Object c_GenVectorWaitHandle::ti_create(const Variant& dependencies) {
if (UNLIKELY(!dependencies.isObject() ||
dependencies.getObjectData()->getCollectionType() !=
Collection::VectorType)) {
Object e(SystemLib::AllocInvalidArgumentExceptionObject(
"Expected dependencies to be an instance of Vector"));
throw e;
}
assert(dependencies.getObjectData()->instanceof(c_Vector::classof()));
auto deps = p_Vector::attach(c_Vector::Clone(dependencies.getObjectData()));
for (int64_t iter_pos = 0; iter_pos < deps->size(); ++iter_pos) {
Cell* current = deps->at(iter_pos);
if (UNLIKELY(!c_WaitHandle::fromCell(current))) {
Object e(SystemLib::AllocInvalidArgumentExceptionObject(
"Expected dependencies to be a vector of WaitHandle instances"));
throw e;
}
}
Object exception;
for (int64_t iter_pos = 0; iter_pos < deps->size(); ++iter_pos) {
Cell* current = tvAssertCell(deps->at(iter_pos));
assert(current->m_type == KindOfObject);
assert(current->m_data.pobj->instanceof(c_WaitHandle::classof()));
auto child = static_cast<c_WaitHandle*>(current->m_data.pobj);
if (child->isSucceeded()) {
cellSet(child->getResult(), *current);
} else if (child->isFailed()) {
putException(exception, child->getException());
} else {
assert(child->instanceof(c_WaitableWaitHandle::classof()));
auto child_wh = static_cast<c_WaitableWaitHandle*>(child);
p_GenVectorWaitHandle my_wh = NEWOBJ(c_GenVectorWaitHandle)();
my_wh->initialize(exception, deps.get(), iter_pos, child_wh);
AsioSession* session = AsioSession::Get();
if (UNLIKELY(session->hasOnGenVectorCreateCallback())) {
session->onGenVectorCreate(my_wh.get(), dependencies);
}
return my_wh;
}
}
if (exception.isNull()) {
return c_StaticWaitHandle::CreateSucceeded(
make_tv<KindOfObject>(deps.get()));
} else {
return c_StaticWaitHandle::CreateFailed(exception.get());
}
}
ArrayData* StructArray::SetStr(
ArrayData* ad,
StringData* k,
Cell v,
bool copy
) {
auto structArray = asStructArray(ad);
auto shape = structArray->shape();
auto result = structArray;
auto offset = shape->offsetFor(k);
bool isNewProperty = offset == PropertyTable::kInvalidOffset;
auto convertToMixedAndAdd = [&]() {
auto mixed = copy ? ToMixedCopy(structArray) : ToMixed(structArray);
return mixed->addValNoAsserts(k, v);
};
if (isNewProperty) {
StringData* staticKey;
// We don't support adding non-static strings yet.
if (k->isStatic()) {
staticKey = k;
} else {
staticKey = lookupStaticString(k);
if (!staticKey) return convertToMixedAndAdd();
}
auto newShape = shape->transition(staticKey);
if (!newShape) return convertToMixedAndAdd();
result = copy ? CopyAndResizeIfNeeded(structArray, newShape)
: ResizeIfNeeded(structArray, newShape);
offset = result->shape()->offsetFor(staticKey);
assert(offset != PropertyTable::kInvalidOffset);
TypedValue* dst = &result->data()[offset];
// TODO(#3888164): we should restructure things so we don't have to
// check KindOfUninit here.
if (UNLIKELY(v.m_type == KindOfUninit)) v = make_tv<KindOfNull>();
cellDup(v, *dst);
return result;
}
if (copy) {
result = asStructArray(Copy(structArray));
}
assert(offset != PropertyTable::kInvalidOffset);
TypedValue* dst = &result->data()[offset];
if (UNLIKELY(v.m_type == KindOfUninit)) v = make_tv<KindOfNull>();
cellSet(v, *tvToCell(dst));
return result;
}
void c_GenVectorWaitHandle::onUnblocked() {
assert(getState() == STATE_BLOCKED);
for (; m_iterPos < m_deps->size(); ++m_iterPos) {
Cell* current = tvAssertCell(m_deps->at(m_iterPos));
assert(current->m_type == KindOfObject);
assert(current->m_data.pobj->instanceof(c_WaitHandle::classof()));
auto child = static_cast<c_WaitHandle*>(current->m_data.pobj);
if (child->isSucceeded()) {
cellSet(child->getResult(), *current);
} else if (child->isFailed()) {
putException(m_exception, child->getException());
} else {
assert(child->instanceof(c_WaitableWaitHandle::classof()));
auto child_wh = static_cast<c_WaitableWaitHandle*>(child);
try {
if (isInContext()) {
child_wh->enterContext(getContextIdx());
}
detectCycle(child_wh);
blockOn(child_wh);
return;
} catch (const Object& cycle_exception) {
putException(m_exception, cycle_exception.get());
}
}
}
auto const parentChain = getFirstParent();
if (m_exception.isNull()) {
setState(STATE_SUCCEEDED);
tvWriteObject(m_deps.get(), &m_resultOrException);
} else {
setState(STATE_FAILED);
tvWriteObject(m_exception.get(), &m_resultOrException);
m_exception = nullptr;
}
m_deps = nullptr;
UnblockChain(parentChain);
}
void HHVM_FUNCTION(set_frame_metadata, const Variant& metadata) {
VMRegAnchor _;
auto fp = vmfp();
if (fp && fp->skipFrame()) fp = g_context->getPrevVMState(fp);
if (UNLIKELY(!fp)) return;
if (LIKELY(!(fp->func()->attrs() & AttrMayUseVV)) ||
LIKELY(!fp->hasVarEnv())) {
auto const local = fp->func()->lookupVarId(s_86metadata.get());
