static int check_lock(struct st_lock_list *list, const char* lock_type,
const char *where, my_bool same_owner, my_bool no_cond)
{
THR_LOCK_DATA *data,**prev;
uint count=0;
THR_LOCK_INFO *first_owner= NULL;
prev= &list->data;
if (list->data)
{
enum thr_lock_type last_lock_type=list->data->type;
if (same_owner && list->data)
first_owner= list->data->owner;
for (data=list->data; data && count++ < MAX_LOCKS ; data=data->next)
{
if (data->type != last_lock_type)
last_lock_type=TL_IGNORE;
if (data->prev != prev)
{
my_message_stderr(0, "prev link %d didn't point at "
"previous lock at %s: %s", count, lock_type, where);
return 1;
}
if (same_owner &&
!thr_lock_owner_equal(data->owner, first_owner) &&
last_lock_type != TL_WRITE_ALLOW_WRITE)
{
my_message_stderr(0, "Found locks from different threads "
"in %s: %s", lock_type, where);
return 1;
}
if (no_cond && data->cond)
{
my_message_stderr(0, "Found active lock with not reset "
"cond %s: %s", lock_type, where);
return 1;
}
prev= &data->next;
}
if (data)
{
my_message_stderr(0, "found too many locks at %s: %s",
lock_type, where);
return 1;
}
}
if (prev != list->last)
{
my_message_stderr(0, "last didn't point at last lock at %s: %s",
lock_type, where);
return 1;
}
return 0;
}
time_t my_time(myf flags)
{
time_t t;
/*
The following loop is here beacuse time() may fail on some systems.
We're using a hardcoded my_message_stderr() here rather than going
through the hook in my_message_local() because it's far too easy to
come full circle with any logging function that writes timestamps ...
*/
while ((t= time(0)) == (time_t) -1)
{
if (flags & MY_WME)
my_message_stderr(0, "time() call failed", MYF(0));
}
return t;
}
/**
Issue a message locally (i.e. on the same host the program is
running on, don't transmit to a client).
This is the default value for local_message_hook, and therefore
the default printer for my_message_local(). mysys users should
not call this directly, but go through my_message_local() instead.
This printer prepends an Error/Warning/Note label to the string,
then prints it to stderr using my_message_stderr().
Since my_message_stderr() appends a '\n', the format string
should not end in a newline.
@param ll log level: (ERROR|WARNING|INFORMATION)_LEVEL
the printer may use these to filter for verbosity
@param format a format string a la printf. Should not end in '\n'
@param args parameters to go with that format string
*/
void my_message_local_stderr(enum loglevel ll,
const char *format, va_list args)
{
char buff[1024];
size_t len;
DBUG_ENTER("my_message_local_stderr");
len= my_snprintf(buff, sizeof(buff), "[%s] ",
(ll == ERROR_LEVEL ? "ERROR" : ll == WARNING_LEVEL ?
"Warning" : "Note"));
my_vsnprintf(buff + len, sizeof(buff) - len, format, args);
my_message_stderr(0, buff, MYF(0));
DBUG_VOID_RETURN;
}
static void check_locks(THR_LOCK *lock, const char *where,
my_bool allow_no_locks)
{
uint old_found_errors=found_errors;
DBUG_ENTER("check_locks");
if (found_errors < MAX_FOUND_ERRORS)
{
if (check_lock(&lock->write,"write",where,1,1) |
check_lock(&lock->write_wait,"write_wait",where,0,0) |
check_lock(&lock->read,"read",where,0,1) |
check_lock(&lock->read_wait,"read_wait",where,0,0))
found_errors++;
if (found_errors < MAX_FOUND_ERRORS)
{
uint count=0;
THR_LOCK_DATA *data;
for (data=lock->read.data ; data ; data=data->next)
{
if ((int) data->type == (int) TL_READ_NO_INSERT)
count++;
/* Protect against infinite loop. */
DBUG_ASSERT(count <= lock->read_no_write_count);
}
if (count != lock->read_no_write_count)
{
found_errors++;
my_message_stderr(0, "at '%s': Locks read_no_write_count "
"was %u when it should have been %u",
where, lock->read_no_write_count,count);
}
if (!lock->write.data)
{
if (!allow_no_locks && !lock->read.data &&
(lock->write_wait.data || lock->read_wait.data))
{
found_errors++;
my_message_stderr(0, "at '%s': No locks in use but locks "
"are in wait queue", where);
}
if (!lock->write_wait.data)
{
if (!allow_no_locks && lock->read_wait.data)
{
found_errors++;
my_message_stderr(0, "at '%s': No write locks and "
"waiting read locks", where);
}
}
else
{
if (!allow_no_locks &&
(((lock->write_wait.data->type == TL_WRITE_CONCURRENT_INSERT ||
lock->write_wait.data->type == TL_WRITE_ALLOW_WRITE) &&
!lock->read_no_write_count)))
{
found_errors++;
