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86 lines
2.8 KiB
C
86 lines
2.8 KiB
C
/* The ptid_t type and common functions operating on it.
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Copyright (C) 1986, 1988-2012 Free Software Foundation, Inc.
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This file is part of GDB.
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This program is free software; you can redistribute it and/or modify
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it under the terms of the GNU General Public License as published by
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the Free Software Foundation; either version 3 of the License, or
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(at your option) any later version.
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This program is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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GNU General Public License for more details.
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You should have received a copy of the GNU General Public License
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along with this program. If not, see <http://www.gnu.org/licenses/>. */
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#ifndef PTID_H
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#define PTID_H
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/* The ptid struct is a collection of the various "ids" necessary
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for identifying the inferior. This consists of the process id
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(pid), thread id (tid), and other fields necessary for uniquely
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identifying the inferior process/thread being debugged. When
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manipulating ptids, the constructors, accessors, and predicate
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declared in server.h should be used. These are as follows:
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ptid_build - Make a new ptid from a pid, lwp, and tid.
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pid_to_ptid - Make a new ptid from just a pid.
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ptid_get_pid - Fetch the pid component of a ptid.
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ptid_get_lwp - Fetch the lwp component of a ptid.
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ptid_get_tid - Fetch the tid component of a ptid.
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ptid_equal - Test to see if two ptids are equal.
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Please do NOT access the struct ptid members directly (except, of
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course, in the implementation of the above ptid manipulation
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functions). */
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struct ptid
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{
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/* Process id */
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int pid;
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/* Lightweight process id */
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long lwp;
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/* Thread id */
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long tid;
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};
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typedef struct ptid ptid_t;
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/* The null or zero ptid, often used to indicate no process. */
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extern ptid_t null_ptid;
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/* The -1 ptid, often used to indicate either an error condition
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or a "don't care" condition, i.e, "run all threads." */
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extern ptid_t minus_one_ptid;
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/* Attempt to find and return an existing ptid with the given PID, LWP,
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and TID components. If none exists, create a new one and return
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that. */
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ptid_t ptid_build (int pid, long lwp, long tid);
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/* Find/Create a ptid from just a pid. */
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ptid_t pid_to_ptid (int pid);
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/* Fetch the pid (process id) component from a ptid. */
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int ptid_get_pid (ptid_t ptid);
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/* Fetch the lwp (lightweight process) component from a ptid. */
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long ptid_get_lwp (ptid_t ptid);
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/* Fetch the tid (thread id) component from a ptid. */
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long ptid_get_tid (ptid_t ptid);
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/* Compare two ptids to see if they are equal */
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int ptid_equal (ptid_t p1, ptid_t p2);
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/* Return true if PTID represents a process id. */
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int ptid_is_pid (ptid_t ptid);
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#endif
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