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add spawn thread API and sample (#333)

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This commit is contained in:
Xu Jun
2020-08-04 17:40:45 +08:00
committed by GitHub
parent ed8ddb2cea
commit 2db335c6d4
11 changed files with 591 additions and 7 deletions
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67
core/iwasm/libraries/thread-mgr/thread_manager.c
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@ -27,7 +27,8 @@ static uint32 cluster_max_thread_num = CLUSTER_MAX_THREAD_NUM;
void
wasm_cluster_set_max_thread_num(uint32 num)
{
cluster_max_thread_num = num;
if (num > 0)
cluster_max_thread_num = num;
}
bool
@ -278,6 +279,70 @@ wasm_cluster_del_exec_env(WASMCluster *cluster, WASMExecEnv *exec_env)
return ret;
}
WASMExecEnv *
wasm_cluster_spawn_exec_env(WASMExecEnv *exec_env)
{
WASMCluster *cluster = wasm_exec_env_get_cluster(exec_env);
wasm_module_t module = wasm_exec_env_get_module(exec_env);
wasm_module_inst_t new_module_inst;
WASMExecEnv *new_exec_env;
uint32 aux_stack_start, aux_stack_size;
if (!(new_module_inst =
wasm_runtime_instantiate_internal(module, true, 8192,
0, NULL, 0))) {
return NULL;
}
new_exec_env = wasm_exec_env_create_internal(
new_module_inst, exec_env->wasm_stack_size);
if (!new_exec_env)
goto fail1;
if (!allocate_aux_stack(cluster, &aux_stack_start, &aux_stack_size)) {
LOG_ERROR("thread manager error: "
"failed to allocate aux stack space for new thread");
goto fail2;
}
/* Set aux stack for current thread */
if (!wasm_exec_env_set_aux_stack(new_exec_env, aux_stack_start,
aux_stack_size)) {
goto fail3;
}
if (!wasm_cluster_add_exec_env(cluster, new_exec_env))
goto fail3;
return new_exec_env;
fail3:
/* free the allocated aux stack space */
free_aux_stack(cluster, aux_stack_start);
fail2:
wasm_exec_env_destroy(new_exec_env);
fail1:
wasm_runtime_deinstantiate_internal(new_module_inst, true);
return NULL;
}
void
wasm_cluster_destroy_spawned_exec_env(WASMExecEnv *exec_env)
{
WASMCluster *cluster = wasm_exec_env_get_cluster(exec_env);
wasm_module_inst_t module_inst = wasm_runtime_get_module_inst(exec_env);
bh_assert(cluster != NULL);
/* Free aux stack space */
free_aux_stack(cluster,
exec_env->aux_stack_boundary + cluster->stack_size);
wasm_cluster_del_exec_env(cluster, exec_env);
wasm_exec_env_destroy_internal(exec_env);
wasm_runtime_deinstantiate_internal(module_inst, true);
}
/* start routine of thread manager */
static void*
thread_manager_start_routine(void *arg)