Commit 18fd0b94 authored by unknown's avatar unknown
Browse files

Merge bk-internal.mysql.com:/home/bk/mysql-5.0 

into mishka.local:/home/my/mysql-5.0
parents 9a8d59b0 2380fc93

include/myisam.h

+3 −3
Original line number Diff line number Diff line
@@ -190,10 +190,10 @@ typedef struct st_columndef /* column information */ 
typedef void (* invalidator_by_filename)(const char * filename);



extern my_string myisam_log_filename;		/* Name of logfile */

extern uint myisam_block_size;

extern ulong myisam_block_size;

extern ulong myisam_concurrent_insert;

extern my_bool myisam_flush,myisam_delay_key_write,myisam_single_user;

extern my_bool myisam_concurrent_insert;

extern my_off_t myisam_max_temp_length,myisam_max_extra_temp_length;

extern my_off_t myisam_max_temp_length;

extern ulong myisam_bulk_insert_tree_size, myisam_data_pointer_size;



	/* Prototypes for myisam-functions */

include/thr_lock.h

+2 −2
Original line number Diff line number Diff line
@@ -91,7 +91,7 @@ typedef struct st_thr_lock { 
  /* write_lock_count is incremented for write locks and reset on read locks */

  ulong write_lock_count;

  uint read_no_write_count;

  void (*get_status)(void*);		/* When one gets a lock */

  void (*get_status)(void*, int);	/* When one gets a lock */

  void (*copy_status)(void*,void*);

  void (*update_status)(void*);		/* Before release of write */

  my_bool (*check_status)(void *);

myisam/mi_create.c

+3 −4
Original line number Diff line number Diff line
@@ -191,11 +191,10 @@ int mi_create(const char *name,uint keys,MI_KEYDEF *keydefs, 
      test(test_all_bits(options, HA_OPTION_CHECKSUM | HA_PACK_RECORD));

  min_pack_length+=packed;



  if (!ci->data_file_length)

  if (!ci->data_file_length && ci->max_rows)

  {

    if (ci->max_rows == 0 || pack_reclength == INT_MAX32)

      ci->data_file_length= INT_MAX32-1;		/* Should be enough */

    else if ((~(ulonglong) 0)/ci->max_rows < (ulonglong) pack_reclength)

    if (pack_reclength == INT_MAX32 ||

             (~(ulonglong) 0)/ci->max_rows < (ulonglong) pack_reclength)

      ci->data_file_length= ~(ulonglong) 0;

    else

      ci->data_file_length=(ulonglong) ci->max_rows*pack_reclength;

myisam/mi_dynrec.c

+8 −4
Original line number Diff line number Diff line
@@ -149,7 +149,9 @@ static int write_dynamic_record(MI_INFO *info, const byte *record, 
  {

    if (_mi_find_writepos(info,reclength,&filepos,&length))

      goto err;

    if (_mi_write_part_record(info,filepos,length,info->s->state.dellink,

    if (_mi_write_part_record(info,filepos,length,

                              (info->append_insert_at_end ?

                               HA_OFFSET_ERROR : info->s->state.dellink),

			      (byte**) &record,&reclength,&flag))

      goto err;

  } while (reclength);
@@ -171,7 +173,8 @@ static int _mi_find_writepos(MI_INFO *info, 
  ulong tmp;

  DBUG_ENTER("_mi_find_writepos");



  if (info->s->state.dellink != HA_OFFSET_ERROR)

  if (info->s->state.dellink != HA_OFFSET_ERROR &&

      !info->append_insert_at_end)

  {

    /* Deleted blocks exists;  Get last used block */

    *filepos=info->s->state.dellink;
@@ -420,8 +423,9 @@ int _mi_write_part_record(MI_INFO *info, 
  else if (length-long_block < *reclength+4)

  {						/* To short block */

    if (next_filepos == HA_OFFSET_ERROR)

      next_filepos=info->s->state.dellink != HA_OFFSET_ERROR ?

