aboutsummaryrefslogtreecommitdiff
path: root/nptl/pthread_create.c
AgeCommit message (Collapse)AuthorFilesLines
2004-03-31Update.Ulrich Drepper1-4/+4
2004-03-30 Ulrich Drepper <drepper@redhat.com> * sysdeps/generic/libc-start.c (LIBC_START_MAIN) [HAVE_CLEANUP_JMP_BUF]: Call __nptl_deallocate_tsd.
2004-02-27Update.Ulrich Drepper1-15/+42
* pthread_attr_setschedparam.c: Don't test priority against limits here. Set ATTR_FLAG_SCHED_SET flag. * pthread_attr_setschedpolicy.c: Set ATTR_FLAG_POLICY_SET flag. * pthread_create.c (__pthread_create_2_1): Copy scheduling attributes from parent thread to child. If attribute is used and scheduling parameters are not inherited, copy parameters from attribute or compute them. Check priority value. * pthread_getschedparam.c: If the parameters aren't known yet get them from the kernel. * pthread_setschedparam.c: Set ATTR_FLAG_SCHED_SET and ATTR_FLAG_POLICY_SET flag for thread. * sysdeps/unix/sysv/linux/internaltypes.h: Define ATTR_FLAG_SCHED_SET and ATTR_FLAG_POLICY_SET. * sysdeps/pthread/createthread.c: Use tgkill if possible.
2003-09-09* sysdeps/unix/sysv/linux/speed.cRoland McGrath1-3/+4
(cfsetospeed): Only set c_ospeed under [_HAVE_STRUCT_TERMIOS_C_OSPEED]. (cfsetispeed): Only set c_ispeed under [_HAVE_STRUCT_TERMIOS_C_ISPEED]. * sysdeps/unix/sysv/linux/bits/termios.h (_HAVE_STRUCT_TERMIOS_C_ISPEED, _HAVE_STRUCT_TERMIOS_C_OSPEED): Define. * sysdeps/unix/sysv/linux/alpha/bits/termios.h: Likewise. * sysdeps/unix/sysv/linux/powerpc/bits/termios.h: Likewise.
2003-08-07(__pthread_create_2_0): Clear new_attr.cpuset.Jakub Jelinek1-0/+1
2003-08-03Update.Ulrich Drepper1-19/+7
* sysdeps/pthread/createthread.c (do_clone): If __ASSUME_CLONE_STOPPED is not defined, do explicit synchronization. (create_thread): Do not lock pd->lock here. If __ASSUME_CLONE_STOPPED is not defined also unlock pd->lock for non-debugging case in case it is necessary. * pthread_create.c (start_thread): Always get and release pd->lock if __ASSUME_CLONE_STOPPED is not defined. (start_thread_debug): Removed. Adjust users. * allocatestack.c (allocate_stack): Always initialize lock if __ASSUME_CLONE_STOPPED is not defined. * Makefile (tests): Add tst-sched1. * tst-sched1.c: New file.
2003-07-22Update.Ulrich Drepper1-0/+4
2003-07-22 Jakub Jelinek <jakub@redhat.com> * include/resolv.h (__resp): Declare. Define to __libc_resp if in libc.so. (_res): If USE___THREAD, define to (*__resp). * resolv/res_libc.c (_res): Normal .bss variable with compat_symbol even if USE___THREAD. (__resp): New __thread variable. (__libc_resp): New alias. * resolv/Versions (libc): Export _res@GLIBC_2.0 even if USE_TLS && HAVE___THREAD. Export __resp@@GLIBC_PRIVATE. * sysdeps/generic/res-state.c (__res_state): Return __resp if USE___THREAD.
