add tenant kvcahe hold at SYSSTAT

deps/oblib/src/lib/alloc/alloc_func.cpp

@@ -86,6 +86,16 @@ int64_t get_tenant_memory_hold(const uint64_t tenant_id, const uint64_t ctx_id)
   return bytes;
 }
 
+int64_t get_tenant_cache_hold(uint64_t tenant_id)
+{
+  int64_t bytes = 0;
+  ObMallocAllocator *allocator = ObMallocAllocator::get_instance();
+  if (!OB_ISNULL(allocator)) {
+    bytes = allocator->get_tenant_cache_hold(tenant_id);
+  }
+  return bytes;
+}
+
 int64_t get_tenant_memory_remain(uint64_t tenant_id)
 {
   int64_t bytes = 0;

deps/oblib/src/lib/alloc/alloc_func.h

@@ -36,6 +36,7 @@ void set_tenant_memory_limit(uint64_t tenant_id, int64_t bytes);
 int64_t get_tenant_memory_limit(uint64_t tenant_id);
 int64_t get_tenant_memory_hold(uint64_t tenant_id);
 int64_t get_tenant_memory_hold(const uint64_t tenant_id, const uint64_t ctx_id);
+int64_t get_tenant_cache_hold(uint64_t tenant_id);
 int64_t get_tenant_memory_remain(uint64_t tenant_id);
 void get_tenant_label_memory(
   uint64_t tenant_id, ObLabel &label, common::ObLabelItem &item);

deps/oblib/src/lib/alloc/ob_malloc_allocator.cpp

@@ -440,6 +440,16 @@ int64_t ObMallocAllocator::get_tenant_hold(uint64_t tenant_id)
   return hold;
 }
 
+int64_t ObMallocAllocator::get_tenant_cache_hold(uint64_t tenant_id)
+{
+  int64_t cache_hold = 0;
+  with_resource_handle_invoke(tenant_id, [&cache_hold](ObTenantMemoryMgr *mgr) {
+      cache_hold = mgr->get_cache_hold();
+      return OB_SUCCESS;
+    });
+  return cache_hold;
+}
+
 int64_t ObMallocAllocator::get_tenant_remain(uint64_t tenant_id)
 {
   int64_t remain = 0;

deps/oblib/src/lib/alloc/ob_malloc_allocator.h

@@ -125,6 +125,7 @@ public:
   int set_tenant_limit(uint64_t tenant_id, int64_t bytes);
   int64_t get_tenant_limit(uint64_t tenant_id);
   int64_t get_tenant_hold(uint64_t tenant_id);
+  int64_t get_tenant_cache_hold(uint64_t tenant_id);
   int64_t get_tenant_remain(uint64_t tenant_id);
   int64_t get_tenant_ctx_hold(const uint64_t tenant_id, const uint64_t ctx_id) const;
   void get_tenant_label_usage(uint64_t tenant_id, ObLabel &label, common::ObLabelItem &item) const;

deps/oblib/src/lib/statistic_event/ob_stat_event.h

@@ -548,6 +548,7 @@ STAT_EVENT_SET_DEF(MEMORY_LIMIT, "effective observer memory limit", ObStatClassI
 STAT_EVENT_SET_DEF(SYSTEM_MEMORY, "effective system memory", ObStatClassIds::RESOURCE, 140015, false, true, true)
 STAT_EVENT_SET_DEF(HIDDEN_SYS_MEMORY, "effective hidden sys memory", ObStatClassIds::RESOURCE, 140016, false, true, true)
 STAT_EVENT_SET_DEF(MAX_SESSION_NUM, "max session num", ObStatClassIds::RESOURCE, 140017, false, true, true)
+STAT_EVENT_SET_DEF(KV_CACHE_HOLD, "kvcache hold", ObStatClassIds::RESOURCE, 140018, false, true, true)
 
 //CLOG
 

src/observer/virtual_table/ob_all_virtual_sys_stat.cpp

@@ -208,6 +208,8 @@ int ObAllVirtualSysStat::update_all_stats_(const int64_t tenant_id, ObStatEventS
             = static_cast<int64_t>(cpu_usage * 100);
         stat_events.get(ObStatEventIds::MEMORY_USAGE - ObStatEventIds::STAT_EVENT_ADD_END -1)->stat_value_
             = lib::get_tenant_memory_hold(tenant_id);
+        stat_events.get(ObStatEventIds::KV_CACHE_HOLD - ObStatEventIds::STAT_EVENT_ADD_END -1)->stat_value_
+            = lib::get_tenant_cache_hold(tenant_id);
       } else {
         // it is ok to not have any records
       }