why

[hushanjiang]

No description provided.

[hushanjiang]

there is the code:
#include
#include <stdio.h>
#include <stdlib.h>
#include <stddef.h>
#include <string.h>
#include <pthread.h>
#include <unistd.h>

#include "json-c/json.h"

void* parse_json(void *p)
{
printf("start parse\n");
std::string req = "{"method": "fm_get_member_info", "msg_tag":"xx", "msg_uuid": "uuid", "msg_encry": "true", "session_id":"session_id", "req_id": 123, "timestamp":123456890, "real_id":2003, "params": {"family_id":2013, "target_user_id": 2005} }";

for(int i=0; i<= 10000; i++)
{
    enum json_tokener_error jerr;
    json_object *root = json_tokener_parse_verbose(req.c_str(), &jerr);
    if(jerr != json_tokener_success)
    {
        printf("invalid json1\n");
        return NULL;
    }

    json_object *params = NULL;
    if(json_object_object_get_ex(root, "params", &params)) 
    { 
        if(!json_object_is_type(params, json_type_object)) 
        { 
            printf("invalid json2\n");
            json_object_put(root);
            return NULL; 
        } 
    }
    std::string result = json_object_to_json_string(params);
    if(result.size() != 45)
    {
        printf("length: %u, data: %s\n", result.size(), result.c_str());
    }
    
    json_object_put(root);	

    usleep(1);
}

}

int main (int argc, char **argv)
{
int i,ret;
for(int i=0; i<5; i++)
{
pthread_t id;
ret=pthread_create(&id,NULL,parse_json,NULL);
if(ret!=0)
{
printf("Create pthread error!\n");
return -1;
}
}

sleep(5);
return 0;

}

make flag:
g++ -DLINUX -W -g -I./ -I../ -I../../../../../3rd_party/sdk/json-c/include/ -L../../../../../3rd_party/sdk/json-c/lib/ -ljson-c -o test-json test-json.cpp

result:
start parse
start parse
start parse
start parse
start parse
length: 41, data: { "family_id": 2013, "target_user_id": }
length: 41, data: { "family_id": , "target_user_id": 2005 }
length: 41, data: { "family_id": , "target_user_id": 2005 }
length: 15, data: { "family_id":
length: 39, data: { "family_id": 2013, "target_user_id":