[orc-rt] Add SimpleNativeMemoryMap. #162584
Merged
Conversation
This file contains hidden or bidirectional Unicode text that may be interpreted or compiled differently than what appears below. To review, open the file in an editor that reveals hidden Unicode characters.
Learn more about bidirectional Unicode characters
SimpleNativeMemoryMap is a memory allocation backend for use with ORC. It can... 1. Reserve slabs of address space. 2. Finalize regions of memory within a reserved slab: copying content into requested addresses, applying memory protections, running finalization actions, and storing deallocation actions to be run by deallocate. 3. Deallocate finalized memory regions: running deallocate actions and, if possible, making memory in these regions available for use by future finalization operations. (Some systems prohibit reuse of executable memory. On these systems deallocated memory is no longer usable within the process). 4. Release reserved slabs. This runs deallocate for any not-yet-deallocated finalized regions, and then (if possible) returns the address space to system. (On systems that prohibit reuse of executable memory parts of the released address space may be permanently unusable by the process). SimpleNativeMemoryMap is intended primarily for use by llvm::orc::JITLinkMemoryManager implementations to allocate JIT'd code and data.
svkeerthy
pushed a commit
that referenced
this pull request
Oct 9, 2025
SimpleNativeMemoryMap is a memory allocation backend for use with ORC. It can... 1. Reserve slabs of address space. 2. Finalize regions of memory within a reserved slab: copying content into requested addresses, applying memory protections, running finalization actions, and storing deallocation actions to be run by deallocate. 3. Deallocate finalized memory regions: running deallocate actions and, if possible, making memory in these regions available for use by future finalization operations. (Some systems prohibit reuse of executable memory. On these systems deallocated memory is no longer usable within the process). 4. Release reserved slabs. This runs deallocate for any not-yet-deallocated finalized regions, and then (if possible) returns the address space to system. (On systems that prohibit reuse of executable memory parts of the released address space may be permanently unusable by the process). SimpleNativeMemoryMap is intended primarily for use by llvm::orc::JITLinkMemoryManager implementations to allocate JIT'd code and data.
clingfei
pushed a commit
to clingfei/llvm-project
that referenced
this pull request
Oct 10, 2025
SimpleNativeMemoryMap is a memory allocation backend for use with ORC. It can... 1. Reserve slabs of address space. 2. Finalize regions of memory within a reserved slab: copying content into requested addresses, applying memory protections, running finalization actions, and storing deallocation actions to be run by deallocate. 3. Deallocate finalized memory regions: running deallocate actions and, if possible, making memory in these regions available for use by future finalization operations. (Some systems prohibit reuse of executable memory. On these systems deallocated memory is no longer usable within the process). 4. Release reserved slabs. This runs deallocate for any not-yet-deallocated finalized regions, and then (if possible) returns the address space to system. (On systems that prohibit reuse of executable memory parts of the released address space may be permanently unusable by the process). SimpleNativeMemoryMap is intended primarily for use by llvm::orc::JITLinkMemoryManager implementations to allocate JIT'd code and data.
Sign up for free
to join this conversation on GitHub.
Already have an account?
Sign in to comment
1 participant
Add this suggestion to a batch that can be applied as a single commit.
This suggestion is invalid because no changes were made to the code.
Suggestions cannot be applied while the pull request is closed.
Suggestions cannot be applied while viewing a subset of changes.
Only one suggestion per line can be applied in a batch.
Add this suggestion to a batch that can be applied as a single commit.
Applying suggestions on deleted lines is not supported.
You must change the existing code in this line in order to create a valid suggestion.
Outdated suggestions cannot be applied.
This suggestion has been applied or marked resolved.
Suggestions cannot be applied from pending reviews.
Suggestions cannot be applied on multi-line comments.
Suggestions cannot be applied while the pull request is queued to merge.
Suggestion cannot be applied right now. Please check back later.
SimpleNativeMemoryMap is a memory allocation backend for use with ORC. It can...
SimpleNativeMemoryMap is intended primarily for use by llvm::orc::JITLinkMemoryManager implementations to allocate JIT'd code and data.