717bb04cb7
Refer to issue #8867 for details and rational. Convert sigset_t to an array type so that more than 32 signals can be supported. Why not use a uin64_t? - Using a uin32_t is more flexible if we decide to increase the number of signals beyound 64. - 64-bit accesses are not atomic, at least not on 32-bit ARMv7-M and similar - Keeping the base type as uint32_t does not introduce additional overhead due to padding to achieve 64-bit alignment of uin64_t - Some architectures still supported by NuttX do not support uin64_t types, Increased the number of signals to 64. This matches Linux. This will support all xsignals defined by Linux and also 32 real time signals (also like Linux). This is is a work in progress; a draft PR that you are encouraged to comment on.
109 lines
3.2 KiB
C
109 lines
3.2 KiB
C
/****************************************************************************
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* sched/pthread/pthread_exit.c
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*
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* Licensed to the Apache Software Foundation (ASF) under one or more
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* contributor license agreements. See the NOTICE file distributed with
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* this work for additional information regarding copyright ownership. The
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* ASF licenses this file to you under the Apache License, Version 2.0 (the
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* "License"); you may not use this file except in compliance with the
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* License. You may obtain a copy of the License at
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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
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* WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the
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* License for the specific language governing permissions and limitations
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* under the License.
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*
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****************************************************************************/
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/****************************************************************************
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* Included Files
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****************************************************************************/
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#include <nuttx/config.h>
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#include <stdint.h>
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#include <stdlib.h>
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#include <unistd.h>
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#include <signal.h>
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#include <pthread.h>
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#include <assert.h>
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#include <errno.h>
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#include <debug.h>
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#include <nuttx/arch.h>
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#include <nuttx/signal.h>
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#include "sched/sched.h"
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#include "task/task.h"
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#include "pthread/pthread.h"
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/****************************************************************************
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* Public Functions
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****************************************************************************/
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/****************************************************************************
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* Name: pthread_exit
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*
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* Description:
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* Terminate execution of a thread started with pthread_create.
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*
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* Input Parameters:
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* exit_value
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*
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* Returned Value:
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* None
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*
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* Assumptions:
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*
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****************************************************************************/
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void nx_pthread_exit(FAR void *exit_value)
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{
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FAR struct tcb_s *tcb = this_task();
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sigset_t set;
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int status;
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sinfo("exit_value=%p\n", exit_value);
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DEBUGASSERT(tcb != NULL);
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DEBUGASSERT((tcb->flags & TCB_FLAG_TTYPE_MASK) == TCB_FLAG_TTYPE_PTHREAD);
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/* Block any signal actions that would awaken us while were
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* are performing the JOIN handshake.
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*/
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sigfillset(&set);
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nxsig_procmask(SIG_SETMASK, &set, NULL);
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/* Complete pending join operations */
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status = pthread_completejoin(nxsched_gettid(), exit_value);
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if (status != OK)
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{
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/* Assume that the join completion failured because this
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* not really a pthread. Exit by calling exit().
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*/
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_exit(EXIT_FAILURE);
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}
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/* Perform common task termination logic. This will get called again later
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* through logic kicked off by up_exit().
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*
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* REVISIT: Tt should not be necessary to call this here, but releasing the
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* task group (especially the group file list) requires that it is done
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* here.
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*
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* The reason? up_exit removes the current process from the ready-to-run
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* list and trying to execute code that depends on this_task() crashes at
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* once, or does something very naughty.
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*/
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nxtask_exithook(tcb, status);
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up_exit(EXIT_SUCCESS);
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}
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