cache_t *lru_cache_create(void *arg, data_attr_t *da, int timeout)
{
cache_t *cache;
cache_lru_t *c;
type_malloc_clear(cache, cache_t, 1);
type_malloc_clear(c, cache_lru_t, 1);
cache->fn.priv = c;
cache_base_create(cache, da, timeout);
cache->shutdown_request = 0;
c->stack = new_stack();
c->waiting_stack = new_stack();
c->pending_free_tasks = new_stack();
c->max_bytes = 100*1024*1024;
c->bytes_used = 0;
c->dirty_fraction = 0.1;
cache->n_ppages = 0;
cache->max_fetch_fraction = 0.1;
cache->max_fetch_size = cache->max_fetch_fraction * c->max_bytes;
cache->write_temp_overflow_used = 0;
cache->write_temp_overflow_fraction = 0.01;
cache->write_temp_overflow_size = cache->write_temp_overflow_fraction * c->max_bytes;
c->dirty_bytes_trigger = c->dirty_fraction * c->max_bytes;
c->dirty_max_wait = apr_time_make(1, 0);
c->flush_in_progress = 0;
c->limbo_pages = 0;
c->free_pending_tables = new_pigeon_coop("free_pending_tables", 50, sizeof(list_t *), cache->mpool, free_pending_table_new, free_pending_table_free);
c->free_page_tables = new_pigeon_coop("free_page_tables", 50, sizeof(page_table_t), cache->mpool, free_page_tables_new, free_page_tables_free);
cache->fn.create_empty_page = lru_create_empty_page;
cache->fn.adjust_dirty = lru_adjust_dirty;
cache->fn.destroy_pages = lru_pages_destroy;
cache->fn.cache_update = lru_update;
cache->fn.cache_miss_tag = lru_miss_tag;
cache->fn.s_page_access = lru_page_access;
cache->fn.s_pages_release = lru_pages_release;
cache->fn.destroy = lru_cache_destroy;
cache->fn.adding_segment = lru_adding_segment;
cache->fn.removing_segment = lru_removing_segment;
cache->fn.get_handle = cache_base_handle;
apr_thread_cond_create(&(c->dirty_trigger), cache->mpool);
thread_create_assert(&(c->dirty_thread), NULL, lru_dirty_thread, (void *)cache, cache->mpool);
return(cache);
}
main()
{
Queue q;
Stack s;
Jval v;
IS is;
int i;
q = new_queue();
s = new_stack();
i = 0;
is = new_inputstruct(NULL);
while (get_line(is) >= 0) {
if (i % 2 == 0) {
queue_enqueue(q, new_jval_s(strdup(is->fields[0])));
} else {
stack_push(s, new_jval_s(strdup(is->fields[0])));
}
i++;
}
while (!queue_empty(q)) {
v = queue_dequeue(q);
printf("%s\n", v.s);
}
while (!stack_empty(s)) {
v = stack_pop(s);
printf("%s\n", v.s);
}
}
char *str_to_btree_it(t_def *def, int first, int last)
{
t_stack *node;
t_number *nbr;
char *number;
int i;
if ((node = new_stack(NULL, 0, first, 0)) == NULL)
return (NULL);
node->last = last;
if ((nbr = new_number(NULL, NULL)) == NULL)
return (NULL);
while (node != NULL)
{
find_first_last(&first, &last, def, node);
if ((i = find_the_operator(def, first, last)) == -1)
nbr = calc_in_bt(&node, &nbr, def);
else
number = stack_me_that(def, &node, &nbr, i);
if (nbr == NULL || number == NULL)
return (NULL);
}
number = nbr->nbr;
free(nbr->prev);
free(nbr);
return (number);
}
int main(int argc, char *argv[])
{
stack *s;
item_type item;
item = 10;
if (new_stack(&s) < 0 ) {
printf("Error in initializing the stack\n");
return 0;
}
push(s, &item);
printf("Item:%d, Empty?%s, size:%d\n", size(s), empty(s)? "Yes": "No", item);
if (pop(s, &item) < 0) {
printf("Invalid pop access\n");
return 0;
}
printf("Item:%d, Empty?%s, size:%d\n", size(s), empty(s)? "Yes": "No", item);
if (pop(s, &item) ) {
printf("Invalid pop access\n");
return 0;
}
printf("Item:%d, Empty?%s, size:%d\n", size(s), empty(s)? "Yes": "No", item);
return 0;
}
main()
{
IS is;
Queue q;
Stack s;
Dllist l;
int i;
Jval j;
is = new_inputstruct(NULL);
while (get_line(is) > 0) {
q = new_queue();
