still reachable in loss record

[caoniaocoder414]

Describe the bug (描述bug)

#include <iostream>
#include <gflags/gflags.h>
#include <butil/logging.h>
#include <butil/time.h>
#include <brpc/channel.h>
#include "netcvm.pb.h"
using namespace std;

DEFINE_string(attachment, "", "Carry this along with requests");
DEFINE_string(protocol, "baidu_std", "Protocol type. Defined in src/brpc/options.proto");
DEFINE_string(connection_type, "", "Connection type. Available values: single, pooled, short");
DEFINE_string(server, "127.0.0.1:2365", "IP Address of server");
DEFINE_string(load_balancer, "", "The algorithm for load balancing");
DEFINE_int32(timeout_ms, 100, "RPC timeout in milliseconds");
DEFINE_int32(max_retry, 3, "Max retries(not including the first RPC)"); 
DEFINE_int32(interval_ms, 1000, "Milliseconds between consecutive requests");

void OLResponse(brpc::Controller* cntl, netcvm::OnlineResponse* response)
{
    std::unique_ptr<brpc::Controller> cntl_guard(cntl);
    std::unique_ptr<netcvm::OnlineResponse> response_guard(response);

    printf("Agent online!\n");
    if (cntl->Failed()) {
        printf("cntl failed\n");
        return;
    }

    if(response->code() != 0 ) {
        printf("Agent register failed!\n");
    }

    printf("code:%d\n",response->code());
}


int main()
{
    // A Channel represents a communication line to a Server. Notice that 
    // Channel is thread-safe and can be shared by all threads in your program.
    brpc::Channel channel;
    
    // Initialize the channel, NULL means using default options.
    brpc::ChannelOptions options;
    options.protocol = FLAGS_protocol;
    options.connection_type = FLAGS_connection_type;
    options.timeout_ms = FLAGS_timeout_ms/*milliseconds*/;
    options.max_retry = FLAGS_max_retry;
    if (channel.Init("10.80.81.107:8998",  &options) != 0) {
        LOG(ERROR) << "Fail to initialize channel";
        printf("init failed!\n");
        return -1;
    }
    printf("init success\n");
    netcvm::cvm_data_service_Stub stub(&channel);
    netcvm::OnlineRequest request;
    request.set_agentserial("aaa");
    request.set_paramstr("aaa");

    netcvm::OnlineResponse response;
    brpc::Controller cntl ;

    netcvm::OnlineResponse *newresponse = new (std::nothrow) netcvm::OnlineResponse();
    brpc::Controller *newcntl = new (std::nothrow) brpc::Controller();

    google::protobuf::Closure *done = brpc::NewCallback(&OLResponse, newcntl, newresponse);
    if(done == NULL){
        printf("online google::protobuf::Closure malloc failed!\n");
        return -1;
    }
    stub.Online(&cntl, &request, &response, done);
    sleep(2);
    
    return 0;
}

使用 valgrind 检查发现 65,792 bytes in 4 blocks are still reachable in loss record 1,424 of 1,449
==00:00:24:07.934 26429== 65,792 bytes in 4 blocks are still reachable in loss record 1,424 of 1,449
==00:00:24:07.934 26429== at 0x4C2A7E6: operator new(unsigned long, std::nothrow_t const&) (vg_replace_malloc.c:387)
==00:00:24:07.934 26429== by 0x6145500: add_block (resource_pool_inl.h:387)
==00:00:24:07.934 26429== by 0x6145500: get (resource_pool_inl.h:210)
==00:00:24:07.934 26429== by 0x6145500: get_resource (resource_pool_inl.h:283)
==00:00:24:07.934 26429== by 0x6145500: get_resourcebthread::TimerThread::Task (resource_pool.h:97)
==00:00:24:07.934 26429== by 0x6145500: bthread::TimerThread::Bucket::schedule(void ()(void), void*, timespec const&) (timer_thread.cpp:187)
==00:00:24:07.934 26429== by 0x6145876: bthread::TimerThread::schedule(void ()(void), void*, timespec const&) (timer_thread.cpp:226)
==00:00:24:07.934 26429== by 0x6148DC1: bthread_timer_add (bthread.cpp:335)
==00:00:24:07.934 26429== by 0x621F58B: brpc::Channel::CallMethod(google::protobuf::MethodDescriptor const*, google::protobuf::RpcController*, google::protobuf::Message const*, google::protobuf::Message*, google::protobuf::Closure*) (channel.cpp:520)
==00:00:24:07.934 26429== by 0x52E2C7: Report::Trigger(netcvm::ReportDevPolicyRequest&) (ev_report.cpp:24)
==00:00:24:07.934 26429== by 0x493BCA: DevHBTask::execute(int) (dev_hb_task.cpp:50)
==00:00:24:07.934 26429== by 0x49012F: ThreadPool::runtime(void*) (actuator.cpp:85)
==00:00:24:07.934 26429== by 0x825840E: execute_native_thread_routine (in /opt/csa/csa_lib/lib/libmydtls1.0.so)
==00:00:24:07.934 26429== by 0x9085EA4: start_thread (in /usr/lib64/libpthread-2.17.so)
==00:00:24:07.934 26429== by 0x9BB8B0C: clone (in /usr/lib64/libc-2.17.so)
To Reproduce (复现方法)
使用上述代码
Expected behavior (期望行为)

是某个函数释放不对吗？
Versions (各种版本)
OS:
Compiler:
brpc:
protobuf:

Additional context/screenshots (更多上下文/截图)

[zyearn]

brpc里面有使用一些全局变量，其中一些是new出来以后一直没有释放的。