christoph/wamr
1
Fork 0
Code Releases Activity

add spawn thread API and sample (#333)

Browse Source
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
Download Patch File Download Diff File Expand all files Collapse all files

220
samples/spawn-thread/src/main.c Normal file
View File

@ -0,0 +1,220 @@
/*
* Copyright (C) 2019 Intel Corporation. All rights reserved.
* SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
*/
#include "wasm_export.h"
#include "bh_read_file.h"
#include "pthread.h"
#define THREAD_NUM 10
typedef struct ThreadArgs {
wasm_exec_env_t exec_env;
int start;
int length;
} ThreadArgs;
void *thread(void* arg)
{
ThreadArgs *thread_arg = (ThreadArgs *)arg;
wasm_exec_env_t exec_env = thread_arg->exec_env;
wasm_module_inst_t module_inst = get_module_inst(exec_env);
wasm_function_inst_t func;
uint32 argv[2];
func = wasm_runtime_lookup_function(module_inst, "sum", NULL);
if (!func) {
printf("failed to lookup function sum");
}
argv[0] = thread_arg->start;
argv[1] = thread_arg->length;
/* call the WASM function */
if (!wasm_runtime_call_wasm(exec_env, func, 2, argv)) {
printf("%s\n", wasm_runtime_get_exception(module_inst));
return NULL;
}
return (void *)(uintptr_t)argv[0];
}
void *wamr_thread_cb(wasm_exec_env_t exec_env, void *arg)
{
ThreadArgs *thread_arg = (ThreadArgs *)arg;
wasm_module_inst_t module_inst = get_module_inst(exec_env);
wasm_function_inst_t func;
uint32 argv[2];
func = wasm_runtime_lookup_function(module_inst, "sum", NULL);
if (!func) {
printf("failed to lookup function sum");
}
argv[0] = thread_arg->start;
argv[1] = thread_arg->length;
/* call the WASM function */
if (!wasm_runtime_call_wasm(exec_env, func, 2, argv)) {
printf("%s\n", wasm_runtime_get_exception(module_inst));
return NULL;
}
return (void *)(uintptr_t)argv[0];
}
int main(int argc, char *argv[])
{
char *wasm_file = "wasm-apps/test.wasm";
uint8 *wasm_file_buf = NULL;
uint32 wasm_file_size, wasm_argv[2], i;
uint32 stack_size = 16 * 1024, heap_size = 16 * 1024;
wasm_module_t wasm_module = NULL;
wasm_module_inst_t wasm_module_inst = NULL;
wasm_exec_env_t exec_env = NULL;
RuntimeInitArgs init_args;
ThreadArgs thread_arg[THREAD_NUM];
pthread_t tid[THREAD_NUM];
wasm_thread_t wasm_tid[THREAD_NUM];
uint32 result[THREAD_NUM], sum;
wasm_function_inst_t func;
char error_buf[128] = { 0 };
memset(thread_arg, 0, sizeof(ThreadArgs) * THREAD_NUM);
memset(&init_args, 0, sizeof(RuntimeInitArgs));
init_args.mem_alloc_type = Alloc_With_Allocator;
init_args.mem_alloc_option.allocator.malloc_func = malloc;
init_args.mem_alloc_option.allocator.realloc_func = realloc;
init_args.mem_alloc_option.allocator.free_func = free;
init_args.max_thread_num = THREAD_NUM;
/* initialize runtime environment */
if (!wasm_runtime_full_init(&init_args)) {
printf("Init runtime environment failed.\n");
return -1;
}
/* load WASM byte buffer from WASM bin file */
if (!(wasm_file_buf =
(uint8 *)bh_read_file_to_buffer(wasm_file, &wasm_file_size)))
goto fail1;
/* load WASM module */
if (!(wasm_module = wasm_runtime_load(wasm_file_buf, wasm_file_size,
error_buf, sizeof(error_buf)))) {
printf("%s\n", error_buf);
goto fail2;
}
/* instantiate the module */
if (!(wasm_module_inst =
wasm_runtime_instantiate(wasm_module, stack_size, heap_size,
error_buf, sizeof(error_buf)))) {
printf("%s\n", error_buf);
goto fail3;
}
/* Create the first exec_env */
if (!(exec_env =
wasm_runtime_create_exec_env(wasm_module_inst, stack_size))) {
printf("failed to create exec_env\n");
goto fail4;
}
func = wasm_runtime_lookup_function(wasm_module_inst, "sum", NULL);
if (!func) {
printf("failed to lookup function sum");
}
wasm_argv[0] = 0;
wasm_argv[1] = THREAD_NUM * 10;
/*
* Execute the wasm function in current thread, get the expect result
*/
if (!wasm_runtime_call_wasm(exec_env, func, 2, wasm_argv)) {
printf("%s\n", wasm_runtime_get_exception(wasm_module_inst));
}
printf("expect result: %d\n", wasm_argv[0]);
/*
* Run wasm function in multiple thread created by pthread_create
*/
memset(thread_arg, 0, sizeof(ThreadArgs) * THREAD_NUM);
for (i = 0; i < THREAD_NUM; i++) {
wasm_exec_env_t new_exec_env;
thread_arg[i].start = 10 * i;
thread_arg[i].length = 10;
/* spawn a new exec_env to be executed in other threads */
new_exec_env = wasm_runtime_spawn_exec_env(exec_env);
if (new_exec_env)
thread_arg[i].exec_env = new_exec_env;
else {
printf("failed to spawn exec_env\n");
break;
}
/* If we use:
thread_arg[i].exec_env = exec_env,
we may get wrong result */
if (0 != pthread_create(&tid[i], NULL, thread, &thread_arg[i])) {
printf("failed to create thread.\n");
break;
}
}
sum = 0;
memset(result, 0, sizeof(uint32) * THREAD_NUM);
for (i = 0; i < THREAD_NUM; i++) {
pthread_join(tid[i], (void **)&result[i]);
sum += result[i];
/* destroy the spawned exec_env */
if (thread_arg[0].exec_env)
wasm_runtime_destroy_spawned_exec_env(thread_arg[i].exec_env);
}
printf("[pthread]sum result: %d\n", sum);
/*
* Run wasm function in multiple thread created by wamr spawn API
*/
memset(thread_arg, 0, sizeof(ThreadArgs) * THREAD_NUM);
for (i = 0; i < THREAD_NUM; i++) {
thread_arg[i].start = 10 * i;
thread_arg[i].length = 10;
/* No need to spawn exec_env manually */
if (0 != wasm_runtime_spawn_thread(exec_env, &wasm_tid[i],
wamr_thread_cb, &thread_arg[i])) {
printf("failed to spawn thread.\n");
break;
}
}
sum = 0;
memset(result, 0, sizeof(uint32) * THREAD_NUM);
for (i = 0; i < THREAD_NUM; i++) {
wasm_runtime_join_thread(wasm_tid[i], (void**)&result[i]);
sum += result[i];
/* No need to destroy the spawned exec_env */
}
printf("[spwan_thread]sum result: %d\n", sum);
wasm_runtime_destroy_exec_env(exec_env);
fail4:
/* destroy the module instance */
wasm_runtime_deinstantiate(wasm_module_inst);
fail3:
/* unload the module */
wasm_runtime_unload(wasm_module);
fail2:
/* free the file buffer */
wasm_runtime_free(wasm_file_buf);
fail1:
/* destroy runtime environment */
wasm_runtime_destroy();
}