diff --git a/y_worker_t/Makefile b/y_worker_t/Makefile
index 67b2c99..88431f0 100644
--- a/y_worker_t/Makefile
+++ b/y_worker_t/Makefile
@@ -5,9 +5,11 @@ INCLUDE_DIRS=$(PWD)/include
 SOCDIR=$(PWD) 
 #$(wildcard $(PWD)/**/include)
 
+TOOLDIR=$(PWD)/../ytools_t
 YLISTDIR=$(PWD)/../list_t
 
-INCLUDE=-I$(INCLUDE_DIRS) -I$(YLISTDIR)/src
+
+INCLUDE=-I$(INCLUDE_DIRS) -I$(YLISTDIR)/src -I$(TOOLDIR)/include
 CFLAGS=-g -lpthread -Wall -Werror -fpic $(INCLUDE) #"-D DEBUG=1" 
 #LDFLAGS=
 
@@ -21,13 +23,14 @@ YTASKSRC_O=$(YTASKSRC:.c=.o)
 YLISTSRC=$(YLISTDIR)/src/list_t/list_t.c
 YLISTSRC_O=$(YLISTSRC:.c=.o)
 
+TOOLSRC_O=$(TOOLDIR)/src/tools_t/tools_t.o
 
 
 TOPTARGETS := all clean 
 
 DEPS=$(YLISTDIR) 
 
-OBJ=$(YWORKSRC_O) $(YLISTSRC_O)
+OBJ=$(YWORKSRC_O) $(YLISTSRC_O) 
 
 $(TOPTARGETS): $(DEPS)
 
diff --git a/y_worker_t/include/y_worker_t/y_task_t.h b/y_worker_t/include/y_worker_t/y_task_t.h
index a988f5f..bd82c61 100644
--- a/y_worker_t/include/y_worker_t/y_task_t.h
+++ b/y_worker_t/include/y_worker_t/y_task_t.h
@@ -2,6 +2,7 @@
 #define Y_TASK_T_H__C
 
 #include <pthread.h>
+#include <unistd.h>
 
 #include "list_t/list_t.h"
 
@@ -33,7 +34,7 @@ void push_tasQ(struct y_tasQ *tasQ, struct y_task_t task);
 struct list_y_TASK_T* pull_tasQ(struct y_tasQ *tasQ);
 
 struct argExecTasQ{
-  int * go_on;
+  int  go_on;
   struct y_tasQ *tasQ;
   struct y_tasQ *historytasQ;
 };
diff --git a/y_worker_t/include/y_worker_t/y_worker_t.h b/y_worker_t/include/y_worker_t/y_worker_t.h
index 03b6384..3a0c410 100644
--- a/y_worker_t/include/y_worker_t/y_worker_t.h
+++ b/y_worker_t/include/y_worker_t/y_worker_t.h
@@ -11,23 +11,47 @@
 #define KILL_WORKER 0
 #define GO_ON_WORKER 1
 
+#define WORKER_ON 1
+#define WORKER_OFF 0
+
+struct argWorker;
+
 typedef struct y_worker_t{
   int exec;
-//  pthread_mutex_t *mut_worker;
-//  pthread_cond_t *cond_worker;
+  int status;
+  pthread_mutex_t *mut_worker;
+  pthread_cond_t *cond_worker;
   size_t id;
-  pthread_t thread;
+  size_t id_thread;
+  pthread_t *thread;
+	struct argWorker *arg;
 } y_WORKER_T;
 
+typedef struct y_worker_t * ptr_y_WORKER_T;
 
-GENERATE_LIST_ALL(y_WORKER_T)
+//GENERATE_LIST_ALL(y_WORKER_T)
 
