diff --git a/doc/src/Section_commands.txt b/doc/src/Section_commands.txt
index f8e9f49073..23de1b1594 100644
--- a/doc/src/Section_commands.txt
+++ b/doc/src/Section_commands.txt
@@ -924,7 +924,7 @@ KOKKOS, o = USER-OMP, t = OPT.
 "tip4p/long (o)"_pair_coul.html,
 "tri/lj"_pair_tri_lj.html,
 "vashishta (o)"_pair_vashishta.html,
-"vashishta/table (o)"_pair_vashishta_table.html,
+"vashishta/table (o)"_pair_vashishta.html,
 "yukawa (go)"_pair_yukawa.html,
 "yukawa/colloid (go)"_pair_yukawa_colloid.html,
 "zbl (go)"_pair_zbl.html :tb(c=4,ea=c)
diff --git a/doc/src/fix_dpd_energy.txt b/doc/src/fix_dpd_energy.txt
index 9c4a55e964..db1fb0c703 100644
--- a/doc/src/fix_dpd_energy.txt
+++ b/doc/src/fix_dpd_energy.txt
@@ -27,9 +27,9 @@ the group at each timestep.  It must be used in conjunction with a
 deterministic integrator (e.g. "fix nve"_fix_nve.html) that updates
 the particle positions and velocities.
 
-For fix {dpd/energy}, the particle internal temperature is related to 
-the particle internal energy through a mesoparticle equation of state.  
-An additional fix must be specified that defines the equation of state 
+For fix {dpd/energy}, the particle internal temperature is related to
+the particle internal energy through a mesoparticle equation of state.
+An additional fix must be specified that defines the equation of state
 for each particle, e.g. "fix eos/cv"_fix_eos_cv.html.
 
 This fix must be used with the "pair_style
@@ -37,7 +37,7 @@ dpd/fdt/energy"_pair_style.html command.
 
 Note that numerous variants of DPD can be specified by choosing an
 appropriate combination of the integrator and "pair_style
-dpd/fdt/energy"_pair_style.html command.  DPD under isoenergetic conditions 
+dpd/fdt/energy"_pair_style.html command.  DPD under isoenergetic conditions
 can be specified by using fix {dpd/energy}, fix {nve} and pair_style
 {dpd/fdt/energy}.  DPD under isoenthalpic conditions can
 be specified by using fix {dpd/energy}, fix {nph} and pair_style
@@ -46,7 +46,7 @@ examples/USER/dpd directory.
 
 :line
 
-[Restrictions:] 
+[Restrictions:]
 
 This command is part of the USER-DPD package.  It is only enabled if
 LAMMPS was built with that package.  See the "Making
@@ -55,11 +55,11 @@ LAMMPS"_Section_start.html#start_3 section for more info.
 This fix must be used with an additional fix that specifies time
 integration, e.g. "fix nve"_fix_nve.html.
 
-The fix {dpd/energy} requires the {dpd} "atom_style"_atom_style.html 
-to be used in order to properly account for the particle internal 
+The fix {dpd/energy} requires the {dpd} "atom_style"_atom_style.html
+to be used in order to properly account for the particle internal
 energies and temperature.
 
-The fix {dpd/energy} must be used with an additional fix that specifies the 
+The fix {dpd/energy} must be used with an additional fix that specifies the
 mesoparticle equation of state for each particle.
 
 [Related commands:]
diff --git a/doc/src/fix_wall_gran.txt b/doc/src/fix_wall_gran.txt
index f30872186d..40cd5c8c74 100644
--- a/doc/src/fix_wall_gran.txt
+++ b/doc/src/fix_wall_gran.txt
@@ -163,8 +163,8 @@ Any dimension (xyz) that has a granular wall must be non-periodic.
 
