bool RenamedFuncDict::rename(const StringData* old, const StringData* n3w) { assert(isFunctionRenameable(old) || isFunctionRenameable(n3w)); NamedEntity *oldNe = const_cast<NamedEntity *>(Unit::GetNamedEntity(old)); NamedEntity *newNe = const_cast<NamedEntity *>(Unit::GetNamedEntity(n3w)); Func* func = Unit::lookupFunc(oldNe); if (!func) { // It's the caller's responsibility to ensure that the old function // exists. not_reached(); } if (!(func->attrs() & AttrDynamicInvoke)) { // When EvalJitEnableRenameFunction is false, the translator may wire // non-DynamicInvoke Func*'s into the TC. Don't rename functions. if (RuntimeOption::EvalJit && !RuntimeOption::EvalJitEnableRenameFunction) { raise_error("You must explicitly enable fb_rename_function in the JIT " "(-v Eval.JitEnableRenameFunction=true)"); } } Func *fnew = Unit::lookupFunc(newNe); if (fnew && fnew != func) { // To match hphpc, we silently ignore functions defined in user code that // have the same name as a function defined in a separable extension if (!fnew->isAllowOverride()) { raise_error("Function already defined: %s", n3w->data()); } else { return false; } } oldNe->setCachedFunc(nullptr); if (UNLIKELY(newNe->m_cachedFuncOffset == 0)) { Transl::TargetCache::allocFixedFunction(newNe, false); } newNe->setCachedFunc(func); if (RuntimeOption::EvalJit) { Transl::TargetCache::invalidateForRename(old); } return true; }
void rename_function(const String& old_name, const String& new_name) { auto const old = old_name.get(); auto const n3w = new_name.get(); auto const oldNe = const_cast<NamedEntity*>(Unit::GetNamedEntity(old)); auto const newNe = const_cast<NamedEntity*>(Unit::GetNamedEntity(n3w)); Func* func = Unit::lookupFunc(oldNe); if (!func) { // It's the caller's responsibility to ensure that the old function // exists. not_reached(); } if (!(func->attrs() & AttrDynamicInvoke)) { // When EvalJitEnableRenameFunction is false, the translator may wire // non-DynamicInvoke Func*'s into the TC. Don't rename functions. if (RuntimeOption::EvalJit && !RuntimeOption::EvalJitEnableRenameFunction) { raise_error("You must explicitly enable fb_rename_function in the JIT " "(-v Eval.JitEnableRenameFunction=true)"); } } Func *fnew = Unit::lookupFunc(newNe); if (fnew && fnew != func) { // To match hphpc, we silently ignore functions defined in user code that // have the same name as a function defined in a separable extension if (!fnew->isAllowOverride()) { raise_error("Function already defined: %s", n3w->data()); } return; } oldNe->setCachedFunc(nullptr); newNe->m_cachedFunc.bind(); newNe->setCachedFunc(func); if (RuntimeOption::EvalJit) { JIT::invalidateForRenameFunction(old); } }