s = new_stack();
l = new_dllist();
for (i = 0; i < strlen(is->fields[0]); i++) {
queue_enqueue(q, new_jval_c(is->fields[0][i]));
stack_push(s, new_jval_c(is->fields[0][i]));
dll_append(l, new_jval_c(is->fields[0][i]));
dll_prepend(l, new_jval_c(is->fields[0][i]));
}
while (!queue_empty(q)) {
j = queue_dequeue(q); printf("%c", j.c);
j = stack_pop(s); printf("%c", j.c);
printf("%c", l->flink->val.c); dll_delete_node(l->flink);
printf("%c", l->flink->val.c); dll_delete_node(l->flink);
printf(" ");
}
printf("\n");
free_queue(q);
free_stack(s);
free_dllist(l);
}
}
int main (int argc, char **argv) {
program_name = basename (argv[0]);
scan_options (argc, argv);
stack *stack = new_stack ();
token *scanner = new_token (stdin);
for (;;) {
int token = scan_token (scanner);
if (token == EOF) break;
switch (token) {
case NUMBER: do_push (stack, peek_token (scanner)); break;
case '+': do_binop (stack, add_bigint); break;
case '-': do_binop (stack, sub_bigint); break;
case '*': do_binop (stack, mul_bigint); break;
case 'c': do_clear (stack); break;
case 'f': do_print_all (stack); break;
case 'p': do_print (stack); break;
default: unimplemented (token); break;
}
}
do_clear(stack);
free_stack(stack);
free_token(scanner);
DEBUGF ('m', "EXIT %d\n", exit_status);
return EXIT_SUCCESS;
}
int main(int argc, char **argv) {
int i;
int x;
int p;
Stack stack = new_stack(argc);
for(i=0; i <= argc; i++){
if(argv[i] == NULL){
printf("you have no args %d", i);
break;
}
else if(isdigit(argv[i][0])){
p = atoi(argv[i]);
printf("arg %d\n", p);
push_stack(stack, p);
}
else if(strcmp(argv[i],"+")==0 || strcmp(argv[i],"-")==0 || strcmp(argv[i],"x")==0 || strcmp(argv[i],"/")==0){
printf("arg %s\n", argv[i]);
char* arg = argv[i];
calc(arg, stack);
}
else{
printf("args %s", argv[i]);
}
}
}
int main (int argc, char **argv) {
program_name = basename (argv[0]);
scan_options (argc, argv);
stack *stack = new_stack ();
bool quit = false;
yy_flex_debug = false;
while (! quit) {
int token = yylex();
if (token == YYEOF) break;
switch (token) {
case NUMBER: do_push (stack, yytext); break;
case '+': do_binop (stack, add_bigint); break;
case '-': do_binop (stack, sub_bigint); break;
case '*': do_binop (stack, mul_bigint); break;
case 'c': do_clear (stack); break;
case 'f': do_print_all (stack); break;
case 'p': do_print (stack); break;
case 'q': quit = true; break;
default: unimplemented (token); break;
}
}
yycleanup();
DEBUGF ('m', "EXIT %d\n", exit_status);
do_clear(stack);
free_stack(stack);
return EXIT_SUCCESS;
}
Stack *Read_LSM_Stack(char *file_name)
{
Stack *stack;
TIFF *tif;
int depth, width, height, kind;
tif = Open_Tiff(file_name,"r");
if (!tif) return 0; //070805, bu Hanchuan Peng
depth = 1;
while (TIFFReadDirectory(tif))
depth += 1;
TIFFClose(tif);
depth = depth / 2; /* half the dirs are thumbnails */
tif = Open_Tiff(file_name,"r");
TIFFGetField(tif, TIFFTAG_IMAGEWIDTH, &width);
TIFFGetField(tif, TIFFTAG_IMAGELENGTH, &height);
kind = determine_kind(tif);
stack = new_stack(depth*height*width*kind,"Read_Stack");
stack->width = width;
stack->height = height;
stack->depth = depth;
stack->kind = kind;
printf("test1 done\n");
int d;
d = 0;
/* read every other directory (real data, the in between are thumbnails */
while (1)
{
read_directory(tif,Select_Plane(stack,d),"Read_Stack");
d += 1;
if (!TIFFReadDirectory(tif)) break;
/* skip the one we just read, it's a thumbnail */
if (!TIFFReadDirectory(tif)) break;
TIFFGetField(tif, TIFFTAG_IMAGEWIDTH, &width);
TIFFGetField(tif, TIFFTAG_IMAGELENGTH, &height);
