1 | /* $Id: process.cpp 76452 2018-12-25 01:41:25Z vboxsync $ */
|
---|
2 | /** @file
|
---|
3 | * IPRT - Process, Common.
|
---|
4 | */
|
---|
5 |
|
---|
6 | /*
|
---|
7 | * Copyright (C) 2006-2017 Oracle Corporation
|
---|
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 |
|
---|
27 |
|
---|
28 |
|
---|
29 | /*********************************************************************************************************************************
|
---|
30 | * Header Files *
|
---|
31 | *********************************************************************************************************************************/
|
---|
32 | #include <iprt/process.h>
|
---|
33 | #include <iprt/assert.h>
|
---|
34 | #include <iprt/errcore.h>
|
---|
35 | #include <iprt/string.h>
|
---|
36 | #include "internal/process.h"
|
---|
37 | #include "internal/thread.h"
|
---|
38 |
|
---|
39 | #ifdef RT_OS_WINDOWS
|
---|
40 | # include <process.h>
|
---|
41 | #else
|
---|
42 | # include <unistd.h>
|
---|
43 | #endif
|
---|
44 |
|
---|
45 |
|
---|
46 | /**
|
---|
47 | * Get the identifier for the current process.
|
---|
48 | *
|
---|
49 | * @returns Process identifier.
|
---|
50 | */
|
---|
51 | RTDECL(RTPROCESS) RTProcSelf(void)
|
---|
52 | {
|
---|
53 | RTPROCESS Self = g_ProcessSelf;
|
---|
54 | if (Self != NIL_RTPROCESS)
|
---|
55 | return Self;
|
---|
56 |
|
---|
57 | /* lazy init. */
|
---|
58 | #ifdef _MSC_VER
|
---|
59 | Self = _getpid(); /* crappy ansi compiler */
|
---|
60 | #else
|
---|
61 | Self = getpid();
|
---|
62 | #endif
|
---|
63 | g_ProcessSelf = Self;
|
---|
64 | return Self;
|
---|
65 | }
|
---|
66 |
|
---|
67 |
|
---|
68 | /**
|
---|
69 | * Attempts to alter the priority of the current process.
|
---|
70 | *
|
---|
71 | * @returns iprt status code.
|
---|
72 | * @param enmPriority The new priority.
|
---|
73 | */
|
---|
74 | RTR3DECL(int) RTProcSetPriority(RTPROCPRIORITY enmPriority)
|
---|
75 | {
|
---|
76 | if (enmPriority > RTPROCPRIORITY_INVALID && enmPriority < RTPROCPRIORITY_LAST)
|
---|
77 | return rtThreadDoSetProcPriority(enmPriority);
|
---|
78 | AssertMsgFailed(("enmPriority=%d\n", enmPriority));
|
---|
79 | return VERR_INVALID_PARAMETER;
|
---|
80 | }
|
---|
81 |
|
---|
82 |
|
---|
83 | /**
|
---|
84 | * Gets the current priority of this process.
|
---|
85 | *
|
---|
86 | * @returns The priority (see RTPROCPRIORITY).
|
---|
87 | */
|
---|
88 | RTR3DECL(RTPROCPRIORITY) RTProcGetPriority(void)
|
---|
89 | {
|
---|
90 | return g_enmProcessPriority;
|
---|
91 | }
|
---|
92 |
|
---|
93 |
|
---|
94 | RTR3DECL(char *) RTProcGetExecutablePath(char *pszExecPath, size_t cbExecPath)
|
---|
95 | {
|
---|
96 | if (RT_UNLIKELY(g_szrtProcExePath[0] == '\0'))
|
---|
97 | return NULL;
|
---|
98 |
|
---|
99 | /*
|
---|
100 | * Calc the length and check if there is space before copying.
|
---|
101 | */
|
---|
102 | size_t cch = g_cchrtProcExePath;
|
---|
103 | if (cch < cbExecPath)
|
---|
104 | {
|
---|
105 | memcpy(pszExecPath, g_szrtProcExePath, cch);
|
---|
106 | pszExecPath[cch] = '\0';
|
---|
107 | return pszExecPath;
|
---|
108 | }
|
---|
109 |
|
---|
110 | AssertMsgFailed(("Buffer too small (%zu <= %zu)\n", cbExecPath, cch));
|
---|
111 | return NULL;
|
---|
112 | }
|
---|
113 |
|
---|
114 |
|
---|
115 | RTR3DECL(const char *) RTProcShortName(void)
|
---|
116 | {
|
---|
117 | return &g_szrtProcExePath[g_offrtProcName];
|
---|
118 | }
|
---|
119 |
|
---|