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/* $Id: process.cpp $ */
/** @file
* IPRT - Process, Common.
*/
/*
* Copyright (C) 2006-2020 Oracle Corporation
*
* This file is part of VirtualBox Open Source Edition (OSE), as
* available from http://www.virtualbox.org. This file is free software;
* you can redistribute it and/or modify it under the terms of the GNU
* General Public License (GPL) as published by the Free Software
* Foundation, in version 2 as it comes in the "COPYING" file of the
* VirtualBox OSE distribution. VirtualBox OSE is distributed in the
* hope that it will be useful, but WITHOUT ANY WARRANTY of any kind.
*
* The contents of this file may alternatively be used under the terms
* of the Common Development and Distribution License Version 1.0
* (CDDL) only, as it comes in the "COPYING.CDDL" file of the
* VirtualBox OSE 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.
*/
/*********************************************************************************************************************************
* Header Files *
*********************************************************************************************************************************/
#include <iprt/process.h>
#include <iprt/assert.h>
#include <iprt/errcore.h>
#include <iprt/string.h>
#include "internal/process.h"
#include "internal/thread.h"
#ifdef RT_OS_WINDOWS
# include <process.h>
#else
# include <unistd.h>
#endif
/**
* Get the identifier for the current process.
*
* @returns Process identifier.
*/
RTDECL(RTPROCESS) RTProcSelf(void)
{
RTPROCESS Self = g_ProcessSelf;
if (Self != NIL_RTPROCESS)
return Self;
/* lazy init. */
#ifdef _MSC_VER
Self = _getpid(); /* crappy ansi compiler */
#else
Self = getpid();
#endif
g_ProcessSelf = Self;
return Self;
}
/**
* Attempts to alter the priority of the current process.
*
* @returns iprt status code.
* @param enmPriority The new priority.
*/
RTR3DECL(int) RTProcSetPriority(RTPROCPRIORITY enmPriority)
{
if (enmPriority > RTPROCPRIORITY_INVALID && enmPriority < RTPROCPRIORITY_LAST)
return rtThreadDoSetProcPriority(enmPriority);
AssertMsgFailed(("enmPriority=%d\n", enmPriority));
return VERR_INVALID_PARAMETER;
}
/**
* Gets the current priority of this process.
*
* @returns The priority (see RTPROCPRIORITY).
*/
RTR3DECL(RTPROCPRIORITY) RTProcGetPriority(void)
{
return g_enmProcessPriority;
}
RTR3DECL(char *) RTProcGetExecutablePath(char *pszExecPath, size_t cbExecPath)
{
if (RT_UNLIKELY(g_szrtProcExePath[0] == '\0'))
return NULL;
/*
* Calc the length and check if there is space before copying.
*/
size_t cch = g_cchrtProcExePath;
if (cch < cbExecPath)
{
memcpy(pszExecPath, g_szrtProcExePath, cch);
pszExecPath[cch] = '\0';
return pszExecPath;
}
AssertMsgFailed(("Buffer too small (%zu <= %zu)\n", cbExecPath, cch));
return NULL;
}
RTR3DECL(const char *) RTProcExecutablePath(void)
{
return g_szrtProcExePath;
}
RTR3DECL(const char *) RTProcShortName(void)
{
return &g_szrtProcExePath[g_offrtProcName];
}
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