2003-07-20Update.Ulrich Drepper1-1/+1
2003-07-20 Ulrich Drepper <drepper@redhat.com> * Makefile (libpthread-routines): Add pthread_attr_getaffinity and pthread_attr_setaffinity. * Versions [libpthread] (GLIBC_2.3.3): Likewise. * sysdeps/unix/sysv/linux/pthread_attr_getaffinity.c: New file. * sysdeps/unix/sysv/linux/pthread_attr_setaffinity.c: New file. * pthread_attr_destroy.c: Free cpuset element if allocated. * pthread_create.c: Pass iattr as additional parameter to create_thread. * sysdeps/pthread/createthread.c: If attribute is provided and a new thread is created with affinity set or scheduling parameters, start thread with CLONE_STOPPED. * sysdeps/pthread/pthread.h: Declare pthread_attr_getaffinity and pthread_attr_setaffinity. * sysdeps/unix/sysv/linux/internaltypes.h (struct pthread_attr): Add cpuset element.
2003-04-12(deallocate_tsd): Don't take parameter. Adjust caller. Optimize to avoid ↵Ulrich Drepper1-22/+43
often unecessary local variable. (start_thread): Initialize cleanup_jmp_buf element if own thread descriptor.
2003-04-02Update.Ulrich Drepper1-53/+64
2003-04-01 Ulrich Drepper <drepper@redhat.com> * pthread_create.c (deallocate_tsd): Clear/free memory after the last round, not the first. Use specific_used flag instead of local found_nonzero variable. Use THREAD_[SG]ETMEM where possible. (__free_tcb): Don't call deallocate_tsd here. (start_thread): Call deallocate_tsd here. * pthread_setspecific.c: Set specific_used flag really only when needed. * Makefile (tests): Add tst-tsd3.c * tst-tsd3.c: New file.
2003-03-27Update.Ulrich Drepper1-1/+2
* pthread_create.c (start_thread): Don't use setjmp inside __builtin_expect to work around gcc bug.
2003-03-21Update.Ulrich Drepper1-2/+2
2003-03-21 Ulrich Drepper <drepper@redhat.com> * cancellation.c: Adjust for new form of compare&exchange macros. * cleanup_defer.c: Likewise. * init.c: Likewise. * libc-cancellation.c: Likewise. * old_pthread_cond_broadcast.c: Likewise. * old_pthread_cond_signal.c: Likewise. * old_pthread_cond_timedwait.c: Likewise. * old_pthread_cond_wait.c: Likewise. * pthread_cancel.c: Likewise. * pthread_create.c: Likewise. * pthread_detach.c: Likewise. * pthread_join.c: Likewise. * pthread_key_delete.c: Likewise. * pthread_setcancelstate.c: Likewise. * pthread_setcanceltype.c: Likewise. * pthread_timedjoin.c: Likewise. * pthread_tryjoin.c: Likewise. * sysdeps/pthread/createthread.c: Likewise.
2003-03-14(start_thread): Use CALL_THREAD_FCT if defined.Ulrich Drepper1-0/+4
2003-03-14* allocatestack.c (__stack_user): Use hidden_data_def.Roland McGrath1-1/+1
* pthread_create.c (__pthread_keys): Likewise. * init.c [__powerpc__] (__NR_set_tid_address): Define it. * tst-fork4.c: New file. * Makefile (tests): Add it.
2003-03-142003-03-14 Roland McGrath <roland@redhat.com>Roland McGrath1-2/+2
* 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.
2003-03-14Update.Ulrich Drepper1-1/+1
2003-03-14 Ulrich Drepper <drepper@redhat.com> * localedata/mn_MN: New file. Contributed by Sanlig Badral <badral@chinggis.com>.
2003-03-13* elf/Makefile ($(objpfx)librtld.mk): Tweak regexp so that one-lineRoland McGrath1-3/+4
entries in the map file match too.
2003-03-112003-03-11 Jakub Jelinek <jakub@redhat.com>Roland McGrath1-1/+1
* sysdeps/pthread/createthread.c (ARCH_CLONE): Define if not defined. (create_thread): Only assert PD->tcb != NULL under [TLS_TCB_AT_TP]. Use ARCH_CLONE. * allocatestack.c (ALLOCATE_STACK_PARMS): New macro. [NEED_SEPARATE_REGISTER_STACK] (STACK_VARIABLES, STACK_VARIABLES_ARGS, STACK_VARIABLES_PARMS, ALLOCATE_STACK_PARMS, ALLOCATE_STACK): New macros. (TLS_TPADJ): New macro. (get_cached_stack, queue_stack, __deallocate_stack): Use TLS_TPADJ. (allocate_stack): Handle TLS_DTV_AT_TP and NEED_SEPARATE_REGISTER_STACK. Use TLS_TPADJ. * pthread_create.c (__pthread_create_2_1) [! TLS_TCB_AT_TP]: Don't set PD->self. * init.c [__ia64__] (__NR_set_tid_address): Define.
