Renamed Debug.{h,cpp} to UdfDebug.{h,cpp} to cut down on

the proliferation of files named Debug.*


git-svn-id: file:///srv/svn/repos/haiku/trunk/current@3218 a95241bf-73f2-0310-859d-f6bbb57e9c96
This commit is contained in:
Tyler Dauwalder 2003-05-12 21:27:28 +00:00
parent 5c3a520419
commit fe89a5bae9
4 changed files with 368 additions and 119 deletions

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/* Debug - debug stuff
**
** UDF modifications by Tyler Dauwalder, tyler@dauwalder.net
** Initial version by Axel Dörfler, axeld@pinc-software.de
** Some code is based on work previously done by Marcus Overhagen
**
** This file may be used under the terms of the OpenBeOS License.
*/
#include "Debug.h"
//#include "BPlusTree.h"
#include <KernelExport.h>
#include <time.h>
#define Print __out

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#ifndef DEBUG_H
#define DEBUG_H
/* Debug - debug stuff
**
** UDF modifications by Tyler Dauwalder, tyler@dauwalder.net
** Initial version by Axel Dörfler, axeld@pinc-software.de
** This file may be used under the terms of the OpenBeOS License.
*/
#include <KernelExport.h>
#ifdef DEBUG
# include <string.h>
#endif
#ifdef USER
# include <stdio.h>
# define __out printf
#else
# include <null.h>
# define __out dprintf
#endif
// Which debugger should be used when?
// The DEBUGGER() macro actually has no effect if DEBUG is not defined,
// use the DIE() macro if you really want to die.
#ifdef DEBUG
# ifdef USER
# define DEBUGGER(x) debugger x
# else
# define DEBUGGER(x) kernel_debugger x
# endif
#else
# define DEBUGGER(x) ;
#endif
#ifdef USER
# define DIE(x) debugger x
#else
# define DIE(x) kernel_debugger x
#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
#ifdef DEBUG
#define PRINT(x) { __out("udf: "); __out x; }
#define REPORT_ERROR(status) \
__out("udf: %s:%d: %s\n", __FUNCTION__, __LINE__, strerror(status));
#define RETURN_ERROR(err) { status_t _status = err; if (_status < B_OK) REPORT_ERROR(_status); return _status;}
#define FATAL(x) { __out("udf: "); __out x; }
#define INFORM(x) { __out("udf: "); __out x; }
#define FUNCTION() __out("udf: %s()\n",__FUNCTION__);
#define FUNCTION_START(x) { __out("udf: %s() ",__FUNCTION__); __out x; }
// #define FUNCTION() ;
// #define FUNCTION_START(x) ;
#define D(x) {x;};
#define ASSERT(x) { if (!(x)) DEBUGGER(("udf: assert failed: " #x "\n")); }
#else
#define PRINT(x) ;
#define REPORT_ERROR(status) ;
#define RETURN_ERROR(status) return status;
#define FATAL(x) { __out("udf: "); __out x; }
#define INFORM(x) { __out("udf: "); __out x; }
#define FUNCTION() ;
#define FUNCTION_START(x) ;
#define D(x) ;
#define ASSERT(x) ;
#endif
#ifdef DEBUG
// struct block_run;
// struct bplustree_header;
// struct bplustree_node;
// struct data_stream;
// struct udf_inode;
// struct disk_super_block;
// class Volume;
// some structure dump functions
// extern void dump_block_run(const char *prefix, block_run &run);
// extern void dump_super_block(disk_super_block *superBlock);
// extern void dump_data_stream(data_stream *stream);
// extern void dump_inode(bfs_inode *inode);
// extern void dump_bplustree_header(bplustree_header *header);
// extern void dump_bplustree_node(bplustree_node *node,bplustree_header *header = NULL,Volume *volume = NULL);
// extern void dump_block(const char *buffer, int size);
#endif
#endif /* DEBUG_H */

