spice日志提取

编写其他工程，可以借鉴。

#include 
#include 
#include 


#define spice_info(format, ...) G_STMT_START {                         \
    spice_log(G_LOG_LEVEL_INFO,  __FUNCTION__, "" format, ## __VA_ARGS__); \
} G_STMT_END

#define spice_debug(format, ...) G_STMT_START {                         \
    spice_log(G_LOG_LEVEL_DEBUG,  __FUNCTION__, "" format, ## __VA_ARGS__); \
} G_STMT_END

#define spice_warning(format, ...) G_STMT_START {                       \
    spice_log(G_LOG_LEVEL_WARNING,  __FUNCTION__, "" format, ## __VA_ARGS__); \
} G_STMT_END

#define spice_critical(format, ...) G_STMT_START {                          \
    spice_log(G_LOG_LEVEL_CRITICAL,  __FUNCTION__, "" format, ## __VA_ARGS__); \
} G_STMT_END

#define spice_error(format, ...) G_STMT_START {                         \
    spice_log(G_LOG_LEVEL_ERROR,  __FUNCTION__, "" format, ## __VA_ARGS__); \
} G_STMT_END


static int glib_debug_level = INT_MAX;
static int abort_mask = 0;




static void spice_logv(const char *log_domain,
                       GLogLevelFlags log_level,
                       const char *function,
                       const char *format,
                       va_list args)
{
    GString *log_msg;
    if ((log_level & G_LOG_LEVEL_MASK) > glib_debug_level) {
        return; // do not print anything
    }

    log_msg = g_string_new(NULL);
    if ( function) {
        g_string_append_printf(log_msg, "%s: ",  function);
    }
    if (format) {
        g_string_append_vprintf(log_msg, format, args);
    }
    g_log(log_domain, log_level, "%s", log_msg->str);
    g_string_free(log_msg, TRUE);
    /*
    if ((abort_mask & log_level) != 0) {
        spice_backtrace();
        abort();
    }
    */
}

void spice_log(GLogLevelFlags log_level,
               const char *function,
               const char *format,
               ...)
{
    va_list args;
    va_start (args, format);
    spice_logv (G_LOG_DOMAIN, log_level, function, format, args);
    va_end (args);
}





int main()
{

    spice_info("this is info");
    spice_debug("this is debug");
    spice_warning("this is warning");
    spice_critical("this is critical");

    //spice_error("this is error");

    return 0;
}

编译&运行结果
[root@net test]# gcc log.c -o log -pthread -I/usr/include/glib-2.0 -I/usr/lib64/glib-2.0/include -lglib-2.0
[root@allinone01 test]# ./log

* (process:15224): WARNING *: main: this is warning

* (process:15224): CRITICAL *: main: this is critical
[root@net test]#