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Diffstat (limited to 'deps/mysqllite/dbug/dbug.c')
| -rw-r--r-- | deps/mysqllite/dbug/dbug.c | 2284 |
1 files changed, 0 insertions, 2284 deletions
diff --git a/deps/mysqllite/dbug/dbug.c b/deps/mysqllite/dbug/dbug.c deleted file mode 100644 index 2c06eeff95..0000000000 --- a/deps/mysqllite/dbug/dbug.c +++ /dev/null @@ -1,2284 +0,0 @@ -/****************************************************************************** - * * - * N O T I C E * - * * - * Copyright Abandoned, 1987, Fred Fish * - * * - * * - * This previously copyrighted work has been placed into the public * - * domain by the author and may be freely used for any purpose, * - * private or commercial. * - * * - * Because of the number of inquiries I was receiving about the use * - * of this product in commercially developed works I have decided to * - * simply make it public domain to further its unrestricted use. I * - * specifically would be most happy to see this material become a * - * part of the standard Unix distributions by AT&T and the Berkeley * - * Computer Science Research Group, and a standard part of the GNU * - * system from the Free Software Foundation. * - * * - * I would appreciate it, as a courtesy, if this notice is left in * - * all copies and derivative works. Thank you. * - * * - * The author makes no warranty of any kind with respect to this * - * product and explicitly disclaims any implied warranties of mer- * - * chantability or fitness for any particular purpose. * - * * - ****************************************************************************** - */ - -/* - * FILE - * - * dbug.c runtime support routines for dbug package - * - * SCCS - * - * @(#)dbug.c 1.25 7/25/89 - * - * DESCRIPTION - * - * These are the runtime support routines for the dbug package. - * The dbug package has two main components; the user include - * file containing various macro definitions, and the runtime - * support routines which are called from the macro expansions. - * - * Externally visible functions in the runtime support module - * use the naming convention pattern "_db_xx...xx_", thus - * they are unlikely to collide with user defined function names. - * - * AUTHOR(S) - * - * Fred Fish (base code) - * Enhanced Software Technologies, Tempe, AZ - * asuvax!mcdphx!estinc!fnf - * - * Binayak Banerjee (profiling enhancements) - * seismo!bpa!sjuvax!bbanerje - * - * Michael Widenius: - * DBUG_DUMP - To dump a block of memory. - * PUSH_FLAG "O" - To be used insted of "o" if we - * want flushing after each write - * PUSH_FLAG "A" - as 'O', but we will append to the out file instead - * of creating a new one. - * Check of malloc on entry/exit (option "S") - * - * Sergei Golubchik: - * DBUG_EXECUTE_IF - * incremental mode (-#+t:-d,info ...) - * DBUG_SET, _db_explain_ - * thread-local settings - * negative lists (-#-d,info => everything but "info") - * - * function/ syntax - * (the logic is - think of a call stack as of a path. - * "function" means only this function, "function/" means the hierarchy. - * in the future, filters like function1/function2 could be supported. - * following this logic glob(7) wildcards are supported.) - * - */ - -/* - We can't have SAFE_MUTEX defined here as this will cause recursion - in pthread_mutex_lock -*/ - -#undef SAFE_MUTEX -#include <my_global.h> -#include <m_string.h> -#include <errno.h> - -#ifdef HAVE_FNMATCH_H -#include <fnmatch.h> -#else -#define fnmatch(A,B,C) strcmp(A,B) -#endif - -#if defined(__WIN__) -#include <process.h> -#endif - -#ifndef DBUG_OFF - - -/* - * Manifest constants which may be "tuned" if desired. - */ - -#define PRINTBUF 1024 /* Print buffer size */ -#define INDENT 2 /* Indentation per trace level */ -#define MAXDEPTH 200 /* Maximum trace depth default */ - -/* - * The following flags are used to determine which - * capabilities the user has enabled with the settings - * push macro. - * - * TRACE_ON is also used in _db_stack_frame_->level - * (until we add flags to _db_stack_frame_, increasing it by 4 bytes) - */ - -#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) - -/* - * Typedefs to make things more obvious. - */ - -#define BOOLEAN my_bool - -/* - * Make it easy to change storage classes if necessary. - */ - -#define IMPORT extern /* Names defined externally */ -#define EXPORT /* Allocated here, available globally */ -#define AUTO auto /* Names to be allocated on stack */ -#define REGISTER register /* Names to be placed in registers */ - -/* - * The default file for profiling. Could also add another flag - * (G?) which allowed the user to specify this. - * - * If the automatic variables get allocated on the stack in - * reverse order from their declarations, then define AUTOS_REVERSE to 1. - * This is used by the code that keeps track of stack usage. For - * forward allocation, the difference in the dbug frame pointers - * represents stack used by the callee function. For reverse allocation, - * the difference represents stack used by the caller function. - * - */ - -#define PROF_FILE "dbugmon.out" -#define PROF_EFMT "E\t%ld\t%s\n" -#define PROF_SFMT "S\t%lx\t%lx\t%s\n" -#define PROF_XFMT "X\t%ld\t%s\n" - -#ifdef M_I386 /* predefined by xenix 386 compiler */ -#define AUTOS_REVERSE 1 -#else -#define AUTOS_REVERSE 0 -#endif - -/* - * Externally supplied functions. - */ - -#ifndef HAVE_PERROR -static void perror(); /* Fake system/library error print routine */ -#endif - -/* - * The user may specify a list of functions to trace or - * debug. These lists are kept in a linear linked list, - * a very simple implementation. - */ - -struct link { - struct link *next_link; /* Pointer to the next link */ - char flags; - char str[1]; /* Pointer to link's contents */ -}; - -/* flags for struct link and return flags of InList */ -#define SUBDIR 1 /* this MUST be 1 */ -#define INCLUDE 2 -#define EXCLUDE 4 -/* this is not a struct link flag, but only a return flags of InList */ -#define MATCHED 65536 -#define NOT_MATCHED 0 - -/* - * Debugging settings can be pushed or popped off of a - * stack which is implemented as a linked list. Note - * that the head of the list is the current settings and the - * stack is pushed by adding a new settings to the head of the - * list or popped by removing the first link. - * - * Note: if out_file is NULL, the other fields are not initialized at all! - */ - -struct settings { - uint flags; /* Current settings flags */ - uint maxdepth; /* Current maximum trace depth */ - uint delay; /* Delay after each output line */ - uint sub_level; /* Sub this from code_state->level */ - FILE *out_file; /* Current output stream */ - FILE *prof_file; /* Current profiling stream */ - char name[FN_REFLEN]; /* Name of output file */ - struct link *functions; /* List of functions */ - struct link *p_functions; /* List of profiled functions */ - struct link *keywords; /* List of debug keywords */ - struct link *processes; /* List of process names */ - struct settings *next; /* Next settings in the list */ -}; - -#define is_shared(S, V) ((S)->next && (S)->next->V == (S)->V) - -/* - * Local variables not seen by user. - */ - - -static BOOLEAN init_done= FALSE; /* Set to TRUE when initialization done */ -static struct settings init_settings; -static const char *db_process= 0;/* Pointer to process name; argv[0] */ -my_bool _dbug_on_= TRUE; /* FALSE if no debugging at all */ - -typedef struct _db_code_state_ { - const char *process; /* Pointer to process name; usually argv[0] */ - const char *func; /* Name of current user function */ - const char *file; /* Name of current user file */ - struct _db_stack_frame_ *framep; /* Pointer to current frame */ - struct settings *stack; /* debugging settings */ - const char *jmpfunc; /* Remember current function for setjmp */ - const char *jmpfile; /* Remember current file for setjmp */ - int lineno; /* Current debugger output line number */ - uint level; /* Current function nesting level */ - int jmplevel; /* Remember nesting level at setjmp() */ - -/* - * The following variables are used to hold the state information - * between the call to _db_pargs_() and _db_doprnt_(), during - * expansion of the DBUG_PRINT macro. This is the only macro - * that currently uses these variables. - * - * These variables are currently used only by _db_pargs_() and - * _db_doprnt_(). - */ - - uint u_line; /* User source code line number */ - int locked; /* If locked with _db_lock_file_ */ - const char *u_keyword; /* Keyword for current macro */ -} CODE_STATE; - -/* - The test below is so we could call functions with DBUG_ENTER before - my_thread_init(). -*/ -#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 - - /* Handling lists */ -#define ListAdd(A,B,C) ListAddDel(A,B,C,INCLUDE) -#define ListDel(A,B,C) ListAddDel(A,B,C,EXCLUDE) -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); - - /* OpenClose debug output stream */ -static void DBUGOpenFile(CODE_STATE *,const char *, const char *, int); -static void DBUGCloseFile(CODE_STATE *cs, FILE *fp); - /* Push current debug settings */ -static void PushState(CODE_STATE *cs); - /* Free memory associated with debug state. */ -static void FreeState (CODE_STATE *cs, struct settings *state, int free_state); - /* Test for tracing enabled */ -static int DoTrace(CODE_STATE *cs); -/* - return values of DoTrace. - Can also be used as bitmask: ret & DO_TRACE -*/ -#define DO_TRACE 1 -#define DONT_TRACE 2 -#define ENABLE_TRACE 3 -#define DISABLE_TRACE 4 - - /* Test to see if file is writable */ -#if defined(HAVE_ACCESS) -static BOOLEAN Writable(const char *pathname); - /* Change file owner and group */ -static void ChangeOwner(CODE_STATE *cs, char *pathname); - /* Allocate memory for runtime support */ -#endif - -static void DoPrefix(CODE_STATE *cs, uint line); - -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); - -/* - * Miscellaneous printf format strings. - */ - -#define ERR_MISSING_RETURN "missing DBUG_RETURN or DBUG_VOID_RETURN 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" - -/* - * Macros and defines for testing file accessibility under UNIX and MSDOS. - */ - -#undef EXISTS -#if !defined(HAVE_ACCESS) -#define EXISTS(pathname) (FALSE) /* Assume no existance */ -#define Writable(name) (TRUE) -#else -#define EXISTS(pathname) (access(pathname, F_OK) == 0) -#define WRITABLE(pathname) (access(pathname, W_OK) == 0) -#endif - - -/* -** Macros to allow dbugging with threads -*/ - -#include <my_pthread.h> -static pthread_mutex_t THR_LOCK_dbug; - -static CODE_STATE *code_state(void) -{ - CODE_STATE *cs, **cs_ptr; - - /* - _dbug_on_ is reset if we don't plan to use any debug commands at all and - we want to run on maximum speed - */ - if (!_dbug_on_) - return 0; - - if (!init_done) - { - init_done=TRUE; - pthread_mutex_init(&THR_LOCK_dbug, NULL); - bzero(&init_settings, sizeof(init_settings)); - init_settings.out_file=stderr; - init_settings.flags=OPEN_APPEND; - } - - if (!(cs_ptr= (CODE_STATE**) my_thread_var_dbug())) - return 0; /* Thread not initialised */ - if (!(cs= *cs_ptr)) - { - cs=(CODE_STATE*) DbugMalloc(sizeof(*cs)); - bzero((uchar*) cs,sizeof(*cs)); - cs->process= db_process ? db_process : "dbug"; - cs->func="?func"; - cs->file="?file"; - cs->stack=&init_settings; - *cs_ptr= cs; - } - return cs; -} - -/* - * Translate some calls among different systems. - */ - -#ifdef HAVE_SLEEP -/* sleep() wants seconds */ -#define Delay(A) sleep(((uint) A)/10) -#else -#define Delay(A) (0) -#endif - -/* - * FUNCTION - * - * _db_process_ give the name to the current process/thread - * - * SYNOPSIS - * - * VOID _process_(name) - * char *name; - * - */ - -void _db_process_(const char *name) -{ - CODE_STATE *cs; - - if (!db_process) - db_process= name; - - get_code_state_or_return; - cs->process= name; -} - -/* - * FUNCTION - * - * DbugParse parse control string and set current debugger settings - * - * DESCRIPTION - * - * Given pointer to a debug control string in "control", - * parses the control string, and sets - * up a current debug settings. - * - * The debug control string is a sequence of colon separated fields - * as follows: - * - * [+]<field_1>:<field_2>:...:<field_N> - * - * Each field consists of a mandatory flag character followed by - * an optional "," and comma separated list of modifiers: - * - * [sign]flag[,modifier,modifier,...,modifier] - * - * See the manual for the list of supported signs, flags, and modifiers - * - * For convenience, any leading "-#" is stripped off. - * - * RETURN - * 1 - a list of functions ("f" flag) was possibly changed - * 0 - a list of functions was not changed - */ - -int DbugParse(CODE_STATE *cs, const char *control) -{ - const char *end; - int rel, f_used=0; - struct settings *stack; - - stack= cs->stack; - - if (control[0] == '-' && control[1] == '#') - control+=2; - - rel= control[0] == '+' || control[0] == '-'; - if ((!rel || (!stack->out_file && !stack->next))) - { - /* Free memory associated with the state before resetting its members */ - FreeState(cs, stack, 0); - stack->flags= 0; - stack->delay= 0; - stack->maxdepth= 0; - stack->sub_level= 0; - stack->out_file= stderr; - stack->prof_file= NULL; - stack->functions= NULL; - stack->p_functions= NULL; - stack->keywords= NULL; - stack->processes= NULL; - } - else if (!stack->out_file) - { - stack->flags= stack->next->flags; - stack->delay= stack->next->delay; - stack->maxdepth= stack->next->maxdepth; - stack->sub_level= stack->next->sub_level; - strcpy(stack->name, stack->next->name); - stack->prof_file= stack->next->prof_file; - if (stack->next == &init_settings) - { - /* - Never share with the global parent - it can change under your feet. - - Reset out_file to stderr to prevent sharing of trace files between - global and session settings. - */ - stack->out_file= stderr; - stack->functions= ListCopy(init_settings.functions); - stack->p_functions= ListCopy(init_settings.p_functions); - stack->keywords= ListCopy(init_settings.keywords); - stack->processes= ListCopy(init_settings.processes); - } - else - { - stack->out_file= stack->next->out_file; - stack->functions= stack->next->functions; - stack->p_functions= stack->next->p_functions; - stack->keywords= stack->next->keywords; - stack->processes= stack->next->processes; - } - } - - end= DbugStrTok(control); - while (control < end) - { - int c, sign= (*control == '+') ? 