managers.
Prior to this patch, recursive finalization (where finalization of one
RuntimeDyld instance triggers finalization of another instance on which the
first depends) could trigger memory access failures: When the inner (dependent)
RuntimeDyld instance and its memory manager are finalized, memory allocated
(but not yet relocated) by the outer instance is locked, and relocation in the
outer instance fails with a memory access error.
This patch adds a latch to the RuntimeDyld::MemoryManager base class that is
checked by a new method: RuntimeDyld::finalizeWithMemoryManagerLocking, ensuring
that shared memory managers are only finalized by the outermost RuntimeDyld
instance.
This allows ORC clients to supply the same memory manager to multiple calls to
addModuleSet. In particular it enables the use of user-supplied memory managers
with the CompileOnDemandLayer which must reuse the supplied memory manager for
each function that is lazily compiled.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@257263 91177308-0d34-0410-b5e6-96231b3b80d8
was causing builder failures.
The bindings were originally added in r251472, and reverted in r251473 due to
the builder failures.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@251482 91177308-0d34-0410-b5e6-96231b3b80d8
the function body.
This is necessary for correctness when lazily compiling.
Also, flesh out the Orc unit test infrastructure slightly, and add a unit test
for this.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@235347 91177308-0d34-0410-b5e6-96231b3b80d8