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//----------------------------------------------------------------------
// This software is part of the OpenBeOS distribution and is covered
// by the OpenBeOS license.
//
// UDF version copyright (c) 2003 Tyler Dauwalder, tyler@dauwalder.net
// Initial version copyright (c) 2002 Axel Dörfler, axeld@pinc-software.de
//----------------------------------------------------------------------
/*! \file UdfDebug.cpp
Support code for handy debugging macros.
*/
#include "UdfDebug.h"
#include <KernelExport.h>
#include <TLS.h>
//----------------------------------------------------------------------
// declarations
//----------------------------------------------------------------------
static void indent();
static void unindent();
static int32 get_tls_handle();
//! Used to keep the tls handle from being allocated more than once.
vint32 tls_spinlock = 0;
/*! \brief Used to flag whether the tls handle has been allocated yet.
Not sure if this really needs to be \c volatile or not...
*/
volatile bool tls_handle_initialized = false;
//! The tls handle of the tls var used to store indentation info.
int32 tls_handle = 0;
//----------------------------------------------------------------------
// public functions
//----------------------------------------------------------------------
/*! \brief Returns the current debug indentation level for the
current thread.
*/
int32
_get_debug_indent_level()
{
return (int32)tls_get(get_tls_handle());
}
//----------------------------------------------------------------------
// static functions
//----------------------------------------------------------------------
/*! \brief Increases the current debug indentation level for
the current thread by 1.
*/
void
indent()
{
tls_set(get_tls_handle(), (void*)(_get_debug_indent_level()+1));
}
/*! \brief Decreases the current debug indentation level for
the current thread by 1.
*/
void
unindent()
{
tls_set(get_tls_handle(), (void*)(_get_debug_indent_level()-1));
}
/*! \brief Returns the thread local storage handle used to store
indentation information, allocating the handle first if
necessary.
*/
int32
get_tls_handle()
{
// Init the tls handle if this is the first call.
if (!tls_handle_initialized) {
if (atomic_or(&tls_spinlock, 1) == 0) {
// First one in gets to init
tls_handle = tls_allocate();
tls_handle_initialized = true;
atomic_and(&tls_spinlock, 0);
} else {
// All others must wait patiently
while (!tls_handle_initialized) {
snooze(1);
}
}
}
return tls_handle;
}
//----------------------------------------------------------------------
// _DebugHelper
//----------------------------------------------------------------------
/*! \brief Increases the current indentation level.
*/
_DebugHelper::_DebugHelper()
{
indent();
}
/*! \brief Decreases the current indentation level.
*/
_DebugHelper::~_DebugHelper()
{
unindent();
}

