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-rw-r--r--src/journal/mmap-cache.c25
1 files changed, 23 insertions, 2 deletions
diff --git a/src/journal/mmap-cache.c b/src/journal/mmap-cache.c
index 6c9194a1a5..117dc2f3a5 100644
--- a/src/journal/mmap-cache.c
+++ b/src/journal/mmap-cache.c
@@ -72,6 +72,9 @@ struct MMapCache {
int n_ref;
unsigned n_windows;
+ unsigned n_hit, n_missed;
+
+
Hashmap *fds;
Hashmap *contexts;
@@ -542,13 +545,19 @@ int mmap_cache_get(
/* Check whether the current context is the right one already */
r = try_context(m, fd, prot, context, keep_always, offset, size, ret);
- if (r != 0)
+ if (r != 0) {
+ m->n_hit ++;
return r;
+ }
/* Search for a matching mmap */
r = find_mmap(m, fd, prot, context, keep_always, offset, size, ret);
- if (r != 0)
+ if (r != 0) {
+ m->n_hit ++;
return r;
+ }
+
+ m->n_missed++;
/* Create a new mmap */
return add_mmap(m, fd, prot, context, keep_always, offset, size, st, ret);
@@ -578,3 +587,15 @@ void mmap_cache_close_context(MMapCache *m, unsigned context) {
context_free(c);
}
+
+unsigned mmap_cache_get_hit(MMapCache *m) {
+ assert(m);
+
+ return m->n_hit;
+}
+
+unsigned mmap_cache_get_missed(MMapCache *m) {
+ assert(m);
+
+ return m->n_missed;
+}