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>
65 lines
1.8 KiB
CMake
65 lines
1.8 KiB
CMake
# ##############################################################################
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# sched/task/CMakeLists.txt
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#
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# Licensed to the Apache Software Foundation (ASF) under one or more contributor
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# license agreements. See the NOTICE file distributed with this work for
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# additional information regarding copyright ownership. The ASF licenses this
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# file to you under the Apache License, Version 2.0 (the "License"); you may not
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# use this file except in compliance with the License. You may obtain a copy of
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# 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 under
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# the License.
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#
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# ##############################################################################
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set(SRCS
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task_create.c
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task_init.c
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task_setup.c
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task_activate.c
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task_start.c
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task_delete.c
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task_exit.c
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task_exithook.c
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task_getgroup.c
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task_getpid.c
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task_prctl.c
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task_recover.c
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task_restart.c
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task_spawnparms.c
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task_cancelpt.c
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task_terminate.c
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task_gettid.c
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task_join.c
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exit.c)
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if(CONFIG_SCHED_HAVE_PARENT)
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list(APPEND SRCS task_getppid.c task_reparent.c)
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endif()
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if(CONFIG_ARCH_HAVE_FORK)
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list(APPEND SRCS task_fork.c)
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endif()
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if(NOT CONFIG_BUILD_KERNEL)
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list(APPEND SRCS task_spawn.c)
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endif()
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if(NOT CONFIG_BINFMT_DISABLE)
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if(CONFIG_LIBC_EXECFUNCS)
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list(APPEND SRCS task_execve.c task_posixspawn.c)
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endif()
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endif()
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if(CONFIG_SCHED_STARTHOOK)
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list(APPEND SRCS task_starthook.c)
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endif()
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target_sources(sched PRIVATE ${SRCS})
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