From 30f0c7ff2941ab08edb8cb257eb6cef74be42ec7 Mon Sep 17 00:00:00 2001
From: zhaomingwork <61895407+zhaomingwork@users.noreply.github.com>
Date: 星期四, 10 八月 2023 10:21:01 +0800
Subject: [PATCH] for cpp websocket core dump (#828)

---
 funasr/runtime/websocket/websocket-server-2pass.cpp |  206 ++++++++++++++++++++++++++++-----------------------
 1 files changed, 113 insertions(+), 93 deletions(-)

diff --git a/funasr/runtime/websocket/websocket-server-2pass.cpp b/funasr/runtime/websocket/websocket-server-2pass.cpp
index 7df6341..75312a3 100644
--- a/funasr/runtime/websocket/websocket-server-2pass.cpp
+++ b/funasr/runtime/websocket/websocket-server-2pass.cpp
@@ -54,33 +54,31 @@
 }
 
 nlohmann::json handle_result(FUNASR_RESULT result) {
+  websocketpp::lib::error_code ec;
+  nlohmann::json jsonresult;
+  jsonresult["text"] = "";
 
-    websocketpp::lib::error_code ec;
-    nlohmann::json jsonresult;
-    jsonresult["text"]="";
+  std::string tmp_online_msg = FunASRGetResult(result, 0);
+  if (tmp_online_msg != "") {
+    LOG(INFO) << "online_res :" << tmp_online_msg;
+    jsonresult["text"] = tmp_online_msg;
+    jsonresult["mode"] = "2pass-online";
+  }
+  std::string tmp_tpass_msg = FunASRGetTpassResult(result, 0);
+  if (tmp_tpass_msg != "") {
+    LOG(INFO) << "offline results : " << tmp_tpass_msg;
+    jsonresult["text"] = tmp_tpass_msg;
+    jsonresult["mode"] = "2pass-offline";
+  }
 
-    std::string tmp_online_msg = FunASRGetResult(result, 0);
-    if (tmp_online_msg != "") {
-      LOG(INFO) << "online_res :" << tmp_online_msg;
-      jsonresult["text"] = tmp_online_msg; 
-      jsonresult["mode"] = "2pass-online";
-    }
-    std::string tmp_tpass_msg = FunASRGetTpassResult(result, 0);
-    if (tmp_tpass_msg != "") {
-      LOG(INFO) << "offline results : " << tmp_tpass_msg;
-      jsonresult["text"] = tmp_tpass_msg; 
-      jsonresult["mode"] = "2pass-offline";    
-    }
-
-    return jsonresult;
+  return jsonresult;
 }
 // feed buffer to asr engine for decoder
 void WebSocketServer::do_decoder(
     std::vector<char>& buffer, websocketpp::connection_hdl& hdl,
     nlohmann::json& msg, std::vector<std::vector<std::string>>& punc_cache,
-    websocketpp::lib::mutex& thread_lock, bool& is_final,
-    std::string wav_name, FUNASR_HANDLE& tpass_online_handle) {
- 
+    websocketpp::lib::mutex& thread_lock, bool& is_final, std::string wav_name,
+    FUNASR_HANDLE& tpass_online_handle) {
   // lock for each connection
   scoped_lock guard(thread_lock);
   FUNASR_RESULT Result = nullptr;
@@ -99,30 +97,33 @@
     msg["mode"] = "2pass";
     asr_mode_ = 2;
   }
- 
+
   try {
-    // loop to send chunk_size 800*2 data to asr engine.   TODO: chunk_size need get from client 
+    // loop to send chunk_size 800*2 data to asr engine.   TODO: chunk_size need
+    // get from client
     while (buffer.size() >= 800 * 2) {
-      std::vector<char> subvector = {buffer.begin(),
-                                      buffer.begin() + 800 * 2};
+      std::vector<char> subvector = {buffer.begin(), buffer.begin() + 800 * 2};
       buffer.erase(buffer.begin(), buffer.begin() + 800 * 2);
 
