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// Copyright 2020 the V8 project 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 V8_DEBUG_WASM_GDB_SERVER_SESSION_H_
#define V8_DEBUG_WASM_GDB_SERVER_SESSION_H_
#include "src/base/macros.h"
namespace v8 {
namespace internal {
namespace wasm {
namespace gdb_server {
class Transport;
// Represents a gdb-remote debugging session.
class Session {
public:
explicit Session(Transport* transport);
// Attempt to receive a packet.
// For the moment this method is only used to check whether the TCP connection
// is still active; all bytes read are discarded.
bool GetPacket();
// Return true if there is data to read.
bool IsDataAvailable() const;
// Return true if the connection still valid.
bool IsConnected() const;
// Shutdown the connection.
void Disconnect();
// When a debugging session is active, the GDB-remote thread can block waiting
// for events and it will resume execution when one of these two events arise:
// - A network event (a new packet arrives, or the connection is dropped)
// - A thread event (the execution stopped because of a trap or breakpoint).
void WaitForDebugStubEvent();
// Signal that the debuggee execution stopped because of a trap or breakpoint.
bool SignalThreadEvent();
private:
bool GetChar(char* ch);
Transport* io_; // Transport object not owned by the Session.
bool connected_; // Is the connection still valid.
DISALLOW_COPY_AND_ASSIGN(Session);
};
} // namespace gdb_server
} // namespace wasm
} // namespace internal
} // namespace v8
#endif // V8_DEBUG_WASM_GDB_SERVER_SESSION_H_
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