#include "my_config.h"
#include <assert.h>
#include <ctype.h>
#include <errno.h>
#include <stdarg.h>
#include <stdio.h>
#include <stdlib.h>
#include <sys/types.h>
#include <time.h>
#include <algorithm>
#include "dig_vec.h"
#include "m_string.h"
#include "my_compiler.h"
#include "my_dbug.h"
#include "my_inttypes.h"
#include "my_io.h"
#include "my_macros.h"
#include "my_sys.h"
#include "my_thread_local.h"
#include "mysql/strings/int2str.h"
#include "nulls.h"
#include "thr_mutex.h"
#include "thr_rwlock.h"
#include <fnmatch.h>
#include <signal.h>

Classes
struct	link

struct	settings

struct	CODE_STATE

Macros
#define	INDENT 2 /* Indentation per trace level */

#define	MAXDEPTH 200 /* Maximum trace depth default */

#define	DEBUG_ON (1 << 1) /* Debug enabled */

#define	FILE_ON (1 << 2) /* File name print enabled */

#define	LINE_ON (1 << 3) /* Line number print enabled */

#define	DEPTH_ON (1 << 4) /* Function nest level print enabled */

#define	PROCESS_ON (1 << 5) /* Process name print enabled */

#define	NUMBER_ON (1 << 6) /* Number each line of output */

#define	PROFILE_ON (1 << 7) /* Print out profiling code */

#define	PID_ON (1 << 8) /* Identify each line with process id */

#define	TIMESTAMP_ON (1 << 9) /* timestamp every line of output */

#define	FLUSH_ON_WRITE (1 << 10) /* Flush on every write */

#define	OPEN_APPEND (1 << 11) /* Open for append */

#define	TRACE_ON ((uint)1 << 31) /* Trace enabled. MUST be the highest bit!*/

#define	TRACING (cs->stack->flags & TRACE_ON)

#define	DEBUGGING (cs->stack->flags & DEBUG_ON)

#define	PROFILING (cs->stack->flags & PROFILE_ON)

#define	SUBDIR 1 /* this MUST be 1 */

#define	INCLUDE 2

#define	EXCLUDE 4

#define	MATCHED 65536

#define	NOT_MATCHED 0

#define	is_shared(S, V) ((S)->next && (S)->next->V == (S)->V)

#define	get_code_state_if_not_set_or_return if (!cs && !((cs = code_state()))) return

#define	get_code_state_or_return if (!((cs = code_state()))) return

#define	ListAdd(A, B, C) ListAddDel(A, B, C, INCLUDE)

#define	ListDel(A, B, C) ListAddDel(A, B, C, EXCLUDE)

#define	DO_TRACE 1

#define	DONT_TRACE 2

#define	ENABLE_TRACE 3

#define	DISABLE_TRACE 4

#define	ERR_MISSING_RETURN "missing DBUG_RETURN or DBUG_VOID_RETURN macro in function \"%s\"\n"

#define	ERR_MISSING_UNLOCK "missing DBUG_UNLOCK_FILE macro in function \"%s\"\n"

#define	ERR_OPEN "%s: can't open debug output stream \"%s\": "

#define	ERR_CLOSE "%s: can't close debug file: "

#define	ERR_ABORT "%s: debugger aborting because %s\n"

#define	Delay(A) sleep(((uint)A) / 10)

#define	framep_trace_flag(cs, frp)

#define	fflags(cs) cs->stack->out_file ? ListFlags(cs->stack->functions) : TRACE_ON;

#define	char_to_buf(C)

#define	str_to_buf(S)

#define	list_to_buf(l, f)

#define	int_to_buf(i)

#define	colon_to_buf

#define	op_int_to_buf(C, val, def)

#define	op_intf_to_buf(C, val, def, cond)

#define	op_str_to_buf(C, val, cond)

#define	op_list_to_buf(C, val, cond)

#define	op_bool_to_buf(C, cond)

