This is semantically similar to the existing available() method, however will
not block, and doesn't need to do the work to actually determine the number of
available bytes.
As part of this patch, I also fixed one available() implementation which was
incorrectly throwing NS_BASE_STREAM_WOULD_BLOCK.
Differential Revision: https://phabricator.services.mozilla.com/D170697
As serializing IPCStream no longer requires a manager or FileDescriptor array,
the arguments are no longer necessary, and can be removed. The AutoIPCStream
helper can also be removed, as managed actors are no longer used for
serialization, so a delayed start callback is not necessary.
The delayed start parameter is also removed from nsIIPCSerializableInputStream
instances, but is still present as `aAllowLazy` on the toplevel serialization
methods.
Differential Revision: https://phabricator.services.mozilla.com/D141048
This will improve the efficiency of serializing large data pipes, which in bad
cases can end up serializing very small amounts of data in individual pipes
over IPC, and acts as a compliment to the existing logic for limiting
serialized message sizes. It is also necessary for the changes in bug 1754004,
which require the ability to include FileDescriptor inline in the message,
which could blow out our FileDescriptor count limits if pipe creation was
unlimited.
In some tests, this change reduces the number of pipes required to serialize a
nsIInputStream from over 5000 to 1.
Differential Revision: https://phabricator.services.mozilla.com/D141036
As serializing IPCStream no longer requires a manager or FileDescriptor array,
the arguments are no longer necessary, and can be removed. The AutoIPCStream
helper can also be removed, as managed actors are no longer used for
serialization, so a delayed start callback is not necessary.
The delayed start parameter is also removed from nsIIPCSerializableInputStream
instances, but is still present as `aAllowLazy` on the toplevel serialization
methods.
Differential Revision: https://phabricator.services.mozilla.com/D141048
This will improve the efficiency of serializing large data pipes, which in bad
cases can end up serializing very small amounts of data in individual pipes
over IPC, and acts as a compliment to the existing logic for limiting
serialized message sizes. It is also necessary for the changes in bug 1754004,
which require the ability to include FileDescriptor inline in the message,
which could blow out our FileDescriptor count limits if pipe creation was
unlimited.
In some tests, this change reduces the number of pipes required to serialize a
nsIInputStream from over 5000 to 1.
Differential Revision: https://phabricator.services.mozilla.com/D141036
As serializing IPCStream no longer requires a manager or FileDescriptor array,
the arguments are no longer necessary, and can be removed. The AutoIPCStream
helper can also be removed, as managed actors are no longer used for
serialization, so a delayed start callback is not necessary.
The delayed start parameter is also removed from nsIIPCSerializableInputStream
instances, but is still present as `aAllowLazy` on the toplevel serialization
methods.
Differential Revision: https://phabricator.services.mozilla.com/D141048
This will improve the efficiency of serializing large data pipes, which in bad
cases can end up serializing very small amounts of data in individual pipes
over IPC, and acts as a compliment to the existing logic for limiting
serialized message sizes. It is also necessary for the changes in bug 1754004,
which require the ability to include FileDescriptor inline in the message,
which could blow out our FileDescriptor count limits if pipe creation was
unlimited.
In some tests, this change reduces the number of pipes required to serialize a
nsIInputStream from over 5000 to 1.
Differential Revision: https://phabricator.services.mozilla.com/D141036
As serializing IPCStream no longer requires a manager or FileDescriptor array,
the arguments are no longer necessary, and can be removed. The AutoIPCStream
helper can also be removed, as managed actors are no longer used for
serialization, so a delayed start callback is not necessary.
The delayed start parameter is also removed from nsIIPCSerializableInputStream
instances, but is still present as `aAllowLazy` on the toplevel serialization
methods.
Differential Revision: https://phabricator.services.mozilla.com/D141048
This will improve the efficiency of serializing large data pipes, which in bad
cases can end up serializing very small amounts of data in individual pipes
over IPC, and acts as a compliment to the existing logic for limiting
serialized message sizes. It is also necessary for the changes in bug 1754004,
which require the ability to include FileDescriptor inline in the message,
which could blow out our FileDescriptor count limits if pipe creation was
unlimited.
In some tests, this change reduces the number of pipes required to serialize a
nsIInputStream from over 5000 to 1.
