来自 root（包括 root）的所有 json_objects 的空闲内存

Question

我有这个代码：

    struct json_object* parsed_json;
    struct json_object* portInConfig;
    struct json_object* masterInConfig;
    struct json_object* mapInConfig;
    struct json_object* managerPasswdInConfig;
    struct json_object* adminPasswdInConfig;
    struct json_object* modPasswdInConfig;
    struct json_object* guardPasswdInConfig;
    struct json_object* trustedPasswdInConfig;
    struct json_object* serverNameInConfig;
    struct json_object* team1NameInConfig;
    struct json_object* team2NameInConfig;
    struct json_object* team1ColorInConfig;
    struct json_object* team2ColorInConfig;
    struct json_object* gamemodeInConfig;

    parsed_json = json_object_from_file("config.json");
    if (json_object_object_get_ex(parsed_json, "port", &portInConfig) == 0) {
        printf("Failed to find port number in config\n");
        return -1;
    }
    if (json_object_object_get_ex(parsed_json, "master", &masterInConfig) == 0) {
        printf("Failed to find master variable in config\n");
        return -1;
    }
    if (json_object_object_get_ex(parsed_json, "map", &mapInConfig) == 0) {
        printf("Failed to find map name in config\n");
        return -1;
    }
    if (json_object_object_get_ex(parsed_json, "manager_password", &managerPasswdInConfig) == 0) {
        printf("Failed to find manager password in config\n");
        return -1;
    }
    if (json_object_object_get_ex(parsed_json, "admin_password", &adminPasswdInConfig) == 0) {
        printf("Failed to find admin password in config\n");
        return -1;
    }
    if (json_object_object_get_ex(parsed_json, "moderator_password", &modPasswdInConfig) == 0) {
        printf("Failed to find moderator password in config\n");
        return -1;
    }
    if (json_object_object_get_ex(parsed_json, "guard_password", &guardPasswdInConfig) == 0) {
        printf("Failed to find guard password in config\n");
        return -1;
    }
    if (json_object_object_get_ex(parsed_json, "trusted_password", &trustedPasswdInConfig) == 0) {
        printf("Failed to find trusted password in config\n");
        return -1;
    }
    if (json_object_object_get_ex(parsed_json, "server_name", &serverNameInConfig) == 0) {
        printf("Failed to find server name in config\n");
        return -1;
    }
    if (json_object_object_get_ex(parsed_json, "team1_name", &team1NameInConfig) == 0) {
        printf("Failed to find team1 name in config\n");
        return -1;
    }
    if (json_object_object_get_ex(parsed_json, "team2_name", &team2NameInConfig) == 0) {
        printf("Failed to find team2 name in config\n");
        return -1;
    }
    if (json_object_object_get_ex(parsed_json, "team1_color", &team1ColorInConfig) == 0) {
        printf("Failed to find team1 color in config\n");
        return -1;
    }
    if (json_object_object_get_ex(parsed_json, "team2_color", &team2ColorInConfig) == 0) {
        printf("Failed to find team2 color in config\n");
        return -1;
    }
    if (json_object_object_get_ex(parsed_json, "gamemode", &gamemodeInConfig) == 0) {
        printf("Failed to find gamemode in config\n");
        return -1;
    }
    port                      = json_object_get_int(portInConfig);
    master                    = json_object_get_int(masterInConfig);
    const char* managerPasswd = json_object_get_string(managerPasswdInConfig);
    const char* adminPasswd   = json_object_get_string(adminPasswdInConfig);
    const char* modPasswd     = json_object_get_string(modPasswdInConfig);
    const char* guardPasswd   = json_object_get_string(guardPasswdInConfig);
    const char* trustedPasswd = json_object_get_string(trustedPasswdInConfig);
    char*       serverName    = (char*) json_object_get_string(serverNameInConfig);
    char*       team1Name     = (char*) json_object_get_string(team1NameInConfig);
    char*       team2Name     = (char*) json_object_get_string(team2NameInConfig);
    uint8       team1Color[3];
    uint8       team2Color[3];
    uint8       gamemode = json_object_get_int(gamemodeInConfig);
    for (int i = 0; i < 3; ++i) {
        team1Color[i] = json_object_get_int(json_object_array_get_idx(team1ColorInConfig, i));
        team2Color[i] = json_object_get_int(json_object_array_get_idx(team2ColorInConfig, i));
    }
    uint8 mapArrayLen = json_object_array_length(mapInConfig);
    char  mapArray[mapArrayLen][64];

    for (int i = 0; i < mapArrayLen; ++i) {
        uint8 stringLen = json_object_get_string_len(json_object_array_get_idx(mapInConfig, i));
        if (stringLen > 64) {
            continue;
        }
        memcpy(mapArray[i], json_object_get_string(json_object_array_get_idx(mapInConfig, i)), stringLen + 1);
    }

    json_object_put(parsed_json);

我面临的问题是，当我尝试释放 parsed_json 对象时它不会释放所有对象。

如果我在 while 循环中有这个，valgrind 会大喊我正在释放内存我应该。

在不释放我不应该释放的内存的情况下释放所有对象（无内存泄漏）的方法是什么？

Answer 1

这实际上没有任何内存泄漏。

问题出在我存储字符串的方式上。将它传递给函数时，它不再释放内存。

来自 root（包括 root）的所有 json_objects 的空闲内存

Free memory of all json_objects from root (including root)

c

json-c