in GaiaXAndroidQuickJS/quickjs/gxquickjs/qjs.c [307:570]
int main(int argc, char **argv)
{
JSRuntime *rt;
JSContext *ctx;
struct trace_malloc_data trace_data = { NULL };
int optind;
char *expr = NULL;
int interactive = 0;
int dump_memory = 0;
int trace_memory = 0;
int empty_run = 0;
int module = -1;
int load_std = 0;
int dump_unhandled_promise_rejection = 0;
size_t memory_limit = 0;
char *include_list[32];
int i, include_count = 0;
#ifdef CONFIG_BIGNUM
int load_jscalc;
#endif
size_t stack_size = 0;
#ifdef CONFIG_BIGNUM
/* load jscalc runtime if invoked as 'qjscalc' */
{
const char *p, *exename;
exename = argv[0];
p = strrchr(exename, '/');
if (p)
exename = p + 1;
load_jscalc = !strcmp(exename, "qjscalc");
}
#endif
/* cannot use getopt because we want to pass the command line to
the script */
optind = 1;
while (optind < argc && *argv[optind] == '-') {
char *arg = argv[optind] + 1;
const char *longopt = "";
/* a single - is not an option, it also stops argument scanning */
if (!*arg)
break;
optind++;
if (*arg == '-') {
longopt = arg + 1;
arg += strlen(arg);
/* -- stops argument scanning */
if (!*longopt)
break;
}
for (; *arg || *longopt; longopt = "") {
char opt = *arg;
if (opt)
arg++;
if (opt == 'h' || opt == '?' || !strcmp(longopt, "help")) {
help();
continue;
}
if (opt == 'e' || !strcmp(longopt, "eval")) {
if (*arg) {
expr = arg;
break;
}
if (optind < argc) {
expr = argv[optind++];
break;
}
fprintf(stderr, "qjs: missing expression for -e\n");
exit(2);
}
if (opt == 'I' || !strcmp(longopt, "include")) {
if (optind >= argc) {
fprintf(stderr, "expecting filename");
exit(1);
}
if (include_count >= countof(include_list)) {
fprintf(stderr, "too many included files");
exit(1);
}
include_list[include_count++] = argv[optind++];
continue;
}
if (opt == 'i' || !strcmp(longopt, "interactive")) {
interactive++;
continue;
}
if (opt == 'm' || !strcmp(longopt, "module")) {
module = 1;
continue;
}
if (!strcmp(longopt, "script")) {
module = 0;
continue;
}
if (opt == 'd' || !strcmp(longopt, "dump")) {
dump_memory++;
continue;
}
if (opt == 'T' || !strcmp(longopt, "trace")) {
trace_memory++;
continue;
}
if (!strcmp(longopt, "std")) {
load_std = 1;
continue;
}
if (!strcmp(longopt, "unhandled-rejection")) {
dump_unhandled_promise_rejection = 1;
continue;
}
#ifdef CONFIG_BIGNUM
if (!strcmp(longopt, "bignum")) {
bignum_ext = 1;
continue;
}
if (!strcmp(longopt, "qjscalc")) {
load_jscalc = 1;
continue;
}
#endif
if (opt == 'q' || !strcmp(longopt, "quit")) {
empty_run++;
continue;
}
if (!strcmp(longopt, "memory-limit")) {
if (optind >= argc) {
fprintf(stderr, "expecting memory limit");
exit(1);
}
memory_limit = (size_t)strtod(argv[optind++], NULL);
continue;
}
if (!strcmp(longopt, "stack-size")) {
if (optind >= argc) {
fprintf(stderr, "expecting stack size");
exit(1);
}
stack_size = (size_t)strtod(argv[optind++], NULL);
continue;
}
if (opt) {
fprintf(stderr, "qjs: unknown option '-%c'\n", opt);
} else {
fprintf(stderr, "qjs: unknown option '--%s'\n", longopt);
}
help();
}
}
if (load_jscalc)
bignum_ext = 1;
if (trace_memory) {
js_trace_malloc_init(&trace_data);
rt = JS_NewRuntime2(&trace_mf, &trace_data);
} else {
rt = JS_NewRuntime();
}
if (!rt) {
fprintf(stderr, "qjs: cannot allocate JS runtime\n");
exit(2);
}
if (memory_limit != 0)
JS_SetMemoryLimit(rt, memory_limit);
if (stack_size != 0)
JS_SetMaxStackSize(rt, stack_size);
js_std_set_worker_new_context_func(JS_NewCustomContext);
js_std_init_handlers(rt);
ctx = JS_NewCustomContext(rt);
if (!ctx) {
fprintf(stderr, "qjs: cannot allocate JS context\n");
exit(2);
}
/* loader for ES6 modules */
JS_SetModuleLoaderFunc(rt, NULL, js_module_loader, NULL);
if (dump_unhandled_promise_rejection) {
JS_SetHostPromiseRejectionTracker(rt, js_std_promise_rejection_tracker,
NULL);
}
if (!empty_run) {
#ifdef CONFIG_BIGNUM
if (load_jscalc) {
js_std_eval_binary(ctx, qjsc_qjscalc, qjsc_qjscalc_size, 0);
}
#endif
js_std_add_helpers(ctx, argc - optind, argv + optind);
/* make 'std' and 'os' visible to non module code */
if (load_std) {
const char *str = "import * as std from 'std';\n"
"import * as os from 'os';\n"
"globalThis.std = std;\n"
"globalThis.os = os;\n";
eval_buf(ctx, str, strlen(str), "<input>", JS_EVAL_TYPE_MODULE);
}
for(i = 0; i < include_count; i++) {
if (eval_file(ctx, include_list[i], module))
goto fail;
}
if (expr) {
if (eval_buf(ctx, expr, strlen(expr), "<cmdline>", 0))
goto fail;
} else
if (optind >= argc) {
/* interactive mode */
interactive = 1;
} else {
const char *filename;
filename = argv[optind];
if (eval_file(ctx, filename, module))
goto fail;
}
if (interactive) {
js_std_eval_binary(ctx, qjsc_repl, qjsc_repl_size, 0);
}
js_std_loop(ctx);
}
if (dump_memory) {
JSMemoryUsage stats;
JS_ComputeMemoryUsage(rt, &stats);
JS_DumpMemoryUsage(stdout, &stats, rt);
}
js_std_free_handlers(rt);
JS_FreeContext(ctx);
JS_FreeRuntime(rt);
if (empty_run && dump_memory) {
clock_t t[5];
double best[5];
int i, j;
for (i = 0; i < 100; i++) {
t[0] = clock();
rt = JS_NewRuntime();
t[1] = clock();
ctx = JS_NewContext(rt);
t[2] = clock();
JS_FreeContext(ctx);
t[3] = clock();
JS_FreeRuntime(rt);
t[4] = clock();
for (j = 4; j > 0; j--) {
double ms = 1000.0 * (t[j] - t[j - 1]) / CLOCKS_PER_SEC;
if (i == 0 || best[j] > ms)
best[j] = ms;
}
}
printf("\nInstantiation times (ms): %.3f = %.3f+%.3f+%.3f+%.3f\n",
best[1] + best[2] + best[3] + best[4],
best[1], best[2], best[3], best[4]);
}
return 0;
fail:
js_std_free_handlers(rt);
JS_FreeContext(ctx);
JS_FreeRuntime(rt);
return 1;
}