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2013-11-25sim: simulate with multiple threads and event queuesSteve Reinhardt ext:(%2C%20Nilay%20Vaish%20%3Cnilay%40cs.wisc.edu%3E%2C%20Ali%20Saidi%20%3CAli.Saidi%40ARM.com%3E)
This patch adds support for simulating with multiple threads, each of which operates on an event queue. Each sim object specifies which eventq is would like to be on. A custom barrier implementation is being added using which eventqs synchronize. The patch was tested in two different configurations: 1. ruby_network_test.py: in this simulation L1 cache controllers receive requests from the cpu. The requests are replied to immediately without any communication taking place with any other level. 2. twosys-tsunami-simple-atomic: this configuration simulates a client-server system which are connected by an ethernet link. We still lack the ability to communicate using message buffers or ports. But other things like simulation start and end, synchronizing after every quantum are working. Committed by: Nilay Vaish
2013-09-04arch: Resurrect the NOISA build target and rename it NULLAndreas Hansson
This patch makes it possible to once again build gem5 without any ISA. The main purpose is to enable work around the interconnect and memory system without having to build any CPU models or device models. The regress script is updated to include the NULL ISA target. Currently no regressions make use of it, but all the testers could (and perhaps should) transition to it. --HG-- rename : build_opts/NOISA => build_opts/NULL rename : src/arch/noisa/SConsopts => src/arch/null/SConsopts rename : src/arch/noisa/cpu_dummy.hh => src/arch/null/cpu_dummy.hh rename : src/cpu/intr_control.cc => src/cpu/intr_control_noisa.cc
2013-02-19scons: Add warning for missing declarationsAndreas Hansson
This patch enables warnings for missing declarations. To avoid issues with SWIG-generated code, the warning is only applied to non-SWIG code.
2013-01-07stats: Fix swig wrapping for Tick in statsSascha Bischoff
Tick was not correctly wrapped for the stats system, and therefore it was not possible to configure the stats dumping from the python scripts without defining Ticks as long long. This patch fixes the wrapping of Tick by copying the typemap of uint64_t to Tick.
2012-11-16sim: have a curTick per eventqNilay Vaish
This patch adds a _curTick variable to an eventq. This variable is updated whenever an event is serviced in function serviceOne(), or all events upto a particular time are processed in function serviceEvents(). This change helps when there are eventqs that do not make use of curTick for scheduling events.
2012-11-02sim: Add SWIG interface for SerializableAndreas Sandberg
This changeset adds a SWIG interface for the Serializable class, which fixes a warning when compiling the SWIG interface for the event queue. Currently, the only method exported is the name() method.
2012-11-02sim: Move the draining interface into a separate base classAndreas Sandberg
This patch moves the draining interface from SimObject to a separate class that can be used by any object needing draining. However, objects not visible to the Python code (i.e., objects not deriving from SimObject) still depend on their parents informing them when to drain. This patch also gets rid of the CountedDrainEvent (which isn't really an event) and replaces it with a DrainManager.
2012-10-15Port: Add protocol-agnostic ports in the port hierarchyAndreas Hansson
This patch adds an additional level of ports in the inheritance hierarchy, separating out the protocol-specific and protocl-agnostic parts. All the functionality related to the binding of ports is now confined to use BaseMaster/BaseSlavePorts, and all the protocol-specific parts stay in the Master/SlavePort. In the future it will be possible to add other protocol-specific implementations. The functions used in the binding of ports, i.e. getMaster/SlavePort now use the base classes, and the index parameter is updated to use the PortID typedef with the symbolic InvalidPortID as the default.
