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-rw-r--r--mansearch.c48
1 files changed, 48 insertions, 0 deletions
diff --git a/mansearch.c b/mansearch.c
index a4348d64..b6c00a9a 100644
--- a/mansearch.c
+++ b/mansearch.c
@@ -19,6 +19,7 @@
#include "config.h"
#endif
+#include <sys/mman.h>
#include <assert.h>
#include <fcntl.h>
#include <getopt.h>
@@ -101,6 +102,53 @@ static void sql_regexp(sqlite3_context *context,
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,
const struct manpaths *paths,
int argc, char *argv[],