Commit Graph

308 Commits

Author SHA1 Message Date
Martin Stein
ecbb7534b9 register set: make noncopyable
If a register set gets copied, the '_plain_access' of the copy references
the plain access object of the original object.

Ref #2196
2017-03-15 12:32:23 +01:00
Martin Stein
442c24420d mmio: separate MMIO access and register logic
By separating the plain MMIO access implementation from the generic bit
and offset logic of registers, we can now use the latter also with other
types of register access like I2C. The register and MMIO front-ends have
not changed due to the separation.

Ref #2196
2017-03-15 12:24:42 +01:00
Martin Stein
daaddbd584 base*, os: get rid of all env() calls
Issue #1987
2017-02-28 13:00:42 +01:00
Martin Stein
56cafb3b57 hw: fix race in signal dispatching
There was a race when the component entrypoint wanted to do
'wait_and_dispatch_one_signal'. In this function it raises a flag for
the signal proxy thread to notice that the entrypoint also wants to
block for signals. When the flag is set and the signal proxy wakes up
with a new signal, it tried to cancel the blocking of the entrypoint.
However, if the entrypoint had not reached the signal blocking at this
point, the cancel blocking failed without a solution. Now, the new
Kernel::cancel_next_signal_blocking call solves the problem by storing a
request to cancel the next signal blocking of a thread immediately
without blocking itself.

Ref #2284
2017-02-28 13:00:41 +01:00
Norman Feske
29b8d609c9 Adjust file headers to refer to the AGPLv3 2017-02-28 12:59:29 +01:00
Norman Feske
fcb861689a base: support for re-validating session routes
This patch supplements 'Session_state' with the methods needed to test
the validity of a session with a changed routing policy.
2017-02-28 12:59:26 +01:00
Sebastian Sumpf
553a4222f4 base: entrypoint dissolve signal proxy
If not dissolved in ~Entrypoint, the signal proxy is found within NOVA's
and FOC's object pool upon Rpc_entrypoint destruction. This leads to a
deadlock because the signal proxy is destructed before the RPC EP.

issue #2284
2017-02-28 12:59:24 +01:00
Norman Feske
dfc4c58782 root/component.h: POLICY::release on exception
This patch ensures that the POLICY::release is called whenever the
session creation aborted with an exception. In the original version, an
exception like 'Quota_exceeded' caused a single-session root interface
to deny subsequent session requests.
2017-02-28 12:59:24 +01:00
Norman Feske
7d9f68493a base: support for multi-staged child startup
This patch enhances the 'Child' and 'Child_policy' with the ability to
separate the different steps of bootstrapping children. If the
'Child_policy::initiate_env_sessions()' returns false, the child's
environment sessions remain unrouted at construction time. This way,
child objects for many children can be initialized to a state that
allows the children to represent services for other children. Therefore,
session routing can be applied before any child executes.

At this stage, the environment RAM sessions of all children can be
created. Note that this step still has the limitation that RAM sessions
are generally expected to be provided by either the parent or a local
service.

Once all children are equipped with RAM, they can in principle receive
session-quota donations. Hence, all other environment sessions can now
be arbitrarily routed and initiated.

Once the environment of a child is complete, the child's process and
initial thread is created.
2017-02-28 12:59:23 +01:00
Norman Feske
9cba459958 base: remove Child::heap
This patch improves the accounting for the backing store of
session-state meta data. Originally, the session state used to be
allocated by a child-local heap partition fed from the child's RAM
session. However, whereas this approach was somehow practical from a
runtime's (parent's) point of view, the child component could not count
on the quota in its own RAM session. I.e., if the Child::heap grew at
the parent side, the child's RAM session would magically diminish. This
caused two problems. First, it violates assumptions of components like
init that carefully manage their RAM resources (and giving most of them
away their children). Second, if a child transfers most of its RAM
session quota to another RAM session (like init does), the child's RAM
session may actually not allow the parent's heap to grow, which is a
very difficult error condition to deal with.

