refine code

go/pserver/cclient/test/main.c

@@ -14,7 +14,6 @@ int main() {
   client c = paddle_new_pserver_client(addr, 1);
 retry:
   if (paddle_begin_init_params(c)) {
-
     paddle_parameter param;
     char name_a[] = "param_a";
     char name_b[] = "param_b";

paddle/trainer/NewRemoteParameterUpdater.cpp

@@ -45,8 +45,8 @@ void NewRemoteParameterUpdater::init(
   }
 
   // init new parameter and gradient.
-  initNewParameter(newParameters_, PARAMETER_VALUE);
-  initNewParameter(newGradients_, PARAMETER_GRADIENT);
+  newParameters_ = initNewParameter(PARAMETER_VALUE);
+  newGradients_ = initNewParameter(PARAMETER_GRADIENT);
 
   // init parameter, one trainer will get the opportunity to int parameter and
   // send them to parameter server. Others will get the initialized parameter
@@ -60,7 +60,7 @@ void NewRemoteParameterUpdater::init(
     LOG(INFO) << "paddle_begin_init_params done";
   } else {
     paddle_get_params(
-        parameterClient_, names_, newParameters_, (int)parameters_.size());
+        parameterClient_, names_, newParameters_, parameterSize());
   }
 
   LOG(INFO) << "NewRemoteParameterUpdater initialized";

paddle/trainer/NewRemoteParameterUpdater.h

@@ -32,9 +32,9 @@ public:
   NewRemoteParameterUpdater(const OptimizationConfig& config,
                             const std::string pserverSpec);
   ~NewRemoteParameterUpdater() {
-    if (newGradients_) {
-      paddle_pserver_client_release(parameterClient_);
-    }
+    releaseNewParameter(newParameters_);
+    releaseNewParameter(newGradients_);
+    if (parameterClient_ >= 0) paddle_pserver_client_release(parameterClient_);
   }
 
   /**
@@ -57,37 +57,49 @@ public:
   virtual void startPass();
   virtual bool finishPass();
 
-  int parameterSize() { return (int)parameters_.size(); }
-
+protected:
   /**
-   * init parameter of paddle pserver cclient.
-   * @param new_paras
-   * @param type
+   * work need to do after finishBatch
    */
-  void initNewParameter(paddle_parameter**& new_paras, ParameterType type) {
-    new_paras =
-        (paddle_parameter**)malloc(sizeof(paddle_parameter*) * parameterSize());
-    for (int i = 0; i < parameterSize(); ++i) {
-      new_paras[i] = (paddle_parameter*)malloc(sizeof(paddle_parameter));
-      memset(new_paras[i], 0, sizeof(paddle_parameter));
+  virtual void updateImpl(Parameter* para);
+
+private:
+    int parameterSize() {
+      return (int)parameters_.size();
     }
 
-    for (int i = 0; i < parameterSize(); ++i) {
-      ParameterPtr para = parameters_[i];
-      new_paras[i]->content_len = 10;
-      new_paras[i]->element_type = PADDLE_ELEMENT_TYPE_FLOAT32;
-      new_paras[i]->name = (char*)para->getName().c_str();
-      new_paras[i]->content =
-          (unsigned char*)(para->getBuf(type).get()->getData());
-      new_paras[i]->content_len = (int)para->getBuf(type).get()->getSize();
+    /**
+     * init parameter of paddle pserver cclient.
+     * @param new_params
+     * @param type
+     */
+    paddle_parameter** initNewParameter(ParameterType type) {
+      paddle_parameter** new_params =
+              (paddle_parameter**)malloc(sizeof(paddle_parameter*) * parameterSize());
+      for (int i = 0; i < parameterSize(); ++i) {
+        new_params[i] = (paddle_parameter*)malloc(sizeof(paddle_parameter));
+        memset(new_params[i], 0, sizeof(paddle_parameter));
+      }
+
+      for (int i = 0; i < parameterSize(); ++i) {
+        ParameterPtr param = parameters_[i];
+        new_params[i]->content_len = 10;
+        new_params[i]->element_type = PADDLE_ELEMENT_TYPE_FLOAT32;
+        new_params[i]->name = (char*)param->getName().c_str();
+        new_params[i]->content =
+                (unsigned char*)(param->getBuf(type).get()->getData());
+        new_params[i]->content_len = (int)param->getBuf(type).get()->getSize();
+      }
+      return new_params;
     }
-  }
 
-protected:
-  /**
-   * work need to do after finishBatch
-   */
-  virtual void updateImpl(Parameter* para);
+    void releaseNewParameter(paddle_parameter** newParams) {
+      if (newParams != NULL) {
+        for (int i = 0; i < parameterSize(); ++i) {
+          paddle_release_param(newParams[i]);
+        }
+      }
+    }
 
 protected:
   /// internal parameter client object for exchanging data with pserver