2012-09-25Statistics: Add a function to configure periodic stats dumpingSascha Bischoff
This patch adds a function, periodicStatDump(long long period), which will dump and reset the statistics every period. This function is designed to be called from the python configuration scripts. This allows the periodic stats dumping to be configured more easilly at run time. The period is currently specified as a long long as there are issues passing Tick into the C++ from the python as they have conflicting definitions. If the period is less than curTick, the first occurance occurs at curTick. If the period is set to 0, then the event is descheduled and the stats are not periodically dumped. Due to issues when resumung from a checkpoint, the StatDump event must be moved forward such that it occues AFTER the current tick. As the function is called from the python, the event is scheduled before the system resumes from the checkpoint. Therefore, the event is moved using the updateEvents() function. This is called from simulate.py once the system has resumed from the checkpoint. NOTE: It should be noted that this is a fairly temporary patch which re-adds the capability to extract temporal information from the communication monitors. It should not be used at the same time as anything that relies on dumping the statistics based on in simulation events i.e. a context switch.
2012-09-19AddrRange: Transition from Range<T> to AddrRangeAndreas Hansson
This patch takes the final plunge and transitions from the templated Range class to the more specific AddrRange. In doing so it changes the obvious Range<Addr> to AddrRange, and also bumps the range_map to be AddrRangeMap. In addition to the obvious changes, including the removal of redundant includes, this patch also does some house keeping in preparing for the introduction of address interleaving support in the ranges. The Range class is also stripped of all the functionality that is never used. --HG-- rename : src/base/range.hh => src/base/addr_range.hh rename : src/base/range_map.hh => src/base/addr_range_map.hh
2012-06-05sim: Remove FastAllocAli Saidi
While FastAlloc provides a small performance increase (~1.5%) over regular malloc it isn't thread safe. After removing FastAlloc and using tcmalloc I've seen a performance increase of 12% over libc malloc when running twolf for ARM.
2012-06-05stats: Provide a mechanism to get a callback when stats are dumped.Mitchell Hayenga
This mechanism is useful for dumping output that is correlated with stats dumping, but isn't tracked by the gem5 statistics.
2012-05-10stats: track if the stats have been enabled and prevent requesting master idAli Saidi
Track the point in the initialization where statistics have been registered. After this point registering new masterIds can no longer work as some SimObjects may have sized stats vectors based on the previous value. If someone tries to register a masterId after this point the simulator executes fatal().
2012-03-30MEM: Introduce the master/slave port sub-classes in C++William Wang
This patch introduces the notion of a master and slave port in the C++ code, thus bringing the previous classification from the Python classes into the corresponding simulation objects and memory objects. The patch enables us to classify behaviours into the two bins and add assumptions and enfore compliance, also simplifying the two interfaces. As a starting point, isSnooping is confined to a master port, and getAddrRanges to slave ports. More of these specilisations are to come in later patches. The getPort function is not getMasterPort and getSlavePort, and returns a port reference rather than a pointer as NULL would never be a valid return value. The default implementation of these two functions is placed in MemObject, and calls fatal. The one drawback with this specific patch is that it requires some code duplication, e.g. QueuedPort becomes QueuedMasterPort and QueuedSlavePort, and BusPort becomes BusMasterPort and BusSlavePort (avoiding multiple inheritance). With the later introduction of the port interfaces, moving the functionality outside the port itself, a lot of the duplicated code will disappear again.
2012-01-07Merge with main repository.Gabe Black
2011-11-07SE/FS: Remove FULL_SYSTEM from swig.Gabe Black
2011-10-31GCC: Get everything working with gcc 4.6.1.Gabe Black
And by "everything" I mean all the quick regressions.
