Don't abort if we call my_thread_end() multiple times

Fixed new introduced bug in my_time.c

mysql-test/valgrind.supp.orig

-#
-# Suppress some common (not fatal) errors in system libraries found by valgrind
-#
-
-#
-# Pthread doesn't free all thread specific memory before program exists
-#
-{
-   pthread allocate_tls memory loss
-   Memcheck:Leak
-   fun:calloc
-   fun:_dl_allocate_tls
-   fun:allocate_stack
-   fun:pthread_create@@GLIBC_2.1
-}
-
-{
-   pthread allocate_dtv memory loss
-   Memcheck:Leak
-   fun:calloc
-   fun:allocate_dtv
-   fun:_dl_allocate_tls_storage
-   fun:__GI__dl_allocate_tls
-   fun:pthread_create
-}
-
-{
-   pthread allocate_dtv memory loss second
-   Memcheck:Leak
-   fun:calloc
-   fun:allocate_dtv
-   fun:_dl_allocate_tls
-   fun:pthread_create*
-}
-
-{
-   pthread allocate_dtv memory loss second
-   Memcheck:Leak
-   fun:calloc
-   fun:allocate_dtv
-   fun:_dl_allocate_tls
-   fun:pthread_create*
-}
-
-{
-   pthread memalign memory loss
-   Memcheck:Leak
-   fun:memalign
-   fun:_dl_allocate_tls_storage
-   fun:__GI__dl_allocate_tls
-   fun:pthread_create
-}
-
-{
-   pthread pthread_key_create
-   Memcheck:Leak
-   fun:malloc
-   fun:*
-   fun:*
-   fun:pthread_key_create
-   fun:my_thread_global_init
-}
-
-{
-   pthread strstr uninit
-   Memcheck:Cond
-   fun:strstr
-   obj:/lib/tls/libpthread.so.*
-   obj:/lib/tls/libpthread.so.*
-   fun:call_init
-   fun:_dl_init
-   obj:/lib/ld-*.so
-}
-
-{
-   pthread strstr uninit
-   Memcheck:Cond
-   fun:strstr
-   obj:/lib/tls/libpthread.so.*
-   obj:/lib/tls/libpthread.so.*
-   fun:call_init
-   fun:_dl_init
-   obj:/lib/ld-*.so
-}
-
-{
-   pthread errno
-   Memcheck:Leak
-   fun:calloc
-   fun:_dlerror_run
-   fun:dlsym
-   fun:__errno_location
-}
-
-
-#
-# Warnings in libz becasue it works with aligned memory(?)
-#
-
-{
-   libz tr_flush_block
-   Memcheck:Cond
-   fun:_tr_flush_block
-   fun:deflate_slow
-   fun:deflate
-   fun:do_flush
-   fun:gzclose
-}
-
-{
-   libz tr_flush_block2
-   Memcheck:Cond
-   fun:_tr_flush_block
-   fun:deflate_slow
-   fun:deflate
-   fun:compress2
-}
-
-{
-   libz longest_match
-   Memcheck:Cond
-   fun:longest_match
-   fun:deflate_slow
-   fun:deflate
-   fun:do_flush
-}
-
-{
-   libz longest_match2
-   Memcheck:Cond
-   fun:longest_match
-   fun:deflate_slow
-   fun:deflate
-   fun:compress2
-}
-
-{
-   libz deflate
-   Memcheck:Cond
-   obj:*/libz.so.*
-   obj:*/libz.so.*
-   fun:deflate
-   fun:compress2
-}
-
-{
-   libz deflate2
-   Memcheck:Cond
-   obj:*/libz.so.*
-   obj:*/libz.so.*
-   fun:deflate
-   obj:*/libz.so.*
-   fun:gzflush
-}
-
-{
-   libz deflate3
-   Memcheck:Cond
-   obj:*/libz.so.*
-   obj:*/libz.so.*
-   fun:deflate
-   fun:do_flush
-}
-
-#
-# Warning from my_thread_init becasue mysqld dies before kill thread exists
-#
-
-{
-   my_thread_init kill thread memory loss second
-   Memcheck:Leak
-   fun:calloc
-   fun:my_thread_init
-   fun:kill_server_thread
-}
-
-#
-# Warning when printing stack trace (to suppress some not needed warnings)
-#
-
-{
-   vprintf on stacktrace
-   Memcheck:Cond
-   fun:vfprintf
-   fun:uffered_vfprintf
-   fun:vfprintf
-   fun:fprintf
-   fun:print_stacktrace
-}

mysys/my_thr_init.c

@@ -120,20 +120,22 @@ my_bool my_thread_global_init(void)
 void my_thread_global_end(void)
 {
   struct timespec abstime;
-  set_timespec(abstime, my_thread_end_wait_time);
   my_bool all_threads_killed= 1;
 
