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Unify product-mini main.c implementation for POSIX compatible system (#675) #307

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Merged
merged 1 commit into from
Jul 29, 2021
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Unify product-mini main.c implementation for POSIX compatible system (#675) #307

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320 changes: 1 addition & 319 deletions product-mini/platforms/darwin/main.c
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Original file line number Diff line number Diff line change
@@ -1,319 +1 @@
/*
* Copyright (C) 2019 Intel Corporation. All rights reserved.
* SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
*/

#ifndef _GNU_SOURCE
#define _GNU_SOURCE
#endif
#include <stdlib.h>
#include <string.h>
#include "bh_platform.h"
#include "bh_assert.h"
#include "bh_log.h"
#include "bh_read_file.h"
#include "wasm_export.h"

static int app_argc;
static char **app_argv;

static int print_help()
{
printf("Usage: iwasm [-options] wasm_file [args...]\n");
printf("options:\n");
printf(" -f|--function name Specify function name to run in module\n"
" rather than main\n");
#if WASM_ENABLE_LOG != 0
printf(" -v=n Set log verbose level (0 to 5, default is 2),\n"
" larger level with more log\n");
#endif
printf(" --stack-size=n Set maximum stack size in bytes, default is 16 KB\n");
printf(" --heap-size=n Set maximum heap size in bytes, default is 16 KB\n");
printf(" --repl Start a very simple REPL (read-eval-print-loop) mode\n"
" that runs commands in the form of `FUNC ARG...`\n");
#if WASM_ENABLE_LIBC_WASI != 0
printf(" --env=<env> Pass wasi environment variables with \"key=value\"\n");
printf(" to the program, for example:\n");
printf(" --env=\"key1=value1\" --env=\"key2=value2\"\n");
printf(" --dir=<dir> Grant wasi access to the given host directories\n");
printf(" to the program, for example:\n");
printf(" --dir=<dir1> --dir=<dir2>\n");
#endif

return 1;
}

static void*
app_instance_main(wasm_module_inst_t module_inst)
{
const char *exception;

wasm_application_execute_main(module_inst, app_argc, app_argv);
if ((exception = wasm_runtime_get_exception(module_inst)))
printf("%s\n", exception);
return NULL;
}

static void*
app_instance_func(wasm_module_inst_t module_inst, const char *func_name)
{
wasm_application_execute_func(module_inst, func_name, app_argc - 1,
app_argv + 1);
/* The result of wasm function or exception info was output inside
wasm_application_execute_func(), here we don't output them again. */
return NULL;
}

/**
* Split a space separated strings into an array of strings
* Returns NULL on failure
* Memory must be freed by caller
* Based on: http://stackoverflow.com/a/11198630/471795
*/
static char **
split_string(char *str, int *count)
{
char **res = NULL;
char *p;
int idx = 0;

/* split string and append tokens to 'res' */
do {
p = strtok(str, " ");
str = NULL;
res = (char**) realloc(res, sizeof(char*) * (uint32)(idx + 1));
if (res == NULL) {
return NULL;
}
res[idx++] = p;
} while (p);

if (count) {
*count = idx - 1;
}
return res;
}

static void*
app_instance_repl(wasm_module_inst_t module_inst)
{
char *cmd = NULL;
size_t len = 0;
ssize_t n;

while ((printf("webassembly> "), n = getline(&cmd, &len, stdin)) != -1) {
bh_assert(n > 0);
if (cmd[n - 1] == '\n') {
if (n == 1)
continue;
else
cmd[n - 1] = '\0';
}
app_argv = split_string(cmd, &app_argc);
if (app_argv == NULL) {
LOG_ERROR("Wasm prepare param failed: split string failed.\n");
break;
}
if (app_argc != 0) {
wasm_application_execute_func(module_inst, app_argv[0],
app_argc - 1, app_argv + 1);
}
free(app_argv);
}
free(cmd);
return NULL;
}

