diff --git a/src/operators/math/gemm/cpu_info.h b/src/framework/context.h
similarity index 51%
rename from src/operators/math/gemm/cpu_info.h
rename to src/framework/context.h
index 54975797c782be1964c562f38fd12edbcd6a2f0e..d38e1e3b5625b9151cc0c8c4ec41ce66080dd545 100644
--- a/src/operators/math/gemm/cpu_info.h
+++ b/src/framework/context.h
@@ -14,42 +14,66 @@ limitations under the License. */
 
 #pragma once
 
+#if _OPENMP
+#include <omp.h>
+#endif
+
 #define MOBILE_MAX_CPU_NUM 8
 
 namespace paddle_mobile {
-namespace operators {
-namespace math {
+namespace framework {
 
-struct CPUInfo {
+struct CPUContext {
  private:
-  CPUInfo() {
+  CPUContext() : num_cpus(4), num_threads(1) {
     // TODO(hjchen2)
-    num_cpus = 4;
     for (int i = 0; i < num_cpus; ++i) {
-      cpu_frequency[i] = 2400;      // 2400 MHz
-      max_cpu_frequency[i] = 2400;  // 2400 MHz
+      cpu_frequencies[i] = 2400;      // 2400 MHz
+      max_cpu_frequencies[i] = 2400;  // 2400 MHz
     }
     //    L1_cache = 32000;    // 32K
     L1_cache = 32 * 1024;
     L2_cache = 2000000;  // 2M
                          //    L2_cache = 512000;
   }
-  virtual ~CPUInfo() {}
 
  public:
-  static CPUInfo* Info() {
-    static CPUInfo* ctx = new CPUInfo;
+  void set_num_threads(int threads) {
+#if _ONENMP
+    omp_set_num_threads(threads);
+    if (threads <= omp_get_max_threads()) {
+      num_threads = threads;
+    } else {
+      num_threads = omp_get_max_threads();
+    }
+#endif
+    num_threads = (num_threads > 1) ? num_threads : 1;
+  }
+
+  virtual ~CPUContext() {}
+
+ public:
+  static CPUContext* Context() {
+    static CPUContext* ctx = new CPUContext;
     return ctx;
   }
 
   int num_cpus;
-  int cpu_frequency[MOBILE_MAX_CPU_NUM];
-  int max_cpu_frequency[MOBILE_MAX_CPU_NUM];
+  int num_threads;
+  int cpu_frequencies[MOBILE_MAX_CPU_NUM];
+  int max_cpu_frequencies[MOBILE_MAX_CPU_NUM];
 
   int L1_cache;
   int L2_cache;
 };
 
-}  // namespace math
-}  // namespace operators
+inline void set_global_num_threads(int threads) {
+  CPUContext::Context()->set_num_threads(threads);
+}
+
+inline int get_global_num_threads() {
+  return CPUContext::Context()->num_threads;
+}
+
+}  // namespace framework
 }  // namespace paddle_mobile
diff --git a/src/framework/executor.cpp b/src/framework/executor.cpp
index a2047e845a54305adef6847b632a17c397cd3002..a15c0e6b4e73e6132c5118379dc7ffb5ec75f0a3 100644
--- a/src/framework/executor.cpp
+++ b/src/framework/executor.cpp
@@ -18,6 +18,7 @@ limitations under the License. */
 #include <vector>
 #include "common/enforce.h"
 #include "common/log.h"
+#include "framework/context.h"
 #include "framework/framework.pb-c.h"
 #include "framework/lod_tensor.h"
 #include "framework/operator.h"
@@ -37,6 +38,11 @@ namespace framework {
 
