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author | Samuel Thibault <samuel.thibault@ens-lyon.org> | 2018-03-17 23:27:34 +0100 |
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committer | Samuel Thibault <samuel.thibault@ens-lyon.org> | 2018-03-17 23:29:57 +0100 |
commit | dc33bef307ad6eeb1cc4e4e230b69c6058890388 (patch) | |
tree | 94b8499e652a04871c4cb48225d85e9c5af455c9 /sysdeps/mach/hurd/fork.c | |
parent | 34e6a8694d9dd80558150f8542359b93c6c57e44 (diff) | |
download | glibc-dc33bef307ad6eeb1cc4e4e230b69c6058890388.zip glibc-dc33bef307ad6eeb1cc4e4e230b69c6058890388.tar.gz glibc-dc33bef307ad6eeb1cc4e4e230b69c6058890388.tar.bz2 |
hurd: Replace threadvars with TLS
This gets rid of a lot of kludge and gets closer to other ports.
* hurd/Makefile (headers): Remove threadvar.h.
(inline-headers): Remove threadvar.h.
* hurd/Versions (GLIBC_2.0: Remove __hurd_sigthread_stack_base,
__hurd_sigthread_stack_end, __hurd_sigthread_variables,
__hurd_threadvar_max, __hurd_errno_location.
(HURD_CTHREADS_0.3): Add pthread_getattr_np, pthread_attr_getstack.
* hurd/hurd/signal.h: Do not include <hurd/threadvar.h>.
(_hurd_self_sigstate): Use THREAD_SELF to get _hurd_sigstate.
(_HURD_SIGNAL_H_EXTERN_INLINE): Use THREAD_SELF to get _hurd_sigstate,
unless TLS is not initialized yet, in which case we do not need a
critical section yet anyway.
* hurd/hurd/threadvar.h: Include <tls.h>, do not include
<machine-sp.h>.
(__hurd_sigthread_variables, __hurd_threadvar_max): Remove variables
declarations.
(__hurd_threadvar_index): Remove enum.
(_HURD_THREADVAR_H_EXTERN_INLINE): Remove macro.
(__hurd_threadvar_location_from_sp,__hurd_threadvar_location): Remove
inlines.
(__hurd_reply_port0): New variable declaration.
(__hurd_local_reply_port): New macro.
* hurd/hurdsig.c (__hurd_sigthread_variables): Remove variable.
(interrupted_reply_port_location): Add thread_t parameter. Use it
with THREAD_TCB to access thread-local variables.
(_hurdsig_abort_rpcs): Pass ss->thread to
interrupted_reply_port_location.
(_hurd_internal_post_signal): Likewise.
(_hurdsig_init): Use presence of cthread_fork instead of
__hurd_threadvar_stack_mask to start signal thread by hand.
Remove signal thread threadvar initialization.
* hurd/hurdstartup.c: Do not include <hurd/threadvar.h>
* hurd/sigunwind.c: Include <hurd/threadvar.h>
(_hurdsig_longjmp_from_handler): Use __hurd_local_reply_port instead
of threadvar.
* sysdeps/mach/hurd/Versions (libc.GLIBC_PRIVATE): Add
__libc_lock_self0.
(ld.GLIBC_2.0): Remove __hurd_sigthread_stack_base,
__hurd_sigthread_stack_end, __hurd_sigthread_variables.
(ld.GLIBC_PRIVATE): Add __libc_lock_self0.
* sysdeps/mach/hurd/cthreads.c: Add __libc_lock_self0.
* sysdeps/mach/hurd/dl-sysdep.c (errno, __hurd_sigthread_stack_base,
__hurd_sigthread_stack_end, __hurd_sigthread_variables, threadvars,
__hurd_threadvar_stack_offset, __hurd_threadvar_stack_mask): Do not
define variables.
* sysdeps/mach/hurd/errno-loc.c: Do not include <errno.h> and
<hurd/threadvar.h>.
[IS_IN(rtld)] (rtld_errno): New variable.
[IS_IN(rtld)] (__errno_location): New weak function.
[!IS_IN(rtld)]: Include "../../../csu/errno-loc.c".
* sysdeps/mach/hurd/errno.c: Remove file.
* sysdeps/mach/hurd/fork.c: Include <hurd/threadvar.h>
(__fork): Remove THREADVAR_SPACE macro and its use.
* sysdeps/mach/hurd/i386/init-first.c (__hurd_threadvar_max): Remove
variable.
(init): Do not initialize threadvar.
* sysdeps/mach/hurd/i386/libc.abilist (__hurd_threadvar_max): Remove
symbol.
* sysdeps/mach/hurd/i386/sigreturn.c (__sigreturn): Use
__hurd_local_reply_port instead of threadvar.
* sysdeps/mach/hurd/i386/tls.h (tcbhead_t): Add reply_port and
_hurd_sigstate fields.
(HURD_DESC_TLS, __LIBC_NO_TLS, THREAD_TCB): New macro.
* sysdeps/mach/hurd/i386/trampoline.c: Remove outdated comment.
* sysdeps/mach/hurd/libc-lock.h: Do not include <hurd/threadvar.h>.
(__libc_lock_owner_self): Use &__libc_lock_self0 and THREAD_SELF
instead of threadvar.
* sysdeps/mach/hurd/libc-tsd.h: Remove file.
* sysdeps/mach/hurd/mig-reply.c (GETPORT, reply_port): Remove macros.
(use_threadvar, global_reply_port): Remove variables.
(__hurd_reply_port0): New variable.
(__mig_get_reply_port): Use __hurd_local_reply_port and
__hurd_reply_port0 instead of threadvar.
(__mig_dealloc_reply_port): Likewise.
(__mig_init): Do not initialize threadvar.
* sysdeps/mach/hurd/profil.c: Fix comment.
Diffstat (limited to 'sysdeps/mach/hurd/fork.c')
-rw-r--r-- | sysdeps/mach/hurd/fork.c | 7 |
1 files changed, 3 insertions, 4 deletions
diff --git a/sysdeps/mach/hurd/fork.c b/sysdeps/mach/hurd/fork.c index cc322eb..2d1e64c 100644 --- a/sysdeps/mach/hurd/fork.c +++ b/sysdeps/mach/hurd/fork.c @@ -19,6 +19,7 @@ #include <unistd.h> #include <hurd.h> #include <hurd/signal.h> +#include <hurd/threadvar.h> #include <setjmp.h> #include <thread_state.h> #include <sysdep.h> /* For stack growth direction. */ @@ -483,19 +484,17 @@ __fork (void) (natural_t *) &state, &statecount)) LOSE; #ifdef STACK_GROWTH_UP -#define THREADVAR_SPACE (__hurd_threadvar_max \ - * sizeof *__hurd_sightread_variables) if (__hurd_sigthread_stack_base == 0) { state.SP &= __hurd_threadvar_stack_mask; - state.SP += __hurd_threadvar_stack_offset + THREADVAR_SPACE; + state.SP += __hurd_threadvar_stack_offset; } else state.SP = __hurd_sigthread_stack_base; #else if (__hurd_sigthread_stack_end == 0) { - /* The signal thread has a normal stack assigned by cthreads. + /* The signal thread has a stack assigned by cthreads. The threadvar_stack variables conveniently tell us how to get to the highest address in the stack, just below the per-thread variables. */ |