bytecode/TrackedReferences.cpp

   1 /*
   2  * Copyright (C) 2015 Apple Inc. All rights reserved.
   3  *
   4  * Redistribution and use in source and binary forms, with or without
   5  * modification, are permitted provided that the following conditions
   6  * are met:
   7  * 1. Redistributions of source code must retain the above copyright
   8  *    notice, this list of conditions and the following disclaimer.
   9  * 2. Redistributions in binary form must reproduce the above copyright
  10  *    notice, this list of conditions and the following disclaimer in the
  11  *    documentation and/or other materials provided with the distribution.
  12  *
  13  * THIS SOFTWARE IS PROVIDED BY APPLE INC. ``AS IS'' AND ANY
  14  * EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
  15  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
  16  * PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL APPLE INC. OR
  17  * CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
  18  * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
  19  * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
  20  * PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY
  21  * OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
  22  * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
  23  * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
  24  */
  25
  26 #include "config.h"
  27 #include "TrackedReferences.h"
  28
  29 #include "JSCInlines.h"
  30 #include <wtf/CommaPrinter.h>
  31
  32 namespace JSC {
  33
  34 TrackedReferences::TrackedReferences()
  35 {
  36 }
  37
  38 TrackedReferences::~TrackedReferences()
  39 {
  40 }
  41
  42 void TrackedReferences::add(JSCell* cell)
  43 {
  44     if (cell)
  45         m_references.add(cell);
  46 }
  47
  48 void TrackedReferences::add(JSValue value)
  49 {
  50     if (value.isCell())
  51         add(value.asCell());
  52 }
  53
  54 void TrackedReferences::check(JSCell* cell) const
  55 {
  56     if (!cell)
  57         return;
  58
  59     if (m_references.contains(cell))
  60         return;
  61
  62     dataLog("Found untracked reference: ", RawPointer(cell), "\n");
  63     dataLog("All tracked references: ", *this, "\n");
  64     RELEASE_ASSERT_NOT_REACHED();
  65 }
  66
  67 void TrackedReferences::check(JSValue value) const
  68 {
  69     if (value.isCell())
  70         check(value.asCell());
  71 }
  72
  73 void TrackedReferences::dump(PrintStream& out) const
  74 {
  75     CommaPrinter comma;
  76     for (JSCell* cell : m_references)
  77         out.print(comma, RawPointer(cell));
  78 }
  79
  80 } // namespace JSC
  81