1. ssl增加no_verify_cert开关，可以关闭证书校验；

2. ssl_utils.cc改名为ssl_utils.cpp;
3. 暂时使用tcmalloc接管内存分配；
4. 原work thread选择算法存在bug，暂时改为轮询；
5. FieldStat状态输出暂时改为Field格式，便于观察实时性能，Future的状态输出暂时改为累计值；

vendor/CMakeLists.txt

@@ -29,7 +29,6 @@ set_property(TARGET openssl-ssl-static PROPERTY IMPORTED_LOCATION ${INSTALL_DIR}
 set_property(TARGET openssl-ssl-static PROPERTY INTERFACE_INCLUDE_DIRECTORIES ${INSTALL_DIR}/include)
 
 ### Libevent 2.1.8
-### Use openssl 1.1.1
 ExternalProject_Add(libevent PREFIX libevent
         URL ${CMAKE_CURRENT_SOURCE_DIR}/libevent-2.1.8-stable.tar.gz
         URL_MD5 f3eeaed018542963b7d2416ef1135ecc
@@ -307,4 +306,20 @@ add_library(brotlienc-static STATIC IMPORTED GLOBAL)
 add_dependencies(brotlienc-static brotli)
 set_property(TARGET brotlienc-static PROPERTY IMPORTED_LOCATION ${INSTALL_DIR}/lib64/libbrotlienc-static.a)
 set_property(TARGET brotlienc-static PROPERTY INTERFACE_INCLUDE_DIRECTORIES ${INSTALL_DIR}/include)
-target_link_libraries(brotlienc-static INTERFACE brotlicommon-static)
+target_link_libraries(brotlienc-static INTERFACE brotlicommon-static)
+
+### gperftools
+ExternalProject_Add(gperftools
+        PREFIX gperftools
+        URL ${CMAKE_CURRENT_SOURCE_DIR}/gperftools-2.7.tar.gz
+        URL_MD5 c6a852a817e9160c79bdb2d3101b4601
+        CONFIGURE_COMMAND ./configure --prefix=<INSTALL_DIR> --disable-shared
+        BUILD_IN_SOURCE 1)
+
+ExternalProject_Get_Property(gperftools INSTALL_DIR)
+file(MAKE_DIRECTORY ${INSTALL_DIR}/include)
+
+add_library(gperftools-static STATIC IMPORTED GLOBAL)
+add_dependencies(gperftools-static gperftools)
+set_property(TARGET gperftools-static PROPERTY IMPORTED_LOCATION ${INSTALL_DIR}/lib/libtcmalloc.a)
+set_property(TARGET gperftools-static PROPERTY INTERFACE_INCLUDE_DIRECTORIES ${INSTALL_DIR}/include)