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Copy pathCodeOrigin.cpp
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197 lines (162 loc) · 5.82 KB
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/*
* Copyright (C) 2012, 2013 Apple Inc. All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
*
* THIS SOFTWARE IS PROVIDED BY APPLE INC. ``AS IS'' AND ANY
* EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
* PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL APPLE INC. OR
* CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
* EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
* PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
* PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY
* OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
* OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*/
#include "config.h"
#include "CodeOrigin.h"
#include "CallFrame.h"
#include "CodeBlock.h"
#include "Executable.h"
#include "JSCInlines.h"
namespace JSC {
unsigned CodeOrigin::inlineDepthForCallFrame(InlineCallFrame* inlineCallFrame)
{
unsigned result = 1;
for (InlineCallFrame* current = inlineCallFrame; current; current = current->caller.inlineCallFrame)
result++;
return result;
}
unsigned CodeOrigin::inlineDepth() const
{
return inlineDepthForCallFrame(inlineCallFrame);
}
bool CodeOrigin::isApproximatelyEqualTo(const CodeOrigin& other) const
{
CodeOrigin a = *this;
CodeOrigin b = other;
if (!a.isSet())
return !b.isSet();
if (!b.isSet())
return false;
if (a.isHashTableDeletedValue())
return b.isHashTableDeletedValue();
if (b.isHashTableDeletedValue())
return false;
for (;;) {
ASSERT(a.isSet());
ASSERT(b.isSet());
if (a.bytecodeIndex != b.bytecodeIndex)
return false;
if ((!!a.inlineCallFrame) != (!!b.inlineCallFrame))
return false;
if (!a.inlineCallFrame)
return true;
if (a.inlineCallFrame->executable != b.inlineCallFrame->executable)
return false;
a = a.inlineCallFrame->caller;
b = b.inlineCallFrame->caller;
}
}
unsigned CodeOrigin::approximateHash() const
{
if (!isSet())
return 0;
if (isHashTableDeletedValue())
return 1;
unsigned result = 2;
CodeOrigin codeOrigin = *this;
for (;;) {
result += codeOrigin.bytecodeIndex;
if (!codeOrigin.inlineCallFrame)
return result;
result += WTF::PtrHash<JSCell*>::hash(codeOrigin.inlineCallFrame->executable.get());
codeOrigin = codeOrigin.inlineCallFrame->caller;
}
}
Vector<CodeOrigin> CodeOrigin::inlineStack() const
{
Vector<CodeOrigin> result(inlineDepth());
result.last() = *this;
unsigned index = result.size() - 2;
for (InlineCallFrame* current = inlineCallFrame; current; current = current->caller.inlineCallFrame)
result[index--] = current->caller;
RELEASE_ASSERT(!result[0].inlineCallFrame);
return result;
}
void CodeOrigin::dump(PrintStream& out) const
{
if (!isSet()) {
out.print("<none>");
return;
}
Vector<CodeOrigin> stack = inlineStack();
for (unsigned i = 0; i < stack.size(); ++i) {
if (i)
out.print(" --> ");
if (InlineCallFrame* frame = stack[i].inlineCallFrame) {
out.print(frame->briefFunctionInformation(), ":<", RawPointer(frame->executable.get()), "> ");
if (frame->isClosureCall)
out.print("(closure) ");
}
out.print("bc#", stack[i].bytecodeIndex);
}
}
void CodeOrigin::dumpInContext(PrintStream& out, DumpContext*) const
{
dump(out);
}
JSFunction* InlineCallFrame::calleeForCallFrame(ExecState* exec) const
{
return jsCast<JSFunction*>(calleeRecovery.recover(exec));
}
CodeBlockHash InlineCallFrame::hash() const
{
return jsCast<FunctionExecutable*>(executable.get())->codeBlockFor(
specializationKind())->hash();
}
CString InlineCallFrame::hashAsStringIfPossible() const
{
return jsCast<FunctionExecutable*>(executable.get())->codeBlockFor(
specializationKind())->hashAsStringIfPossible();
}
CString InlineCallFrame::inferredName() const
{
return jsCast<FunctionExecutable*>(executable.get())->inferredName().utf8();
}
CodeBlock* InlineCallFrame::baselineCodeBlock() const
{
return jsCast<FunctionExecutable*>(executable.get())->baselineCodeBlockFor(specializationKind());
}
void InlineCallFrame::dumpBriefFunctionInformation(PrintStream& out) const
{
out.print(inferredName(), "#", hashAsStringIfPossible());
}
void InlineCallFrame::dumpInContext(PrintStream& out, DumpContext* context) const
{
out.print(briefFunctionInformation(), ":<", RawPointer(executable.get()));
if (executable->isStrictMode())
out.print(" (StrictMode)");
out.print(", bc#", caller.bytecodeIndex, ", ", specializationKind());
if (isClosureCall)
out.print(", closure call");
else
out.print(", known callee: ", inContext(calleeRecovery.constant(), context));
out.print(", numArgs+this = ", arguments.size());
out.print(", stack < loc", VirtualRegister(stackOffset).toLocal());
out.print(">");
}
void InlineCallFrame::dump(PrintStream& out) const
{
dumpInContext(out, 0);
}
} // namespace JSC