pytorch · cyyever · Aug 17, 2025 · Aug 17, 2025 · Aug 21, 2025 · Aug 22, 2025
diff --git a/libkineto/include/Config.h b/libkineto/include/Config.h
@@ -278,7 +278,7 @@ class Config : public AbstractConfig {
     return profileStartIteration_ - activitiesWarmupIterations_;
   }
 
-  const std::chrono::seconds maxRequestAge() const;
+  static std::chrono::seconds maxRequestAge();
 
   // All VLOG* macros will log if the verbose log level is >=
   // the verbosity specified for the verbose log message.

diff --git a/libkineto/include/libkineto.h b/libkineto/include/libkineto.h
@@ -94,14 +94,15 @@ class LibkinetoApi {
   }
 
   void initProfilerIfRegistered() {
-    static std::once_flag once;
     if (activityProfiler_) {
-      std::call_once(once, [this] {
+      static bool once_flag = [this] {
         if (!activityProfiler_->isInitialized()) {
           activityProfiler_->init();
           initChildActivityProfilers();
         }
-      });
+        return true;
+      }();
+      (void)once_flag;
     }
   }
 

diff --git a/libkineto/src/Config.cpp b/libkineto/src/Config.cpp
@@ -293,7 +293,7 @@ uint8_t Config::createDeviceMask(const string& val) {
   return res;
 }
 
-const seconds Config::maxRequestAge() const {
+seconds Config::maxRequestAge() {
   return kMaxRequestAge;
 }
 

diff --git a/libkineto/src/ConfigLoader.cpp b/libkineto/src/ConfigLoader.cpp
@@ -128,7 +128,7 @@ ConfigLoader& ConfigLoader::instance() {
 
 // return an empty string if polling gets any errors. Otherwise a config string.
 std::string ConfigLoader::readOnDemandConfigFromDaemon(
-    time_point<system_clock> now) {
+    time_point<system_clock> /*now*/) {
   if (!daemonConfigLoader_) {
     return "";
   }
@@ -222,7 +222,7 @@ const char* ConfigLoader::customConfigFileName() {
   return getenv(kConfigFileEnvVar);
 }
 
-const std::string ConfigLoader::getConfString() {
+std::string ConfigLoader::getConfString() {
   return readConfigFromConfigFile(configFileName(), false);
 }
 
@@ -251,7 +251,7 @@ void ConfigLoader::updateBaseConfig() {
 }
 
 void ConfigLoader::configureFromSignal(
-    time_point<system_clock> now,
+    time_point<system_clock> /*now*/,
     Config& config) {
   LOG(INFO) << "Received on-demand profiling signal, " << "reading config from "
             << kOnDemandConfigFile;

diff --git a/libkineto/src/ConfigLoader.h b/libkineto/src/ConfigLoader.h
@@ -35,7 +35,7 @@ class ConfigLoader {
   enum ConfigKind { ActivityProfiler = 0, EventProfiler, NumConfigKinds };
 
   struct ConfigHandler {
-    virtual ~ConfigHandler() {}
+    virtual ~ConfigHandler() = default;
     virtual bool canAcceptConfig() = 0;
     virtual void acceptConfig(const Config& cfg) = 0;
   };
@@ -85,7 +85,7 @@ class ConfigLoader {
     }
   }
 
-  inline std::unique_ptr<Config> getConfigCopy() {
+  std::unique_ptr<Config> getConfigCopy() {
     std::lock_guard<std::mutex> lock(configLock_);
     return config_->clone();
   }
@@ -98,7 +98,7 @@ class ConfigLoader {
   static void setDaemonConfigLoaderFactory(
       std::function<std::unique_ptr<IDaemonConfigLoader>()> factory);
 
-  const std::string getConfString();
+  static std::string getConfString();
 
  private:
   ConfigLoader();

diff --git a/libkineto/src/CuptiActivityApi.cpp b/libkineto/src/CuptiActivityApi.cpp
@@ -27,16 +27,17 @@ namespace KINETO_NAMESPACE {
 constexpr size_t kBufSize(4 * 1024 * 1024);
 
