diff options
Diffstat (limited to 'linuxthreads/pthread.c')
| -rw-r--r-- | linuxthreads/pthread.c | 138 |
1 files changed, 34 insertions, 104 deletions
diff --git a/linuxthreads/pthread.c b/linuxthreads/pthread.c index 9281a414c9..e2042bdb74 100644 --- a/linuxthreads/pthread.c +++ b/linuxthreads/pthread.c @@ -63,58 +63,20 @@ static pthread_descr manager_thread; /* Descriptor of the initial thread */ struct _pthread_descr_struct __pthread_initial_thread = { - { - { - .self = &__pthread_initial_thread /* pthread_descr self */ - } - }, - &__pthread_initial_thread, /* pthread_descr p_nextlive */ - &__pthread_initial_thread, /* pthread_descr p_prevlive */ - NULL, /* pthread_descr p_nextwaiting */ - NULL, /* pthread_descr p_nextlock */ - PTHREAD_THREADS_MAX, /* pthread_t p_tid */ - 0, /* int p_pid */ - 0, /* int p_priority */ - &__pthread_handles[0].h_lock, /* struct _pthread_fastlock * p_lock */ - 0, /* int p_signal */ - NULL, /* sigjmp_buf * p_signal_buf */ - NULL, /* sigjmp_buf * p_cancel_buf */ - 0, /* char p_terminated */ - 0, /* char p_detached */ - 0, /* char p_exited */ - NULL, /* void * p_retval */ - 0, /* int p_retval */ - NULL, /* pthread_descr p_joining */ - NULL, /* struct _pthread_cleanup_buffer * p_cleanup */ - 0, /* char p_cancelstate */ - 0, /* char p_canceltype */ - 0, /* char p_canceled */ - NULL, /* char * p_in_sighandler */ - 0, /* char p_sigwaiting */ - PTHREAD_START_ARGS_INITIALIZER(NULL), - /* struct pthread_start_args p_start_args */ - {NULL}, /* void ** p_specific[PTHREAD_KEY_1STLEVEL_SIZE] */ - {NULL}, /* void * p_libc_specific[_LIBC_TSD_KEY_N] */ - &_errno, /* int *p_errnop */ - 0, /* int p_errno */ - &_h_errno, /* int *p_h_errnop */ - 0, /* int p_h_errno */ - &_res, /* struct __res_state *p_resp */ - {}, /* struct __res_state p_res */ - 1, /* int p_userstack */ - NULL, /* void * p_guardaddr */ - 0, /* size_t p_guardsize */ - 0, /* Always index 0 */ - 0, /* int p_report_events */ - {{{0, }}, 0, NULL}, /* td_eventbuf_t p_eventbuf */ - __ATOMIC_INITIALIZER, /* struct pthread_atomic p_resume_count */ - 0, /* char p_woken_by_cancel */ - 0, /* char p_condvar_avail */ - 0, /* char p_sem_avail */ - NULL, /* struct pthread_extricate_if *p_extricate */ - NULL, /* pthread_readlock_info *p_readlock_list; */ - NULL, /* pthread_readlock_info *p_readlock_free; */ - 0 /* int p_untracked_readlock_count; */ + .p_header.data.self = &__pthread_initial_thread, + .p_nextlive = &__pthread_initial_thread, + .p_prevlive = &__pthread_initial_thread, + .p_tid = PTHREAD_THREADS_MAX, + .p_lock = &__pthread_handles[0].h_lock, + .p_start_args = PTHREAD_START_ARGS_INITIALIZER(NULL), +#if !(USE_TLS && HAVE___THREAD) + .p_errnop = &_errno, + .p_h_errnop = &_h_errno, + .p_resp = &_res, +#endif + .p_userstack = 1, + .p_resume_count = __ATOMIC_INITIALIZER, + .p_alloca_cutoff = __MAX_ALLOCA_CUTOFF }; /* Descriptor of the manager thread; none of this is used but the error @@ -123,58 +85,15 @@ struct _pthread_descr_struct __pthread_initial_thread = { #define manager_thread (&__pthread_manager_thread) struct _pthread_descr_struct __pthread_manager_thread = { - { - { - .self = &__pthread_manager_thread /* pthread_descr self */ - } - }, - NULL, /* pthread_descr p_nextlive */ - NULL, /* pthread_descr p_prevlive */ - NULL, /* pthread_descr p_nextwaiting */ - NULL, /* pthread_descr p_nextlock */ - 0, /* int p_tid */ - 0, /* int p_pid */ - 0, /* int p_priority */ - &__pthread_handles[1].h_lock, /* struct _pthread_fastlock * p_lock */ - 0, /* int p_signal */ - NULL, /* sigjmp_buf * p_signal_buf */ - NULL, /* sigjmp_buf * p_cancel_buf */ - 0, /* char p_terminated */ - 0, /* char p_detached */ - 0, /* char p_exited */ - NULL, /* void * p_retval */ - 0, /* int p_retval */ - NULL, /* pthread_descr p_joining */ - NULL, /* struct _pthread_cleanup_buffer * p_cleanup */ - 0, /* char p_cancelstate */ - 0, /* char p_canceltype */ - 0, /* char p_canceled */ - NULL, /* char * p_in_sighandler */ - 0, /* char p_sigwaiting */ - PTHREAD_START_ARGS_INITIALIZER(__pthread_manager), - /* struct pthread_start_args p_start_args */ - {NULL}, /* void ** p_specific[PTHREAD_KEY_1STLEVEL_SIZE] */ - {NULL}, /* void * p_libc_specific[_LIBC_TSD_KEY_N] */ - &__pthread_manager_thread.p_errno, /* int *p_errnop */ - 0, /* int p_errno */ - NULL, /* int *p_h_errnop */ - 0, /* int p_h_errno */ - NULL, /* struct __res_state *p_resp */ - {}, /* struct __res_state p_res */ - 0, /* int p_userstack */ - NULL, /* void * p_guardaddr */ - 0, /* size_t p_guardsize */ - 1, /* Always index 1 */ - 0, /* int p_report_events */ - {{{0, }}, 0, NULL}, /* td_eventbuf_t p_eventbuf */ - __ATOMIC_INITIALIZER, /* struct pthread_atomic p_resume_count */ - 0, /* char p_woken_by_cancel */ - 0, /* char p_condvar_avail */ - 0, /* char p_sem_avail */ - NULL, /* struct pthread_extricate_if *p_extricate */ - NULL, /* pthread_readlock_info *p_readlock_list; */ - NULL, /* pthread_readlock_info *p_readlock_free; */ - 0 /* int p_untracked_readlock_count; */ + .p_header.data.self = &__pthread_manager_thread, + .p_lock = &__pthread_handles[1].h_lock, + .p_start_args = PTHREAD_START_ARGS_INITIALIZER(__pthread_manager), +#if !(USE_TLS && HAVE___THREAD) + .p_errnop = &__pthread_manager_thread.p_errno, +#endif + .p_nr = 1, + .p_resume_count = __ATOMIC_INITIALIZER, + .p_alloca_cutoff = PTHREAD_STACK_MIN / 4 }; #endif @@ -418,6 +337,7 @@ __pthread_initialize_minimal(void) # if __LT_SPINLOCK_INIT != 0 self->p_resume_count = (struct pthread_atomic) __ATOMIC_INITIALIZER; # endif + self->p_alloca_cutoff = __MAX_ALLOCA_CUTOFF; /* Another variable which points to the thread descriptor. */ __pthread_main_thread = self; @@ -487,6 +407,15 @@ __pthread_init_max_stacksize(void) } #endif __pthread_max_stacksize = max_stack; + if (max_stack / 4 < __MAX_ALLOCA_CUTOFF) + { +#ifdef USE_TLS + pthread_descr self = THREAD_SELF; + self->p_alloca_cutoff = max_stack / 4; +#else + __pthread_initial_thread.p_alloca_cutoff = max_stack / 4; +#endif + } } @@ -629,6 +558,7 @@ int __pthread_initialize_manager(void) # if __LT_SPINLOCK_INIT != 0 self->p_resume_count = (struct pthread_atomic) __ATOMIC_INITIALIZER; # endif + tcb->p_alloca_cutoff = PTHREAD_STACK_MIN / 4; #else tcb = &__pthread_manager_thread; #endif |