 #pragma mark - executor
 
+template <typename Device, typename T>
+void Executor<Device, T>::SetThreadNum(int threads) {
+  set_global_num_threads(threads);
+}
+
 template <typename Device, typename T>
 Executor<Device, T>::Executor(const Program<Device> &program,
                               paddle_mobile::PaddleMobileConfigInternal config,
@@ -444,6 +450,9 @@ std::shared_ptr<LoDTensor> Executor<Device, T>::GetOutput(
 
 template <typename Device, typename T>
 PMStatus Executor<Device, T>::Predict() {
+#if _OPENMP
+  omp_set_num_threads(get_global_num_threads());
+#endif
 #ifdef PADDLE_MOBILE_PROFILE
   std::vector<ProfInfo> profile(ops_of_block0_.size());
   struct timespec ts;
@@ -654,14 +663,18 @@ void Executor<GPU_CL, float>::InitNoPersistableMemory(
   output->Resize(input_tensor.dims());
   output->mutable_data<float>();
 }
+
 template <>
 void Executor<GPU_CL, float>::SetInput(const Tensor &input,
                                        const std::string &var_name) {
-  auto *target_var = program_.scope->FindVar(var_name);
-  PADDLE_MOBILE_ENFORCE(target_var != nullptr, "Variable %s is not exist",
-                        var_name.c_str());
+  int index = 0;
+  if (feed_indices_.find(var_name) != feed_indices_.end()) {
+    index = feed_indices_.find(var_name)->second;
+  }
+  auto *feed_var = program_.scope->Var("feed");
+  framework::LoDTensor *target_tensor =
+      &(feed_var->template GetMutable<framework::LoDTensorArray>()->at(index));
 
-  auto *target_tensor = target_var->template GetMutable<LoDTensor>();
   DLOG << "config_.load_when_predict   " << config_.load_when_predict;
   DLOG << "target_tensor->IsInitialized() " << target_tensor->IsInitialized();
   DLOG << "target_tensor->dims()   " << target_tensor->dims();
@@ -772,7 +785,7 @@ void Executor<GPU_CL, float>::InitMemory() {
       if (var_desc->Persistable()) {
         CLImage *cl_image = nullptr;
         if (var_desc->Name() == "feed" || var_desc->Name() == "fetch") {
-          var->template GetMutable<LoDTensor>();
+          var->template GetMutable<framework::LoDTensorArray>();
           continue;
         } else {
           cl_image = var->template GetMutable<CLImage>();
@@ -840,7 +853,7 @@ void Executor<GPU_CL, float>::InitCombineMemory() {
       if (var_desc->Persistable()) {
         CLImage *cl_image = nullptr;
         if (var_desc->Name() == "feed" || var_desc->Name() == "fetch") {
-          var->template GetMutable<LoDTensor>();
+          var->template GetMutable<framework::LoDTensorArray>();
           continue;
         } else {
           cl_image = var->template GetMutable<CLImage>();
diff --git a/src/framework/executor.h b/src/framework/executor.h
index 853914c54cb962c570ae2a9751500d3275091499..074bc4179ade271683a5454edf024661732d270d 100644
--- a/src/framework/executor.h
+++ b/src/framework/executor.h
@@ -36,6 +36,8 @@ class Executor {
            paddle_mobile::PaddleMobileConfigInternal config, int batch_size = 1,
            const bool use_optimize = true, const bool lod_mode = false);
 
+  void SetThreadNum(int threads);
+
   PMStatus Predict(const std::vector<std::pair<std::string, Tensor>> &inputs);
   PMStatus Predict(
       const std::vector<std::pair<std::string, LoDTensor>> &inputs);
diff --git a/src/io/paddle_mobile.cpp b/src/io/paddle_mobile.cpp
index 6294f6bf467b1c1684d87c51b9a3b04508d56016..ceab4f4aeec4070327cf9fb46b1dc06ce19cd4a5 100644
--- a/src/io/paddle_mobile.cpp
+++ b/src/io/paddle_mobile.cpp
@@ -28,9 +28,7 @@ namespace paddle_mobile {
 
 template <typename Device, typename T>
 void PaddleMobile<Device, T>::SetThreadNum(int num) {
-#ifdef _OPENMP
-  omp_set_num_threads(num);
-#endif
+  executor_->SetThreadNum(num);
 }
 
