port

Author: yingcong-wu

source/loader/layers/sanitizer/asan/asan_ddi.cpp

@@ -29,25 +29,34 @@ ur_result_t setupContext(ur_context_handle_t Context, uint32_t numDevices,
                          const ur_device_handle_t *phDevices) {
   std::shared_ptr<ContextInfo> CI;
   UR_CALL(getAsanInterceptor()->insertContext(Context, CI));
-  for (uint32_t i = 0; i < numDevices; ++i) {
-    auto hDevice = phDevices[i];
-    std::shared_ptr<DeviceInfo> DI;
-    UR_CALL(getAsanInterceptor()->insertDevice(hDevice, DI));
-    DI->Type = GetDeviceType(Context, hDevice);
-    if (DI->Type == DeviceType::UNKNOWN) {
-      getContext()->logger.error("Unsupport device");
-      return UR_RESULT_ERROR_INVALID_DEVICE;
-    }
-    getContext()->logger.info(
-        "DeviceInfo {} (Type={}, IsSupportSharedSystemUSM={})",
-        (void *)DI->Handle, ToString(DI->Type), DI->IsSupportSharedSystemUSM);
-    getContext()->logger.info("Add {} into context {}", (void *)DI->Handle,
-                              (void *)Context);
-    if (!DI->Shadow) {
-      UR_CALL(DI->allocShadowMemory(Context));
+
+  if (numDevices > 0) {
+    auto DeviceType = GetDeviceType(Context, phDevices[0]);
+    auto ShadowMemory =
+        getAsanInterceptor()->getOrCreateShadowMemory(phDevices[0], DeviceType);
+
+    for (uint32_t i = 0; i < numDevices; ++i) {
+      auto hDevice = phDevices[i];
+      std::shared_ptr<DeviceInfo> DI;
+      UR_CALL(getAsanInterceptor()->insertDevice(hDevice, DI));
+      DI->Type = GetDeviceType(Context, hDevice);
+      if (DI->Type == DeviceType::UNKNOWN) {
+        getContext()->logger.error("Unsupport device");
+        return UR_RESULT_ERROR_INVALID_DEVICE;
+      }
+      if (DI->Type != DeviceType) {
+        getContext()->logger.error("Different device type in the same context");
+        return UR_RESULT_ERROR_INVALID_DEVICE;
+      }
+      getContext()->logger.info(
+          "DeviceInfo {} (Type={}, IsSupportSharedSystemUSM={})",
+          (void *)DI->Handle, ToString(DI->Type), DI->IsSupportSharedSystemUSM);
+      getContext()->logger.info("Add {} into context {}", (void *)DI->Handle,
+                                (void *)Context);
+      DI->Shadow = ShadowMemory;
+      CI->DeviceList.emplace_back(hDevice);
+      CI->AllocInfosMap[hDevice];
     }
-    CI->DeviceList.emplace_back(hDevice);
-    CI->AllocInfosMap[hDevice];
   }
   return UR_RESULT_SUCCESS;
 }

source/loader/layers/sanitizer/asan/asan_interceptor.cpp

@@ -36,8 +36,7 @@ AsanInterceptor::~AsanInterceptor() {
   // We must release these objects before releasing adapters, since
   // they may use the adapter in their destructor
   for (const auto &[_, DeviceInfo] : m_DeviceMap) {
-    [[maybe_unused]] auto URes = DeviceInfo->Shadow->Destory();
-    assert(URes == UR_RESULT_SUCCESS);
+    DeviceInfo->Shadow = nullptr;
   }
 
   m_Quarantine = nullptr;
@@ -48,6 +47,11 @@ AsanInterceptor::~AsanInterceptor() {
   // detection depends on it.
   m_AllocationMap.clear();
 
+  for (auto &[_, ShadowManager] : m_ShadowMap) {
+    ShadowManager->Destory();
+    getContext()->urDdiTable.Context.pfnRelease(ShadowManager->Context);
+  }
+
   for (auto Adapter : m_Adapters) {
     getContext()->urDdiTable.Global.pfnAdapterRelease(Adapter);
   }
@@ -303,14 +307,26 @@ ur_result_t AsanInterceptor::postLaunchKernel(ur_kernel_handle_t Kernel,
   return Result;
 }
 