 [Related commands:]
 
-"fix move"_fix_move.html, 
-"fix wall/gran/region"_fix_wall_gran_region.html, 
+"fix move"_fix_move.html,
+"fix wall/gran/region"_fix_wall_gran_region.html,
 "pair_style granular"_pair_gran.html
 
 [Default:] none
diff --git a/doc/src/fix_wall_gran_region.txt b/doc/src/fix_wall_gran_region.txt
index 63092486eb..478f8b9b23 100644
--- a/doc/src/fix_wall_gran_region.txt
+++ b/doc/src/fix_wall_gran_region.txt
@@ -84,7 +84,7 @@ is up to you to ensure that the region location with respect to
 periodic or non-periodic boundaries is specified appropriately via the
 "region"_region.html and "boundary"_boundary.html commands when using
 a region as a wall that bounds particle motion.
- 
+
 NOTE: For primitive regions with sharp corners and/or edges (e.g. a
 block or cylinder), wall/particle forces are computed accurately for
 both interior and exterior regions.  For {union} and {intersect}
@@ -190,7 +190,7 @@ LAMMPS"_Section_start.html#start_3 section for more info.
 [Related commands:]
 
 "fix_move"_fix_move.html,
-"fix wall/gran"_fix_wall_gran.html, 
+"fix wall/gran"_fix_wall_gran.html,
 "fix wall/region"_fix_wall_region.html,
 "pair_style granular"_pair_gran.html,
 "region"_region.html
diff --git a/doc/src/fixes.txt b/doc/src/fixes.txt
index c8e989cc62..05a320085b 100644
--- a/doc/src/fixes.txt
+++ b/doc/src/fixes.txt
@@ -32,6 +32,7 @@ Fixes :h1
    fix_drag
    fix_drude
    fix_drude_transform
+   fix_dpd_energy
    fix_dt_reset
    fix_efield
    fix_ehex
@@ -148,6 +149,7 @@ Fixes :h1
    fix_viscous
    fix_wall
    fix_wall_gran
+   fix_wall_gran_region
    fix_wall_piston
    fix_wall_reflect
    fix_wall_region
diff --git a/doc/src/pair_dpd_fdt.txt b/doc/src/pair_dpd_fdt.txt
index 86cd27b131..ffd138ddbd 100644
--- a/doc/src/pair_dpd_fdt.txt
+++ b/doc/src/pair_dpd_fdt.txt
@@ -33,12 +33,12 @@ pair_coeff * * 3.0 1.0 0.1 2.5 :pre
 
 [Description:]
 
-Styles {dpd/fdt} and {dpd/fdt/energy} compute the force for dissipative 
-particle dynamics (DPD) simulations.  The {dpd/fdt} style is used to 
-perform DPD simulations under isothermal and isobaric conditions, 
-while the {dpd/fdt/energy} style is used to perform DPD simulations 
-under isoenergetic and isoenthalpic conditions (see "(Lisal)"_#Lisal). 
-For DPD simulations in general, the force on atom I due to atom J is 
+Styles {dpd/fdt} and {dpd/fdt/energy} compute the force for dissipative
+particle dynamics (DPD) simulations.  The {dpd/fdt} style is used to
+perform DPD simulations under isothermal and isobaric conditions,
+while the {dpd/fdt/energy} style is used to perform DPD simulations
+under isoenergetic and isoenthalpic conditions (see "(Lisal)"_#Lisal).
+For DPD simulations in general, the force on atom I due to atom J is
 given as a sum of 3 terms
 
 :c,image(Eqs/pair_dpd.jpg)
@@ -48,20 +48,20 @@ a random force.  Rij is a unit vector in the direction Ri - Rj, Vij is
 the vector difference in velocities of the two atoms = Vi - Vj, alpha
 is a Gaussian random number with zero mean and unit variance, dt is
 the timestep size, and w(r) is a weighting factor that varies between
-0 and 1.  Rc is the cutoff.  The weighting factor, omega_ij, varies 
+0 and 1.  Rc is the cutoff.  The weighting factor, omega_ij, varies
 between 0 and 1, and is chosen to have the following functional form:
 
 :c,image(Eqs/pair_dpd_omega.jpg)
 
-Note that alternative definitions of the weighting function exist, but 
-would have to be implemented as a separate pair style command. 
+Note that alternative definitions of the weighting function exist, but
+would have to be implemented as a separate pair style command.
 
 For style {dpd/fdt}, the fluctuation-dissipation theorem defines gamma
 to be set equal to sigma*sigma/(2 T), where T is the set point
 temperature specified as a pair style parameter in the above examples.
-The following coefficients must be defined for each pair of atoms types 
-via the "pair_coeff"_pair_coeff.html command as in the examples above, 
-or in the data file or restart files read by the 
+The following coefficients must be defined for each pair of atoms types
+via the "pair_coeff"_pair_coeff.html command as in the examples above,
+or in the data file or restart files read by the
 "read_data"_read_data.html or "read_restart"_read_restart.html commands:
 
 A (force units)
@@ -71,28 +71,28 @@ cutoff (distance units) :ul
 The last coefficient is optional.  If not specified, the global DPD
 cutoff is used.
 