 template <typename Device, typename T>
diff --git a/src/operators/kernel/arm/density_prior_box_kernel.cpp b/src/operators/kernel/arm/density_prior_box_kernel.cpp
new file mode 100644
index 0000000000000000000000000000000000000000..54ea9805ae3a25975f9df23fa9888fe4eced3e29
--- /dev/null
+++ b/src/operators/kernel/arm/density_prior_box_kernel.cpp
@@ -0,0 +1,36 @@
+/* Copyright (c) 2018 PaddlePaddle Authors. All Rights Reserved.
+
+Licensed 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. */
+
+#ifdef DENSITY_PRIORBOX_OP
+
+#include "operators/kernel/prior_box_kernel.h"
+
+namespace paddle_mobile {
+namespace operators {
+
+template <>
+bool DensityPriorBoxKernel<CPU, float>::Init(DensityPriorBoxParam<CPU> *param) {
+  return true;
+}
+
+template <>
+void DensityPriorBoxKernel<CPU, float>::Compute(
+    const DensityPriorBoxParam<CPU> &param) {
+  // TODO(hjchen2)
+}
+
+}  // namespace operators
+}  // namespace paddle_mobile
+
+#endif  // DENSITY_PRIORBOX_OP
diff --git a/src/operators/kernel/arm/sequence_pool_kernel.cpp b/src/operators/kernel/arm/sequence_pool_kernel.cpp
index 8326c55515f2c8ab480c9efe96b7d105ed03d495..352158b973050c99555a82c0d0f02c318b7702ac 100644
--- a/src/operators/kernel/arm/sequence_pool_kernel.cpp
+++ b/src/operators/kernel/arm/sequence_pool_kernel.cpp
@@ -21,7 +21,7 @@ limitations under the License. */
 #include "common/types.h"
 #include "operators/kernel/sequence_kernels.h"
 #include "operators/math/pooling.h"
-#if defined(__ARM_NEON__) || defined(__ARM_NEON)
+#ifdef __ARM_NEON__
 #include <arm_neon.h>
 #endif  // __ARM_NEON__
 
@@ -44,7 +44,7 @@ void SequencePoolImpl(const framework::LoDTensor &input,
     if (width == 1) {
       float max = -std::numeric_limits<float>::max();
       int remain_h = height;
-#if defined(__ARM_NEON__) || defined(__ARM_NEON)
+#ifdef __ARM_NEON__
       int loop = remain_h >> 2;
       remain_h = remain_h & 0x3;
       float32x4_t __max4 = math::vPoolInitq_f32<MAX>();
@@ -67,11 +67,11 @@ void SequencePoolImpl(const framework::LoDTensor &input,
       in_ptr += width;
       int remain_h = height - 1;
       int remain_w_start = 0;
-#if defined(__ARM_NEON__) || defined(__ARM_NEON)
+#ifdef __ARM_NEON__
       remain_w_start = width & 0xfffc;
 #endif  // __ARM_NEON__
       for (int h = 0; h < remain_h; ++h) {
-#if defined(__ARM_NEON__) || defined(__ARM_NEON)
+#ifdef __ARM_NEON__
         for (int w = 0; w < width; w += 4) {
           float32x4_t __in = vld1q_f32(in_ptr + w);
           float32x4_t __out = vld1q_f32(out_ptr + w);
@@ -104,7 +104,7 @@ void SequencePoolImpl<SUM, float>(const framework::LoDTensor &input,
     if (width == 1) {
       float sum = 0.f;
       int remain_h = height;
-#if defined(__ARM_NEON__) || defined(__ARM_NEON)
+#ifdef __ARM_NEON__
       int loop = remain_h >> 2;
       remain_h = remain_h & 0x3;
       float32x4_t __sum4 = vdupq_n_f32(0.f);
@@ -126,12 +126,12 @@ void SequencePoolImpl<SUM, float>(const framework::LoDTensor &input,
       in_ptr += width;
       int remain_h = height - 1;
       int remain_w_start = 0;
-#if defined(__ARM_NEON__) || defined(__ARM_NEON)
+#ifdef __ARM_NEON__
       int loop_w = width >> 2;
       remain_w_start = width & 0xfffc;
 #endif  // __ARM_NEON__
       for (int h = 0; h < remain_h; ++h) {
-#if defined(__ARM_NEON__) || defined(__ARM_NEON)
+#ifdef __ARM_NEON__
         for (int w = 0; w < width - 3; w += 4) {
           float32x4_t __in = vld1q_f32(in_ptr + w);
           float32x4_t __out = vld1q_f32(out_ptr + w);
diff --git a/src/operators/kernel/prior_box_kernel.h b/src/operators/kernel/prior_box_kernel.h
index 921d5901a8f24abab61f7aa94663385d91e597a7..2a0f4e8f0155e74b8f6b3d75022c713df26e91c7 100644
--- a/src/operators/kernel/prior_box_kernel.h
+++ b/src/operators/kernel/prior_box_kernel.h
@@ -12,8 +12,6 @@ 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. */
 