In the new version, there is no Child::heap anymore. Instead, session
states are allocated from the runtime's RAM session. In order to let
children pay for these costs, the parent withdraws the local session
costs from the session quota donated from the child when the child
initiates a new session. Hence, in principle, all components on the
route of the session request take a small bite from the session quota to
pay for their local book keeping

Consequently, the session quota that ends up at the server may become
depleted more or less, depending on the route. In the case where the
remaining quota is insufficient for the server, the server responds with
'QUOTA_EXCEEDED'. Since this behavior must generally be expected, this
patch equips the client-side 'Env::session' implementation with the
ability to re-issue session requests with successively growing quota
donations.

For several of core's services (ROM, IO_MEM, IRQ), the default session
quota has now increased by 2 KiB, which should suffice for session
requests to up to 3 hops as is the common case for most run scripts. For
longer routes, the retry mechanism as described above comes into effect.
For the time being, we give a warning whenever the server-side quota
check triggers the retry mechanism. The warning may eventually be
removed at a later stage.
2017-02-28 12:59:23 +01:00
Norman Feske
9d683a56a0 base: add Child_policy::session_state_changed()
This method is a hook to enable a runtime to respond to state changes.
In particular, in init this hook is used to trigger the generation of a
new state report, if configured.

Furthermore, the patch introduces the 'generate_client_side_info' and
'generate_server_side_info' methods to the 'Session_state', which
generates an XML representation of the session states to appear in
reports produced by init.

Issue #2246
2017-02-28 12:59:22 +01:00
Norman Feske
bfdadc55b2 base: Add Number_of_bytes::print method
This method attempts to print the number with a K/M/G unit if possible
and thereby increases the human readability of generated output.
2017-02-28 12:59:20 +01:00
Norman Feske
c0af463b81 base: Add Child_policy::Route
The new return value of 'resolve_session_request' allows the child
policy to define the label used as the policy selector at the server.

Because this patch introduces the distinction of the child-provided
label from the label as presented to the server along with the session
request, the latter is now handled as a dedicated 'Session_state'
argument.

Issue #2248
2017-02-28 12:59:20 +01:00
Sebastian Sumpf
b66716d278 base: entrypoint 'wait_and_dispatch_one_signal'
There existed a race when 'wait_and_dispatch_one_signal' is called form
a RPC context, because the 'signal_proxy' or 'main' will block and the
signal semaphore, when the EP then calls 'wait_and_dispatch_one_signal',
the signal proxy is woken up ands sends an RPC to the EP, leading to a
dead lock if no further signal arrive, because the EP will then remain
blocked in the signal semaphore.

Therefore, for this case, the signal proxy will now perform a semaphore
up operation and does not perform an RPC if the EP is within
'wait_and_dispatch_one_signal'.
2017-02-27 15:37:50 +01:00
Johannes Schlatow
762728fee0 base: remove superfluous line feeds in print_lines
Fixes #2279
2017-02-23 15:03:29 +01:00
Christian Helmuth
6e5f3d432e Post signal-handler hook in entrypoint
A Signal_handler may schedule a hook function that is executed after the
signal handler returned. This can be used if the hook function may
trigger a (nested) signal handler by means of
wait_and_dispatch_one_signal(). Otherwise, an occurrence of the same
signal that triggered the original signal handler results in a dead lock
just before calling the nested handler (due to the Signal_context
destruction lock).
2017-02-23 14:54:51 +01:00
Stefan Kalkowski
cf943dac65 hw: bootstrap into kernel
Put the initialization of the cpu cores, setup of page-tables, enabling of
MMU and caches into a separate component that is only used to bootstrap
the kernel resp. core.

Ref #2092
2017-02-23 14:54:42 +01:00
Stefan Kalkowski
a97e92c7ec base: make Allocator_avl::_avl_tree accessable
This hook allows the export of the allocator's state by a derrived
class. I.e., the final state of the allocator used for bootstrapping
core.

Ref #2092
2017-02-07 19:20:30 +01:00
Stefan Kalkowski
7c8281f2d6 util: turn max, min, and abs into const_expr
Ref #2092
2017-02-07 19:20:29 +01:00
Emery Hemingway
92978933c7 root/component: log error on Out_of_memory
Servers should account and handle this condition locally.
2017-02-07 11:12:24 +01:00
Norman Feske
aa29ebe751 base/shared_object.h: add missing includes 2017-02-07 11:12:23 +01:00
Christian Helmuth
ce3d10465e Mark warnings from the signal dispatcher as such 2017-01-31 14:58:36 +01:00
Christian Helmuth
7386c4e1d1 More robust handling of suspend in entrypoint
First, calls to manage and dissolve signal contexts now check if the
signal receiver was constructed. There is a small window during suspend
where it is destructed before reconstructed again.

