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/* $Id: RTThreadGetNativeState-linux.cpp $ */
/** @file
* IPRT - RTThreadGetNativeState, linux implementation.
*/
/*
* Copyright (C) 2010-2023 Oracle and/or its affiliates.
*
* This file is part of VirtualBox base platform packages, as
* available from https://www.virtualbox.org.
*
* This program is free software; you can redistribute it and/or
* modify it under the terms of the GNU General Public License
* as published by the Free Software Foundation, in version 3 of the
* License.
*
* This program is distributed in the hope that it will be useful, but
* WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program; if not, see <https://www.gnu.org/licenses>.
*
* The contents of this file may alternatively be used under the terms
* of the Common Development and Distribution License Version 1.0
* (CDDL), a copy of it is provided in the "COPYING.CDDL" file included
* in the VirtualBox distribution, in which case the provisions of the
* CDDL are applicable instead of those of the GPL.
*
* You may elect to license modified versions of this file under the
* terms and conditions of either the GPL or the CDDL or both.
*
* SPDX-License-Identifier: GPL-3.0-only OR CDDL-1.0
*/
/*********************************************************************************************************************************
* Header Files *
*********************************************************************************************************************************/
#define LOG_GROUP RTLOGGROUP_PROCESS
#include <iprt/thread.h>
#include "internal/iprt.h"
#include <iprt/assert.h>
#include <iprt/ctype.h>
#include <iprt/errcore.h>
#include <iprt/string.h>
#include "internal/thread.h"
#include <unistd.h>
#include <sys/fcntl.h>
RTDECL(RTTHREADNATIVESTATE) RTThreadGetNativeState(RTTHREAD hThread)
{
RTTHREADNATIVESTATE enmRet = RTTHREADNATIVESTATE_INVALID;
PRTTHREADINT pThread = rtThreadGet(hThread);
if (pThread)
{
enmRet = RTTHREADNATIVESTATE_UNKNOWN;
char szName[512];
RTStrPrintf(szName, sizeof(szName), "/proc/self/task/%u/stat", pThread->tid);
int fd = open(szName, O_RDONLY, 0);
if (fd >= 0)
{
ssize_t cch = read(fd, szName, sizeof(szName) - 1);
close(fd);
if (cch > 0)
{
szName[cch] = '\0';
/* skip the pid, the (comm name) and stop at the status char. */
const char *psz = szName;
while ( *psz
&& ( *psz != ')'
|| !RT_C_IS_SPACE(psz[1])
|| !RT_C_IS_ALPHA(psz[2])
|| !RT_C_IS_SPACE(psz[3])
)
)
psz++;
if (*psz == ')')
{
switch (psz[2])
{
case 'R': /* running */
enmRet = RTTHREADNATIVESTATE_RUNNING;
break;
case 'S': /* sleeping */
case 'D': /* disk sleeping */
enmRet = RTTHREADNATIVESTATE_BLOCKED;
break;
case 'T': /* stopped or tracking stop */
enmRet = RTTHREADNATIVESTATE_SUSPENDED;
break;
case 'Z': /* zombie */
case 'X': /* dead */
enmRet = RTTHREADNATIVESTATE_TERMINATED;
break;
default:
AssertMsgFailed(("state=%c\n", psz[2]));
enmRet = RTTHREADNATIVESTATE_UNKNOWN;
break;
}
}
else
AssertMsgFailed(("stat='%s'\n", szName));
}
}
rtThreadRelease(pThread);
}
return enmRet;
}
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