mirror of
https://gcc.gnu.org/git/gcc.git
synced 2024-11-27 13:54:19 +08:00
116 lines
3.1 KiB
C++
116 lines
3.1 KiB
C++
/* Plugin connection declarations
|
|
Copyright (C) 2014-2024 Free Software Foundation, Inc.
|
|
|
|
This file is part of GCC.
|
|
|
|
GCC is free software; you can redistribute it and/or modify it under
|
|
the terms of the GNU General Public License as published by the Free
|
|
Software Foundation; either version 3, or (at your option) any later
|
|
version.
|
|
|
|
GCC is distributed in the hope that it will be useful, but WITHOUT ANY
|
|
WARRANTY; without even the implied warranty of MERCHANTABILITY or
|
|
FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
|
|
for more details.
|
|
|
|
You should have received a copy of the GNU General Public License
|
|
along with GCC; see the file COPYING3. If not see
|
|
<http://www.gnu.org/licenses/>. */
|
|
|
|
#ifndef CC1_PLUGIN_CONNECTION_HH
|
|
#define CC1_PLUGIN_CONNECTION_HH
|
|
|
|
#include "status.hh"
|
|
#include "callbacks.hh"
|
|
|
|
namespace cc1_plugin
|
|
{
|
|
// The connection class represents one side of the connection
|
|
// between the gdb-side library and the gcc plugin. It handles the
|
|
// low-level details of reading and writing data.
|
|
class connection
|
|
{
|
|
public:
|
|
|
|
connection (int fd)
|
|
: m_fd (fd),
|
|
m_aux_fd (-1),
|
|
m_callbacks ()
|
|
{
|
|
}
|
|
|
|
connection (int fd, int aux_fd)
|
|
: m_fd (fd),
|
|
m_aux_fd (aux_fd),
|
|
m_callbacks ()
|
|
{
|
|
}
|
|
|
|
virtual ~connection () = default;
|
|
|
|
connection (const connection &) = delete;
|
|
connection &operator= (const connection &) = delete;
|
|
|
|
// Send a single character. This is used to introduce various
|
|
// higher-level protocol elements.
|
|
status send (char c);
|
|
|
|
// Send data in bulk.
|
|
status send (const void *buf, int len);
|
|
|
|
// Read a single byte from the connection and verify that it
|
|
// matches the argument C.
|
|
status require (char c);
|
|
|
|
// Read data in bulk.
|
|
status get (void *buf, int len);
|
|
|
|
// This is called after a query (remote function call) has been
|
|
// sent to the remote. It waits for a response packet. The
|
|
// response character is read before returning. Any query packets
|
|
// sent from the remote while waiting for a response are handled
|
|
// by this function.
|
|
status wait_for_result ()
|
|
{
|
|
return do_wait (true);
|
|
}
|
|
|
|
// Read and respond to query packets sent by the remote. This
|
|
// function returns when the connection is closed.
|
|
status wait_for_query ()
|
|
{
|
|
return do_wait (false);
|
|
}
|
|
|
|
// Register a callback with this connection. NAME is the name of
|
|
// the method being registered. FUNC is the function. It must
|
|
// know how to decode its own arguments. When a query packet is
|
|
// received by one of the wait_* methods, the corresponding
|
|
// callback is invoked.
|
|
void add_callback (const char *name, callback_ftype *func)
|
|
{
|
|
m_callbacks.add_callback (name, func);
|
|
}
|
|
|
|
virtual void print (const char *)
|
|
{
|
|
}
|
|
|
|
private:
|
|
|
|
// Helper function for the wait_* methods.
|
|
status do_wait (bool);
|
|
|
|
// The file descriptor.
|
|
int m_fd;
|
|
|
|
// An auxiliary file descriptor, or -1 if none.
|
|
int m_aux_fd;
|
|
|
|
// Callbacks associated with this connection.
|
|
callbacks m_callbacks;
|
|
};
|
|
}
|
|
|
|
#endif // CC1_PLUGIN_CONNECTION_HH
|