Last, we ensure that processing of incoming signal was deblocked by the
suspend signal before entering the suspend operation. This way we ensure
already queued signal are handled.
2017-01-31 14:58:36 +01:00
Alexander Boettcher
dd5592cc50 Fix String(Hex()) usage
- additional add test casye to log.run

Fixes #2265
2017-01-31 12:02:21 +01:00
Norman Feske
cd3a5852d6 Warn about the use of deprecated headers
This commit enables compile-time warnings displayed whenever a deprecated
API header is included, and adjusts the existing #include directives
accordingly.

Issue #1987
2017-01-31 12:01:18 +01:00
Stefan Kalkowski
c76c199f8d hw: enable SMP for Wandboard (fix #2253) 2017-01-31 12:01:16 +01:00
Norman Feske
e43da51bd6 base: handle dangling env sessions in ~Child
This commit addresses the situation where an environment session
outlives the session-providing service. In this case, the env session
got already invaidated at the destruction time of the server. However,
the underlying session-state structure continues to exist until the
client is destructed. During the eventual destruction of such a dangling
environment session, we have to be careful not to interact with the
no-longer existing service.

Ref #2197
2017-01-20 16:47:01 +01:00
Christian Prochaska
ec5dbe66db trace_fs: API transition (fix 'deprecated' warnings)
Issue #1987
2017-01-20 16:46:58 +01:00
Norman Feske
a7f40b24ca Warn about the use of deprecated env() function
This patch enables warnings if one of the deprecate functions that rely
in the implicit use of the global Genode::env() accessor are called.

For the time being, some places within the base framework continue
to rely on the global function while omitting the warning by calling
'env_deprecated' instead of 'env'.

Issue #1987
2017-01-13 13:07:13 +01:00
Norman Feske
73837ef56a init: print error for denied environment sessions
Fixes #2214
2017-01-13 13:07:08 +01:00
Martin Stein
613f4171f3 sd_card: i.MX6 support
The i.MX6 driver shares most of its code with the i.MX53 driver.

Ref #2206
2017-01-13 13:07:06 +01:00
Norman Feske
0d295f75a1 base: apply routing policy to environment sessions
This patch changes the child-construction procedure to allow the routing
of environment sessions to arbitrary servers, not only to the parent.
In particular, it restores the ability to route the LOG session of the
child to a LOG service provided by a child of init. In principle, it
becomes possible to also route the immediate child's PD, CPU, and RAM
environment sessions in arbitrary ways, which simplifies scenarios that
intercept those sessions, e.g., the CPU sampler.

Note that the latter ability should be used with great caution because
init needs to interact with these sessions to create/destruct the child.
Normally, the sessions are provided by the parent. So init is safe at
all times. If they are routed to a child however, init will naturally
become dependent on this particular child. For the LOG session, this is
actually not a problem because even though the parent creates the LOG
session as part of the child's environment, it never interacts with the
session directly.

Fixes #2197
2016-12-23 16:52:08 +01:00
Norman Feske
25a7ea3d40 base: rename 'Volatile_object' to 'Reconstructible'
Fixes #2151
2016-12-01 17:46:50 +01:00
Edgard Schmidt
f97e0f3fa0 Allow RPC arguments w/o default constructor
Fixes #2150
2016-11-30 13:38:03 +01:00
Norman Feske
5a1cef6381 Make label prefixing more strict
This patch unconditionally applies the labeling of sessions and thereby
removes the most common use case of 'Child_policy::filter_session_args'.
Furthermore, the patch removes an ambiguity of the session labels of
sessions created by the parent of behalf of its child, e.g., the PD
session created as part of 'Child' now has the label "<child-name>"
whereas an unlabeled PD-session request originating from the child
has the label "<child-name> -> ". This way, the routing-policy of
'Child_policy::resolve_session_request' can differentiate both cases.

