df30a1f8d3
1. add support to join main task
| static pthread_t self;
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| static void *join_task(void *arg)
| {
| int ret;
| ret = pthread_join(self, NULL); <--- /* Fix Task could not be joined */
| return NULL;
| }
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| int main(int argc, char *argv[])
| {
| pthread_t thread;
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| self = pthread_self();
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| pthread_create(&thread, NULL, join_task, NULL);
| sleep(1);
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| pthread_exit(NULL);
| return 0;
| }
2. Detach active thread will not alloc for additional join, just update the task flag.
3. Remove the return value waiting lock logic (data_sem),
the return value will be stored in the waiting tcb.
4. Revise the return value of pthread_join(), consistent with linux
e.g:
Joining a detached and canceled thread should return EINVAL, not ESRCH
https://pubs.opengroup.org/onlinepubs/009695399/functions/pthread_join.html
[EINVAL]
The value specified by thread does not refer to a joinable thread.
NOTE:
This PR will not increase stack usage, but struct tcb_s will increase 32 bytes.
Signed-off-by: chao an <anchao@lixiang.com>
53 lines
1.7 KiB
Plaintext
53 lines
1.7 KiB
Plaintext
############################################################################
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# sched/task/Make.defs
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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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CSRCS += task_create.c task_init.c task_setup.c task_activate.c
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CSRCS += task_start.c task_delete.c task_exit.c task_exithook.c
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CSRCS += task_getgroup.c task_getpid.c task_prctl.c task_recover.c
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CSRCS += task_restart.c task_spawnparms.c task_cancelpt.c task_terminate.c
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CSRCS += task_gettid.c exit.c task_join.c
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ifeq ($(CONFIG_SCHED_HAVE_PARENT),y)
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CSRCS += task_getppid.c task_reparent.c
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endif
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ifeq ($(CONFIG_ARCH_HAVE_FORK),y)
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CSRCS += task_fork.c
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endif
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ifneq ($(CONFIG_BUILD_KERNEL),y)
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CSRCS += task_spawn.c
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endif
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ifneq ($(CONFIG_BINFMT_DISABLE),y)
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ifeq ($(CONFIG_LIBC_EXECFUNCS),y)
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CSRCS += task_execve.c task_posixspawn.c
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endif
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endif
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ifeq ($(CONFIG_SCHED_STARTHOOK),y)
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CSRCS += task_starthook.c
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endif
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# Include task build support
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DEPPATH += --dep-path task
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VPATH += :task
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