Functions
static struct link *	ListAddDel (struct link , const char , const char *, int)

static struct link *	ListCopy (struct link *)

static int	InList (struct link linkp, const char cp)

static uint	ListFlags (struct link *linkp)

static void	FreeList (struct link *linkp)

static int	isseparator (const char *ptr)

static void	DBUGOpenFile (CODE_STATE , const char , const char *, int)

static void	DBUGCloseFile (CODE_STATE cs, FILE fp)

static void	PushState (CODE_STATE *cs)

static void	FreeState (CODE_STATE cs, struct settings state, int free_state)

static int	DoTrace (CODE_STATE *cs)

static void	DoPrefix (CODE_STATE *cs, uint line)

static bool	Writable (const char *pathname)

static char *	DbugMalloc (size_t size)

static const char *	BaseName (const char *pathname)

static void	Indent (CODE_STATE *cs, int indent)

static void	DbugFlush (CODE_STATE *)

static void	DbugExit (const char *why)

static const char *	DbugStrTok (const char *s)

static void	DbugVfprintf (FILE stream, const char format, va_list args)

static CODE_STATE *	code_state (void)

static void	read_lock_stack (CODE_STATE *cs)
	Lock the stack debugging settings. More...

static void	unlock_stack (CODE_STATE *cs)
	Unlock the stack debugging settings. More...

void	_db_process_ (const char *name)

static int	DbugParse (CODE_STATE cs, const char control)

static void	FixTraceFlags_helper (CODE_STATE cs, const char func, struct _db_stack_frame_ *framep)

static void	FixTraceFlags (uint old_fflags, CODE_STATE *cs)

void	_db_set_ (const char *control)

void	_db_push_ (const char *control)

int	_db_is_pushed_ ()
	Returns true if session-local settings have been set. More...

void	_db_set_init_ (const char *control)

void	_db_pop_ ()

int	_db_explain_ (CODE_STATE cs, char buf, size_t len)

int	_db_explain_init_ (char *buf, size_t len)

void	_db_enter_ (const char _func_, int func_len, const char _file_, uint _line_, struct _db_stack_frame_ *_stack_frame_)

void	_db_return_ (uint _line_, struct _db_stack_frame_ *_stack_frame_)

void	_db_pargs_ (uint _line_, const char *keyword)

int	_db_enabled_ ()

void	_db_doprnt_ (const char *format,...)

void	_db_dump_ (uint _line_, const char keyword, const unsigned char memory, size_t length)

void	_db_end_ ()

FILE *	_db_fp_ (void)

int	_db_keyword_ (CODE_STATE cs, const char keyword, int strict)

void	_db_flush_ ()

void	_db_flush_gcov_ ()

void	_db_suicide_ ()

void	_db_lock_file_ ()

void	_db_unlock_file_ ()

Variables
static bool	init_done = false

static struct settings	init_settings
	Global debugging settings. More...

static const char *	db_process = nullptr

static native_mutex_t	THR_LOCK_dbug

static native_mutex_t	THR_LOCK_gcov
	A mutex protecting flushing of gcov data, see db_flush_gcov(). More...

static native_rw_lock_t	THR_LOCK_init_settings
	Lock, to protect `init_settings`. More...

Macro Definition Documentation

◆ char_to_buf

#define char_to_buf ( C )

Value:

  do {                             \
    *buf++ = (C);                  \
    if (buf >= end) goto overflow; \
  } while (0)

◆ colon_to_buf

#define colon_to_buf

Value:

  do {                                  \
    if (buf != start) char_to_buf(':'); \
  } while (0)

◆ DEBUG_ON

#define DEBUG_ON (1 << 1) /* Debug enabled */

◆ DEBUGGING

#define DEBUGGING (cs->stack->flags & DEBUG_ON)

◆ Delay

#define Delay ( A ) sleep(((uint)A) / 10)

◆ DEPTH_ON

#define DEPTH_ON (1 << 4) /* Function nest level print enabled */

◆ DISABLE_TRACE

#define DISABLE_TRACE 4

◆ DO_TRACE

#define DO_TRACE 1

◆ DONT_TRACE

#define DONT_TRACE 2

◆ ENABLE_TRACE

#define ENABLE_TRACE 3

◆ ERR_ABORT

#define ERR_ABORT "%s: debugger aborting because %s\n"

◆ ERR_CLOSE

#define ERR_CLOSE "%s: can't close debug file: "

◆ ERR_MISSING_RETURN

#define ERR_MISSING_RETURN "missing DBUG_RETURN or DBUG_VOID_RETURN macro in function \"%s\"\n"

◆ ERR_MISSING_UNLOCK

#define ERR_MISSING_UNLOCK "missing DBUG_UNLOCK_FILE macro in function \"%s\"\n"

◆ ERR_OPEN

#define ERR_OPEN "%s: can't open debug output stream \"%s\": "

◆ EXCLUDE

#define EXCLUDE 4

◆ fflags

#define fflags ( cs ) cs->stack->out_file ? ListFlags(cs->stack->functions) : TRACE_ON;