if (width != stack->width || height != stack->height)
error("Images of stack are not of the same dimensions!",NULL);
kind = determine_kind(tif);
if (kind != stack->kind)
error("Images of stack are not of the same type (GREY, GREY16, or COLOR)!",NULL);
}
TIFFClose(tif);
return (stack);
}
void push(stack_t* stack, void* d)
{
stack_t *s;
s = new_stack();
s->data = d;
s->next = stack->next;
stack->next = s;
}
double farmer(int numprocs) {
MPI_Status status;
stack* bag_of_tasks = new_stack();
int i,id;
int tag = -1;
double area = 0.0;
/* slackers is a variable to keep track of the free ("slacking") processes.*/
int slackers = numprocs-1;
int* is_worker_busy = (int*) malloc(sizeof(int)*(numprocs-1));
/* An integer array for workers. If 1 then the worker is busy if 0 then it is not doing any tasks.
We fill the array with zeroes initially since none of the workers are working. */
for (i=0;i<slackers;i++){
is_worker_busy[i] = 0;
}
double point[2];
point[0] = A;
point[1] = B;
/* We push the initial task on the bag of tasks stack*/
push(point, bag_of_tasks);
while ((!is_empty(bag_of_tasks)||slackers!=0)&&(tag!=READY_TAG)){
MPI_Recv(point, 2, MPI_DOUBLE, MPI_ANY_SOURCE, MPI_ANY_TAG, MPI_COMM_WORLD, &status);
id = status.MPI_SOURCE;
tag = status.MPI_TAG;
is_worker_busy[id-1] = 1;
slackers--;
if ( tag == AREA_TAG) {
area += point[0];
}
else if (tag == SPLIT_TAG) {
push(point,bag_of_tasks);
MPI_Recv(point, 2, MPI_DOUBLE, id, tag, MPI_COMM_WORLD, &status);
push(point,bag_of_tasks);
}
slackers=send_tasks(bag_of_tasks,is_worker_busy,slackers,tasks_per_process);
}
// Signal all the workers that we are ready.
for (i=1;i<numprocs;i++) {
MPI_Send(NULL, 0, MPI_INT, i, READY_TAG, MPI_COMM_WORLD);
}
return area;
}
Stack *Read_Stack_Planes(char *prefix, int num_width, int first_num)
{ Stack *stack;
char sname[1000];
int width, height, depth, kind;
TIFF *tif;
depth = 0;
while (1)
{ FILE *fd;
sprintf(sname,"%s%0*d.tif",prefix,num_width,first_num+depth);
if ((fd = fopen(sname,"r")) == NULL)
break;
fclose(fd);
depth += 1;
}
sprintf(sname,"%s%0*d.tif",prefix,num_width,first_num);
tif = Open_Tiff(sname,"r");
TIFFGetField(tif, TIFFTAG_IMAGEWIDTH, &width);
TIFFGetField(tif, TIFFTAG_IMAGELENGTH, &height);
kind = determine_kind(tif);
stack = new_stack(depth*height*width*kind,"Read_Stack_Planes");
stack->width = width;
stack->height = height;
stack->depth = depth;
stack->kind = kind;
{ int d;
d = 0;
while (1)
{ read_directory(tif,Select_Plane(stack,d),"Read_Stack_Planes");
TIFFClose(tif);
d += 1;
if (d >= depth) break;
sprintf(sname,"%s%0*d.tif",prefix,num_width,first_num+d);
tif = Open_Tiff(sname,"r");
TIFFGetField(tif, TIFFTAG_IMAGEWIDTH, &width);
TIFFGetField(tif, TIFFTAG_IMAGELENGTH, &height);
if (width != stack->width || height != stack->height)
error("Images of stack are not of the same dimensions!",NULL);
kind = determine_kind(tif);
if (kind != stack->kind)
error("Images of stack are not of the same type (GREY, GREY16, or COLOR)!",NULL);
}
}
return (stack);
}
int main() {
node* stack = new_stack();
int i;
for (i=0; i<10; i++) {
stack_push(stack, i);
}
assert(stack_peek(stack) == 9);
assert(stack_pop(stack) == 9);
assert(stack_peek(stack) == 8);
}
Stack *Copy_Stack(Stack *stack)
{ Stack *copy = new_stack(stack_vsize(stack),"Copy_Stack");
copy->kind = stack->kind;
copy->width = stack->width;
copy->height = stack->height;
copy->depth = stack->depth;
memcpy(copy->array,stack->array,stack_vsize(stack));
return (copy);
}
/**
* Pushes a value onto the stack.
