2016-01-12 00:35:55 +08:00
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//===-- RemoteJITUtils.h - Utilities for remote-JITing with LLI -*- C++ -*-===//
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//
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// The LLVM Compiler Infrastructure
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//
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// This file is distributed under the University of Illinois Open Source
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// License. See LICENSE.TXT for details.
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//
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//===----------------------------------------------------------------------===//
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//
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// Utilities for remote-JITing with LLI.
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//
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//===----------------------------------------------------------------------===//
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#ifndef LLVM_TOOLS_LLI_REMOTEJITUTILS_H
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#define LLVM_TOOLS_LLI_REMOTEJITUTILS_H
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2016-11-12 05:42:09 +08:00
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#include "llvm/ExecutionEngine/Orc/RawByteChannel.h"
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2016-01-12 00:35:55 +08:00
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#include "llvm/ExecutionEngine/RTDyldMemoryManager.h"
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2016-04-19 03:55:43 +08:00
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#include <mutex>
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2016-01-12 00:35:55 +08:00
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#if !defined(_MSC_VER) && !defined(__MINGW32__)
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#include <unistd.h>
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#else
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#include <io.h>
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#endif
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/// RPC channel that reads from and writes from file descriptors.
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2016-11-12 05:42:09 +08:00
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class FDRawChannel final : public llvm::orc::rpc::RawByteChannel {
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2016-01-12 00:35:55 +08:00
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public:
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2016-11-12 05:42:09 +08:00
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FDRawChannel(int InFD, int OutFD) : InFD(InFD), OutFD(OutFD) {}
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2016-01-12 00:35:55 +08:00
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2016-04-26 03:56:45 +08:00
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llvm::Error readBytes(char *Dst, unsigned Size) override {
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2016-01-12 00:35:55 +08:00
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assert(Dst && "Attempt to read into null.");
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2016-04-26 03:56:45 +08:00
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ssize_t Completed = 0;
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2016-04-26 09:45:25 +08:00
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while (Completed < static_cast<ssize_t>(Size)) {
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2016-04-26 03:56:45 +08:00
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ssize_t Read = ::read(InFD, Dst + Completed, Size - Completed);
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if (Read <= 0) {
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auto ErrNo = errno;
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if (ErrNo == EAGAIN || ErrNo == EINTR)
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continue;
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else
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return llvm::errorCodeToError(
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std::error_code(errno, std::generic_category()));
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}
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Completed += Read;
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}
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return llvm::Error::success();
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2016-01-12 00:35:55 +08:00
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}
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2016-04-26 03:56:45 +08:00
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llvm::Error appendBytes(const char *Src, unsigned Size) override {
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2016-01-12 00:35:55 +08:00
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assert(Src && "Attempt to append from null.");
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2016-04-26 03:56:45 +08:00
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ssize_t Completed = 0;
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2016-04-26 09:45:25 +08:00
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while (Completed < static_cast<ssize_t>(Size)) {
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2016-04-26 03:56:45 +08:00
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ssize_t Written = ::write(OutFD, Src + Completed, Size - Completed);
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if (Written < 0) {
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auto ErrNo = errno;
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if (ErrNo == EAGAIN || ErrNo == EINTR)
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continue;
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else
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return llvm::errorCodeToError(
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std::error_code(errno, std::generic_category()));
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}
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Completed += Written;
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}
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return llvm::Error::success();
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2016-01-12 00:35:55 +08:00
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}
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2016-04-26 03:56:45 +08:00
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llvm::Error send() override { return llvm::Error::success(); }
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2016-01-12 00:35:55 +08:00
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private:
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int InFD, OutFD;
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};
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// launch the remote process (see lli.cpp) and return a channel to it.
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2016-11-12 05:42:09 +08:00
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std::unique_ptr<FDRawChannel> launchRemote();
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2016-01-12 00:35:55 +08:00
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namespace llvm {
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2016-11-12 05:42:09 +08:00
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// ForwardingMM - Adapter to connect MCJIT to Orc's Remote8
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// memory manager.
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2016-01-12 00:35:55 +08:00
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class ForwardingMemoryManager : public llvm::RTDyldMemoryManager {
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public:
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void setMemMgr(std::unique_ptr<RuntimeDyld::MemoryManager> MemMgr) {
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this->MemMgr = std::move(MemMgr);
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}
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2017-07-04 12:42:30 +08:00
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void setResolver(std::shared_ptr<JITSymbolResolver> Resolver) {
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2016-01-12 00:35:55 +08:00
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this->Resolver = std::move(Resolver);
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}
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uint8_t *allocateCodeSection(uintptr_t Size, unsigned Alignment,
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unsigned SectionID,
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StringRef SectionName) override {
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return MemMgr->allocateCodeSection(Size, Alignment, SectionID, SectionName);
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}
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uint8_t *allocateDataSection(uintptr_t Size, unsigned Alignment,
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unsigned SectionID, StringRef SectionName,
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bool IsReadOnly) override {
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return MemMgr->allocateDataSection(Size, Alignment, SectionID, SectionName,
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IsReadOnly);
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}
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void reserveAllocationSpace(uintptr_t CodeSize, uint32_t CodeAlign,
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uintptr_t RODataSize, uint32_t RODataAlign,
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uintptr_t RWDataSize,
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uint32_t RWDataAlign) override {
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MemMgr->reserveAllocationSpace(CodeSize, CodeAlign, RODataSize, RODataAlign,
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RWDataSize, RWDataAlign);
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}
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bool needsToReserveAllocationSpace() override {
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return MemMgr->needsToReserveAllocationSpace();
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}
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void registerEHFrames(uint8_t *Addr, uint64_t LoadAddr,
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size_t Size) override {
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MemMgr->registerEHFrames(Addr, LoadAddr, Size);
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}
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2017-05-10 05:32:18 +08:00
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void deregisterEHFrames() override {
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MemMgr->deregisterEHFrames();
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2016-01-12 00:35:55 +08:00
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}
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bool finalizeMemory(std::string *ErrMsg = nullptr) override {
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return MemMgr->finalizeMemory(ErrMsg);
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}
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void notifyObjectLoaded(RuntimeDyld &RTDyld,
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const object::ObjectFile &Obj) override {
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MemMgr->notifyObjectLoaded(RTDyld, Obj);
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}
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// Don't hide the sibling notifyObjectLoaded from RTDyldMemoryManager.
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using RTDyldMemoryManager::notifyObjectLoaded;
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2016-08-02 04:49:11 +08:00
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JITSymbol findSymbol(const std::string &Name) override {
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return Resolver->findSymbol(Name);
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}
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2016-08-02 04:49:11 +08:00
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JITSymbol
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findSymbolInLogicalDylib(const std::string &Name) override {
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return Resolver->findSymbolInLogicalDylib(Name);
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}
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private:
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std::unique_ptr<RuntimeDyld::MemoryManager> MemMgr;
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2017-07-04 12:42:30 +08:00
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std::shared_ptr<JITSymbolResolver> Resolver;
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2016-01-12 00:35:55 +08:00
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};
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}
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#endif
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