mwrap user+dev discussion/patches/pulls/bugs/help
 help / color / mirror / code / Atom feed
* [PATCH] remove "memalign:" MWRAP option
@ 2018-08-10  7:08 Eric Wong
  2018-08-10  7:10 ` [PATCH v2] " Eric Wong
  0 siblings, 1 reply; 2+ messages in thread
From: Eric Wong @ 2018-08-10  7:08 UTC (permalink / raw)
  To: mwrap-public

Since we learned to treat heap_page_body allocations specially,
we can also keep track of rare memalign allocations done outside
of the Ruby GC this way.
---
 ext/mwrap/mwrap.c | 16 +---------------
 1 file changed, 1 insertion(+), 15 deletions(-)

diff --git a/ext/mwrap/mwrap.c b/ext/mwrap/mwrap.c
index 29cfc11..c44ea89 100644
--- a/ext/mwrap/mwrap.c
+++ b/ext/mwrap/mwrap.c
@@ -23,7 +23,6 @@
 #include "jhash.h"
 
 static ID id_uminus;
-static unsigned int track_memalign;
 const char *rb_source_location_cstr(int *line); /* requires 2.6.0dev */
 extern int __attribute__((weak)) ruby_thread_has_gvl_p(void);
 extern void * __attribute__((weak)) ruby_current_execution_context_ptr;
@@ -152,10 +151,6 @@ __attribute__((constructor)) static void resolve_malloc(void)
 		fprintf(stderr, "pthread_atfork failed: %s\n", strerror(err));
 	page_size = sysconf(_SC_PAGESIZE);
 	opt = getenv("MWRAP");
-	if (opt && (opt = strstr(opt, "memalign:"))) {
-		if (!sscanf(opt, "memalign:%u", &track_memalign))
-			fprintf(stderr, "not an unsigned int: %s\n", opt);
-	}
 	--locating;
 }
 
@@ -575,10 +570,8 @@ internal_memalign(void **pp, size_t alignment, size_t size, uintptr_t caller)
 	if (alignment == HEAP_PAGE_ALIGN && size == HEAP_PAGE_SIZE) {
 		if (has_ec_p()) generation = rb_gc_count();
 		l = IS_HEAP_PAGE_BODY;
-	} else if (track_memalign) {
-		l = update_stats_rcu_lock(size, caller);
 	} else {
-		l = 0;
+		l = update_stats_rcu_lock(size, caller);
 	}
 
 	if (l == IS_HEAP_PAGE_BODY) {
@@ -1285,16 +1278,9 @@ static VALUE hpb_stat(int argc, VALUE *argv, VALUE hpb)
  * * dump_fd: a writable FD to dump to
  * * dump_path: a path to dump to, the file is opened in O_APPEND mode
  * * dump_min: the minimum allocation size (total) to dump
- * * memalign: use `1' to enable tracking the memalign family
  *
  * If both `dump_fd' and `dump_path' are specified, dump_path takes
  * precedence.
- *
- * Tracking the memalign family of functions is misleading for Ruby
- * applications, as heap page allocations can happen anywhere a
- * Ruby object is allocated, even in the coldest code paths.
- * Furthermore, it is rarely-used outside of the Ruby object allocator.
- * Thus tracking memalign functions is disabled by default.
  */
 void Init_mwrap(void)
 {
-- 
EW


^ permalink raw reply related	[flat|nested] 2+ messages in thread

end of thread, other threads:[~2018-08-10  7:10 UTC | newest]

Thread overview: 2+ messages (download: mbox.gz / follow: Atom feed)
-- links below jump to the message on this page --
2018-08-10  7:08 [PATCH] remove "memalign:" MWRAP option Eric Wong
2018-08-10  7:10 ` [PATCH v2] " Eric Wong

Code repositories for project(s) associated with this public inbox

	https://80x24.org/mwrap.git/

This is a public inbox, see mirroring instructions
for how to clone and mirror all data and code used for this inbox;
as well as URLs for read-only IMAP folder(s) and NNTP newsgroup(s).