44bef5f2cb
This is the new way to refer to tasks in rust-land. Currently all they do is serve as a key to look up the old rust_task structure. Ideally they won't be ref counted, but baby steps.
137 lines
4.4 KiB
C++
137 lines
4.4 KiB
C++
#include "rust_internal.h"
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struct
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command_line_args : public kernel_owned<command_line_args>
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{
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rust_kernel *kernel;
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rust_task *task;
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int argc;
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char **argv;
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// vec[str] passed to rust_task::start.
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rust_vec *args;
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command_line_args(rust_task *task,
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int sys_argc,
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char **sys_argv)
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: kernel(task->kernel),
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task(task),
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argc(sys_argc),
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argv(sys_argv),
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args(NULL)
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{
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#if defined(__WIN32__)
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LPCWSTR cmdline = GetCommandLineW();
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LPWSTR *wargv = CommandLineToArgvW(cmdline, &argc);
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kernel->win32_require("CommandLineToArgvW", wargv != NULL);
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argv = (char **) kernel->malloc(sizeof(char*) * argc,
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"win32 command line");
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for (int i = 0; i < argc; ++i) {
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int n_chars = WideCharToMultiByte(CP_UTF8, 0, wargv[i], -1,
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NULL, 0, NULL, NULL);
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kernel->win32_require("WideCharToMultiByte(0)", n_chars != 0);
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argv[i] = (char *) kernel->malloc(n_chars,
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"win32 command line arg");
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n_chars = WideCharToMultiByte(CP_UTF8, 0, wargv[i], -1,
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argv[i], n_chars, NULL, NULL);
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kernel->win32_require("WideCharToMultiByte(1)", n_chars != 0);
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}
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LocalFree(wargv);
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#endif
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size_t vec_fill = sizeof(rust_str *) * argc;
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size_t vec_alloc = next_power_of_two(sizeof(rust_vec) + vec_fill);
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void *mem = kernel->malloc(vec_alloc, "command line");
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args = new (mem) rust_vec(vec_alloc, 0, NULL);
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rust_str **strs = (rust_str**) &args->data[0];
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for (int i = 0; i < argc; ++i) {
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size_t str_fill = strlen(argv[i]) + 1;
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size_t str_alloc = next_power_of_two(sizeof(rust_str) + str_fill);
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mem = kernel->malloc(str_alloc, "command line arg");
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strs[i] = new (mem) rust_str(str_alloc, str_fill,
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(uint8_t const *)argv[i]);
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}
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args->fill = vec_fill;
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// If the caller has a declared args array, they may drop; but
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// we don't know if they have such an array. So we pin the args
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// array here to ensure it survives to program-shutdown.
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args->ref();
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}
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~command_line_args() {
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if (args) {
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// Drop the args we've had pinned here.
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rust_str **strs = (rust_str**) &args->data[0];
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for (int i = 0; i < argc; ++i)
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kernel->free(strs[i]);
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kernel->free(args);
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}
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#ifdef __WIN32__
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for (int i = 0; i < argc; ++i) {
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kernel->free(argv[i]);
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}
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kernel->free(argv);
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#endif
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}
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};
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/**
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* Main entry point into the Rust runtime. Here we create a Rust service,
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* initialize the kernel, create the root domain and run it.
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*/
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int check_claims = 0;
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extern "C" CDECL int
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rust_start(uintptr_t main_fn, int argc, char **argv, void* crate_map) {
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rust_env *env = load_env();
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update_log_settings(crate_map, env->logspec);
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check_claims = env->check_claims;
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rust_srv *srv = new rust_srv(env);
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rust_kernel *kernel = new rust_kernel(srv, env->num_sched_threads);
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rust_task_id root_id = kernel->create_task(NULL, "main");
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rust_task *root_task = kernel->get_task_by_id(root_id);
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I(kernel, root_task != NULL);
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rust_scheduler *sched = root_task->sched;
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command_line_args *args
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= new (kernel, "main command line args")
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command_line_args(root_task, argc, argv);
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DLOG(sched, dom, "startup: %d args in 0x%" PRIxPTR,
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args->argc, (uintptr_t)args->args);
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for (int i = 0; i < args->argc; i++) {
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DLOG(sched, dom, "startup: arg[%d] = '%s'", i, args->argv[i]);
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}
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root_task->start(main_fn, (uintptr_t)args->args);
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int ret = kernel->start_task_threads();
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delete args;
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delete kernel;
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delete srv;
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free_env(env);
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#if !defined(__WIN32__)
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// Don't take down the process if the main thread exits without an
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// error.
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if (!ret)
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pthread_exit(NULL);
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#endif
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return ret;
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}
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//
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// Local Variables:
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// mode: C++
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// fill-column: 78;
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// indent-tabs-mode: nil
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// c-basic-offset: 4
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// buffer-file-coding-system: utf-8-unix
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// compile-command: "make -k -C $RBUILD 2>&1 | sed -e 's/\\/x\\//x:\\//g'";
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// End:
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//
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