Count the number of cleanups performed, in stats

When running a busy ccache, it is useful to keep track of the number
of cleanups performed to know when you need to increase the cache size.

The number shown is actually the number of subdirectories, so when
you do a full cleanup the counter usually increases by 16 (not just 1).

1 files changed, 5 insertions, 0 deletions

diff --git a/test.sh b/test.sh
index 29a0e1ac..9aeeee3c 100755
--- a/test.sh
+++ b/test.sh
@@ -2030,6 +2030,7 @@ cleanup_suite() {
     checkfilecount 0 '*.d' $CCACHE_DIR
     checkfilecount 0 '*.stderr' $CCACHE_DIR
     checkstat 'files in cache' 0
+    checkstat 'cleanups performed' 1
 
     testname="forced cleanup, no limits"
     $CCACHE -C >/dev/null
@@ -2040,6 +2041,7 @@ cleanup_suite() {
     checkfilecount 10 '*.d' $CCACHE_DIR
     checkfilecount 10 '*.stderr' $CCACHE_DIR
     checkstat 'files in cache' 30
+    checkstat 'cleanups performed' 0
 
     testname="forced cleanup, file limit"
     $CCACHE -C >/dev/null
@@ -2052,6 +2054,7 @@ cleanup_suite() {
     checkfilecount 7 '*.d' $CCACHE_DIR
     checkfilecount 7 '*.stderr' $CCACHE_DIR
     checkstat 'files in cache' 21
+    checkstat 'cleanups performed' 1
     for i in 0 1 2 3 4 5 9; do
         file=$CCACHE_DIR/a/result$i-4017.o
         if [ ! -f $file ]; then
@@ -2081,6 +2084,7 @@ cleanup_suite() {
     checkfilecount 3 '*.d' $CCACHE_DIR
     checkfilecount 3 '*.stderr' $CCACHE_DIR
     checkstat 'files in cache' 9
+    checkstat 'cleanups performed' 1
     for i in 3 4 5; do
         file=$CCACHE_DIR/a/result$i-4017.o
         if [ ! -f $file ]; then
@@ -2112,6 +2116,7 @@ cleanup_suite() {
     checkfilecount 156 '*.d' $CCACHE_DIR
     checkfilecount 156 '*.stderr' $CCACHE_DIR
     checkstat 'files in cache' 469
+    checkstat 'cleanups performed' 1
 
     testname="sibling cleanup"
     $CCACHE -C >/dev/null