1 : (*control == '-') ? -1 : 0; - if (sign) control++; - c= *control++; - if (*control == ',') control++; - /* XXX when adding new cases here, don't forget _db_explain_ ! */ - switch (c) { - case 'd': - if (sign < 0 && control == end) - { - if (!is_shared(stack, keywords)) - FreeList(stack->keywords); - stack->keywords=NULL; - stack->flags &= ~DEBUG_ON; - break; - } - if (rel && is_shared(stack, keywords)) - stack->keywords= ListCopy(stack->keywords); - if (sign < 0) - { - if (DEBUGGING) - stack->keywords= ListDel(stack->keywords, control, end); - break; - } - stack->keywords= ListAdd(stack->keywords, control, end); - stack->flags |= DEBUG_ON; - break; - case 'D': - stack->delay= atoi(control); - break; - case 'f': - f_used= 1; - if (sign < 0 && control == end) - { - if (!is_shared(stack,functions)) - FreeList(stack->functions); - stack->functions=NULL; - break; - } - if (rel && is_shared(stack,functions)) - stack->functions= ListCopy(stack->functions); - if (sign < 0) - stack->functions= ListDel(stack->functions, control, end); - else - stack->functions= ListAdd(stack->functions, control, end); - break; - case 'F': - if (sign < 0) - stack->flags &= ~FILE_ON; - else - stack->flags |= FILE_ON; - break; - case 'i': - if (sign < 0) - stack->flags &= ~PID_ON; - else - stack->flags |= PID_ON; - break; - case 'L': - if (sign < 0) - stack->flags &= ~LINE_ON; - else - stack->flags |= LINE_ON; - break; - case 'n': - if (sign < 0) - stack->flags &= ~DEPTH_ON; - else - stack->flags |= DEPTH_ON; - break; - case 'N': - if (sign < 0) - stack->flags &= ~NUMBER_ON; - else - stack->flags |= NUMBER_ON; - break; - case 'A': - case 'O': - stack->flags |= FLUSH_ON_WRITE; - /* fall through */ - case 'a': - case 'o': - if (sign < 0) - { - if (!is_shared(stack, out_file)) - DBUGCloseFile(cs, stack->out_file); - stack->flags &= ~FLUSH_ON_WRITE; - stack->out_file= stderr; - break; - } - if (c == 'a' || c == 'A') - stack->flags |= OPEN_APPEND; - else - stack->flags &= ~OPEN_APPEND; - if (control != end) - DBUGOpenFile(cs, control, end, stack->flags & OPEN_APPEND); - else - DBUGOpenFile(cs, "-",0,0); - break; - case 'p': - if (sign < 0 && control == end) - { - if (!is_shared(stack,processes)) - FreeList(stack->processes); - stack->processes=NULL; - break; - } - if (rel && is_shared(stack, processes)) - stack->processes= ListCopy(stack->processes); - if (sign < 0) - stack->processes= ListDel(stack->processes, control, end); - else - stack->processes= ListAdd(stack->processes, control, end); - break; - case 'P': - if (sign < 0) - stack->flags &= ~PROCESS_ON; - else - stack->flags |= PROCESS_ON; - break; - case 'r': - stack->sub_level= cs->level; - break; - case 't': - if (sign < 0) - { - if (control != end) - stack->maxdepth-= atoi(control); - else - stack->maxdepth= 0; - } - else - { - if (control != end) - stack->maxdepth+= atoi(control); - else - stack->maxdepth= MAXDEPTH; - } - if (stack->maxdepth > 0) - stack->flags |= TRACE_ON; - else - stack->flags &= ~TRACE_ON; - break; - case 'T': - if (sign < 0) - stack->flags &= ~TIMESTAMP_ON; - else - stack->flags |= TIMESTAMP_ON; - break; - } - if (!*end) - break; - control=end+1; - end= DbugStrTok(control); - } - return !rel || f_used; -} - -#define framep_trace_flag(cs, frp) (frp ? \ - frp->level & TRACE_ON : \ - (ListFlags(cs->stack->functions) & INCLUDE) ? \ - 0 : (uint)TRACE_ON) - -void FixTraceFlags_helper(CODE_STATE *cs, const char *func, - struct _db_stack_frame_ *framep) -{ - if (framep->prev) - FixTraceFlags_helper(cs, framep->func, framep->prev); - - cs->func= func; - cs->level= framep->level & ~TRACE_ON; - framep->level= cs->level | framep_trace_flag(cs, framep->prev); - /* - we don't set cs->framep correctly, even though DoTrace uses it. - It's ok, because cs->framep may only affect DO_TRACE/DONT_TRACE return - values, but we ignore them here anyway - */ - switch(DoTrace(cs)) { - case ENABLE_TRACE: - framep->level|= TRACE_ON; - break; - case DISABLE_TRACE: - framep->level&= ~TRACE_ON; - break; - } -} - -#define fflags(cs) cs->stack->out_file ? ListFlags(cs->stack->functions) : TRACE_ON; - -void FixTraceFlags(uint old_fflags, CODE_STATE *cs) -{ - const char *func; - uint new_fflags, traceon, level; - struct _db_stack_frame_ *framep; - - /* - first (a.k.a. safety) check: - if we haven't started tracing yet, no call stack at all - we're safe. - */ - framep=cs->framep; - if (framep == 0) - return; - - /* - Ok, the tracing has started, call stack isn't empty. - - second check: does the new list have a SUBDIR rule ? - */ - new_fflags=fflags(cs); - if (new_fflags & SUBDIR) - goto yuck; - - /* - Ok, new list doesn't use SUBDIR. - - third check: we do NOT need to re-scan if - neither old nor new lists used SUBDIR flag and if a default behavior - (whether an unlisted function is traced) hasn't changed. - Default behavior depends on whether there're INCLUDE elements in the list. - */ - if (!(old_fflags & SUBDIR) && !