 #ifdef HAS_CUPTI
-inline bool cuptiTearDown_() {
+static inline bool cuptiTearDown_() {
   auto teardown_env = getenv("TEARDOWN_CUPTI");
   return teardown_env != nullptr && strcmp(teardown_env, "1") == 0;
 }
 
-inline bool cuptiLazyInit_() {
+static inline bool cuptiLazyInit_() {
   return cuptiTearDown_() && getenv("DISABLE_CUPTI_LAZY_REINIT") == nullptr;
 }
 
-inline void reenableCuptiCallbacks_(std::shared_ptr<CuptiCallbackApi>& cbapi_) {
+static inline void reenableCuptiCallbacks_(
+    std::shared_ptr<CuptiCallbackApi>& cbapi_) {
   // Re-enable callbacks from the past if they exist.
   LOG(INFO) << "Re-enable previous CUPTI callbacks - Starting";
   VLOG(1) << "  CUPTI subscriber before reinit:"
@@ -234,7 +235,7 @@ int CuptiActivityApi::processActivitiesForBuffer(
 }
 #endif
 
-const std::pair<int, size_t> CuptiActivityApi::processActivities(
+std::pair<int, size_t> CuptiActivityApi::processActivities(
     CuptiActivityBufferMap& buffers,
     const std::function<void(const CUpti_Activity*)>& handler) {
   std::pair<int, size_t> res{0, 0};

diff --git a/libkineto/src/CuptiCallbackApi.cpp b/libkineto/src/CuptiCallbackApi.cpp
@@ -185,7 +185,7 @@ void CuptiCallbackApi::initCallbackApi() {
 CuptiCallbackApi::CallbackList* CuptiCallbackApi::CallbackTable::lookup(
     CUpti_CallbackDomain domain,
     CuptiCallBackID cbid) {
-  size_t idx;
+  size_t idx = 0;
 
   switch (domain) {
     case CUPTI_CB_DOMAIN_RESOURCE:

diff --git a/libkineto/src/CuptiRangeProfilerApi.cpp b/libkineto/src/CuptiRangeProfilerApi.cpp
@@ -759,7 +759,7 @@ void CuptiRBProfilerSession::asyncStartAndEnable(
     CUpti_ProfilerRange /*profilerRange*/,
     CUpti_ProfilerReplayMode /*profilerReplayMode*/) {}
 void CuptiRBProfilerSession::asyncDisableAndStop() {}
-CuptiProfilerResult CuptiRBProfilerSession::evaluateMetrics(bool verbose) {
+CuptiProfilerResult CuptiRBProfilerSession::evaluateMetrics(bool /*verbose*/) {
   static CuptiProfilerResult res;
   return res;
 };

diff --git a/libkineto/src/DeviceProperties.cpp b/libkineto/src/DeviceProperties.cpp
@@ -40,7 +40,7 @@ namespace KINETO_NAMESPACE {
 #if defined(HAS_CUPTI) || defined(HAS_ROCTRACER)
 static const std::vector<gpuDeviceProp> createDeviceProps() {
   std::vector<gpuDeviceProp> props;
-  int device_count;
+  int device_count = 0;
   gpuError_t error_id = gpuGetDeviceCount(&device_count);
   // Return empty vector if error.
   if (error_id != gpuSuccess) {

diff --git a/libkineto/src/DeviceUtil.cpp b/libkineto/src/DeviceUtil.cpp
@@ -8,39 +8,36 @@
 
 #include "DeviceUtil.h"
 
