X-Git-Url: http://mj.ucw.cz/gitweb/?a=blobdiff_plain;ds=sidebyside;f=lib%2Fpagecache.h;h=a9368df9e4172913dac58745b8cbabeb0aae1fb8;hb=c49e8f00da4d1f214621a19364c64e30fa4afc7c;hp=67450e796e850b4bcf27f1b19136597c81e92516;hpb=6c02b97b704be77292bcedd9c457130414885b10;p=libucw.git

diff --git a/lib/pagecache.h b/lib/pagecache.h
index 67450e79..a9368df9 100644
--- a/lib/pagecache.h
+++ b/lib/pagecache.h
@@ -1,7 +1,10 @@
 /*
  *	Sherlock Library -- File Page Cache
  *
- *	(c) 1999 Martin Mares <mj@atrey.karlin.mff.cuni.cz>
+ *	(c) 1999--2002 Martin Mares <mj@ucw.cz>
+ *
+ *	This software may be freely distributed and used according to the terms
+ *	of the GNU Lesser General Public License.
  */
 
 #ifndef _SHERLOCK_PAGECACHE_H
@@ -14,7 +17,8 @@ struct page_cache;
 struct page {
   node n;				/* Node in page list */
   node hn;				/* Node in hash table */
-  sh_off_t key;				/* Lower bits contain file handle */
+  sh_off_t pos;
+  uns fd;
   uns flags;
   uns lock_count;
   byte data[0];
@@ -25,13 +29,14 @@ struct page {
 
 struct page_cache *pgc_open(uns page_size, uns max_pages);
 void pgc_close(struct page_cache *);
-void pgc_debug(struct page_cache *);
+void pgc_debug(struct page_cache *, int mode);
 void pgc_flush(struct page_cache *);				/* Write all unwritten pages */
 void pgc_cleanup(struct page_cache *);				/* Deallocate all unused buffers */
 struct page *pgc_read(struct page_cache *, int fd, sh_off_t);	/* Read page and lock it */
 struct page *pgc_get(struct page_cache *, int fd, sh_off_t);	/* Get page for writing */
+struct page *pgc_get_zero(struct page_cache *, int fd, sh_off_t); /* ... and clear it */
 void pgc_put(struct page_cache *, struct page *);		/* Release page */
-void pgc_put_dirty(struct page_cache *, struct page *);		/* Mark page as dirty and release it */
+void pgc_mark_dirty(struct page_cache *, struct page *);	/* Mark locked page as dirty */
 byte *pgc_read_data(struct page_cache *, int fd, sh_off_t, uns *);	/* Partial reading */
 
 #endif