Manual merge of the 4.0.24 compile changes into the 4.1 tree.

include/my_sys.h

@@ -189,11 +189,13 @@ void   __CDECL hfree(void *ptr);
 #endif
 #endif /* MSDOS */
 
+#ifndef errno				/* did we already get it? */
 #ifdef HAVE_ERRNO_AS_DEFINE
 #include <errno.h>			/* errno is a define */
 #else
 extern int errno;			/* declare errno */
 #endif
+#endif					/* #ifndef errno */
 extern const char ** NEAR my_errmsg[];
 extern char NEAR errbuff[NRERRBUFFS][ERRMSGSIZE];
 extern char *home_dir;			/* Home directory for user */

mysys/hash.c

@@ -175,7 +175,7 @@ static uint hash_rec_mask(HASH *hash,HASH_LINK *pos,uint buffmax,
 
 /* for compilers which can not handle inline */
 static
-#if !defined(__SUNPRO_C) && !defined(__USLC__) && !defined(__sgi)
+#if !defined(__USLC__) && !defined(__sgi)
 inline
 #endif
 unsigned int rec_hashnr(HASH *hash,const byte *record)

mysys/my_bitmap.c

@@ -16,18 +16,7 @@
 
 /*
   Handling of uchar arrays as large bitmaps.
-
-  API limitations (or, rather asserted safety assumptions,
-  to encourage correct programming)
-
-    * the size of the used bitmap is less than ~(uint) 0
-    * it's a multiple of 8 (for efficiency reasons)
-    * when arguments are a bitmap and a bit number, the number
-      must be within bitmap size
-    * bitmap_set_prefix() is an exception - one can use ~0 to set all bits
-    * when both arguments are bitmaps, they must be of the same size
-    * bitmap_intersect() is an exception :)
-      (for for Bitmap::intersect(ulonglong map2buff))
+  We assume that the size of the used bitmap is less than ~(uint) 0
 
   TODO:
   Make assembler THREAD safe versions of these using test-and-set instructions
@@ -35,76 +24,60 @@
 
 #include "mysys_priv.h"
 #include <my_bitmap.h>
+#include <assert.h>
 #include <m_string.h>
 
-
-static inline void bitmap_lock(MY_BITMAP *map)
+static inline void bitmap_lock(MY_BITMAP* map)
 {
 #ifdef THREAD
-  if (map->mutex)
-    pthread_mutex_lock(map->mutex);
+  if (map->thread_safe)
+    pthread_mutex_lock(&map->mutex);
 #endif
 }
 
-
-static inline void bitmap_unlock(MY_BITMAP *map)
+static inline void bitmap_unlock(MY_BITMAP* map)
 {
 #ifdef THREAD
-  if (map->mutex)
-    pthread_mutex_unlock(map->mutex);
+  if (map->thread_safe)
+    pthread_mutex_unlock(&map->mutex);
 #endif
 }
 
-
-my_bool bitmap_init(MY_BITMAP *map, uchar *buf, uint bitmap_size,
-		    my_bool thread_safe)
+my_bool bitmap_init(MY_BITMAP *map, uint bitmap_size, my_bool thread_safe)
 {
-  DBUG_ENTER("bitmap_init");
-
-  DBUG_ASSERT((bitmap_size & 7) == 0);
-  bitmap_size/=8;
-  if (!(map->bitmap=buf) &&
-      !(map->bitmap= (uchar*) my_malloc(bitmap_size +
-					(thread_safe ?
-					 sizeof(pthread_mutex_t) : 0),
-					MYF(MY_WME | MY_ZEROFILL))))
+  if (!(map->bitmap=(uchar*) my_malloc((bitmap_size+7)/8,
+				       MYF(MY_WME | MY_ZEROFILL))))
     return 1;
-  map->bitmap_size=bitmap_size;
+  DBUG_ASSERT(bitmap_size != ~(uint) 0);
 #ifdef THREAD
-  if (thread_safe)
-  {
-    map->mutex=(pthread_mutex_t *)(map->bitmap+bitmap_size);
-    pthread_mutex_init(map->mutex, MY_MUTEX_INIT_FAST);
-  }
-  else
-    map->mutex=0;
+  if ((map->thread_safe = thread_safe))
+    pthread_mutex_init(&map->mutex, MY_MUTEX_INIT_FAST);
 #endif
-  DBUG_RETURN(0);
+  map->bitmap_size=bitmap_size;
+  return 0;
 }
 
