本文整理汇总了C++中SnapshotIterator::spewBailingFrom方法的典型用法代码示例。如果您正苦于以下问题：C++ SnapshotIterator::spewBailingFrom方法的具体用法？C++ SnapshotIterator::spewBailingFrom怎么用？C++ SnapshotIterator::spewBailingFrom使用的例子？那么, 这里精选的方法代码示例或许可以为您提供帮助。您也可以进一步了解该方法所在类SnapshotIterator的用法示例。
在下文中一共展示了SnapshotIterator::spewBailingFrom方法的1个代码示例，这些例子默认根据受欢迎程度排序。您可以为喜欢或者感觉有用的代码点赞，您的评价将有助于系统推荐出更棒的C++代码示例。
示例1: script
void
StackFrame::initFromBailout(JSContext *cx, SnapshotIterator &iter)
{
AutoAssertNoGC nogc;
uint32 exprStackSlots = iter.slots() - script()->nfixed;
#ifdef TRACK_SNAPSHOTS
iter.spewBailingFrom();
#endif
IonSpew(IonSpew_Bailouts, " expr stack slots %u, is function frame %u",
exprStackSlots, isFunctionFrame());
if (iter.bailoutKind() == Bailout_ArgumentCheck) {
// Temporary hack -- skip the (unused) scopeChain, because it could be
// bogus (we can fail before the scope chain slot is set). Strip the
// hasScopeChain flag and we'll check this later to run prologue().
iter.skip();
flags_ &= ~StackFrame::HAS_SCOPECHAIN;
} else {
Value v = iter.read();
if (v.isObject()) {
scopeChain_ = &v.toObject();
flags_ |= StackFrame::HAS_SCOPECHAIN;
if (isFunctionFrame() && fun()->isHeavyweight())
flags_ |= StackFrame::HAS_CALL_OBJ;
} else {
JS_ASSERT(v.isUndefined());
}
}
// Assume that all new stack frames have had their entry flag set if
// profiling has been turned on. This will be corrected if necessary
// elsewhere.
if (cx->runtime->spsProfiler.enabled())
setPushedSPSFrame();
if (isFunctionFrame()) {
Value thisv = iter.read();
formals()[-1] = thisv;
// The new |this| must have already been constructed prior to an Ion
// constructor running.
if (isConstructing())
JS_ASSERT(!thisv.isPrimitive());
JS_ASSERT(iter.slots() >= CountArgSlots(fun()));
IonSpew(IonSpew_Bailouts, " frame slots %u, nargs %u, nfixed %u",
iter.slots(), fun()->nargs, script()->nfixed);
for (uint32 i = 0; i < fun()->nargs; i++) {
Value arg = iter.read();
formals()[i] = arg;
}
}
exprStackSlots -= CountArgSlots(maybeFun());
for (uint32 i = 0; i < script()->nfixed; i++) {
Value slot = iter.read();
slots()[i] = slot;
}
IonSpew(IonSpew_Bailouts, " pushing %u expression stack slots", exprStackSlots);
FrameRegs ®s = cx->regs();
for (uint32 i = 0; i < exprStackSlots; i++) {
Value v;
// If coming from an invalidation bailout, and this is the topmost
// value, and a value override has been specified, don't read from the
// iterator. Otherwise, we risk using a garbage value.
if (!iter.moreFrames() && i == exprStackSlots - 1 && cx->runtime->hasIonReturnOverride())
v = iter.skip();
else
v = iter.read();
*regs.sp++ = v;
}
unsigned pcOff = iter.pcOffset();
regs.pc = script()->code + pcOff;
if (iter.resumeAfter())
regs.pc = GetNextPc(regs.pc);
IonSpew(IonSpew_Bailouts, " new PC is offset %u within script %p (line %d)",
pcOff, (void *)script(), PCToLineNumber(script(), regs.pc));
JS_ASSERT(exprStackSlots == js_ReconstructStackDepth(cx, script(), regs.pc));
}