diff options
| author | Roland McGrath <roland@gnu.org> | 2003-03-14 22:34:02 +0000 |
|---|---|---|
| committer | Roland McGrath <roland@gnu.org> | 2003-03-14 22:34:02 +0000 |
| commit | 55c11fbdb046ec06fb9f9bca2ae772a413354c74 (patch) | |
| tree | 30c4b798aab9a3c4dded8a7332367f229d91f8a0 /nptl/descr.h | |
| parent | 0eb18281696aa6c39d906cba552ce5438134b4e7 (diff) | |
| download | glibc-55c11fbdb046ec06fb9f9bca2ae772a413354c74.tar.gz | |
2003-03-14 Roland McGrath <roland@redhat.com>
* descr.h (struct pthread): Move the union out of [!TLS_DTV_AT_TP], so
we always define the padding space.
[!TLS_DTV_AT_TP]: Give tcbhead_t field a name, `header', since GCC
stopped supporting its own extensions fully.
[TLS_MULTIPLE_THREADS_IN_TCB]: Put `multiple_threads' inside a wrapper
struct also called `header', so `header.multiple_threads' is the field
name to use on all machines.
* allocatestack.c (allocate_stack): Use `header.' prefix.
* sysdeps/pthread/createthread.c (create_thread): Likewise.
* pthread_create.c (__pthread_create_2_1): Likewise.
* sysdeps/i386/tls.h (INSTALL_NEW_DTV, THREAD_DTV): Likewise.
(THREAD_SELF): Likewise.
* sysdeps/x86_64/tls.h: Likewise.
* sysdeps/unix/sysv/linux/i386/sysdep-cancel.h
(SINGLE_THREAD_P): Likewise.
* sysdeps/unix/sysv/linux/sh/sysdep-cancel.h
(SINGLE_THREAD_P): Likewise.
* sysdeps/unix/sysv/linux/s390/s390-64/sysdep-cancel.h
(SINGLE_THREAD_P): Likewise.
Diffstat (limited to 'nptl/descr.h')
| -rw-r--r-- | nptl/descr.h | 20 |
1 files changed, 14 insertions, 6 deletions
diff --git a/nptl/descr.h b/nptl/descr.h index cbaa38fc3c..5a4c99c42f 100644 --- a/nptl/descr.h +++ b/nptl/descr.h @@ -57,17 +57,25 @@ /* Thread descriptor data structure. */ struct pthread { -#if !TLS_DTV_AT_TP - /* This overlaps tcbhead_t (see tls.h), as used for TLS without threads. */ union { - tcbhead_t; - void *__padding[16]; - }; +#if !TLS_DTV_AT_TP + /* This overlaps the TCB as used for TLS without threads (see tls.h). */ + tcbhead_t header; #elif TLS_MULTIPLE_THREADS_IN_TCB - int multiple_threads; + struct + { + int multiple_threads; + } header; #endif + /* This extra padding has no special purpose, and this structure layout + is private and subject to change without affecting the official ABI. + We just have it here in case it might be convenient for some + implementation-specific instrumentation hack or suchlike. */ + void *__padding[16]; + }; + /* This descriptor's link on the `stack_used' or `__stack_user' list. */ list_t list; |