6 files changed, 20 insertions, 19 deletions

diff --git a/src/bp_sim.cpp b/src/bp_sim.cpp
index be9de21e..cb70c572 100755
--- a/src/bp_sim.cpp
+++ b/src/bp_sim.cpp
@@ -504,8 +504,7 @@ void CRteMemPool::add_to_json(Json::Value &json, std::string name, rte_mempool_t
 }
 
 
-Json::Value CRteMemPool::dump_as_json(){
-    Json::Value json;
+void CRteMemPool::dump_as_json(Json::Value &json){
     add_to_json(json, "64b", m_small_mbuf_pool);
     add_to_json(json, "128b", m_mbuf_pool_128);
     add_to_json(json, "256b", m_mbuf_pool_256);
@@ -514,7 +513,6 @@ Json::Value CRteMemPool::dump_as_json(){
     add_to_json(json, "2048b", m_mbuf_pool_2048);
     add_to_json(json, "4096b", m_mbuf_pool_4096);
     add_to_json(json, "9kb", m_mbuf_pool_9k);
-    return (json);
 }
 
 
@@ -534,21 +532,21 @@ void CRteMemPool::dump(FILE *fd){
 
 ////////////////////////////////////////
 
-Json::Value CGlobalInfo::dump_pool_as_json(void){
-    Json::Value json;
+void CGlobalInfo::dump_pool_as_json(Json::Value &json){
     CPlatformSocketInfo * lpSocket =&m_socket;
 
     for (int i=0; i<(int)MAX_SOCKETS_SUPPORTED; i++) {
         if (lpSocket->is_sockets_enable((socket_id_t)i)) {
             std::string socket_id = "cpu-socket-" + std::to_string(i);
-            json["mbuf_stats"][socket_id] = m_mem_pool[i].dump_as_json();
+            m_mem_pool[i].dump_as_json(json["mbuf_stats"][socket_id]);
         }
     }
-    return json;
 }
 
 std::string CGlobalInfo::dump_pool_as_json_str(void){
-    return ("\"mbuf_stats\":" + dump_pool_as_json().toStyledString() + ",");
+    Json::Value json;
+    dump_pool_as_json(json);
+    return (json.toStyledString());
 }
 
 void CGlobalInfo::free_pools(){
diff --git a/src/bp_sim.h b/src/bp_sim.h
index 8aead5f1..5d25506d 100755
--- a/src/bp_sim.h
+++ b/src/bp_sim.h
@@ -1149,7 +1149,7 @@ public:
 
     void dump_in_case_of_error(FILE *fd);
 
-    Json::Value dump_as_json();
+    void dump_as_json(Json::Value &json);
 
 private:
     void add_to_json(Json::Value &json, std::string name, rte_mempool_t * pool);
@@ -1246,7 +1246,7 @@ public:
     }
 
 
-    static Json::Value dump_pool_as_json(void);
+    static void dump_pool_as_json(Json::Value &json);
     static std::string dump_pool_as_json_str(void);
 
 
diff --git a/src/main_dpdk.cpp b/src/main_dpdk.cpp
index 94679d72..75da27ca 100644
--- a/src/main_dpdk.cpp
+++ b/src/main_dpdk.cpp
@@ -5703,15 +5703,17 @@ int TrexDpdkPlatformApi::get_active_pgids(flow_stat_active_t &result) const {
 }
 
 int TrexDpdkPlatformApi::get_cpu_util_full(cpu_util_full_t &cpu_util_full) const {
+    static cpu_vct_t cpu_vct;
     for (int thread_id=0; thread_id<(int)g_trex.m_fl.m_threads_info.size(); thread_id++) {
         CFlowGenListPerThread * lp=g_trex.m_fl.m_threads_info[thread_id];
-        cpu_util_full.push_back(lp->m_cpu_cp_u.GetHistory());
+        cpu_util_full.push_back(cpu_vct);
+        lp->m_cpu_cp_u.GetHistory(cpu_util_full.back());
     }
     return 0;
 }
 
 int TrexDpdkPlatformApi::get_mbuf_util(Json::Value &mbuf_pool) const {
-    mbuf_pool = CGlobalInfo::dump_pool_as_json();
+    CGlobalInfo::dump_pool_as_json(mbuf_pool);
     return 0;
 }
 
diff --git a/src/trex_defs.h b/src/trex_defs.h
index 62024fa8..bbf3f3ba 100644
--- a/src/trex_defs.h
+++ b/src/trex_defs.h
@@ -15,6 +15,7 @@ limitations under the License.
 */
 #include <set>
 #include <queue>
+#include <vector>
 
 #ifndef __TREX_DEFS_H__
 #define __TREX_DEFS_H__
@@ -38,5 +39,6 @@ limitations under the License.
 typedef std::set<uint32_t> flow_stat_active_t;
 typedef std::set<uint32_t>::iterator flow_stat_active_it_t;
 typedef std::vector<std::vector<uint8_t>> cpu_util_full_t;
+typedef std::vector<uint8_t> cpu_vct_t;
 
 #endif
diff --git a/src/utl_cpuu.cpp b/src/utl_cpuu.cpp
index 1191eb74..7786356e 100755
--- a/src/utl_cpuu.cpp
+++ b/src/utl_cpuu.cpp
@@ -61,13 +61,12 @@ uint8_t CCpuUtlCp::GetValRaw(){
     return (m_cpu_util[m_history_latest_index]);
 }
 
-/* return cpu % utilization history */
-std::vector<uint8_t> CCpuUtlCp::GetHistory(){
-    std::vector<uint8_t> history_vect;
+/* get cpu % utilization history */
+void CCpuUtlCp::GetHistory(cpu_vct_t &cpu_vct){
+    cpu_vct.clear();
     for (int i = m_history_latest_index + m_history_size; i > m_history_latest_index; i--) {
-        history_vect.insert(history_vect.begin(), m_cpu_util[i % m_history_size]);
+        cpu_vct.push_back(m_cpu_util[i % m_history_size]);
     }
-    return (history_vect);
 }
 
 /* save last CPU % util in history */
diff --git a/src/utl_cpuu.h b/src/utl_cpuu.h
index ad4b2e3b..109fff4f 100755
--- a/src/utl_cpuu.h
+++ b/src/utl_cpuu.h
@@ -22,8 +22,8 @@ limitations under the License.
 */
 
 #include <stdint.h>
-#include <vector>
 #include <cstring>
+#include "trex_defs.h"
 #include "os_time.h"
 #include "mbuf.h"
 
@@ -59,7 +59,7 @@ public:
     /* return cpu % */
     double GetVal();
     uint8_t GetValRaw();
-    std::vector<uint8_t> GetHistory();
+    void GetHistory(cpu_vct_t &cpu_vct);
 private:
     void AppendHistory(uint8_t);
     CCpuUtlDp *         m_dpcpu;