1                 : /*
       2                 :  * Copyright 2010 The Native Client Authors. All rights reserved.
       3                 :  * Use of this source code is governed by a BSD-style license that can
       4                 :  * be found in the LICENSE file.
       5                 :  */
       6                 : 
       7                 : 
       8                 : // This module defines the interface for interacting with platform specific
       9                 : // threads.  This API provides a mechanism to query for a thread, by using
      10                 : // the acquire method with the ID of a pre-existing thread.
      11                 : 
      12                 : #ifndef NATIVE_CLIENT_PORT_THREAD_H_
      13                 : #define NATIVE_CLIENT_PORT_THREAD_H_ 1
      14                 : 
      15                 : #include "native_client/src/include/portability.h"
      16                 : 
      17                 : struct NaClAppThread;
      18                 : struct NaClSignalContext;
      19                 : 
      20                 : namespace port {
      21                 : 
      22              20 : class IThread {
      23                 :  public:
      24               3 :   virtual ~IThread() {}
      25                 : 
      26                 :   virtual uint32_t GetId() = 0;
      27                 : 
      28                 :   virtual bool SetStep(bool on) = 0;
      29                 : 
      30                 :   virtual bool GetRegister(uint32_t index, void *dst, uint32_t len) = 0;
      31                 :   virtual bool SetRegister(uint32_t index, void *src, uint32_t len) = 0;
      32                 : 
      33                 :   virtual void CopyRegistersFromAppThread() = 0;
      34                 :   virtual void CopyRegistersToAppThread() = 0;
      35                 : 
      36                 :   virtual void SuspendThread() = 0;
      37                 :   virtual void ResumeThread() = 0;
      38                 :   virtual bool HasThreadFaulted() = 0;
      39                 :   virtual void UnqueueFaultedThread() = 0;
      40                 : 
      41                 :   virtual struct NaClSignalContext *GetContext() = 0;
      42                 :   virtual struct NaClAppThread *GetAppThread() = 0;
      43                 : 
      44                 :   virtual int GetFaultSignal() = 0;
      45                 :   virtual void SetFaultSignal(int signal) = 0;
      46                 : 
      47                 :   static IThread *Create(uint32_t id, struct NaClAppThread *natp);
      48                 :   static int ExceptionToSignal(int exception_code);
      49                 : };
      50                 : 
      51                 : }  // namespace port
      52                 : 
      53                 : #endif  // PORT_THREAD_H_