* @param value The value to be pushed onto the stack.
* @return 0 upon success or 1 if an memory error occurs.
*/
int push(int value) {
if (!stack && new_stack(INITIAL_CAPACITY)) {
return 1;
}
if (stack->size == stack->capacity && extend_capacity(stack->capacity * 2)) {
return 1;
}
stack->values[stack->size++] = value;
return 0;
}
void parse_input(FILE* input, list__t* w_list)
{
char c;
char* str;
int strlen = 0;
link__t* w_link;
int str_exist;
stack__t* stack = new_stack();
for(;;){
c = fgetc(input);
if(isalnum(c) && !isspace(c)){
stack_push(stack , c);
}else if(c != EOF){
if(stack->next != NULL){//stack empty do nothing
strlen = stack_size(stack);
str = xmalloc( strlen + 1 );
str[strlen] = stack->c;// the head has the value '\0'
while(stack->next != NULL)
str[--strlen] = tolower(stack_pop(stack));
w_list->word_count ++;
/**
* Loop through the list and check if the word already exist
*/
link__t* w_link = w_list->first;
while( w_link != NULL ){
if( !strcmp ( str , w_link->word->text) ){
w_link->word->count+=1;
break;
}
w_link = w_link->next;
}
if(w_link == NULL)
insert__last(w_list, str);
free(str);
}
}else
break;
}
free_stack(&stack);
}
void gop_dummy_init()
{
//** Make the variables
assert_result(apr_pool_create(&gd_pool, NULL), APR_SUCCESS);
assert_result(apr_thread_mutex_create(&gd_lock, APR_THREAD_MUTEX_DEFAULT, gd_pool), APR_SUCCESS);
assert_result(apr_thread_cond_create(&gd_cond, gd_pool), APR_SUCCESS);
gd_stack = new_stack();
//** and launch the thread
thread_create_assert(&gd_thread, NULL, gd_thread_func, NULL, gd_pool);
}
// List directories in depth first order
void recursive_list (char *path) {
stack = new_stack ();
push_stack (stack, path);
for (;;) {
char *dir = pop_stack (stack);
printf ("%s:\n", dir);
list (dir);
if (is_empty_stack (stack)) break;
printf ("\n");
}
free_stack (stack);
}
void Thread::shrink_execution_stack(int new_stack_size) {
GCDisabler dont_gc_for_rest_of_this_method;
ExecutionStack::Raw old_stack = execution_stack();
GUARANTEE(new_stack_size < old_stack().length(), "sanity check");
ExecutionStack::Raw new_stack = old_stack().shrink_in_place(new_stack_size);
// We shrink the stack in place, so we do not need to discard the
// old stack in any way. Universe::shrink_object takes care of that.
