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Yet another buffer RAM patch: tNever ever ever keep a buffer memory chunk around for an empty buffer that could go on the freelist. This wants profiling to make sure that performance doesnt suffer.

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svn:r10993
This commit is contained in:
Nick Mathewson 2007-07-30 17:47:43 +00:00
parent 34a3a5e2f4
commit 9260a824ef
2 changed files with 14 additions and 1 deletions
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7
ChangeLog
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@ -1,3 +1,10 @@
Changes in version 0.2.0.4-alpha - 2007-??-??
o Minor features (performance):
- Be even more aggressive about releasing RAM from small
empty buffers. Thanks to our free-list code, this shouldn't be too
performance-intensive.
Changes in version 0.2.0.3-alpha - 2007-07-29
o Major features:
- The first pieces of our "bridge" design for blocking-resistance

8
src/or/buffers.c
View File

@ -486,7 +486,13 @@ buf_remove_from_front(buf_t *buf, size_t n)
if (buf->datalen) {
buf->cur = _wrap_ptr(buf, buf->cur+n);
} else {
buf->cur = buf->mem;
if (IS_FREELIST_SIZE(buf->len)) {
buf->highwater = 0;
if (add_buf_mem_to_freelist(buf))
return;
} else {
buf->cur = buf->mem;
}
}
check();
}