my_message_stderr(0, "at '%s': Write lock %d waiting "
"while no exclusive read locks",
where, (int) lock->write_wait.data->type);
}
}
}
else
{ /* Have write lock */
if (lock->write_wait.data)
{
if (!allow_no_locks &&
lock->write.data->type == TL_WRITE_ALLOW_WRITE &&
lock->write_wait.data->type == TL_WRITE_ALLOW_WRITE)
{
found_errors++;
my_message_stderr(0, "at '%s': Found WRITE_ALLOW_WRITE "
"lock waiting for WRITE_ALLOW_WRITE lock", where);
}
}
if (lock->read.data)
{
if (!thr_lock_owner_equal(lock->write.data->owner,
lock->read.data->owner) &&
((lock->write.data->type > TL_WRITE_CONCURRENT_INSERT &&
lock->write.data->type != TL_WRITE_ONLY) ||
((lock->write.data->type == TL_WRITE_CONCURRENT_INSERT ||
lock->write.data->type == TL_WRITE_ALLOW_WRITE) &&
lock->read_no_write_count)))
{
found_errors++;
my_message_stderr(0, "at '%s': Found lock of type %d "
"that is write and read locked",
where, lock->write.data->type);
DBUG_PRINT("warning",("At '%s': Found lock of type %d that is write and read locked\n",
where, lock->write.data->type));
}
}
if (lock->read_wait.data)
{
if (!allow_no_locks && lock->write.data->type <= TL_WRITE_CONCURRENT_INSERT &&
lock->read_wait.data->type <= TL_READ_HIGH_PRIORITY)
{
found_errors++;
my_message_stderr(0, "at '%s': Found read lock of "
"type %d waiting for write lock of type %d",
where, (int) lock->read_wait.data->type,
(int) lock->write.data->type);
}
}
}
}
if (found_errors != old_found_errors)
{
DBUG_PRINT("error",("Found wrong lock"));
}
}
DBUG_VOID_RETURN;
}
void my_end(int infoflag)
{
/*
this code is suboptimal to workaround a bug in
Sun CC: Sun C++ 5.6 2004/06/02 for x86, and should not be
optimized until this compiler is not in use anymore
*/
FILE *info_file= DBUG_FILE;
my_bool print_info= (info_file != stderr);
if (!my_init_done)
return;
/*
We do not use DBUG_ENTER here, as after cleanup DBUG is no longer
operational, so we cannot use DBUG_RETURN.
*/
DBUG_PRINT("info",("Shutting down: infoflag: %d print_info: %d",
infoflag, print_info));
if (!info_file)
{
info_file= stderr;
print_info= 0;
}
if ((infoflag & MY_CHECK_ERROR) || print_info)
{ /* Test if some file is left open */
if (my_file_opened | my_stream_opened)
{
char ebuff[512];
my_snprintf(ebuff, sizeof(ebuff), EE(EE_OPEN_WARNING),
my_file_opened, my_stream_opened);
my_message_stderr(EE_OPEN_WARNING, ebuff, ME_BELL);
DBUG_PRINT("error", ("%s", ebuff));
my_print_open_files();
}
}
free_charsets();
my_error_unregister_all();
my_once_free();
if ((infoflag & MY_GIVE_INFO) || print_info)
{
#ifdef HAVE_GETRUSAGE
struct rusage rus;
#ifdef HAVE_purify
/* Purify assumes that rus is uninitialized after getrusage call */
bzero((char*) &rus, sizeof(rus));
#endif
if (!getrusage(RUSAGE_SELF, &rus))
fprintf(info_file,"\n\
User time %.2f, System time %.2f\n\
Maximum resident set size %ld, Integral resident set size %ld\n\
Non-physical pagefaults %ld, Physical pagefaults %ld, Swaps %ld\n\
Blocks in %ld out %ld, Messages in %ld out %ld, Signals %ld\n\
Voluntary context switches %ld, Involuntary context switches %ld\n",
(rus.ru_utime.tv_sec * SCALE_SEC +
rus.ru_utime.tv_usec / SCALE_USEC) / 100.0,
(rus.ru_stime.tv_sec * SCALE_SEC +
rus.ru_stime.tv_usec / SCALE_USEC) / 100.0,
rus.ru_maxrss, rus.ru_idrss,
rus.ru_minflt, rus.ru_majflt,
rus.ru_nswap, rus.ru_inblock, rus.ru_oublock,
rus.ru_msgsnd, rus.ru_msgrcv, rus.ru_nsignals,
rus.ru_nvcsw, rus.ru_nivcsw);
#endif
#if defined(__WIN__) && defined(_MSC_VER)
_CrtSetReportMode( _CRT_WARN, _CRTDBG_MODE_FILE );
_CrtSetReportFile( _CRT_WARN, _CRTDBG_FILE_STDERR );
_CrtSetReportMode( _CRT_ERROR, _CRTDBG_MODE_FILE );
_CrtSetReportFile( _CRT_ERROR, _CRTDBG_FILE_STDERR );
_CrtSetReportMode( _CRT_ASSERT, _CRTDBG_MODE_FILE );
_CrtSetReportFile( _CRT_ASSERT, _CRTDBG_FILE_STDERR );
_CrtCheckMemory();
_CrtDumpMemoryLeaks();
#endif
}
if (!(infoflag & MY_DONT_FREE_DBUG))
{
DBUG_END(); /* Must be done before my_thread_end */
}
my_thread_end();
my_thread_global_end();
#if defined(SAFE_MUTEX)
/*
Check on destroying of mutexes. A few may be left that will get cleaned
up by C++ destructors
*/
safe_mutex_end((infoflag & (MY_GIVE_INFO | MY_CHECK_ERROR)) ? stderr :
(FILE *) 0);
#endif /* defined(SAFE_MUTEX) */
#ifdef __WIN__
if (have_tcpip)
WSACleanup();
#endif /* __WIN__ */
my_init_done=0;
} /* my_end */