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- /* sys/strace.h */
-
- /* This file contains routines for tracing system calls and other internal
- phenomenon.
-
- When tracing system calls, try to use the same style throughout:
-
- result = syscall (arg1, arg2, arg3) [optional extra stuff]
-
- If a system call can block (eg: read, write, wait), print another message
- before hanging so the user will know why the program has stopped.
-
- Note: __seterrno will also print a trace message. Have that printed
- *first*. This will make it easy to always know what __seterrno is
- refering to. For the same reason, try not to have __seterrno messages
- printed alone.
- */
-
- #ifndef _SYS_STRACE_H
- #define _SYS_STRACE_H
-
- #ifdef __cplusplus
- extern "C" {
- #endif
-
- /* Bitmasks of tracing messages to print. */
-
- #ifdef NOSTRACE
- #define strace_printf(fmt...) 0
- #define strace_printf_wrap(fmt...) 0
- #define strace() 0
- #define strace_wm(msg...) 0
- #else
- #define _STRACE_ALL 0x00001 // so behaviour of strace=1 is unchanged
- #define _STRACE_FLUSH 0x00002 // flush output buffer after every message
- #define _STRACE_INHERIT 0x00004 // children inherit mask from parent
- #define _STRACE_UHOH 0x00008 // unusual or weird phenomenon
- #define _STRACE_SYSCALL 0x00010 // system calls
- #define _STRACE_STARTUP 0x00020 // argc/envp printout at startup
- #define _STRACE_DEBUG 0x00040 // info to help debugging
- #define _STRACE_PARANOID 0x00080 // paranoid info
- #define _STRACE_TERMIOS 0x00100 // info for debugging termios stuff
- #define _STRACE_SELECT 0x00200 // info on ugly select internals
- #define _STRACE_WM 0x00400 // trace windows messages (enable _strace_wm)
- #define _STRACE_SIGP 0x00800 // trace signal and process handling
- #define _STRACE_MINIMAL 0x01000 // very minimal strace output
- #define _STRACE_EXITDUMP 0x04000 // dump strace cache on exit
- #define _STRACE_CACHE 0x08000 // cache strace messages
- #define _STRACE_NOMUTEX 0x10000 // don't use mutex for synchronization
- #define _STRACE_MALLOC 0x20000 // trace malloc calls
- #define _STRACE_THREAD 0x40000 // thread-locking calls
-
- /* Return the current strace mask. */
- /* Dump cached strace data, if any */
- void strace_dump (void);
-
- /* Output message to strace log */
- void strace_printf (const char *, ...);
- void __system_printf (const char *, ...);
- void small_printf (const char *, ...);
-
- #define system_printf(fmt, args...) \
- ({\
- __system_printf("%F: " fmt, __PRETTY_FUNCTION__ , ## args); \
- })
-
- void _strace_wm (int __message, int __word, int __lon);
-
- #define strace() (myself->strace_mask)
-
- #define strace_printf_wrap(what, fmt, args...) \
- ({\
- if (strace () & ((_STRACE_ ## what) | 1)) \
- strace_printf("%F: " fmt, __PRETTY_FUNCTION__ , ## args); \
- })
- #define strace_printf_wrap1(what, fmt, args...) \
- ({\
- if (strace () & ((_STRACE_ ## what))) \
- strace_printf("%F: " fmt, __PRETTY_FUNCTION__ , ## args); \
- })
- #endif /*NOSTRACE*/
-
- #define debug_printf(fmt, args...) strace_printf_wrap(DEBUG, fmt , ## args)
- #define syscall_printf(fmt, args...) strace_printf_wrap(SYSCALL, fmt , ## args)
- #define paranoid_printf(fmt, args...) strace_printf_wrap(PARANOID, fmt , ## args)
- #define termios_printf(fmt, args...) strace_printf_wrap(TERMIOS, fmt , ## args)
- #define select_printf(fmt, args...) strace_printf_wrap(SELECT, fmt , ## args)
- #define wm_printf(fmt, args...) strace_printf_wrap(WM, fmt , ## args)
- #define sigproc_printf(fmt, args...) strace_printf_wrap(SIGP, fmt , ## args)
- #define minimal_printf(fmt, args...) strace_printf_wrap1(MINIMAL, fmt , ## args)
- #define malloc_printf(fmt, args...) strace_printf_wrap1(MALLOC, fmt , ## args)
- #define thread_printf(fmt, args...) strace_printf_wrap1(THREAD, fmt , ## args)
-
- #ifdef __cplusplus
- }
- #endif
-
- #endif /* _SYS_STRACE_H */
-