From 2cfef0b042561ec2a61cab0a1f3a85a28780985d Mon Sep 17 00:00:00 2001 From: Florian Weimer Date: Wed, 21 Apr 2021 19:49:50 +0200 Subject: nptl: Move __nptl_deallocate_tsd into libc This prepares moving pthread_exit, and later the pthread_key_create infrastructure. Reviewed-by: Adhemerval Zanella --- nptl/pthread_create.c | 94 --------------------------------------------------- 1 file changed, 94 deletions(-) (limited to 'nptl/pthread_create.c') diff --git a/nptl/pthread_create.c b/nptl/pthread_create.c index c1c5b24..7fc8c7a 100644 --- a/nptl/pthread_create.c +++ b/nptl/pthread_create.c @@ -250,100 +250,6 @@ __find_in_stack_list (struct pthread *pd) } -/* Deallocate POSIX thread-local-storage. */ -void -attribute_hidden -__nptl_deallocate_tsd (void) -{ - struct pthread *self = THREAD_SELF; - - /* Maybe no data was ever allocated. This happens often so we have - a flag for this. */ - if (THREAD_GETMEM (self, specific_used)) - { - size_t round; - size_t cnt; - - round = 0; - do - { - size_t idx; - - /* So far no new nonzero data entry. */ - THREAD_SETMEM (self, specific_used, false); - - for (cnt = idx = 0; cnt < PTHREAD_KEY_1STLEVEL_SIZE; ++cnt) - { - struct pthread_key_data *level2; - - level2 = THREAD_GETMEM_NC (self, specific, cnt); - - if (level2 != NULL) - { - size_t inner; - - for (inner = 0; inner < PTHREAD_KEY_2NDLEVEL_SIZE; - ++inner, ++idx) - { - void *data = level2[inner].data; - - if (data != NULL) - { - /* Always clear the data. */ - level2[inner].data = NULL; - - /* Make sure the data corresponds to a valid - key. This test fails if the key was - deallocated and also if it was - re-allocated. It is the user's - responsibility to free the memory in this - case. */ - if (level2[inner].seq - == __pthread_keys[idx].seq - /* It is not necessary to register a destructor - function. */ - && __pthread_keys[idx].destr != NULL) - /* Call the user-provided destructor. */ - __pthread_keys[idx].destr (data); - } - } - } - else - idx += PTHREAD_KEY_1STLEVEL_SIZE; - } - - if (THREAD_GETMEM (self, specific_used) == 0) - /* No data has been modified. */ - goto just_free; - } - /* We only repeat the process a fixed number of times. */ - while (__builtin_expect (++round < PTHREAD_DESTRUCTOR_ITERATIONS, 0)); - - /* Just clear the memory of the first block for reuse. */ - memset (&THREAD_SELF->specific_1stblock, '\0', - sizeof (self->specific_1stblock)); - - just_free: - /* Free the memory for the other blocks. */ - for (cnt = 1; cnt < PTHREAD_KEY_1STLEVEL_SIZE; ++cnt) - { - struct pthread_key_data *level2; - - level2 = THREAD_GETMEM_NC (self, specific, cnt); - if (level2 != NULL) - { - /* The first block is allocated as part of the thread - descriptor. */ - free (level2); - THREAD_SETMEM_NC (self, specific, cnt, NULL); - } - } - - THREAD_SETMEM (self, specific_used, false); - } -} - - /* Deallocate a thread's stack after optionally making sure the thread descriptor is still valid. */ void -- cgit v1.1