net: carve response buffers from read buffers

balancing start arguments for memory limits on read vs response buffers
is hard. with this change there's a custom sub-allocator that cuts the
small response objects out of larger read objects.

it is somewhat complicated and has a few loops. the allocation path is
short circuited as much as possible.

1 files changed, 3 insertions, 0 deletions

diff --git a/sizes.c b/sizes.c
index 4fb5388..459eea7 100644
--- a/sizes.c
+++ b/sizes.c
@@ -22,6 +22,9 @@ int main(int argc, char **argv) {
     display("Libevent thread",
             sizeof(LIBEVENT_THREAD) - sizeof(struct thread_stats));
     display("Connection", sizeof(conn));
+    display("Response object", sizeof(mc_resp));
+    display("Response bundle", sizeof(mc_resp_bundle));
+    display("Response objects per bundle", MAX_RESP_PER_BUNDLE);
 
     printf("----------------------------------------\n");