◆ FILE_ON

#define FILE_ON (1 << 2) /* File name print enabled */

◆ FLUSH_ON_WRITE

#define FLUSH_ON_WRITE (1 << 10) /* Flush on every write */

◆ framep_trace_flag

#define framep_trace_flag	(	cs,
		frp
	)

Value:

  (frp                                           ? frp->level & TRACE_ON \
   : (ListFlags(cs->stack->functions) & INCLUDE) ? 0                     \
                                                 : (uint)TRACE_ON)

◆ get_code_state_if_not_set_or_return

#define get_code_state_if_not_set_or_return if (!cs && !((cs = code_state()))) return

◆ get_code_state_or_return

#define get_code_state_or_return if (!((cs = code_state()))) return

◆ INCLUDE

#define INCLUDE 2

◆ INDENT

#define INDENT 2 /* Indentation per trace level */

◆ int_to_buf

#define int_to_buf ( i )

Value:

  do {                             \
    char b[50];                    \
    longlong10_to_str((i), b, 10); \
    str_to_buf(b);                 \
  } while (0)

◆ is_shared

#define is_shared	(	S,
		V
	)	((S)->next && (S)->next->V == (S)->V)

◆ LINE_ON

#define LINE_ON (1 << 3) /* Line number print enabled */

◆ list_to_buf

#define list_to_buf	(	l,
		f
	)

Value:

  do {                                               \
    struct link *listp = (l);                        \
    while (listp) {                                  \
      if (listp->flags & (f)) {                      \
        str_to_buf(listp->str);                      \
        if (listp->flags & SUBDIR) char_to_buf('/'); \
      }                                              \
      listp = listp->next_link;                      \
    }                                                \
  } while (0)

◆ ListAdd

#define ListAdd	(	A,
		B,
		C
	)	ListAddDel(A, B, C, INCLUDE)

◆ ListDel

#define ListDel	(	A,
		B,
		C
	)	ListAddDel(A, B, C, EXCLUDE)

◆ MATCHED

#define MATCHED 65536

◆ MAXDEPTH

#define MAXDEPTH 200 /* Maximum trace depth default */

◆ NOT_MATCHED

#define NOT_MATCHED 0

◆ NUMBER_ON

#define NUMBER_ON (1 << 6) /* Number each line of output */

◆ op_bool_to_buf

#define op_bool_to_buf	(	C,
		cond
	)

Value:

  do {                          \
    if ((cond)) {               \
      colon_to_buf;             \
      char_to_buf((C));         \
    }                           \
  } while (0)

◆ op_int_to_buf

#define op_int_to_buf	(	C,
		val,
		def
	)

Value:

  do {                             \
    if ((val) != (def)) {          \
      colon_to_buf;                \
      char_to_buf((C));            \
      int_to_buf(val);             \
    }                              \
  } while (0)

◆ op_intf_to_buf

#define op_intf_to_buf	(	C,
		val,
		def,
		cond
	)

Value:

  do {                                     \
    if ((cond)) {                          \
      colon_to_buf;                        \
      char_to_buf((C));                    \
      if ((val) != (def)) int_to_buf(val); \
    }                                      \
  } while (0)

◆ op_list_to_buf

#define op_list_to_buf	(	C,
		val,
		cond
	)

Value:

  do {                                            \
    if ((cond)) {                                 \
      int f = ListFlags(val);                     \
      colon_to_buf;                               \
      char_to_buf((C));                           \
      if (f & INCLUDE) list_to_buf(val, INCLUDE); \
      if (f & EXCLUDE) {                          \
        colon_to_buf;                             \
        char_to_buf('-');                         \
        char_to_buf((C));                         \
        list_to_buf(val, EXCLUDE);                \
      }                                           \
    }                                             \
  } while (0)

◆ op_str_to_buf

#define op_str_to_buf	(	C,
		val,
		cond
	)

Value:

  do {                              \
    if ((cond)) {                   \
      char *s = (val);              \
      colon_to_buf;                 \
      char_to_buf((C));             \
      if (*s) str_to_buf(s);        \
    }                               \
  } while (0)

◆ OPEN_APPEND

#define OPEN_APPEND (1 << 11) /* Open for append */

◆ PID_ON

#define PID_ON (1 << 8) /* Identify each line with process id */

◆ PROCESS_ON

#define PROCESS_ON (1 << 5) /* Process name print enabled */

◆ PROFILE_ON

#define PROFILE_ON (1 << 7) /* Print out profiling code */

◆ PROFILING

#define PROFILING (cs->stack->flags & PROFILE_ON)