-#include <mutex>
-
 namespace KINETO_NAMESPACE {
 
-bool amdGpuAvailable = false;
-bool cudaGpuAvailable = false;
-
 bool isAMDGpuAvailable() {
 #ifdef HAS_ROCTRACER
-  static std::once_flag once;
-  std::call_once(once, [] {
+  static bool amdGpuAvailable = [] {
     // determine AMD GPU availability on the system
     hipError_t error;
     int deviceCount;
     error = hipGetDeviceCount(&deviceCount);
-    amdGpuAvailable = (error == hipSuccess && deviceCount > 0);
-  });
-#endif
+    return (error == hipSuccess && deviceCount > 0);
+  }();
   return amdGpuAvailable;
+#else
+  return false;
+#endif
 }
 
 bool isCUDAGpuAvailable() {
 #ifdef HAS_CUPTI
-  static std::once_flag once;
-  std::call_once(once, [] {
+  static bool cudaGpuAvailable = [] {
     // determine CUDA GPU availability on the system
     cudaError_t error;
-    int deviceCount;
+    int deviceCount = 0;
     error = cudaGetDeviceCount(&deviceCount);
-    cudaGpuAvailable = (error == cudaSuccess && deviceCount > 0);
-  });
-#endif
+    return (error == cudaSuccess && deviceCount > 0);
+  }();
   return cudaGpuAvailable;
+#else
+  return false;
+#endif
 }
 
 bool isGpuAvailable() {

diff --git a/libkineto/src/IpcFabricConfigClient.cpp b/libkineto/src/IpcFabricConfigClient.cpp
@@ -21,7 +21,7 @@
 namespace KINETO_NAMESPACE {
 
 namespace uuid {
-std::string generate_uuid_v4() {
+static std::string generate_uuid_v4() {
   static std::random_device rd;
   static std::mt19937 gen(rd());
   static std::uniform_int_distribution<> dis(0, 15);

diff --git a/libkineto/src/init.cpp b/libkineto/src/init.cpp
@@ -48,7 +48,7 @@ static void initProfilers() {
 #endif // __linux__ || defined(HAS_CUPTI)
 
 #ifdef HAS_CUPTI
-bool enableEventProfiler() {
+static bool enableEventProfiler() {
   if (getenv("KINETO_ENABLE_EVENT_PROFILER") != nullptr) {
     return true;
   } else {
@@ -81,7 +81,7 @@ static bool shouldPreloadCuptiInstrumentation() {
 #endif
 }
 
-bool setupCuptiInitCallback(bool logOnError) {
+static bool setupCuptiInitCallback(bool logOnError) {
   // libcupti will be lazily loaded on this call.
   // If it is not available (e.g. CUDA is not installed),
   // then this call will return an error and we just abort init.

diff --git a/libkineto/src/output_csv.cpp b/libkineto/src/output_csv.cpp
@@ -45,7 +45,7 @@ void EventCSVLogger::update(const Config& config) {
 void EventCSVLogger::handleSample(
     int device,
     const Sample& sample,
-    bool from_new_version) {
+    bool /*from_new_version*/) {
   using namespace std::chrono;
   if (out_) {
     auto now = system_clock::now();

diff --git a/libkineto/src/output_json.cpp b/libkineto/src/output_json.cpp
@@ -60,7 +60,7 @@ ChromeTraceBaseTime& ChromeTraceBaseTime::singleton() {
 // while a double can only represent 15-16 digits. By using relative time,
 // other applications can accurately read the 'ts' field as a double.
 // Use the program loading time as the baseline time.
-inline int64_t transToRelativeTime(int64_t time) {
+static inline int64_t transToRelativeTime(int64_t time) {
   // Sometimes after converting to relative time, it can be a few nanoseconds
   // negative. Since Chrome trace and json processing will throw a parser error,
   // guard this.

diff --git a/libkineto/test/CuptiCallbackApiTest.cpp b/libkineto/test/CuptiCallbackApiTest.cpp
@@ -19,9 +19,9 @@ using namespace libkineto;
 
 const size_t some_data = 42;
 
-std::atomic<int> simple_cb_calls = 0;
+static std::atomic<int> simple_cb_calls = 0;
 
-void simple_cudaLaunchKernel_cb(
+static void simple_cudaLaunchKernel_cb(
     CUpti_CallbackDomain domain,
     CUpti_CallbackId cbid,
     const CUpti_CallbackData* cbInfo) {
@@ -35,7 +35,7 @@ void simple_cudaLaunchKernel_cb(
   simple_cb_calls++;
 }
 
