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Fix lib-pthread issues (#2410)

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- Avoid destroying module instance repeatedly in pthread_exit_wrapper and
  wasm_thread_cluster_exit.
- Wait enough time in pthread_join_wrapper for target thread to exit and
  destroy its resources.
This commit is contained in:
Wenyong Huang 2023-08-01 18:11:58 +08:00 committed by GitHub
parent b88f2c06c6
commit cb6d85069e
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1 changed files with 10 additions and 4 deletions
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14
core/iwasm/libraries/lib-pthread/lib_pthread_wrapper.c
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@ -691,6 +691,14 @@ pthread_join_wrapper(wasm_exec_env_t exec_env, uint32 thread,
bh_assert(node->joinable);
join_ret = 0;
ret = node->u.ret;
/* The target thread changes the node's status before calling
wasm_cluster_exit_thread to exit, so here its resources may
haven't been destroyed yet, we wait enough time to ensure that
they are actually destroyed to avoid unexpected behavior. */
os_mutex_lock(&exec_env->wait_lock);
os_cond_reltimedwait(&exec_env->wait_cond, &exec_env->wait_lock, 1000);
os_mutex_unlock(&exec_env->wait_lock);
}
if (retval_offset != 0)
@ -758,7 +766,6 @@ __pthread_self_wrapper(wasm_exec_env_t exec_env)
static void
pthread_exit_wrapper(wasm_exec_env_t exec_env, int32 retval_offset)
{
wasm_module_inst_t module_inst = get_module_inst(exec_env);
ThreadRoutineArgs *args = get_thread_arg(exec_env);
/* Currently exit main thread is not allowed */
if (!args)
@ -776,9 +783,6 @@ pthread_exit_wrapper(wasm_exec_env_t exec_env, int32 retval_offset)
/* destroy pthread key values */
call_key_destructor(exec_env);
/* routine exit, destroy instance */
wasm_runtime_deinstantiate_internal(module_inst, true);
if (!args->info_node->joinable) {
delete_thread_info_node(args->info_node);
}
@ -790,6 +794,8 @@ pthread_exit_wrapper(wasm_exec_env_t exec_env, int32 retval_offset)
wasm_runtime_free(args);
/* Don't destroy exec_env->module_inst in this functuntion since
it will be destroyed in wasm_cluster_exit_thread */
wasm_cluster_exit_thread(exec_env, (void *)(uintptr_t)retval_offset);
}