gdb/common/ptid.c

   1 /* The ptid_t type and common functions operating on it.
   2
   3    Copyright (C) 1986-2013 Free Software Foundation, Inc.
   4
   5    This file is part of GDB.
   6
   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.
  11
  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.
  16
  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/>.  */
  19
  20 #include "ptid.h"
  21
  22 /* See ptid.h for these.  */
  23
  24 ptid_t null_ptid = { 0, 0, 0 };
  25 ptid_t minus_one_ptid = { -1, 0, 0 };
  26
  27 /* See ptid.h.  */
  28
  29 ptid_t
  30 ptid_build (int pid, long lwp, long tid)
  31 {
  32   ptid_t ptid;
  33
  34   ptid.pid = pid;
  35   ptid.lwp = lwp;
  36   ptid.tid = tid;
  37   return ptid;
  38 }
  39
  40 /* See ptid.h.  */
  41
  42 ptid_t
  43 pid_to_ptid (int pid)
  44 {
  45   return ptid_build (pid, 0, 0);
  46 }
  47
  48 /* See ptid.h.  */
  49
  50 int
  51 ptid_get_pid (ptid_t ptid)
  52 {
  53   return ptid.pid;
  54 }
  55
  56 /* See ptid.h.  */
  57
  58 long
  59 ptid_get_lwp (ptid_t ptid)
  60 {
  61   return ptid.lwp;
  62 }
  63
  64 /* See ptid.h.  */
  65
  66 long
  67 ptid_get_tid (ptid_t ptid)
  68 {
  69   return ptid.tid;
  70 }
  71
  72 /* See ptid.h.  */
  73
  74 int
  75 ptid_equal (ptid_t ptid1, ptid_t ptid2)
  76 {
  77   return (ptid1.pid == ptid2.pid
  78           && ptid1.lwp == ptid2.lwp
  79           && ptid1.tid == ptid2.tid);
  80 }
  81
  82 /* See ptid.h.  */
  83
  84 int
  85 ptid_is_pid (ptid_t ptid)
  86 {
  87   if (ptid_equal (minus_one_ptid, ptid)
  88       || ptid_equal (null_ptid, ptid))
  89     return 0;
  90
  91   return (ptid_get_lwp (ptid) == 0 && ptid_get_tid (ptid) == 0);
  92 }
  93
  94 /* See ptid.h.  */
  95
  96 int
  97 ptid_lwp_p (ptid_t ptid)
  98 {
  99   if (ptid_equal (minus_one_ptid, ptid)
 100       || ptid_equal (null_ptid, ptid))
 101     return 0;
 102
 103   return (ptid_get_lwp (ptid) != 0);
 104 }
 105
 106 /* See ptid.h.  */
 107
 108 int
 109 ptid_tid_p (ptid_t ptid)
 110 {
 111   if (ptid_equal (minus_one_ptid, ptid)
 112       || ptid_equal (null_ptid, ptid))
 113     return 0;
 114
 115   return (ptid_get_tid (ptid) != 0);
 116 }