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
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
use super::*;
use std::ops::{Deref, DerefMut};
use std::os::raw::c_void;
#[doc(hidden)]
pub struct GenericLock<'a> {
pub uid: u8,
pub offset: usize,
pub length: usize,
pub data_ptr: *mut c_void,
pub lock_ptr: *mut c_void,
pub interface: &'a LockImpl,
}
enum_from_primitive! {
#[derive(Debug,Copy,Clone)]
pub enum LockType {
Mutex = 0,
RwLock,
}
}
#[doc(hidden)]
pub trait LockImpl {
fn size_of(&self) -> usize;
fn init(&self, lock_info: &mut GenericLock, create_new: bool) -> Result<()>;
fn destroy(&self, lock_info: &mut GenericLock);
fn rlock(&self, lock_ptr: *mut c_void) -> Result<()>;
fn wlock(&self, lock_ptr: *mut c_void) -> Result<()>;
fn runlock(&self, lock_ptr: *mut c_void) -> ();
fn wunlock(&self, lock_ptr: *mut c_void) -> ();
}
pub trait ReadLockable {
fn rlock<D: SharedMemCast>(&self, lock_index: usize) -> Result<ReadLockGuard<D>>;
fn rlock_as_slice<D: SharedMemCast>(&self, lock_index: usize) -> Result<ReadLockGuardSlice<D>>;
}
pub trait WriteLockable {
fn wlock<D: SharedMemCast>(&mut self, lock_index: usize) -> Result<WriteLockGuard<D>>;
fn wlock_as_slice<D: SharedMemCast>(&mut self, lock_index: usize) -> Result<WriteLockGuardSlice<D>>;
}
pub trait ReadRaw {
unsafe fn get_raw<D: SharedMemCast>(&self) -> &D;
unsafe fn get_raw_slice<D: SharedMemCast>(&self) -> &[D];
}
pub trait WriteRaw {
unsafe fn get_raw_mut<D: SharedMemCast>(&mut self) -> &mut D;
unsafe fn get_raw_slice_mut<D: SharedMemCast>(&mut self) -> &mut [D];
}
pub struct ReadLockGuard<'a, T: 'a> {
data: &'a T,
lock_fn: &'a LockImpl,
lock_data: &'a mut c_void,
}
impl<'a, T:'a> ReadLockGuard<'a, T> {
#[doc(hidden)]
pub fn lock(data_ptr: &'a T, interface: &'a LockImpl, lock_ptr: &'a mut c_void) -> ReadLockGuard<'a, T> {
interface.rlock(lock_ptr).unwrap();
ReadLockGuard {
data: data_ptr,
lock_fn: interface,
lock_data: lock_ptr,
}
}
}
impl<'a, T: 'a> Drop for ReadLockGuard<'a, T> {
fn drop(&mut self) -> () {
self.lock_fn.runlock(self.lock_data);
}
}
impl<'a, T> Deref for ReadLockGuard<'a, T> {
type Target = &'a T;
fn deref(&self) -> &Self::Target { &self.data }
}
pub struct ReadLockGuardSlice<'a, T: 'a> {
data: &'a [T],
lock_fn: &'a LockImpl,
lock_data: &'a mut c_void,
}
impl<'a, T:'a> ReadLockGuardSlice<'a, T> {
#[doc(hidden)]
pub fn lock(data_in: &'a [T], lock_fn_in: &'a LockImpl, lock_data_in: &'a mut c_void) -> ReadLockGuardSlice<'a, T> {
lock_fn_in.rlock(lock_data_in).unwrap();
ReadLockGuardSlice {
data: data_in,
lock_fn: lock_fn_in,
lock_data: lock_data_in,
}
}
}
impl<'a, T: 'a> Drop for ReadLockGuardSlice<'a, T> {
fn drop(&mut self) -> () {
self.lock_fn.runlock(self.lock_data);
}
}
impl<'a, T> Deref for ReadLockGuardSlice<'a, T> {
type Target = &'a [T];
fn deref(&self) -> &Self::Target { &self.data }
}
pub struct WriteLockGuard<'a, T: 'a> {
data: &'a mut T,
lock_fn: &'a LockImpl,
lock_data: &'a mut c_void,
}
impl<'a, T:'a> WriteLockGuard<'a, T> {
#[doc(hidden)]
pub fn lock(data_ptr: &'a mut T, interface: &'a LockImpl, lock_ptr: &'a mut c_void) -> WriteLockGuard<'a, T> {
interface.wlock(lock_ptr).unwrap();
WriteLockGuard {
data: data_ptr,
lock_fn: interface,
lock_data: lock_ptr,
}
}
}
impl<'a, T: 'a> Drop for WriteLockGuard<'a, T> {
fn drop(&mut self) -> () {
self.lock_fn.wunlock(self.lock_data);
}
}
impl<'a, T> Deref for WriteLockGuard<'a, T> {
type Target = &'a mut T;
fn deref(&self) -> &Self::Target { &self.data }
}
impl<'a, T> DerefMut for WriteLockGuard<'a, T> {
fn deref_mut(&mut self) -> &mut &'a mut T {
&mut self.data
}
}
pub struct WriteLockGuardSlice<'a, T: 'a> {
data: &'a mut [T],
lock_fn: &'a LockImpl,
lock_data: &'a mut c_void,
}
impl<'a, T:'a> WriteLockGuardSlice<'a, T> {
#[doc(hidden)]
pub fn lock(data_ptr: &'a mut [T], interface: &'a LockImpl, lock_ptr: &'a mut c_void) -> WriteLockGuardSlice<'a, T> {
interface.wlock(lock_ptr).unwrap();
WriteLockGuardSlice {
data: data_ptr,
lock_fn: interface,
lock_data: lock_ptr,
}
}
}
impl<'a, T: 'a> Drop for WriteLockGuardSlice<'a, T> {
fn drop(&mut self) -> () {
self.lock_fn.wunlock(self.lock_data);
}
}
impl<'a, T> Deref for WriteLockGuardSlice<'a, T> {
type Target = &'a mut [T];
fn deref(&self) -> &Self::Target { &self.data }
}
impl<'a, T> DerefMut for WriteLockGuardSlice<'a, T> {
fn deref_mut(&mut self) -> &mut &'a mut [T] {
&mut self.data
}
}