From 80a79079674e30f6c2f8c4441faa7ca51c8ec2ad Mon Sep 17 00:00:00 2001
From: Florian Weik <fweik@icp.uni-stuttgart.de>
Date: Mon, 17 Feb 2020 22:37:24 +0100
Subject: [PATCH] core: Removed unused global

---
 src/core/global.cpp                     | 3 ---
 src/core/global.hpp                     | 1 -
 src/core/particle_data.cpp              | 1 -
 src/core/particle_data.hpp              | 2 --
 src/python/espressomd/globals.pxd       | 2 --
 src/python/espressomd/particle_data.pyx | 8 ++------
 6 files changed, 2 insertions(+), 15 deletions(-)

diff --git a/src/core/global.cpp b/src/core/global.cpp
index 273f067025d..19aeaa6fb3a 100644
--- a/src/core/global.cpp
+++ b/src/core/global.cpp
@@ -150,9 +150,6 @@ const std::unordered_map<int, Datafield> fields{
     {FIELD_MIN_GLOBAL_CUT,
      {&min_global_cut, Datafield::Type::DOUBLE, 1,
       "min_global_cut"}}, /* 43 from interaction_data.cpp */
-    {FIELD_SWIMMING_PARTICLES_EXIST,
-     {&swimming_particles_exist, Datafield::Type::BOOL, 1,
-      "swimming_particles_exist"}}, /* from particle_data.cpp */
 #ifndef PARTICLE_ANISOTROPY
     {FIELD_LANGEVIN_GAMMA_ROTATION,
      {&langevin.gamma_rotation, Datafield::Type::DOUBLE, 1,
diff --git a/src/core/global.hpp b/src/core/global.hpp
index 46fb4554579..d0090dc1099 100644
--- a/src/core/global.hpp
+++ b/src/core/global.hpp
@@ -98,7 +98,6 @@ enum Fields {
   FIELD_THERMALIZEDBONDS,
   FIELD_FORCE_CAP,
   FIELD_THERMO_VIRTUAL,
-  FIELD_SWIMMING_PARTICLES_EXIST,
   /** index of \ref BrownianThermostat::gamma */
   FIELD_BROWNIAN_GAMMA,
   /** index of \ref BrownianThermostat::gamma_rotation */
diff --git a/src/core/particle_data.cpp b/src/core/particle_data.cpp
index 7cafa8639d6..0950f4abb24 100644
--- a/src/core/particle_data.cpp
+++ b/src/core/particle_data.cpp
@@ -388,7 +388,6 @@ void add_id_to_type_map(int part_id, int type);
 
 int max_seen_particle = -1;
 int n_part = 0;
-bool swimming_particles_exist = false;
 /**
  * @brief id -> rank
  */
diff --git a/src/core/particle_data.hpp b/src/core/particle_data.hpp
index d021bb13051..60780a01b48 100644
--- a/src/core/particle_data.hpp
+++ b/src/core/particle_data.hpp
@@ -84,8 +84,6 @@ enum {
 extern int max_seen_particle;
 /** total number of particles on all nodes. */
 extern int n_part;
-/** flag that active swimming particles exist */
-extern bool swimming_particles_exist;
 
 /** id->particle mapping on all nodes. This is used to find partners
  *  of bonded interactions.
diff --git a/src/python/espressomd/globals.pxd b/src/python/espressomd/globals.pxd
index 95ab83edaa7..694ac54fd52 100644
--- a/src/python/espressomd/globals.pxd
+++ b/src/python/espressomd/globals.pxd
@@ -37,7 +37,6 @@ cdef extern from "global.hpp":
     int FIELD_TEMPERATURE
     int FIELD_LANGEVIN_GAMMA
     int FIELD_BROWNIAN_GAMMA
-    int FIELD_SWIMMING_PARTICLES_EXIST
     IF ROTATION:
         int FIELD_LANGEVIN_GAMMA_ROTATION
         int FIELD_BROWNIAN_GAMMA_ROTATION
@@ -74,7 +73,6 @@ cdef extern from "domain_decomposition.hpp":
 
 cdef extern from "particle_data.hpp":
     extern int n_part
-    extern bool swimming_particles_exist
 
 cdef extern from "nonbonded_interactions/nonbonded_interaction_data.hpp":
     double dpd_gamma
diff --git a/src/python/espressomd/particle_data.pyx b/src/python/espressomd/particle_data.pyx
index 045d7efaeba..3d7688ec957 100644
--- a/src/python/espressomd/particle_data.pyx
+++ b/src/python/espressomd/particle_data.pyx
@@ -27,7 +27,7 @@ from .interactions import BondedInteraction
 from .interactions import BondedInteractions
 from .interactions cimport bonded_ia_params
 from copy import copy
-from globals cimport max_seen_particle, time_step, n_part, n_rigidbonds, max_seen_particle_type, swimming_particles_exist, FIELD_SWIMMING_PARTICLES_EXIST, mpi_bcast_parameter
+from globals cimport max_seen_particle, time_step, n_part, n_rigidbonds, max_seen_particle_type, mpi_bcast_parameter
 import collections
 import functools
 import types
@@ -1180,8 +1180,8 @@ cdef class ParticleHandle:
             """
 
             def __set__(self, _params):
-                global swimming_particles_exist
                 cdef particle_parameters_swimming swim
+
                 swim.swimming = True
                 swim.v_swim = 0.0
                 swim.f_swim = 0.0
@@ -1224,10 +1224,6 @@ cdef class ParticleHandle:
                             _params['dipole_length'], 1, float, "dipole_length has to be a float.")
                         swim.dipole_length = _params['dipole_length']
 
-                if swim.f_swim != 0 or swim.v_swim != 0:
-                    swimming_particles_exist = True
-                    mpi_bcast_parameter(FIELD_SWIMMING_PARTICLES_EXIST)
-
                 set_particle_swimming(self._id, swim)
 
             def __get__(self):