revisions 846:897 into trunk, with approval and peer review of manager (Luca).
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with a *factor* of ~640x480. That means ~64*48*10^6*3 bytes = a ~1.1 Gb RAM pixmap.
The problem didn't show in versions of cairo >= 1.2 because it automagically
clips (yeah, cairo programmers *are* smart :-))
It is temporary fixed for the moment, will be made better asap.
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to removing all of its resources and all of its processes, but
faster)
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the user may now add plugin directories,
policy directories, and set the simulation
speed.
- Added some menu voice to the main window.
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- Now CPUPolicy has a callback method for scripting languages, but it is up to derived classes to take
mutexes and set the value when needed (maybe we can improve this?)
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- Drop the old SchedulablesWidget in favor of a simple Gtk::TreeView
- Update the GuiBuilder consequentially
- FIXME: in cairo_widget.cc : have we to scale the context before or after
drawing on it?
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- Added a wizard just for show, but there is no
interesting cpu-scheduling policy to test it with
- Better textual output.
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NOTE: to use it _SG_SCHEDULABLES_TREE_WIDGET must be defined, which is obvioulsy not, by default
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imlpementation, so this version should not be considered definitive.
please give me an other day to check it.
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- Added a base class for cpu policy exceptions to make simpler their catching
- Implemented all numeric fields in dialogs with spinboxes, with bounds checking
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- Changed the way syntactically incorrect python policies are handled, we no more exit abruptly
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that the size of the history was the coordinate of the instant
to add.
- Corrected a bug in step forward, which was incorrectly assuming
that all processes started at instant 0.
- Added a wizard to show a bug in step forward, which thinks that
the simulation is terminated while it isn't since some processes
are still future.
- Commented some unused code in step forward (extendThread()).
- Still to extract methods from Extender and provide them to
step forward in a more suitable (static) way.
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- Fix throwing of exceptions from sgpem::Module
- **THOU SHALL ALWAYS UPDATE THY MAKEFILES, OR THE WRATH OF GOD
WILL DESCEND UPON THEE**
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- Setup makefile for xmlsave plugin. It still can`t be activated. why?
- Added a temporary command SAVE to commandline interface to try serialization
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at all. Compiles and runs, but the output is not
correct. Anyway, now it is just a matter of logics :P
- Corrected some minor bugs in step forward.
- Step forward is now rather messy, but still better than
four hours ago.. altough this can be hard to believe.
- Added some wizards that help finding bugs.
- Rewritten dyn process get_state as it was guilty of
premature optimization :)
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copy constructor and by the add_resource and remove_resource methods
found in ConcreteHistory.
- Scheduler now adds the requests in the queue when appropriate, and
removes them when exhausted.
- Still to implement the management of the state of requests depending
on their position in the queue
- Still to implement the way threads block depending on the state of
their requests
- step_forward now reuses some bunch of code taken from the prototype
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derived widget
- Add History::set_notify_enabled() for usage by the frontend
(for example, when loading from file, you'll want to call
set_notify_enabled(false) before starting)
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an abstract base class, and I'll start working out the
adjustement / resizing problems (they're not easy to work out
correctly).
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- Added exception specifications to the methods of the serializer interface and xml plugin
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- Make test-history run by commenting some "dangerous" lines
- Added a couple of comments to SchedulablesWidget::update() in the hope the may be useful to others in finding where the bug resides...
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their elapsed time
- requests are now behaving nicely, since they are raised at the correct
instant, and terminated at the right instant
- the ready queues are still not ready, tough :(, anyway, now there is
really nothing else to do before them.
- stepforward is looking much more uglier (if possible).
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when that thread had just been given the cpu.
fixed a bug involving text-simulation displaying the wrong timestamp for
each snaphot. Now the first snapshot printed is correctly tagged "-1".
added (for the sake of lazyness) a method to readyqueue letting anyone
delete the first element on the queue. Not having this would imply
rebuilding the whole queue each time a thread was selected to run.
Small commits avoid complex mergings.
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will SIGSEGV. I will fix this asap, in the meantime use the cmdline
interface.
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the step went okay or otherwise if the simulation ended
- Fix simulation states in concrete_simulation.cc
- Manage end of input (now CTRL+D exits the program, and
you can redirect a file in input knowing that at EOF
sgpemv2 will terminate)
- Fix a bug in Scheduler that didn't add the newly created
environment to History when the simulation ended, thus leading
both to a memory leak and an inconsistency in representing
the simulation
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- Added the "continuous" attribute for the SET and GET commands
- Now resource ids are checked for validity
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- Fixed bug in get_parameter<bool> in TextSimulation
- Written some new code for visualization of the simulation
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- Start code for double buffering in custom widgets, using
an off-screen pixmap. Problem: we don't know the height from the
beginning
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- Started code for printing the state of the scheduling
- Fixed a bug in the copy constructor of DynamicThread
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- TODO: fix test-history consequentially (request queues should be prepared
by Scheduler or by Environment?)
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- Fix test-history wrong index variable that made the program try to poke its nose
where it shouldn't
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make life easier to Scheduler
- Go on implementing a bit more of Scheduler::step_forward()
- Remove "places" from SubRequest
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- Removed a bunch of FIXME from text_simulation.cc, now TextSimulation fully cooperates with Environment and History
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> - Completed ConcreteSimulation, i think it is all we need at the moment...
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- Layout of output is not tested so it will surely look odd the first time it is run...
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Paint a red clown nose just to show the humour of the thing, and that it
works(?).