+GENERATE_LIST_ALL(ptr_y_WORKER_T)
+
+ptr_y_WORKER_T create_ptr_y_WORKER_T(int exec, int id);
+void free_ptr_y_WORKER_T(ptr_y_WORKER_T pworker);
+
+void purge_ptr_y_WORKER_T_in_list(struct main_list_ptr_y_WORKER_T *list_workers);
 
 struct argWorker {
   struct argExecTasQ *argx;
-  struct list_y_WORKER_T *worker;
+  struct y_worker_t *pworker;
+  pthread_mutex_t *mut_workers;
 };
 
+void assign_argWorker_of_ptr_y_WORKER_T(ptr_y_WORKER_T pworker, struct argExecTasQ *argx, pthread_mutex_t *mut_worker);
+
 void* execute_work(void* arg);
 
+void kill_all_workers(
+                struct main_list_ptr_y_WORKER_T * workers,
+                struct argExecTasQ *argx
+);
+void wait_and_free_workers(struct main_list_ptr_y_WORKER_T *workers);
+
 #endif /* Y_WORKER_T_H__C */
diff --git a/y_worker_t/src/y_worker_t/y_task_t.c b/y_worker_t/src/y_worker_t/y_task_t.c
index 9a2d2b2..ce439fc 100644
--- a/y_worker_t/src/y_worker_t/y_task_t.c
+++ b/y_worker_t/src/y_worker_t/y_task_t.c
@@ -34,7 +34,7 @@ void push_tasQ(struct y_tasQ *tasQ, struct y_task_t task){
   printf("debug: push_tasQ fin\n");
 }
 struct list_y_TASK_T* pull_tasQ(struct y_tasQ *tasQ){
-  printf("debug: pull_tasQ debut\n");
+  printf("debug: pull_tasQ debut id_th:%ld\n",pthread_self());
   struct list_y_TASK_T *valueRet = NULL;
   pthread_mutex_lock(tasQ->mut_tasQ);
   while(tasQ->list_tasQ->end_list == NULL){
@@ -46,31 +46,37 @@ struct list_y_TASK_T* pull_tasQ(struct y_tasQ *tasQ){
   pthread_mutex_unlock(tasQ->mut_tasQ);
  
 
-  printf("debug: pull_tasQ fin : is valueRet NULL ? = %d\n", valueRet == NULL);
+  printf("debug: pull_tasQ fin : is valueRet NULL ? = %d, id_th:%ld\n", valueRet == NULL, pthread_self());
   return valueRet;
 }
 
 struct argExecTasQ * create_argExecTasQ(){
   struct argExecTasQ * retasQ = malloc(sizeof(struct argExecTasQ));
-  retasQ->go_on = malloc(sizeof(int));
-  *(retasQ->go_on)=1;
+  (retasQ->go_on)=1;
   retasQ->tasQ = create_y_tasQ();
   retasQ->historytasQ = create_y_tasQ();
   return retasQ;
 }
 void free_argExecTasQ(struct argExecTasQ * arg){
-  free(arg->go_on);
   free_y_tasQ(arg->tasQ);
   free_y_tasQ(arg->historytasQ);
   free(arg);
 }
 
+int check_go_on_tasQ(struct argExecTasQ *argx){
+	int ret;
+	pthread_mutex_lock(argx->tasQ->mut_tasQ);
+	ret = (argx->go_on);
+	pthread_mutex_unlock(argx->tasQ->mut_tasQ);
+	return ret;
+}
+
 void * execute_task(void *arg){
   struct argExecTasQ *argx = (struct argExecTasQ *)arg;
   struct y_tasQ *tasQ = argx->tasQ;
   struct y_tasQ *historytasQ = argx->historytasQ;
   struct list_y_TASK_T *l_task=NULL;
-  while(*(argx->go_on)){
+  while(check_go_on_tasQ(argx)){
 
     l_task = pull_tasQ(tasQ);
     printf("debug: is l_task NULL? = %d\n", l_task==NULL);
@@ -86,6 +92,9 @@ void * execute_task(void *arg){
 