#if WASM_ENABLE_LIBC_WASI != 0
static bool
validate_env_str(char *env)
{
char *p = env;
int key_len = 0;

while (*p != '\0' && *p != '=') {
key_len++;
p++;
}

if (*p != '=' || key_len == 0)
return false;

return true;
}
#endif

#define USE_GLOBAL_HEAP_BUF 0

#if USE_GLOBAL_HEAP_BUF != 0
static char global_heap_buf[10 * 1024 * 1024] = { 0 };
#endif

int main(int argc, char *argv[])
{
char *wasm_file = NULL;
const char *func_name = NULL;
uint8 *wasm_file_buf = NULL;
uint32 wasm_file_size;
uint32 stack_size = 16 * 1024, heap_size = 16 * 1024;
wasm_module_t wasm_module = NULL;
wasm_module_inst_t wasm_module_inst = NULL;
RuntimeInitArgs init_args;
char error_buf[128] = { 0 };
#if WASM_ENABLE_LOG != 0
int log_verbose_level = 2;
#endif
bool is_repl_mode = false;
#if WASM_ENABLE_LIBC_WASI != 0
const char *dir_list[8] = { NULL };
uint32 dir_list_size = 0;
const char *env_list[8] = { NULL };
uint32 env_list_size = 0;
#endif

/* Process options. */
for (argc--, argv++; argc > 0 && argv[0][0] == '-'; argc--, argv++) {
if (!strcmp(argv[0], "-f") || !strcmp(argv[0], "--function")) {
argc--, argv++;
if (argc < 2) {
print_help();
return 0;
}
func_name = argv[0];
}
#if WASM_ENABLE_LOG != 0
else if (!strncmp(argv[0], "-v=", 3)) {
log_verbose_level = atoi(argv[0] + 3);
if (log_verbose_level < 0 || log_verbose_level > 5)
return print_help();
}
#endif
else if (!strcmp(argv[0], "--repl"))
is_repl_mode = true;
else if (!strncmp(argv[0], "--stack-size=", 13)) {
if (argv[0][13] == '\0')
return print_help();
stack_size = atoi(argv[0] + 13);
}
else if (!strncmp(argv[0], "--heap-size=", 12)) {
if (argv[0][12] == '\0')
return print_help();
heap_size = atoi(argv[0] + 12);
}
#if WASM_ENABLE_LIBC_WASI != 0
else if (!strncmp(argv[0], "--dir=", 6)) {
if (argv[0][6] == '\0')
return print_help();
if (dir_list_size >= sizeof(dir_list) / sizeof(char*)) {
printf("Only allow max dir number %d\n",
(int)(sizeof(dir_list) / sizeof(char*)));
return -1;
}
dir_list[dir_list_size++] = argv[0] + 6;
}
else if (!strncmp(argv[0], "--env=", 6)) {
char *tmp_env;

if (argv[0][6] == '\0')
return print_help();
if (env_list_size >= sizeof(env_list) / sizeof(char*)) {
printf("Only allow max env number %d\n",
(int)(sizeof(env_list) / sizeof(char*)));
return -1;
}
tmp_env = argv[0] + 6;
if (validate_env_str(tmp_env))
env_list[env_list_size++] = tmp_env;
else {
printf("Wasm parse env string failed: expect \"key=value\", got \"%s\"\n",
tmp_env);
return print_help();
}
}
#endif
else
return print_help();
}

if (argc == 0)
return print_help();

wasm_file = argv[0];
app_argc = argc;
app_argv = argv;

memset(&init_args, 0, sizeof(RuntimeInitArgs));

#if USE_GLOBAL_HEAP_BUF != 0
init_args.mem_alloc_type = Alloc_With_Pool;
init_args.mem_alloc_option.pool.heap_buf = global_heap_buf;
init_args.mem_alloc_option.pool.heap_size = sizeof(global_heap_buf);
#else
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;
#endif

/* initialize runtime environment */
if (!wasm_runtime_full_init(&init_args)) {
printf("Init runtime environment failed.\n");
return -1;
}

bh_log_set_verbose_level(log_verbose_level);

/* 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;
}

#if WASM_ENABLE_LIBC_WASI != 0
wasm_runtime_set_wasi_args(wasm_module,
dir_list, dir_list_size,
NULL, 0,
env_list, env_list_size,
argv, argc);
#endif

/* 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;
}

if (is_repl_mode)
app_instance_repl(wasm_module_inst);
else if (func_name)
app_instance_func(wasm_module_inst, func_name);
else
app_instance_main(wasm_module_inst);

/* 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();
return 0;
}

#include "../posix/main.c"
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