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vector
- Split push_back in constructors on two lines so the compiler warns
us if returned vectors are temporary objects, or do not match the
expected type
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- This is not so important, but the app now segfaults because of this "improvement", don`t say it`s my fault, from what I can understand, glib crashes at some time in between the call to parse_options() is terminated and the call to start_gui() is performed
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- To make sure libraries are not loaded multiple times, only .so files are considered. Beware that this is not portable
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signals
- Remember that sigc::bind exists for passing extra parameters to
called methods/functions
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- Fix SWIG interface to correctly manage things
- PythonPolicyManager isn't a singleton anymore. Since I did this in
a bit of a hurry, check the modifications are right
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- Delete the "serialize()" method of concrete_environment, since useless
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- Work on step_forward() a little more
- Add extra check inside dynamic_thread()::decrease_remaining_time()
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from configure. This is mainly there for buggy compilers / binutils.
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- Commented a lot of code to make it compile-able. But still it doesn`t link (at least for me...)
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- Delegate plugin loading to PluginManager so that it can
be tested
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if they want to schedule Threads or Processes altogether
- Move setter methods for last_acquisition/last_release from
DynamicSchedulable to DynamicThread
- Rewrite aforesaid methods, along with the respective getter
methods, into Dynamic(Thread|Process)
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rather thant ${prefix}/include/sgpemv2: users will
be able to use directives like "#include <sgpemv2/scheduler.hh>"
in their headers, which reduces name clashes.
- Make _mutex a protected member of Singleton, so that
inheriters can recycle it :-)
- Add exclusive access control for step_forward()
- Add two states (future and exhausted) to Request
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- Add get_request() method to (Dynamic)SubRequest.
- Implement most of ConcreteHistory. It is a fairly complex class,
with some real evilness in it. It should be thouroughly documented
ASAP.
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- TODO Integrate this new plugin management system into the application
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- Fixed all Dynamic and Static entities lacking proper destructors:
Dynamic entities need to delete Dynamic children, Static entities
need only to delete them from the list of their siblings
- Added methods to get Static "core" from Dynamic*.
- Now get_core() is a pure virtual function into DynamicSchedulable.
A quite nice solution(?), really, if I can say that myself... ;-)
- ConcreteHistory is half-implemented. It's the other half that
worries me.
- TODO: finish off ConcreteHistory, and check that things get destroyed
properly (no leaks allowed, use valgrind).
- TODO: rework Simulation
- TODO: Scheduler rewrite
- *A side note*: this code is becoming a mess. I prefer references over
pointers, but someone other prefer pointers over references, and what
happens is that you've to continously pass from one to another when
invoking other methods... this is bad.
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- Fix ReadyQueue constructor
- Change DynamicSubRequest to take an int as a parameter
- Implement ConcreteEnvironment::get_request_queue() (my word, it's ugly!)
- Please note that it still doesn't compile right: ConcreteHistory
and Scheduler need to be radically changed
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- Add interfaces for Process and Thread into the "sgpem.i" SWIG
interface file, change DynamicSchedulable into Schedulable
- Add dynamic_cast for the return value of ReadyQueue::get_item_at()
into the pyloader "sgpem.i" SWIG interface, so that a Schedulable
can be either recognized as a Thread or a Process
- TODO: wrap STL exceptions in SWIG interface
- Please note that code won't compile until the new History and
Scheduler::step_forward() will be in place. This is a known issue.
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(when appropriate)
- FIXME: see if const std::vector<Something*>& let you invoke
a non-const method of *Something. Else copy these values to
const std::vector<const Something*> before returning.
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placeholder for the ready queue, needed by environment, and factorized
stubs for tests in a separate directory. Updated makefile including environment, concrete_environment, ready_queue, but NOT the stubs and/or the tests.
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- Explicitly instantiate Singleton templates to be exported from libbackend.so
- Install only header files that are backend interfaces to be exposed to the user
- Don't use full path for including templates in header files
- Instantiate a couple of smart_ptr templates to have their symbols exported outside the DSO. This happens in history.cc. FIXME: the interface for History will definitely need to be reworked, and the two smart_ptr explicit instantiations removed.
- Change SWIG exported interface to make use of Schedulable instead of (Dynamic|Static)Schedulable
- Fix provided policies to make use of the new interface
- TODO: limit the use of smart_ptrs.
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- Synchronized DynamicSchedulable and DynamicProcess with changes in design
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- Fixed a bug preventing registration of managers in PoliciesGatekeeper
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- Renamed SchedulableStatus to DynamicSchedulable
- Implemented almost all methods of DynamicSchedulable
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to the end of output
- Use GraphicalTerminalIO::read_command into GraphicalTerminalIO::onSend()
as per specs (fixes a program crash)
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- Put mutex and global _ret_val variable into
ScriptAdapter instead of the global space, space which is
anyway not accessible after decref'ing the corresponding
python module
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- Implement system to dinamically pass plugins and policies search paths to
the sgpemv2 binary and tests (class GlobalSettings)
- Drastically reduce usage of hardcoded paths in code except as
default overridable values
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hierarchy:
- make room for future plugins
- separate real plugins from their satellite helper
data
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PythonPolicy in Scheduler, but it cheerfully
segfaults python...
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- Adjust installation of backend header files, so users
can write their own plugins (needs to be documented)
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on Window$ unless you change the string "libpyloader" to
"pyloader" into main.cc)
- Fix Makefile to support module creation and loading
- 2DO:
- Add a class into backend to load and manage plugins
- Install plugins into separate directory
- Remove hardcoded paths
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- Re-enable FCFS sorting function
- Correct bug in PythonPolicy that wronged return value
of is_pre_emptible()
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tchernobog
elvez
matrevis
paolo
fpaparel
johnny