 
   }
+    printf("debug: -------------------> exit task exec \n");
+    usleep(1000);
+  return NULL;
 }
 
 
diff --git a/y_worker_t/src/y_worker_t/y_worker_t.c b/y_worker_t/src/y_worker_t/y_worker_t.c
index 8776acb..0f75274 100644
--- a/y_worker_t/src/y_worker_t/y_worker_t.c
+++ b/y_worker_t/src/y_worker_t/y_worker_t.c
@@ -1,18 +1,147 @@
 #include "y_worker_t/y_worker_t.h"
 
-GEN_LIST_ALL(y_WORKER_T)
+//GEN_LIST_ALL(y_WORKER_T)
+
+GEN_LIST_ALL(ptr_y_WORKER_T)
+
+ptr_y_WORKER_T create_ptr_y_WORKER_T(int exec, int id){
+	ptr_y_WORKER_T pworker = malloc(sizeof(y_WORKER_T));
+	pworker->exec=exec;
+	pworker->mut_worker = malloc(sizeof(pthread_mutex_t));
+	pthread_mutex_init(pworker->mut_worker, NULL);
+	pworker->cond_worker = malloc(sizeof(pthread_cond_t));
+	pthread_cond_init(pworker->cond_worker, NULL);
+	pworker->id=id;
+	pworker->thread = malloc(sizeof(pthread_t));
+
+	pworker->arg = NULL;
+
+	return pworker;
+}
+void free_ptr_y_WORKER_T(ptr_y_WORKER_T pworker){
+	//ptr_y_WORKER_T pworker = *p_worker;
+	pthread_mutex_destroy(pworker->mut_worker);
+	free(pworker->mut_worker);
+	pthread_cond_destroy(pworker->cond_worker);
+	free(pworker->cond_worker);
+	free(pworker->thread);
+	if(pworker->arg!=NULL) free(pworker->arg);
+	free(pworker);
+}
+
+void purge_ptr_y_WORKER_T_in_list(struct main_list_ptr_y_WORKER_T *list_workers){
+	for(move_current_to_begin_list_ptr_y_WORKER_T(list_workers); list_workers->current_list; increment_list_ptr_y_WORKER_T(list_workers)){
+		free_ptr_y_WORKER_T(list_workers->current_list->value);
+	}
+}
+
+void assign_argWorker_of_ptr_y_WORKER_T(ptr_y_WORKER_T pworker, struct argExecTasQ *argx, pthread_mutex_t *mut_workers){
+	pworker->arg = malloc(sizeof( struct argWorker));
+	pworker->arg->argx = argx;
+	pworker->arg->pworker = pworker;
+	pworker->arg->mut_workers = mut_workers;
+
+}
 
 void* execute_work(void* arg){
   struct argWorker *argw = (struct argWorker*)arg;
   struct argExecTasQ *argx=argw->argx;
-  struct list_y_WORKER_T * worker = argw->worker;
+//  pthread_mutex_t *mut_workers=argw->mut_workers;
+  struct y_worker_t * pworker = argw->pworker;
+
   size_t id_thread=pthread_self();
+  int exec;
+  pthread_mutex_lock(pworker->mut_worker);
+  exec=pworker->exec;
+  pworker->status=WORKER_ON;
+  pworker->id_thread=id_thread;
+  pthread_mutex_unlock(pworker->mut_worker);
+    printf("debug: ############################ execute_task call : thread_id:%ld, self=%ld \n",pworker->id,id_thread);
   do{
-    printf("debug: execute_task call : thread_id:%ld, self=%ld \n",worker->value.id,id_thread);
+    printf("debug: execute_task call : thread_id:%ld, self=%ld \n",pworker->id,id_thread);
     execute_task((void*)argx);
-    printf("debug: execute_task end, worker exec=%d \n",worker->value.exec);
-  }while(worker->value.exec);
+    printf("debug: <<<<>>>> execute_task end, worker exec=%d id:%ld self:%ld \n",exec,pworker->id, pworker->id_thread);
+  pthread_mutex_lock(pworker->mut_worker);
+  exec=pworker->exec;
+  pthread_mutex_unlock(pworker->mut_worker);
+    printf("debug: execute_task end, worker exec=%d id:%ld self:%ld \n",exec,pworker->id, pworker->id_thread);
+  }while(exec);
 
