vmkit/include/vmkit/safepoint.h

#ifndef _SAFEPOINT_H_
#define _SAFEPOINT_H_

#include <stdint.h>
#include <stdio.h>

namespace llvm {
	class Module;
}

namespace vmkit {
	class CompilationUnit;

	class Safepoint { /* Warning: directly generated by safepoint.cc in the data sections */
		void*            _addr;
		CompilationUnit* _unit;

		uint32_t         _nbLives;
		uint32_t         _inlineDepth;

	public:
		void              setUnit(CompilationUnit* unit) { _unit = unit; }

		CompilationUnit*  unit() { return _unit; }
		void*             addr() { return _addr; }
		uint32_t          nbLives() { return _nbLives; }
		uint32_t          inlineDepth() { return _inlineDepth; }

		uint32_t          liveAt(uint32_t i) { 
			return ((uint32_t*)(this + 1))[i]; 
		}

		const char*       functionName(uint32_t i=0) { 
			return *(char**)((uintptr_t)this + sizeof(Safepoint) + _nbLives*sizeof(uint32_t) + i*(sizeof(const char*)+sizeof(uint32_t)));
		}

		uint32_t          sourceIndex(uint32_t i=0) { 
			return *(uint32_t*)((uintptr_t)this + sizeof(Safepoint) + _nbLives*sizeof(uint32_t) + 
													sizeof(const char*) + i*(sizeof(const char*)+sizeof(uint32_t)));
		}

		Safepoint*        getNext();
		void              dump();

		static Safepoint* get(CompilationUnit* unit, llvm::Module* module);
	};
}

#endif