1 //===---- ExecutorProcessControl.cpp -- Executor process control APIs -----===// 2 // 3 // Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions. 4 // See https://llvm.org/LICENSE.txt for license information. 5 // SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception 6 // 7 //===----------------------------------------------------------------------===// 8 9 #include "llvm/ExecutionEngine/Orc/ExecutorProcessControl.h" 10 11 #include "llvm/ExecutionEngine/Orc/Core.h" 12 #include "llvm/ExecutionEngine/Orc/TargetProcess/TargetExecutionUtils.h" 13 #include "llvm/Support/FormatVariadic.h" 14 #include "llvm/Support/Process.h" 15 #include "llvm/TargetParser/Host.h" 16 17 #define DEBUG_TYPE "orc" 18 19 namespace llvm { 20 namespace orc { 21 22 ExecutorProcessControl::MemoryAccess::~MemoryAccess() = default; 23 24 ExecutorProcessControl::~ExecutorProcessControl() = default; 25 26 SelfExecutorProcessControl::SelfExecutorProcessControl( 27 std::shared_ptr<SymbolStringPool> SSP, std::unique_ptr<TaskDispatcher> D, 28 Triple TargetTriple, unsigned PageSize, 29 std::unique_ptr<jitlink::JITLinkMemoryManager> MemMgr) 30 : ExecutorProcessControl(std::move(SSP), std::move(D)) { 31 32 OwnedMemMgr = std::move(MemMgr); 33 if (!OwnedMemMgr) 34 OwnedMemMgr = std::make_unique<jitlink::InProcessMemoryManager>( 35 sys::Process::getPageSizeEstimate()); 36 37 this->TargetTriple = std::move(TargetTriple); 38 this->PageSize = PageSize; 39 this->MemMgr = OwnedMemMgr.get(); 40 this->MemAccess = this; 41 this->JDI = {ExecutorAddr::fromPtr(jitDispatchViaWrapperFunctionManager), 42 ExecutorAddr::fromPtr(this)}; 43 if (this->TargetTriple.isOSBinFormatMachO()) 44 GlobalManglingPrefix = '_'; 45 } 46 47 Expected<std::unique_ptr<SelfExecutorProcessControl>> 48 SelfExecutorProcessControl::Create( 49 std::shared_ptr<SymbolStringPool> SSP, 50 std::unique_ptr<TaskDispatcher> D, 51 std::unique_ptr<jitlink::JITLinkMemoryManager> MemMgr) { 52 53 if (!SSP) 54 SSP = std::make_shared<SymbolStringPool>(); 55 56 if (!D) { 57 #if LLVM_ENABLE_THREADS 58 D = std::make_unique<DynamicThreadPoolTaskDispatcher>(); 59 #else 60 D = std::make_unique<InPlaceTaskDispatcher>(); 61 #endif 62 } 63 64 auto PageSize = sys::Process::getPageSize(); 65 if (!PageSize) 66 return PageSize.takeError(); 67 68 Triple TT(sys::getProcessTriple()); 69 70 return std::make_unique<SelfExecutorProcessControl>( 71 std::move(SSP), std::move(D), std::move(TT), *PageSize, 72 std::move(MemMgr)); 73 } 74 75 Expected<tpctypes::DylibHandle> 76 SelfExecutorProcessControl::loadDylib(const char *DylibPath) { 77 std::string ErrMsg; 78 auto Dylib = sys::DynamicLibrary::getPermanentLibrary(DylibPath, &ErrMsg); 79 if (!Dylib.isValid()) 80 return make_error<StringError>(std::move(ErrMsg), inconvertibleErrorCode()); 81 return ExecutorAddr::fromPtr(Dylib.getOSSpecificHandle()); 82 } 83 84 Expected<std::vector<tpctypes::LookupResult>> 85 SelfExecutorProcessControl::lookupSymbols(ArrayRef<LookupRequest> Request) { 86 std::vector<tpctypes::LookupResult> R; 87 88 for (auto &Elem : Request) { 89 sys::DynamicLibrary Dylib(Elem.Handle.toPtr<void *>()); 90 R.push_back(std::vector<ExecutorAddr>()); 91 for (auto &KV : Elem.Symbols) { 92 auto &Sym = KV.first; 93 std::string Tmp((*Sym).data() + !!GlobalManglingPrefix, 94 (*Sym).size() - !!GlobalManglingPrefix); 95 void *Addr = Dylib.getAddressOfSymbol(Tmp.c_str()); 96 if (!Addr && KV.second == SymbolLookupFlags::RequiredSymbol) { 97 // FIXME: Collect all failing symbols before erroring out. 98 SymbolNameVector MissingSymbols; 99 MissingSymbols.push_back(Sym); 100 return make_error<SymbolsNotFound>(SSP, std::move(MissingSymbols)); 101 } 102 R.back().push_back(ExecutorAddr::fromPtr(Addr)); 103 } 104 } 105 106 return R; 107 } 108 109 Expected<int32_t> 110 SelfExecutorProcessControl::runAsMain(ExecutorAddr MainFnAddr, 111 ArrayRef<std::string> Args) { 112 using MainTy = int (*)(int, char *[]); 113 return orc::runAsMain(MainFnAddr.toPtr<MainTy>(), Args); 114 } 115 116 Expected<int32_t> 117 SelfExecutorProcessControl::runAsVoidFunction(ExecutorAddr VoidFnAddr) { 118 using VoidTy = int (*)(); 119 return orc::runAsVoidFunction(VoidFnAddr.toPtr<VoidTy>()); 120 } 121 122 Expected<int32_t> 123 SelfExecutorProcessControl::runAsIntFunction(ExecutorAddr IntFnAddr, int Arg) { 124 using IntTy = int (*)(int); 125 return orc::runAsIntFunction(IntFnAddr.toPtr<IntTy>(), Arg); 126 } 127 128 void SelfExecutorProcessControl::callWrapperAsync(ExecutorAddr WrapperFnAddr, 129 IncomingWFRHandler SendResult, 130 ArrayRef<char> ArgBuffer) { 131 using WrapperFnTy = 132 shared::CWrapperFunctionResult (*)(const char *Data, size_t Size); 133 auto *WrapperFn = WrapperFnAddr.toPtr<WrapperFnTy>(); 134 SendResult(WrapperFn(ArgBuffer.data(), ArgBuffer.size())); 135 } 136 137 Error SelfExecutorProcessControl::disconnect() { 138 D->shutdown(); 139 return Error::success(); 140 } 141 142 void SelfExecutorProcessControl::writeUInt8sAsync( 143 ArrayRef<tpctypes::UInt8Write> Ws, WriteResultFn OnWriteComplete) { 144 for (auto &W : Ws) 145 *W.Addr.toPtr<uint8_t *>() = W.Value; 146 OnWriteComplete(Error::success()); 147 } 148 149 void SelfExecutorProcessControl::writeUInt16sAsync( 150 ArrayRef<tpctypes::UInt16Write> Ws, WriteResultFn OnWriteComplete) { 151 for (auto &W : Ws) 152 *W.Addr.toPtr<uint16_t *>() = W.Value; 153 OnWriteComplete(Error::success()); 154 } 155 156 void SelfExecutorProcessControl::writeUInt32sAsync( 157 ArrayRef<tpctypes::UInt32Write> Ws, WriteResultFn OnWriteComplete) { 158 for (auto &W : Ws) 159 *W.Addr.toPtr<uint32_t *>() = W.Value; 160 OnWriteComplete(Error::success()); 161 } 162 163 void SelfExecutorProcessControl::writeUInt64sAsync( 164 ArrayRef<tpctypes::UInt64Write> Ws, WriteResultFn OnWriteComplete) { 165 for (auto &W : Ws) 166 *W.Addr.toPtr<uint64_t *>() = W.Value; 167 OnWriteComplete(Error::success()); 168 } 169 170 void SelfExecutorProcessControl::writeBuffersAsync( 171 ArrayRef<tpctypes::BufferWrite> Ws, WriteResultFn OnWriteComplete) { 172 for (auto &W : Ws) 173 memcpy(W.Addr.toPtr<char *>(), W.Buffer.data(), W.Buffer.size()); 174 OnWriteComplete(Error::success()); 175 } 176 177 shared::CWrapperFunctionResult 178 SelfExecutorProcessControl::jitDispatchViaWrapperFunctionManager( 179 void *Ctx, const void *FnTag, const char *Data, size_t Size) { 180 181 LLVM_DEBUG({ 182 dbgs() << "jit-dispatch call with tag " << FnTag << " and " << Size 183 << " byte payload.\n"; 184 }); 185 186 std::promise<shared::WrapperFunctionResult> ResultP; 187 auto ResultF = ResultP.get_future(); 188 static_cast<SelfExecutorProcessControl *>(Ctx) 189 ->getExecutionSession() 190 .runJITDispatchHandler( 191 [ResultP = std::move(ResultP)]( 192 shared::WrapperFunctionResult Result) mutable { 193 ResultP.set_value(std::move(Result)); 194 }, 195 ExecutorAddr::fromPtr(FnTag), {Data, Size}); 196 197 return ResultF.get().release(); 198 } 199 200 } // end namespace orc 201 } // end namespace llvm 202