2003-03-102003-03-10 Roland McGrath <roland@redhat.com>Roland McGrath1-5/+5
* allocatestack.c (allocate_stack) [!TLS_MULTIPLE_THREADS_IN_TCB]: Instead of setting PD->multiple_threads, set globals __pthread_multiple_threads and __libc_multiple_threads. * sysdeps/pthread/createthread.c (create_thread): Likewise. * sysdeps/i386/tls.h (TLS_MULTIPLE_THREADS_IN_TCB): Define it. * sysdeps/s390/tls.h (TLS_MULTIPLE_THREADS_IN_TCB): Likewise. * descr.h (struct pthread): Conditionalize first member on [!TLS_DTV_AT_TP]. Replace the `header' member with an anonymous union containing an anonymous tcbhead_t. Move `list' member out. [TLS_MULTIPLE_THREADS_IN_TCB]: Define a `multiple_threads' member. * allocatestack.c: Remove use of `header.data.' prefix. * pthread_create.c: Likewise. * init.c (__pthread_initialize_minimal_internal): Likewise. * sysdeps/pthread/createthread.c (create_thread): Likewise. * sysdeps/i386/tls.h (INSTALL_DTV): Add parens. (THREAD_SELF, THREAD_DTV, INSTALL_NEW_DTV): No `header.data.' prefix. * 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/i386/tls.h (tcbhead_t): Remove `list' member. * sysdeps/s390/tls.h (tcbhead_t): Likewise.
2003-03-04Update.Ulrich Drepper1-2/+1
* pthread_create.c: Define __pthread_keys using nocommon attribute, not by placing it explicitly in bss. Remove DEFINE_DEALLOC definition. Not needed anymore. * allocatestack.c: Define ARCH_MAP_FLAGS if not already defined. Use it in mmap call to allocate stacks. * sysdeps/pthread/createthread.c (create_thread): Fix comment.
2003-03-04Update.Ulrich Drepper1-1/+1
* sysdeps/generic/dl-sysdep.h: Add double include protection.
2003-02-23Update.Ulrich Drepper1-3/+3
2003-02-23 Ulrich Drepper <drepper@redhat.com> * resolv/res_libc.c [USE___THREAD] (_res): Initialize _vcsock element to -1.
2003-02-222003-02-21 Roland McGrath <roland@redhat.com>Roland McGrath1-1/+3
* pthread_create.c (start_thread): Call __libc_thread_freeres.
2003-02-20Update.Ulrich Drepper1-0/+3
* pthread_create.c (deallocate_tsd): Reset found_nonzero at the beginning of the loop. Clear the entire first block of TSD.
2003-02-20Update.Ulrich Drepper1-2/+2
2003-02-20 Ulrich Drepper <drepper@redhat.com> * pthread_create.c (deallocate_tsd): Clear the entire first block of TSD. * Makefile (tests): Add tst-key4. * tst-key4.c: New file.
2003-02-18Update.Ulrich Drepper1-1/+3
* pthread_create.c (deallocate_tsd): Mark as internal_function. Add some more __builtin_expect.
2003-02-18Update.Ulrich Drepper1-2/+2
2003-02-18 Ulrich Drepper <drepper@redhat.com> * pthreadP.h: Define dummy versio of DEBUGGING_P.
2003-02-15Update.Ulrich Drepper1-0/+2
* pthreadP.h: Mark declarations of __find_in_stack_list, __free_tcb, and __deallocate_stack with internal_function. * pthread_create.c: Adjust definitions appropriately. * allocatestack.c: Likewise. * pthread_join.c: Add one more __builtin_expect. * pthread_timedjoin.c: Likewise. * pthread_getspecific.c (__pthread_getspecific): Clear data->data not data of sequence number does not match. Add one __builtin_expect.