set_execution_stack(&new_stack);
new_stack().set_thread(this);
set_stack_limit();
}
int main(int argc, char *argv[])
{
const struct option options[] = {
{"help", no_argument, NULL, 'h'},
{"debug", no_argument, NULL, 'd'},
{"version", no_argument, NULL, 'v'},
{"silent", no_argument, NULL, 's'},
{"persist", no_argument, NULL, 'p'},
{0, 0, 0, 0},
};
char opt;
while ((opt = getopt_long(argc, argv, "+hdvsp", options, NULL)) != -1)
{
switch (opt)
{
case 'h':
puts("Usage: vu [OPTIONS] [module [SCRIPT ARGUMENTS]]\n"
" -h, --help Show this help message and exit\n"
" -v, --version Show the VM version and exit\n"
" -d, --debug Enable debugging\n"
" -s, --silent Do not print the stack after running\n"
" -p, --persist Use standard input and output to persist the stack\n"
" This option is intended for internal use; implies --silent");
return 0;
case 'v':
printf("vu virtual machine 0.2\nbyte code protocol %d.%d\n", VERSION >> 4, VERSION & 15);
return 0;
case 's':
vm_silent = true;
break;
case 'd':
vm_debug = true;
break;
case 'p':
vm_persist = true;
vm_silent = true;
break;
}
}
signal(SIGINT, handle_interrupt);
init_module_path();
init_errors();
V global = new_global_scope();
V v_eva = open_std_lib(toHashMap(toScope(global)->env));
Stack *S = new_stack();
init_argv(argc - optind, argv + optind, v_eva);
run(global, S);
clear_stack(S);
return 0;
}
Task_que_t *create_task_que()
{
Task_que_t *tq;
// if ((tq = g_slice_new(Task_que_t)) == NULL) {
if ((tq = (Task_que_t *)malloc(sizeof(Task_que_t))) == NULL) {
log_printf(0, "create_task_que: Unable to allocate new struct!\n");
flush_log();
return(NULL);
}
tq->cid = NULL;
tq->refcount = 0;
tq->op = -1;
tq->owner = -1;
tq->lock_inuse = 0;
tq->io_que[TASK_READ_QUE] = new_stack();
tq->io_que[TASK_WRITE_QUE] = new_stack();
pthread_mutex_init(&(tq->qlock), NULL);
return(tq);
}
int main()
{
struct Stack* s = new_stack(2);
int i;
for(i = 0; i < 100; ++i)
{
push(s, i);
}
printf("stack len:%d\n", s->len);
for(i = 0; i < 100; ++i)
{
printf("pop:%d\n", pop(s));
}
}
Stack *Read_Stack(char *file_name)
{ Stack *stack;
TIFF *tif;
int depth, width, height, kind;
tif = Open_Tiff(file_name,"r");
depth = 1;
while (TIFFReadDirectory(tif))
depth += 1;
TIFFClose(tif);
tif = Open_Tiff(file_name,"r");
TIFFGetField(tif, TIFFTAG_IMAGEWIDTH, &width);
TIFFGetField(tif, TIFFTAG_IMAGELENGTH, &height);
kind = determine_kind(tif);
stack = new_stack(depth*height*width*kind,"Read_Stack");
stack->width = width;
stack->height = height;
stack->depth = depth;
stack->kind = kind;
{ int d;
d = 0;
while (1)
{ read_directory(tif,Select_Plane(stack,d),"Read_Stack");
d += 1;
if (!TIFFReadDirectory(tif)) break;
TIFFGetField(tif, TIFFTAG_IMAGEWIDTH, &width);
TIFFGetField(tif, TIFFTAG_IMAGELENGTH, &height);
if (width != stack->width || height != stack->height)
error("Images of stack are not of the same dimensions!",NULL);
kind = determine_kind(tif);
if (kind != stack->kind)
error("Images of stack are not of the same type (GREY, GREY16, or COLOR)!",NULL);
}
}
TIFFClose(tif);
return (stack);
}
/**
* Extends the capacity of the stack (for big values, allows not to reallocate several successive times the stack).
* Values added on the stack are left uninitialized.
* @param size The number of blocs to add.
* @return 0 upon success or 1 if an memory error occurs.
*/
int extend_stack(int size) {
int required_cap = stack->size + size, new_size;
if (!stack && new_stack(size > INITIAL_CAPACITY ? size : INITIAL_CAPACITY)) {
return 1;
}
if (required_cap > stack->capacity) {
new_size = stack->capacity * 2;
if (extend_capacity(new_size > required_cap ? new_size : required_cap)) {
return 1;
}
}
stack->size += size;
return 0;
}
int main( int argc, char** argv ) {
screen s;
struct matrix *edges;
struct stack *transform;
edges = new_matrix(4, 4);
transform = new_stack();
if ( argc == 2 )
parse_file( argv[1], transform, edges, s );
else
parse_file( "stdin", transform, edges, s );
free_stack( transform );
free_matrix( edges );
}
Stack *Make_Stack(int kind, int width, int height, int depth)
{ Stack *stack;
if (Warnings)
{ Warnings = 0;
TIFFSetWarningHandler(NULL);
}
stack = new_stack(depth*height*width*kind,"Make_Stack");
stack->width = width;
stack->height = height;
stack->depth = depth;
stack->kind = kind;
return (stack);
}
Stack * dijkstra(List_adj * la,int source,int target,enum dijkstra_mode mode){
Stack * stack = new_stack();
int i,current;
Cell * tmp_list;
int link_value[3][3]= {{1,1},{1,100},{1,3}};
int tmp;
dijkstra_t * dij = new_dijkstra_s(la->size);
if(mode>3 || mode<0)mode=0;
if(source>la->size || source<0)return NULL;
if(target>la->size || target<0)return NULL;
if(la==NULL)return NULL;
for (i=0;i<dij->size;i++){
dij->visited[i] = white;
dij->parent[i] = -2;
dij->distance[i] = 1000000;
}
dij->distance[source] = 0;
dij->parent[source] = -1;
/*printf("dij->size %d\n",dij->size);*/
current = min_distance(dij);
while(current!=-1) {
dij->visited[current] = black;
tmp_list = la->list[current];
while (tmp_list != NULL){
/*printf("a visiter current=%d,target=%d\n",current,tmp_list->target);*/
if ( dij->visited[tmp_list->target] == white){
if (dij->distance[tmp_list->target] > dij->distance[current] + link_value[mode][tmp_list->linkvalue]){
dij->distance[tmp_list->target] = dij->distance[current] + link_value[mode][tmp_list->linkvalue];
dij->parent[tmp_list->target] = current;
}
}
tmp_list = tmp_list->next;
}
current = min_distance(dij);
}
tmp=target;
while(dij->parent[tmp] != -1){
push(stack,tmp);
tmp=dij->parent[tmp];
}
push(stack,source);
return stack;
}
int main() {
STACK *init = new_stack();
STACK **stack = &init;
push(stack, 3);
push(stack, 2);
push(stack, 1);
int one = pop(stack);
printf("one: %d\n", one);
int two = pop(stack);
printf("two: %d\n", two);
int three = pop(stack);
printf("three: %d\n", three);
//int hmm = pop(stack);
push(stack, 5);
printf("peek: %d", peek(stack));
free(init);
return 0;
}
// Tasks
rust_task::rust_task(rust_sched_loop *sched_loop, rust_task_state state,
rust_task *spawner, const char *name,
size_t init_stack_sz) :
ref_count(1),
id(0),
notify_enabled(false),
stk(NULL),
runtime_sp(0),
sched(sched_loop->sched),
sched_loop(sched_loop),
kernel(sched_loop->kernel),
name(name),
list_index(-1),
rendezvous_ptr(0),
local_region(&sched_loop->local_region),
boxed(sched_loop->kernel->env, &local_region),
unwinding(false),
propagate_failure(true),
cc_counter(0),
total_stack_sz(0),
task_local_data(NULL),
task_local_data_cleanup(NULL),
state(state),
cond(NULL),
cond_name("none"),
event_reject(false),
event(NULL),
killed(false),
reentered_rust_stack(false),
disallow_kill(0),
c_stack(NULL),
next_c_sp(0),
next_rust_sp(0),
supervisor(spawner)
{
LOGPTR(sched_loop, "new task", (uintptr_t)this);
DLOG(sched_loop, task, "sizeof(task) = %d (0x%x)",
sizeof *this, sizeof *this);
new_stack(init_stack_sz);
if (supervisor) {
supervisor->ref();
}
}
int main(int argc, char* argv[])
{
Stack my_stack;
my_stack.push(5);
my_stack.push(10);
my_stack.push(20);
// my_stack.view_stack();
Stack new_stack(my_stack);
new_stack.view_stack();
std::cout << "Here is the top of the stack " << new_stack.top() << std::endl;
std::cout << new_stack.get_size() << std::endl;
std::cout << "popping top of stack..." << std::endl << std::endl;
new_stack.pop();
new_stack.pop();
new_stack.pop();
new_stack.view_stack();
std::cout << "Size of the stack is " << new_stack.get_size() << std::endl;
/*Doubly_Linked_List my_list;
my_list.insert_at_head(5);
my_list.insert_at_head(10);
my_list.insert_at_head(20);
my_list.print_list_head();
my_list.remove_at_head();
std::cout << std::endl;
my_list.print_list_head();*/
return 0;
}