As a consequence, the stricter labeling must now be considered wherever
a precise label was specified as a key for a session route or a server-
side policy selection. The simplest way to adapt those cases is to use a
'label_prefix' instead of the 'label' attribute. Alternatively, the
'label' attribute may used by appending " -> " (note the whitespace).

Fixes #2171
2016-11-30 13:37:07 +01:00
Alexander Boettcher
33b40ec5d9 base: free memory of object throwing exception
in constructor.

Extend test case to verify it and run it by autopilot.
2016-11-30 13:37:05 +01:00
Martin Stein
288c2c50ba base: throw exception on cap-ref-count overflow
Ref #2120
2016-11-30 13:37:04 +01:00
Norman Feske
cfdbccc5c2 Remove blocking calls from root and parent RPCs
This is a redesign of the root and parent interfaces to eliminate
blocking RPC calls.

- New session representation at the parent (base/session_state.h)
- base-internal root proxy mechanism as migration path
- Redesign of base/service.h
- Removes ancient 'Connection::KEEP_OPEN' feature
- Interface change of 'Child', 'Child_policy', 'Slave', 'Slave_policy'
- New 'Slave::Connection'
- Changed child-construction procedure to be compatible with the
  non-blocking parent interface and to be easier to use
- The child's initial LOG session, its binary ROM session, and the
  linker ROM session have become part of the child's envirenment.
- Session upgrading must now be performed via 'env.upgrade' instead
  of performing a sole RPC call the parent. To make RAM upgrades
  easier, the 'Connection' provides a new 'upgrade_ram' method.

Issue #2120
2016-11-25 16:06:42 +01:00
Norman Feske
baf61df0fd base: new 'Registry' data structure
This data structure is meant as a safe alternative for a list wherever
the list is solely used to remember objects and iterate through them in
an unspecified order. One use case is the 'Service_registry'.
2016-11-25 15:30:58 +01:00
Norman Feske
513a3f1d37 base: new 'Id_space' data structure
This data structure allows the association of objects with IDs. IDs are
kept in an AVL tree. So in contrast to a bit allocator, the ID space can be
sparsely populated and does not need to be dimensioned. The lifetime of
an ID is bound to an 'Element' object, which relieves the programmer
from manually allocating/deallocating IDs for objects.

Issue #2120
2016-11-25 15:30:58 +01:00
Norman Feske
82107bef9b base: buffer session args in 'Connection'
This patch is a preparation of the forthcoming async parent interface.
Note that this patch increases the size of connection objects.
Furthermore it adds a diagnostic message whenever a connection fails.

Issue #2166
2016-11-25 15:27:28 +01:00
Norman Feske
ac1794ed7d base: add const operator * to 'Volatile_object' 2016-11-25 15:27:27 +01:00
Norman Feske
0e0f830a14 base: make Volatile_object noncopyable
Unfortunately, the volatile object does not inherit the noncopyable
attribute of the enclosed object. By making all volatile objects
noncopyable, we prevent the accidental copying of a noncopyable object
wrapped in a volatile object.
2016-11-25 15:27:27 +01:00
Norman Feske
b8e98f2355 base: forward args in Output::print
The original version copied the arguments, which does not work for the
output of complex types, in particular non-copyable objects.
2016-11-25 15:27:27 +01:00
Norman Feske
35fa67768f base: add 'Volatile_object::print' method
The method prints the message "<unconstructed>" if the object is not
available. Otherwise, it prints the encapsulated object.
2016-11-25 15:27:26 +01:00
Stefan Kalkowski
e1ec39e476 base: replace dump utilities in Allocator_avl
Replace 'dump()' debug utilities within Allocator_avl with Output::print
equivalents, and use the new Avl_tree::for_each utility to simplify
the implementation.

