Pantheios在C++中设置显示级别

Question

我正在使用Pantheios库进行日志记录。我有：

pantheios::log(pantheios::debug, "I'm debug");
pantheios::log(pantheios::informational, "Some info");

以下哪项输出：

[MyApplication, Jun 14 15:45:26.549; Debug] : I'm debug
[MyApplication.1, Jun 14 15:45:26.549; Informational] : Some info

但我想在display info和debug之间进行选择：

 set_level(pantheios::informational) //what should this be ?
 pantheios::log(pantheios::debug, "I'm debug");
 pantheios::log(pantheios::informational, "Some info");

以下哪项输出：

[MyApplication.1, Jun 14 15:45:26.549; Informational] : Some info

Answer 1

实际过滤日志级别的“正确”方法是自定义记录器前端并覆盖pantheios::pantheios_fe_isSevereityLogged()，如下所示：

namespace
{
    static int s_log_level = pantheios::debug;
}

PANTHEIOS_CALL(int) pantheios_fe_isSeverityLogged(void *token,
    int severity, int backEndId)
{
    return severity <= s_log_level;
}

有关更多信息，请参阅this和this example。