-Style {dpd/fdt/energy} is used to perform DPD simulations 
-under isoenergetic and isoenthalpic conditions.  The fluctuation-dissipation 
+Style {dpd/fdt/energy} is used to perform DPD simulations
+under isoenergetic and isoenthalpic conditions.  The fluctuation-dissipation
 theorem defines gamma to be set equal to sigma*sigma/(2 dpdTheta), where
-dpdTheta is the average internal temperature for the pair. The particle 
-internal temperature is related to the particle internal energy through 
-a mesoparticle equation of state (see "fix eos"_fix.html). The 
-differential internal conductive and mechanical energies are computed 
+dpdTheta is the average internal temperature for the pair. The particle
+internal temperature is related to the particle internal energy through
+a mesoparticle equation of state (see "fix eos"_fix.html). The
+differential internal conductive and mechanical energies are computed
 within style {dpd/fdt/energy} as:
 
 :c,image(Eqs/pair_dpd_energy.jpg)
 
-where 
+where
 
 :c,image(Eqs/pair_dpd_energy_terms.jpg)
 
-Zeta_ij^q is a second Gaussian random number with zero mean and unit 
-variance that is used to compute the internal conductive energy. The 
+Zeta_ij^q is a second Gaussian random number with zero mean and unit
+variance that is used to compute the internal conductive energy. The
 fluctuation-dissipation theorem defines alpha*alpha to be set
 equal to 2*kB*kappa, where kappa is the mesoparticle thermal
-conductivity parameter.   The following coefficients must be defined for 
-each pair of atoms types via the "pair_coeff"_pair_coeff.html 
-command as in the examples above, or in the data file or restart files 
+conductivity parameter.   The following coefficients must be defined for
+each pair of atoms types via the "pair_coeff"_pair_coeff.html
+command as in the examples above, or in the data file or restart files
 read by the "read_data"_read_data.html or "read_restart"_read_restart.html
 commands:
 
@@ -109,18 +109,18 @@ The pairwise energy associated with styles {dpd/fdt} and
 shifted to be zero at the cutoff distance Rc.  The pairwise virial is
 calculated using only the conservative term.
 
-The forces computed through the {dpd/fdt} and {dpd/fdt/energy} styles 
+The forces computed through the {dpd/fdt} and {dpd/fdt/energy} styles
 can be integrated with the velocity-Verlet integration scheme or the
-Shardlow splitting integration scheme described by "(Lisal)"_#Lisal.  
-In the cases when these pair styles are combined with the 
-"fix shardlow"_fix_shardlow.html, these pair styles differ from the 
+Shardlow splitting integration scheme described by "(Lisal)"_#Lisal.
+In the cases when these pair styles are combined with the
+"fix shardlow"_fix_shardlow.html, these pair styles differ from the
 other dpd styles in that the dissipative and random forces are split
-from the force calculation and are not computed within the pair style. 
-Thus, only the conservative force is computed by the pair style, 
-while the stochastic integration of the dissipative and random forces 
-are handled through the Shardlow splitting algorithm approach.  The 
-Shardlow splitting algorithm is advantageous, especially when 
-performing DPD under isoenergetic conditions, as it allows 
+from the force calculation and are not computed within the pair style.
+Thus, only the conservative force is computed by the pair style,
+while the stochastic integration of the dissipative and random forces
+are handled through the Shardlow splitting algorithm approach.  The
+Shardlow splitting algorithm is advantageous, especially when
+performing DPD under isoenergetic conditions, as it allows
 significantly larger timesteps to be taken.
 
 :line
@@ -132,7 +132,7 @@ enabled if LAMMPS was built with that package.  See the "Making
 LAMMPS"_Section_start.html#start_3 section for more info.
 
 Pair styles {dpd/fdt} and {dpd/fdt/energy} require use of the
-"communicate vel yes"_communicate.html option so that velocites are
+"comm_modify vel yes"_comm_modify.html option so that velocites are
 stored by ghost atoms.
 
 Pair style {dpd/fdt/energy} requires "atom_style dpd"_atom_style.html
diff --git a/src/.gitignore b/src/.gitignore
index 857ac769b4..164ad0f119 100644
--- a/src/.gitignore
+++ b/src/.gitignore
@@ -489,6 +489,8 @@
 /fix_wall_colloid.h
 /fix_wall_gran.cpp
 /fix_wall_gran.h
+/fix_wall_gran_region.cpp
+/fix_wall_gran_region.h
 /fix_wall_piston.cpp
 /fix_wall_piston.h
 /fix_wall_srd.cpp
diff --git a/src/GRANULAR/fix_wall_gran_region.cpp b/src/GRANULAR/fix_wall_gran_region.cpp
index 3ed7cf3d90..96b1f5071f 100644
--- a/src/GRANULAR/fix_wall_gran_region.cpp
+++ b/src/GRANULAR/fix_wall_gran_region.cpp
@@ -15,9 +15,9 @@
    Contributing authors: Dan Bolintineanu (SNL)
 ------------------------------------------------------------------------- */
 
-#include "math.h"
-#include "stdlib.h"
-#include "string.h"
+#include <math.h>
+#include <stdlib.h>
+#include <string.h>
 #include "fix_wall_gran_region.h"
 #include "region.h"
 #include "atom.h"
diff --git a/src/USER-DPD/fix_dpd_energy.cpp b/src/USER-DPD/fix_dpd_energy.cpp
index e6b7a9e83e..05907a5fcf 100644
--- a/src/USER-DPD/fix_dpd_energy.cpp
+++ b/src/USER-DPD/fix_dpd_energy.cpp
@@ -11,8 +11,8 @@
    See the README file in the top-level LAMMPS directory.
 ------------------------------------------------------------------------- */
 
-#include "stdio.h"
-#include "string.h"
+#include <stdio.h>
+#include <string.h>
 #include "fix_dpd_energy.h"
 #include "atom.h"
 #include "force.h"
diff --git a/src/USER-DPD/fix_eos_table_rx.cpp b/src/USER-DPD/fix_eos_table_rx.cpp
index 4cd6ffc755..85c3a6dd2a 100644
--- a/src/USER-DPD/fix_eos_table_rx.cpp
+++ b/src/USER-DPD/fix_eos_table_rx.cpp
@@ -687,7 +687,7 @@ void FixEOStableRX::temperature_lookup(int id, double ui, double &thetai)
   double maxit = 100;
   double temp;
   double delta = 0.001;
-  
+
   // Store the current thetai in t1
   t1 = MAX(thetai,tb->lo);
   t1 = MIN(t1,tb->hi);
@@ -731,7 +731,7 @@ void FixEOStableRX::temperature_lookup(int id, double ui, double &thetai)
   if(it==maxit){
     char str[256];
     sprintf(str,"Maxit exceeded in secant solver:  id=%d ui=%lf thetai=%lf t1=%lf t2=%lf f1=%lf f2=%lf\n",id,ui,thetai,t1,t2,f1,f2);
-    if(isnan(f1) || isnan(f2) || isnan(ui) || isnan(thetai) || isnan(t1) || isnan(t2)) 
+    if(isnan(f1) || isnan(f2) || isnan(ui) || isnan(thetai) || isnan(t1) || isnan(t2))
       error->one(FLERR,"NaN detected in secant solver.");
     error->one(FLERR,str);
   }
diff --git a/src/USER-DPD/fix_rx.cpp b/src/USER-DPD/fix_rx.cpp
index 96f7f44422..67b134e53e 100644
--- a/src/USER-DPD/fix_rx.cpp
+++ b/src/USER-DPD/fix_rx.cpp
@@ -231,7 +231,7 @@ FixRX::~FixRX()
      memory->destroy( sparseKinetics_inu );
      memory->destroy( sparseKinetics_isIntegralReaction );
   }
-}  
+}
 
 /* ---------------------------------------------------------------------- */
 
@@ -1720,7 +1720,7 @@ void FixRX::computeLocalTemperature()
 
         // Lucy's Weight Function
         if(wtFlag==LUCY){
-          wij = (1.0+3.0*ratio) * (1.0-ratio)*(1.0-ratio)*(1.0-ratio); 
+          wij = (1.0+3.0*ratio) * (1.0-ratio)*(1.0-ratio)*(1.0-ratio);
           dpdThetaLocal[i] += wij/dpdTheta[j];
           if (newton_pair || j < nlocal)
             dpdThetaLocal[j] += wij/dpdTheta[i];
diff --git a/src/USER-DPD/pair_exp6_rx.cpp b/src/USER-DPD/pair_exp6_rx.cpp
index 060ef2d7c1..ad2dbf1465 100644
--- a/src/USER-DPD/pair_exp6_rx.cpp
+++ b/src/USER-DPD/pair_exp6_rx.cpp
@@ -451,7 +451,7 @@ void PairExp6rx::compute(int eflag, int vflag)
           //
           // Apply Mixing Rule to get the overall force for the CG pair
           //
-          if (isite1 == isite2) fpair = sqrt(fractionOld1_i*fractionOld2_j)*fpairOldEXP6_12; 
+          if (isite1 == isite2) fpair = sqrt(fractionOld1_i*fractionOld2_j)*fpairOldEXP6_12;
           else fpair = sqrt(fractionOld1_i*fractionOld2_j)*fpairOldEXP6_12 + sqrt(fractionOld2_i*fractionOld1_j)*fpairOldEXP6_21;
 
           f[i][0] += delx*fpair;
@@ -588,7 +588,7 @@ void PairExp6rx::coeff(int narg, char **arg)
 
   {
     // Set isite1 and isite2 parameters based on site1 and site2 strings.
-    
+
     if (strcmp(site1,"1fluid") == 0)
       isite1 = oneFluidApproxParameter;
     else
@@ -602,7 +602,7 @@ void PairExp6rx::coeff(int narg, char **arg)
         else
           isite1 = isp;
       }
-    
+
     if (strcmp(site2,"1fluid") == 0)
       isite2 = oneFluidApproxParameter;
     else
@@ -616,7 +616,7 @@ void PairExp6rx::coeff(int narg, char **arg)
         else
           isite2 = isp;
       }
-    
+
     // Set the interaction potential type to the enumerated type.
     for (int iparam = 0; iparam < nparams; ++iparam)
       {
diff --git a/src/USER-DPD/pair_multi_lucy_rx.cpp b/src/USER-DPD/pair_multi_lucy_rx.cpp
index de86733725..cf10a70756 100644
--- a/src/USER-DPD/pair_multi_lucy_rx.cpp
+++ b/src/USER-DPD/pair_multi_lucy_rx.cpp
@@ -234,7 +234,7 @@ void PairMultiLucyRX::compute(int eflag, int vflag)
 
         } else error->one(FLERR,"Only LOOKUP and LINEAR table styles have been implemented for pair multi/lucy/rx");
 
-        if (isite1 == isite2) fpair = sqrt(fractionOld1_i*fractionOld2_j)*fpair; 
+        if (isite1 == isite2) fpair = sqrt(fractionOld1_i*fractionOld2_j)*fpair;
         else fpair = (sqrt(fractionOld1_i*fractionOld2_j) + sqrt(fractionOld2_i*fractionOld1_j))*fpair;
 
         fx_i += delx*fpair;
@@ -935,7 +935,7 @@ void PairMultiLucyRX::getParams(int id, double &fractionOld1, double &fractionOl
   nTotal = 0.0;
   nTotalOld = 0.0;
   for (int ispecies = 0; ispecies < nspecies; ispecies++){
-    nTotal += atom->dvector[ispecies][id]; 
+    nTotal += atom->dvector[ispecies][id];
     nTotalOld += atom->dvector[ispecies+nspecies][id];
   }
 
diff --git a/src/USER-DPD/pair_table_rx.cpp b/src/USER-DPD/pair_table_rx.cpp
index 44a9d76022..74b9222a0b 100644
--- a/src/USER-DPD/pair_table_rx.cpp
+++ b/src/USER-DPD/pair_table_rx.cpp
@@ -186,7 +186,7 @@ void PairTableRX::compute(int eflag, int vflag)
           value = tb->f[itable] + fraction*tb->df[itable];
           fpair = factor_lj * value;
         }
-        if (isite1 == isite2) fpair = sqrt(fractionOld1_i*fractionOld2_j)*fpair; 
+        if (isite1 == isite2) fpair = sqrt(fractionOld1_i*fractionOld2_j)*fpair;
         else fpair = (sqrt(fractionOld1_i*fractionOld2_j) + sqrt(fractionOld2_i*fractionOld1_j))*fpair;
 
         fx_i += delx*fpair;
@@ -1102,7 +1102,7 @@ double PairTableRX::single(int i, int j, int itype, int jtype, double rsq,
     fforce = factor_lj * value;
   }
 
