imgLoader::ValidateEntry would aggressively determine an entry has
expired, even when the request hasn't yet begun. This is because the
expiration time for the entry was not set unless it was for a channel
which supports caching. Now we set the expiration time for all
channels, and if it doesn't support caching, it just expires at the
current time when imgRequest::OnStartRequest is called. Additionally,
imgLoader::ValidateEntry will not consider the expiration time in the
entry until it is non-zero.
The "current URL" in the spec:
https://html.spec.whatwg.org/multipage/embedded-content.html#dom-img-currentsrc
maps to imgIRequest.URI, not currentURI.
Rename imgIRequest.currentURI to finalURI to prevent such confusion.
MozReview-Commit-ID: CjBh2V4z8K9
--HG--
extra : rebase_source : 01277d16ef12845e12cc846f9dd4a21ceeca283b
The "current URL" in the spec:
https://html.spec.whatwg.org/multipage/embedded-content.html#dom-img-currentsrc
maps to imgIRequest.URI, not currentURI.
Rename imgIRequest.currentURI to finalURI to prevent such confusion.
MozReview-Commit-ID: CjBh2V4z8K9
--HG--
extra : rebase_source : d3047aed22f116ff9a74099b646a84e597388673
An imgRequestProxy may defer notifications when it needs to block on an
imgCacheValidator. It may also be cancelled before the validator has
completed its operation, but before this change, we did not remove the
request from the set of proxies, imgCacheValidator::mProxies. When the
deferral was completed, it would assert to ensure each proxy was still
expecting a deferral before issuing the notifications. Cancelling a
request can actually reset that state, which means we fail the assert.
Failing the assert is actually harmless; in release we suffer no
negative consequences as a result of this sequence of events. Now we
just remove the proxy from the validator set to avoid asserting.
imgLoader::LoadImage now asserts in debug builds that the load group
given as a parameter matches that of the given document (if any). If
they mismatch, then we won't be blocking the document's load event as we
expect with the future removal of the imgIOnloadBlocker.
imgLoader::LoadImageWithChannel never actually added the request to the
load group at all, unless it was done as part of the validator. Now it
will consistently add the request to the channel's load group as
expected. Additionally it also asserts in debug builds that the
channel's load group matches that of the given document, as in
LoadImage.
We're currently fairly vague and inconsistent about the values we provide to
content policy implementations for requestOrigin and requestPrincipal. In some
cases they're the triggering principal, sometimes the loading principal,
sometimes the channel principal.
Our existing content policy implementations which require or expect a loading
principal currently retrieve it from the context node. Since no current
callers require the principal to be the loading principal, and some already
expect it to be the triggering principal (which there's currently no other way
to retrieve), I chose to pass the triggering principal whenever possible, but
use the loading principal to determine the origin URL.
As a follow-up, I'd like to change the nsIContentPolicy interface to
explicitly receive loading and triggering principals, or possibly just
LoadInfo instances, rather than poorly-defined request
origin/principal/context args. But since that may cause trouble for
comm-central, I'd rather not do it as part of this bug.
MozReview-Commit-ID: LqD9GxdzMte
--HG--
extra : rebase_source : 41ce439912ae7b895e0a3b0e660fa6ba571eb50f
The imgLoader code consistently uses the term 'loadingPrincipal' for the
principal that is called the triggeringPrincipal everywhere else it's used.
This is confusing, and since we need to make changes to how those values are
determined, it should be fixed beforehand.
MozReview-Commit-ID: 8CTHwayzcaD
--HG--
extra : rebase_source : d4405b0ecfe1c8dfb9bfdf61fe6ed6cfb180ba83
In order to let necko postpone the load of favicon, we have to set request context ID to the http channel that is created to load favicon.
This patch starts with passing a request context ID to nsContentUtils::LoadImage and makes other necessary changes to set the request context ID to the channel.
All the SizeOf{In,Ex}cludingThis() functions take a MallocSizeOf function
which measures memory blocks. This patch introduces a new type, SizeOfState,
which includes a MallocSizeOf function *and* a table of already-measured
pointers, called SeenPtrs. This gives us a general mechanism to measure
graph-like data structures, by recording which nodes have already been
measured. (This approach is used in a number of existing reporters, but not in
a uniform fashion.)
The patch also converts the window memory reporting to use SizeOfState in a lot
of places, all the way through to the measurement of Elements. This is a
precursor for bug 1383977 which will measure Stylo elements, which involve
Arcs.
The patch also converts the existing mAlreadyMeasuredOrphanTrees table in the
OrphanReporter to use the new mechanism.
--HG--
extra : rebase_source : 2c23285f8b6c3b667560a9d14014efc4633aed51
This is similar like the previous patch, but for the 8-bit string variants.
Also, it changes assignment to Adopt() in GetCString() and GetDefaultCString()
to avoid an extra copy.
--HG--
extra : rebase_source : eba805c3a7b809d5ccd6e853b1c9010db9477667
The problem is if we found a cache hit, then we could go through
ValidateRequestWithNewChannel to validate the cache.
Then if the CSP check fail(asyncOpen2() will fail), then the
imgRequestProxy will remain there, and cause the timeout.
I run into problem when running mochitest
browser/base/content/test/general/browser_aboutHome.js in non-e10s mode.
In the beginning, browser.xul will load defaultFavicon.png, will create
an image cache there.
Next time when the test starts to run, when it loads about:home, then it
will try to load defaultFavicon.png, it will found an image cache hit
(loaded previously by browser.xul), and call
ValidateRequestWithNewChannel there, however the asyncOpen2 call failed,
and the imgRequestProxy is added to the loadGroup of about:home, and
never be notified until timeout.
This part is mainly to mark the channel as urgent-start if src related
attributes in HTMLImageElement and HTMLInputElement is set and the channel is
open due to user interaction. Unfortunately, we cannot just check the event
state just after creating channel since some loading image tasks will be queue
and execute in stable state. Thus, I store the event state in elements and
pass it to the place where create the channel.
MozReview-Commit-ID: GBdAkPfVzsn
--HG--
extra : rebase_source : 715352317b4b600f8a7f78b7bc22b894bb272d27