2011-10-20SimObject: add export_method* hooks to export C++ methods to PythonSteve Reinhardt
Replace the (broken as of previous changeset) swig_objdecl() method that allowed/forced you to substitute a whole new C++ struct definition for SWIG to wrap with a set of export_method* hooks that let you just declare a set of C++ methods (or other declarations) that get inserted in the auto-generated struct. Restore the System get/setMemoryMode methods, and use this mechanism to specialize SimObject as well, eliminating teh need for sim_object.i. Needed bits of sim_object.i are moved to the new pyobject.i. Also sucked a little SimObject specialization into cxx_param_decl() allowing us to get rid of src/sim/sim_object_params.hh. Now the generation and wrapping of the base SimObject param struct is more in line with how derived objects are handled. --HG-- rename : src/python/swig/sim_object.i => src/python/swig/pyobject.i
2011-08-19Stats: Add a sparse histogram stat object.Thomas Grass
2011-05-12stats: delete mysql supportNathan Binkert
we can add it back within python in some future changeset
2011-05-12stats: move code that loops over all stats into pythonNathan Binkert
2011-05-12stats: better expose statistics to python.Nathan Binkert
Build a python list and dict of all stats and expose flags properly. --HG-- rename : src/python/m5/stats.py => src/python/m5/stats/__init__.py
2011-04-28event: fix PythonEventNathan Binkert
order of %includes since they matter for this case
2011-04-15trace: reimplement the DTRACE function so it doesn't use a vectorNathan Binkert
At the same time, rename the trace flags to debug flags since they have broader usage than simply tracing. This means that --trace-flags is now --debug-flags and --trace-help is now --debug-help
2011-04-15includes: sort all includesNathan Binkert
2011-03-18swig: get rid of m5.internal.random module (swig/random.i)Steve Reinhardt
Thanks to swig this was interfering with the standard Python random module. The only function in that module was seed(), which erroneously called srand48(). Moved the function to m5.internal.core, renamed it seedRandom(), and made it call random_mt.init() instead.
2011-01-07Replace curTick global variable with accessor functions.Steve Reinhardt
This step makes it easy to replace the accessor functions (which still access a global variable) with ones that access per-thread curTick values.
2011-01-07stats: rename StatEvent() function to schedStatEvent().Steve Reinhardt
This follows the style rules and is more descriptive.
2011-01-03Make commenting on close namespace brackets consistent.Steve Reinhardt
Ran all the source files through 'perl -pi' with this script: s|\s*(};?\s*)?/\*\s*(end\s*)?namespace\s*(\S+)\s*\*/(\s*})?|} // namespace $3|; s|\s*};?\s*//\s*(end\s*)?namespace\s*(\S+)\s*|} // namespace $2\n|; s|\s*};?\s*//\s*(\S+)\s*namespace\s*|} // namespace $1\n|; Also did a little manual editing on some of the arch/*/isa_traits.hh files and src/SConscript.
2010-12-30swig: use <> for system %includes instead of ""Nathan Binkert
2010-11-23Copyright: Add AMD copyright to the param changes I just made.Gabe Black
2010-11-23Params: Add parameter types for IP addresses in various forms.Gabe Black
New parameter forms are: IP address in the format "a.b.c.d" where a-d are from decimal 0 to 255. IP address with netmask which is an IP followed by "/n" where n is a netmask length in bits from decimal 0 to 32 or by "/e.f.g.h" where e-h are from decimal 0 to 255 and which is all 1 bits followed by all 0 bits when represented in binary. These can also be specified as an integral IP and netmask passed in separately. IP address with port which is an IP followed by ":p" where p is a port index from decimal 0 to 65535. These can also be specified as an integral IP and port value passed in separately.
2010-11-19SCons: Support building without an ISAAli Saidi
2010-09-09scons: Stop building the big monolithic swigged params moduleNathan Binkert
kill params.i and create a separate .i for each object (param, enums, etc.)
2010-09-09swig: don't override SWIG_name anymoreNathan Binkert
It doesn't appear to be necessary and it is somewhat odd. I'm pretty sure that the package parameter to %module does whatever this might have been before. It's necessary in future revisions anyway.
