume(); } } } /** * Print info about all current threads. Includes name, status, * isSuspended, isAtBreakpoint. */ public synchronized void printThreads() { if (!isPaused()) { return; } System.out.println("threads:"); for (ThreadReference t : vm().allThreads()) { printThread(t); } } /** * Print info about a thread. Includes name, status, isSuspended, * isAtBreakpoint. * @param t the thread to print info about */ protected void printThread(ThreadReference t) { System.out.println(t.name()); System.out.println(" is suspended: " + t.isSuspended()); System.out.println(" is at breakpoint: " + t.isAtBreakpoint()); System.out.println(" status: " + threadStatusToString(t.status())); } /** * Convert a status code returned by {@link ThreadReference#status() } * to a human readable form. * @param status {@link ThreadReference#THREAD_STATUS_MONITOR}, * {@link ThreadReference#THREAD_STATUS_NOT_STARTED}, * {@link ThreadReference#THREAD_STATUS_RUNNING}, * {@link ThreadReference#THREAD_STATUS_SLEEPING}, * {@link ThreadReference#THREAD_STATUS_UNKNOWN}, * {@link ThreadReference#THREAD_STATUS_WAIT} or * {@link ThreadReference#THREAD_STATUS_ZOMBIE} * @return String containing readable status code. */ protected String threadStatusToString(int status) { switch (status) { case ThreadReference.THREAD_STATUS_MONITOR: return "THREAD_STATUS_MONITOR"; case ThreadReference.THREAD_STATUS_NOT_STARTED: return "THREAD_STATUS_NOT_STARTED"; case ThreadReference.THREAD_STATUS_RUNNING: return "THREAD_STATUS_RUNNING"; case ThreadReference.THREAD_STATUS_SLEEPING: return "THREAD_STATUS_SLEEPING"; case ThreadReference.THREAD_STATUS_UNKNOWN: return "THREAD_STATUS_UNKNOWN"; case ThreadReference.THREAD_STATUS_WAIT: return "THREAD_STATUS_WAIT"; case ThreadReference.THREAD_STATUS_ZOMBIE: return "THREAD_STATUS_ZOMBIE"; default: return ""; } } /** * Print local variables on a suspended thread. Takes the topmost stack * frame and lists all local variables and their values. * * @param t suspended thread */ protected void printLocalVariables(ThreadReference t) { if (!t.isSuspended()) { return; } try { if (t.frameCount() == 0) { System.out.println("call stack empty"); } else { StackFrame sf = t.frame(0); List<LocalVariable> locals = sf.visibleVariables(); if (locals.isEmpty()) { System.out.println("no local variables"); return; } for (LocalVariable lv : locals) { System.out.println(lv.typeName() + " " + lv.name() + " = " + sf.getValue(lv)); } } } catch (IncompatibleThreadStateException ex) { logitse(ex); } catch (AbsentInformationException ex) { log("local variable information not available"); } } /** * Update variable inspector window. Displays local variables and this * fields. * @param t suspended thread to retrieve locals and this */ protected void updateVariableInspector(ThreadReference t) { if (!t.isSuspended()) { return; } try { if (t.frameCount() == 0) { // TODO: needs to be handled in a better way: log("call stack empty"); } else { final VariableInspector vi = editor.variableInspector(); // first get data final List<DefaultMutableTreeNode> stackTrace = getStackTrace(t); final List<VariableNode> locals = getLocals(t, 0); final String currentLocation = currentLocation(t); final List<VariableNode> thisFields = getThisFields(t, 0, true); final List<VariableNode> declaredThisFields = getThisFields(t, 0, false); final String thisName = thisName(t); // now update asynchronously javax.swing.SwingUtilities.invokeLater(new Runnable() { @Override public void run() { //System.out.println("updating vi. from EDT: " + javax.swing.SwingUtilities.isEventDispatchThread()); vi.updateCallStack(stackTrace, "Call Stack"); vi.updateLocals(locals, "Locals at " + currentLocation); vi.updateThisFields(thisFields, "Class " + thisName); vi.updateDeclaredThisFields(declaredThisFields, "Class " + thisName); vi.unlock(); // need to do this before rebuilding, otherwise we get these ... dots in the labels vi.rebuild(); } }); } } catch (IncompatibleThreadStateException ex) { logitse(ex); } } /** * Get the class name of the current this object in a suspended thread. * @param t a suspended thread * @return the class name of this */ protected String thisName(ThreadReference t) { try { if (!t.isSuspended() || t.frameCount() == 0) { return ""; } ObjectReference ref = t.frame(0).thisObject(); return ref == null ? "" : ref.referenceType().name(); } catch (IncompatibleThreadStateException ex) { logitse(ex); return ""; } } /** * Get a description of the current location in a suspended thread. * Format: class.method:translated_line_number * @param t a suspended thread * @return descriptive string for the given location */ protected String currentLocation(ThreadReference t) { try { if (!t.isSuspended() || t.frameCount() == 0) { return ""; } return locationToString(t.frame(0).location()); } catch (IncompatibleThreadStateException ex) { logitse(ex); return ""; } } /** * Get a string describing a location. * Format: class.method:translated_line_number * @param loc a location * @return descriptive string for the given location */ protected String locationToString(Location loc) { LineID line = locationToLineID(loc); int lineNumber = (line != null) ? (line.lineIdx() + 1) : loc.lineNumber(); return loc.declaringType().name() + "." + loc.method().name() + ":" + lineNumber; } /** * Compile a list of current locals usable for insertion into a * {@link JTree}. Recursively resolves object references. * @param t the suspended thread to get locals for * @param depth how deep to resolve nested object references. 0 will not * resolve nested objects. * @return the list of current locals */ protected List<VariableNode> getLocals(ThreadReference t, int depth) { //System.out.println("getting locals"); List<VariableNode> vars = new ArrayList<>(); try { if (t.frameCount() > 0) { StackFrame sf = t.frame(0); for (LocalVariable lv : sf.visibleVariables()) { //System.out.println("local var: " + lv.name()); Value val = sf.getValue(lv); VariableNode var = new LocalVariableNode(lv.name(), lv.typeName(), val, lv, sf); if (depth > 0) { var.addChildren(getFields(val, depth - 1, true)); } vars.add(var); } } } catch (IncompatibleThreadStateException ex) { logitse(ex); } catch (AbsentInformationException ex) { loge("local variable information not available", ex); } return vars; } /** * Compile a list of fields in the current this object usable for insertion |
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