◆ str_to_buf

#define str_to_buf ( S )

Value:

  do {                                     \
    char_to_buf(',');                      \
    buf = my_stpnmov(buf, (S), end - buf); \
    if (buf >= end) goto overflow;         \
  } while (0)

◆ SUBDIR

#define SUBDIR 1 /* this MUST be 1 */

◆ TIMESTAMP_ON

#define TIMESTAMP_ON (1 << 9) /* timestamp every line of output */

◆ TRACE_ON

#define TRACE_ON ((uint)1 << 31) /* Trace enabled. MUST be the highest bit!*/

◆ TRACING

#define TRACING (cs->stack->flags & TRACE_ON)

Function Documentation

◆ _db_doprnt_()

void _db_doprnt_	(	const char *	format,
			...
	)

◆ _db_dump_()

void _db_dump_	(	uint	_line_,
		const char *	keyword,
		const unsigned char *	memory,
		size_t	length
	)

◆ _db_enabled_()

int _db_enabled_ ( )

◆ _db_end_()

void _db_end_ ( void )

◆ _db_enter_()

void _db_enter_	(	const char *	_func_,
		int	func_len,
		const char *	_file_,
		uint	_line_,
		struct _db_stack_frame_ *	_stack_frame_
	)

◆ _db_explain_()

int _db_explain_	(	CODE_STATE *	cs,
		char *	buf,
		size_t	len
	)

◆ _db_explain_init_()

int _db_explain_init_	(	char *	buf,
		size_t	len
	)

◆ _db_flush_()

void _db_flush_ ( )

◆ _db_flush_gcov_()

void _db_flush_gcov_ ( )

◆ _db_fp_()

FILE * _db_fp_ ( void )

◆ _db_is_pushed_()

int _db_is_pushed_ ( void )

Returns true if session-local settings have been set.

◆ _db_keyword_()

int _db_keyword_	(	CODE_STATE *	cs,
		const char *	keyword,
		int	strict
	)

◆ _db_lock_file_()

void _db_lock_file_ ( void )

◆ _db_pargs_()

void _db_pargs_	(	uint	_line_,
		const char *	keyword
	)

◆ _db_pop_()

void _db_pop_ ( void )

◆ _db_process_()

void _db_process_ ( const char * name )

◆ _db_push_()

void _db_push_ ( const char * control )

◆ _db_return_()

void _db_return_	(	uint	_line_,
		struct _db_stack_frame_ *	_stack_frame_
	)

◆ _db_set_()

void _db_set_ ( const char * control )

◆ _db_set_init_()

void _db_set_init_ ( const char * control )

◆ _db_suicide_()

void _db_suicide_ ( )

◆ _db_unlock_file_()

void _db_unlock_file_ ( void )

◆ BaseName()

static const char * BaseName ( const char * pathname )

static

◆ code_state()

static CODE_STATE * code_state ( void )

static

◆ DBUGCloseFile()

static void DBUGCloseFile	(	CODE_STATE *	cs,
		FILE *	fp
	)

static

◆ DbugExit()

static void DbugExit ( const char * why )

static

◆ DbugFlush()

static void DbugFlush ( CODE_STATE * cs )

static

◆ DbugMalloc()

static char * DbugMalloc ( size_t size )

static

◆ DBUGOpenFile()

static void DBUGOpenFile	(	CODE_STATE *	cs,
		const char *	name,
		const char *	end,
		int	append
	)

static

◆ DbugParse()

static int DbugParse	(	CODE_STATE *	cs,
		const char *	control
	)

static

◆ DbugStrTok()

static const char * DbugStrTok ( const char * s )

static

◆ DbugVfprintf()

static void DbugVfprintf	(	FILE *	stream,
		const char *	format,
		va_list	args
	)

static

◆ DoPrefix()

static void DoPrefix	(	CODE_STATE *	cs,
		uint	line
	)

static

◆ DoTrace()

static int DoTrace ( CODE_STATE * cs )

static

◆ FixTraceFlags()

static void FixTraceFlags	(	uint	old_fflags,
		CODE_STATE *	cs
	)

static

◆ FixTraceFlags_helper()

static void FixTraceFlags_helper	(	CODE_STATE *	cs,
		const char *	func,
		struct _db_stack_frame_ *	framep
	)

static

◆ FreeList()

static void FreeList ( struct link * linkp )