2003-02-14Update.Ulrich Drepper1-0/+14
2003-02-14 Ulrich Drepper <drepper@redhat.com> * sysdeps/generic/libc-start.c [HAVE_PTR_NTHREADS]: Decrement thread counter and only call __exit_thread if this is not the last thread.
2003-02-03Update.Ulrich Drepper1-1/+2
2003-01-31 Steven Munroe <sjmunroe@us.ibm.com> * sysdeps/unix/sysv/linux/powerpc/powerpc64/fe_nomask.c: Include kernel-features.h * sysdeps/unix/sysv/linux/powerpc/powerpc64/getcontext.S: Likewise. * sysdeps/unix/sysv/linux/powerpc/powerpc64/makecontext.S: Likewise. * sysdeps/unix/sysv/linux/powerpc/powerpc64/setcontext.S: Likewise. * sysdeps/unix/sysv/linux/powerpc/powerpc64/swapcontext.S: Likewise.
2002-12-05* forward.c (pthread_self): Use FORWARD3 macro to correct return type.Roland McGrath1-1/+1
* sysdeps/i386/td_ta_map_lwp2thr.c: Moved from ../nptl_db. * sysdeps/generic/td_ta_map_lwp2thr.c: New file. * pthread_create.c (start_thread): Add missing & on __nptl_last_event.
2002-12-03* sysdeps/hppa/fpu/fesetround.c (fesetround): Use ~FE_DOWNWARD so bothRoland McGrath1-3/+7
bits of RM are cleared.
2002-11-26Initial revisioncvs/initialUlrich Drepper1-0/+419
2002-11-26 Ulrich Drepper <drepper@redhat.com> * allocatestack.c (queue_stack): Don't remove stack from list here. Do it in the caller. Correct condition to prematurely terminate loop to free stacks. (__deallocate_stack): Remove stack from list here. 2002-11-26 Ulrich Drepper <drepper@redhat.com> * Makefile (tests): Add tst-stack1. * tst-stack1.c: New file. * allocatestack.c (allocate_stack): Initialize the TCB on a user provided stack. * pthread_attr_getstack.c: Return bottom of the thread area. 2002-11-25 Ulrich Drepper <drepper@redhat.com> * Makefile (libpthread-routines): Add pt-allocrtsig and pthread_kill_other_threads. * pt-allocrtsig.c: New file. * pthread_kill_other_threads.c: New file. * sysdeps/unix/sysv/linux/allocrtsig.c: Add additional aliases for all three functions. * sysdeps/unix/sysv/linux/Makefile (sysdep_routines): Remove allocrtsig. * sysdeps/unix/sysv/linux/Versions (libc:GLIBC_PRIVATE): Export __libc_current_sigrtmin_private, __libc_current_sigrtmax_private, and __libc_allocate_rtsig_private. * Versions (libpthread): Export pthread_kill_other_threads_np, __libc_current_sigrtmin, and __libc_current_sigrtmax. 2002-11-24 Ulrich Drepper <drepper@redhat.com> * allocatestack.c (allocate_stack): stackaddr in attribute points to the end of the stack. Adjust computations. When mprotect call fails dequeue stack and free it. * pthread_attr_setstack.c: Store top of the stack in stackaddr attribute. * pthread_getattr_np.c: Likewise. * descr.h (IS_DETACHED): Add some more parenthesis to prevent surprises. 2002-11-23 Ulrich Drepper <drepper@redhat.com> * sysdeps/pthread/pthread.h (pthread_self): __THROW must come before attribute definitions. Patch by Luca Barbieri <ldb@ldb.ods.org>. 2002-11-22 Ulrich Drepper <drepper@redhat.com> * pthread_getspecific.c: Optimize access to first 2nd-level array. * pthread_setspecific.c: Likewise. 