-#ifdef PRIORBOX_OP
-
 #pragma once
 
 #include <algorithm>
@@ -26,9 +24,10 @@ limitations under the License. */
 namespace paddle_mobile {
 namespace operators {
 
-inline void ExpandAspectRatios(const std::vector<float>& input_aspect_ratior,
+#ifdef PRIORBOX_OP
+inline void ExpandAspectRatios(const std::vector<float> &input_aspect_ratior,
                                bool flip,
-                               std::vector<float>* output_aspect_ratior) {
+                               std::vector<float> *output_aspect_ratior) {
   constexpr float epsilon = 1e-6;
   output_aspect_ratior->clear();
   output_aspect_ratior->push_back(1.0f);
@@ -50,14 +49,63 @@ inline void ExpandAspectRatios(const std::vector<float>& input_aspect_ratior,
   }
 }
 
-template <typename DeviceType, typename T>
-class PriorBoxKernel
-    : public framework::OpKernelBase<DeviceType, PriorBoxParam<DeviceType>> {
+DECLARE_KERNEL(PriorBox, PriorBoxParam);
+#endif  // PRIORBOX_OP
+
+#ifdef DENSITY_PRIORBOX_OP
+template <typename Dtype>
+class DensityPriorBoxParam : public OpParam {
+  typedef typename DtypeTensorTrait<Dtype>::gtype GType;
+
+ public:
+  DensityPriorBoxParam(const VariableNameMap &inputs,
+                       const VariableNameMap &outputs,
+                       const AttributeMap &attrs, Scope *scope)
+      : OpParam(inputs, outputs, attrs, scope) {
+    input_ = InputFrom<GType>(inputs, *scope);
+    input_image_ = InputImageFrom<GType>(inputs, *scope);
+    output_boxes_ = OutputBoxesFrom<GType>(outputs, *scope);
+    output_variances_ = OutputVariancesFrom<GType>(outputs, *scope);
+    variances_ = GetAttr<vector<float>>("variances", attrs);
+    clip_ = GetAttr<bool>("clip", attrs);
+    flatten_to_2d_ = GetAttr<bool>("flatten_to_2d", attrs);
+    step_w_ = GetAttr<float>("step_w", attrs);
+    step_h_ = GetAttr<float>("step_h", attrs);
+    offset_ = GetAttr<float>("offset", attrs);
+    fixed_sizes_ = GetAttr<vector<float>>("fixed_sizes", attrs);
+    fixed_ratios_ = GetAttr<vector<float>>("fixed_ratios", attrs);
+    densities_ = GetAttr<vector<int>>("densities", attrs);
+  }
+
+  const GType *Input() const { return input_; }
+  const GType *InputImage() const { return input_image_; }
+  GType *OutputBoxes() const { return output_boxes_; }
+  GType *OutputVariances() const { return output_variances_; }
+  const bool Clip() const { return clip_; }
+  const bool FlattenTo2d() const { return flatten_to_2d_; }
+  const float StepW() const { return step_w_; }
+  const float StepH() const { return step_h_; }
+  const float Offset() const { return offset_; }
+  const vector<float> &FixedSizes() const { return fixed_sizes_; }
+  const vector<float> &FixedRatios() const { return fixed_ratios_; }
+  const vector<int> &Densities() const { return densities_; }
+
  public:
-  void Compute(const PriorBoxParam<DeviceType>& param);
-  bool Init(PriorBoxParam<DeviceType>* param);
+  GType *input_;
+  GType *input_image_;
+  GType *output_boxes_ GType *output_variances_;
+  bool clip_;
+  bool flatten_to_2d_;
+  float step_w_;
+  float step_h_;
+  float offset_;
+  vector<float> fixed_sizes_;
+  vector<float> fixed_ratios_;
+  vector<int> densities_;
 };
+
+DECLARE_KERNEL(DensityPriorBox, DensityPriorBoxParam);
+#endif  // DENSITY_PRIORBOX_OP
+
 }  // namespace operators
 }  // namespace paddle_mobile
-
-#endif
diff --git a/src/operators/math/gemm/cblas.cc b/src/operators/math/gemm/cblas.cc
index adc375b62913f0ad1105080f8c26b547e96671f3..058b61f1114c664e8e5ac3ae31f85e4186b9fd8a 100644
--- a/src/operators/math/gemm/cblas.cc
+++ b/src/operators/math/gemm/cblas.cc
@@ -17,7 +17,6 @@ limitations under the License. */
 #pragma once
 
