bool EventHook::RunInterceptHandler(ActRec* ar) {
const Func* func = ar->m_func;
if (LIKELY(func->maybeIntercepted() == 0)) return true;
// Intercept only original generator / async function calls, not resumption.
if (ar->inGenerator()) return true;
Variant *h = get_intercept_handler(func->fullNameRef(),
&func->maybeIntercepted());
if (!h) return true;
JIT::VMRegAnchor _;
PC savePc = g_context->m_pc;
Variant doneFlag = true;
Variant called_on;
if (ar->hasThis()) {
called_on = Variant(ar->getThis());
} else if (ar->hasClass()) {
// For static methods, give handler the name of called class
called_on = Variant(const_cast<StringData*>(ar->getClass()->name()));
}
Variant intArgs =
PackedArrayInit(5)
.append(ar->m_func->fullNameRef())
.append(called_on)
.append(get_frame_args_with_ref(ar))
.append(h->asCArrRef()[1])
.appendRef(doneFlag)
.toArray();
Variant ret = vm_call_user_func(h->asCArrRef()[0], intArgs);
if (doneFlag.toBoolean()) {
Offset pcOff;
ActRec* outer = g_context->getPrevVMState(ar, &pcOff);
frame_free_locals_inl_no_hook<true>(ar, ar->m_func->numLocals());
Stack& stack = g_context->getStack();
stack.top() = (Cell*)(ar + 1);
cellDup(*ret.asCell(), *stack.allocTV());
g_context->m_fp = outer;
g_context->m_pc = outer ? outer->m_func->unit()->at(pcOff) : nullptr;
return false;
}
g_context->m_fp = ar;
g_context->m_pc = savePc;
return true;
}
bool EventHook::RunInterceptHandler(ActRec* ar) {
const Func* func = ar->m_func;
if (LIKELY(func->maybeIntercepted() == 0)) return true;
Variant *h = get_intercept_handler(func->fullNameRef(),
&func->maybeIntercepted());
if (!h) return true;
Transl::VMRegAnchor _;
PC savePc = g_vmContext->m_pc;
Variant doneFlag = true;
Variant called_on;
if (ar->hasThis()) {
called_on = Variant(ar->getThis());
} else if (ar->hasClass()) {
// For static methods, give handler the name of called class
called_on = Variant(const_cast<StringData*>(ar->getClass()->name()));
}
Array intArgs =
CREATE_VECTOR5(ar->m_func->fullNameRef(),
called_on,
get_frame_args_with_ref(ar),
h->asCArrRef()[1],
ref(doneFlag));
Variant ret = vm_call_user_func(h->asCArrRef()[0], intArgs);
if (doneFlag.toBoolean()) {
Offset pcOff;
ActRec* outer = g_vmContext->getPrevVMState(ar, &pcOff);
assert(outer);
frame_free_locals_inl_no_hook<true>(ar, ar->m_func->numLocals());
Stack& stack = g_vmContext->getStack();
stack.top() = (Cell*)(ar + 1);
tvDup(ret.asTypedValue(), stack.allocTV());
g_vmContext->m_fp = outer;
g_vmContext->m_pc = outer->m_func->unit()->at(pcOff);
return false;
}
g_vmContext->m_fp = ar;
g_vmContext->m_pc = savePc;
return true;
}
bool EventHook::RunInterceptHandler(ActRec* ar) {
const Func* func = ar->m_func;
if (LIKELY(func->maybeIntercepted() == 0)) return true;
Variant *h = get_intercept_handler(func->fullNameRef(),
&func->maybeIntercepted());
if (!h) return true;
Transl::VMRegAnchor _;
PC savePc = g_vmContext->m_pc;
Offset pcOff;
ActRec* outer = g_vmContext->getPrevVMState(ar, &pcOff);
assert(outer);
g_vmContext->m_fp = outer;
g_vmContext->m_pc = outer->m_func->unit()->at(pcOff);
try {
Variant doneFlag = true;
Variant obj = ar->hasThis() ?
Variant(Object(ar->getThis())) : uninit_null();
Array intArgs =
CREATE_VECTOR5(ar->m_func->fullNameRef(),
obj,
get_frame_args_with_ref(ar),
h->asCArrRef()[1],
ref(doneFlag));
Variant ret = vm_call_user_func(h->asCArrRef()[0], intArgs);
if (doneFlag.toBoolean()) {
frame_free_locals_inl_no_hook(ar, ar->m_func->numLocals());
Stack& stack = g_vmContext->getStack();
stack.top() = (Cell*)(ar + 1);
tvDup(ret.asTypedValue(), stack.allocTV());
return false;
}
g_vmContext->m_fp = ar;
g_vmContext->m_pc = savePc;
} catch (...) {
g_vmContext->m_fp = ar;
g_vmContext->m_pc = savePc;
g_vmContext->m_stack.top() = Stack::frameStackBase(ar);
throw;
}
return true;
}
bool EventHook::RunInterceptHandler(ActRec* ar) {
const Func* func = ar->func();
if (LIKELY(func->maybeIntercepted() == 0)) return true;
// Intercept only original generator / async function calls, not resumption.
if (ar->resumed()) return true;
Variant* h = get_intercept_handler(func->fullNameStr(),
&func->maybeIntercepted());
if (!h) return true;
/*
* In production mode, only functions that we have assumed can be
* intercepted during static analysis should actually be
* intercepted.
*/
if (RuntimeOption::RepoAuthoritative &&
!RuntimeOption::EvalJitEnableRenameFunction) {
if (!(func->attrs() & AttrInterceptable)) {
raise_error("fb_intercept was used on a non-interceptable function (%s) "
"in RepoAuthoritative mode", func->fullName()->data());
}
}
VMRegAnchor _;
PC savePc = vmpc();
Variant doneFlag = true;
Variant called_on;
if (ar->hasThis()) {
called_on = Variant(ar->getThis());
} else if (ar->hasClass()) {
// For static methods, give handler the name of called class
called_on = Variant(const_cast<StringData*>(ar->getClass()->name()));
}
Variant intArgs =
PackedArrayInit(5)
.append(VarNR(ar->func()->fullName()))
.append(called_on)
.append(get_frame_args_with_ref(ar))
.append(h->asCArrRef()[1])
.appendRef(doneFlag)
.toArray();
Variant ret = vm_call_user_func(h->asCArrRef()[0], intArgs);
if (doneFlag.toBoolean()) {
Offset pcOff;
ActRec* outer = g_context->getPrevVMState(ar, &pcOff);
frame_free_locals_inl_no_hook<true>(ar, ar->func()->numLocals());
Stack& stack = vmStack();
stack.top() = (Cell*)(ar + 1);
cellDup(*ret.asCell(), *stack.allocTV());
vmfp() = outer;
vmpc() = outer ? outer->func()->unit()->at(pcOff) : nullptr;
return false;
}
vmfp() = ar;
vmpc() = savePc;
return true;
}
