This commit generalizes the bit array in 'base/util/bit_array.h',
so that it can be used in a statically, when the array size is known
at compile time, or dynamically. It uses the dynamic approach of the
bit array for a more generalized version of the packet allocator,
formerly only used by NIC session clients. The more generic packet
allocator is used by the block cache to circumvent the allocation
deadlock described in issue #1059.
Fixes#1059
This patch adds accessors to obtain the buffer of an attribute value,
which is useful to avoid the copying-out of such information by
maintaining pointers into the XML string as meta data.
This utility allows for the manual placement of objects without the need
to have a global placement new operation nor the need for type-specific
new operators.
Issue #989
Until now, block drivers had to deal with a pointer to the client
session component, e.g.: to acknowledge block packets already processed.
When a session was closed, the driver object wasn't informed explicitly,
which leads to defensive programming, or lastly to a race-condition in
test-blk-srv. To prevent from this class of errors, the pointer is now
private to the generic block driver base class, and not accessible to
the concrete driver implementation. Moreover, the driver gets explicitly
informed when a session got invalidated.
Ref #113
The new Attached_dataspace complements the existing Attached_*
utilities with a simple version that can be used with any kind of
dataspaces. It may be even useful as a common base type for the other
variants. For example, this patch simplifies Attached_rom_dataspace
and removes the Terminal::Client::Io_buffer.
This patch re-arranges nitpicker's graphics backend in a more modular
and expandable way. Generalized versions of the 'Canvas',
'Chunky_canvas', and 'Pixel_*' classes have been moved to
'os/include/util/' and 'os/include/os'. The only remaining parts that
are specific to nitpicker's needs are a few drawing functions, each
located in a distinct header at 'os/include/nitpicker_gfx/'.
This patch makes nitpicker's geometry utilities available for the use
by other programs. Thereby, the 'Point', 'Area', and 'Rect' classes
have become templates that take the coordinate type and distance type
as arguments.
Instead of, passing responsibility to manage and dissolve Signal_rpc_member
objects at a corresponding entrypoint to the user, hand over entrypoint's
reference to the constructor, and do it in the constructor resp. destructor
of the class.
Fixes#1022
Users of a File_system_session might want to force a file system
to flush or rather to synchronize its internal cache. A concret
default implementation is provided because not all file systems
maintain an internal cache and are not required to synchronize
caches.
Fixes#1007.
* allow to handle a maximum of packets in parallel
that fits free slots in the ack queue
* stop processing packets, when the driver can't handle
more requests in parallel, and resume packet handling,
when the driver is ready again
Instead of using an additional thread in each Session_component of a
block server, which uses the generic block component and driver classes,
replace it with signal dispatchers.
Ref #113
To support components, which implement the block session's server side
rpc object, and which doesn't write data to their device backend immediately,
an additional synchronization call is needed. Thereby, clients like for
instance a file system can tell these components, when a synchronization is
required.
Ref #113
The platform driver is used to access the features provided by the
Videocore mboxes, i.e., power configuration and framebuffer setup. The
framebuffer driver uses the platform interface to setup a screen mode of
1024x768.
In general, requesting a dataspace from a server twice is no good
idea. The server might react in a unrecoverable fashion. E.g. the rom_fs
service always throws away the corresponding dataspace from the first call
of dataspace(), and constructs a new one.
This patch changes the interface of Nitpicker to support dynamically
dimensioned virtual frame buffers. This solves two problems:
First, it enables a client to create a connection to nitpicker without
donating much session quota in advance. The old interface required each
screen-size-dependent client to donate as much memory as needed to
allocate a screen-sized virtual framebuffer. For clients that are
interested int the screen size but cover just a small portion of the
screen (e.g., a banner, a menu, an applet that sits in the screen
corner), this overprovisioning is painful. The new interface allows such
clients to upgrade the session quota for an existing session as needed.
Second, because each nitpicker session used to have a virtual frame
buffer with a fixed size over the lifetime of the session, a client that
wanted to implement a variable-sized window had to either vastly
overprovide resources (by opening a session as large as the screen just
in order to be prepared for the worst case of a maximized window), or it
had to replace the session by a new one (thereby discarding the stacking
order of the old views) each time the window changes its dimensions. The
new interface accommodates such clients much better.
With this patch, the 'Ring_buffer' class can be made unsynchronized by
setting the 'Ring_buffer_unsynchronized' policy as third template
argument.
Fixes#922.
For the framebuffer driver of the i.MX53 platform to work even when u-boot
didn't prepared the display previously, there were some IOMUX routes missing.
Fixes#914
* Remove far too low default values from Nic::Connection constructor
* Extend lwip initialization function with desired TX/RX buffer sizes
* Add configuration possibility to libc_lwip_dhcp plugin to define
buffer sizes, like the following:
'<libc tx_buf_size="1M" tx_buf_size="1M"/>'
Fixes#892
In order to be able to dynamically balance resources of slaves, we need
to provide an accessor to the slave's RAM session and a way to issue
yield requests.