2010-08-17sim: revamp unserialization procedureSteve Reinhardt
Replace direct call to unserialize() on each SimObject with a pair of calls for better control over initialization in both ckpt and non-ckpt cases. If restoring from a checkpoint, loadState(ckpt) is called on each SimObject. The default implementation simply calls unserialize() if there is a corresponding checkpoint section, so we get backward compatibility for existing objects. However, objects can override loadState() to get other behaviors, e.g., doing other programmed initializations after unserialize(), or complaining if no checkpoint section is found. (Note that the default warning for a missing checkpoint section is now gone.) If not restoring from a checkpoint, we call the new initState() method on each SimObject instead. This provides a hook for state initializations that are only required when *not* restoring from a checkpoint. Given this new framework, do some cleanup of LiveProcess subclasses and X86System, which were (in some cases) emulating initState() behavior in startup via a local flag or (in other cases) erroneously doing initializations in startup() that clobbered state loaded earlier by unserialize().
2010-08-17sim: move iterating over SimObjects into Python.Steve Reinhardt
2010-07-05sim: fold StartupCallback into SimObjectSteve Reinhardt
There used to be a reason to have StartupCallback be a separate object, but not any more. Now it's just confusing.
2009-06-01swig: %include Event before PythonEvent so python gets the subclass correct.Nathan Binkert
Before this change, some versions of swig would cause PythonEvent to be derived from object instead of Event
2009-05-17includes: sort includes againNathan Binkert
2009-05-17types: Move stuff for global types into src/base/types.hhNathan Binkert
--HG-- rename : src/sim/host.hh => src/base/types.hh
2009-04-22stats: expose statistics to pythonNathan Binkert
2009-04-22stats: remove simplescalar compatibility for printingNathan Binkert
2009-03-05stats: create an enable phase, and a prepare phase.Nathan Binkert
Enable more or less takes the place of check, but also allows stats to do some other configuration. Prepare moves all of the code that readies a stat for dumping into a separate function in preparation for supporting serialization of certain pieces of statistics data. While we're at it, clean up the visitor code and some of the python code.
2009-01-19python: Rework how things are importedNathan Binkert
2008-11-10python: Fix the reference counting for python events placed on the eventq.Nathan Binkert
We need to add a reference when an object is put on the C++ queue, and remove a reference when the object is removed from the queue. This was not happening before and caused a memory problem.
2008-10-27Checkpointing: createCountedDrain function, it was only returning an Event, ↵Clint Smullen
which does not expose a setCount method to Python. Signed-off By: Ali Saidi
2008-10-10output: Make panic/fatal/warn more flexible so we can add some new ones.Nathan Binkert
The major thrust of this change is to limit the amount of code duplication surrounding the code for these functions. This code also adds two new message types called info and hack. Info is meant to be less harsh than warn so people don't get confused and start thinking that the simulator is broken. Hack is a way for people to add runtime messages indicating that the simulator just executed a code "hack" that should probably be fixed. The benefit of knowing about these code hacks is that it will let people know what sorts of inaccuracies or potential bugs might be entering their experiments. Finally, I've added some flags to turn on and off these message types so command line options can change them.
2008-10-09eventq: Major API change for the Event and EventQueue structures.Nathan Binkert
Since the early days of M5, an event needed to know which event queue it was on, and that data was required at the time of construction of the event object. In the future parallelized M5, this sort of requirement does not work well since the proper event queue will not always be known at the time of construction of an event. Now, events are created, and the EventQueue itself has the schedule function, e.g. eventq->schedule(event, when). To simplify the syntax, I created a class called EventManager which holds a pointer to an EventQueue and provides the schedule interface that is a proxy for the EventQueue. The intent is that objects that frequently schedule events can be derived from EventManager and then they have the schedule interface. SimObject and Port are examples of objects that will become EventManagers. The end result is that any SimObject can just call schedule(event, when) and it will just call that SimObject's eventq->schedule function. Of course, some objects may have more than one EventQueue, so this interface might not be perfect for those, but they should be relatively few.
2008-08-04Get rid of outputStream... wasn't really being usedSteve Reinhardt
(except for warn()) and new -r/-e options make it not worth fixing.