-      try{
-        Result =
-            FunTpassInferBuffer(tpass_handle, tpass_online_handle,
-                                subvector.data(), subvector.size(), punc_cache,
-                                false, msg["audio_fs"], msg["wav_format"], (ASR_TYPE)asr_mode_);
-      }catch (std::exception const &e)
-      {
-          LOG(ERROR)<<e.what();
+      try {
+        if (tpass_online_handle) {
+          Result = FunTpassInferBuffer(tpass_handle, tpass_online_handle,
+                                       subvector.data(), subvector.size(),
+                                       punc_cache, false, msg["audio_fs"],
+                                       msg["wav_format"], (ASR_TYPE)asr_mode_);
+
+        } else {
+          return;
+        }
+      } catch (std::exception const& e) {
+        LOG(ERROR) << e.what();
       }
       if (Result) {
         websocketpp::lib::error_code ec;
-        nlohmann::json jsonresult =
-            handle_result(Result);
+        nlohmann::json jsonresult = handle_result(Result);
         jsonresult["wav_name"] = wav_name;
         jsonresult["is_final"] = false;
-        if(jsonresult["text"] != "") {
+        if (jsonresult["text"] != "") {
           if (is_ssl) {
             wss_server_->send(hdl, jsonresult.dump(),
                               websocketpp::frame::opcode::text, ec);
@@ -133,25 +134,26 @@
         }
         FunASRFreeResult(Result);
       }
-
     }
-    if(is_final){
-
-      try{
-        Result = FunTpassInferBuffer(tpass_handle, tpass_online_handle,
-                                      buffer.data(), buffer.size(), punc_cache,
-                                      is_final, msg["audio_fs"], msg["wav_format"], (ASR_TYPE)asr_mode_);
-      }catch (std::exception const &e)
-      {
-          LOG(ERROR)<<e.what();
+    if (is_final) {
+      try {
+        if (tpass_online_handle) {
+          Result = FunTpassInferBuffer(tpass_handle, tpass_online_handle,
+                                       buffer.data(), buffer.size(), punc_cache,
+                                       is_final, msg["audio_fs"],
+                                       msg["wav_format"], (ASR_TYPE)asr_mode_);
+        } else {
+          return;
+        }
+      } catch (std::exception const& e) {
+        LOG(ERROR) << e.what();
       }
-      for(auto &vec:punc_cache){
+      for (auto& vec : punc_cache) {
         vec.clear();
       }
       if (Result) {
         websocketpp::lib::error_code ec;
-        nlohmann::json jsonresult =
-            handle_result(Result);
+        nlohmann::json jsonresult = handle_result(Result);
         jsonresult["wav_name"] = wav_name;
         jsonresult["is_final"] = true;
         if (is_ssl) {
@@ -179,7 +181,7 @@
                                            // connection
   data_msg->samples = std::make_shared<std::vector<char>>();
   data_msg->thread_lock = new websocketpp::lib::mutex();
- 
+
   data_msg->msg = nlohmann::json::parse("{}");
   data_msg->msg["wav_format"] = "pcm";
   data_msg->msg["audio_fs"] = 16000;
@@ -191,25 +193,37 @@
   // data_msg->tpass_online_handle = tpass_online_handle;
   data_map.emplace(hdl, data_msg);
   LOG(INFO) << "on_open, active connections: " << data_map.size();
- 
+}
+
+void remove_hdl(
+    websocketpp::connection_hdl hdl,
+    std::map<websocketpp::connection_hdl, std::shared_ptr<FUNASR_MESSAGE>,
+             std::owner_less<websocketpp::connection_hdl>>& data_map) {
+  // return;
+  std::shared_ptr<FUNASR_MESSAGE> data_msg = nullptr;
+  auto it_data = data_map.find(hdl);
+  if (it_data != data_map.end()) {
+    data_msg = it_data->second;
+  } else {
+    return;
+  }
+  // scoped_lock guard_decoder(*(data_msg->thread_lock));  //wait for do_decoder
+  // finished and avoid access freed tpass_online_handle
+  unique_lock guard_decoder(*(data_msg->thread_lock));
+  if (data_msg->tpass_online_handle) {
+    LOG(INFO) << "----------------FunTpassOnlineUninit----------------------";
+    FunTpassOnlineUninit(data_msg->tpass_online_handle);
+    data_msg->tpass_online_handle = nullptr;
+  }
+  guard_decoder.unlock();
+  delete data_msg->thread_lock;
+  data_map.erase(hdl);  // remove data vector when  connection is closed
 }
 
 void WebSocketServer::on_close(websocketpp::connection_hdl hdl) {
   scoped_lock guard(m_lock);
-  std::shared_ptr<FUNASR_MESSAGE> data_msg  = nullptr;
-  auto it_data = data_map.find(hdl);
-  if (it_data != data_map.end()) {
-    data_msg  = it_data->second;
-  }
-  else
-  {
-    return;
-  }
-  scoped_lock guard_decoder(*(data_msg->thread_lock));  //wait for do_decoder finished and avoid access freed tpass_online_handle 
-  LOG(INFO) << "----------------FunTpassOnlineUninit----------------------";
-  FunTpassOnlineUninit(data_msg->tpass_online_handle);
-  data_map.erase(hdl);  // remove data vector when  connection is closed
-  LOG(INFO) << "on_close, active connections: "<< data_map.size();
+  remove_hdl(hdl, data_map);
+  LOG(INFO) << "on_close, active connections: " << data_map.size();
 }
 
