+// Written by David Megginson, started 2000-12
+//
+// Copyright (C) 2000 David Megginson, david@megginson.com
+//
+// This program is free software; you can redistribute it and/or
+// modify it under the terms of the GNU General Public License as
+// published by the Free Software Foundation; either version 2 of the
+// License, or (at your option) any later version.
+//
+// This program is distributed in the hope that it will be useful, but
+// WITHOUT ANY WARRANTY; without even the implied warranty of
+// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
+// General Public License for more details.
+//
+// You should have received a copy of the GNU General Public License
+// along with this program; if not, write to the Free Software
+// Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
+//
+// $Id$
+
+#ifdef HAVE_CONFIG_H
+# include <simgear_config.h>
+#endif
#include <simgear/debug/logstream.hxx>
#include <simgear/timing/timestamp.hxx>
#include "exception.hxx"
#include "subsystem_mgr.hxx"
+#include <simgear/math/SGMath.hxx>
+#include "SGSmplstat.hxx"
+
+const int SG_MAX_SUBSYSTEM_EXCEPTIONS = 4;
-\f
////////////////////////////////////////////////////////////////////////
// Implementation of SGSubsystem
////////////////////////////////////////////////////////////////////////
+SGSubsystemTimingCb SGSubsystem::reportTimingCb = NULL;
+void* SGSubsystem::reportTimingUserData = NULL;
SGSubsystem::SGSubsystem ()
: _suspended(false)
{
}
+void
+SGSubsystem::shutdown ()
+{
+}
+
void
SGSubsystem::bind ()
{
return _suspended;
}
-
-void
-SGSubsystem::printTimingInformation ()
-{
- SGTimeStamp startTime, endTime;
- long duration;
- for ( eventTimeVecIterator i = timingInfo.begin();
- i != timingInfo.end();
- i++) {
- if (i == timingInfo.begin()) {
- startTime = i->getTime();
- } else {
- endTime = i->getTime();
- duration = (endTime - startTime);
- startTime = endTime;
- SG_LOG(SG_GENERAL, SG_ALERT, "- Getting to timestamp : " << i->getName() << " takes " << duration << " usec.");
- }
- }
-}
-
-
-
-void SGSubsystem::stamp(string name)
+void SGSubsystem::stamp(const string& name)
{
- SGTimeStamp now;
- now.stamp();
- timingInfo.push_back(TimingInfo(name, now));
+ timingInfo.push_back(TimingInfo(name, SGTimeStamp::now()));
}
\f
// Implementation of SGSubsystemGroup.
////////////////////////////////////////////////////////////////////////
-SGSubsystemGroup::SGSubsystemGroup ()
+class SGSubsystemGroup::Member
+{
+private:
+ Member (const Member &member);
+public:
+ Member ();
+ virtual ~Member ();
+
+ virtual void update (double delta_time_sec);
+
+ void reportTiming(void) { if (reportTimingCb) reportTimingCb(reportTimingUserData, name, &timeStat); }
+ void updateExecutionTime(double time) { timeStat += time;}
+
+ SampleStatistic timeStat;
+ std::string name;
+ SGSubsystem * subsystem;
+ double min_step_sec;
+ double elapsed_sec;
+ bool collectTimeStats;
+ int exceptionCount;
+};
+
+
+
+SGSubsystemGroup::SGSubsystemGroup () :
+ _fixedUpdateTime(-1.0),
+ _updateTimeRemainder(0.0)
{
}
SGSubsystemGroup::~SGSubsystemGroup ()
{
- for (unsigned int i = 0; i < _members.size(); i++)
+ // reverse order to prevent order dependency problems
+ for (unsigned int i = _members.size(); i > 0; i--)
{
- _members[i]->printTimingStatistics();
- delete _members[i];
+ delete _members[i-1];
}
}
_members[i]->subsystem->reinit();
}
+void
+SGSubsystemGroup::shutdown ()
+{
+ // reverse order to prevent order dependency problems
+ for (unsigned int i = _members.size(); i > 0; i--)
+ _members[i-1]->subsystem->shutdown();
+}
+
void
SGSubsystemGroup::bind ()
{
void
SGSubsystemGroup::unbind ()
{
- for (unsigned int i = 0; i < _members.size(); i++)
- _members[i]->subsystem->unbind();
+ // reverse order to prevent order dependency problems
+ for (unsigned int i = _members.size(); i > 0; i--)
