mirror of
https://sourceware.org/git/binutils-gdb.git
synced 2024-11-30 13:33:53 +08:00
8674f082e3
On some systems, the gnulib configuration will decide to define open and/or close as macros to replace the POSIX C functions. This interferes with using those names in C++ class or namespace scopes. gdbsupport/ * event-pipe.cc (event_pipe::open): Renamed to ... (event_pipe::open_pipe): ... this. (event_pipe::close): Renamed to ... (event_pipe::close_pipe): ... this. * event-pipe.h (class event_pipe): Updated. gdb/ * inf-ptrace.h (async_file_open, async_file_close): Updated. gdbserver/ * gdbserver/linux-low.cc (linux_process_target::async): Likewise.
117 lines
3.4 KiB
C++
117 lines
3.4 KiB
C++
/* Low level child interface to ptrace.
|
|
|
|
Copyright (C) 2004-2022 Free Software Foundation, Inc.
|
|
|
|
This file is part of GDB.
|
|
|
|
This program 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 of the License, or
|
|
(at your option) any later version.
|
|
|
|
This program 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 this program. If not, see <http://www.gnu.org/licenses/>. */
|
|
|
|
#ifndef INF_PTRACE_H
|
|
#define INF_PTRACE_H
|
|
|
|
#include "gdbsupport/event-pipe.h"
|
|
#include "inf-child.h"
|
|
|
|
/* An abstract prototype ptrace target. The client can override it
|
|
with local methods. */
|
|
|
|
struct inf_ptrace_target : public inf_child_target
|
|
{
|
|
~inf_ptrace_target () override = 0;
|
|
|
|
void attach (const char *, int) override;
|
|
|
|
void detach (inferior *inf, int) override;
|
|
|
|
void close () override;
|
|
|
|
void resume (ptid_t, int, enum gdb_signal) override;
|
|
|
|
ptid_t wait (ptid_t, struct target_waitstatus *, target_wait_flags) override;
|
|
|
|
void files_info () override;
|
|
|
|
void kill () override;
|
|
|
|
void create_inferior (const char *, const std::string &,
|
|
char **, int) override;
|
|
|
|
void mourn_inferior () override;
|
|
|
|
bool thread_alive (ptid_t ptid) override;
|
|
|
|
std::string pid_to_str (ptid_t) override;
|
|
|
|
enum target_xfer_status xfer_partial (enum target_object object,
|
|
const char *annex,
|
|
gdb_byte *readbuf,
|
|
const gdb_byte *writebuf,
|
|
ULONGEST offset, ULONGEST len,
|
|
ULONGEST *xfered_len) override;
|
|
|
|
bool is_async_p () override
|
|
{ return m_event_pipe.is_open (); }
|
|
|
|
int async_wait_fd () override
|
|
{ return m_event_pipe.event_fd (); }
|
|
|
|
/* Helper routine used from SIGCHLD handlers to signal the async
|
|
event pipe. */
|
|
static void async_file_mark_if_open ()
|
|
{
|
|
if (m_event_pipe.is_open ())
|
|
m_event_pipe.mark ();
|
|
}
|
|
|
|
protected:
|
|
/* Helper routines for interacting with the async event pipe. */
|
|
bool async_file_open ()
|
|
{ return m_event_pipe.open_pipe (); }
|
|
void async_file_close ()
|
|
{ m_event_pipe.close_pipe (); }
|
|
void async_file_flush ()
|
|
{ m_event_pipe.flush (); }
|
|
void async_file_mark ()
|
|
{ m_event_pipe.mark (); }
|
|
|
|
/* Cleanup the inferior after a successful ptrace detach. */
|
|
void detach_success (inferior *inf);
|
|
|
|
/* Some targets don't allow us to request notification of inferior events
|
|
such as fork and vfork immediately after the inferior is created.
|
|
(This is because of how gdb creates inferiors via invoking a shell to
|
|
do it. In such a scenario, if the shell init file has commands in it,
|
|
the shell will fork and exec for each of those commands, and we will
|
|
see each such fork event. Very bad.)
|
|
|
|
Such targets will supply an appropriate definition for this
|
|
function. */
|
|
virtual void post_startup_inferior (ptid_t ptid) = 0;
|
|
|
|
private:
|
|
static event_pipe m_event_pipe;
|
|
};
|
|
|
|
#ifndef __NetBSD__
|
|
/* Return which PID to pass to ptrace in order to observe/control the
|
|
tracee identified by PTID.
|
|
|
|
Unlike most other Operating Systems, NetBSD tracks both pid and lwp
|
|
and avoids this function. */
|
|
|
|
extern pid_t get_ptrace_pid (ptid_t);
|
|
#endif
|
|
|
|
#endif
|