 // remove closed connection
@@ -234,7 +248,7 @@
     iter++;
   }
   for (auto hdl : to_remove) {
-    data_map.erase(hdl);
+    remove_hdl(hdl, data_map);
     LOG(INFO) << "remove one connection ";
   }
 }
@@ -248,20 +262,23 @@
   auto it_data = data_map.find(hdl);
   if (it_data != data_map.end()) {
     msg_data = it_data->second;
+  } else {
+    lock.unlock();
+    return;
   }
 
   std::shared_ptr<std::vector<char>> sample_data_p = msg_data->samples;
   std::shared_ptr<std::vector<std::vector<std::string>>> punc_cache_p =
       msg_data->punc_cache;
   websocketpp::lib::mutex* thread_lock_p = msg_data->thread_lock;
- 
+
   lock.unlock();
 
   if (sample_data_p == nullptr) {
     LOG(INFO) << "error when fetch sample data vector";
     return;
   }
- 
+
   const std::string& payload = msg->get_payload();  // get msg type
 
   switch (msg->get_opcode()) {
@@ -280,17 +297,19 @@
       if (jsonresult.contains("audio_fs")) {
         msg_data->msg["audio_fs"] = jsonresult["audio_fs"];
       }
-      if (jsonresult.contains("chunk_size")){
-        if(msg_data->tpass_online_handle == NULL){
-          std::vector<int> chunk_size_vec = jsonresult["chunk_size"].get<std::vector<int>>();
-          LOG(INFO) << "----------------FunTpassOnlineInit----------------------";
+      if (jsonresult.contains("chunk_size")) {
+        if (msg_data->tpass_online_handle == NULL) {
+          std::vector<int> chunk_size_vec =
+              jsonresult["chunk_size"].get<std::vector<int>>();
+          LOG(INFO)
+              << "----------------FunTpassOnlineInit----------------------";
           FUNASR_HANDLE tpass_online_handle =
               FunTpassOnlineInit(tpass_handle, chunk_size_vec);
           msg_data->tpass_online_handle = tpass_online_handle;
         }
       }
-      LOG(INFO) << "jsonresult=" << jsonresult << ", msg_data->msg="
-                << msg_data->msg;
+      LOG(INFO) << "jsonresult=" << jsonresult
+                << ", msg_data->msg=" << msg_data->msg;
       if (jsonresult["is_speaking"] == false ||
           jsonresult["is_finished"] == true) {
         LOG(INFO) << "client done";
@@ -311,30 +330,31 @@
       // recived binary data
       const auto* pcm_data = static_cast<const char*>(payload.data());
       int32_t num_samples = payload.size();
- 
+
       if (isonline) {
         sample_data_p->insert(sample_data_p->end(), pcm_data,
                               pcm_data + num_samples);
-        int setpsize = 800 * 2;  // TODO, need get from client 
-		    // if sample_data size > setpsize, we post data to decode
+        int setpsize =
+            800 * 2;  // TODO, need get from client
+                      // if sample_data size > setpsize, we post data to decode
         if (sample_data_p->size() > setpsize) {
-            int chunksize = floor(sample_data_p->size() / setpsize);
-            // make sure the subvector size is an integer multiple of setpsize
-            std::vector<char> subvector = {
-                  sample_data_p->begin(),
-                  sample_data_p->begin() + chunksize * setpsize};
-            // keep remain in sample_data
-            sample_data_p->erase(sample_data_p->begin(),
-                                  sample_data_p->begin() + chunksize * setpsize);
-            // post to decode
-            asio::post(io_decoder_,
-                        std::bind(&WebSocketServer::do_decoder, this,
-                                  std::move(subvector), std::move(hdl),
-                                  std::ref(msg_data->msg),
-                                  std::ref(*(punc_cache_p.get())),
-                                  std::ref(*thread_lock_p), std::move(false),
-                                  msg_data->msg["wav_name"],
-                                  std::ref(msg_data->tpass_online_handle)));
+          int chunksize = floor(sample_data_p->size() / setpsize);
+          // make sure the subvector size is an integer multiple of setpsize
+          std::vector<char> subvector = {
+              sample_data_p->begin(),
+              sample_data_p->begin() + chunksize * setpsize};
+          // keep remain in sample_data
+          sample_data_p->erase(sample_data_p->begin(),
+                               sample_data_p->begin() + chunksize * setpsize);
+          // post to decode
+          asio::post(io_decoder_,
+                     std::bind(&WebSocketServer::do_decoder, this,
+                               std::move(subvector), std::move(hdl),
+                               std::ref(msg_data->msg),
+                               std::ref(*(punc_cache_p.get())),
+                               std::ref(*thread_lock_p), std::move(false),
+                               msg_data->msg["wav_name"],
+                               std::ref(msg_data->tpass_online_handle)));
         }
       } else {
         sample_data_p->insert(sample_data_p->end(), pcm_data,

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