   
+  pthread_mutex_lock(pworker->mut_worker);
+  pworker->status=WORKER_OFF;
+    printf("debug: =========>>>  execute_task end, worker OFF =%d, id=%ld self:%ld\n",pworker->status, pworker->id, pworker->id_thread);
+  pthread_mutex_unlock(pworker->mut_worker);
+	pthread_cond_signal(pworker->cond_worker);
   //free_y_worker_t(worker);
+//	usleep(1000);
+  return NULL;
+}
+
+void kill_all_workers(
+								struct main_list_ptr_y_WORKER_T * workers,
+								struct argExecTasQ *argx
+){
+  for(move_current_to_begin_list_ptr_y_WORKER_T(workers); workers->current_list;increment_list_ptr_y_WORKER_T(workers)){
+      pthread_mutex_lock(workers->current_list->value->mut_worker);
+      workers->current_list->value->exec=KILL_WORKER;
+      pthread_mutex_unlock(workers->current_list->value->mut_worker);
+  }
+
+  pthread_mutex_lock(argx->tasQ->mut_tasQ);
+  (argx->go_on)=0;
+  pthread_mutex_unlock(argx->tasQ->mut_tasQ);
+
+
+  for(move_current_to_begin_list_ptr_y_WORKER_T(workers); workers->current_list;increment_list_ptr_y_WORKER_T(workers)){
+    //if(workers->current_list->value->status == WORKER_ON)
+    {
+      struct y_task_t task = {
+        .func=NULL,
+        .arg=argx,
+        .status=TASK_DONE,
+      };
+      push_tasQ(argx->tasQ, task);
+    }
+  }
+
+}
+
+
+void wait_and_free_workers(struct main_list_ptr_y_WORKER_T *workers){
+  int reterror; 
+  for(move_current_to_begin_list_ptr_y_WORKER_T(workers); workers->current_list;increment_list_ptr_y_WORKER_T(workers)){
+    pthread_mutex_lock(workers->current_list->value->mut_worker);
+    if((workers->current_list->value->status) == WORKER_ON){
+      while(workers->current_list->value->status == WORKER_ON){
+        pthread_cond_wait(workers->current_list->value->cond_worker, workers->current_list->value->mut_worker);
+      }
+      reterror = pthread_join(*(workers->current_list->value->thread) ,NULL);
+      if(0!=reterror){
+      printf("debug: error %d pthread_join  thread %ld\n",reterror,(workers->current_list->value->id));
+    }
+    printf("debug: JOIN done, thread id:%ld id_thread:%ld\n",
+        (workers->current_list->value->id),
+        (workers->current_list->value->id_thread)
+        );
+    }else{
+    printf("debug: thread id:%ld id_thread:%ld already KILLED\n",
+        (workers->current_list->value->id),
+        (workers->current_list->value->id_thread)
+        );
+
+    }
+
+    workers->current_list->value->status=WORKER_OFF;
+    pthread_mutex_unlock(workers->current_list->value->mut_worker);
+  }
+
+//  free_argExecTasQ(argx);
+  purge_ptr_y_WORKER_T_in_list(workers);
+  free_all_var_list_ptr_y_WORKER_T(workers);
+
+//  pthread_mutex_destroy(mut_workers);
+//  free(mut_workers);
+
+
 }
diff --git a/y_worker_t/test/Makefile b/y_worker_t/test/Makefile
index f8f3aaf..2cf363d 100644
--- a/y_worker_t/test/Makefile
+++ b/y_worker_t/test/Makefile
@@ -10,7 +10,7 @@ YLISTDIR=$(PWD)/../../list_t
 ROOT_DIR=$(PWD)/..
 INCLUDE_DIR=$(ROOT_DIR)/include
 CFLAGS=-I$(INCLUDE_DIR) -I$(YTESTDIR)/include_ytest/include -I$(YLISTDIR)/src
-LDFLAGS=-L$(YTESTDIR) -lytest -lpthread -lm -lOpenCL
+LDFLAGS=-L$(YTESTDIR) -lytest -lpthread -lm -lOpenCL -Wall -Werror
 
