Boost logger追加到文件 [英] Boost logger append to file

问题描述

我已经初始化了记录到文件的接收器:

I have initialized sink that logs to file:

logging::add_file_log
            (
            keywords::file_name = "sample_%N.log",                                        /*< file name pattern >*/
            keywords::rotation_size = 10 * 1024 * 1024,                                   /*< rotate files every 10 MiB... >*/
            keywords::time_based_rotation = sinks::file::rotation_at_time_point(0, 0, 0), /*< ...or at midnight >*/
            keywords::format = "[%TimeStamp%]: %Message%",                                 /*< log record format >*/
            keywords::auto_flush = true
            );

它看起来在程序重新启动期间正在重写文件.如何使其附加到文件?

It looks it rewrites file during program restart. How to make it append to file?

推荐答案

文档说

open_mode描述文件打开模式的掩码.参见std :: ios_base :: openmode.

open_mode The mask that describes the open mode for the file. See std::ios_base::openmode.

用于追加的开放模式keywords::open_mode是std::ios_base::app，因此您似乎需要添加它.

The openmode keywords::open_mode for append is std::ios_base::app, so it looks like you need to add it.

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