blob: d8dc1fd78aa1f6e4ff1cbe7d359113c75c95de6f (
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
|
// Copyright 2014 Citra Emulator Project
// Licensed under GPLv2 or any later version
// Refer to the license.txt file included.
#pragma once
#include <queue>
#include <string>
#include "common/common_types.h"
#include "core/hle/kernel/kernel.h"
namespace Kernel {
class Semaphore final : public WaitObject {
public:
/**
* Creates a semaphore.
* @param handle Pointer to the handle of the newly created object
* @param initial_count Number of slots reserved for other threads
* @param max_count Maximum number of slots the semaphore can have
* @param name Optional name of semaphore
* @return The created semaphore
*/
static ResultVal<SharedPtr<Semaphore>> Create(s32 initial_count, s32 max_count,
std::string name = "Unknown");
std::string GetTypeName() const override { return "Semaphore"; }
std::string GetName() const override { return name; }
static const HandleType HANDLE_TYPE = HandleType::Semaphore;
HandleType GetHandleType() const override { return HANDLE_TYPE; }
s32 max_count; ///< Maximum number of simultaneous holders the semaphore can have
s32 available_count; ///< Number of free slots left in the semaphore
std::string name; ///< Name of semaphore (optional)
bool ShouldWait() override;
void Acquire() override;
/**
* Releases a certain number of slots from a semaphore.
* @param release_count The number of slots to release
* @return The number of free slots the semaphore had before this call
*/
ResultVal<s32> Release(s32 release_count);
private:
Semaphore();
~Semaphore() override;
};
} // namespace
|
