VirtualBox

source: vbox/trunk/src/VBox/Runtime/r3/linux/RTThreadGetNativeState-linux.cpp@ 103795

Last change on this file since 103795 was 98103, checked in by vboxsync, 2 years ago

Copyright year updates by scm.

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1/* $Id: RTThreadGetNativeState-linux.cpp 98103 2023-01-17 14:15:46Z vboxsync $ */
2/** @file
3 * IPRT - RTThreadGetNativeState, linux implementation.
4 */
5
6/*
7 * Copyright (C) 2010-2023 Oracle and/or its affiliates.
8 *
9 * This file is part of VirtualBox base platform packages, as
10 * available from https://www.virtualbox.org.
11 *
12 * This program is free software; you can redistribute it and/or
13 * modify it under the terms of the GNU General Public License
14 * as published by the Free Software Foundation, in version 3 of the
15 * License.
16 *
17 * This program is distributed in the hope that it will be useful, but
18 * WITHOUT ANY WARRANTY; without even the implied warranty of
19 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
20 * General Public License for more details.
21 *
22 * You should have received a copy of the GNU General Public License
23 * along with this program; if not, see <https://www.gnu.org/licenses>.
24 *
25 * The contents of this file may alternatively be used under the terms
26 * of the Common Development and Distribution License Version 1.0
27 * (CDDL), a copy of it is provided in the "COPYING.CDDL" file included
28 * in the VirtualBox distribution, in which case the provisions of the
29 * CDDL are applicable instead of those of the GPL.
30 *
31 * You may elect to license modified versions of this file under the
32 * terms and conditions of either the GPL or the CDDL or both.
33 *
34 * SPDX-License-Identifier: GPL-3.0-only OR CDDL-1.0
35 */
36
37
38/*********************************************************************************************************************************
39* Header Files *
40*********************************************************************************************************************************/
41#define LOG_GROUP RTLOGGROUP_PROCESS
42#include <iprt/thread.h>
43#include "internal/iprt.h"
44
45#include <iprt/assert.h>
46#include <iprt/ctype.h>
47#include <iprt/errcore.h>
48#include <iprt/string.h>
49
50#include "internal/thread.h"
51
52#include <unistd.h>
53#include <sys/fcntl.h>
54
55
56RTDECL(RTTHREADNATIVESTATE) RTThreadGetNativeState(RTTHREAD hThread)
57{
58 RTTHREADNATIVESTATE enmRet = RTTHREADNATIVESTATE_INVALID;
59 PRTTHREADINT pThread = rtThreadGet(hThread);
60 if (pThread)
61 {
62 enmRet = RTTHREADNATIVESTATE_UNKNOWN;
63
64 char szName[512];
65 RTStrPrintf(szName, sizeof(szName), "/proc/self/task/%u/stat", pThread->tid);
66 int fd = open(szName, O_RDONLY, 0);
67 if (fd >= 0)
68 {
69 ssize_t cch = read(fd, szName, sizeof(szName) - 1);
70 close(fd);
71 if (cch > 0)
72 {
73 szName[cch] = '\0';
74
75 /* skip the pid, the (comm name) and stop at the status char. */
76 const char *psz = szName;
77 while ( *psz
78 && ( *psz != ')'
79 || !RT_C_IS_SPACE(psz[1])
80 || !RT_C_IS_ALPHA(psz[2])
81 || !RT_C_IS_SPACE(psz[3])
82 )
83 )
84 psz++;
85 if (*psz == ')')
86 {
87 switch (psz[2])
88 {
89 case 'R': /* running */
90 enmRet = RTTHREADNATIVESTATE_RUNNING;
91 break;
92
93 case 'S': /* sleeping */
94 case 'D': /* disk sleeping */
95 enmRet = RTTHREADNATIVESTATE_BLOCKED;
96 break;
97
98 case 'T': /* stopped or tracking stop */
99 enmRet = RTTHREADNATIVESTATE_SUSPENDED;
100 break;
101
102 case 'Z': /* zombie */
103 case 'X': /* dead */
104 enmRet = RTTHREADNATIVESTATE_TERMINATED;
105 break;
106
107 default:
108 AssertMsgFailed(("state=%c\n", psz[2]));
109 enmRet = RTTHREADNATIVESTATE_UNKNOWN;
110 break;
111 }
112 }
113 else
114 AssertMsgFailed(("stat='%s'\n", szName));
115 }
116 }
117 rtThreadRelease(pThread);
118 }
119 return enmRet;
120}
121
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