if (LIKELY(local != kInvalidId)) {
cellSet(*metadata.asCell(), *tvAssertCell(frame_local(fp, local)));
} else {
SystemLib::throwInvalidArgumentExceptionObject(
"Unsupported dynamic call of set_frame_metadata()");
}
} else {
fp->getVarEnv()->set(s_86metadata.get(), metadata.asTypedValue());
}
}
void c_GenMapWaitHandle::onUnblocked() {
for (;
m_deps->iter_valid(m_iterPos);
m_iterPos = m_deps->iter_next(m_iterPos)) {
Cell* current = tvAssertCell(m_deps->iter_value(m_iterPos));
assert(current->m_type == KindOfObject);
assert(current->m_data.pobj->instanceof(c_WaitHandle::classof()));
auto child = static_cast<c_WaitHandle*>(current->m_data.pobj);
if (child->isSucceeded()) {
cellSet(child->getResult(), *current);
} else if (child->isFailed()) {
putException(m_exception, child->getException());
} else {
assert(child->instanceof(c_WaitHandle::classof()));
auto child_wh = static_cast<c_WaitableWaitHandle*>(child);
try {
if (isInContext()) {
child_wh->enterContext(getContextIdx());
}
detectCycle(child_wh);
blockOn(child_wh);
return;
} catch (const Object& cycle_exception) {
putException(m_exception, cycle_exception.get());
}
}
}
if (m_exception.isNull()) {
setResult(make_tv<KindOfObject>(m_deps.get()));
m_deps = nullptr;
} else {
setException(m_exception.get());
m_exception = nullptr;
m_deps = nullptr;
}
}
void Generator::done(TypedValue tv) {
assert(getState() == State::Running);
cellSetNull(m_key);
cellSet(*tvToCell(&tv), m_value);
setState(State::Done);
}
ArrayData*
GlobalsArray::SetStr(ArrayData* ad, StringData* k, Cell v, bool /*copy*/) {
auto a = asGlobals(ad);
cellSet(v, *tvToCell(a->m_tab->lookupAdd(k)));
return a;
}
void tearDownFrame(ActRec*& fp, Stack& stack, PC& pc) {
auto const func = fp->m_func;
auto const curOp = *reinterpret_cast<const Op*>(pc);
auto const unwindingReturningFrame =
curOp == OpRetC || curOp == OpRetV ||
curOp == OpCreateCont || curOp == OpAsyncSuspend;
auto const prevFp = fp->arGetSfp();
auto const soff = fp->m_soff;
FTRACE(1, "tearDownFrame: {} ({})\n fp {} prevFp {}\n",
func->fullName()->data(),
func->unit()->filepath()->data(),
implicit_cast<void*>(fp),
implicit_cast<void*>(prevFp));
// When throwing from a constructor, we normally want to avoid running the
// destructor on an object that hasn't been fully constructed yet. But if
// we're unwinding through the constructor's RetC, the constructor has
// logically finished and we're unwinding for some internal reason (timeout
// or user profiler, most likely). More importantly, fp->m_this may have
// already been destructed and/or overwritten due to sharing space with
// fp->m_r.
if (!unwindingReturningFrame && fp->isFromFPushCtor() && fp->hasThis()) {
fp->getThis()->setNoDestruct();
}
/*
* If we're unwinding through a frame that's returning, it's only
* possible that its locals have already been decref'd.
*
* Here's why:
*
* - If a destructor for any of these things throws a php
* exception, it's swallowed at the dtor boundary and we keep
* running php.
*
* - If the destructor for any of these things throws a fatal,
* it's swallowed, and we set surprise flags to throw a fatal
* from now on.
*
* - If the second case happened and we have to run another
* destructor, its enter hook will throw, but it will be
* swallowed again.
*
* - Finally, the exit hook for the returning function can
* throw, but this happens last so everything is destructed.
*
*/
if (!unwindingReturningFrame) {
try {
// Note that we must convert locals and the $this to
// uninit/zero during unwind. This is because a backtrace
// from another destructing object during this unwind may try
// to read them.
frame_free_locals_unwind(fp, func->numLocals());
} catch (...) {}
}
if (LIKELY(!fp->resumed())) {
// Free ActRec.
stack.ndiscard(func->numSlotsInFrame());
stack.discardAR();
} else if (fp->func()->isAsync()) {
// Do nothing. AsyncFunctionWaitHandle will handle the exception.
} else if (fp->func()->isGenerator()) {
// Mark the generator as finished and clear its m_value.
auto cont = frame_continuation(fp);
cont->setDone();
cellSet(make_tv<KindOfNull>(), cont->m_value);
} else {
not_reached();
}
/*
* At the final ActRec in this nesting level. We don't need to set
* pc and fp since we're about to re-throw the exception. And we
* don't want to dereference prefFp since we just popped it.
*/
if (prevFp == fp) return;
assert(stack.isValidAddress(reinterpret_cast<uintptr_t>(prevFp)) ||
prevFp->resumed());
auto const prevOff = soff + prevFp->m_func->base();
pc = prevFp->m_func->unit()->at(prevOff);
fp = prevFp;
}
void c_Continuation::suspend(Offset offset, const Cell& value) {
assert(actRec()->func()->contains(offset));
m_offset = offset;
cellSet(make_tv<KindOfInt64>(++m_index), m_key);
cellSet(value, m_value);
}