Ref #2159
2016-11-08 15:44:55 +01:00
Stefan Kalkowski
1542d92165 base: iterator for AVL tree (fix #2159) 2016-11-08 15:43:53 +01:00
Norman Feske
f577c451ef increase stack size of signal-proxy thread
This fixes the warning "small stack of 3996 bytes [...] may break Linux
signal handling" on 32-bit base-linux.
2016-11-08 15:26:33 +01:00
Norman Feske
784e728727 Clean ldso from using deprecated APIs
Issue #1987
2016-11-08 15:26:32 +01:00
Norman Feske
20faa8b84e base: 'String' constructor overload for literals
This overload covers the common case for initializing a string from a
literal without employing the 'Output' mechanism. This way, such
strings can by constructed without calling virtual functions, which in
turn makes the 'String' usable for the 'init_rtld' phase of the dynamic
linker.
2016-11-08 15:26:31 +01:00
Norman Feske
afed9cfd95 base: let string accept multiple arguments
Issue #2064
2016-11-08 15:26:30 +01:00
Norman Feske
9572ff9413 base: remove original PDBG from base/printf.h
This macro is superseded by base/debug.h.

Issue #2125
2016-11-08 15:26:27 +01:00
Emery Hemingway
ef5f36bf4e Redefine PDBG to use new log output function
PDBG is redefined in base/debug.h, an aide to development which is not
to be included in release code.

Fix #2125
2016-10-21 12:45:44 +02:00
Stefan Kalkowski
2a2e5c2df4 base-*: remove usage of printf
base generic code:
  * Remove unused verbosity code from mmio framework
  * Remove escape sequence end heuristic from LOG
  * replace Core_console with Core_log (no format specifiers)
  * move test/printf to test/log
  * remove `printf()` tests from the log test
  * check for exact match of the log test output
base-fiasco:
  * remove unused Fiasco::print_l4_threadid function
base-nova:
  * remove unused hexdump utility from core
base-hw:
  * remove unused Kernel::Thread::_print_* debug utilities
  * always print resource summary of core during startup
  * remove Kernel::Ipc_node::pd_label (not used anymore)
base*:
  * Turn `printf`,`PWRN`, etc. calls into their log equivalents

Ref #1987
Fix #2119
2016-10-21 12:39:36 +02:00
Christian Prochaska
3a1f852318 base: don't use the 'size' argument in 'Heap::free()'
The Heap reports that 'free()' does not rely on a valid 'size' argument,
so it should not use it.

Fixes #2113
2016-10-21 12:39:32 +02:00
Emery Hemingway
80558374f5 base: print support for Xml_node
Ref #1987
2016-10-21 12:39:29 +02:00
Norman Feske
e370e08e01 Define Genode::size_t as unsigned long
Fixes #2105
2016-10-21 12:39:29 +02:00
Christian Helmuth
fcf5bc9187 base: start signal-proxy thread on construction
Thanks @ssumpf for the investigation.
2016-09-09 11:48:43 +02:00
Stefan Kalkowski
e7d5b34fc5 base: String constructor for different lengths
Let the copy constructor compile for different CAPACITYs of
the String<CAPACITY> class.

Fix #2085
2016-09-09 11:48:43 +02:00
Christian Prochaska
d2e246d916 base: allow to set label in Log_connection
Fixes #2074
2016-08-29 17:29:36 +02:00
Norman Feske
17c79a9e23 base: avoid use of deprecated base/printf.h
Besides adapting the components to the use of base/log.h, the patch
cleans up a few base headers, i.e., it removes unused includes from
root/component.h, specifically base/heap.h and
ram_session/ram_session.h. Hence, components that relied on the implicit
inclusion of those headers have to manually include those headers now.

While adjusting the log messages, I repeatedly stumbled over the problem
that printing char * arguments is ambiguous. It is unclear whether to
print the argument as pointer or null-terminated string. To overcome
this problem, the patch introduces a new type 'Cstring' that allows the
caller to express that the argument should be handled as null-terminated
string. As a nice side effect, with this type in place, the optional len
argument of the 'String' class could be removed. Instead of supplying a
pair of (char const *, size_t), the constructor accepts a 'Cstring'.
This, in turn, clears the way let the 'String' constructor use the new
output mechanism to assemble a string from multiple arguments (and
thereby getting rid of snprintf within Genode in the near future).

To enforce the explicit resolution of the char * ambiguity, the 'char *'
overload of the 'print' function is marked as deleted.

