VirtualBox

source: vbox/trunk/src/VBox/Runtime/r3/process.cpp@ 16684

Last change on this file since 16684 was 11836, checked in by vboxsync, 16 years ago

IPRT: Implemented RTR3Init*WithProgramPath. Added RTPathParse. Cleaned up the RTPathProgram and RTProcGetExecutableName implementations.

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  • Property svn:keywords set to Id
File size: 3.2 KB
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1/* $Id: process.cpp 11836 2008-08-29 16:52:20Z vboxsync $ */
2/** @file
3 * IPRT - Process, Common.
4 */
5
6/*
7 * Copyright (C) 2006-2007 Sun Microsystems, Inc.
8 *
9 * This file is part of VirtualBox Open Source Edition (OSE), as
10 * available from http://www.virtualbox.org. This file is free software;
11 * you can redistribute it and/or modify it under the terms of the GNU
12 * General Public License (GPL) as published by the Free Software
13 * Foundation, in version 2 as it comes in the "COPYING" file of the
14 * VirtualBox OSE distribution. VirtualBox OSE is distributed in the
15 * hope that it will be useful, but WITHOUT ANY WARRANTY of any kind.
16 *
17 * The contents of this file may alternatively be used under the terms
18 * of the Common Development and Distribution License Version 1.0
19 * (CDDL) only, as it comes in the "COPYING.CDDL" file of the
20 * VirtualBox OSE distribution, in which case the provisions of the
21 * CDDL are applicable instead of those of the GPL.
22 *
23 * You may elect to license modified versions of this file under the
24 * terms and conditions of either the GPL or the CDDL or both.
25 *
26 * Please contact Sun Microsystems, Inc., 4150 Network Circle, Santa
27 * Clara, CA 95054 USA or visit http://www.sun.com if you need
28 * additional information or have any questions.
29 */
30
31
32
33/*******************************************************************************
34* Header Files *
35*******************************************************************************/
36#include <iprt/process.h>
37#include <iprt/assert.h>
38#include <iprt/err.h>
39#include <iprt/string.h>
40#include "internal/process.h"
41#include "internal/thread.h"
42
43#ifdef RT_OS_WINDOWS
44# include <process.h>
45#else
46# include <unistd.h>
47#endif
48
49
50/**
51 * Get the identifier for the current process.
52 *
53 * @returns Process identifier.
54 */
55RTDECL(RTPROCESS) RTProcSelf(void)
56{
57 RTPROCESS Self = g_ProcessSelf;
58 if (Self != NIL_RTPROCESS)
59 return Self;
60
61 /* lazy init. */
62#ifdef _MSC_VER
63 Self = _getpid(); /* crappy ansi compiler */
64#else
65 Self = getpid();
66#endif
67 g_ProcessSelf = Self;
68 return Self;
69}
70
71
72/**
73 * Attempts to alter the priority of the current process.
74 *
75 * @returns iprt status code.
76 * @param enmPriority The new priority.
77 */
78RTR3DECL(int) RTProcSetPriority(RTPROCPRIORITY enmPriority)
79{
80 if (enmPriority > RTPROCPRIORITY_INVALID && enmPriority < RTPROCPRIORITY_LAST)
81 return rtThreadDoSetProcPriority(enmPriority);
82 AssertMsgFailed(("enmPriority=%d\n", enmPriority));
83 return VERR_INVALID_PARAMETER;
84}
85
86
87/**
88 * Gets the current priority of this process.
89 *
90 * @returns The priority (see RTPROCPRIORITY).
91 */
92RTR3DECL(RTPROCPRIORITY) RTProcGetPriority(void)
93{
94 return g_enmProcessPriority;
95}
96
97
98RTR3DECL(char *) RTProcGetExecutableName(char *pszExecName, size_t cchExecName)
99{
100 AssertReturn(g_szrtProcExePath[0] != '\0', NULL);
101
102 /*
103 * Calc the length and check if there is space before copying.
104 */
105 size_t cch = g_cchrtProcExePath;
106 if (cch <= cchExecName)
107 {
108 memcpy(pszExecName, g_szrtProcExePath, cch);
109 pszExecName[cch] = '\0';
110 return pszExecName;
111 }
112
113 AssertMsgFailed(("Buffer too small (%zu <= %zu)\n", cchExecName, cch));
114 return NULL;
115}
116
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