增加jemalloc工具类, 增加jemalloc内存统计分析 (#2885)

增加jemalloc工具类, 增加jemalloc内存统计分析

server/System.cpp

@@ -22,10 +22,11 @@
 #include <map>
 #include <iostream>
 
+#include "Common/JemallocUtil.h"
+#include "Common/macros.h"
+#include "System.h"
 #include "Util/logger.h"
 #include "Util/uv_errno.h"
-#include "System.h"
-#include "Common/macros.h"
 
 using namespace std;
 using namespace toolkit;
@@ -55,6 +56,16 @@ string System::execute(const string &cmd) {
 
 static constexpr int MAX_STACK_FRAMES = 128;
 
+static void save_jemalloc_stats() {
+    string jemalloc_status = JemallocUtil::get_malloc_stats();
+    if (jemalloc_status.empty()) {
+        return;
+    }
+    ofstream out(StrPrinter << exeDir() << "/jemalloc.json", ios::out | ios::binary | ios::trunc);
+    out << jemalloc_status;
+    out.flush();
+}
+
 static void sig_crash(int sig) {
     signal(sig, SIG_DFL);
     void *array[MAX_STACK_FRAMES];
@@ -149,6 +160,12 @@ void System::startDaemon(bool &kill_parent_if_failed) {
 }
 
 void System::systemSetup(){
+
+#ifdef ENABLE_JEMALLOC_DUMP
+    //Save memory report when program exits
+    atexit(save_jemalloc_stats);
+#endif //ENABLE_JEMALLOC_DUMP
+
 #if !defined(_WIN32)
     struct rlimit rlim,rlim_new;
     if (getrlimit(RLIMIT_CORE, &rlim)==0) {