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1 /**************************************************************************
2  *
3  * Copyright 2010 Vmware, Inc.
4  * All Rights Reserved.
5  *
6  * Permission is hereby granted, free of charge, to any person obtaining a
7  * copy of this software and associated documentation files (the
8  * "Software"), to deal in the Software without restriction, including
9  * without limitation the rights to use, copy, modify, merge, publish,
10  * distribute, sub license, and/or sell copies of the Software, and to
11  * permit persons to whom the Software is furnished to do so, subject to
12  * the following conditions:
13  *
14  * The above copyright notice and this permission notice (including the
15  * next paragraph) shall be included in all copies or substantial portions
16  * of the Software.
17  *
18  * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
19  * OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
20  * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NON-INFRINGEMENT.
21  * IN NO EVENT SHALL VMWARE AND/OR ITS SUPPLIERS BE LIABLE FOR
22  * ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT,
23  * TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE
24  * SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
25  *
26  **************************************************************************/
27 
28 
29 /*
30  * Miscellaneous OS services.
31  */
32 
33 
34 #ifndef _OS_MISC_H_
35 #define _OS_MISC_H_
36 
37 
38 #include "pipe/p_compiler.h"
39 
40 
41 #if defined(PIPE_OS_UNIX)
42 #  include <signal.h> /* for kill() */
43 #  include <unistd.h> /* getpid() */
44 #endif
45 
46 #ifdef __GNUC__
47 #define UNUSED __attribute__((unused))
48 #define MAYBE_UNUSED __attribute__((unused))
49 #else
50 #define UNUSED
51 #define MAYBE_UNUSED
52 #endif
53 
54 #ifdef  __cplusplus
55 extern "C" {
56 #endif
57 
58 
59 /*
60  * Trap into the debugger.
61  */
62 #if (defined(PIPE_ARCH_X86) || defined(PIPE_ARCH_X86_64)) && defined(PIPE_CC_GCC)
63 #  define os_break() __asm("int3")
64 #elif defined(PIPE_CC_MSVC)
65 #  define os_break()  __debugbreak()
66 #elif defined(PIPE_OS_UNIX)
67 #  define os_break() kill(getpid(), SIGTRAP)
68 #else
69 #  define os_break() abort()
70 #endif
71 
72 
73 /*
74  * Abort the program.
75  */
76 #if defined(DEBUG)
77 #  define os_abort() os_break()
78 #else
79 #  define os_abort() abort()
80 #endif
81 
82 
83 /*
84  * Output a message. Message should preferably end in a newline.
85  */
86 void
87 os_log_message(const char *message);
88 
89 
90 /*
91  * Get an option. Should return NULL if specified option is not set.
92  */
93 const char *
94 os_get_option(const char *name);
95 
96 
97 #ifdef	__cplusplus
98 }
99 #endif
100 
101 
102 #endif /* _OS_MISC_H_ */
103