static

◆ FreeState()

static void FreeState	(	CODE_STATE *	cs,
		struct settings *	state,
		int	free_state
	)

static

◆ Indent()

static void Indent	(	CODE_STATE *	cs,
		int	indent
	)

static

◆ InList()

static int InList	(	struct link *	linkp,
		const char *	cp
	)

static

◆ isseparator()

static int isseparator ( const char * ptr )

inlinestatic

◆ ListAddDel()

static struct link * ListAddDel	(	struct link *	head,
		const char *	ctlp,
		const char *	end,
		int	todo
	)

static

◆ ListCopy()

static struct link * ListCopy ( struct link * orig )

static

◆ ListFlags()

static uint ListFlags ( struct link * linkp )

static

◆ PushState()

static void PushState ( CODE_STATE * cs )

static

◆ read_lock_stack()

static void read_lock_stack ( CODE_STATE * cs )

static

Lock the stack debugging settings.

Only the shared (global) settings are locked if necessary, per thread settings are local and safe to use. This lock is re entrant.

See also: unlock_stack

◆ unlock_stack()

static void unlock_stack ( CODE_STATE * cs )

static

Unlock the stack debugging settings.

See also: read_lock_stack

◆ Writable()

static bool Writable ( const char * pathname )

static

Variable Documentation

◆ db_process

const char* db_process = nullptr

static

◆ init_done

bool init_done = false

static

◆ init_settings

struct settings init_settings

static

Global debugging settings.

This structure shared between all threads, and is the last element in each thread CODE_STATE::stack chain. Protected by THR_LOCK_init_settings.

◆ THR_LOCK_dbug

native_mutex_t THR_LOCK_dbug

static

◆ THR_LOCK_gcov

native_mutex_t THR_LOCK_gcov

static

A mutex protecting flushing of gcov data, see db_flush_gcov().

We don't re-use THR_LOCK_dbug, because that would disallow: DBUG_LOCK_FILE; ..... DBUG_SUICIDE(); .... DBUG_UNLOCK_FILE;

◆ THR_LOCK_init_settings

native_rw_lock_t THR_LOCK_init_settings

static

Lock, to protect init_settings.

For performance reasons, the member init_settings.flags is not protected.

Classes

Macros

Functions

Variables

Macro Definition Documentation

◆ char_to_buf

◆ colon_to_buf

◆ DEBUG_ON

◆ DEBUGGING

◆ Delay

◆ DEPTH_ON

◆ DISABLE_TRACE

◆ DO_TRACE

◆ DONT_TRACE

◆ ENABLE_TRACE

◆ ERR_ABORT

◆ ERR_CLOSE

◆ ERR_MISSING_RETURN

◆ ERR_MISSING_UNLOCK

◆ ERR_OPEN

◆ EXCLUDE

◆ fflags

◆ FILE_ON

◆ FLUSH_ON_WRITE

◆ framep_trace_flag

◆ get_code_state_if_not_set_or_return

◆ get_code_state_or_return

◆ INCLUDE

◆ INDENT

◆ int_to_buf

◆ is_shared

◆ LINE_ON

◆ list_to_buf

◆ ListAdd

◆ ListDel

◆ MATCHED

◆ MAXDEPTH

◆ NOT_MATCHED

◆ NUMBER_ON

◆ op_bool_to_buf

◆ op_int_to_buf

◆ op_intf_to_buf

◆ op_list_to_buf

◆ op_str_to_buf

◆ OPEN_APPEND

◆ PID_ON

◆ PROCESS_ON

◆ PROFILE_ON

◆ PROFILING

◆ str_to_buf

◆ SUBDIR

◆ TIMESTAMP_ON

◆ TRACE_ON

◆ TRACING

Function Documentation

◆ _db_doprnt_()

◆ _db_dump_()

◆ _db_enabled_()

◆ _db_end_()

◆ _db_enter_()

◆ _db_explain_()

◆ _db_explain_init_()

◆ _db_flush_()

◆ _db_flush_gcov_()

◆ _db_fp_()

◆ _db_is_pushed_()

◆ _db_keyword_()

◆ _db_lock_file_()

◆ _db_pargs_()

◆ _db_pop_()

◆ _db_process_()

◆ _db_push_()

◆ _db_return_()

◆ _db_set_()

◆ _db_set_init_()

◆ _db_suicide_()

◆ _db_unlock_file_()

◆ BaseName()

◆ code_state()

◆ DBUGCloseFile()