+ _members[i-1]->subsystem->unbind();
}
void
SGSubsystemGroup::update (double delta_time_sec)
{
- for (unsigned int i = 0; i < _members.size(); i++)
- {
- SGTimeStamp start, now;
- start.stamp();
- _members[i]->update(delta_time_sec); // indirect call
- now.stamp();
- long b = ( now - start );
- _members[i]->updateExecutionTime(b);
- double threshold = _members[i]->getTimeWarningThreshold();
- if (( b > threshold ) && (b > 10000)) {
- _members[i]->printTimingInformation(b);
- }
+ int loopCount = 1;
+ // if dt == 0.0, we are paused, so we need to run one iteration
+ // of our members; if we have a fixed update time, we compute a
+ // loop count, and locally adjust dt
+ if ((delta_time_sec > 0.0) && (_fixedUpdateTime > 0.0)) {
+ double localDelta = delta_time_sec + _updateTimeRemainder;
+ loopCount = SGMiscd::roundToInt(localDelta / _fixedUpdateTime);
+ _updateTimeRemainder = delta_time_sec - (loopCount * _fixedUpdateTime);
+ delta_time_sec = _fixedUpdateTime;
}
+
+ bool recordTime = (reportTimingCb != NULL);
+ SGTimeStamp timeStamp;
+ while (loopCount-- > 0) {
+ for (unsigned int i = 0; i < _members.size(); i++)
+ {
+ if (recordTime)
+ timeStamp = SGTimeStamp::now();
+
+ _members[i]->update(delta_time_sec); // indirect call
+
+ if ((recordTime)&&(reportTimingCb))
+ {
+ timeStamp = SGTimeStamp::now() - timeStamp;
+ _members[i]->updateExecutionTime(timeStamp.toUSecs());
+ }
+ }
+ } // of multiple update loop
}
-void
-SGSubsystemGroup::collectDebugTiming(bool collect)
+void
+SGSubsystemGroup::reportTiming(void)
{
- for (unsigned int i = 0; i < _members.size(); i++)
+ for (unsigned int i = _members.size(); i > 0; i--)
{
- _members[i]->collectDebugTiming(collect);
+ _members[i-1]->reportTiming();
}
}
}
void
-SGSubsystemGroup::Member::printTimingStatistics ()
+SGSubsystemGroup::set_fixed_update_time(double dt)
{
- if (collectTimeStats) {
- double minTime = timeStat.min() / 1000;
- double maxTime = timeStat.max() / 1000;
- double meanTime = timeStat.mean() / 1000;
- double stddev = timeStat.stdDev() / 1000;
-
- char buffer[256];
- snprintf(buffer, 256, "Timing summary for %20s.\n"
- "- mean time: %04.2f ms.\n"
- "- min time : %04.2f ms.\n"
- "- max time : %04.2f ms.\n"
- "- stddev : %04.2f ms.\n", name.c_str(), meanTime, minTime, maxTime, stddev);
- SG_LOG(SG_GENERAL, SG_ALERT, buffer);
- }
+ _fixedUpdateTime = dt;
}
-
bool
SGSubsystemGroup::has_subsystem (const string &name) const
{
subsystem(0),
min_step_sec(0),
elapsed_sec(0),
- collectTimeStats(false)
+ exceptionCount(0)
{
}
SGSubsystemGroup::Member::update (double delta_time_sec)
{
elapsed_sec += delta_time_sec;
- if (elapsed_sec >= min_step_sec) {
- if (!subsystem->is_suspended()) {
- subsystem->update(elapsed_sec);
- elapsed_sec = 0;
- }
+ if (elapsed_sec < min_step_sec) {
+ return;
}
-}
-
-
-void
-SGSubsystemGroup::Member::printTimingInformation(double time)
-{
- if (collectTimeStats) {
- SG_LOG(SG_GENERAL, SG_ALERT, "Subsystem Timing Alert : " << time << " " << name);
- subsystem->printTimingInformation();
- }
-}
-
-double SGSubsystemGroup::Member::getTimeWarningThreshold()
-{
- return (timeStat.mean() + 3 * timeStat.stdDev());
-}
-
-void SGSubsystemGroup::Member::updateExecutionTime(double time)
-{
- if (collectTimeStats) {
- timeStat += time;
+
+ if (subsystem->is_suspended()) {
+ return;
+ }
+
+ try {
+ subsystem->update(elapsed_sec);
+ elapsed_sec = 0;
+ } catch (sg_exception& e) {
+ SG_LOG(SG_GENERAL, SG_ALERT, "caught exception processing subsystem:" << name
+ << "\nmessage:" << e.getMessage());
+
+ if (++exceptionCount > SG_MAX_SUBSYSTEM_EXCEPTIONS) {
+ SG_LOG(SG_GENERAL, SG_ALERT, "(exceptionCount=" << exceptionCount <<
+ ", suspending)");
+ subsystem->suspend();
+ }
}
}
-
-
-\f
////////////////////////////////////////////////////////////////////////
// Implementation of SGSubsystemMgr.
