//===--------------- VMThread.h - VM thread description -------------------===//
//
//                              N3
//
// This file is distributed under the University of Illinois Open Source
// License. See LICENSE.TXT for details.
//
//===----------------------------------------------------------------------===//

#ifndef N3_VM_THREAD_H
#define N3_VM_THREAD_H

#include <setjmp.h>

#include "llvm/PassManager.h"

#include "mvm/Object.h"
#include "mvm/Threads/Cond.h"
#include "mvm/Threads/Locks.h"
#include "MutatorThread.h"

namespace n3 {

class N3;
class VMClass;
class VMGenericClass;
class VMObject;
class VMGenericMethod;

class VMThread : public mvm::MutatorThread {
public:
  VMObject* ooo_appThread;
  
  N3* getVM() {
    return (N3*)MyVM;
  }
  
  mvm::Lock*   lock;
  mvm::Cond*   varcond;
  VMObject*    ooo_pendingException;
  void*        internalPendingException;
  unsigned int interruptFlag;
  unsigned int state;
  
  static const unsigned int StateRunning;
  static const unsigned int StateWaiting;
  static const unsigned int StateInterrupted;

  virtual void print(mvm::PrintBuffer *buf) const;
  virtual void TRACER;
  ~VMThread();
  VMThread(VMObject *thread, N3 *vm);
  
  // Temporary solution until N3 can cleanly bootstrap itself and
  // implement threads.
  static VMThread* TheThread;
  static VMThread* get() {
    return TheThread;
  }
  static VMObject* currentThread();
  
  static VMObject* getCLIException();
  static void* getCppException();
  static void throwException(VMObject*);
  static bool compareException(VMClass*);

  llvm::FunctionPassManager* perFunctionPasses;
  std::vector<jmp_buf*> sjlj_buffers;
  
private:
  virtual void internalClearException();
};

} // end namespace n3

#endif