VirtualBox

source: vbox/trunk/src/VBox/Runtime/r3/process.cpp

Last change on this file was 106061, checked in by vboxsync, 3 months ago

Copyright year updates by scm.

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File size: 3.7 KB
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1/* $Id: process.cpp 106061 2024-09-16 14:03:52Z vboxsync $ */
2/** @file
3 * IPRT - Process, Common.
4 */
5
6/*
7 * Copyright (C) 2006-2024 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/*********************************************************************************************************************************
40* Header Files *
41*********************************************************************************************************************************/
42#include <iprt/process.h>
43#include <iprt/assert.h>
44#include <iprt/errcore.h>
45#include <iprt/string.h>
46#include "internal/process.h"
47#include "internal/thread.h"
48
49#ifdef RT_OS_WINDOWS
50# include <iprt/win/windows.h>
51#else
52# include <unistd.h>
53#endif
54
55
56/**
57 * Get the identifier for the current process.
58 *
59 * @returns Process identifier.
60 */
61RTDECL(RTPROCESS) RTProcSelf(void)
62{
63 RTPROCESS Self = g_ProcessSelf;
64 if (Self != NIL_RTPROCESS)
65 return Self;
66
67 /* lazy init. */
68#ifdef _MSC_VER
69 Self = GetCurrentProcessId(); /* since NT 3.1, not 3.51+ as listed on geoffchappell.com */
70#else
71 Self = getpid();
72#endif
73 g_ProcessSelf = Self;
74 return Self;
75}
76
77
78/**
79 * Attempts to alter the priority of the current process.
80 *
81 * @returns iprt status code.
82 * @param enmPriority The new priority.
83 */
84RTR3DECL(int) RTProcSetPriority(RTPROCPRIORITY enmPriority)
85{
86 if (enmPriority > RTPROCPRIORITY_INVALID && enmPriority < RTPROCPRIORITY_LAST)
87 return rtThreadDoSetProcPriority(enmPriority);
88 AssertMsgFailed(("enmPriority=%d\n", enmPriority));
89 return VERR_INVALID_PARAMETER;
90}
91
92
93/**
94 * Gets the current priority of this process.
95 *
96 * @returns The priority (see RTPROCPRIORITY).
97 */
98RTR3DECL(RTPROCPRIORITY) RTProcGetPriority(void)
99{
100 return g_enmProcessPriority;
101}
102
103
104RTR3DECL(char *) RTProcGetExecutablePath(char *pszExecPath, size_t cbExecPath)
105{
106 if (RT_UNLIKELY(g_szrtProcExePath[0] == '\0'))
107 return NULL;
108
109 /*
110 * Calc the length and check if there is space before copying.
111 */
112 size_t cch = g_cchrtProcExePath;
113 if (cch < cbExecPath)
114 {
115 memcpy(pszExecPath, g_szrtProcExePath, cch);
116 pszExecPath[cch] = '\0';
117 return pszExecPath;
118 }
119
120 AssertMsgFailed(("Buffer too small (%zu <= %zu)\n", cbExecPath, cch));
121 return NULL;
122}
123
124
125RTR3DECL(const char *) RTProcExecutablePath(void)
126{
127 return g_szrtProcExePath;
128}
129
130
131RTR3DECL(const char *) RTProcShortName(void)
132{
133 return &g_szrtProcExePath[g_offrtProcName];
134}
135
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