X-Git-Url: http://mj.ucw.cz/gitweb/?a=blobdiff_plain;ds=inline;f=lib%2Fsorter%2Fcommon.h;h=70e10c08f84a620dc19a4c6d10e9fff9b226d8b8;hb=d119c8b3262d795777679f55015588771453d51f;hp=db414dd08c6c033e99124ce00b373b68997a3881;hpb=5a78c3505ae7fa76a061e26676450049ec5946d5;p=libucw.git

diff --git a/lib/sorter/common.h b/lib/sorter/common.h
index db414dd0..70e10c08 100644
--- a/lib/sorter/common.h
+++ b/lib/sorter/common.h
@@ -15,6 +15,7 @@
 /* Configuration, some of the variables are used by the old sorter, too. */
 extern uns sorter_trace, sorter_presort_bufsize, sorter_stream_bufsize;
 extern uns sorter_debug, sorter_min_radix_bits, sorter_max_radix_bits;
+extern uns sorter_min_multiway_bits, sorter_max_multiway_bits;
 extern u64 sorter_bufsize;
 extern struct fb_params sorter_fb_params;
 
@@ -26,6 +27,7 @@ enum sort_debug {
   SORT_DEBUG_NO_JOIN = 2,
   SORT_DEBUG_KEEP_BUCKETS = 4,
   SORT_DEBUG_NO_RADIX = 8,
+  SORT_DEBUG_NO_MULTIWAY = 16,
 };
 
 struct sort_bucket;
@@ -54,6 +56,9 @@ struct sort_context {
   // Bucket arrays are NULL-terminated.
   void (*twoway_merge)(struct sort_context *ctx, struct sort_bucket **ins, struct sort_bucket **outs);
 
+  // Multi-way merge: merge an arbitrary number of source buckets to a single destination bucket.
+  void (*multiway_merge)(struct sort_context *ctx, struct sort_bucket **ins, struct sort_bucket *out);
+
   // Radix split according to hash function
   void (*radix_split)(struct sort_context *ctx, struct sort_bucket *in, struct sort_bucket **outs, uns bitpos, uns numbits);
 
@@ -108,6 +113,5 @@ sh_off_t sbuck_size(struct sort_bucket *b);
 struct fastbuf *sbuck_read(struct sort_bucket *b);
 struct fastbuf *sbuck_write(struct sort_bucket *b);
 void sbuck_swap_out(struct sort_bucket *b);
-void format_size(byte *buf, u64 x);
 
 #endif