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//----------------------------------------------------------------------
// This software is part of the OpenBeOS distribution and is covered
// by the OpenBeOS license.
//
// UDF version copyright (c) 2003 Tyler Dauwalder, tyler@dauwalder.net
// Initial version copyright (c) 2002 Axel Dörfler, axeld@pinc-software.de
//----------------------------------------------------------------------
#ifndef UDF_DEBUG_H
#define UDF_DEBUG_H
/*! \file UdfDebug.h
Handy debugging macros.
*/
#include <KernelExport.h>
#include <OS.h>
#ifdef DEBUG
# include <string.h>
#endif
#ifdef USER
# include <stdio.h>
# define __out printf
#else
# include <null.h>
# define __out dprintf
#endif
/*! \def DIE(x)
\brief Drops the user into the appropriate debugger (user or kernel)
after printing out the handy message bundled in the parenthesee
enclosed printf-style format string found in \a x.
\param x A printf-style format string enclosed in an extra set of parenteses,
e.g. PRINT(("%d\n", 0));
*/
#ifdef USER
# define DIE(x) debugger x
#else
# define DIE(x) kernel_debugger x
#endif
int32 _get_debug_indent_level();
/*! \brief Helper class that is allocated on the stack by
the \c DEBUG_INIT() macro. On creation, it increases the
current indentation level by 1; on destruction, it decreases
it by 1.
*/
class _DebugHelper
{
public:
_DebugHelper();
~_DebugHelper();
};
//----------------------------------------------------------------------
// Long-winded overview of the debug output macros:
//----------------------------------------------------------------------
/*! \def DEBUG_INIT()
\brief Increases the indentation level, prints out the enclosing function's
name, and creates a \c _DebugHelper object on the stack to automatically
decrease the indentation level upon function exit.
This macro should be called at the very beginning of any function in
which you wish to use any of the other debugging macros.
If DEBUG is undefined, does nothing.
*/
//----------------------------------------------------------------------
/*! \def PRINT(x)
\brief Prints out the enclosing function's name followed by the contents
of \a x at the current indentation level.
\param x A printf-style format string enclosed in an extra set of parenteses,
e.g. PRINT(("%d\n", 0));
If DEBUG is undefined, does nothing.
*/
//----------------------------------------------------------------------
/*! \def LPRINT(x)
\brief Identical to \c PRINT(x), except that the line number in the source
file at which the macro is invoked is also printed.
\param x A printf-style format string enclosed in an extra set of parenteses,
e.g. PRINT(("%d\n", 0));
If DEBUG is undefined, does nothing.
*/
//----------------------------------------------------------------------
/*! \def SIMPLE_PRINT(x)
\brief Directly prints the contents of \a x with no extra formatting or
information included (just like a straight \c printf() call).
\param x A printf-style format string enclosed in an extra set of parenteses,
e.g. PRINT(("%d\n", 0));
If DEBUG is undefined, does nothing.
*/
//----------------------------------------------------------------------
/*! \def PRINT_INDENT()
\brief Prints out enough indentation characters to indent the current line
to the current indentation level (assuming the cursor was flush left to
begin with...).
This function is called by the other \c *PRINT* macros, and isn't really
intended for general consumption, but you might find it useful.
If DEBUG is undefined, does nothing.
*/
//----------------------------------------------------------------------
/*! \def REPORT_ERROR(err)
\brief Calls \c LPRINT(x) with a format string listing the error
code in \c err (assumed to be a \c status_t value) and the
corresponding text error code returned by a call to \c strerror().
This function is called by the \c RETURN* macros, and isn't really
intended for general consumption, but you might find it useful.
\param err A \c status_t error code to report.
If DEBUG is undefined, does nothing.
*/
//----------------------------------------------------------------------
/*! \def RETURN_ERROR(err)
\brief Calls \c REPORT_ERROR(err) if err is a an error code (i.e.
negative), otherwise remains silent. In either case, the enclosing
function is then exited with a call to \c "return err;".
\param err A \c status_t error code to report (if negative) and return.
If DEBUG is undefined, silently returns the value in \c err.
*/
//----------------------------------------------------------------------
/*! \def RETURN(err)
\brief Prints out a description of the error code being returned
(which, in this case, may be either "erroneous" or "successful")
and then exits the enclosing function with a call to \c "return err;".
\param err A \c status_t error code to report and return.
If DEBUG is undefined, silently returns the value in \c err.
*/
//----------------------------------------------------------------------
/*! \def FATAL(x)
\brief Prints out a fatal error message.
This one's still a work in progress...
\param x A printf-style format string enclosed in an extra set of parenteses,
e.g. PRINT(("%d\n", 0));
If DEBUG is undefined, does nothing.
*/
//----------------------------------------------------------------------
/*! \def INFORM(x)
\brief Directly prints the contents of \a x with no extra formatting or
information included (just like a straight \c printf() call). Does so
whether \c DEBUG is defined or not.
\param x A printf-style format string enclosed in an extra set of parenteses,
e.g. PRINT(("%d\n", 0));
I'll say it again: Prints its output regardless to DEBUG being defined or
undefined.
*/
//----------------------------------------------------------------------
/*! \def DBG(x)
\brief If debug is defined, \a x is passed along to the code and
executed unmodified. If \c DEBUG is undefined, the contents of
\a x disappear into the ether.
\param x Damn near anything resembling valid C\C++.
*/
//----------------------------------------------------------------------
// DEBUG-independent macros
//----------------------------------------------------------------------
#define INFORM(x) { __out("udf: "); __out x; }
//----------------------------------------------------------------------
// DEBUG-dependent macros
//----------------------------------------------------------------------
#ifdef DEBUG
#define DEBUG_INIT() \
_DebugHelper _debug_helper_object; \
PRINT(("\n"));
#define PRINT(x) { \
PRINT_INDENT(); \
__out("udf(%ld): %s(): ", find_thread(NULL), __FUNCTION__); \
__out x; \
}
#define LPRINT(x) { \
PRINT_INDENT(); \
__out("udf(%ld): %s(): line %d: ", find_thread(NULL), __FUNCTION__, __LINE__); \
__out x; \
}
#define SIMPLE_PRINT(x) { __out x; }
#define PRINT_INDENT() { \
int32 _level = _get_debug_indent_level(); \
for (int32 i = 0; i < _level-1; i++) \
__out(" "); \
}
#define REPORT_ERROR(err) { \
LPRINT(("returning error 0x%lx, `%s'\n", err, strerror(err))); \
}
#define RETURN_ERROR(err) { \
status_t _status = err; \
if (_status < (status_t)B_OK) \
REPORT_ERROR(_status); \
return _status; \
}
#define RETURN(err) { \
status_t _status = err; \
if (_status < (status_t)B_OK) { \
REPORT_ERROR(_status); \
} else if (_status == (status_t)B_OK) { \
LPRINT(("returning B_OK\n")); \
} else { \
LPRINT(("returning 0x%lx = %ld\n", _status, _status)); \
} \
return _status; \
}
#define FATAL(x) { \
PRINT(("fatal error: ")); SIMPLE_PRINT(x); \
}
#define DBG(x) x ;
#else // ifdef DEBUG
#define DEBUG_INIT() ;
#define PRINT(x) ;
#define LPRINT(x) ;
#define SIMPLE_PRINT(x) ;
#define PRINT_INDENT(x) ;
#define REPORT_ERROR(status) ;
#define RETURN_ERROR(status) return status;
#define RETURN(status) return status;
#define FATAL(x) { __out("udf: fatal error: "); __out x; }
#define DBG(x) ;
#endif // ifdef DEBUG else
#endif // DEBUG_H