Issue #1987
2016-08-29 17:27:10 +02:00
Norman Feske
892f21fd54 base: document error-message style conventions 2016-08-29 17:27:10 +02:00
Norman Feske
26a4534a37 base: helper for hex-formatted output of ranges 2016-08-29 17:27:09 +02:00
Norman Feske
9c2f229246 base: helper for printing individual characters 2016-08-29 17:27:09 +02:00
Johannes Schlatow
acd2a40076 base: print() functions for floating point types
Fixes #2055
2016-08-29 17:23:19 +02:00
Alexander Boettcher
5a0bc07d30 demo: make cancel_blocking working
- remove special handling from base-nova
- add to rpc_server where it actually should be applied to
- required to work for sel4 cancel_blocking

Issue #2044
2016-08-10 11:07:50 +02:00
Emery Hemingway
1ae0357171 base/sesson_label.h: do not prefix empty strings
Session_label prefix(a, b) shall not return ' -> b' or 'a -> '.

Issue #1787
2016-08-10 11:07:48 +02:00
Norman Feske
38a1e95979 base: add 'String::print' method
This way, we can conveniently output strings without calling the
string() method.
2016-07-15 11:38:27 +02:00
Norman Feske
62d65d00e0 Remove signal-source headers from public API
Those headers implement a platform-specific mechanism. They are never
used by components directly.

This patch also cleans up a few other remaining platform-specific
artifact such as the Fiasco.OC-specific assert.h.

Issue #1993
2016-07-15 11:38:25 +02:00
Emery Hemingway
2b8c1af9e0 remove 'filename' from ROM sesion args
Conveying the ROM filename as the final label element simplifies
routing policy and session construction.

Annotations by nfeske:

This commit also changes the ROM session to use base/log.h instead of
base/printf.h, which produced build error of VirtualBox because the
vbox headers have a '#define Log', which collides with the content of
base/log.h. Hence, this commit has to take precautions to resolve this
conflict.

The commit alse refines the previous session-label change by adding a
new 'Session_label::prefix' method and removing the use of 'char const *'
from this part of the API.

Fixes #1787
2016-07-11 13:24:36 +02:00
Emery Hemingway
f8337b511b Move Session_label from os to base
Session_label constructor now takes a bare string rather than a
serialized argument buffer.
Replace all instances of previous constructor with 'label_from_args'
function.

Issue #1787
2016-07-11 13:09:24 +02:00
Norman Feske
88b358c5ef Unification of native_capability.h
This patch establishes the sole use of generic headers across all
kernels. The common 'native_capability.h' is based on the version of
base-sel4. All traditional L4 kernels and Linux use the same
implementation of the capability-lifetime management. On base-hw, NOVA,
Fiasco.OC, and seL4, custom implementations (based on their original
mechanisms) are used, with the potential to unify them further in the
future.

This change achieves binary compatibility of dynamically linked programs
across all kernels.

Furthermore, the patch introduces a Native_capability::print method,
which allows the easy output of the kernel-specific capability
representation using the base/log.h API.

Issue #1993
2016-07-11 13:07:37 +02:00
Norman Feske
d71f0a9606 Cleanup of parent-cap handling
This patch alleviates the need for a Native_capability::Dst at the API
level. The former use case of this type as argument to
Deprecated_env::reinit uses the opaque Native_capability::Raw type
instead. The 'Raw' type contains the portion of the capability that is
transferred as-is when delegating the capability (i.e., when installing
the parent capability into a new component, or when installing a new
parent capability into a new forked Noux process). This information can
be retrieved via the new Native_capability::raw method.

Furthermore, this patch moves the functions for retriving the parent
capability to base/internal/parent_cap.h, which is meant to be
implemented in platform-specific ways. It replaces the former set of
startup/internal/_main_parent_cap.h headers.

Issue #1993
2016-07-11 13:05:27 +02:00
Norman Feske
f7bdd383e2 Remove base/native_types.h headers
Issue #1993
2016-07-11 12:06:50 +02:00
Christian Prochaska
29a12ab9a2 base: add 'Thread::mystack() function
The static 'Thread::mystack()' function returns the stack boundaries of
the calling thread. It is useful when a thread uses a diffent stack than
the primary one.