((new_fflags^old_fflags) & INCLUDE)) - return; - - /* - Ok, old list may've used SUBDIR, or defaults could've changed. - - fourth check: are we inside a currently active SUBDIR rule ? - go up the call stack, if TRACE_ON flag ever changes its value - we are. - */ - for (traceon=framep->level; framep; framep=framep->prev) - if ((traceon ^ framep->level) & TRACE_ON) - goto yuck; - - /* - Ok, TRACE_ON flag doesn't change in the call stack. - - fifth check: but is the top-most value equal to a default one ? - */ - if (((traceon & TRACE_ON) != 0) == ((new_fflags & INCLUDE) == 0)) - return; - -yuck: - /* - Yuck! function list was changed, and one of the currently active rules - was possibly affected. For example, a tracing could've been enabled or - disabled for a function somewhere up the call stack. - To react correctly, we must go up the call stack all the way to - the top and re-match rules to set TRACE_ON bit correctly. - - We must traverse the stack forwards, not backwards. - That's what a recursive helper is doing. - It'll destroy two CODE_STATE fields, save them now. - */ - func= cs->func; - level= cs->level; - FixTraceFlags_helper(cs, func, cs->framep); - /* now we only need to restore CODE_STATE fields, and we're done */ - cs->func= func; - cs->level= level; -} - -/* - * FUNCTION - * - * _db_set_ set current debugger settings - * - * SYNOPSIS - * - * VOID _db_set_(control) - * char *control; - * - * DESCRIPTION - * - * Given pointer to a debug control string in "control", - * parses the control string, and sets up a current debug - * settings. Pushes a new debug settings if the current is - * set to the initial debugger settings. - * - */ - -void _db_set_(const char *control) -{ - CODE_STATE *cs; - uint old_fflags; - get_code_state_or_return; - old_fflags=fflags(cs); - if (cs->stack == &init_settings) - PushState(cs); - if (DbugParse(cs, control)) - FixTraceFlags(old_fflags, cs); -} - -/* - * FUNCTION - * - * _db_push_ push current debugger settings and set up new one - * - * SYNOPSIS - * - * VOID _db_push_(control) - * char *control; - * - * DESCRIPTION - * - * Given pointer to a debug control string in "control", pushes - * the current debug settings, parses the control string, and sets - * up a new debug settings with DbugParse() - * - */ - -void _db_push_(const char *control) -{ - CODE_STATE *cs; - uint old_fflags; - get_code_state_or_return; - old_fflags=fflags(cs); - PushState(cs); - if (DbugParse(cs, control)) - FixTraceFlags(old_fflags, cs); -} - - -/** - Returns TRUE if session-local settings have been set. -*/ - -int _db_is_pushed_() -{ - CODE_STATE *cs= NULL; - get_code_state_or_return FALSE; - return (cs->stack != &init_settings); -} - -/* - * FUNCTION - * - * _db_set_init_ set initial debugger settings - * - * SYNOPSIS - * - * VOID _db_set_init_(control) - * char *control; - * - * DESCRIPTION - * see _db_set_ - * - */ - -void _db_set_init_(const char *control) -{ - CODE_STATE tmp_cs; - bzero((uchar*) &tmp_cs, sizeof(tmp_cs)); - tmp_cs.stack= &init_settings; - tmp_cs.process= db_process ? db_process : "dbug"; - DbugParse(&tmp_cs, control); -} - -/* - * FUNCTION - * - * _db_pop_ pop the debug stack - * - * DESCRIPTION - * - * Pops the debug stack, returning the debug settings to its - * condition prior to the most recent _db_push_ invocation. - * Note that the pop will fail if it would remove the last - * valid settings from the stack. This prevents user errors - * in the push/pop sequence from screwing up the debugger. - * Maybe there should be some kind of warning printed if the - * user tries to pop too many states. - * - */ - -void _db_pop_() -{ - struct settings *discard; - uint old_fflags; - CODE_STATE *cs; - - get_code_state_or_return; - - discard= cs->stack; - if (discard != &init_settings) - { - old_fflags=fflags(cs); - cs->stack= discard->next; - FreeState(cs, discard, 1); - FixTraceFlags(old_fflags, cs); - } -} - -/* - * FUNCTION - * - * _db_explain_ generates 'control' string for the current settings - * - * RETURN - * 0 - ok - * 1 - buffer too short, output truncated - * - */ - -/* helper macros */ -#define char_to_buf(C) do { \ - *buf++=(C); \ - if (buf >= end) goto overflow; \ - } while (0) -#define str_to_buf(S) do { \ - char_to_buf(','); \ - buf=strnmov(buf, (S), len+1); \ - if (buf >= end) goto overflow; \ - } while (0) -#define list_to_buf(l, f) 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) -#define int_to_buf(i) do { \ - char b[50]; \ - int10_to_str((i), b, 10); \ - str_to_buf(b); \ - } while (0) -#define colon_to_buf do { \ - if (buf != start) char_to_buf(':'); \ - } while(0) -#define op_int_to_buf(C, val, def) do { \ - if ((val) != (def)) \ - { \ - colon_to_buf; \ - char_to_buf((C)); \ - int_to_buf(val); \ - } \ - } while (0) -#define op_intf_to_buf(C, val, def, cond) do { \ - if ((cond)) \ - { \ - colon_to_buf; \ - char_to_buf((C)); \ - if ((val) != (def)) int_to_buf(val); \ - } \ - } while (0) -#define op_str_to_buf(C, val, cond) do { \ - if ((cond)) \ - { \ - char *s=(val); \ - colon_to_buf; \ - char_to_buf((C)); \ - if (*s) str_to_buf(s); \ - } \ - } while (0) -#define op_list_to_buf(C, val, cond) 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) -#define op_bool_to_buf(C, cond) do { \ - if ((cond)) \ - { \ - colon_to_buf; \ - char_to_buf((C)); \ - } \ - } while (0) - -int _db_explain_ (CODE_STATE *cs, char *buf, size_t len) -{ - char *start=buf, *end=buf+len-4; - - get_code_state_if_not_set_or_return *buf=0; - - op_list_to_buf('d', cs->stack->keywords, DEBUGGING); - op_int_to_buf ('D', cs->stack->delay, 0); - op_list_to_buf('f', cs->stack->functions, cs->stack->functions); - op_bool_to_buf('F', cs->stack->flags & FILE_ON); - op_bool_to_buf('i', cs->stack->flags & PID_ON); - op_list_to_buf('g', cs->stack->p_functions, PROFILING); - op_bool_to_buf('L', cs->stack->flags & LINE_ON); - op_bool_to_buf('n', cs->stack->flags & DEPTH_ON); - op_bool_to_buf('N', cs->stack->flags & NUMBER_ON); - op_str_to_buf( - ((cs->stack->flags & FLUSH_ON_WRITE ? 0 : 32) | - (cs->stack->flags & OPEN_APPEND ? 'A' : 'O')), - cs->stack->name, cs->stack->out_file != stderr); - op_list_to_buf('p', cs->stack->processes, cs->stack->processes); - op_bool_to_buf('P', cs->stack->flags & PROCESS_ON); - op_bool_to_buf('r', cs->stack->sub_level != 0); - op_intf_to_buf('t', cs->stack->maxdepth, MAXDEPTH, TRACING); - op_bool_to_buf('T', cs->stack->flags & TIMESTAMP_ON); - - *buf= '\0'; - return 0; - -overflow: - *end++= '.'; - *end++= '.'; - *end++= '.'; - *end= '\0'; - return 1; -} - -#undef char_to_buf -#undef str_to_buf -#undef list_to_buf -#undef int_to_buf -#undef colon_to_buf -#undef op_int_to_buf -#undef op_intf_to_buf -#undef op_str_to_buf -#undef op_list_to_buf -#undef op_bool_to_buf - -/* - * FUNCTION - * - * _db_explain_init_ explain initial debugger settings - * - * DESCRIPTION - * see _db_explain_ - */ - -int _db_explain_init_(char *buf, size_t len) -{ - CODE_STATE cs; - bzero((uchar*) &cs,sizeof(cs)); - cs.stack=&init_settings; - return _db_explain_(&cs, buf, len); -} - -/* - * FUNCTION - * - * _db_enter_ process entry point to user function - * - * SYNOPSIS - * - * VOID _db_enter_(_func_, _file_, _line_, _stack_frame_) - * char *_func_; points to current function name - * char *_file_; points to current file name - * int _line_; called from source line number - * struct _db_stack_frame_ allocated on the caller's stack - * - * DESCRIPTION - * - * Called at the beginning of each user function to tell - * the debugger that a new function has been entered. - * Note that the pointers to the previous user function - * name and previous user file name are stored on the - * caller's stack (this is why the ENTER macro must be - * the first "executable" code in a function, since it - * allocates these storage locations). The previous nesting - * level is also stored on the callers stack for internal - * self consistency checks. - * - * Also prints a trace line if tracing is enabled and - * increments the current function nesting depth. - * - * Note that this mechanism allows the debugger to know - * what the current user function is at all times, without - * maintaining an internal stack for the function names. - * - */ - -void _db_enter_(const char *_func_, const char *_file_, - uint _line_, struct _db_stack_frame_ *_stack_frame_) -{ - int save_errno; - CODE_STATE *cs; - if (!