1 /* 2 * Copyright (c) 2025 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 "dfx_dump_catcher_slow_policy.h" 17 18 #include <vector> 19 #include <unistd.h> 20 21 #include "dfx_log.h" 22 #include "dfx_util.h" 23 24 #ifdef LOG_DOMAIN 25 #undef LOG_DOMAIN 26 #define LOG_DOMAIN 0xD002D11 27 #endif 28 29 #ifdef LOG_TAG 30 #undef LOG_TAG 31 #define LOG_TAG "DfxDumpCatcherSlow" 32 #endif 33 34 namespace OHOS { 35 namespace HiviewDFX { 36 37 static const uint64_t DUMP_CATCH_SLOW_PERIOD_MS = 5000; // 5000 : 5s 38 static const int DUMP_CATCH_SLOW_MAX_RECORD_NUM = 50; 39 GetInstance()40DfxDumpCatcherSlowPolicy& DfxDumpCatcherSlowPolicy::GetInstance() 41 { 42 static DfxDumpCatcherSlowPolicy instance; 43 return instance; 44 } 45 IsDumpCatcherInSlowPeriod(pid_t pid)46bool DfxDumpCatcherSlowPolicy::IsDumpCatcherInSlowPeriod(pid_t pid) 47 { 48 std::unique_lock<std::mutex> lck(dumpSlowRecordMtx_); 49 auto it = dumpSlowRecordMap_.find(pid); 50 if (it == dumpSlowRecordMap_.end()) { 51 return false; 52 } 53 54 uint64_t now = GetAbsTimeMilliSeconds(); 55 if (now - it->second > DUMP_CATCH_SLOW_PERIOD_MS) { 56 dumpSlowRecordMap_.erase(pid); 57 return false; 58 } 59 return true; 60 } 61 DumpCatcherSlowRecordAgingClean(uint64_t time)62void DfxDumpCatcherSlowPolicy::DumpCatcherSlowRecordAgingClean(uint64_t time) 63 { 64 for (auto it = dumpSlowRecordMap_.begin(); it != dumpSlowRecordMap_.end();) { 65 if (time - it->second > DUMP_CATCH_SLOW_PERIOD_MS) { 66 it = dumpSlowRecordMap_.erase(it); 67 } else { 68 ++it; 69 } 70 } 71 72 if (dumpSlowRecordMap_.size() >= DUMP_CATCH_SLOW_MAX_RECORD_NUM) { 73 dumpSlowRecordMap_.clear(); 74 } 75 } 76 SetDumpCatcherSlowStat(pid_t pid)77void DfxDumpCatcherSlowPolicy::SetDumpCatcherSlowStat(pid_t pid) 78 { 79 std::unique_lock<std::mutex> lck(dumpSlowRecordMtx_); 80 uint64_t now = GetAbsTimeMilliSeconds(); 81 DumpCatcherSlowRecordAgingClean(now); 82 dumpSlowRecordMap_[pid] = now; 83 } 84 85 } // namespace HiviewDFX 86 } // namespace OHOS 87