-
 void bitmap_free(MY_BITMAP *map)
 {
-  DBUG_ENTER("bitmap_free");
   if (map->bitmap)
   {
-#ifdef THREAD
-    if (map->mutex)
-      pthread_mutex_destroy(map->mutex);
-#endif
     my_free((char*) map->bitmap, MYF(0));
     map->bitmap=0;
+#ifdef THREAD
+    if (map->thread_safe)
+      pthread_mutex_destroy(&map->mutex);
+#endif
   }
-  DBUG_VOID_RETURN;
 }
 
-
 void bitmap_set_bit(MY_BITMAP *map, uint bitmap_bit)
 {
-  DBUG_ASSERT(map->bitmap && bitmap_bit < map->bitmap_size*8);
-  bitmap_lock(map);
-  bitmap_fast_set_bit(map, bitmap_bit);
-  bitmap_unlock(map);
+  if (bitmap_bit < map->bitmap_size)
+  {
+    bitmap_lock(map);
+    map->bitmap[bitmap_bit / 8] |= (1 << (bitmap_bit & 7));
+    bitmap_unlock(map);
+  }
 }
 
 
@@ -112,10 +85,9 @@ uint bitmap_set_next(MY_BITMAP *map)
 {
   uchar *bitmap=map->bitmap;
   uint bit_found = MY_BIT_NONE;
-  uint bitmap_size=map->bitmap_size*8;
+  uint bitmap_size=map->bitmap_size;
   uint i;
 
-  DBUG_ASSERT(map->bitmap);
   bitmap_lock(map);
   for (i=0; i < bitmap_size ; i++, bitmap++)
   {
@@ -141,191 +113,32 @@ uint bitmap_set_next(MY_BITMAP *map)
 
 void bitmap_clear_bit(MY_BITMAP *map, uint bitmap_bit)
 {
-  DBUG_ASSERT(map->bitmap && bitmap_bit < map->bitmap_size*8);
-  bitmap_lock(map);
-  bitmap_fast_clear_bit(map, bitmap_bit);
-  bitmap_unlock(map);
-}
-
-
-void bitmap_set_prefix(MY_BITMAP *map, uint prefix_size)
-{
-  uint prefix_bytes, prefix_bits;
-
-  DBUG_ASSERT(map->bitmap &&
-	      (prefix_size <= map->bitmap_size*8 || prefix_size == (uint) ~0));
-  bitmap_lock(map);
-  set_if_smaller(prefix_size, map->bitmap_size*8);
-  if ((prefix_bytes= prefix_size / 8))
-    memset(map->bitmap, 0xff, prefix_bytes);
-  if ((prefix_bits= prefix_size & 7))
-    map->bitmap[prefix_bytes++]= (1 << prefix_bits)-1;
-  if (prefix_bytes < map->bitmap_size)
-    bzero(map->bitmap+prefix_bytes, map->bitmap_size-prefix_bytes);
-  bitmap_unlock(map);
-}
-
-
-void bitmap_clear_all(MY_BITMAP *map)
-{
-  bitmap_set_prefix(map, 0);
-}
-
-
-void bitmap_set_all(MY_BITMAP *map)
-{
-  bitmap_set_prefix(map, ~0);
-}
-
-
-my_bool bitmap_is_prefix(const MY_BITMAP *map, uint prefix_size)
-{
-  uint prefix_bits= prefix_size & 7, res= 0;
-  uchar *m= map->bitmap, *end_prefix= map->bitmap+prefix_size/8,
-        *end= map->bitmap+map->bitmap_size;
-
-  DBUG_ASSERT(map->bitmap && prefix_size <= map->bitmap_size*8);
-
-  bitmap_lock((MY_BITMAP *)map);
-  while (m < end_prefix)
-    if (*m++ != 0xff)
-      goto ret;
-
-  if (prefix_bits && *m++ != (1 << prefix_bits)-1)
-    goto ret;
-
-  while (m < end)
-    if (*m++ != 0)
-      goto ret;
-
-  res=1;
-ret:
-  bitmap_unlock((MY_BITMAP *)map);
-  return res;
-}
-
-
-my_bool bitmap_is_clear_all(const MY_BITMAP *map)
-{
-  return bitmap_is_prefix(map, 0);
-}
-
-my_bool bitmap_is_set_all(const MY_BITMAP *map)
-{
-  return bitmap_is_prefix(map, map->bitmap_size*8);
-}
-
-
-my_bool bitmap_is_set(const MY_BITMAP *map, uint bitmap_bit)
-{
-  DBUG_ASSERT(map->bitmap && bitmap_bit < map->bitmap_size*8);
-  return bitmap_fast_is_set(map, bitmap_bit);
-}
-
-
-my_bool bitmap_is_subset(const MY_BITMAP *map1, const MY_BITMAP *map2)
-{
-  uint res=0;
-  uchar *m1=map1->bitmap, *m2=map2->bitmap, *end;
-
-  DBUG_ASSERT(map1->bitmap && map2->bitmap &&
-              map1->bitmap_size==map2->bitmap_size);
-  bitmap_lock((MY_BITMAP *)map1);
-  bitmap_lock((MY_BITMAP *)map2);
-
-  end= m1+map1->bitmap_size;
-
-  while (m1 < end)
+  if (bitmap_bit < map->bitmap_size)
   {
-    if ((*m1++) & ~(*m2++))
-      goto ret;
+    bitmap_lock(map);
+    map->bitmap[bitmap_bit / 8] &= ~ (1 << (bitmap_bit & 7));
+    bitmap_unlock(map);
   }
-
-  res=1;
-ret:
-  bitmap_unlock((MY_BITMAP *)map2);
-  bitmap_unlock((MY_BITMAP *)map1);
-  return res;
-}
-
-
-my_bool bitmap_cmp(const MY_BITMAP *map1, const MY_BITMAP *map2)
-{
-  uint res;
-
-  DBUG_ASSERT(map1->bitmap && map2->bitmap &&
-              map1->bitmap_size==map2->bitmap_size);
-  bitmap_lock((MY_BITMAP *)map1);
-  bitmap_lock((MY_BITMAP *)map2);
-
-  res= memcmp(map1->bitmap, map2->bitmap, map1->bitmap_size)==0;
-
-  bitmap_unlock((MY_BITMAP *)map2);
-  bitmap_unlock((MY_BITMAP *)map1);
-  return res;
 }
 
