[all-commits] [llvm/llvm-project] 1b1f1c: Re-re-apply 5acd47169884, Add a shared-memory base...

[Anubhab Ghosh via All-commits]

  Branch: refs/heads/main
  Home:   https://github.com/llvm/llvm-project
  Commit: 1b1f1c778695442c2683813ec7d4b557bb279e26
      https://github.com/llvm/llvm-project/commit/1b1f1c778695442c2683813ec7d4b557bb279e26
  Author: Anubhab Ghosh <anubhabghosh.me at gmail.com>
  Date:   2022-07-19 (Tue, 19 Jul 2022)

  Changed paths:
    M llvm/include/llvm/ExecutionEngine/Orc/MemoryMapper.h
    M llvm/include/llvm/ExecutionEngine/Orc/Shared/OrcRTBridge.h
    M llvm/include/llvm/ExecutionEngine/Orc/Shared/TargetProcessControlTypes.h
    A llvm/include/llvm/ExecutionEngine/Orc/TargetProcess/ExecutorSharedMemoryMapperService.h
    M llvm/lib/ExecutionEngine/Orc/CMakeLists.txt
    M llvm/lib/ExecutionEngine/Orc/MemoryMapper.cpp
    M llvm/lib/ExecutionEngine/Orc/Shared/OrcRTBridge.cpp
    M llvm/lib/ExecutionEngine/Orc/TargetProcess/CMakeLists.txt
    A llvm/lib/ExecutionEngine/Orc/TargetProcess/ExecutorSharedMemoryMapperService.cpp
    M llvm/unittests/ExecutionEngine/Orc/CMakeLists.txt
    A llvm/unittests/ExecutionEngine/Orc/SharedMemoryMapperTest.cpp

  Log Message:
  -----------
  Re-re-apply 5acd47169884, Add a shared-memory based orc::MemoryMapper...

...with more fixes.

The original patch was reverted in 3e9cc543f22 due to bot failures caused by
a missing dependence on librt. That issue was fixed in 32d8d23cd0, but that
commit also broke sanitizer bots due to a bug in SimplePackedSerialization:
empty ArrayRef<char>s triggered a zero-byte memcpy from a null source. The
ArrayRef<char> serialization issue was fixed in 67220c2ad7, and this patch has
also been updated with a new custom SharedMemorySegFinalizeRequest message that
should avoid serializing empty ArrayRefs in the first place.

https://reviews.llvm.org/D128544