2002-11-21 Ulrich Drepper <drepper@redhat.com> * sysdeps/unix/sysv/linux/i386/createthread.c: Remove CLONE_ flags definitions. Get them from the official place. * sysdeps/unix/sysv/linux/i386/fork.c: Likewise. * sysdeps/unix/sysv/linux/i386/createthread.c: Update CLONE_* flags. Use new CLONE_ flags in clone() calls. * sysdeps/unix/sysv/linux/fork.c: Use ARCH_FORK to actually fork. * sysdeps/unix/sysv/linux/i386/fork.c: New file. * Versions: Add pthread_* functions for libc. * forward.c: New file. * sysdeps/pthread/Makefile (libpthread-sysdeps_routines): Add errno-loc. * herrno.c: New file. * res.c: New file. * Makefile (libpthread-routines): Remove sem_post, sem_wait, sem_trywait, and sem_timedwait. Add herrno and res. * sem_init.c: Don't initialize lock and waiters members. * sem_open.c: Likewise. * sem_post.c: Removed. * sem_wait.c: Removed. * sem_trywait.c: Removed. * sem_timedwait.c: Removed. * sysdeps/unix/sysv/linux/i386/i486/lowlevelsem.S: Complete rewrite. Includes full implementations of sem_post, sem_wait, sem_trywait, and sem_timedwait. * sysdeps/unix/sysv/linux/i386/lowlevelsem.h (lll_sem_post): Adjust for new implementation. * sysdeps/unix/sysv/linux/internaltypes.h (struct sem): Remove lock and waiters fields. * tst-sem3.c: Improve error message. * tst-signal3.c: Likewise. * init.c (__pthread_initialize_minimal): Use set_tid_address syscall to tell the kernel about the termination futex and to initialize tid member. Don't initialize main_thread. * descr.h (struct pthread): Remove main_thread member. * cancelllation.c (__do_cancel): Remove code handling main thread. The main thread is not special anymore. * allocatestack.c (__reclaim_stacks): Mark stacks as unused. Add size of the stacks to stack_cache_actsize. * pt-readv.c: Add missing "defined". * pt-sigwait.c: Likewise. * pt-writev.c: Likewise. 2002-11-09 Ulrich Drepper <drepper@redhat.com> * Versions: Export __connect from libpthread. Patch by Luca Barbieri <ldb@ldb.ods.org>. * Makefile (libpthread-routines): Add pt-raise. * sysdeps/unix/sysv/linux/raise.c: New file. * sysdeps/unix/sysv/linux/pt-raise.c: New file. * sysdeps/generic/pt-raise.c: New file. * pthread_cond_init.c: Initialize all data elements of the condvar structure. Patch by Luca Barbieri <ldb@ldb.ods.org>. * pthread_attr_init.c: Actually implement 2.0 compatibility version. * pthread_create.c: Likewise. * Makefile (tests): Add tst-key1, tst-key2, tst-key3. * tst-key1.c: New file. * tst-key2.c: New file. * tst-key3.c: New file. * Versions: Export pthread_detach for version GLIBC_2.0. Reported by Saurabh Desai <sdesai@austin.ibm.com>. 2002-11-08 Ulrich Drepper <drepper@redhat.com> * pthread_key_create.c: Terminate search after an unused key was found. Patch by Luca Barbieri <ldb@ldb.ods.org>. * sysdeps/unix/sysv/linux/i386/pthread_once.S: Return zero. Patch by Luca Barbieri <ldb@ldb.ods.org>. 2002-10-10 Ulrich Drepper <drepper@redhat.com> * sysdeps/unix/sysv/linux/i386/i486/lowlevelsem.S: Use slow generic dynamic lookup for errno in PIC. * allocatestack.c (get_cached_stack): Rearrange code slightly to release the stack lock as soon as possible. Call _dl_allocate_tls_init for TCB from the cache to re-initialize the static TLS block. (allocate_stack): Call _dl_allocate_tls_init for user-provided stack. * cancellation.c: Renamed from cancelation.c. * Makefile: Adjust accordingly. * pthreadP.h (CANCELLATION_P): Renamed from CANCELATION_P. * cleanup_defer.c: Use CANCELLATION_P. * pthread_testcancel.c: Likewise. * descr.h: Fix spelling in comments. * init.c: Likewise. * pthread_getattr_np.c: Likewise. * pthread_getschedparam.c: Likewise. * pthread_setschedparam.c: Likewise. * Versions: Likewise. * pt-pselect.c: New file. * Makefile (libpthread-routines): Add pt-pselect. * Versions: Add pselect. * tst-cancel4.c: New file. * Makefile (tests): Add tst-cancel4. 