Differential Revision: https://phabricator.services.mozilla.com/D141036
This patch tries to move them to `ContentParent` instead.
`ProcessPriorityManagerImpl::ObserveContentParentCreated` could not be moved
due to using `do_QueryInterface` to cast from a `nsISupports` down to the
`ContentParent` object. This could be fixed to remove the interfaces entirely,
but I left that for a follow-up.
Depends on D20549
Differential Revision: https://phabricator.services.mozilla.com/D20550
This patch tries to move them to `ContentParent` instead.
`ProcessPriorityManagerImpl::ObserveContentParentCreated` could not be moved
due to using `do_QueryInterface` to cast from a `nsISupports` down to the
`ContentParent` object. This could be fixed to remove the interfaces entirely,
but I left that for a follow-up.
Depends on D20549
Differential Revision: https://phabricator.services.mozilla.com/D20550
The total size of an IPC inputStream message must be less than 1mb. When we
compose the message for the multiplex stream, each sub stream collaborates with
its own size, deciding if it's better to be a pipe stream (IPCRemoteStream) or
a full serialized one.
Differential Revision: https://phabricator.services.mozilla.com/D18543
Before this set of patches, the decision of exposing the stream as a pipe was
centralized in IPCStreamUtils, based on the total expectation size of the IPC
message. This triggers issues when multiplex inputStreams contain something
that cannot be sent as a pipe (IPCBlobInputStream, for instance), or something
that it's better to do not set as a pipe (nsFileInputStream), together with
memory streams (nsStringInputStream), which could make the IPC message greater
then what accepted (1mb).
These patches move the "pipe vs non-pipe" choice into the single inputStream
implementation.
AsyncWaitRunnable holds a strong reference to its stream, and
NonBlockingAsyncInputStream holds a strong reference to the
runnable. The cycle gets broken in the RunAsyncWaitCallback() method
of the stream, but if the runnable is cancelled then we leak them
both. This patch fixes that by clearing the pointer to the stream when
the runnable is cancelled, breaking the cycle.
Differential Revision: https://phabricator.services.mozilla.com/D16248
AsyncWaitRunnable holds a strong reference to its stream, and
NonBlockingAsyncInputStream holds a strong reference to the
runnable. The cycle gets broken in the RunAsyncWaitCallback() method
of the stream, but if the runnable is cancelled then we leak them
both. This patch fixes that by clearing the pointer to the stream when
the runnable is cancelled, breaking the cycle.
Differential Revision: https://phabricator.services.mozilla.com/D16248
In the current code there are 3 main issues:
1. nsFileStream is not really thread-safe. There is nothing to protect the
internal members and we see crashes.
2. nsPipeInputStream doesn't implement ::Seek() method and that caused issues
in devtools when a nsHttpChannel sends POST data using a pipe. In order to fix
this, bug 1494176 added a check in nsHttpChannel: if the stream doesn't
implement ::Seek(), let's clone it. This was an hack around nsPipeInputStream,
and it's bad.
3. When nsHttpChannel sends POST data using a file stream, nsFileStream does
I/O on main-thread because of the issue 2. Plus, ::Seek() is called on the
main-thread causing issue 1.
Note that nsPipeInputStream implements only ::Tell(), of the nsISeekableStream
methods. It doesn't implement ::Seek() and it doesn't implement ::SetEOF().
With this patch I want to fix point 2 and point 3 (and consequentially issue 1
- but we need a separate fix for it - follow up). The patch does:
1. it splits nsISeekableStream in 2 interfaces: nsITellableStream and
nsISeekableStream.
2. nsPipeInputStream implements only nsITellableStream. Doing this, we don't
need the ::Seek() check for point 2 in nsHttpChannel: a simple QI check is
enough.
3. Because we don't call ::Seek() in nsHttpChannel, nsFileStream doesn't do I/O
on the main-thread, and we don't crash doing so.
This was done automatically replacing:
s/mozilla::Move/std::move/
s/ Move(/ std::move(/
s/(Move(/(std::move(/
Removing the 'using mozilla::Move;' lines.
And then with a few manual fixups, see the bug for the split series..
MozReview-Commit-ID: Jxze3adipUh
Sylvestre Ledru