 
-void bitmap_intersect(MY_BITMAP *map, const MY_BITMAP *map2)
+void bitmap_set_all(MY_BITMAP* map)
 {
-  uchar *to=map->bitmap, *from=map2->bitmap, *end;
-  uint len=map->bitmap_size, len2=map2->bitmap_size;
-
-  DBUG_ASSERT(map->bitmap && map2->bitmap);
   bitmap_lock(map);
-  bitmap_lock((MY_BITMAP *)map2);
-
-  end= to+min(len,len2);
-
-  while (to < end)
-    *to++ &= *from++;
-
-  if (len2 < len)
-  {
-    end+=len-len2;
-    while (to < end)
-      *to++=0;
-  }
-
-  bitmap_unlock((MY_BITMAP *)map2);
+  memset(map->bitmap, 0xff, (map->bitmap_size+7)/8);
   bitmap_unlock(map);
 }
 
-
-void bitmap_subtract(MY_BITMAP *map, const MY_BITMAP *map2)
+my_bool bitmap_is_set(MY_BITMAP* map, uint bitmap_bit)
 {
-  uchar *to=map->bitmap, *from=map2->bitmap, *end;
-
-  DBUG_ASSERT(map->bitmap && map2->bitmap &&
-              map->bitmap_size==map2->bitmap_size);
-  bitmap_lock(map);
-  bitmap_lock((MY_BITMAP *)map2);
-
-  end= to+map->bitmap_size;
-
-  while (to < end)
-    *to++ &= ~(*from++);
-
-  bitmap_unlock((MY_BITMAP *)map2);
-  bitmap_unlock(map);
+  return (bitmap_bit < map->bitmap_size) ?
+    (map->bitmap[bitmap_bit / 8] & (1 << (bitmap_bit & 7))) :
+    0;
 }
 
-
-void bitmap_union(MY_BITMAP *map, const MY_BITMAP *map2)
+void bitmap_clear_all(MY_BITMAP* map)
 {
-  uchar *to=map->bitmap, *from=map2->bitmap, *end;
-
-  DBUG_ASSERT(map->bitmap && map2->bitmap &&
-              map->bitmap_size==map2->bitmap_size);
   bitmap_lock(map);
-  bitmap_lock((MY_BITMAP *)map2);
-
-  end= to+map->bitmap_size;
-
-  while (to < end)
-    *to++ |= *from++;
-
-  bitmap_unlock((MY_BITMAP *)map2);
+  bzero(map->bitmap,(map->bitmap_size+7)/8);
   bitmap_unlock(map);
 }
-