===================================================================
RCS file: /cvs/mandoc/mansearch.c,v
retrieving revision 1.27
retrieving revision 1.28
diff -u -p -r1.27 -r1.28
--- mandoc/mansearch.c	2014/04/10 02:46:21	1.27
+++ mandoc/mansearch.c	2014/04/11 15:46:52	1.28
@@ -1,4 +1,4 @@
-/*	$Id: mansearch.c,v 1.27 2014/04/10 02:46:21 schwarze Exp $ */
+/*	$Id: mansearch.c,v 1.28 2014/04/11 15:46:52 schwarze Exp $ */
 /*
  * Copyright (c) 2012 Kristaps Dzonsons <kristaps@bsd.lv>
  * Copyright (c) 2013, 2014 Ingo Schwarze <schwarze@openbsd.org>
@@ -19,6 +19,7 @@
 #include "config.h"
 #endif
 
+#include <sys/mman.h>
 #include <assert.h>
 #include <fcntl.h>
 #include <getopt.h>
@@ -99,6 +100,53 @@ static	void		 sql_match(sqlite3_context *context,
 static	void		 sql_regexp(sqlite3_context *context,
 				int argc, sqlite3_value **argv);
 static	char		*sql_statement(const struct expr *);
+
+int
+mansearch_setup(int start)
+{
+	static void	*pagecache;
+	int		 c;
+
+#define	PC_PAGESIZE	1280
+#define	PC_NUMPAGES	256
+
+	if (start) {
+		if (NULL != pagecache) {
+			fprintf(stderr, "pagecache already enabled\n");
+			return((int)MANDOCLEVEL_BADARG);
+		}
+
+		pagecache = mmap(NULL, PC_PAGESIZE * PC_NUMPAGES,
+		    PROT_READ | PROT_WRITE, MAP_ANON, -1, 0);
+
+		if (MAP_FAILED == pagecache) {
+			perror("mmap");
+			pagecache = NULL;
+			return((int)MANDOCLEVEL_SYSERR);
+		}
+
+		c = sqlite3_config(SQLITE_CONFIG_PAGECACHE,
+		    pagecache, PC_PAGESIZE, PC_NUMPAGES);
+
+		if (SQLITE_OK == c)
+			return((int)MANDOCLEVEL_OK);
+
+		fprintf(stderr, "pagecache: %s\n", sqlite3_errstr(c));
+
+	} else if (NULL == pagecache) {
+		fprintf(stderr, "pagecache missing\n");
+		return((int)MANDOCLEVEL_BADARG);
+	}
+
+	if (-1 == munmap(pagecache, PC_PAGESIZE * PC_NUMPAGES)) {
+		perror("munmap");
+		pagecache = NULL;
+		return((int)MANDOCLEVEL_SYSERR);
+	}
+
+	pagecache = NULL;
+	return((int)MANDOCLEVEL_OK);
+}
 
 int
 mansearch(const struct mansearch *search,