Many files:

  Added multiple key cache


myisam/mi_page.c:
  Added multiple key cache
myisam/mi_delete_all.c:
  Added multiple key cache
myisam/mi_extra.c:
  Added multiple key cache
myisam/mi_locking.c:
  Added multiple key cache
myisam/mi_panic.c:
  Added multiple key cache
myisam/mi_preload.c:
  Added multiple key cache
myisam/mi_check.c:
  Added multiple key cache
myisam/myisamchk.c:
  Added multiple key cache
myisam/myisamlog.c:
  Added multiple key cache
myisam/mi_close.c:
  Added multiple key cache
myisam/mi_test1.c:
  Added multiple key cache
myisam/mi_test2.c:
  Added multiple key cache
myisam/mi_test3.c:
  Added multiple key cache
isam/_page.c:
  Added multiple key cache
isam/_locking.c:
  Added multiple key cache
isam/panic.c:
  Added multiple key cache
isam/close.c:
  Added multiple key cache
isam/isamchk.c:
  Added multiple key cache
isam/test2.c:
  Added multiple key cache
isam/test3.c:
  Added multiple key cache
mysys/mf_keycache.c:
  Added multiple key cache
include/my_sys.h:
  Added multiple key cache

7 files changed, 27 insertions, 21 deletions

diff --git a/isam/_locking.c b/isam/_locking.c
index be9741a4237..3964f7e8ddf 100644
--- a/isam/_locking.c
+++ b/isam/_locking.c
@@ -50,7 +50,7 @@ int nisam_lock_database(N_INFO *info, int lock_type)
     else
       count= --share->w_locks;
     if (info->lock_type == F_WRLCK && !share->w_locks &&
-	flush_key_blocks(share->kfile,FLUSH_KEEP))
+	flush_key_blocks(dflt_keycache,share->kfile,FLUSH_KEEP))
       error=my_errno;
     if (info->opt_flag & (READ_CACHE_USED | WRITE_CACHE_USED))
       if (end_io_cache(&info->rec_cache))
@@ -329,7 +329,7 @@ int _nisam_test_if_changed(register N_INFO *info)
 	share->state.uniq    != info->last_uniq)
     {						/* Keyfile has changed */
       if (share->state.process != share->this_process)
-	VOID(flush_key_blocks(share->kfile,FLUSH_RELEASE));
+	VOID(flush_key_blocks(dflt_keycache,share->kfile,FLUSH_RELEASE));
       share->last_process=share->state.process;
       info->last_loop=	share->state.loop;
       info->last_uniq=	share->state.uniq;
diff --git a/isam/_page.c b/isam/_page.c
index 65733d66b77..fc150cf14bd 100644
--- a/isam/_page.c
+++ b/isam/_page.c
@@ -27,10 +27,11 @@ uchar *_nisam_fetch_keypage(register N_INFO *info, N_KEYDEF *keyinfo,
 			    my_off_t page, uchar *buff, int return_buffer)
 {
   uchar *tmp;
-  tmp=(uchar*) key_cache_read(info->s->kfile,page,(byte*) buff,
-			     (uint) keyinfo->base.block_length,
-			     (uint) keyinfo->base.block_length,
-			     return_buffer);
+  tmp=(uchar*) key_cache_read(dflt_keycache,
+                              info->s->kfile,page,(byte*) buff,
+			      (uint) keyinfo->base.block_length,
+			      (uint) keyinfo->base.block_length,
+			      return_buffer);
   if (tmp == info->buff)
   {
     info->update|=HA_STATE_BUFF_SAVED;
@@ -83,9 +84,10 @@ int _nisam_write_keypage(register N_INFO *info, register N_KEYDEF *keyinfo,
     length=keyinfo->base.block_length;
   }
 #endif
-  return (key_cache_write(info->s->kfile,page,(byte*) buff,length,
-			 (uint) keyinfo->base.block_length,
-			 (int) (info->lock_type != F_UNLCK)));
+  return (key_cache_write(dflt_keycache,
+                          info->s->kfile,page,(byte*) buff,length,
+			  (uint) keyinfo->base.block_length,
+			  (int) (info->lock_type != F_UNLCK)));
 } /* nisam_write_keypage */
 
 
@@ -99,7 +101,8 @@ int _nisam_dispose(register N_INFO *info, N_KEYDEF *keyinfo, my_off_t pos)
 
   old_link=info->s->state.key_del[keynr];
   info->s->state.key_del[keynr]=(ulong) pos;
-  DBUG_RETURN(key_cache_write(info->s->kfile,pos,(byte*) &old_link,
+  DBUG_RETURN(key_cache_write(dflt_keycache,
+                              info->s->kfile,pos,(byte*) &old_link,
 			      sizeof(long),
 			      (uint) keyinfo->base.block_length,
 			      (int) (info->lock_type != F_UNLCK)));
@@ -126,7 +129,8 @@ ulong _nisam_new(register N_INFO *info, N_KEYDEF *keyinfo)
   }
   else
   {
-    if (!key_cache_read(info->s->kfile,pos,
+    if (!key_cache_read(dflt_keycache,
+                        info->s->kfile,pos,
 			(byte*) &info->s->state.key_del[keynr],
 			(uint) sizeof(long),
 			(uint) keyinfo->base.block_length,0))
diff --git a/isam/close.c b/isam/close.c
index f1465990100..075d67d60f5 100644
--- a/isam/close.c
+++ b/isam/close.c
@@ -56,7 +56,8 @@ int nisam_close(register N_INFO *info)
 
