// Licensed to the Apache Software Foundation (ASF) under one

// or more contributor license agreements.  See the NOTICE file

// distributed with this work for additional information

// regarding copyright ownership.  The ASF licenses this file

// to you under the Apache License, Version 2.0 (the

// "License"); you may not use this file except in compliance

// with the License.  You may obtain a copy of the License at

//

//   http://www.apache.org/licenses/LICENSE-2.0

//

// Unless required by applicable law or agreed to in writing,

// software distributed under the License is distributed on an

// "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY

// KIND, either express or implied.  See the License for the

// specific language governing permissions and limitations

// under the License.

#include "runtime/thread_context.h"

#include "common/signal_handler.h"

#include "runtime/query_context.h"

#include "runtime/runtime_state.h"

namespace doris {

class MemTracker;

void AttachTask::init(const std::shared_ptr<ResourceContext>& rc) {

    ThreadLocalHandle::create_thread_local_if_not_exits();

    signal::set_signal_task_id(rc->task_controller()->task_id());

    thread_context()->attach_task(rc);

}

AttachTask::AttachTask(const std::shared_ptr<ResourceContext>& rc) {

    init(rc);

}

AttachTask::AttachTask(const std::shared_ptr<MemTrackerLimiter>& mem_tracker) {

    // if parameter is `orphan_mem_tracker`, if you do not switch thraed mem tracker afterwards,

    // alloc or free memory from Allocator will fail DCHECK. unless you know for sure that

    // the thread will not alloc or free memory from Allocator later.

    std::shared_ptr<ResourceContext> rc = ResourceContext::create_shared();

    rc->memory_context()->set_mem_tracker(mem_tracker);

    init(rc);

}

AttachTask::AttachTask(RuntimeState* runtime_state) {

    signal::set_signal_is_nereids(runtime_state->is_nereids());

    init(runtime_state->get_query_ctx()->resource_ctx());

}

AttachTask::AttachTask(QueryContext* query_ctx) {

    init(query_ctx->resource_ctx());

}

AttachTask::~AttachTask() {

    signal::set_signal_task_id(TUniqueId());

    thread_context()->detach_task();

    ThreadLocalHandle::del_thread_local_if_count_is_zero();

}

SwitchResourceContext::SwitchResourceContext(const std::shared_ptr<ResourceContext>& rc) {

    DCHECK(rc != nullptr);

    doris::ThreadLocalHandle::create_thread_local_if_not_exits();

    DCHECK(thread_context()->is_attach_task());

    old_resource_ctx_ = thread_context()->resource_ctx();

    if (rc != old_resource_ctx_) {

        signal::set_signal_task_id(rc->task_controller()->task_id());

        thread_context()->resource_ctx_ = rc;

        thread_context()->thread_mem_tracker_mgr->attach_limiter_tracker(

                rc->memory_context()->mem_tracker(), rc->workload_group());

    }

}

SwitchResourceContext::~SwitchResourceContext() {

    if (old_resource_ctx_ != thread_context()->resource_ctx()) {

        DCHECK(old_resource_ctx_ != nullptr);

        signal::set_signal_task_id(old_resource_ctx_->task_controller()->task_id());

        thread_context()->resource_ctx_ = old_resource_ctx_;

        thread_context()->thread_mem_tracker_mgr->detach_limiter_tracker();

    }

    doris::ThreadLocalHandle::del_thread_local_if_count_is_zero();

}

SwitchThreadMemTrackerLimiter::SwitchThreadMemTrackerLimiter(

        const std::shared_ptr<doris::MemTrackerLimiter>& mem_tracker) {

    DCHECK(mem_tracker);

    doris::ThreadLocalHandle::create_thread_local_if_not_exits();

    if (mem_tracker != thread_context()->thread_mem_tracker_mgr->limiter_mem_tracker_sptr()) {

        thread_context()->thread_mem_tracker_mgr->attach_limiter_tracker(mem_tracker);

        is_switched_ = true;

    }

}

SwitchThreadMemTrackerLimiter::~SwitchThreadMemTrackerLimiter() {

    if (is_switched_) {

        thread_context()->thread_mem_tracker_mgr->detach_limiter_tracker();

    }

    doris::ThreadLocalHandle::del_thread_local_if_count_is_zero();

}

AddThreadMemTrackerConsumer::AddThreadMemTrackerConsumer(MemTracker* mem_tracker) {

    ThreadLocalHandle::create_thread_local_if_not_exits();

    if (mem_tracker) {

        _need_pop = thread_context()->thread_mem_tracker_mgr->push_consumer_tracker(mem_tracker);

    }

}

AddThreadMemTrackerConsumer::AddThreadMemTrackerConsumer(

        const std::shared_ptr<MemTracker>& mem_tracker)

        : _mem_tracker(mem_tracker) {

    ThreadLocalHandle::create_thread_local_if_not_exits();

    if (_mem_tracker) {

        _need_pop =

                thread_context()->thread_mem_tracker_mgr->push_consumer_tracker(_mem_tracker.get());

    }

}

AddThreadMemTrackerConsumer::~AddThreadMemTrackerConsumer() {

    if (_need_pop) {

        thread_context()->thread_mem_tracker_mgr->pop_consumer_tracker();

    }

    ThreadLocalHandle::del_thread_local_if_count_is_zero();

}

} // namespace doris