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
use libc::c_char;
use libc::c_int;
use std::ffi::CStr;
use std::ffi::CString;
use std::sync::Mutex;
use std::vec::Vec;
use crate::platform::Platform;
use crate::support::UniquePtr;
extern "C" {
fn v8__V8__SetFlagsFromCommandLine(argc: *mut c_int, argv: *mut *mut c_char);
fn v8__V8__GetVersion() -> *const c_char;
fn v8__V8__InitializePlatform(platform: &'static mut Platform);
fn v8__V8__Initialize();
fn v8__V8__Dispose() -> bool;
fn v8__V8__ShutdownPlatform() -> ();
}
#[derive(Debug, Eq, PartialEq)]
enum GlobalState {
Uninitialized,
PlatformInitialized,
Initialized,
Disposed,
PlatformShutdown,
}
use GlobalState::*;
lazy_static! {
static ref GLOBAL_STATE: Mutex<GlobalState> =
Mutex::new(GlobalState::Uninitialized);
}
pub fn assert_initialized() {
let global_state_guard = GLOBAL_STATE.lock().unwrap();
assert_eq!(*global_state_guard, Initialized);
}
pub fn set_flags_from_command_line(args: Vec<String>) -> Vec<String> {
let mut raw_argv = args
.iter()
.map(|arg| CString::new(arg.as_str()).unwrap().into_bytes_with_nul())
.collect::<Vec<_>>();
let mut c_argv = raw_argv
.iter_mut()
.map(|arg| arg.as_mut_ptr() as *mut c_char)
.collect::<Vec<_>>();
let mut c_argv_len = c_argv.len() as c_int;
unsafe {
v8__V8__SetFlagsFromCommandLine(&mut c_argv_len, c_argv.as_mut_ptr())
};
c_argv.truncate(c_argv_len as usize);
c_argv
.iter()
.map(|ptr| unsafe {
let cstr = CStr::from_ptr(*ptr as *const c_char);
let slice = cstr.to_str().unwrap();
slice.to_string()
})
.collect()
}
pub fn get_version() -> &'static str {
let version = unsafe { v8__V8__GetVersion() };
let c_str = unsafe { CStr::from_ptr(version) };
c_str.to_str().unwrap()
}
pub fn initialize_platform(platform: UniquePtr<Platform>) {
let mut global_state_guard = GLOBAL_STATE.lock().unwrap();
assert_eq!(*global_state_guard, Uninitialized);
unsafe { v8__V8__InitializePlatform(&mut *platform.into_raw()) };
*global_state_guard = PlatformInitialized;
}
pub fn initialize() {
let mut global_state_guard = GLOBAL_STATE.lock().unwrap();
assert_eq!(*global_state_guard, PlatformInitialized);
unsafe { v8__V8__Initialize() };
*global_state_guard = Initialized;
}
pub unsafe fn dispose() -> bool {
let mut global_state_guard = GLOBAL_STATE.lock().unwrap();
assert_eq!(*global_state_guard, Initialized);
assert_eq!(v8__V8__Dispose(), true);
*global_state_guard = Disposed;
true
}
pub fn shutdown_platform() {
let mut global_state_guard = GLOBAL_STATE.lock().unwrap();
assert_eq!(*global_state_guard, Disposed);
unsafe { v8__V8__ShutdownPlatform() };
*global_state_guard = PlatformShutdown;
}