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
|
// Copyright 2014 Citra Emulator Project
// Licensed under GPLv2 or any later version
// Refer to the license.txt file included.
#include "common/common_types.h"
#include "core/mem_map.h"
#include "core/hle/hle.h"
#include "core/hle/kernel/address_arbiter.h"
#include "core/hle/kernel/thread.h"
////////////////////////////////////////////////////////////////////////////////////////////////////
// Kernel namespace
namespace Kernel {
ResultVal<SharedPtr<AddressArbiter>> AddressArbiter::Create(std::string name) {
SharedPtr<AddressArbiter> address_arbiter(new AddressArbiter);
// TOOD(yuriks): Don't create Handle (see Thread::Create())
CASCADE_RESULT(auto unused, Kernel::g_handle_table.Create(address_arbiter));
address_arbiter->name = std::move(name);
return MakeResult<SharedPtr<AddressArbiter>>(std::move(address_arbiter));
}
ResultCode AddressArbiter::ArbitrateAddress(ArbitrationType type, VAddr address, s32 value,
u64 nanoseconds) {
switch (type) {
// Signal thread(s) waiting for arbitrate address...
case ArbitrationType::Signal:
// Negative value means resume all threads
if (value < 0) {
ArbitrateAllThreads(address);
} else {
// Resume first N threads
for(int i = 0; i < value; i++)
ArbitrateHighestPriorityThread(address);
}
break;
// Wait current thread (acquire the arbiter)...
case ArbitrationType::WaitIfLessThan:
if ((s32)Memory::Read32(address) <= value) {
Kernel::WaitCurrentThread_ArbitrateAddress(address);
HLE::Reschedule(__func__);
}
break;
case ArbitrationType::WaitIfLessThanWithTimeout:
if ((s32)Memory::Read32(address) <= value) {
Kernel::WaitCurrentThread_ArbitrateAddress(address);
Kernel::WakeThreadAfterDelay(GetCurrentThread(), nanoseconds);
HLE::Reschedule(__func__);
}
break;
case ArbitrationType::DecrementAndWaitIfLessThan:
{
s32 memory_value = Memory::Read32(address) - 1;
Memory::Write32(address, memory_value);
if (memory_value <= value) {
Kernel::WaitCurrentThread_ArbitrateAddress(address);
HLE::Reschedule(__func__);
}
break;
}
case ArbitrationType::DecrementAndWaitIfLessThanWithTimeout:
{
s32 memory_value = Memory::Read32(address) - 1;
Memory::Write32(address, memory_value);
if (memory_value <= value) {
Kernel::WaitCurrentThread_ArbitrateAddress(address);
Kernel::WakeThreadAfterDelay(GetCurrentThread(), nanoseconds);
HLE::Reschedule(__func__);
}
break;
}
default:
LOG_ERROR(Kernel, "unknown type=%d", type);
return ResultCode(ErrorDescription::InvalidEnumValue, ErrorModule::Kernel, ErrorSummary::WrongArgument, ErrorLevel::Usage);
}
return RESULT_SUCCESS;
}
} // namespace Kernel
|