-void simple_cudaLaunchKernelExC_cb(
+static void simple_cudaLaunchKernelExC_cb(
     CUpti_CallbackDomain domain,
     CUpti_CallbackId cbid,
     const CUpti_CallbackData* cbInfo) {
@@ -49,7 +49,7 @@ void simple_cudaLaunchKernelExC_cb(
   simple_cb_calls++;
 }
 
-void atomic_cb(
+static void atomic_cb(
     CUpti_CallbackDomain /*domain*/,
     CUpti_CallbackId /*cbid*/,
     const CUpti_CallbackData* /*cbInfo)*/) {
@@ -60,7 +60,7 @@ void atomic_cb(
   }
 }
 
-void empty_cb(
+static void empty_cb(
     CUpti_CallbackDomain /*domain*/,
     CUpti_CallbackId /*cbid*/,
     const CUpti_CallbackData* /*cbInfo*/) {}

diff --git a/libkineto/test/CuptiRangeProfilerConfigTest.cpp b/libkineto/test/CuptiRangeProfilerConfigTest.cpp
@@ -61,7 +61,7 @@ TEST_F(CuptiRangeProfilerConfigTest, RangesDefaults) {
 
   cfg_auto.setClientDefaults();
 
-  int user_ranges, auto_ranges;
+  int user_ranges = 0, auto_ranges = 0;
 
   user_ranges = CuptiRangeProfilerConfig::get(cfg).cuptiProfilerMaxRanges();
   auto_ranges =

diff --git a/libkineto/test/EventProfilerTest.cpp b/libkineto/test/EventProfilerTest.cpp
@@ -316,8 +316,8 @@ class EventProfilerTest : public ::testing::Test {
         loggers_,
         onDemandLoggers_);
 
-    for (int i = 0; i < kEventGroupCount; i++) {
-      eventGroups_[i] = &eventGroups_[i];
+    for (auto& eventGroup : eventGroups_) {
+      eventGroup = &eventGroup;
     }
     for (int i = 0; i < kGroupSetCount; i++) {
       // Default size to 1 but can be changed by test
@@ -532,10 +532,10 @@ TEST_F(EventProfilerTest, ReportSample) {
 
   EXPECT_CALL(*cuptiEvents_, readEvent(_, _, _))
       .Times(6)
-      .WillRepeatedly(Invoke(
-          [](CUpti_EventGroup g, CUpti_EventID id, std::vector<int64_t>& vals) {
-            vals = {1, 2, 3, 4};
-          }));
+      .WillRepeatedly(
+          Invoke([](CUpti_EventGroup /*g*/,
+                    CUpti_EventID /*id*/,
+                    std::vector<int64_t>& vals) { vals = {1, 2, 3, 4}; }));
 
   // Need to collect four times - twice for each group set
   profiler_->collectSample();
@@ -557,9 +557,9 @@ TEST_F(EventProfilerTest, ReportSample) {
   auto& logger = dynamic_cast<MockLogger&>(*loggers_[0]);
   EXPECT_CALL(logger, handleSample(0, _, _))
       .Times(1)
-      .WillOnce(Invoke([](int device,
+      .WillOnce(Invoke([](int /*device*/,
                           const Sample& sample,
-                          bool from_new_version) {
+                          bool /*from_new_version*/) {
         // Sample will include all stats - logger must pick the
         // ones it wants.
         EXPECT_EQ(sample.stats.size(), 4);

diff --git a/libkineto/test/LoggerObserverTest.cpp b/libkineto/test/LoggerObserverTest.cpp
@@ -54,7 +54,7 @@ TEST(LoggerObserverTest, SingleCollectorObserver) {
 
 // Writes NUM_OF_MESSAGES_FOR_EACH_TYPE messages for each INFO, WARNING, and
 // ERROR.
-void* writeSeveralMessages() {
+static void* writeSeveralMessages() {
   for (int i = 0; i < NUM_OF_MESSAGES_FOR_EACH_TYPE; i++) {
     LOG(INFO) << InfoTestStr;
     LOG(WARNING) << WarningTestStr;