diff options
Diffstat (limited to 'libc/private')
| -rw-r--r-- | libc/private/bionic_futex.h | 1 | ||||
| -rw-r--r-- | libc/private/bionic_tls.h | 4 |
2 files changed, 4 insertions, 1 deletions
diff --git a/libc/private/bionic_futex.h b/libc/private/bionic_futex.h index bfc3520..5602af7 100644 --- a/libc/private/bionic_futex.h +++ b/libc/private/bionic_futex.h @@ -28,6 +28,7 @@ #ifndef _BIONIC_FUTEX_H #define _BIONIC_FUTEX_H +#include <linux/compiler.h> /* needed for __user in non-uapi futex.h */ #include <linux/futex.h> #include <sys/cdefs.h> diff --git a/libc/private/bionic_tls.h b/libc/private/bionic_tls.h index 094c71c..ff13fdb 100644 --- a/libc/private/bionic_tls.h +++ b/libc/private/bionic_tls.h @@ -51,7 +51,9 @@ enum { TLS_SLOT_THREAD_ID, TLS_SLOT_ERRNO, - /* This slot is used when starting a new thread, before any code that needs errno runs. */ + /* This slot in the child's TLS is used to synchronize the parent and child + * during thread initialization. The child finishes with this mutex before + * running any code that can set errno, so we can reuse the errno slot. */ TLS_SLOT_START_MUTEX = TLS_SLOT_ERRNO, /* These two aren't used by bionic itself, but allow the graphics code to |