   if (flag)
   {
-    if (share->kfile >= 0 && flush_key_blocks(share->kfile,FLUSH_RELEASE))
+    if (share->kfile >= 0 && 
+        flush_key_blocks(dflt_keycache,share->kfile,FLUSH_RELEASE))
       error=my_errno;
     if (share->kfile >= 0 && my_close(share->kfile,MYF(0)))
       error = my_errno;
diff --git a/isam/isamchk.c b/isam/isamchk.c
index dc772290e13..d3db440bf87 100644
--- a/isam/isamchk.c
+++ b/isam/isamchk.c
@@ -516,7 +516,8 @@ static int nisamchk(my_string filename)
       if (!rep_quick)
       {
 	if (testflag & T_EXTEND)
-	  VOID(init_key_cache(use_buffers));
+	  VOID(init_key_cache(&dflt_keycache,dflt_key_block_size,
+                              use_buffers));
 	VOID(init_io_cache(&read_cache,datafile,(uint) read_buffer_length,
 			  READ_CACHE,share->pack.header_length,1,
 			  MYF(MY_WME)));
@@ -1459,7 +1460,7 @@ my_string name;
     printf("Data records: %lu\n",(ulong) share->state.records);
   }
 
-  VOID(init_key_cache(use_buffers));
+  VOID(init_key_cache(&dflt_keycache,dflt_key_block_size,use_buffers));
   if (init_io_cache(&read_cache,info->dfile,(uint) read_buffer_length,
 		   READ_CACHE,share->pack.header_length,1,MYF(MY_WME)))
     goto err;
@@ -1887,12 +1888,12 @@ static void lock_memory(void)
 static int flush_blocks(file)
 File file;
 {
-  if (flush_key_blocks(file,FLUSH_RELEASE))
+  if (flush_key_blocks(dflt_keycache,file,FLUSH_RELEASE))
   {
     print_error("%d when trying to write bufferts",my_errno);
     return(1);
   }
-  end_key_cache();
+  end_key_cache(&dflt_keycache,1);
   return 0;
 } /* flush_blocks */
 
@@ -1936,7 +1937,7 @@ int write_info;
   if (share->state.key_root[sort_key] == NI_POS_ERROR)
     DBUG_RETURN(0);				/* Nothing to do */
 
-  init_key_cache(use_buffers);
+  init_key_cache(&dflt_keycache,dflt_key_block_size,use_buffers);
   if (init_io_cache(&info->rec_cache,-1,(uint) write_buffer_length,
 		   WRITE_CACHE,share->pack.header_length,1,
 		   MYF(MY_WME | MY_WAIT_IF_FULL)))
diff --git a/isam/panic.c b/isam/panic.c
index e51e83671df..53e8762afd3 100644
--- a/isam/panic.c
+++ b/isam/panic.c
@@ -48,7 +48,7 @@ int nisam_panic(enum ha_panic_function flag)
       if (info->s->base.options & HA_OPTION_READ_ONLY_DATA)
 	break;
 #endif
-      if (flush_key_blocks(info->s->kfile,FLUSH_RELEASE))
+      if (flush_key_blocks(dflt_keycache,info->s->kfile,FLUSH_RELEASE))
 	error=my_errno;
       if (info->opt_flag & WRITE_CACHE_USED)
 	if (flush_io_cache(&info->rec_cache))
diff --git a/isam/test2.c b/isam/test2.c
index c8f97ccdefa..68d2ee7a82a 100644
--- a/isam/test2.c
+++ b/isam/test2.c
@@ -156,7 +156,7 @@ int main(int argc, char *argv[])
     goto err;
   printf("- Writing key:s\n");
   if (key_cacheing)
-    init_key_cache(IO_SIZE*16);		/* Use a small cache */
+    init_key_cache(&dflt_keycache,dflt_key_block_size,IO_SIZE*16);		/* Use a small cache */
   if (locking)
     nisam_lock_database(file,F_WRLCK);
   if (write_cacheing)
@@ -674,7 +674,7 @@ end:
     puts("Locking used");
   if (use_blob)
     puts("blobs used");
-  end_key_cache();
+  end_key_cache(&dflt_keycache,1);
   if (blob_buffer)
     my_free(blob_buffer,MYF(0));
   my_end(MY_CHECK_ERROR | MY_GIVE_INFO);
diff --git a/isam/test3.c b/isam/test3.c
index 228030f5832..b753b6d4dac 100644
--- a/isam/test3.c
+++ b/isam/test3.c
@@ -173,7 +173,7 @@ void start_test(int id)
     exit(1);
   }
   if (key_cacheing && rnd(2) == 0)
-    init_key_cache(65536L);
+    init_key_cache(&dflt_keycache,dflt_key_block_size,65536L);
   printf("Process %d, pid: %d\n",id,(int) getpid()); fflush(stdout);
 
   for (error=i=0 ; i < tests && !error; i++)