blob: eb0e6d22ff407156517f47247e0e093b516857bc (
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
70
71
|
//===--- Level Zero Target RTL Implementation -----------------------------===//
//
// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
// See https://llvm.org/LICENSE.txt for license information.
// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
//
//===----------------------------------------------------------------------===//
//
// Thread Level Storage abstraction.
//
//===----------------------------------------------------------------------===//
#ifndef OPENMP_LIBOMPTARGET_PLUGINS_NEXTGEN_LEVEL_ZERO_TLS_H
#define OPENMP_LIBOMPTARGET_PLUGINS_NEXTGEN_LEVEL_ZERO_TLS_H
#include <bitset>
#include "AsyncQueue.h"
#include "L0Memory.h"
#include "L0Trace.h"
#include "PerThreadTable.h"
namespace llvm::omp::target::plugin {
/// All thread-local data used by the Plugin.
class L0ThreadTLSTy {
/// Async info tracking.
static constexpr int32_t PerThreadQueues = 10;
std::bitset<PerThreadQueues> InUseQueues{0};
AsyncQueueTy AsyncQueues[PerThreadQueues];
public:
L0ThreadTLSTy() = default;
L0ThreadTLSTy(const L0ThreadTLSTy &) = delete;
L0ThreadTLSTy(L0ThreadTLSTy &&) = delete;
L0ThreadTLSTy &operator=(const L0ThreadTLSTy &) = delete;
L0ThreadTLSTy &operator=(const L0ThreadTLSTy &&) = delete;
~L0ThreadTLSTy() = default;
AsyncQueueTy *getAsyncQueue() {
AsyncQueueTy *Ret = nullptr;
if (!InUseQueues.all()) {
// there's a free queue in this thread, find it.
for (size_t Queue = 0; Queue < PerThreadQueues; Queue++) {
if (!InUseQueues.test(Queue)) {
InUseQueues.set(Queue);
Ret = &AsyncQueues[Queue];
break;
}
}
assert(Ret && "A queue should have been found!");
}
return Ret;
}
bool releaseAsyncQueue(AsyncQueueTy *Queue) {
if (Queue >= &AsyncQueues[0] && Queue < &AsyncQueues[PerThreadQueues]) {
// it's a local queue
size_t QueueId = Queue - &AsyncQueues[0];
InUseQueues.reset(QueueId);
return true;
}
return false;
}
};
using L0ThreadTblTy = PerThread<L0ThreadTLSTy>;
} // namespace llvm::omp::target::plugin
#endif // OPENMP_LIBOMPTARGET_PLUGINS_NEXTGEN_LEVEL_ZERO_TLS_H
|