+  set_timespec(abstime, my_thread_end_wait_time);
   pthread_mutex_lock(&THR_LOCK_threads);
-  while (THR_thread_count)
+  while (THR_thread_count > 0)
   {
     int error= pthread_cond_timedwait(&THR_COND_threads, &THR_LOCK_threads,
                                       &abstime);
     if (error == ETIMEDOUT || error == ETIME)
     {
       if (THR_thread_count)
-        fprintf(stderr,"error in my_thread_global_end(): %d threads didn't exit\n",
+        fprintf(stderr,
+                "Error in my_thread_global_end(): %d threads didn't exit\n",
                 THR_thread_count);
       all_threads_killed= 0;
+      break;
     }
   }
   pthread_mutex_unlock(&THR_LOCK_threads);
@@ -169,10 +171,23 @@ void my_thread_global_end(void)
 static long thread_id=0;
 
 /*
+  Allocate thread specific memory for the thread, used by mysys and dbug
+
+  SYNOPSIS
+    my_thread_init()
+
+  NOTES
     We can't use mutex_locks here if we are using windows as
     we may have compiled the program with SAFE_MUTEX, in which
     case the checking of mutex_locks will not work until
     the pthread_self thread specific variable is initialized.
+
+   This function may called multiple times for a thread, for example
+   if one uses my_init() followed by mysql_server_init().
+
+  RETURN
+    0  ok
+    1  Fatal error; mysys/dbug functions can't be used
 */
 
 my_bool my_thread_init(void)
@@ -224,14 +239,26 @@ end:
 }
 
 
+/*
+  Deallocate memory used by the thread for book-keeping
+
+  SYNOPSIS
+    my_thread_end()
+
+  NOTE
+    This may be called multiple times for a thread.
+    This happens for example when one calls 'mysql_server_init()'
+    mysql_server_end() and then ends with a mysql_end().
+*/
+
 void my_thread_end(void)
 {
   struct st_my_thread_var *tmp;
   tmp= my_pthread_getspecific(struct st_my_thread_var*,THR_KEY_mysys);
 
 #ifdef EXTRA_DEBUG_THREADS
-  fprintf(stderr,"my_thread_end(): tmp=%p,thread_id=%ld\n",
-	  tmp,pthread_self());
+  fprintf(stderr,"my_thread_end(): tmp: 0x%lx  thread_id=%ld\n",
+	  (long) tmp, pthread_self());
 #endif  
   if (tmp && tmp->init)
   {
@@ -253,15 +280,23 @@ void my_thread_end(void)
 #else
     tmp->init= 0;
 #endif
+
+    /*
+      Decrement counter for number of running threads. We are using this
+      in my_thread_global_end() to wait until all threads have called
+      my_thread_end and thus freed all memory they have allocated in
+      my_thread_init() and DBUG_xxxx
+    */
+    pthread_mutex_lock(&THR_LOCK_threads);
+    DBUG_ASSERT(THR_thread_count != 0);
+    if (--THR_thread_count == 0)
+      pthread_cond_signal(&THR_COND_threads);
+   pthread_mutex_unlock(&THR_LOCK_threads);
   }
   /* The following free has to be done, even if my_thread_var() is 0 */
 #if !defined(__WIN__) || defined(USE_TLS)
   pthread_setspecific(THR_KEY_mysys,0);
 #endif
-  pthread_mutex_lock(&THR_LOCK_threads);
-  if (--THR_thread_count == 0)
-    pthread_cond_signal(&THR_COND_threads);
-  pthread_mutex_unlock(&THR_LOCK_threads);
 }
 
 struct st_my_thread_var *_my_thread_var(void)

sql-common/my_time.c

@@ -547,9 +547,9 @@ my_bool str_to_time(const char *str, uint length, MYSQL_TIME *l_time,
   {
     /* String given as one number; assume HHMMSS format */
     date[0]= 0;
-    date[1]= ((ulong) value)/10000;
-    date[2]= ((ulong) value)/100 % 100;
-    date[3]= ((ulong) value) % 100;
+    date[1]= (ulong) (value/10000);
+    date[2]= (ulong) (value/100 % 100);
+    date[3]= (ulong) (value % 100);
     state=4;
     goto fractional;
   }

sql/sql_cache.cc

@@ -1039,7 +1039,6 @@ Query_cache::send_result_to_client(THD *thd, char *sql, uint query_length)
     while (sql[i]=='(')
       i++;
 
-
     /*
       Test if the query is a SELECT
       (pre-space is removed in dispatch_command).
@@ -1051,7 +1050,7 @@ Query_cache::send_result_to_client(THD *thd, char *sql, uint query_length)
     if ((my_toupper(system_charset_info, sql[i])     != 'S' ||
          my_toupper(system_charset_info, sql[i + 1]) != 'E' ||
          my_toupper(system_charset_info, sql[i + 2]) != 'L') &&
-        sql[0] != '/')
+        sql[i] != '/')
     {
       DBUG_PRINT("qcache", ("The statement is not a SELECT; Not cached"));
       goto err;

sql/tztime.cc

@@ -1743,7 +1743,7 @@ my_tz_init(THD *org_thd, const char *default_tzname, my_bool bootstrap)
     tz_leapcnt++;
 
     DBUG_PRINT("info",
-      ("time_zone_leap_second table: tz_leapcnt:%u  tt_time: %lu  offset: %ld",
+               ("time_zone_leap_second table: tz_leapcnt: %u  tt_time: %lu  offset: %ld",
                 tz_leapcnt, (ulong) tz_lsis[tz_leapcnt-1].ls_trans,
                 tz_lsis[tz_leapcnt-1].ls_corr));