projects / deliverable / binutils-gdb.git / blame
| Commit | Line | Data |
|---|---|---|
| d26e3629 KY |
1 | /* The ptid_t type and common functions operating on it. |
| 2 | ||
| 3 | Copyright (C) 1986, 1988, 1989, 1990, 1991, 1992, 1993, 1994, 1995, 1996, | |
| 4 | 1997, 1998, 1999, 2000, 2001, 2002, 2003, 2004, 2005, 2006, 2007, 2008, | |
| 5 | 2009, 2010, 2011 Free Software Foundation, Inc. | |
| 6 | ||
| 7 | This file is part of GDB. | |
| 8 | ||
| 9 | This program is free software; you can redistribute it and/or modify | |
| 10 | it under the terms of the GNU General Public License as published by | |
| 11 | the Free Software Foundation; either version 3 of the License, or | |
| 12 | (at your option) any later version. | |
| 13 | ||
| 14 | This program is distributed in the hope that it will be useful, | |
| 15 | but WITHOUT ANY WARRANTY; without even the implied warranty of | |
| 16 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
| 17 | GNU General Public License for more details. | |
| 18 | ||
| 19 | You should have received a copy of the GNU General Public License | |
| 20 | along with this program. If not, see <http://www.gnu.org/licenses/>. */ | |
| 21 | ||
| 22 | #include "ptid.h" | |
| 23 | ||
| 24 | /* Oft used ptids */ | |
| 25 | ptid_t null_ptid = { 0, 0, 0 }; | |
| 26 | ptid_t minus_one_ptid = { -1, 0, 0 }; | |
| 27 | ||
| 28 | /* Create a ptid given the necessary PID, LWP, and TID components. */ | |
| 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 | /* Create a ptid from just a pid. */ | |
| 42 | ||
| 43 | ptid_t | |
| 44 | pid_to_ptid (int pid) | |
| 45 | { | |
| 46 | return ptid_build (pid, 0, 0); | |
| 47 | } | |
| 48 | ||
| 49 | /* Fetch the pid (process id) component from a ptid. */ | |
| 50 | ||
| 51 | int | |
| 52 | ptid_get_pid (ptid_t ptid) | |
| 53 | { | |
| 54 | return ptid.pid; | |
| 55 | } | |
| 56 | ||
| 57 | /* Fetch the lwp (lightweight process) component from a ptid. */ | |
| 58 | ||
| 59 | long | |
| 60 | ptid_get_lwp (ptid_t ptid) | |
| 61 | { | |
| 62 | return ptid.lwp; | |
| 63 | } | |
| 64 | ||
| 65 | /* Fetch the tid (thread id) component from a ptid. */ | |
| 66 | ||
| 67 | long | |
| 68 | ptid_get_tid (ptid_t ptid) | |
| 69 | { | |
| 70 | return ptid.tid; | |
| 71 | } | |
| 72 | ||
| 73 | /* ptid_equal() is used to test equality of two ptids. */ | |
| 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 | /* Returns true if PTID represents a process. */ | |
| 84 | ||
| 85 | int | |
| 86 | ptid_is_pid (ptid_t ptid) | |
| 87 | { | |
| 88 | if (ptid_equal (minus_one_ptid, ptid)) | |
| 89 | return 0; | |
| 90 | if (ptid_equal (null_ptid, ptid)) | |
| 91 | return 0; | |
| 92 | ||
| 93 | return (ptid_get_lwp (ptid) == 0 && ptid_get_tid (ptid) == 0); | |
| 94 | } |