nuttx/sched
chao an df30a1f8d3 sched/pthread/join: refactor pthread join to support join task
1. add support to join main task

| static pthread_t self;
|
| static void *join_task(void *arg)
| {
|   int ret;
|   ret = pthread_join(self, NULL);          <---  /* Fix Task could not be joined */
|   return NULL;
| }
|
| int main(int argc, char *argv[])
| {
|   pthread_t thread;
|
|   self = pthread_self();
|
|   pthread_create(&thread, NULL, join_task, NULL);
|   sleep(1);
|
|   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>
2024-03-13 18:06:56 +09:00
..
addrenv
clock sched/group: change type of task group member to single queue 2024-03-07 12:39:29 +08:00
environ sched/environ: check envcp validity before hold sched_lock() 2024-03-05 22:24:14 +08:00
group sched/pthread/join: refactor pthread join to support join task 2024-03-13 18:06:56 +09:00
init sched/pthread/join: refactor pthread join to support join task 2024-03-13 18:06:56 +09:00
instrument
irq SMP: fix crash when switch to new task which is still running 2024-03-01 21:05:00 +09:00
misc assert: fix flags type, should be irqstate_t 2024-01-04 22:16:54 -08:00
module fs: procfs add poll support 2023-12-26 19:23:13 -08:00
mqueue
paging paging: Rename existing CONFIG_PAGING to CONFIG_LEGACY_PAGING 2024-03-05 09:45:49 +08:00
pthread sched/pthread/join: refactor pthread join to support join task 2024-03-13 18:06:56 +09:00
sched sched/pthread/join: refactor pthread join to support join task 2024-03-13 18:06:56 +09:00
semaphore
signal sched/group: replace group_findbypid to task_getgroup 2024-03-05 22:24:52 +08:00
task sched/pthread/join: refactor pthread join to support join task 2024-03-13 18:06:56 +09:00
timer
tls sched/tls: inline group info in flat mode to improve performance 2024-03-01 17:27:26 +08:00
wdog
wqueue
CMakeLists.txt
Kconfig sched: move etc romfs mount from nsh to sched/init 2024-01-09 21:29:46 -03:00
Makefile