	info->s->state.dellink : info->state->data_file_length;

      next_filepos= (info->s->state.dellink != HA_OFFSET_ERROR &&

                     !info->append_insert_at_end ?

                     info->s->state.dellink : info->state->data_file_length);

    if (*flag == 0)				/* First block */

    {

      if (*reclength > MI_MAX_BLOCK_LENGTH)

myisam/mi_locking.c

+38 −7
Original line number Diff line number Diff line
@@ -238,13 +238,24 @@ int mi_lock_database(MI_INFO *info, int lock_type) 
  The following functions are called by thr_lock() in threaded applications

****************************************************************************/



void mi_get_status(void* param)

/*

  Create a copy of the current status for the table



  SYNOPSIS

    mi_get_status()

    param		Pointer to Myisam handler

    concurrent_insert	Set to 1 if we are going to do concurrent inserts

			(THR_WRITE_CONCURRENT_INSERT was used)

*/



void mi_get_status(void* param, int concurrent_insert)

{

  MI_INFO *info=(MI_INFO*) param;

  DBUG_ENTER("mi_get_status");

  DBUG_PRINT("info",("key_file: %ld  data_file: %ld",

  DBUG_PRINT("info",("key_file: %ld  data_file: %ld  concurrent_insert: %d",

		     (long) info->s->state.state.key_file_length,

		     (long) info->s->state.state.data_file_length));

		     (long) info->s->state.state.data_file_length,

                     concurrent_insert));

#ifndef DBUG_OFF

  if (info->state->key_file_length > info->s->state.state.key_file_length ||

      info->state->data_file_length > info->s->state.state.data_file_length)
@@ -254,9 +265,11 @@ void mi_get_status(void* param) 
#endif

  info->save_state=info->s->state.state;

  info->state= &info->save_state;

  info->append_insert_at_end= concurrent_insert;

  DBUG_VOID_RETURN;

}





void mi_update_status(void* param)

{

  MI_INFO *info=(MI_INFO*) param;
@@ -281,6 +294,7 @@ void mi_update_status(void* param) 
    info->s->state.state= *info->state;

    info->state= &info->s->state.state;

  }

  info->append_insert_at_end= 0;



  /*

    We have to flush the write cache here as other threads may start
@@ -307,10 +321,17 @@ void mi_copy_status(void* to,void *from) 
  Check if should allow concurrent inserts



  IMPLEMENTATION

    Don't allow concurrent inserts if we have a hole in the table.

    Allow concurrent inserts if we don't have a hole in the table or

    if there is no active write lock and there is active read locks and 

    myisam_concurrent_insert == 2. In this last case the new

    row('s) are inserted at end of file instead of filling up the hole.



    The last case is to allow one to inserts into a heavily read-used table

    even if there is holes.



  NOTES

    Rtree indexes are disabled in mi_open()

    If there is a an rtree indexes in the table, concurrent inserts are

    disabled in mi_open()



  RETURN

    0  ok to use concurrent inserts
@@ -320,7 +341,17 @@ void mi_copy_status(void* to,void *from) 
my_bool mi_check_status(void *param)

{

  MI_INFO *info=(MI_INFO*) param;

  return (my_bool) (info->s->state.dellink != HA_OFFSET_ERROR);

  /*

    The test for w_locks == 1 is here because this thread has already done an

    external lock (in other words: w_locks == 1 means no other threads has

    a write lock)

  */

  DBUG_PRINT("info",("dellink: %ld  r_locks: %u  w_locks: %u",

                     (long) info->s->state.dellink, (uint) info->s->r_locks,

                     (uint) info->s->w_locks));

  return (my_bool) !(info->s->state.dellink == HA_OFFSET_ERROR ||

                     (myisam_concurrent_insert == 2 && info->s->r_locks &&

                      info->s->w_locks == 1));

}