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/* sys/strace.h
Copyright 1996, 1997, 1998, 1999, 2000, 2001 Red Hat, Inc.
This file is part of Cygwin.
This software is a copyrighted work licensed under the terms of the
Cygwin license. Please consult the file "CYGWIN_LICENSE" for
details. */
/* 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;
int inited;
void hello ();
void prntf (unsigned, const char *func, const char *, ...) /*__attribute__ ((regparm(3)))*/;
void vprntf (unsigned, const char *func, const char *, va_list ap) /*__attribute__ ((regparm(3)))*/;
void wm (int message, int word, int lon) __attribute__ ((regparm(3)));
};
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
#if defined (DEBUGGING)
# define _STRACE_ON strace.active = 1;
# define _STRACE_OFF strace.active = 0;
#else
# define _STRACE_ON
# define _STRACE_OFF
#endif
#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 */
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