tools/fidlcat/lib/inference.h

// Copyright 2019 The Fuchsia Authors. All rights reserved.
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.

#ifndef TOOLS_FIDLCAT_LIB_INFERENCE_H_
#define TOOLS_FIDLCAT_LIB_INFERENCE_H_

#include <map>
#include <memory>
#include <string>
#include <string_view>
#include <vector>

#include "src/lib/fidl_codec/semantic.h"

namespace fidlcat {

class SyscallDecoder;

// Object which hold the information we have about handles.
class Inference : public fidl_codec::semantic::HandleSemantic {
 public:
  Inference() = default;

  // Function called when processargs_extract_handles (from libc) is intercepted.
  void ExtractHandles(SyscallDecoder* decoder);

  // Function called when __libc_extensions_init (from libc) is intercepted.
  void LibcExtensionsInit(SyscallDecoder* decoder);

  // Function call for channel functions which read/write FILD messages to try to infer some
  // semantic.
  void InferMessage(SyscallDecoder* decoder, fidl_codec::semantic::ContextType context_type);

  // Called after a zx_channel_create syscall has been displayed.
  void ZxChannelCreate(SyscallDecoder* decoder);

  // Called after a zx_port_create syscall has been displayed.
  void ZxPortCreate(SyscallDecoder* decoder);

  // Called after a zx_timer_create syscall has been displayed.
  void ZxTimerCreate(SyscallDecoder* decoder);

 private:
  // Id for the next created channel.
  uint32_t next_channel_ = 0;
  // Id for the next created port.
  uint32_t next_port_ = 0;
  // Id for the next created timer.
  uint32_t next_timer_ = 0;
};

}  // namespace fidlcat

#endif  // TOOLS_FIDLCAT_LIB_INFERENCE_H_