Re: APC & Custom streams

From: Date: Mon, 26 Sep 2005 02:49:49 +0000
Subject: Re: APC & Custom streams
References: 1 2 3 4 5  Groups: php.pecl.dev 
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Sara Golemon wrote: >>>Do I understand you to mean that *if* a wrapper implements url_stat() > > and > >>>*if* the stat_buf is populated with, at minimum, those three elements > > that > >>>APC will cache? >> >>I don't use a wrapper here. The code in question is in >>pecl/apc/apc_cache.c and it looks like this: >> > > [...snip...] > >>So, for the top-level script I get the stat struct from Apache via >>sapi_get_stat(). For included files I use apc_stat() which just does a >>normal stat() call. This would have to be changed to use the wrapper >>code for it to have any chance of working. >> > > Roger. Anyway, the "gain" of including wrapped streams is probably small > compared to the cost of issuing url_stat()s, just wanted to be clear. One > thing this does mean though is that the payload portion of PHARs won't be > cached. Because of this, PHP_Archive implements a run-time memory-based cache. So, to use a .phar like install-pear.phar, memory_limit might be an issue, depends on how much space each of the files takes in memory. It would be really easy to simulate the inode/mtime stuff in PHP_Archive if APC was modified to use the wrapper code, incidentally. As long as that data is only used to generate a hash, and not to attempt to access the thing directly, there is no issue at all. Greg

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