 #SRC_DIR=$(ROOT_DIR)/src
 #SRC=$(wildcard */*/*.c) 
diff --git a/y_worker_t/test/is_good.c b/y_worker_t/test/is_good.c
index 77980ae..33394aa 100644
--- a/y_worker_t/test/is_good.c
+++ b/y_worker_t/test/is_good.c
@@ -25,8 +25,9 @@
 
 #define VALGRIND_ 1
 
+#if 0
 TEST(first){
-  struct y_tasQ tasQ0 ;
+  //struct y_tasQ tasQ0 ;
   struct y_tasQ *tasQ = create_y_tasQ();
 
   free_y_tasQ(tasQ);    
@@ -48,44 +49,58 @@ TEST(worker){
 
 
 }
+#endif 
 
 void* funcPrintSelf(void* arg){
-  LOG("begin fun call\n");
+  LOG("func: begin func call\n");
   struct argExecTasQ *argx=(struct argExecTasQ*)arg;
-  int randomm=rand()%1000;
+  static long int count = 0; //randomm=rand()%1000;
   size_t thread_id=pthread_self();
-  LOG("my status=%d, idfunc=%d; threadid=%ld\n",*(argx->go_on), randomm, thread_id);
+  LOG("func: my status=%d, func number=%ld; threadid=%ld\n",(argx->go_on), count, thread_id);
   usleep(200000);
-  LOG("end func%d; in thread=%ld\n",randomm,thread_id);
+  LOG("func: end func %ld; in thread=%ld\n",count,thread_id);
+	++count;
+  return NULL;
 }
 
+void* funcEnd(void* arg){
+  LOG("funcEnd: begin func End\n");
+  struct argExecTasQ *argx=(struct argExecTasQ*)arg;
+  static long int count = 0; //randomm=rand()%1000;
+  size_t thread_id=pthread_self();
+  LOG("funcEnd: my status=%d, func number=%ld; threadid=%ld\n",(argx->go_on), count, thread_id);
+  usleep(20000);
+  LOG("funcEnd: end func %ld; in thread=%ld\n",count,thread_id);
+	++count;
+  return NULL;
+}
+
+
+
 TEST(threads){
 
   srand(time(NULL));
-  struct main_list_y_WORKER_T * workers = create_var_list_y_WORKER_T();
+  struct main_list_ptr_y_WORKER_T * workers = create_var_list_ptr_y_WORKER_T();
   struct argExecTasQ *argx =  create_argExecTasQ();
-  
+  pthread_mutex_t *mut_workers = malloc(sizeof(pthread_mutex_t));
+  pthread_mutex_init(mut_workers, NULL);  
   
   
   for(int i=0; i<4; ++i){
-    struct y_worker_t w={.exec=GO_ON_WORKER, .id=i};
-    struct list_y_WORKER_T * liwo=malloc(sizeof(struct list_y_WORKER_T));
-    liwo->value=w;
-    //liwo->preview=NULL;
-    liwo->next=NULL;
-    append_list_y_WORKER_T(workers, liwo);
-    //push_back_list_y_WORKER_T(workers, w);
-    struct argWorker argw;
-    argw.argx = argx;
-    argw.worker=workers->end_list;
-  LOG("%d workers %ld created\n",4,argw.worker->value.id);
-    pthread_create(&(w.thread),NULL,execute_work,(void*)&argw);
-//usleep(5000);
+    struct y_worker_t *pw= create_ptr_y_WORKER_T(GO_ON_WORKER, i);
+    assign_argWorker_of_ptr_y_WORKER_T(pw, argx, mut_workers);
+    pthread_mutex_lock(mut_workers);
+    //append_list_ptr_y_WORKER_T(workers, li_pw);
+    push_back_list_ptr_y_WORKER_T(workers, pw);
+    pthread_mutex_unlock(mut_workers);
+  LOG("%d workers %ld created\n",4,(pw->arg->pworker->id));
+    pthread_create(pw->thread,NULL,execute_work,(void*)(pw->arg));
+//usleep(500);
   }
-usleep(500000);
+//usleep(500000);
  
 
-  for(int i=0; i<10;++i)
+  for(int i=0; i<40;++i)
   { 
     struct y_task_t task = {
       .func=funcPrintSelf,
@@ -93,58 +108,30 @@ usleep(500000);
       .status=TASK_PENDING,
     };
     push_tasQ(argx->tasQ, task);
-    usleep(10000);
+//    usleep(10000);
   }
   LOG("%d tasks created\n",40);
 
-  for(int i=4; i<8; ++i){
-    struct y_worker_t w={.exec=GO_ON_WORKER, .id=i};
-    struct list_y_WORKER_T * liwo=malloc(sizeof(struct list_y_WORKER_T));
-    liwo->value=w;
-    //liwo->preview=NULL;
-    liwo->next=NULL;
-    append_list_y_WORKER_T(workers, liwo);
-    //push_back_list_y_WORKER_T(workers, w);
-    struct argWorker argw;
-    argw.argx = argx;
-    argw.worker=workers->end_list;
-    pthread_create(&(w.thread),NULL,execute_work,(void*)&argw);
-usleep(5000);
+	for(int i=4; i<8; ++i){
+    struct y_worker_t *pw= create_ptr_y_WORKER_T(GO_ON_WORKER, i);
+    assign_argWorker_of_ptr_y_WORKER_T(pw, argx, mut_workers);
+    pthread_mutex_lock(mut_workers);
+    //append_list_ptr_y_WORKER_T(workers, li_pw);
+    push_back_list_ptr_y_WORKER_T(workers, pw);
+    pthread_mutex_unlock(mut_workers);
+  LOG("%d workers %ld created\n",4,(pw->arg->pworker->id));
+    pthread_create(pw->thread,NULL,execute_work,(void*)(pw->arg));
+//usleep(500);
   }
-  LOG("another %d workers created\n",4);
+ LOG("another %d workers created\n",4);
 
+	kill_all_workers(workers, argx);
 
+	wait_and_free_workers(workers);
 
-
-
-
-//  usleep(400000);
-  for(move_current_to_begin_list_y_WORKER_T(workers); workers->current_list;increment_list_y_WORKER_T(workers)){
-    workers->current_list->value.exec=KILL_WORKER;
-  }
-  
-  *(argx->go_on)=0;
-
-  for(move_current_to_begin_list_y_WORKER_T(workers); workers->current_list;increment_list_y_WORKER_T(workers)){
-    struct y_task_t task = {
-      .func=NULL,
-      .arg=argx,
-      .status=TASK_DONE,
-    };
-    push_tasQ(argx->tasQ, task);
-
-  }
-
-  
-  for(move_current_to_begin_list_y_WORKER_T(workers); workers->current_list;increment_list_y_WORKER_T(workers)){
-    pthread_join(workers->current_list->value.thread ,NULL);
-    LOG("debug: JOIN donei, thread id:%ld\n",workers->current_list->value.id);
-  }
-
-//  usleep(5000000);
   free_argExecTasQ(argx);
-  free_all_var_list_y_WORKER_T(workers);
-  
+  pthread_mutex_destroy(mut_workers);
+  free(mut_workers);  
 
 }