////////////////////////////////////////////////////////////////////////
SGSubsystemMgr::SGSubsystemMgr ()
{
+ for (int i = 0; i < MAX_GROUPS; i++) {
+ _groups[i] = new SGSubsystemGroup;
+ }
}
SGSubsystemMgr::~SGSubsystemMgr ()
{
+ // ensure get_subsystem returns NULL from now onwards,
+ // before the SGSubsystemGroup destructors are run
+ _subsystem_map.clear();
+
+ for (int i = 0; i < MAX_GROUPS; i++) {
+ delete _groups[i];
+ }
}
void
SGSubsystemMgr::init ()
{
for (int i = 0; i < MAX_GROUPS; i++)
- _groups[i].init();
+ _groups[i]->init();
}
void
SGSubsystemMgr::postinit ()
{
for (int i = 0; i < MAX_GROUPS; i++)
- _groups[i].postinit();
+ _groups[i]->postinit();
}
void
SGSubsystemMgr::reinit ()
{
for (int i = 0; i < MAX_GROUPS; i++)
- _groups[i].reinit();
+ _groups[i]->reinit();
}
void
-SGSubsystemMgr::bind ()
+SGSubsystemMgr::shutdown ()
{
- for (int i = 0; i < MAX_GROUPS; i++)
- _groups[i].bind();
+ // reverse order to prevent order dependency problems
+ for (int i = MAX_GROUPS-1; i >= 0; i--)
+ _groups[i]->shutdown();
}
+
void
-SGSubsystemMgr::unbind ()
+SGSubsystemMgr::bind ()
{
for (int i = 0; i < MAX_GROUPS; i++)
- _groups[i].unbind();
+ _groups[i]->bind();
}
void
-SGSubsystemMgr::update (double delta_time_sec)
+SGSubsystemMgr::unbind ()
{
- for (int i = 0; i < MAX_GROUPS; i++) {
- _groups[i].update(delta_time_sec);
- }
+ // reverse order to prevent order dependency problems
+ for (int i = MAX_GROUPS-1; i >= 0; i--)
+ _groups[i]->unbind();
}
-void
-SGSubsystemMgr::collectDebugTiming(bool collect)
+void
+SGSubsystemMgr::update (double delta_time_sec)
{
for (int i = 0; i < MAX_GROUPS; i++) {
- _groups[i].collectDebugTiming(collect);
+ _groups[i]->update(delta_time_sec);
}
}
SGSubsystemMgr::suspend ()
{
for (int i = 0; i < MAX_GROUPS; i++)
- _groups[i].suspend();
+ _groups[i]->suspend();
}
void
SGSubsystemMgr::resume ()
{
for (int i = 0; i < MAX_GROUPS; i++)
- _groups[i].resume();
+ _groups[i]->resume();
}
bool
_subsystem_map[name] = subsystem;
}
+SGSubsystem*
+SGSubsystemMgr::remove(const char* name)
+{
+ SubsystemDict::iterator s =_subsystem_map.find(name);
+ if (s == _subsystem_map.end()) {
+ return NULL;
+ }
+
+ SGSubsystem* sub = s->second;
+ _subsystem_map.erase(s);
+
+// tedious part - we don't know which group the subsystem belongs too
+ for (int i = 0; i < MAX_GROUPS; i++) {
+ if (_groups[i]->get_subsystem(name) == sub) {
+ _groups[i]->remove_subsystem(name);
+ break;
+ }
+ } // of groups iteration
+
+ return sub;
+}
+
+
SGSubsystemGroup *
SGSubsystemMgr::get_group (GroupType group)
{
- return &(_groups[group]);
+ return _groups[group];
}
SGSubsystem *
-SGSubsystemMgr::get_subsystem (const string &name)
+SGSubsystemMgr::get_subsystem (const string &name) const
{
- map<string,SGSubsystem *>::iterator s =_subsystem_map.find(name);
+ SubsystemDict::const_iterator s =_subsystem_map.find(name);
if (s == _subsystem_map.end())
return 0;
return s->second;
}
-// end of fgfs.cxx
+/** Trigger the timing callback to report data for all subsystems. */
+void
+SGSubsystemMgr::reportTiming()
+{
+ for (int i = 0; i < MAX_GROUPS; i++) {
+ _groups[i]->reportTiming();
+ } // of groups iteration
+}
+
+// end of subsystem_mgr.cxx
projects / simgear.git / blobdiff