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81 lines
2.4 KiB
C++
81 lines
2.4 KiB
C++
/*******************************************************************************
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Copyright(C) Jonas 'Sortie' Termansen 2013, 2014.
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This file is part of Sortix libpthread.
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Sortix libpthread is free software: you can redistribute it and/or modify it
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under the terms of the GNU Lesser General Public License as published by the
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Free Software Foundation, either version 3 of the License, or (at your
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option) any later version.
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Sortix libpthread is distributed in the hope that it will be useful, but
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WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY
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or FITNESS FOR A PARTICULAR PURPOSE. See the GNU Lesser General Public
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License for more details.
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You should have received a copy of the GNU Lesser General Public License
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along with Sortix libpthread. If not, see <http://www.gnu.org/licenses/>.
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pthread_exit.c++
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Exits the current thread.
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*******************************************************************************/
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#include <sys/mman.h>
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#include <pthread.h>
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#include <stdlib.h>
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#include <string.h>
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#include <unistd.h>
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extern "C"
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__attribute__((__noreturn__))
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void pthread_exit(void* return_value)
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{
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struct pthread* thread = pthread_self();
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pthread_mutex_lock(&__pthread_keys_lock);
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bool keys_left = true;
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while ( keys_left )
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{
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keys_left = false;
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for ( pthread_key_t key = 0; key < thread->keys_length; key++ )
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{
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void* key_value = thread->keys[key];
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if ( !key_value )
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continue;
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thread->keys[key] = NULL;
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if ( __pthread_keys[key].destructor )
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__pthread_keys[key].destructor(key_value);
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keys_left = true;
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}
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}
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free(thread->keys);
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thread->keys = NULL;
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thread->keys_length = 0;
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pthread_mutex_unlock(&__pthread_keys_lock);
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pthread_mutex_lock(&thread->detach_lock);
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thread->exit_result = return_value;
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int exit_flags = EXIT_THREAD_UNMAP;
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struct exit_thread extended;
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memset(&extended, 0, sizeof(extended));
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extended.unmap_from = thread->uthread.stack_mmap;
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extended.unmap_size = thread->uthread.stack_size;
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if ( thread->detach_state == PTHREAD_CREATE_JOINABLE )
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{
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extended.zero_from = &thread->join_lock.lock;
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extended.zero_size = sizeof(thread->join_lock.lock);
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exit_flags |= EXIT_THREAD_ZERO;
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}
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else
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{
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extended.tls_unmap_from = thread->uthread.tls_mmap;
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extended.tls_unmap_size = thread->uthread.tls_size;
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exit_flags |= EXIT_THREAD_TLS_UNMAP;
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}
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exit_thread(0, EXIT_THREAD_ONLY_IF_OTHERS | exit_flags, &extended);
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exit(0);
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}
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