Fix last COW INFO report, Skip test on non-linux platforms (#8301)

- the last COW report wasn't always read from the pipe
  (receiveLastChildInfo wasn't used)
- but in fact, there's no reason we won't always try to drain that pipe
  so i'm unifying receiveLastChildInfo with receiveChildInfo
- adjust threshold of the COW test when run in accurate mode
- add some prints in case this test fails again
- fix indentation, page size, and PID! in MacOS proc info

p.s. it seems that pri_pages_dirtied is always 0

1 files changed, 2 insertions, 14 deletions

diff --git a/src/childinfo.c b/src/childinfo.c
index 85adfe2f6..cae73fe46 100644
--- a/src/childinfo.c
+++ b/src/childinfo.c
@@ -127,21 +127,9 @@ void receiveChildInfo(void) {
     int process_type;
     int on_exit;
     size_t cow_size;
-    if (readChildInfo(&process_type, &on_exit, &cow_size)) {
-        updateChildInfo(process_type, on_exit, cow_size);
-    }
-}
-
-/* Receive last COW data from child. */
-void receiveLastChildInfo(void) {
-    if (server.child_info_pipe[0] == -1) return;
-
-    /* Drain the pipe and update child info */
-    int process_type;
-    int on_exit;
-    size_t cow_size;
 
-    while (readChildInfo(&process_type, &on_exit, &cow_size) > 0) {
+    /* Drain the pipe and update child info so that we get the final message. */
+    while (readChildInfo(&process_type, &on_exit, &cow_size)) {
         updateChildInfo(process_type, on_exit, cow_size);
     }
 }