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sortix--sortix/libpthread/pthread_exit.c++
Jonas 'Sortie' Termansen 30cd318c17 Implement signals.
Note: This is an incompatible ABI change.
2014-07-22 13:25:39 +02:00

81 lines
2.4 KiB
C++

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