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
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
|
#include "rust_internal.h"
struct
command_line_args : public kernel_owned<command_line_args>
{
rust_kernel *kernel;
rust_task *task;
int argc;
char **argv;
// vec[str] passed to rust_task::start.
rust_vec *args;
rust_ivec *args_ivec;
command_line_args(rust_task *task,
int sys_argc,
char **sys_argv,
bool main_is_ivec)
: kernel(task->kernel),
task(task),
argc(sys_argc),
argv(sys_argv),
args(NULL)
{
#if defined(__WIN32__)
LPCWSTR cmdline = GetCommandLineW();
LPWSTR *wargv = CommandLineToArgvW(cmdline, &argc);
kernel->win32_require("CommandLineToArgvW", wargv != NULL);
argv = (char **) kernel->malloc(sizeof(char*) * argc,
"win32 command line");
for (int i = 0; i < argc; ++i) {
int n_chars = WideCharToMultiByte(CP_UTF8, 0, wargv[i], -1,
NULL, 0, NULL, NULL);
kernel->win32_require("WideCharToMultiByte(0)", n_chars != 0);
argv[i] = (char *) kernel->malloc(n_chars,
"win32 command line arg");
n_chars = WideCharToMultiByte(CP_UTF8, 0, wargv[i], -1,
argv[i], n_chars, NULL, NULL);
kernel->win32_require("WideCharToMultiByte(1)", n_chars != 0);
}
LocalFree(wargv);
#endif
size_t vec_fill = sizeof(rust_str *) * argc;
size_t vec_alloc = next_power_of_two(sizeof(rust_vec) + vec_fill);
void *mem = kernel->malloc(vec_alloc, "command line");
args = new (mem) rust_vec(vec_alloc, 0, NULL);
rust_str **strs = (rust_str**) &args->data[0];
for (int i = 0; i < argc; ++i) {
size_t str_fill = strlen(argv[i]) + 1;
size_t str_alloc = next_power_of_two(sizeof(rust_str) + str_fill);
mem = kernel->malloc(str_alloc, "command line arg");
strs[i] = new (mem) rust_str(str_alloc, str_fill,
(uint8_t const *)argv[i]);
strs[i]->ref_count++;
}
args->fill = vec_fill;
// If the caller has a declared args array, they may drop; but
// we don't know if they have such an array. So we pin the args
// array here to ensure it survives to program-shutdown.
args->ref();
size_t ivec_interior_sz =
sizeof(size_t) * 2 + sizeof(rust_str *) * 4;
args_ivec = (rust_ivec *)
kernel->malloc(ivec_interior_sz,
"command line arg interior");
args_ivec->fill = 0;
size_t ivec_exterior_sz = sizeof(rust_str *) * argc;
args_ivec->alloc = ivec_exterior_sz;
if (main_is_ivec) {
// NB: This is freed by some ivec machinery, probably the drop
// glue in main, so we don't free it ourselves
args_ivec->payload.ptr = (rust_ivec_heap *)
kernel->malloc(ivec_exterior_sz + sizeof(size_t),
"command line arg exterior");
args_ivec->payload.ptr->fill = ivec_exterior_sz;
memcpy(&args_ivec->payload.ptr->data, strs, ivec_exterior_sz);
}
}
~command_line_args() {
kernel->free(args_ivec);
if (args) {
// Drop the args we've had pinned here.
rust_str **strs = (rust_str**) &args->data[0];
for (int i = 0; i < argc; ++i)
kernel->free(strs[i]);
kernel->free(args);
}
#ifdef __WIN32__
for (int i = 0; i < argc; ++i) {
kernel->free(argv[i]);
}
kernel->free(argv);
#endif
}
};
/**
* Main entry point into the Rust runtime. Here we create a Rust service,
* initialize the kernel, create the root domain and run it.
*/
int check_claims = 0;
extern "C" CDECL int
rust_start(uintptr_t main_fn, int argc, char **argv,
void* crate_map, int main_takes_ivec) {
rust_env *env = load_env();
update_log_settings(crate_map, env->logspec);
check_claims = env->check_claims;
rust_srv *srv = new rust_srv(env);
rust_kernel *kernel = new rust_kernel(srv, env->num_sched_threads);
rust_task_id root_id = kernel->create_task(NULL, "main");
rust_task *root_task = kernel->get_task_by_id(root_id);
I(kernel, root_task != NULL);
rust_scheduler *sched = root_task->sched;
command_line_args *args
= new (kernel, "main command line args")
command_line_args(root_task, argc, argv, main_takes_ivec);
DLOG(sched, dom, "startup: %d args in 0x%" PRIxPTR,
args->argc, (uintptr_t)args->args);
for (int i = 0; i < args->argc; i++) {
DLOG(sched, dom, "startup: arg[%d] = '%s'", i, args->argv[i]);
}
root_task->start(main_fn, (uintptr_t)args->args_ivec);
root_task->deref();
root_task = NULL;
int ret = kernel->start_task_threads();
delete args;
delete kernel;
delete srv;
free_env(env);
#if !defined(__WIN32__)
// Don't take down the process if the main thread exits without an
// error.
if (!ret)
pthread_exit(NULL);
#endif
return ret;
}
// FIXME: Transitional. Please remove.
extern "C" CDECL int
rust_start_ivec(uintptr_t main_fn, int argc, char **argv,
void* crate_map, int main_takes_ivec) {
return rust_start(main_fn, argc, argv, crate_map, main_takes_ivec);
}
//
// Local Variables:
// mode: C++
// fill-column: 78;
// indent-tabs-mode: nil
// c-basic-offset: 4
// buffer-file-coding-system: utf-8-unix
// compile-command: "make -k -C $RBUILD 2>&1 | sed -e 's/\\/x\\//x:\\//g'";
// End:
//
|