((cs=code_state()))) - { - _stack_frame_->level= 0; /* Set to avoid valgrind warnings if dbug is enabled later */ - _stack_frame_->prev= 0; - return; - } - save_errno= errno; - - _stack_frame_->func= cs->func; - _stack_frame_->file= cs->file; - cs->func= _func_; - cs->file= _file_; - _stack_frame_->prev= cs->framep; - _stack_frame_->level= ++cs->level | framep_trace_flag(cs, cs->framep); - cs->framep= _stack_frame_; - - switch (DoTrace(cs)) { - case ENABLE_TRACE: - cs->framep->level|= TRACE_ON; - if (!TRACING) break; - /* fall through */ - case DO_TRACE: - if (TRACING) - { - if (!cs->locked) - pthread_mutex_lock(&THR_LOCK_dbug); - DoPrefix(cs, _line_); - Indent(cs, cs->level); - (void) fprintf(cs->stack->out_file, ">%s\n", cs->func); - DbugFlush(cs); /* This does a unlock */ - } - break; - case DISABLE_TRACE: - cs->framep->level&= ~TRACE_ON; - /* fall through */ - case DONT_TRACE: - break; - } - errno=save_errno; -} - -/* - * FUNCTION - * - * _db_return_ process exit from user function - * - * SYNOPSIS - * - * VOID _db_return_(_line_, _stack_frame_) - * int _line_; current source line number - * struct _db_stack_frame_ allocated on the caller's stack - * - * DESCRIPTION - * - * Called just before user function executes an explicit or implicit - * return. Prints a trace line if trace is enabled, decrements - * the current nesting level, and restores the current function and - * file names from the defunct function's stack. - * - */ - -void _db_return_(uint _line_, struct _db_stack_frame_ *_stack_frame_) -{ - int save_errno=errno; - uint _slevel_= _stack_frame_->level & ~TRACE_ON; - CODE_STATE *cs; - get_code_state_or_return; - - if (cs->framep != _stack_frame_) - { - char buf[512]; - my_snprintf(buf, sizeof(buf), ERR_MISSING_RETURN, cs->func); - DbugExit(buf); - } - - if (DoTrace(cs) & DO_TRACE) - { - if (TRACING) - { - if (!cs->locked) - pthread_mutex_lock(&THR_LOCK_dbug); - DoPrefix(cs, _line_); - Indent(cs, cs->level); - (void) fprintf(cs->stack->out_file, "<%s\n", cs->func); - DbugFlush(cs); - } - } - /* - Check to not set level < 0. This can happen if DBUG was disabled when - function was entered and enabled in function. - */ - cs->level= _slevel_ != 0 ? _slevel_ - 1 : 0; - cs->func= _stack_frame_->func; - cs->file= _stack_frame_->file; - if (cs->framep != NULL) - cs->framep= cs->framep->prev; - errno=save_errno; -} - - -/* - * FUNCTION - * - * _db_pargs_ log arguments for subsequent use by _db_doprnt_() - * - * SYNOPSIS - * - * VOID _db_pargs_(_line_, keyword) - * int _line_; - * char *keyword; - * - * DESCRIPTION - * - * The new universal printing macro DBUG_PRINT, which replaces - * all forms of the DBUG_N macros, needs two calls to runtime - * support routines. The first, this function, remembers arguments - * that are used by the subsequent call to _db_doprnt_(). - * - */ - -void _db_pargs_(uint _line_, const char *keyword) -{ - CODE_STATE *cs; - get_code_state_or_return; - cs->u_line= _line_; - cs->u_keyword= keyword; -} - - -/* - * FUNCTION - * - * _db_doprnt_ handle print of debug lines - * - * SYNOPSIS - * - * VOID _db_doprnt_(format, va_alist) - * char *format; - * va_dcl; - * - * DESCRIPTION - * - * When invoked via one of the DBUG macros, tests the current keyword - * set by calling _db_pargs_() to see if that macro has been selected - * for processing via the debugger control string, and if so, handles - * printing of the arguments via the format string. The line number - * of the DBUG macro in the source is found in u_line. - * - * Note that the format string SHOULD NOT include a terminating - * newline, this is supplied automatically. - * - */ - -#include <stdarg.h> - -void _db_doprnt_(const char *format,...) -{ - va_list args; - CODE_STATE *cs; - get_code_state_or_return; - - va_start(args,format); - - if (_db_keyword_(cs, cs->u_keyword, 0)) - { - int save_errno=errno; - if (!cs->locked) - pthread_mutex_lock(&THR_LOCK_dbug); - DoPrefix(cs, cs->u_line); - if (TRACING) - Indent(cs, cs->level + 1); - else - (void) fprintf(cs->stack->out_file, "%s: ", cs->func); - (void) fprintf(cs->stack->out_file, "%s: ", cs->u_keyword); - DbugVfprintf(cs->stack->out_file, format, args); - DbugFlush(cs); - errno=save_errno; - } - va_end(args); -} - -/* - * This function is intended as a - * vfprintf clone with consistent, platform independent output for - * problematic formats like %p, %zd and %lld. - */ -static void DbugVfprintf(FILE *stream, const char* format, va_list args) -{ - char cvtbuf[1024]; - (void) my_vsnprintf(cvtbuf, sizeof(cvtbuf), format, args); - (void) fprintf(stream, "%s\n", cvtbuf); -} - - -/* - * FUNCTION - * - * _db_dump_ dump a string in hex - * - * SYNOPSIS - * - * void _db_dump_(_line_,keyword,memory,length) - * int _line_; current source line number - * char *keyword; - * char *memory; Memory to print - * int length; Bytes to print - * - * DESCRIPTION - * Dump N characters in a binary array. - * Is used to examine corrupted memory or arrays. - */ - -void _db_dump_(uint _line_, const char *keyword, - const unsigned char *memory, size_t length) -{ - int pos; - CODE_STATE *cs; - get_code_state_or_return; - - if (_db_keyword_(cs, keyword, 0)) - { - if (!cs->locked) - pthread_mutex_lock(&THR_LOCK_dbug); - DoPrefix(cs, _line_); - if (TRACING) - { - Indent(cs, cs->level + 1); - pos= min(max(cs->level-cs->stack->sub_level,0)*INDENT,80); - } - else - { - fprintf(cs->stack->out_file, "%s: ", cs->func); - } - (void) fprintf(cs->stack->out_file, "%s: Memory: 0x%lx Bytes: (%ld)\n", - keyword, (ulong) memory, (long) length); - - pos=0; - while (length-- > 0) - { - uint tmp= *((unsigned char*) memory++); - if ((pos+=3) >= 80) - { - fputc('\n',cs->stack->out_file); - pos=3; - } - fputc(_dig_vec_upper[((tmp >> 4) & 15)], cs->stack->out_file); - fputc(_dig_vec_upper[tmp & 15], cs->stack->out_file); - fputc(' ',cs->stack->out_file); - } - (void) fputc('\n',cs->stack->out_file); - DbugFlush(cs); - } -} - - -/* - * FUNCTION - * - * ListAddDel modify the list according to debug control string - * - * DESCRIPTION - * - * Given pointer to a comma