Public Member Functions
	ShadowGarbageCollector (llvm::Module &module, llvm::LLVMContext &context, llvm::IRBuilder<> &builder)

virtual std::string	llvmStrategy ()

void	createFrameMapForCallee (FuncDefAST *)
	Insert a FrameMap in the beginning of each function.

void	setStackEntryFromCaller (FuncDefAST *)

void	initGlobalRootChain ()

void	initGCFunc ()

Member Function Documentation

◆ createFrameMapForCallee()

void sammine_lang::AST::ShadowGarbageCollector::createFrameMapForCallee ( FuncDefAST * f )

Insert a FrameMap in the beginning of each function.

The map for a single function's stack frame. One of these is compiled as constant data into the executable for each function.

Storage of metadata values is elided if the metadata parameter to @llvm.gcroot is null.

void sammine_lang::AST::ShadowGarbageCollector::initGCFunc ( )

Calls Visitor(root, meta) for each GC root on the stack. root and meta are exactly the values passed to @llvm.gcroot.

Visitor could be a function to recursively mark live objects. Or it might copy them to another heap or generation.

Parameters

Visitor A function to invoke for every GC root on the stack.

void sammine_lang::AST::ShadowGarbageCollector::initGlobalRootChain ( )

The head of the singly-linked list of StackEntries. Functions push and pop onto this in their prologue and epilogue.

Since there is only a global list, this technique is not threadsafe.

void sammine_lang::AST::ShadowGarbageCollector::setStackEntryFromCaller ( FuncDefAST * f )

INFO: We'll set the global curr_stack_entry->next to be the caller, We'll also set the curr_stack_entry->frame_map to be the callee's frame map

INFO: this will require us to keep a map of string to FrameMap in the ShadowGarbageCollector class. For more details, see createFrameMap

A link in the dynamic shadow stack. One of these is embedded in the stack frame of each function on the call stack.

The documentation for this class was generated from the following files: