#include <simgear/debug/logstream.hxx>
+#include <simgear/timing/timestamp.hxx>
#include "exception.hxx"
#include "subsystem_mgr.hxx"
+#include <simgear/math/SGMath.hxx>
-\f
+
+const int SG_MAX_SUBSYSTEM_EXCEPTIONS = 4;\f
////////////////////////////////////////////////////////////////////////
// Implementation of SGSubsystem
////////////////////////////////////////////////////////////////////////
{
}
+void
+SGSubsystem::postinit ()
+{
+}
+
void
SGSubsystem::reinit ()
{
}
+void
+SGSubsystem::printTimingInformation ()
+{
+ SGTimeStamp startTime;
+ for ( eventTimeVecIterator i = timingInfo.begin();
+ i != timingInfo.end();
+ i++) {
+ if (i == timingInfo.begin()) {
+ startTime = i->getTime();
+ } else {
+ SGTimeStamp endTime = i->getTime();
+ SG_LOG(SG_GENERAL, SG_ALERT, "- Getting to timestamp : "
+ << i->getName() << " takes " << endTime - startTime
+ << " sec.");
+ startTime = endTime;
+ }
+ }
+}
+
+
+
+void SGSubsystem::stamp(const string& name)
+{
+ timingInfo.push_back(TimingInfo(name, SGTimeStamp::now()));
+}
+
\f
////////////////////////////////////////////////////////////////////////
// Implementation of SGSubsystemGroup.
////////////////////////////////////////////////////////////////////////
-SGSubsystemGroup::SGSubsystemGroup ()
+SGSubsystemGroup::SGSubsystemGroup () :
+ _fixedUpdateTime(-1.0),
+ _updateTimeRemainder(0.0)
{
}
SGSubsystemGroup::~SGSubsystemGroup ()
{
- for (unsigned int i = 0; i < _members.size(); i++)
- delete _members[i];
+ // reverse order to prevent order dependency problems
+ for (unsigned int i = _members.size(); i > 0; i--)
+ {
+ _members[i-1]->printTimingStatistics();
+ delete _members[i-1];
+ }
}
void
_members[i]->subsystem->init();
}
+void
+SGSubsystemGroup::postinit ()
+{
+ for (unsigned int i = 0; i < _members.size(); i++)
+ _members[i]->subsystem->postinit();
+}
+
void
SGSubsystemGroup::reinit ()
{
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)
+{
+ 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;
+ }
+
+ while (loopCount-- > 0) {
+ for (unsigned int i = 0; i < _members.size(); i++)
+ {
+ SGTimeStamp timeStamp = SGTimeStamp::now();
+ _members[i]->update(delta_time_sec); // indirect call
+ timeStamp = timeStamp - SGTimeStamp::now();
+ double b = timeStamp.toUSecs();
+ _members[i]->updateExecutionTime(b);
+ double threshold = _members[i]->getTimeWarningThreshold();
+ if (( b > threshold ) && (b > 10000)) {
+ _members[i]->printTimingInformation(b);
+ }
+ }
+ } // of multiple update loop
+}
+
+void
+SGSubsystemGroup::collectDebugTiming(bool collect)
{
for (unsigned int i = 0; i < _members.size(); i++)
- _members[i]->update(delta_time_sec); // indirect call
+ {
+ _members[i]->collectDebugTiming(collect);
+ }
}
void
}
}
+void
+SGSubsystemGroup::set_fixed_update_time(double dt)
+{
+ _fixedUpdateTime = dt;
+}
+
+void
+SGSubsystemGroup::Member::printTimingStatistics ()
+{
+ 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);
+ }
+}
+
+
bool
SGSubsystemGroup::has_subsystem (const string &name) const
{
: name(""),
subsystem(0),
min_step_sec(0),
- elapsed_sec(0)
+ elapsed_sec(0),
+ collectTimeStats(false),
+ exceptionCount(0)
{
}
+// This shouldn't be called due to subsystem pointer ownership issues.
SGSubsystemGroup::Member::Member (const Member &)
{
- Member();
}
SGSubsystemGroup::Member::~Member ()
{
- // FIXME: causes a crash
-// delete subsystem;
+ delete subsystem;
}
void
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;
+ }
+
+ 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();
+ }
+ }
+}
+
+
+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;
+ }
+}
+
+
+
\f
////////////////////////////////////////////////////////////////////////
_groups[i].init();
}
+void
+SGSubsystemMgr::postinit ()
+{
+ for (int i = 0; i < MAX_GROUPS; i++)
+ _groups[i].postinit();
+}
+
void
SGSubsystemMgr::reinit ()
{
void
SGSubsystemMgr::unbind ()
{
- for (int i = 0; i < MAX_GROUPS; i++)
+ // reverse order to prevent order dependency problems
+ for (int i = MAX_GROUPS-1; i >= 0; i--)
_groups[i].unbind();
}
}
}
+void
+SGSubsystemMgr::collectDebugTiming(bool collect)
+{
+ for (int i = 0; i < MAX_GROUPS; i++) {
+ _groups[i].collectDebugTiming(collect);
+ }
+}
+
void
SGSubsystemMgr::suspend ()
{
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