1/*
2 * Copyright (c) 2021-2024 Huawei Device Co., Ltd.
3 * Licensed under the Apache License, Version 2.0 (the "License");
4 * you may not use this file except in compliance with the License.
5 * You may obtain a copy of the License at
6 *
7 *     http://www.apache.org/licenses/LICENSE-2.0
8 *
9 * Unless required by applicable law or agreed to in writing, software
10 * distributed under the License is distributed on an "AS IS" BASIS,
11 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
12 * See the License for the specific language governing permissions and
13 * limitations under the License.
14 */
15
16#include "ecmascript/jobs/micro_job_queue.h"
17
18#include "ecmascript/global_env.h"
19#include "ecmascript/jobs/pending_job.h"
20#include "ecmascript/js_tagged_value-inl.h"
21#include "ecmascript/object_factory.h"
22#include "ecmascript/tagged_queue.h"
23
24namespace panda::ecmascript::job {
25uint32_t MicroJobQueue::GetPromiseQueueSize(JSThread *thread, JSHandle<MicroJobQueue> jobQueue)
26{
27    [[maybe_unused]] EcmaHandleScope handleScope(thread);
28    JSHandle<TaggedQueue> promiseQueue(thread, jobQueue->GetPromiseJobQueue());
29    return promiseQueue->Size();
30}
31
32void MicroJobQueue::EnqueueJob(JSThread *thread, JSHandle<MicroJobQueue> jobQueue, QueueType queueType,
33    const JSHandle<JSFunction> &job, const JSHandle<TaggedArray> &argv)
34{
35    // 1. Assert: Type(queueName) is String and its value is the name of a Job Queue recognized by this implementation.
36    // 2. Assert: job is the name of a Job.
37    // 3. Assert: arguments is a List that has the same number of elements as the number of parameters required by job.
38    // 4. Let callerContext be the running execution context.
39    // 5. Let callerRealm be callerContext’s Realm.
40    ObjectFactory *factory = thread->GetEcmaVM()->GetFactory();
41    [[maybe_unused]] EcmaHandleScope handleScope(thread);
42    JSHandle<PendingJob> pendingJob(factory->NewPendingJob(job, argv));
43    ENQUEUE_JOB_HITRACE(pendingJob, queueType);
44    ENQUEUE_JOB_TRACE(thread, pendingJob);
45
46    if (queueType == QueueType::QUEUE_PROMISE) {
47        JSHandle<TaggedQueue> promiseQueue(thread, jobQueue->GetPromiseJobQueue());
48        TaggedQueue *newPromiseQueue = TaggedQueue::Push(thread, promiseQueue, JSHandle<JSTaggedValue>(pendingJob));
49        jobQueue->SetPromiseJobQueue(thread, JSTaggedValue(newPromiseQueue));
50        LOG_ECMA(VERBOSE) << "EnqueueJob length: " << newPromiseQueue->Size();
51    } else if (queueType == QueueType::QUEUE_SCRIPT) {
52        JSHandle<TaggedQueue> scriptQueue(thread, jobQueue->GetScriptJobQueue());
53        TaggedQueue *newScriptQueue = TaggedQueue::Push(thread, scriptQueue, JSHandle<JSTaggedValue>(pendingJob));
54        jobQueue->SetScriptJobQueue(thread, JSTaggedValue(newScriptQueue));
55    }
56}
57
58void MicroJobQueue::ExecutePendingJob(JSThread *thread, JSHandle<MicroJobQueue> jobQueue)
59{
60    [[maybe_unused]] EcmaHandleScope handleScope(thread);
61    JSMutableHandle<TaggedQueue> promiseQueue(thread, jobQueue->GetPromiseJobQueue());
62    JSMutableHandle<PendingJob> pendingJob(thread, JSTaggedValue::Undefined());
63    while (!promiseQueue->Empty()) {
64        LOG_ECMA(VERBOSE) << "ExecutePendingJob length: " << promiseQueue->Size();
65        pendingJob.Update(promiseQueue->Pop(thread));
66        PendingJob::ExecutePendingJob(pendingJob, thread);
67        if (!thread->IsInConcurrentScope()) {
68            thread->SetTaskInfo(reinterpret_cast<uintptr_t>(nullptr));
69        }
70        if (thread->HasPendingException()) {
71            return;
72        }
73        if (thread->HasTerminated()) {
74            JSHandle<TaggedQueue> emptyQueue(thread->GlobalConstants()->GetHandledEmptyTaggedQueue());
75            jobQueue->SetPromiseJobQueue(thread, emptyQueue);
76            return;
77        }
78        promiseQueue.Update(jobQueue->GetPromiseJobQueue());
79    }
80
81    JSHandle<TaggedQueue> scriptQueue(thread, jobQueue->GetScriptJobQueue());
82    while (!scriptQueue->Empty()) {
83        pendingJob.Update(scriptQueue->Pop(thread));
84        PendingJob::ExecutePendingJob(pendingJob, thread);
85        if (thread->HasPendingException()) {
86            return;
87        }
88    }
89}
90}  // namespace panda::ecmascript::job
91