92 lines
2 KiB
C
92 lines
2 KiB
C
/* The ptid_t type and common functions operating on it.
|
|
|
|
Copyright (C) 1986, 1988-2012 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/>. */
|
|
|
|
#include "ptid.h"
|
|
|
|
/* Oft used ptids */
|
|
ptid_t null_ptid = { 0, 0, 0 };
|
|
ptid_t minus_one_ptid = { -1, 0, 0 };
|
|
|
|
/* Create a ptid given the necessary PID, LWP, and TID components. */
|
|
|
|
ptid_t
|
|
ptid_build (int pid, long lwp, long tid)
|
|
{
|
|
ptid_t ptid;
|
|
|
|
ptid.pid = pid;
|
|
ptid.lwp = lwp;
|
|
ptid.tid = tid;
|
|
return ptid;
|
|
}
|
|
|
|
/* Create a ptid from just a pid. */
|
|
|
|
ptid_t
|
|
pid_to_ptid (int pid)
|
|
{
|
|
return ptid_build (pid, 0, 0);
|
|
}
|
|
|
|
/* Fetch the pid (process id) component from a ptid. */
|
|
|
|
int
|
|
ptid_get_pid (ptid_t ptid)
|
|
{
|
|
return ptid.pid;
|
|
}
|
|
|
|
/* Fetch the lwp (lightweight process) component from a ptid. */
|
|
|
|
long
|
|
ptid_get_lwp (ptid_t ptid)
|
|
{
|
|
return ptid.lwp;
|
|
}
|
|
|
|
/* Fetch the tid (thread id) component from a ptid. */
|
|
|
|
long
|
|
ptid_get_tid (ptid_t ptid)
|
|
{
|
|
return ptid.tid;
|
|
}
|
|
|
|
/* ptid_equal() is used to test equality of two ptids. */
|
|
|
|
int
|
|
ptid_equal (ptid_t ptid1, ptid_t ptid2)
|
|
{
|
|
return (ptid1.pid == ptid2.pid
|
|
&& ptid1.lwp == ptid2.lwp
|
|
&& ptid1.tid == ptid2.tid);
|
|
}
|
|
|
|
/* Returns true if PTID represents a process. */
|
|
|
|
int
|
|
ptid_is_pid (ptid_t ptid)
|
|
{
|
|
if (ptid_equal (minus_one_ptid, ptid))
|
|
return 0;
|
|
if (ptid_equal (null_ptid, ptid))
|
|
return 0;
|
|
|
|
return (ptid_get_lwp (ptid) == 0 && ptid_get_tid (ptid) == 0);
|
|
}
|