Fixes #2037
2016-07-11 12:06:05 +02:00
Christian Helmuth
c8fe0df0ed Overloads for printing signed/unsigned/bool base types
Issue #1942
2016-06-28 11:09:28 +02:00
Norman Feske
2030ae678e Supplement base/log.h with raw output function
This patch introduces the Genode::raw function that prints output
directly via a low-level kernel mechanism, if available.

On base-linux, it replaces the former 'raw_write_str' function.
On base-hw, it replaces the former kernel/log.h interface.

Fixes #2012
2016-06-22 12:21:42 +02:00
Christian Helmuth
cf771c10d6 Improve tokenizing to support XML comments
The whole XML comment has to be parsed as one XML tag to support strange
but valid combinations like

  <!---->
  <!--invisible-tag></invisible-tag-->

Fixes #1424
2016-06-06 09:37:47 +02:00
Josef Söntgen
941a71346a base: add print method for unsigned long long
Fixes #1991.
2016-06-04 13:45:27 +02:00
Alexander Boettcher
6289a2379d base: deny session creation if quota insufficient
Quota_exceeded message are of no use during session construction, since
the arguments of the ram_quota are used and no upgrade can take place (the
session construction failed and is so not available for upgrade)

Fixes #1983
2016-05-31 12:02:05 +02:00
Norman Feske
97a41394b4 Documentation changes on account of the book
This patch removes the outdates doc/architecture.txt since the
topics are covered by the book. We keep repos/os/doc/init.txt
because it contains a few details not present in the book (yet).
The patch streamlines the terminology a bit. Furthermore, it
slightly adjusts a few source-code comments to improve the book's
functional specification chapter.
2016-05-26 15:54:16 +02:00
Norman Feske
357b84835a base: add modern Root_component constructor 2016-05-26 15:54:15 +02:00
Martin Stein
1208d14681 hw: use kernel timer for timer driver
* Adds public timeout syscalls to kernel API
  * Kernel::timeout installs a timeout and binds a signal context to it that
    shall trigger once the timeout expired
  * With Kernel::timeout_max_us, one can get the maximum installable timeout
  * Kernel::timeout_age_us returns the time that has passed since the
    calling threads last timeout installation

* Removes all device specific back-ends for the base-hw timer driver and
  implements a generic back-end taht uses the kernel timeout API

* Adds assertions about the kernel timer frequency that originate from the
  requirements of the the kernel timeout API and adjusts all timers
  accordingly by using the their internal dividers

* Introduces the Kernel::Clock class. As member of each Kernel::Cpu object
  it combines the management of the timer of the CPU with a timeout scheduler.
  Not only the timeout API uses the timeout scheduler but also the CPUs job
  scheduler for installing scheduling timeouts.

* Introduces the Kernel::time_t type for timer tic values and values inherited
  from timer tics (like microseconds).

Fixes #1972
2016-05-26 15:54:15 +02:00
Christian Prochaska
2cde1d36c1 base: changes for GDB monitor
- add a new function 'binary_ready_hook_for_gdb()' in ldso. GDB can set a
  breakpoint at this function to know when ldso has loaded the binary
  into memory.
- get the thread state from the NOVA kernel immediately on 'pause()'

Fixes #1968
2016-05-23 15:52:49 +02:00
Norman Feske
807be83b1b Remove inconsistent use of 'is_' prefix
Fixes #1963
2016-05-23 15:52:39 +02:00
Norman Feske
15141f3ca7 Remove hand-crafted Rpc_functions typedefs 2016-05-23 15:52:39 +02:00
Norman Feske
ef9a7d2230 base: remove length limit of Type_list 2016-05-23 15:52:39 +02:00
Norman Feske
a99989af40 Separation of thread operations from CPU session
This patch moves the thread operations from the 'Cpu_session'
to the 'Cpu_thread' interface.

A noteworthy semantic change is the meaning of the former
'exception_handler' function, which used to define both, the default
exception handler or a thread-specific signal handler. Now, the
'Cpu_session::exception_sigh' function defines the CPU-session-wide
default handler whereas the 'Cpu_thread::exception_sigh' function
defines the thread-specific one.

