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thread-mgr: Prevent an already detached thread from being detached again (#1487)

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If WASM app has called pthread_detach() to detach a thread, it will be detached again
when thread exits. Attempting to detach an already detached thread may result in crash
in musl-libc. This patch fixes it.
This commit is contained in:
Shengyun Zhou 2022-09-15 17:13:33 +08:00 committed by GitHub
parent bbea005db6
commit edaff3c6ec
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1 changed files with 1 additions and 1 deletions
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2
core/iwasm/libraries/thread-mgr/thread_manager.c
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@ -705,7 +705,7 @@ wasm_cluster_detach_thread(WASMExecEnv *exec_env)
os_mutex_unlock(&cluster_list_lock);
return 0;
}
if (exec_env->wait_count == 0) {
if (exec_env->wait_count == 0 && !exec_env->thread_is_detached) {
/* Only detach current thread when there is no other thread
joining it, otherwise let the system resources for the
thread be released after joining */