gdb/common/ptid.c

   1 /* The ptid_t type and common functions operating on it.
   2
   3    Copyright (C) 1986-2017 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 "common-defs.h"
  21 #include "ptid.h"
  22
  23 /* See ptid.h for these.  */
  24
  25 ptid_t null_ptid = { 0, 0, 0 };
  26 ptid_t minus_one_ptid = { -1, 0, 0 };
  27
  28 /* See ptid.h.  */
  29
  30 ptid_t
  31 ptid_build (int pid, long lwp, long tid)
  32 {
  33   ptid_t ptid;
  34
  35   ptid.pid = pid;
  36   ptid.lwp = lwp;
  37   ptid.tid = tid;
  38   return ptid;
  39 }
  40
  41 /* See ptid.h.  */
  42
  43 ptid_t
  44 pid_to_ptid (int pid)
  45 {
  46   return ptid_build (pid, 0, 0);
  47 }
  48
  49 /* See ptid.h.  */
  50
  51 int
  52 ptid_get_pid (ptid_t ptid)
  53 {
  54   return ptid.pid;
  55 }
  56
  57 /* See ptid.h.  */
  58
  59 long
  60 ptid_get_lwp (ptid_t ptid)
  61 {
  62   return ptid.lwp;
  63 }
  64
  65 /* See ptid.h.  */
  66
  67 long
  68 ptid_get_tid (ptid_t ptid)
  69 {
  70   return ptid.tid;
  71 }
  72
  73 /* See ptid.h.  */
  74
  75 int
  76 ptid_equal (ptid_t ptid1, ptid_t ptid2)
  77 {
  78   return (ptid1.pid == ptid2.pid
  79           && ptid1.lwp == ptid2.lwp
  80           && ptid1.tid == ptid2.tid);
  81 }
  82
  83 /* See ptid.h.  */
  84
  85 int
  86 ptid_is_pid (ptid_t ptid)
  87 {
  88   if (ptid_equal (minus_one_ptid, ptid)
  89       || ptid_equal (null_ptid, ptid))
  90     return 0;
  91
  92   return (ptid_get_lwp (ptid) == 0 && ptid_get_tid (ptid) == 0);
  93 }
  94
  95 /* See ptid.h.  */
  96
  97 int
  98 ptid_lwp_p (ptid_t ptid)
  99 {
 100   return (ptid_get_lwp (ptid) != 0);
 101 }
 102
 103 /* See ptid.h.  */
 104
 105 int
 106 ptid_tid_p (ptid_t ptid)
 107 {
 108   return (ptid_get_tid (ptid) != 0);
 109 }
 110
 111 int
 112 ptid_match (ptid_t ptid, ptid_t filter)
 113 {
 114   if (ptid_equal (filter, minus_one_ptid))
 115     return 1;
 116   if (ptid_is_pid (filter)
 117       && ptid_get_pid (ptid) == ptid_get_pid (filter))
 118     return 1;
 119   else if (ptid_equal (ptid, filter))
 120     return 1;
 121
 122   return 0;
 123 }