 #include "operators/math/gemm/cblas.h"
-#include "operators/math/gemm/cpu_info.h"
 #include "operators/math/gemm/executor.h"
 #include "operators/math/gemm/strategy.h"
 
diff --git a/src/operators/math/gemm/executor.h b/src/operators/math/gemm/executor.h
index ddbed3dbdf6a5399b0f945d7da98ed536ee5e4e2..ce43dc0257a01be5f6a55cb12d9b2b77f1a31086 100644
--- a/src/operators/math/gemm/executor.h
+++ b/src/operators/math/gemm/executor.h
@@ -19,17 +19,17 @@ limitations under the License. */
 #include <omp.h>
 #endif
 // #include <sys/time.h>
-// #include <iostream>
+#include <iostream>
 #include "common/log.h"
+#include "framework/context.h"
 #include "memory/t_malloc.h"
-#include "operators/math/gemm/cpu_info.h"
 #include "operators/math/gemm/gemm_kernel.h"
 
 namespace paddle_mobile {
 namespace operators {
 namespace math {
 
-static CPUInfo *info = CPUInfo::Info();
+static framework::CPUContext *g_cpu_ctx = framework::CPUContext::Context();
 
 int CeilDiv(const int &x, const int &y) { return (x + y - 1) / y; }
 unsigned int ResetL1Cache(const unsigned int L1_size, const int thread_num,
@@ -70,11 +70,11 @@ class GemmExecutor : public Executor {
     unsigned int L1_size = 0;
     unsigned int L2_size = 0;
     if (M_ > N_) {
-      L2_size = ResetL1Cache(info->L1_cache, num_threads_, M_, K_);
-      L1_size = info->L2_cache;
+      L2_size = ResetL1Cache(g_cpu_ctx->L1_cache, num_threads_, M_, K_);
+      L1_size = g_cpu_ctx->L2_cache;
     } else {
-      L1_size = ResetL1Cache(info->L1_cache, num_threads_, N_, K_);
-      L2_size = info->L2_cache;
+      L1_size = ResetL1Cache(g_cpu_ctx->L1_cache, num_threads_, N_, K_);
+      L2_size = g_cpu_ctx->L2_cache;
     }
 
     rhs_tile_num_ = L1_size / (K_ * sizeof(Itype));
diff --git a/src/operators/prior_box_op.cpp b/src/operators/prior_box_op.cpp
index b2b43f6418e08e56f6b1af0023bc18fc342fb11d..abef57e2bb3809ce280ebb9f1cfce8ef981e5bd5 100644
--- a/src/operators/prior_box_op.cpp
+++ b/src/operators/prior_box_op.cpp
@@ -12,13 +12,13 @@ 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. */
 
-#ifdef PRIORBOX_OP
-
 #include "operators/prior_box_op.h"
 #include <vector>
+
 namespace paddle_mobile {
 namespace operators {
 
