内存优化

module/Local_Server/Data_Source/Data_Source.h

@@ -1,4 +1,5 @@
 #pragma once
+#include <memory_resource>
 #include <string_view>
 #include "Data_Source_Handler.h"
 namespace Psc {
@@ -176,6 +177,9 @@ public:
     virtual asio::awaitable<void> handle_in_loop_coro() {
         co_return;
     }
+    virtual bool discard_input_packet(std::string_view) {
+        return false;
+    }
     Frequency_Limit statistic_fl;
     Psc::JSON statistic_json() {
         Psc::JSON ret = With_Loop_Coro::to_base_json();
@@ -459,19 +463,14 @@ struct Type_Descriptor<Dll_Data_Source_Data> {
 class Dll_Data_Source : public Data_Source {
 public:
     adminive::Managed_Value<Dll_Data_Source_Data> specific;
-    Psc::JSON get_custom_state_json() override {
-        std::lock_guard lock(state_mtx);
-        Psc::JSON ret = Psc::JSON::object();
-        ret.append({"state", state});
-        ret.append({"library_read", read_statistics.to_json()});
-        return ret;
-    }
+    Psc::JSON get_custom_state_json() override;
+    Psc::JSON backlog_state_json() const;
     Psc::Throughput_Statistics read_statistics;
     Dll_Data_Source() {
         type = "Dll_Data_Source";
     }
     ~Dll_Data_Source() override = default;
-    std::vector<std::uint8_t> buffer;
+    std::pmr::vector<std::uint8_t> buffer;
     void from_json(const Psc::JSON* that_json) override {
         Data_Source::from_json(that_json);
         const auto buffer_size = specific.write([&](auto& value) {
@@ -521,7 +520,20 @@ public:
         }
         co_return;
     }
+    bool discard_input_packet(std::string_view packet) override;
     void origin_data_transform_mode_data(std::string& data) override;
+private:
+    static constexpr std::size_t backlog_read_size = 8 * 1024 * 1024;
+    bool drop_mode_ac_for_batch_{};
+    std::atomic_bool backlog_active_{};
+    std::atomic<std::uint64_t> backlog_events_total_{};
+    std::atomic<std::uint64_t> backlog_batches_total_{};
+    std::atomic<std::uint64_t> backlog_raw_bytes_total_{};
+    std::atomic<std::uint64_t> dropped_mode_ac_frames_total_{};
+    std::atomic<std::uint64_t> dropped_mode_ac_bytes_total_{};
+    std::atomic<std::size_t> last_batch_raw_bytes_{};
+    std::atomic<std::size_t> largest_batch_raw_bytes_{};
+    std::atomic<std::size_t> last_read_request_bytes_{};
 };
 class Shared_Memory_Data_Source_Data {
 public: