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| author | Rich Felker <dalias@aerifal.cx> | 2012-10-04 16:35:46 -0400 |
|---|---|---|
| committer | Rich Felker <dalias@aerifal.cx> | 2012-10-04 16:35:46 -0400 |
| commit | 8431d7972fd9be0fdcaff8516316d748e81724bb (patch) | |
| tree | 53800c9deeaf26a9fedc5f9f574d9694315b510c /src/internal/libc.h | |
| parent | adefe830dd376be386df5650a09c313c483adf1a (diff) | |
| download | musl-8431d7972fd9be0fdcaff8516316d748e81724bb.tar.gz | |
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.
Diffstat (limited to 'src/internal/libc.h')
| -rw-r--r-- | src/internal/libc.h | 1 |
1 files changed, 1 insertions, 0 deletions
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; |