+#ifdef PRIORBOX_OP
 template <typename Dtype, typename T>
 void PriorBoxOp<Dtype, T>::InferShape() const {
   auto input_dims = this->param_.Input()->dims();
@@ -44,15 +44,55 @@ void PriorBoxOp<Dtype, T>::InferShape() const {
   this->param_.OutputBoxes()->Resize(framework::make_ddim(dim_vec));
   this->param_.OutputVariances()->Resize(framework::make_ddim(dim_vec));
 }
+#endif  // PRIORBOX_OP
+
+#ifdef DENSITY_PRIORBOX_OP
+template <typename Dtype, typename T>
+void DensityPriorBoxOp<Dtype, T>::InferShape() const {
+  auto input_dims = this->param_.Input()->dims();
+  auto input_image_dims = this->param_.InputImage()->dims();
+
+  auto &fixed_sizes = this->param_.FixedSizes();
+  auto &fixed_ratios = this->param_.FixedRatios();
+  auto &densities = this->param_.Densities();
+  bool flatten = this->param_.FlattenTo2d();
+
+  size_t num_priors = 0;
+  for (size_t i = 0; i < densities.size(); ++i) {
+    num_priors += (fixed_ratios.size()) * (pow(densities[i], 2));
+  }
+  if (!flatten) {
+    std::vector<int64_t> dim_vec(4);
+    dim_vec[0] = input_dims[2];
+    dim_vec[1] = input_dims[3];
+    dim_vec[2] = num_priors;
+    dim_vec[3] = 4;
+    this->param_.OutputBoxes()->Resize(framework::make_ddim(dim_vec));
+    this->param_.OutputVariances()->Resize(framework::make_ddim(dim_vec));
+  } else {
+    int64_t dim0 = input_dims[2] * input_dims[3] * num_priors;
+    this->param_.OutputBoxes()->Resize(framework::make_ddim({dim0, 4}));
+    this->param_.OutputVariances()->Resize(framework::make_ddim({dim0, 4}));
+  }
+}
+#endif  // DENSITY_PRIORBOX_OP
 
 }  // namespace operators
 }  // namespace paddle_mobile
 
 namespace ops = paddle_mobile::operators;
+
 #ifdef PADDLE_MOBILE_CPU
+#ifdef PRIORBOX_OP
 REGISTER_OPERATOR_CPU(prior_box, ops::PriorBoxOp);
-#endif
+#endif  // PRIORBOX_OP
+#ifdef DENSITY_PRIORBOX_OP
+REGISTER_OPERATOR_CPU(density_prior_box, ops::DensityPriorBoxOp);
+#endif  // DENSITY_PRIORBOX_OP
+#endif  // PADDLE_MOBILE_CPU
+
 #ifdef PADDLE_MOBILE_CL
+#ifdef PRIORBOX_OP
 REGISTER_OPERATOR_CL(prior_box, ops::PriorBoxOp);
-#endif
-#endif
+#endif  // PRIORBOX_OP
+#endif  // PADDLE_MOBILE_CL
diff --git a/src/operators/prior_box_op.h b/src/operators/prior_box_op.h
index 67d0cc6865fdc722a0191bc540a4d69c34ebedba..7a3c0466a01bb39131972fe699c66c5aa53f6a54 100644
--- a/src/operators/prior_box_op.h
+++ b/src/operators/prior_box_op.h
@@ -12,12 +12,9 @@ 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. */
 
-#ifdef PRIORBOX_OP
-
 #pragma once
 
 #include <string>
-
 #include "framework/operator.h"
 #include "operators/kernel/prior_box_kernel.h"
 #include "operators/op_param.h"
@@ -25,26 +22,13 @@ limitations under the License. */
 namespace paddle_mobile {
 namespace operators {
 
-using paddle_mobile::framework::Tensor;
-
-template <typename DeviceType, typename T>
-class PriorBoxOp : public framework::OperatorWithKernel<
-                       DeviceType, PriorBoxParam<DeviceType>,
-                       operators::PriorBoxKernel<DeviceType, T>> {
- public:
-  PriorBoxOp(const std::string &type, const VariableNameMap &inputs,
-             const VariableNameMap &outputs,
-             const framework::AttributeMap &attrs, framework::Scope *scope)
-      : framework::OperatorWithKernel<DeviceType, PriorBoxParam<DeviceType>,
-                                      operators::PriorBoxKernel<DeviceType, T>>(
-            type, inputs, outputs, attrs, scope) {}
-
-  void InferShape() const override;
+#ifdef PRIORBOX_OP
+DECLARE_OPERATOR(PriorBox, PriorBoxParam, PriorBoxKernel);
+#endif
 
- protected:
-};
+#ifdef DENSITY_PRIORBOX_OP
+DECLARE_OPERATOR(DensityPriorBox, DensityPriorBoxParam, DensityPriorBoxKernel);
+#endif
 
 }  // namespace operators
 }  // namespace paddle_mobile
-
-#endif