-ur_result_t DeviceInfo::allocShadowMemory(ur_context_handle_t Context) {
-  Shadow = GetShadowMemory(Context, Handle, Type);
-  assert(Shadow && "Failed to get shadow memory");
-  UR_CALL(Shadow->Setup());
-  getContext()->logger.info("ShadowMemory(Global): {} - {}",
-                            (void *)Shadow->ShadowBegin,
-                            (void *)Shadow->ShadowEnd);
-  return UR_RESULT_SUCCESS;
+std::shared_ptr<ShadowMemory>
+AsanInterceptor::getOrCreateShadowMemory(ur_device_handle_t Device,
+                                         DeviceType Type) {
+  if (m_ShadowMap.find(Type) == m_ShadowMap.end()) {
+    std::scoped_lock<ur_shared_mutex> Guard(m_ShadowMapMutex);
+    if (m_ShadowMap.find(Type) == m_ShadowMap.end()) {
+      ur_context_handle_t InternalContext;
+      auto Res = getContext()->urDdiTable.Context.pfnCreate(1, &Device, nullptr,
+                                                            &InternalContext);
+      if (Res != UR_RESULT_SUCCESS) {
+        getContext()->logger.error("Failed to create shadow context");
+        return nullptr;
+      }
+      std::shared_ptr<ContextInfo> CI;
+      insertContext(InternalContext, CI);
+      m_ShadowMap[Type] = GetShadowMemory(InternalContext, Device, Type);
+      m_ShadowMap[Type]->Setup();
+    }
+  }
+  return m_ShadowMap[Type];
 }
 
 /// Each 8 bytes of application memory are mapped into one byte of shadow memory

source/loader/layers/sanitizer/asan/asan_interceptor.hpp

@@ -57,8 +57,6 @@ struct DeviceInfo {
   // Device handles are special and alive in the whole process lifetime,
   // so we needn't retain&release here.
   explicit DeviceInfo(ur_device_handle_t Device) : Handle(Device) {}
-
-  ur_result_t allocShadowMemory(ur_context_handle_t Context);
 };
 
 struct QueueInfo {
@@ -353,6 +351,9 @@ class AsanInterceptor {
 
   bool isNormalExit() { return m_NormalExit; }
 
+  std::shared_ptr<ShadowMemory>
+  getOrCreateShadowMemory(ur_device_handle_t Device, DeviceType Type);
+
 private:
   ur_result_t updateShadowMemory(std::shared_ptr<ContextInfo> &ContextInfo,
                                  std::shared_ptr<DeviceInfo> &DeviceInfo,
@@ -368,9 +369,6 @@ class AsanInterceptor {
                             ur_queue_handle_t Queue, ur_kernel_handle_t Kernel,
                             LaunchInfo &LaunchInfo);
 
-  ur_result_t allocShadowMemory(ur_context_handle_t Context,
-                                std::shared_ptr<DeviceInfo> &DeviceInfo);
-
   ur_result_t registerDeviceGlobals(ur_program_handle_t Program);
   ur_result_t registerSpirKernels(ur_program_handle_t Program);
 
@@ -406,6 +404,9 @@ class AsanInterceptor {
   ur_shared_mutex m_AdaptersMutex;
 
   bool m_NormalExit = true;
+
+  std::unordered_map<DeviceType, std::shared_ptr<ShadowMemory>> m_ShadowMap;
+  ur_shared_mutex m_ShadowMapMutex;
 };
 
 } // namespace asan

source/loader/layers/sanitizer/sanitizer_common/sanitizer_utils.cpp

@@ -156,7 +156,7 @@ DeviceType GetDeviceType(ur_context_handle_t Context,
     // by the value of device USM pointer (see "USM Allocation Range" in
     // asan_shadow.cpp)
     auto Type = DeviceType::UNKNOWN;
-    if (Ptr >> 48 == 0xff00U) {
+    if (((Ptr >> 48) & 0xff00U) == 0xff00U) {
       Type = DeviceType::GPU_PVC;
     } else {
       Type = DeviceType::GPU_DG2;