On 2011-04-02 06:26, wangbin wrote: > What's the method to replace/throw away old .o/.d/.manifest file in cache?
As Wilson Snyder said: using atomic file system rename() calls. The new file content is written to a temporary file and then the temporary file is renamed to the file that should be replaced. Or do you want to know how ccache can know which files to throw away to decrease the cache size? It does this by updating mtime of files that are read on each cache hit. A counter of the current cache size is also updated when new files are written to the cache, and when the cache size exceeds the configured limit, files with the oldest mtimes are deleted. > What factors will effected this operation, source code context, path...etc? I'm not sure I understand the question. What do you mean? The cache cleanup algorithm only takes cache size into account (or number of files in the cache, if you have set a limit on the number of files). -- Joel _______________________________________________ ccache mailing list ccache@lists.samba.org https://lists.samba.org/mailman/listinfo/ccache