haiku/headers/private/userlandfs/shared/Debug.h

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#ifndef USERLAND_FS_DEBUG_H
#define USERLAND_FS_DEBUG_H
/* Debug - debug stuff
**
** Initial version by Axel Dörfler, axeld@pinc-software.de
** This file may be used under the terms of the OpenBeOS License.
*/
#include <string.h>
#if !USER
# include <KernelExport.h>
#endif
#include <OS.h>
#include <SupportDefs.h>
// define all macros we work with -- undefined macros are set to defaults
#ifndef USER
# define USER 0
#endif
#ifndef DEBUG
# define DEBUG 0
#endif
#if !DEBUG
# undef DEBUG_PRINT
# define DEBUG_PRINT 0
#endif
#ifndef DEBUG_PRINT
# define DEBUG_PRINT 0
#endif
#ifndef DEBUG_APP
# define DEBUG_APP "debug"
#endif
#ifndef DEBUG_PRINT_FILE
# define DEBUG_PRINT_FILE "/var/log/" DEBUG_APP ".log"
#endif
// define the debug output function
#if USER
# include <stdio.h>
# if DEBUG_PRINT
# define __out dbg_printf
# else
# define __out printf
# endif
#else
# include <KernelExport.h>
# include <null.h>
# if DEBUG_PRINT
# define __out dbg_printf
# else
# define __out dprintf
# endif
#endif
// define the PANIC() macro
#ifndef PANIC
# if USER
# define PANIC(str) debugger(str)
# else
# define PANIC(str) panic(str)
# endif
#endif
// functions exported by this module
status_t init_debugging();
status_t exit_debugging();
void dbg_printf_begin();
void dbg_printf_end();
#if DEBUG_PRINT
void dbg_printf(const char *format,...);
#else
static inline void dbg_printf(const char *,...) {}
#endif
// Short overview over the debug output macros:
// PRINT()
// is for general messages that very unlikely should appear in a release build
// FATAL()
// this is for fatal messages, when something has really gone wrong
// INFORM()
// general information, as disk size, etc.
// REPORT_ERROR(status_t)
// prints out error information
// RETURN_ERROR(status_t)
// calls REPORT_ERROR() and return the value
// D()
// the statements in D() are only included if DEBUG is defined
#if __MWERKS__
# define __FUNCTION__ ""
#endif
#define DEBUG_THREAD find_thread(NULL)
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#define DEBUG_CONTEXT(x) { dbg_printf_begin(); __out(DEBUG_APP " [%" \
B_PRIdBIGTIME ": %5ld] ", system_time(), DEBUG_THREAD); x; dbg_printf_end(); }
#define DEBUG_CONTEXT_FUNCTION(prefix, x) { dbg_printf_begin(); \
__out(DEBUG_APP " [%" B_PRIdBIGTIME ": %5ld] %s()" prefix, system_time(), \
DEBUG_THREAD, __FUNCTION__); x; dbg_printf_end(); }
#define DEBUG_CONTEXT_LINE(x) { dbg_printf_begin(); __out(DEBUG_APP " [%" \
B_PRIdBIGTIME ": %5ld] %s():%d: ", system_time(), DEBUG_THREAD, \
__FUNCTION__, __LINE__); x; dbg_printf_end(); }
#define TPRINT(x) DEBUG_CONTEXT( __out x )
#define TREPORT_ERROR(status) DEBUG_CONTEXT_LINE( __out("%s\n", strerror(status)) )
#define TRETURN_ERROR(err) { status_t _status = err; if (_status < B_OK) TREPORT_ERROR(_status); return _status;}
#define TSET_ERROR(var, err) { status_t _status = err; if (_status < B_OK) TREPORT_ERROR(_status); var = _status; }
#define TFUNCTION(x) DEBUG_CONTEXT_FUNCTION( ": ", __out x )
#define TFUNCTION_START() DEBUG_CONTEXT_FUNCTION( "\n", )
#define TFUNCTION_END() DEBUG_CONTEXT_FUNCTION( " done\n", )
#if DEBUG
#define PRINT(x) TPRINT(x)
#define REPORT_ERROR(status) TREPORT_ERROR(status)
#define RETURN_ERROR(err) TRETURN_ERROR(err)
#define SET_ERROR(var, err) TSET_ERROR(var, err)
#define FATAL(x) DEBUG_CONTEXT( __out x )
#define ERROR(x) DEBUG_CONTEXT( __out x )
#define WARN(x) DEBUG_CONTEXT( __out x )
#define INFORM(x) DEBUG_CONTEXT( __out x )
#define FUNCTION(x) TFUNCTION(x)
#define FUNCTION_START() TFUNCTION_START()
#define FUNCTION_END() TFUNCTION_END()
#define DARG(x) x
#define D(x) {x;};
#else
#define PRINT(x) ;
#define REPORT_ERROR(status) ;
#define RETURN_ERROR(status) return status;
#define SET_ERROR(var, err) var = err;
#define FATAL(x) DEBUG_CONTEXT( __out x )
#define ERROR(x) DEBUG_CONTEXT( __out x )
#define WARN(x) DEBUG_CONTEXT( __out x )
#define INFORM(x) DEBUG_CONTEXT( __out x )
#define FUNCTION(x) ;
#define FUNCTION_START() ;
#define FUNCTION_END() ;
#define DARG(x)
#define D(x) ;
#endif
#ifndef TOUCH
#define TOUCH(var) (void)var
#endif
#endif /* USERLAND_FS_DEBUG_H */