3 /* This file contains routines for tracing system calls and other internal
6 When tracing system calls, try to use the same style throughout:
8 result = syscall (arg1, arg2, arg3) [optional extra stuff]
10 If a system call can block (eg: read, write, wait), print another message
11 before hanging so the user will know why the program has stopped.
13 Note: __seterrno will also print a trace message. Have that printed
14 *first*. This will make it easy to always know what __seterrno is
15 refering to. For the same reason, try not to have __seterrno messages
27 int vsprntf (char *buf, const char *func, const char *infmt, va_list ap);
28 void write (unsigned category, const char *buf, int count);
33 strace() : version(1) {}
34 void prntf (unsigned, const char *func, const char *, ...);
35 void wm (int message, int word, int lon);
40 #define _STRACE_INTERFACE_ACTIVATE_ADDR -1
41 #define _STRACE_INTERFACE_ACTIVATE_ADDR1 -2
43 /* Bitmasks of tracing messages to print. */
45 #define _STRACE_ALL 0x00001 // so behaviour of strace=1 is unchanged
46 #define _STRACE_FLUSH 0x00002 // flush output buffer after every message
47 #define _STRACE_INHERIT 0x00004 // children inherit mask from parent
48 #define _STRACE_UHOH 0x00008 // unusual or weird phenomenon
49 #define _STRACE_SYSCALL 0x00010 // system calls
50 #define _STRACE_STARTUP 0x00020 // argc/envp printout at startup
51 #define _STRACE_DEBUG 0x00040 // info to help debugging
52 #define _STRACE_PARANOID 0x00080 // paranoid info
53 #define _STRACE_TERMIOS 0x00100 // info for debugging termios stuff
54 #define _STRACE_SELECT 0x00200 // info on ugly select internals
55 #define _STRACE_WM 0x00400 // trace windows messages (enable _strace_wm)
56 #define _STRACE_SIGP 0x00800 // trace signal and process handling
57 #define _STRACE_MINIMAL 0x01000 // very minimal strace output
58 #define _STRACE_EXITDUMP 0x04000 // dump strace cache on exit
59 #define _STRACE_SYSTEM 0x08000 // cache strace messages
60 #define _STRACE_NOMUTEX 0x10000 // don't use mutex for synchronization
61 #define _STRACE_MALLOC 0x20000 // trace malloc calls
62 #define _STRACE_THREAD 0x40000 // thread-locking calls
63 #define _STRACE_NOTALL 0x80000 // don't include if _STRACE_ALL
65 extern "C" void small_printf (const char *, ...);
68 #define define_strace(c, f)
69 #define define_strace1(c, f)
71 #ifdef NEW_MACRO_VARARGS
72 /* Output message to strace log */
74 #define define_strace0(c,...) \
76 if ((c & _STRACE_SYSTEM) || strace.active) \
77 strace.prntf (c, __PRETTY_FUNCTION__, __VA_ARGS__); \
81 #define define_strace(c, ...) define_strace0 (_STRACE_ ## c, __VA_ARGS__)
82 #define define_strace1(c, ...) define_strace0 ((_STRACE_ ## c | _STRACE_NOTALL), __VA_ARGS__)
84 #define debug_printf(...) define_strace (DEBUG, __VA_ARGS__)
85 #define paranoid_printf(...) define_strace (PARANOID, __VA_ARGS__)
86 #define select_printf(...) define_strace (SELECT, __VA_ARGS__)
87 #define sigproc_printf(...) define_strace (SIGP, __VA_ARGS__)
88 #define syscall_printf(...) define_strace (SYSCALL, __VA_ARGS__)
89 #define system_printf(...) define_strace (SYSTEM, __VA_ARGS__)
90 #define termios_printf(...) define_strace (TERMIOS, __VA_ARGS__)
91 #define wm_printf(...) define_strace (WM, __VA_ARGS__)
92 #define minimal_printf(...) define_strace1 (MINIMAL, __VA_ARGS__)
93 #define malloc_printf(...) define_strace1 (MALLOC, __VA_ARGS__)
94 #define thread_printf(...) define_strace1 (THREAD, __VA_ARGS__)
96 #define strace_printf_wrap(what, fmt, args...) \
98 if ((_STRACE_ ## what & _STRACE_SYSTEM) || strace.active) \
99 strace.prntf(_STRACE_ ## what, __PRETTY_FUNCTION__, fmt, ## args); \
102 #define strace_printf_wrap1(what, fmt, args...) \
104 if ((_STRACE_ ## what & _STRACE_SYSTEM) || strace.active) \
105 strace.prntf((_STRACE_ ## what) | _STRACE_NOTALL, __PRETTY_FUNCTION__, fmt, ## args); \
109 #define debug_printf(fmt, args...) strace_printf_wrap(DEBUG, fmt , ## args)
110 #define paranoid_printf(fmt, args...) strace_printf_wrap(PARANOID, fmt , ## args)
111 #define select_printf(fmt, args...) strace_printf_wrap(SELECT, fmt , ## args)
112 #define sigproc_printf(fmt, args...) strace_printf_wrap(SIGP, fmt , ## args)
113 #define syscall_printf(fmt, args...) strace_printf_wrap(SYSCALL, fmt , ## args)
114 #define system_printf(fmt, args...) strace_printf_wrap(SYSTEM, fmt , ## args)
115 #define termios_printf(fmt, args...) strace_printf_wrap(TERMIOS, fmt , ## args)
116 #define wm_printf(fmt, args...) strace_printf_wrap(WM, fmt , ## args)
117 #define minimal_printf(fmt, args...) strace_printf_wrap1(MINIMAL, fmt , ## args)
118 #define malloc_printf(fmt, args...) strace_printf_wrap1(MALLOC, fmt , ## args)
119 #define thread_printf(fmt, args...) strace_printf_wrap1(THREAD, fmt , ## args)
120 #endif /*NEW_MACRO_VARARGS*/
122 #endif /* _SYS_STRACE_H */