release 300.0

Author: dolphindb-jffu

.vscode/settings.json

@@ -738,7 +738,7 @@ MessageQueueSP points to a MessageQueue, where user can poll messages from the s
 ###### Example
 
 ```c++
-auto queue = client.subscribe(host, port, tableName);
+auto queue = client.subscribe(host, port, handler, tableName);
 Message msg;
 while(true) {
     if(queue->poll(msg, 1000)) {

README.md

@@ -0,0 +1,31 @@
+#pragma once
+
+#include "Concurrent.h"
+#include "DBConnectionPoolImpl.h"
+
+namespace dolphindb {
+class DBConnection;
+class AsynWorker: public Runnable {
+public:
+    using Task = DBConnectionPoolImpl::Task;
+    AsynWorker(DBConnectionPoolImpl& pool, CountDownLatchSP latch, const SmartPointer<DBConnection>& conn,
+               const SmartPointer<SynchronizedQueue<Task>>& queue, TaskStatusMgmt& status,
+               const string& hostName, int port, const string& userId , const string& password)
+            : pool_(pool), latch_(latch), conn_(conn), queue_(queue),taskStatus_(status),
+              hostName_(hostName), port_(port), userId_(userId), password_(password){}
+protected:
+    virtual void run();
+
+private:
+    DBConnectionPoolImpl& pool_;
+    CountDownLatchSP latch_;
+    SmartPointer<DBConnection> conn_;
+	SmartPointer<SynchronizedQueue<Task>> queue_;
+    TaskStatusMgmt& taskStatus_;
+    const string hostName_;
+    int port_;
+    const string userId_;
+    const string password_;
+};
+
+}

README_CN.md

@@ -1,11 +1,13 @@
 #ifndef BATCHTABLEWRITER_H_
 #define BATCHTABLEWRITER_H_
 
+#include "Exports.h"
 #include "Concurrent.h"
-#include "DolphinDB.h"
-#include "Util.h"
 #include "Types.h"
 #include "Exceptions.h"
+#include "Constant.h"
+#include "Dictionary.h"
+#include "Table.h"
 #include <unordered_map>
 #include <string>
 #include <vector>
@@ -14,26 +16,17 @@
 #include <tuple>
 #include <cassert>
 
-#ifdef _MSC_VER
-	#ifdef _DDBAPIDLL	
-		#define EXPORT_DECL _declspec(dllexport)
-	#else
-		#define EXPORT_DECL __declspec(dllimport)
-	#endif
-#else
-	#define EXPORT_DECL 
-#endif
-
 namespace dolphindb{
 
-class EXPORT_DECL  BatchTableWriter {
+class DBConnection;
+class EXPORT_DECL BatchTableWriter {
 public:
     /**
      * If fail to connect to the specified DolphinDB server, this function throw an exception.
      */
     BatchTableWriter(const std::string& hostName, int port, const std::string& userId, const std::string& password, bool acquireLock=true);
 
-    ~BatchTableWriter();
+    virtual ~BatchTableWriter();
 
     BatchTableWriter(const BatchTableWriter&) = delete;
 

include/AsynWorker.h

@@ -4,7 +4,8 @@
 
 #include "Types.h"
 #include "SysIO.h"
-#include "DolphinDB.h"
+#include "Vector.h"
+
 namespace dolphindb {
 
 class CompressEncoderDecoder;

include/BatchTableWriter.h

@@ -24,17 +24,10 @@
     #include <sys/syscall.h>
 	#include <semaphore.h>
 #endif
+
+#include "Exports.h"
 #include "SmartPointer.h"
 
-#ifdef _MSC_VER
-	#ifdef _DDBAPIDLL	
-		#define EXPORT_DECL _declspec(dllexport)
-	#else
-		#define EXPORT_DECL __declspec(dllimport)
-	#endif
-#else
-	#define EXPORT_DECL 
-#endif
 namespace dolphindb {
 
 class Thread;
@@ -139,7 +132,7 @@ class EXPORT_DECL ConditionalVariable{
 
 
 template<class T>
-class LockGuard{
+class EXPORT_DECL LockGuard{
 public:
 	LockGuard(T* res, bool acquireLock = true):res_(res){
 		if(acquireLock)
@@ -181,7 +174,7 @@ class TryLockGuard{
 };
 
 template<class T>
-class RWLockGuard{
+class EXPORT_DECL RWLockGuard{
 public:
 	RWLockGuard(T* res, bool exclusive, bool acquireLock = true):res_(res), exclusive_(exclusive), acquireLock_(acquireLock){
 		if(res != NULL && acquireLock_){
@@ -429,7 +422,7 @@ class SynchronizedQueue{
 		return true;
 	}
 
-	int size(){
+	std::size_t size(){
 		LockGuard<Mutex> guard(&mutex_);
 		return items_.size();
 	}
@@ -570,7 +563,7 @@ class BlockingQueue {
         : buf_(new T[maxItems]), capacity_(maxItems), batchSize_(1), size_(0), head_(0), tail_(0) {}
     explicit BlockingQueue(size_t maxItems, size_t batchSize)
         : buf_(new T[maxItems]), capacity_(maxItems), batchSize_(batchSize), size_(0), head_(0), tail_(0) {}
-	int size(){
+	std::size_t size(){
 		LockGuard<Mutex> guard(&lock_);
 		return size_;
 	}
@@ -629,9 +622,9 @@ class BlockingQueue {
         }
         if(size_ == 0)
             return false;
-        int n = std::min(batchSize_, size_);
+        std::size_t n = std::min(batchSize_, size_);
         items.resize(n);
-        for(int i = 0; i < n; i++){
+        for(std::size_t i = 0; i < n; i++){
             items[i] = std::move(buf_[head_]);
             buf_[head_] = T();
             head_ = (head_ + 1) % capacity_;