separated list of strings in "cltp", - * parses the list, and modifies "listp", returning a pointer - * to the new list. - * - * The mode of operation is defined by "todo" parameter. - * - * If it is INCLUDE, elements (strings from "cltp") are added to the - * list, they will have INCLUDE flag set. If the list already contains - * the string in question, new element is not added, but a flag of - * the existing element is adjusted (INCLUDE bit is set, EXCLUDE bit - * is removed). - * - * If it is EXCLUDE, elements are added to the list with the EXCLUDE - * flag set. If the list already contains the string in question, - * it is removed, new element is not added. - */ - -static struct link *ListAddDel(struct link *head, const char *ctlp, - const char *end, int todo) -{ - const char *start; - struct link **cur; - size_t len; - int subdir; - - ctlp--; -next: - while (++ctlp < end) - { - start= ctlp; - subdir=0; - while (ctlp < end && *ctlp != ',') - ctlp++; - len=ctlp-start; - if (start[len-1] == '/') - { - len--; - subdir=SUBDIR; - } - if (len == 0) continue; - for (cur=&head; *cur; cur=&((*cur)->next_link)) - { - if (!strncmp((*cur)->str, start, len)) - { - if ((*cur)->flags & todo) /* same action ? */ - (*cur)->flags|= subdir; /* just merge the SUBDIR flag */ - else if (todo == EXCLUDE) - { - struct link *delme=*cur; - *cur=(*cur)->next_link; - free((void*) delme); - } - else - { - (*cur)->flags&=~(EXCLUDE & SUBDIR); - (*cur)->flags|=INCLUDE | subdir; - } - goto next; - } - } - *cur= (struct link *) DbugMalloc(sizeof(struct link)+len); - memcpy((*cur)->str, start, len); - (*cur)->str[len]=0; - (*cur)->flags=todo | subdir; - (*cur)->next_link=0; - } - return head; -} - -/* - * FUNCTION - * - * ListCopy make a copy of the list - * - * SYNOPSIS - * - * static struct link *ListCopy(orig) - * struct link *orig; - * - * DESCRIPTION - * - * Given pointer to list, which contains a copy of every element from - * the original list. - * - * the orig pointer can be NULL - * - * Note that since each link is added at the head of the list, - * the final list will be in "reverse order", which is not - * significant for our usage here. - * - */ - -static struct link *ListCopy(struct link *orig) -{ - struct link *new_malloc; - struct link *head; - size_t len; - - head= NULL; - while (orig != NULL) - { - len= strlen(orig->str); - new_malloc= (struct link *) DbugMalloc(sizeof(struct link)+len); - memcpy(new_malloc->str, orig->str, len); - new_malloc->str[len]= 0; - new_malloc->flags=orig->flags; - new_malloc->next_link= head; - head= new_malloc; - orig= orig->next_link; - } - return head; -} - -/* - * FUNCTION - * - * InList test a given string for member of a given list - * - * DESCRIPTION - * - * Tests the string pointed to by "cp" to determine if it is in - * the list pointed to by "linkp". Linkp points to the first - * link in the list. If linkp is NULL or contains only EXCLUDE - * elements then the string is treated as if it is in the list. - * This may seem rather strange at first but leads to the desired - * operation if no list is given. The net effect is that all - * strings will be accepted when there is no list, and when there - * is a list, only those strings in the list will be accepted. - * - * RETURN - * combination of SUBDIR, INCLUDE, EXCLUDE, MATCHED flags - * - */ - -static int InList(struct link *linkp, const char *cp) -{ - int result; - - for (result=MATCHED; linkp != NULL; linkp= linkp->next_link) - { - if (!fnmatch(linkp->str, cp, 0)) - return linkp->flags; - if (!(linkp->flags & EXCLUDE)) - result=NOT_MATCHED; - if (linkp->flags & SUBDIR) - result|=SUBDIR; - } - return result; -} - -/* - * FUNCTION - * - * ListFlags returns aggregated list flags (ORed over all elements) - * - */ - -static uint ListFlags(struct link *linkp) -{ - uint f; - for (f=0; linkp != NULL; linkp= linkp->next_link) - f|= linkp->flags; - return f; -} - -/* - * FUNCTION - * - * PushState push current settings onto stack and set up new one - * - * SYNOPSIS - * - * static VOID PushState() - * - * DESCRIPTION - * - * Pushes the current settings on the settings stack, and creates - * a new settings. The new settings is NOT initialized - * - * The settings stack is a linked list of settings, with the new - * settings added at the head. This allows the stack to grow - * to the limits of memory if necessary. - * - */ - -static void PushState(CODE_STATE *cs) -{ - struct settings *new_malloc; - - new_malloc= (struct settings *) DbugMalloc(sizeof(struct settings)); - bzero(new_malloc, sizeof(struct settings)); - new_malloc->next= cs->stack; - cs->stack= new_malloc; -} - -/* - * FUNCTION - * - * FreeState Free memory associated with a struct state. - * - * SYNOPSIS - * - * static void FreeState (state) - * struct state *state; - * int free_state; - * - * DESCRIPTION - * - * Deallocates the memory allocated for various information in a - * state. If free_state is set, also free 'state' - * - */ -static void FreeState(CODE_STATE *cs, struct settings *state, int free_state) -{ - if (!is_shared(state, keywords)) - FreeList(state->keywords); - if (!is_shared(state, functions)) - FreeList(state->functions); - if (!is_shared(state, processes)) - FreeList(state->processes); - if (!is_shared(state, p_functions)) - FreeList(state->p_functions); - - if (!is_shared(state, out_file)) - DBUGCloseFile(cs, state->out_file); - else - (void) fflush(state->out_file); - - if (!is_shared(state, prof_file)) - DBUGCloseFile(cs, state->prof_file); - else - (void) fflush(state->prof_file); - - if (free_state) - free((void*) state); -} - - -/* - * FUNCTION - * - * _db_end_ End debugging, freeing state stack memory. - * - * SYNOPSIS - * - * static VOID _db_end_ () - * - * DESCRIPTION - * - * Ends debugging, de-allocating the memory allocated to the - * state stack. - * - * To be called at the very end of the program. - * - */ -void _db_end_() -{ - struct settings *discard; - static struct settings tmp; - CODE_STATE *cs; - /* - Set _dbug_on_ to be able to do full reset even when DEBUGGER_OFF was - called after dbug was initialized - */ - _dbug_on_= 1; - get_code_state_or_return; - - while ((discard= cs->stack)) - { - if (discard == &init_settings) - break; - cs->stack= discard->next; - FreeState(cs, discard, 1); - } - tmp= init_settings; - - /* Use mutex lock to make it less likely anyone access out_file */ - pthread_mutex_lock(&THR_LOCK_dbug); - init_settings.flags= OPEN_APPEND; - init_settings.out_file= stderr; - init_settings.prof_file= stderr; - init_settings.maxdepth= 0; - init_settings.delay= 0; - init_settings.sub_level= 0; - init_settings.functions= 0; - init_settings.p_functions= 0; - init_settings.keywords= 0; - init_settings.processes= 0; - pthread_mutex_unlock(&THR_LOCK_dbug); - FreeState(cs, &tmp, 