1 /* The ptid_t type and common functions operating on it.
3 Copyright (C) 1986, 1988-2012 Free Software Foundation, Inc.
5 This file is part of GDB.
7 This program is free software; you can redistribute it and/or modify
8 it under the terms of the GNU General Public License as published by
9 the Free Software Foundation; either version 3 of the License, or
10 (at your option) any later version.
12 This program is distributed in the hope that it will be useful,
13 but WITHOUT ANY WARRANTY; without even the implied warranty of
14 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
15 GNU General Public License for more details.
17 You should have received a copy of the GNU General Public License
18 along with this program. If not, see <http://www.gnu.org/licenses/>. */
23 ptid_t null_ptid
= { 0, 0, 0 };
24 ptid_t minus_one_ptid
= { -1, 0, 0 };
26 /* Create a ptid given the necessary PID, LWP, and TID components. */
29 ptid_build (int pid
, long lwp
, long tid
)
39 /* Create a ptid from just a pid. */
44 return ptid_build (pid
, 0, 0);
47 /* Fetch the pid (process id) component from a ptid. */
50 ptid_get_pid (ptid_t ptid
)
55 /* Fetch the lwp (lightweight process) component from a ptid. */
58 ptid_get_lwp (ptid_t ptid
)
63 /* Fetch the tid (thread id) component from a ptid. */
66 ptid_get_tid (ptid_t ptid
)
71 /* ptid_equal() is used to test equality of two ptids. */
74 ptid_equal (ptid_t ptid1
, ptid_t ptid2
)
76 return (ptid1
.pid
== ptid2
.pid
77 && ptid1
.lwp
== ptid2
.lwp
78 && ptid1
.tid
== ptid2
.tid
);
81 /* Returns true if PTID represents a process. */
84 ptid_is_pid (ptid_t ptid
)
86 if (ptid_equal (minus_one_ptid
, ptid
))
88 if (ptid_equal (null_ptid
, ptid
))
91 return (ptid_get_lwp (ptid
) == 0 && ptid_get_tid (ptid
) == 0);
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