1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
|
// Copyright 2012 The Rust Project Developers. See the COPYRIGHT
// file at the top-level directory of this distribution and at
// http://rust-lang.org/COPYRIGHT.
//
// Licensed under the Apache License, Version 2.0 <LICENSE-APACHE or
// http://www.apache.org/licenses/LICENSE-2.0> or the MIT license
// <LICENSE-MIT or http://opensource.org/licenses/MIT>, at your
// option. This file may not be copied, modified, or distributed
// except according to those terms.
/**
* Main entry point into the Rust runtime. Here we initialize the kernel,
* create the initial scheduler and run the main task.
*/
#include "rust_globals.h"
#include "rust_kernel.h"
#include "rust_util.h"
#include "rust_scheduler.h"
#include "rust_gc_metadata.h"
void* global_crate_map = NULL;
/**
The runtime entrypoint. The (C ABI) main function generated by rustc calls
`rust_start`, providing the address of the Rust ABI main function, the
platform argument vector, and a `crate_map` the provides some logging
metadata.
*/
extern "C" CDECL int
rust_start(uintptr_t main_fn, int argc, char **argv, void* crate_map) {
// Load runtime configuration options from the environment.
// FIXME #1497: Should provide a way to get these from the command
// line as well.
rust_env *env = load_env(argc, argv);
global_crate_map = crate_map;
update_gc_metadata(crate_map);
update_log_settings(crate_map, env->logspec);
rust_kernel *kernel = new rust_kernel(env);
// Create the main task
rust_sched_id sched_id = kernel->main_sched_id();
rust_scheduler *sched = kernel->get_scheduler_by_id(sched_id);
assert(sched != NULL);
rust_task *root_task = sched->create_task(NULL, "main");
// Schedule the main Rust task
root_task->start((spawn_fn)main_fn, NULL, NULL);
// At this point the task lifecycle is responsible for it
// and our pointer may not be valid
root_task = NULL;
// Run the kernel until all schedulers exit
int ret = kernel->run();
delete kernel;
free_env(env);
return ret;
}
//
// Local Variables:
// mode: C++
// fill-column: 78;
// indent-tabs-mode: nil
// c-basic-offset: 4
// buffer-file-coding-system: utf-8-unix
// End:
//
|