0); -} - - -/* - * FUNCTION - * - * DoTrace check to see if tracing is current enabled - * - * DESCRIPTION - * - * Checks to see if dbug in this function is enabled based on - * whether the maximum trace depth has been reached, the current - * function is selected, and the current process is selected. - * - */ - -static int DoTrace(CODE_STATE *cs) -{ - if ((cs->stack->maxdepth == 0 || cs->level <= cs->stack->maxdepth) && - InList(cs->stack->processes, cs->process) & (MATCHED|INCLUDE)) - switch(InList(cs->stack->functions, cs->func)) { - case INCLUDE|SUBDIR: return ENABLE_TRACE; - case INCLUDE: return DO_TRACE; - case MATCHED|SUBDIR: - case NOT_MATCHED|SUBDIR: - case MATCHED: return framep_trace_flag(cs, cs->framep) ? - DO_TRACE : DONT_TRACE; - case EXCLUDE: - case NOT_MATCHED: return DONT_TRACE; - case EXCLUDE|SUBDIR: return DISABLE_TRACE; - } - return DONT_TRACE; -} - -FILE *_db_fp_(void) -{ - CODE_STATE *cs; - get_code_state_or_return NULL; - return cs->stack->out_file; -} - -/* - * FUNCTION - * - * _db_keyword_ test keyword for member of keyword list - * - * DESCRIPTION - * - * Test a keyword to determine if it is in the currently active - * keyword list. If strict=0, a keyword is accepted - * if the list is null, otherwise it must match one of the list - * members. When debugging is not on, no keywords are accepted. - * After the maximum trace level is exceeded, no keywords are - * accepted (this behavior subject to change). Additionally, - * the current function and process must be accepted based on - * their respective lists. - * - * Returns TRUE if keyword accepted, FALSE otherwise. - * - */ - -BOOLEAN _db_keyword_(CODE_STATE *cs, const char *keyword, int strict) -{ - get_code_state_if_not_set_or_return FALSE; - strict=strict ? INCLUDE : INCLUDE|MATCHED; - - return DEBUGGING && DoTrace(cs) & DO_TRACE && - InList(cs->stack->keywords, keyword) & strict; -} - -/* - * FUNCTION - * - * Indent indent a line to the given indentation level - * - * SYNOPSIS - * - * static VOID Indent(indent) - * int indent; - * - * DESCRIPTION - * - * Indent a line to the given level. Note that this is - * a simple minded but portable implementation. - * There are better ways. - * - * Also, the indent must be scaled by the compile time option - * of character positions per nesting level. - * - */ - -static void Indent(CODE_STATE *cs, int indent) -{ - REGISTER int count; - - indent= max(indent-1-cs->stack->sub_level,0)*INDENT; - for (count= 0; count < indent ; count++) - { - if ((count % INDENT) == 0) - fputc('|',cs->stack->out_file); - else - fputc(' ',cs->stack->out_file); - } -} - - -/* - * FUNCTION - * - * FreeList free all memory associated with a linked list - * - * SYNOPSIS - * - * static VOID FreeList(linkp) - * struct link *linkp; - * - * DESCRIPTION - * - * Given pointer to the head of a linked list, frees all - * memory held by the list and the members of the list. - * - */ - -static void FreeList(struct link *linkp) -{ - REGISTER struct link *old; - - while (linkp != NULL) - { - old= linkp; - linkp= linkp->next_link; - free((void*) old); - } -} - - -/* - * FUNCTION - * - * DoPrefix print debugger line prefix prior to indentation - * - * SYNOPSIS - * - * static VOID DoPrefix(_line_) - * int _line_; - * - * DESCRIPTION - * - * Print prefix common to all debugger output lines, prior to - * doing indentation if necessary. Print such information as - * current process name, current source file name and line number, - * and current function nesting depth. - * - */ - -static void DoPrefix(CODE_STATE *cs, uint _line_) -{ - cs->lineno++; - if (cs->stack->flags & PID_ON) - { - (void) fprintf(cs->stack->out_file, "%-7s: ", my_thread_name()); - } - if (cs->stack->flags & NUMBER_ON) - (void) fprintf(cs->stack->out_file, "%5d: ", cs->lineno); - if (cs->stack->flags & TIMESTAMP_ON) - { -#ifdef __WIN__ - /* FIXME This doesn't give microseconds as in Unix case, and the resolution is - in system ticks, 10 ms intervals. See my_getsystime.c for high res */ - SYSTEMTIME loc_t; - GetLocalTime(&loc_t); - (void) fprintf (cs->stack->out_file, - /* "%04d-%02d-%02d " */ - "%02d:%02d:%02d.%06d ", - /*tm_p->tm_year + 1900, tm_p->tm_mon + 1, tm_p->tm_mday,*/ - loc_t.wHour, loc_t.wMinute, loc_t.wSecond, loc_t.wMilliseconds); -#else - struct timeval tv; - struct tm *tm_p; - if (gettimeofday(&tv, NULL) != -1) - { - if ((tm_p= localtime((const time_t *)&tv.tv_sec))) - { - (void) fprintf (cs->stack->out_file, - /* "%04d-%02d-%02d " */ - "%02d:%02d:%02d.%06d ", - /*tm_p->tm_year + 1900, tm_p->tm_mon + 1, tm_p->tm_mday,*/ - tm_p->tm_hour, tm_p->tm_min, tm_p->tm_sec, - (int) (tv.tv_usec)); - } - } -#endif - } - if (cs->stack->flags & PROCESS_ON) - (void) fprintf(cs->stack->out_file, "%s: ", cs->process); - if (cs->stack->flags & FILE_ON) - (void) fprintf(cs->stack->out_file, "%14s: ", BaseName(cs->file)); - if (cs->stack->flags & LINE_ON) - (void) fprintf(cs->stack->out_file, "%5d: ", _line_); - if (cs->stack->flags & DEPTH_ON) - (void) fprintf(cs->stack->out_file, "%4d: ", cs->level); -} - - -/* - * FUNCTION - * - * DBUGOpenFile open new output stream for debugger output - * - * SYNOPSIS - * - * static VOID DBUGOpenFile(name) - * char *name; - * - * DESCRIPTION - * - * Given name of a new file (or "-" for stdout) opens the file - * and sets the output stream to the new file. - * - */ - -static void DBUGOpenFile(CODE_STATE *cs, - const char *name,const char *end,int append) -{ - REGISTER FILE *fp; - REGISTER BOOLEAN newfile; - - if (name != NULL) - { - if (end) - { - size_t len=end-name; - memcpy(cs->stack->name, name, len); - cs->stack->name[len]=0; - } - else - strmov(cs->stack->name,name); - name=cs->stack->name; - if (strcmp(name, "-") == 0) - { - cs->stack->out_file= stdout; - cs->stack->flags |= FLUSH_ON_WRITE; - cs->stack->name[0]=0; - } - else - { - if (!Writable(name)) - { - (void) fprintf(stderr, ERR_OPEN, cs->process, name); - perror(""); - fflush(stderr); - } - else - { - newfile= !EXISTS(name); - if (!