2002-10-09 Ulrich Drepper <drepper@redhat.com> * pthread_mutex_lock.c: Always record lock ownership. * pthread_mutex_timedlock.c: Likewise. * pthread_mutex_trylock.c: Likewise. * pt-readv.c: New file. * pt-writev.c: New file. * pt-creat.c: New file. * pt-msgrcv.c: New file. * pt-msgsnd.c: New file. * pt-poll.c: New file. * pt-select.c: New file. * pt-sigpause.c: New file. * pt-sigsuspend.c: New file. * pt-sigwait.c: New file. * pt-sigwaitinfo.c: New file. * pt-waitid.c: New file. * Makefile (libpthread-routines): Add pt-readv, pt-writev, pt-creat, pt-msgrcv, pt-msgsnd, pt-poll, pt-select, pt-sigpause, pt-sigsuspend, pt-sigwait, pt-sigwaitinfo, and pt-waitid. * Versions: Add all the new functions. * tst-exit1.c: New file. * Makefile (tests): Add tst-exit1. * sem_timedwait.c: Minor optimization for more optimal fastpath. 2002-10-08 Ulrich Drepper <drepper@redhat.com> * pt-fcntl.c: Only enable asynchronous cancellation for F_SETLKW. * pthread_join.c: Enable asynchronous cancellation around lll_wait_tid call. pthread_join is an official cancellation point. * pthread_timedjoin.c: Likewise. * pthread_cond_wait.c: Revert order in which internal lock are dropped and the condvar's mutex are retrieved. * pthread_cond_timedwait.c: Likewise. Reported by dice@saros.East.Sun.COM. 2002-10-07 Ulrich Drepper <drepper@redhat.com> * pthreadP.h: Cut out all type definitions and move them... * sysdeps/unix/sysv/linux/internaltypes.h: ...here. New file. * pthreadP.h: Include <internaltypes.h>. * sysdeps/unix/sysv/linux/i386/lowlevelsem.h (lll_sem_post): Little performance tweaks. * sem_trywait.c: Shuffle #includes around to get right order. * sem_timedwait.c: Likewise. * sem_post.c: Likewise. * sem_wait.c: Likewise. * nptl 0.3 released. * Makefile (tests): Add tst-signal3. * tst-signal3.c: New file. 2002-10-05 Ulrich Drepper <drepper@redhat.com> * sysdeps/unix/sysv/linux/i386/lowlevelsem.h: Tell the compiler that the asms modify the sem object. (__lll_sem_timedwait): Now takes struct sem* as first parameter. * sysdeps/unix/sysv/linux/i386/bits/semaphore.h (sem_t): Don't expose the actual members. * pthreadP.h (struct sem): New type. Actual semaphore type. * semaphoreP.h: Include pthreadP.h. * sem_getvalue.c: Adjust to sem_t change. * sem_init.c: Likewise. * sem_open.c: Likewise. * sem_post.c: Likewise. * sem_timedwait.c: Likewise. * sem_trywait.c: Likewise. * sem_wait.c: Likewise. 2002-10-04 Ulrich Drepper <drepper@redhat.com> * Makefile (tests): Add tst-basic2, tst-exec1, tst-exec3, tst-exec3. * tst-basic2.c: New file. * tst-exec1.c: New file. * tst-exec2.c: New file. * tst-exec3.c: New file. * tst-fork1.c: Remove extra */. * nptl 0.2 released. The API for IA-32 is complete.
generated by cgit v1.1 at 2024-11-25 01:55:02 +0000