blob: a657caa0b37d24f6d8f26653da4516ae1ba4452c (
plain)
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
|
/* -------------------------------------------
Copyright (C) 2024-2025, Amlal EL Mahrouss, all rights reserved.
------------------------------------------- */
#pragma once
#include <NewKit/Atom.h>
#include <NewKit/Defines.h>
namespace NeOS
{
enum
{
kLockDone = 200,
kLockTimedOut,
};
/// @brief Lock condition pointer.
typedef Boolean* LockPtr;
/// @brief Locking delegate class, hangs until limit.
/// @tparam N the amount of cycles to wait.
template <SizeT N>
class LockDelegate final
{
public:
LockDelegate() = delete;
public:
explicit LockDelegate(LockPtr expr)
{
auto spin = 0U;
while (spin < N)
{
if (*expr)
{
fLockStatus | kLockDone;
break;
}
++spin;
}
if (spin > N)
fLockStatus | kLockTimedOut;
}
~LockDelegate() = default;
LockDelegate& operator=(const LockDelegate&) = delete;
LockDelegate(const LockDelegate&) = delete;
bool Done()
{
return fLockStatus[kLockDone] == kLockDone;
}
bool HasTimedOut()
{
return fLockStatus[kLockTimedOut] != kLockTimedOut;
}
private:
Atom<UInt> fLockStatus;
};
} // namespace NeOS
|
