| //===-- RemoteJITUtils.h - Utilities for remote-JITing with LLI -*- C++ -*-===// |
| // |
| // The LLVM Compiler Infrastructure |
| // |
| // This file is distributed under the University of Illinois Open Source |
| // License. See LICENSE.TXT for details. |
| // |
| //===----------------------------------------------------------------------===// |
| // |
| // Utilities for remote-JITing with LLI. |
| // |
| //===----------------------------------------------------------------------===// |
| |
| #ifndef LLVM_TOOLS_LLI_REMOTEJITUTILS_H |
| #define LLVM_TOOLS_LLI_REMOTEJITUTILS_H |
| |
| #include "llvm/ExecutionEngine/Orc/RawByteChannel.h" |
| #include "llvm/Support/Error.h" |
| #include <cassert> |
| #include <cerrno> |
| #include <system_error> |
| |
| #if !defined(_MSC_VER) && !defined(__MINGW32__) |
| #include <unistd.h> |
| #else |
| #include <io.h> |
| #endif |
| |
| /// RPC channel that reads from and writes from file descriptors. |
| class FDRPCChannel final : public llvm::orc::rpc::RawByteChannel { |
| public: |
| FDRPCChannel(int InFD, int OutFD) : InFD(InFD), OutFD(OutFD) {} |
| |
| llvm::Error readBytes(char *Dst, unsigned Size) override { |
| assert(Dst && "Attempt to read into null."); |
| ssize_t Completed = 0; |
| while (Completed < static_cast<ssize_t>(Size)) { |
| ssize_t Read = ::read(InFD, Dst + Completed, Size - Completed); |
| if (Read <= 0) { |
| auto ErrNo = errno; |
| if (ErrNo == EAGAIN || ErrNo == EINTR) |
| continue; |
| else |
| return llvm::errorCodeToError( |
| std::error_code(errno, std::generic_category())); |
| } |
| Completed += Read; |
| } |
| return llvm::Error::success(); |
| } |
| |
| llvm::Error appendBytes(const char *Src, unsigned Size) override { |
| assert(Src && "Attempt to append from null."); |
| ssize_t Completed = 0; |
| while (Completed < static_cast<ssize_t>(Size)) { |
| ssize_t Written = ::write(OutFD, Src + Completed, Size - Completed); |
| if (Written < 0) { |
| auto ErrNo = errno; |
| if (ErrNo == EAGAIN || ErrNo == EINTR) |
| continue; |
| else |
| return llvm::errorCodeToError( |
| std::error_code(errno, std::generic_category())); |
| } |
| Completed += Written; |
| } |
| return llvm::Error::success(); |
| } |
| |
| llvm::Error send() override { return llvm::Error::success(); } |
| |
| private: |
| int InFD, OutFD; |
| }; |
| |
| #endif // LLVM_TOOLS_LLI_REMOTEJITUTILS_H |