2022-02-27 Fred Gleason <fredg@paravelsystems.com>

* Added an 'RDTimeProbe' class.

Signed-off-by: Fred Gleason <fredg@paravelsystems.com>

ChangeLog

@@ -22893,3 +22893,5 @@
 	* Fixed a bug in rddbmgr(8) that could cause the 346=>347 schema
 	conversion to hang indefinitely with databases containing large
 	cart libraries.
+2022-02-27 Fred Gleason <fredg@paravelsystems.com>
+	* Added an 'RDTimeProbe' class.

lib/Makefile.am

@@ -263,6 +263,7 @@ dist_librd_la_SOURCES = dbversion.h\
                         rdtextvalidator.cpp rdtextvalidator.h\
                         rdtimeedit.cpp rdtimeedit.h\
                         rdtimeengine.cpp rdtimeengine.h\
+                        rdtimeprobe.cpp rdtimeprobe.h\
                         rdtrackereditdialog.cpp rdtrackereditdialog.h\
                         rdtrackermodel.cpp rdtrackermodel.h\
                         rdtrackertableview.cpp rdtrackertableview.h\

lib/librd.pro

@@ -203,6 +203,7 @@ SOURCES += rdtextfile.cpp
 SOURCES += rdtextvalidator.cpp
 SOURCES += rdtimeedit.cpp
 SOURCES += rdtimeengine.cpp
+SOURCES += rdtimeprobe.cpp
 SOURCES += rdtrackereditdialog.cpp
 SOURCES += rdtrackermodel.cpp
 SOURCES += rdtrackertableview.cpp
@@ -393,6 +394,7 @@ HEADERS += rdtextvalidator.h
 HEADERS += rdtimeedit.h
 HEADERS += rdtimeedit.h
 HEADERS += rdtimeengine.h
+HEADERS += rdtimeprobe.h
 HEADERS += rdtrackereditdialog.h
 HEADERS += rdtrackermodel.h
 HEADERS += rdtrackertableview.h

lib/rdtimeprobe.cpp

@@ -0,0 +1,104 @@
+//   rdtimeprobe.cpp
+//
+//   Report elapsed times for profiling and optimization
+//
+//   (C) Copyright 2022 Fred Gleason <fredg@paravelsystems.com>
+//
+//   This program is free software; you can redistribute it and/or modify
+//   it under the terms of the GNU Library General Public License 
+//   version 2 as published by the Free Software Foundation.
+//
+//   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., 675 Mass Ave, Cambridge, MA 02139, USA.
+//
+
+#include "rdtimeprobe.h"
+
+RDTimeProbeStamp::RDTimeProbeStamp(struct timespec *tp)
+{
+  d_timespec=*tp;
+}
+
+
+RDTimeProbeStamp::~RDTimeProbeStamp()
+{
+}
+
+
+QString RDTimeProbeStamp::toString() const
+{
+  QDateTime dt=QDateTime::fromMSecsSinceEpoch(1000*(qint64)d_timespec.tv_sec);
+  QString microsec=QString::asprintf(".%06ld",d_timespec.tv_nsec);
+
+  return dt.time().toString("hh:mm:ss")+microsec.left(4);
+}
+
+
+double RDTimeProbeStamp::operator-(const RDTimeProbeStamp &other)
+{
+  double lhs=(double)d_timespec.tv_sec+(double)d_timespec.tv_nsec/1000000000.0;
+  double rhs=(double)other.d_timespec.tv_sec+
+    (double)other.d_timespec.tv_nsec/1000000000.0;
+
+  return lhs-rhs;
+}
+
+
+RDTimeProbeStamp *RDTimeProbeStamp::currentStamp()
+{
+  struct timespec now;
+
+  memset(&now,0,sizeof(now));
+  clock_gettime(CLOCK_REALTIME,&now);
+
+  return new RDTimeProbeStamp(&now);
+}
+
+
+
+
+RDTimeProbe::RDTimeProbe(FILE *out)
+{
+  d_current_timestamp=NULL;
+  d_output_stream=out;
+
+  fprintf(d_output_stream,
+	  "================================================================\n");
+  fprintf(d_output_stream,"%p: RDTimeProbe created\n",this);
+}
+
+
+RDTimeProbe::~RDTimeProbe()
+{
+  fprintf(d_output_stream,"%p: RDTimeProbe destroyed\n",this);
+  fprintf(d_output_stream,
+	  "================================================================\n");
+  if(d_current_timestamp!=NULL) {
+    delete d_current_timestamp;
+  }
+}
+
+
+void RDTimeProbe::printWaypoint(const QString &label)
+{
+  RDTimeProbeStamp *now=RDTimeProbeStamp::currentStamp();
+  double diff=0.0;
+
+  if(d_current_timestamp!=NULL) {
+    diff=*now-*d_current_timestamp;
+  }
+  QString diff_str=QString::asprintf("%18.6lf",diff).trimmed();
+  fprintf(d_output_stream,"%p : %s [%s] : %s\n",
+	  this,
+	  now->toString().toUtf8().constData(),
+	  diff_str.toUtf8().constData(),
+	  label.toUtf8().constData());
+  delete d_current_timestamp;
+  d_current_timestamp=now;
+}

lib/rdtimeprobe.h

@@ -0,0 +1,59 @@
+//   rdtimeprobe.h
+//
+//   Report elapsed times for profiling and optimization
+//
+//   (C) Copyright 2022 Fred Gleason <fredg@paravelsystems.com>
+//
+//   This program is free software; you can redistribute it and/or modify
+//   it under the terms of the GNU Library General Public License 
+//   version 2 as published by the Free Software Foundation.
+//
+//   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., 675 Mass Ave, Cambridge, MA 02139, USA.
+//
+
+#ifndef RDTIMEPROBE_H
+#define RDTIMEPROBE_H
+
+#include <stdio.h>
+#include <time.h>
+
+#include <QDateTime>
+#include <QString>
+
+class RDTimeProbeStamp
+{
+ public:
+  RDTimeProbeStamp(struct timespec *tp=NULL);
+  ~RDTimeProbeStamp();
+  QString toString() const;
+  double operator-(const RDTimeProbeStamp &other);
+  static RDTimeProbeStamp *currentStamp();
+
+ private:
+  struct timespec d_timespec;
+};
+
+
+
+
+class RDTimeProbe
+{
+ public:
+  RDTimeProbe(FILE *out=stderr);
+  ~RDTimeProbe();
+  void printWaypoint(const QString &label);
+
+ private:
+  RDTimeProbeStamp *d_current_timestamp;
+  FILE *d_output_stream;
+};
+
+
+#endif  // RDTIMEPROBE_H