From 8431d7972fd9be0fdcaff8516316d748e81724bb Mon Sep 17 00:00:00 2001 From: Rich Felker Date: Thu, 4 Oct 2012 16:35:46 -0400 Subject: TLS (GNU/C11 thread-local storage) support for static-linked programs the design for TLS in dynamic-linked programs is mostly complete too, but I have not yet implemented it. cost is nonzero but still low for programs which do not use TLS and/or do not use threads (a few hundred bytes of new code, plus dependency on memcpy). i believe it can be made smaller at some point by merging __init_tls and __init_security into __libc_start_main and avoiding duplicate auxv-parsing code. at the same time, I've also slightly changed the logic pthread_create uses to allocate guard pages to ensure that guard pages are not counted towards commit charge. --- src/internal/libc.h | 1 + 1 file changed, 1 insertion(+) (limited to 'src/internal') diff --git a/src/internal/libc.h b/src/internal/libc.h index ea863d67..ca06f319 100644 --- a/src/internal/libc.h +++ b/src/internal/libc.h @@ -16,6 +16,7 @@ struct __libc { int canceldisable; FILE *ofl_head; int ofl_lock[2]; + volatile size_t tls_size, tls_cnt; }; extern size_t __hwcap; -- cgit v1.2.1