From b92bea5d2a9481de69bb627a7b442a9f58fca43d Mon Sep 17 00:00:00 2001 From: Zbigniew Jędrzejewski-Szmek Date: Sun, 24 Mar 2013 19:59:00 -0400 Subject: Use initalization instead of explicit zeroing MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit Before, we would initialize many fields twice: first by filling the structure with zeros, and then a second time with the real values. We can let the compiler do the job for us, avoiding one copy. A downside of this patch is that text gets slightly bigger. This is because all zero() calls are effectively inlined: $ size build/.libs/systemd text data bss dec hex filename before 897737 107300 2560 1007597 f5fed build/.libs/systemd after 897873 107300 2560 1007733 f6075 build/.libs/systemd … actually less than 1‰. A few asserts that the parameter is not null had to be removed. I don't think this changes much, because first, it is quite unlikely for the assert to fail, and second, an immediate SEGV is almost as good as an assert. --- src/core/service.c | 4 +--- 1 file changed, 1 insertion(+), 3 deletions(-) (limited to 'src/core/service.c') diff --git a/src/core/service.c b/src/core/service.c index 98266a5a90..a104b300c3 100644 --- a/src/core/service.c +++ b/src/core/service.c @@ -3446,7 +3446,7 @@ static int service_enumerate(Manager *m) { unsigned i; DIR _cleanup_closedir_ *d = NULL; char _cleanup_free_ *path = NULL, *fpath = NULL, *name = NULL; - Set *runlevel_services[ELEMENTSOF(rcnd_table)]; + Set *runlevel_services[ELEMENTSOF(rcnd_table)] = {}; Set _cleanup_set_free_ *shutdown_services = NULL; Unit *service; Iterator j; @@ -3457,8 +3457,6 @@ static int service_enumerate(Manager *m) { if (m->running_as != SYSTEMD_SYSTEM) return 0; - zero(runlevel_services); - STRV_FOREACH(p, m->lookup_paths.sysvrcnd_path) for (i = 0; i < ELEMENTSOF(rcnd_table); i ++) { struct dirent *de; -- cgit v1.2.3-54-g00ecf