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| author | gavinp@chromium.org <gavinp@chromium.org@0039d316-1c4b-4281-b951-d872f2087c98> | 2012-11-17 12:28:42 +0000 |
|---|---|---|
| committer | gavinp@chromium.org <gavinp@chromium.org@0039d316-1c4b-4281-b951-d872f2087c98> | 2012-11-17 12:28:42 +0000 |
| commit | de206bb758daa9b4c79863e8b64a9c39d2758b35 (patch) | |
| tree | f4e2f8bfadbc99cb12040d727e4524a3459eb32c /net/http/http_cache_transaction.h | |
| parent | 30c5656610da96b6b26cb0206d66c83b72afdd59 (diff) | |
| download | chromium_src-de206bb758daa9b4c79863e8b64a9c39d2758b35.zip chromium_src-de206bb758daa9b4c79863e8b64a9c39d2758b35.tar.gz chromium_src-de206bb758daa9b4c79863e8b64a9c39d2758b35.tar.bz2 | |
Track unconditionalizable http requests.
Occasionally the disk cache has a hit for an entry that cannot be used because it is out of freshness, but lacks a validator. Track these in the http request pattern histograms, since these are an interesting type of cached resource (they're in the cache, but useless except for forward/back).
R=rvargas@chromium.org
Review URL: https://chromiumcodereview.appspot.com/11362192
git-svn-id: svn://svn.chromium.org/chrome/trunk/src@168411 0039d316-1c4b-4281-b951-d872f2087c98
Diffstat (limited to 'net/http/http_cache_transaction.h')
| -rw-r--r-- | net/http/http_cache_transaction.h | 4 |
1 files changed, 4 insertions, 0 deletions
diff --git a/net/http/http_cache_transaction.h b/net/http/http_cache_transaction.h index 7046a93..35fd0c4 100644 --- a/net/http/http_cache_transaction.h +++ b/net/http/http_cache_transaction.h @@ -181,6 +181,8 @@ class HttpCache::Transaction : public HttpTransaction { // cover relatively common use cases being measured and considered for // optimization. Many use cases that are more complex or uncommon are binned // as PATTERN_NOT_COVERED, and details are not reported. + // NOTE: This enumeration is used in histograms, so please do not add entries + // in the middle. enum TransactionPattern { PATTERN_UNDEFINED, PATTERN_NOT_COVERED, @@ -188,6 +190,8 @@ class HttpCache::Transaction : public HttpTransaction { PATTERN_ENTRY_USED, PATTERN_ENTRY_VALIDATED, PATTERN_ENTRY_UPDATED, + PATTERN_ENTRY_CANT_CONDITIONALIZE, + PATTERN_MAX, }; // This is a helper function used to trigger a completion callback. It may |