-  if (isite1 == isite2) fforce = sqrt(fraction1_i*fraction2_j)*fforce; 
+  if (isite1 == isite2) fforce = sqrt(fraction1_i*fraction2_j)*fforce;
   else fforce = (sqrt(fraction1_i*fraction2_j) + sqrt(fraction2_i*fraction1_j))*fforce;
 
   if (tabstyle == LOOKUP)
@@ -1146,17 +1146,17 @@ void PairTableRX::getParams(int id, double &fractionOld1, double &fractionOld2,
   double nTotal = 0.0;
   double nTotalOld = 0.0;
   for (int ispecies = 0; ispecies < nspecies; ++ispecies){
-    nTotal += atom->dvector[ispecies][id]; 
+    nTotal += atom->dvector[ispecies][id];
     nTotalOld += atom->dvector[ispecies+nspecies][id];
   }
   if(nTotal < 1e-8 || nTotalOld < 1e-8)
     error->all(FLERR,"The number of molecules in CG particle is less than 1e-8.");
 
-  if (isOneFluid(isite1) == false){ 
+  if (isOneFluid(isite1) == false){
     fractionOld1 = atom->dvector[isite1+nspecies][id]/nTotalOld;
     fraction1 = atom->dvector[isite1][id]/nTotal;
   }
-  if (isOneFluid(isite2) == false){ 
+  if (isOneFluid(isite2) == false){
     fractionOld2 = atom->dvector[isite2+nspecies][id]/nTotalOld;
     fraction2 = atom->dvector[isite2][id]/nTotal;
   }
diff --git a/src/timer.cpp b/src/timer.cpp
index 8711231889..583c6a2b3f 100644
--- a/src/timer.cpp
+++ b/src/timer.cpp
@@ -98,6 +98,7 @@ Timer::Timer(LAMMPS *lmp) : Pointers(lmp)
   _timeout = -1.0;
   _checkfreq = 10;
   _nextcheck = -1;
+  _laststep = -1;
   this->_stamp(RESET);
 }
 
@@ -215,6 +216,7 @@ void Timer::set_wall(enum ttype which, double newtime)
 
 void Timer::init_timeout()
 {
+  _laststep = -1;
   if (_timeout < 0)
     _nextcheck = -1;
   else
@@ -247,6 +249,14 @@ void Timer::print_timeout(FILE *fp)
 
 /* ---------------------------------------------------------------------- */
 
+void Timer::force_timeout()
+{
+  _timeout = 0.0;
+  _nextcheck = _laststep + 1;
+}
+
+/* ---------------------------------------------------------------------- */
+
 bool Timer::_check_timeout()
 {
   double walltime = MPI_Wtime() - timeout_start;
diff --git a/src/timer.h b/src/timer.h
index 903a182128..ff9c66db7c 100644
--- a/src/timer.h
+++ b/src/timer.h
@@ -64,7 +64,7 @@ class Timer : protected Pointers {
   void init_timeout();
 
   // trigger enforced timeout
-  void force_timeout() { _timeout = 0.0; };
+  void force_timeout();
 
   // get remaining time in seconds. 0.0 if inactive, negative if expired
   double get_timeout_remain();
@@ -75,6 +75,7 @@ class Timer : protected Pointers {
   // check for timeout. inline wrapper around internal
   // function to reduce overhead in case there is no check.
   bool check_timeout(int step) {
+    _laststep = step;
     if (_nextcheck != step) return false;
     else return _check_timeout();
   }
@@ -91,7 +92,8 @@ class Timer : protected Pointers {
   int _sync;      // if nonzero, synchronize tasks before setting the timer
   int _timeout;   // max allowed wall time in seconds. infinity if negative
   int _checkfreq; // frequency of timeout checking
-  int _nextcheck; // timestep number of next timeout check
+  int _nextcheck; // loop number of next timeout check
+  int _laststep;  // loop number of last iteration
 
   // update one specific timer array
   void _stamp(enum ttype);