#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::shutdown ()
+{
+}
+
void
SGSubsystem::bind ()
{
void
SGSubsystem::printTimingInformation ()
{
- SGTimeStamp startTime, endTime;
- long duration;
+ SGTimeStamp startTime;
for ( eventTimeVecIterator i = timingInfo.begin();
i != timingInfo.end();
i++) {
if (i == timingInfo.begin()) {
startTime = i->getTime();
} else {
- endTime = i->getTime();
- duration = (endTime - startTime);
+ SGTimeStamp endTime = i->getTime();
+ SG_LOG(SG_GENERAL, SG_ALERT, "- Getting to timestamp : "
+ << i->getName() << " takes " << endTime - startTime
+ << " sec.");
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 ()
+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->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)
+{
+ 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++)
{
- SGTimeStamp start, now;
- start.stamp();
- _members[i]->update(delta_time_sec); // indirect call
- now.stamp();
- long b = ( now - start );
- if ( b > 10000 ) {
- SG_LOG(SG_GENERAL, SG_ALERT, "Subsystem Timing Alert : " << b << " " << _members[i]->name);
- //int a = 1;
- _members[i]->printTimingInformation();
- }
+ _members[i]->collectDebugTiming(collect);
}
}
}
}
+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 ()
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()
+SGSubsystemGroup::Member::printTimingInformation(double time)
{
- subsystem->printTimingInformation();
+ 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
////////////////////////////////////////////////////////////////////////
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::shutdown ()
+{
+ // reverse order to prevent order dependency problems
+ for (int i = MAX_GROUPS-1; i >= 0; i--)
+ _groups[i]->shutdown();
+}
+
+
void
SGSubsystemMgr::bind ()
{
for (int i = 0; i < MAX_GROUPS; i++)
- _groups[i].bind();
+ _groups[i]->bind();
}
void
SGSubsystemMgr::unbind ()
{
- for (int i = 0; i < MAX_GROUPS; i++)
- _groups[i].unbind();
+ // reverse order to prevent order dependency problems
+ for (int i = MAX_GROUPS-1; i >= 0; i--)
+ _groups[i]->unbind();
}
void
SGSubsystemMgr::update (double delta_time_sec)
{
for (int i = 0; i < MAX_GROUPS; i++) {
- _groups[i].update(delta_time_sec);
+ _groups[i]->update(delta_time_sec);
+ }
+}
+
+void
+SGSubsystemMgr::collectDebugTiming(bool collect)
+{
+ for (int i = 0; i < MAX_GROUPS; i++) {
+ _groups[i]->collectDebugTiming(collect);
}
}
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;
projects / simgear.git / blobdiff