88429768bb
adding an va_list interface to strace.
(strace::printf): Calls strace::vprntf now.
(strace_printf): New function providing an extern "C" interface to
trace output.
* include/sys/strace.h: Make plain C clean.
(class strace): Add `vprntf' method.
141 lines
5.2 KiB
C++
141 lines
5.2 KiB
C++
/* 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
|
|
|
|
#include <stdarg.h>
|
|
|
|
#ifdef __cplusplus
|
|
|
|
class strace
|
|
{
|
|
int vsprntf (char *buf, const char *func, const char *infmt, va_list ap);
|
|
void write (unsigned category, const char *buf, int count);
|
|
public:
|
|
int microseconds ();
|
|
int version;
|
|
int active;
|
|
int lmicrosec;
|
|
int execing;
|
|
strace() : version(1) {}
|
|
void prntf (unsigned, const char *func, const char *, ...);
|
|
void vprntf (unsigned, const char *func, const char *, va_list ap);
|
|
void wm (int message, int word, int lon);
|
|
};
|
|
|
|
extern strace strace;
|
|
|
|
#endif /* __cplusplus */
|
|
|
|
#define _STRACE_INTERFACE_ACTIVATE_ADDR -1
|
|
#define _STRACE_INTERFACE_ACTIVATE_ADDR1 -2
|
|
|
|
/* Bitmasks of tracing messages to print. */
|
|
|
|
#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_SYSTEM 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
|
|
#define _STRACE_NOTALL 0x80000 // don't include if _STRACE_ALL
|
|
|
|
#ifdef __cplusplus
|
|
extern "C" {
|
|
#endif
|
|
|
|
void small_printf (const char *, ...);
|
|
void strace_printf (unsigned, const char *func, const char *, ...);
|
|
|
|
#ifdef __cplusplus
|
|
}
|
|
#endif
|
|
|
|
#ifdef __cplusplus
|
|
|
|
#ifdef NOSTRACE
|
|
#define define_strace(c, f)
|
|
#define define_strace1(c, f)
|
|
#else
|
|
#ifdef NEW_MACRO_VARARGS
|
|
/* Output message to strace log */
|
|
|
|
#define define_strace0(c,...) \
|
|
do { \
|
|
if ((c & _STRACE_SYSTEM) || strace.active) \
|
|
strace.prntf (c, __PRETTY_FUNCTION__, __VA_ARGS__); \
|
|
} \
|
|
while (0)
|
|
|
|
#define define_strace(c, ...) define_strace0 (_STRACE_ ## c, __VA_ARGS__)
|
|
#define define_strace1(c, ...) define_strace0 ((_STRACE_ ## c | _STRACE_NOTALL), __VA_ARGS__)
|
|
|
|
#define debug_printf(...) define_strace (DEBUG, __VA_ARGS__)
|
|
#define paranoid_printf(...) define_strace (PARANOID, __VA_ARGS__)
|
|
#define select_printf(...) define_strace (SELECT, __VA_ARGS__)
|
|
#define sigproc_printf(...) define_strace (SIGP, __VA_ARGS__)
|
|
#define syscall_printf(...) define_strace (SYSCALL, __VA_ARGS__)
|
|
#define system_printf(...) define_strace (SYSTEM, __VA_ARGS__)
|
|
#define termios_printf(...) define_strace (TERMIOS, __VA_ARGS__)
|
|
#define wm_printf(...) define_strace (WM, __VA_ARGS__)
|
|
#define minimal_printf(...) define_strace1 (MINIMAL, __VA_ARGS__)
|
|
#define malloc_printf(...) define_strace1 (MALLOC, __VA_ARGS__)
|
|
#define thread_printf(...) define_strace1 (THREAD, __VA_ARGS__)
|
|
#else
|
|
#define strace_printf_wrap(what, fmt, args...) \
|
|
((void) ({\
|
|
if ((_STRACE_ ## what & _STRACE_SYSTEM) || strace.active) \
|
|
strace.prntf(_STRACE_ ## what, __PRETTY_FUNCTION__, fmt, ## args); \
|
|
0; \
|
|
}))
|
|
#define strace_printf_wrap1(what, fmt, args...) \
|
|
((void) ({\
|
|
if ((_STRACE_ ## what & _STRACE_SYSTEM) || strace.active) \
|
|
strace.prntf((_STRACE_ ## what) | _STRACE_NOTALL, __PRETTY_FUNCTION__, fmt, ## args); \
|
|
0; \
|
|
}))
|
|
|
|
#define debug_printf(fmt, args...) strace_printf_wrap(DEBUG, fmt , ## args)
|
|
#define paranoid_printf(fmt, args...) strace_printf_wrap(PARANOID, fmt , ## args)
|
|
#define select_printf(fmt, args...) strace_printf_wrap(SELECT, fmt , ## args)
|
|
#define sigproc_printf(fmt, args...) strace_printf_wrap(SIGP, fmt , ## args)
|
|
#define syscall_printf(fmt, args...) strace_printf_wrap(SYSCALL, fmt , ## args)
|
|
#define system_printf(fmt, args...) strace_printf_wrap(SYSTEM, fmt , ## args)
|
|
#define termios_printf(fmt, args...) strace_printf_wrap(TERMIOS, fmt , ## args)
|
|
#define wm_printf(fmt, args...) strace_printf_wrap(WM, 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)
|
|
#endif /*NEW_MACRO_VARARGS*/
|
|
#endif /*NOSTRACE*/
|
|
#endif /* __cplusplus */
|
|
#endif /* _SYS_STRACE_H */
|