(fp= fopen(name, append ? "a+" : "w"))) - { - (void) fprintf(stderr, ERR_OPEN, cs->process, name); - perror(""); - fflush(stderr); - } - else - { - cs->stack->out_file= fp; - } - } - } - } -} - -/* - * FUNCTION - * - * DBUGCloseFile close the debug output stream - * - * SYNOPSIS - * - * static VOID DBUGCloseFile(fp) - * FILE *fp; - * - * DESCRIPTION - * - * Closes the debug output stream unless it is standard output - * or standard error. - * - */ - -static void DBUGCloseFile(CODE_STATE *cs, FILE *fp) -{ - if (fp != NULL && fp != stderr && fp != stdout && fclose(fp) == EOF) - { - pthread_mutex_lock(&THR_LOCK_dbug); - (void) fprintf(cs->stack->out_file, ERR_CLOSE, cs->process); - perror(""); - DbugFlush(cs); - } -} - - -/* - * FUNCTION - * - * DbugExit print error message and exit - * - * SYNOPSIS - * - * static VOID DbugExit(why) - * char *why; - * - * DESCRIPTION - * - * Prints error message using current process name, the reason for - * aborting (typically out of memory), and exits with status 1. - * This should probably be changed to use a status code - * defined in the user's debugger include file. - * - */ - -static void DbugExit(const char *why) -{ - CODE_STATE *cs=code_state(); - (void) fprintf(stderr, ERR_ABORT, cs ? cs->process : "(null)", why); - (void) fflush(stderr); - DBUG_ABORT(); -} - - -/* - * FUNCTION - * - * DbugMalloc allocate memory for debugger runtime support - * - * SYNOPSIS - * - * static long *DbugMalloc(size) - * int size; - * - * DESCRIPTION - * - * Allocate more memory for debugger runtime support functions. - * Failure to to allocate the requested number of bytes is - * immediately fatal to the current process. This may be - * rather unfriendly behavior. It might be better to simply - * print a warning message, freeze the current debugger cs, - * and continue execution. - * - */ - -static char *DbugMalloc(size_t size) -{ - register char *new_malloc; - - if (!(new_malloc= (char*) malloc(size))) - DbugExit("out of memory"); - return new_malloc; -} - - -/* - * strtok lookalike - splits on ':', magically handles ::, :\ and :/ - */ - -static const char *DbugStrTok(const char *s) -{ - while (s[0] && (s[0] != ':' || - (s[1] == '\\' || s[1] == '/' || (s[1] == ':' && s++)))) - s++; - return s; -} - - -/* - * FUNCTION - * - * BaseName strip leading pathname components from name - * - * SYNOPSIS - * - * static char *BaseName(pathname) - * char *pathname; - * - * DESCRIPTION - * - * Given pointer to a complete pathname, locates the base file - * name at the end of the pathname and returns a pointer to - * it. - * - */ - -static const char *BaseName(const char *pathname) -{ - register const char *base; - - base= strrchr(pathname, FN_LIBCHAR); - if (base++ == NullS) - base= pathname; - return base; -} - - -/* - * FUNCTION - * - * Writable test to see if a pathname is writable/creatable - * - * SYNOPSIS - * - * static BOOLEAN Writable(pathname) - * char *pathname; - * - * DESCRIPTION - * - * Because the debugger might be linked in with a program that - * runs with the set-uid-bit (suid) set, we have to be careful - * about opening a user named file for debug output. This consists - * of checking the file for write access with the real user id, - * or checking the directory where the file will be created. - * - * Returns TRUE if the user would normally be allowed write or - * create access to the named file. Returns FALSE otherwise. - * - */ - - -#ifndef Writable - -static BOOLEAN Writable(const char *pathname) -{ - REGISTER BOOLEAN granted; - REGISTER char *lastslash; - - granted= FALSE; - if (EXISTS(pathname)) - { - if (WRITABLE(pathname)) - granted= TRUE; - } - else - { - lastslash= strrchr(pathname, '/'); - if (lastslash != NULL) - *lastslash= '\0'; - else - pathname= "."; - if (WRITABLE(pathname)) - granted= TRUE; - if (lastslash != NULL) - *lastslash= '/'; - } - return granted; -} -#endif - - -/* - * FUNCTION - * - * _db_setjmp_ save debugger environment - * - * SYNOPSIS - * - * VOID _db_setjmp_() - * - * DESCRIPTION - * - * Invoked as part of the user's DBUG_SETJMP macro to save - * the debugger environment in parallel with saving the user's - * environment. - * - */ - -#ifdef HAVE_LONGJMP - -EXPORT void _db_setjmp_() -{ - CODE_STATE *cs; - get_code_state_or_return; - - cs->jmplevel= cs->level; - cs->jmpfunc= cs->func; - cs->jmpfile= cs->file; -} - -/* - * FUNCTION - * - * _db_longjmp_ restore previously saved debugger environment - * - * SYNOPSIS - * - * VOID _db_longjmp_() - * - * DESCRIPTION - * - * Invoked as part of the user's DBUG_LONGJMP macro to restore - * the debugger environment in parallel with restoring the user's - * previously saved environment. - * - */ - -EXPORT void _db_longjmp_() -{ - CODE_STATE *cs; - get_code_state_or_return; - - cs->level= cs->jmplevel; - if (cs->jmpfunc) - cs->func= cs->jmpfunc; - if (cs->jmpfile) - cs->file= cs->jmpfile; -} -#endif - -/* - * FUNCTION - * - * perror perror simulation for systems that don't have it - * - * SYNOPSIS - * - * static VOID perror(s) - * char *s; - * - * DESCRIPTION - * - * Perror produces a message on the standard error stream which - * provides more information about the library or system error - * just encountered. The argument string s is printed, followed - * by a ':', a blank, and then a message and a newline. - * - * An undocumented feature of the unix perror is that if the string - * 's' is a null string (NOT a NULL pointer!), then the ':' and - * blank are not printed. - * - * This version just complains about an "unknown system error". - * - */ - -#ifndef HAVE_PERROR -static void perror(s) -char *s; -{ - if (s && *s != '\0') - (void) fprintf(stderr, "%s: ", s); - (void) fprintf(stderr, "<unknown system error>\n"); -} -#endif /* HAVE_PERROR */ - - - /* flush dbug-stream, free mutex lock & wait delay */ - /* This is because some systems (MSDOS!!) dosn't flush fileheader */ - /* and dbug-file isn't readable after a system crash !! */ - -static void DbugFlush(CODE_STATE *cs) -{ - if (cs->stack->flags & FLUSH_ON_WRITE) - { - (void) fflush(cs->stack->out_file); - if (cs->stack->delay) - (void) Delay(cs->stack->delay); - } - if (!cs->locked) - pthread_mutex_unlock(&THR_LOCK_dbug); -} /* DbugFlush */ - - -/* For debugging */ - -void _db_flush_() -{ - CODE_STATE *cs= NULL; - get_code_state_or_return; - (void) fflush(cs->stack->out_file); -} - - -#ifndef __WIN__ -void _db_suicide_() -{ - int retval; - sigset_t new_mask; - sigfillset(&new_mask); - - fprintf(stderr, "SIGKILL myself\n"); - fflush(stderr); - - retval= kill(getpid(), SIGKILL); - assert(retval == 0); - retval= sigsuspend(&new_mask); - fprintf(stderr, "sigsuspend returned %d errno %d \n", retval, errno); - assert(FALSE); /* With full signal mask, we should never return here. */ -} -#endif /* ! __WIN__ */ - - -void _db_lock_file_() -{ - CODE_STATE *cs; - get_code_state_or_return; - pthread_mutex_lock(&THR_LOCK_dbug); - cs->locked=1; -} - -void _db_unlock_file_() -{ - CODE_STATE *cs; - get_code_state_or_return; - cs->locked=0; - pthread_mutex_unlock(&THR_LOCK_dbug); -} - -const char* _db_get_func_(void) -{ - CODE_STATE *cs; - get_code_state_or_return NULL; - return cs->func; -} - - -#else - -/* - * Dummy function, workaround for MySQL bug#14420 related - * build failure on a platform where linking with an empty - * archive fails. - * - * This block can be removed as soon as a fix for bug#14420 - * is implemented. - */ -int i_am_a_dummy_function() { - return 0; -} - -#endif |