From eece03a4bdd268c1902b3fa36686fffc9daa7e39 Mon Sep 17 00:00:00 2001
From: li-tiangang4 <litiangang4@huawei-partners.com>
Date: Wed, 2 Jul 2025 13:45:16 +0800
Subject: [PATCH] =?UTF-8?q?dhardware=E6=8E=A5=E5=85=A5=E6=9C=80=E5=B0=8F?=
 =?UTF-8?q?=E5=AD=90=E7=B3=BB=E7=BB=9F?=
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Content-Type: text/plain; charset=UTF-8
Content-Transfer-Encoding: 8bit

Signed-off-by: li-tiangang4 <litiangang4@huawei-partners.com>
---
 sa_profile/4801.json                                 |  8 ++++++++
 .../include/distributed_hardware_manager_factory.h   |  3 +++
 .../include/distributed_hardware_service.h           |  1 +
 .../src/distributed_hardware_manager_factory.cpp     | 12 ++++++++++++
 .../src/distributed_hardware_service.cpp             | 11 +++++++++++
 5 files changed, 35 insertions(+)

diff --git a/sa_profile/4801.json b/sa_profile/4801.json
index 8651af70..ee14333b 100644
--- a/sa_profile/4801.json
+++ b/sa_profile/4801.json
@@ -13,6 +13,14 @@
                     "name":"usual.event.BOOT_COMPLETED"
                   }
                 ]
+            },
+            "stop-on-demand": {
+                "param": [
+                  {
+                    "name": "resourceschedule.memmgr.low.memory.prepare",
+                    "value": "true"
+                  }
+                ]
             }
         }
     ]
diff --git a/services/distributedhardwarefwkservice/include/distributed_hardware_manager_factory.h b/services/distributedhardwarefwkservice/include/distributed_hardware_manager_factory.h
index f8215111..3eb55577 100644
--- a/services/distributedhardwarefwkservice/include/distributed_hardware_manager_factory.h
+++ b/services/distributedhardwarefwkservice/include/distributed_hardware_manager_factory.h
@@ -42,6 +42,8 @@ public:
     int Dump(const std::vector<std::string> &argsStr, std::string &result);
     void UnInit();
     bool GetUnInitFlag();
+    void SetSAProcessState(bool saState);
+    bool GetSAProcessState();
 private:
     bool Init();
     void CheckExitSAOrNot();
@@ -52,6 +54,7 @@ private:
     std::atomic<bool> flagUnInit_ = false;
     std::atomic<bool> releaseStatus_ = false;
     std::mutex releaseProcessMutex_;
+    std::atomic<bool> isIdle_ = false;
 };
 } // namespace DistributedHardware
 } // namespace OHOS
diff --git a/services/distributedhardwarefwkservice/include/distributed_hardware_service.h b/services/distributedhardwarefwkservice/include/distributed_hardware_service.h
index 840a09fe..72521d74 100644
--- a/services/distributedhardwarefwkservice/include/distributed_hardware_service.h
+++ b/services/distributedhardwarefwkservice/include/distributed_hardware_service.h
@@ -68,6 +68,7 @@ public:
 protected:
     void OnStart() override;
     void OnStop() override;
+    int32_t OnIdle(const SystemAbilityOnDemandReason& idleReason) override;
 
 private:
     bool Init();
diff --git a/services/distributedhardwarefwkservice/src/distributed_hardware_manager_factory.cpp b/services/distributedhardwarefwkservice/src/distributed_hardware_manager_factory.cpp
index cf45d722..ae1f57c3 100644
--- a/services/distributedhardwarefwkservice/src/distributed_hardware_manager_factory.cpp
+++ b/services/distributedhardwarefwkservice/src/distributed_hardware_manager_factory.cpp
@@ -115,6 +115,7 @@ void DistributedHardwareManagerFactory::UnInit()
 void DistributedHardwareManagerFactory::ExitDHFWK()
 {
     DHLOGI("No device online or deviceList is over size, exit sa process");
+    SetSAProcessState(true);
     HiSysEventWriteMsg(DHFWK_EXIT_END, OHOS::HiviewDFX::HiSysEvent::EventType::BEHAVIOR,
         "dhfwk sa exit end.");
     auto systemAbilityMgr = SystemAbilityManagerClient::GetInstance().GetSystemAbilityManager();
@@ -267,5 +268,16 @@ void DistributedHardwareManagerFactory::ClearRemoteDeviceLocalInfoData(const std
 {
     LocalCapabilityInfoManager::GetInstance()->ClearRemoteDeviceLocalInfoData(peeruuid);
 }
+
+void DistributedHardwareManagerFactory::SetSAProcessState(bool saState)
+{
+    DHLOGI("Set SA process state: %{public}d", saState);
+    isIdle_.store(saState);
+}
+ 
+bool DistributedHardwareManagerFactory::GetSAProcessState()
+{
+    return isIdle_.load();
+}
 } // namespace DistributedHardware
 } // namespace OHOS
diff --git a/services/distributedhardwarefwkservice/src/distributed_hardware_service.cpp b/services/distributedhardwarefwkservice/src/distributed_hardware_service.cpp
index bba3c278..0781ac12 100644
--- a/services/distributedhardwarefwkservice/src/distributed_hardware_service.cpp
+++ b/services/distributedhardwarefwkservice/src/distributed_hardware_service.cpp
@@ -51,6 +51,8 @@ namespace DistributedHardware {
 #define DH_LOG_TAG "DistributedHardwareService"
 REGISTER_SYSTEM_ABILITY_BY_ID(DistributedHardwareService, DISTRIBUTED_HARDWARE_SA_ID, true);
 namespace {
+    constexpr int32_t SA_READY_TO_UNLOAD = 0;
+    constexpr int32_t SA_REFUSE_TO_UNLOAD = -1;
     constexpr int32_t INIT_BUSINESS_DELAY_TIME_MS = 5 * 100;
     const std::string INIT_TASK_ID = "CheckAndInitDH";
     const std::string LOCAL_NETWORKID_ALIAS = "local";
@@ -76,6 +78,7 @@ void DistributedHardwareService::OnStart()
         return;
     }
     state_ = ServiceRunningState::STATE_RUNNING;
+    DistributedHardwareManagerFactory::GetInstance().SetSAProcessState(false);
     DHLOGI("DistributedHardwareService::OnStart start service success.");
 }
 
@@ -164,6 +167,14 @@ void DistributedHardwareService::OnStop()
     registerToService_ = false;
 }
 
+int32_t DistributedHardwareService::OnIdle(const SystemAbilityOnDemandReason& idleReason)
+{
+    bool saState = DistributedHardwareManagerFactory::GetInstance().GetSAProcessState();
+    DHLOGI("OnIdle, idleReason name: %{public}s, id: %{public}d, value: %{public}s, sa process state: %{public}d",
+        idleReason.GetName().c_str(), idleReason.GetId(), idleReason.GetValue().c_str(), saState);
+    return saState ? SA_READY_TO_UNLOAD : SA_REFUSE_TO_UNLOAD;
+}
+
 int32_t DistributedHardwareService::RegisterPublisherListener(const DHTopic topic,
     const sptr<IPublisherListener> listener)
 {
-- 
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