Lang Hames f1200209c6 [Orc][RuntimeDyld] Prevent duplicate calls to finalizeMemory on shared memory ...

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.

llvm-svn: 257263

2016-01-09 19:50:40 +00:00

..

MCJIT

Fix some Clang-tidy modernize warnings, other minor fixes.

2015-11-04 22:32:32 +00:00

Orc

[Orc][RuntimeDyld] Prevent duplicate calls to finalizeMemory on shared memory

2016-01-09 19:50:40 +00:00

CMakeLists.txt

[orc] Add a trivial unit test to get the ball rolling

2015-02-23 00:36:25 +00:00

ExecutionEngineTest.cpp

Use 'override/final' instead of 'virtual' for overridden methods

2015-04-11 02:11:45 +00:00

Makefile

Fix Makefile build

2015-02-23 00:53:35 +00:00