To retain the ability to create 'Child' objects without invoking a
capability, the child's initial thread must be created outside the
'Child::Process'. It is now represented by the 'Child::Initial_thread',
which is passed as argument to the 'Child' constructor.

Fixes #1939
2016-05-23 15:52:39 +02:00
Norman Feske
a7b3072cc2 Pass Env & as first argument to connection objects
This patch supplements each existing connection type with an new
constructor that is meant to replace the original one. The new
one takes a reference to the component's environment as argument and
thereby does not rely on the presence of the globally accessible
'env()' interface.

The original constructors are marked as deprecated. Once we have
completely abolished the use of the global 'env()', we will remove them.

Fixes #1960
2016-05-23 15:52:37 +02:00
Norman Feske
8da737acfd base: add Attached_rom_dataspace::xml method
Issue #1959
2016-05-23 15:52:36 +02:00
Norman Feske
e0c0794f33 base: supplement comment of Xml_node constructor 2016-05-23 15:52:36 +02:00
Norman Feske
8d797105b3 Move Attach_*dataspace utils from os to base
Fixes #1958
2016-05-23 15:52:36 +02:00
Norman Feske
f6dec901bb base: remove Component::name from API
It turns out that the name function does not have much use in practice
except for naming the thread of the component's initial entrypoint. For
dynamically linked components, this thread is created by the dynamic
linker. It is named "ep" in these cases. Considering that we will
eventually turn all regular components into dynamically linked
executables, the additional information provided by the
Component::name() function remains unused. So it is better to not bother
the component developers with adding boilerplate code.
2016-05-23 15:49:56 +02:00
Norman Feske
ab88599682 base: document the return value of String::length 2016-05-23 15:49:56 +02:00
Norman Feske
fd401bdf53 Thread API cleanup
This patch cleans up the thread API and comes with the following
noteworthy changes:

- Introduced Cpu_session::Weight type that replaces a formerly used
  plain integer value to prevent the accidental mix-up of
  arguments.
- The enum definition of Cpu_session::DEFAULT_WEIGHT moved to
  Cpu_session::Weight::DEFAULT_WEIGHT
- New Thread constructor that takes a 'Env &' as first argument.
  The original constructors are now marked as deprecated. For the
  common use case where the default 'Weight' and 'Affinity' are
  used, a shortcut is provided. In the long term, those two
  constructors should be the only ones to remain.
- The former 'Thread<>' class template has been renamed to
  'Thread_deprecated'.
- The former 'Thread_base' class is now called 'Thread'.
- The new 'name()' accessor returns the thread's name as 'Name'
  object as centrally defined via 'Cpu_session::Name'. It is meant to
  replace the old-fashioned 'name' method that takes a buffer and size
  as arguments.
- Adaptation of the thread test to the new API

Issue #1954
2016-05-23 15:49:55 +02:00
Norman Feske
7b73d1d823 heap: add new-fashioned constructor 2016-05-09 13:25:11 +02:00
Norman Feske
1f395ae780 base: new interface for textual output
Issue #1942
2016-05-09 13:25:01 +02:00
Norman Feske
40a5af42eb Clean up base-library structure
This patch moves the base library from src/base to src/lib/base,
flattens the library-internal directory structure, and moves the common
parts of the library-description files to base/lib/mk/base.inc and
base/lib/mk/base-common.inc.

Furthermore, the patch fixes a few cosmetic issues (whitespace and
comments only) that I encountered while browsing the result.

Fixes #1952
2016-05-09 13:24:11 +02:00
Norman Feske
b8cd56cb90 Tweak slab allocators to use whole pages
Most slab allocators in core use a sliced heap as backing store. Since
sliced-heap allocations are performed at page-granularity, it is
sensible to dimension the slab blocks to fill whole pages.
2016-05-09 13:10:53 +02:00
Norman Feske
ba0545de07 Clean up 'Sliced_heap'
This patch cleans up the implementation of the sliced heap, adds a
constructor that takes references instead of pointers, and adds the
function 'meta_data_size' to determine the meta-data overhead per block.
The latter can be used to dimension slab allocators such that slab
blocks use whole pages.
2016-05-09 13:10:53 +02:00