Possible memory leak valgrind c - c

Question

I have just started using valgrind and am not very good with pointers so what I essentially want to do is pass the snake_thread s[1] variable as reference to all the functions so that I don't have to free the memory in each of the functions individually.
==20== HEAP SUMMARY:
==20== in use at exit: 17,704 bytes in 65 blocks
==20== total heap usage: 75 allocs, 10 frees, 32,646 bytes allocated
==20==
==20== 56 bytes in 1 blocks are still reachable in loss record 1 of 8
==20== at 0x483DD99: calloc (in /usr/lib/x86_64-linux-gnu/valgrind/vgpreload_memcheck-amd64-linux.so)
==20== by 0x10A068: initialize (snake_map_test.c:249)
==20== by 0x1098C1: main (snake_map_test.c:126)
==20==
==20== 56 bytes in 1 blocks are still reachable in loss record 2 of 8
==20== at 0x483DD99: calloc (in /usr/lib/x86_64-linux-gnu/valgrind/vgpreload_memcheck-amd64-linux.so)
==20== by 0x10A089: initialize (snake_map_test.c:250)
==20== by 0x1098C1: main (snake_map_test.c:126)
==20==
==20== 160 bytes in 1 blocks are still reachable in loss record 3 of 8
==20== at 0x483DD99: calloc (in /usr/lib/x86_64-linux-gnu/valgrind/vgpreload_memcheck-amd64-linux.so)
==20== by 0x10B992: Read_args (snake_map_test.c:571)
==20== by 0x109887: main (snake_map_test.c:122)
==20==
==20== 272 bytes in 1 blocks are possibly lost in loss record 4 of 8
==20== at 0x483DD99: calloc (in /usr/lib/x86_64-linux-gnu/valgrind/vgpreload_memcheck-amd64-linux.so)
==20== by 0x40149CA: allocate_dtv (dl-tls.c:286)
==20== by 0x40149CA: _dl_allocate_tls (dl-tls.c:532)
==20== by 0x485C322: allocate_stack (allocatestack.c:622)
==20== by 0x485C322: pthread_create##GLIBC_2.2.5 (pthread_create.c:660)
==20== by 0x10972E: main (snake_map_test.c:111)
==20==
==20== 272 bytes in 1 blocks are possibly lost in loss record 5 of 8
==20== at 0x483DD99: calloc (in /usr/lib/x86_64-linux-gnu/valgrind/vgpreload_memcheck-amd64-linux.so)
==20== by 0x40149CA: allocate_dtv (dl-tls.c:286)
==20== by 0x40149CA: _dl_allocate_tls (dl-tls.c:532)
==20== by 0x485C322: allocate_stack (allocatestack.c:622)
==20== by 0x485C322: pthread_create##GLIBC_2.2.5 (pthread_create.c:660)
==20== by 0x1098F8: main (snake_map_test.c:130)
==20==
==20== 400 bytes in 20 blocks are still reachable in loss record 6 of 8
==20== at 0x483DD99: calloc (in /usr/lib/x86_64-linux-gnu/valgrind/vgpreload_memcheck-amd64-linux.so)
==20== by 0x10BA1C: Read_args (snake_map_test.c:575)
==20== by 0x109887: main (snake_map_test.c:122)
==20==
==20== 5,880 bytes in 1 blocks are still reachable in loss record 7 of 8
==20== at 0x483DD99: calloc (in /usr/lib/x86_64-linux-gnu/valgrind/vgpreload_memcheck-amd64-linux.so)
==20== by 0x10A048: initialize (snake_map_test.c:248)
==20== by 0x1098C1: main (snake_map_test.c:126)
==20==
==20== 10,608 bytes in 39 blocks are possibly lost in loss record 8 of 8
==20== at 0x483DD99: calloc (in /usr/lib/x86_64-linux-gnu/valgrind/vgpreload_memcheck-amd64-linux.so)
==20== by 0x40149CA: allocate_dtv (dl-tls.c:286)
==20== by 0x40149CA: _dl_allocate_tls (dl-tls.c:532)
==20== by 0x485C322: allocate_stack (allocatestack.c:622)
==20== by 0x485C322: pthread_create##GLIBC_2.2.5 (pthread_create.c:660)
==20== by 0x109DD4: run_snake_threads (snake_map_test.c:217)
==20== by 0x485B608: start_thread (pthread_create.c:477)
==20== by 0x4997292: clone (clone.S:95)
==20==
==20== LEAK SUMMARY:
==20== definitely lost: 0 bytes in 0 blocks
==20== indirectly lost: 0 bytes in 0 blocks
==20== possibly lost: 11,152 bytes in 41 blocks
==20== still reachable: 6,552 bytes in 24 blocks
==20== suppressed: 0 bytes in 0 blocks
==20==
==20== Use --track-origins=yes to see where uninitialised values come from
==20== For lists of detected and suppressed errors, rerun with: -s
==20== ERROR SUMMARY: 6 errors from 6 contexts (suppressed: 0 from 0)
These are the relevant functions
void* update(void* arg)
{
snake* s=(snake*)arg;
if (GAMEOVER == false)
{
if (s->dir == LEFT)
s->headX--;
else if (s->dir == RIGHT)
s->headX++;
else if (s->dir == DOWN)
s->headY++;
else if (s->dir == UP)
s->headY--;
}
pthread_exit(0);
}
void* run_snake_threads(void* arg)
{
snake_thread* s = (snake_thread*)arg;
while (GAMEOVER == false)
{
pthread_testcancel(); //cancellation point
map_init(s,s->food);
if(print_flag==1)
print(s->map);
for (int i = 0; i < s->info->size; i++)
{
input(s->snake_list, &s->snake_list[i], s->map, s->info,&s->food[i]);
int err = pthread_create(&(s->pid[i]), NULL, update, (void*)&(s->snake_list[i]));
if (err != 0) ERR("Couldn't create thread");
spawn_food(&s->snake_list[i], s->map,s->food,s->info);
update_tail(&s->snake_list[i]);
set_gameover(&s->snake_list[i], s->map);
usleep(s->snake_list[i].sleep_time);
}
}
free(s->food);
free(s->pid);
free(s->snake_list);
pthread_exit(0);
}
void initialize(snake_thread* s,int argc,char** argv)
{
s->snake_list = calloc(s->info->size,sizeof(snake) );
s->pid = calloc(s->info->size, sizeof(pthread_t) );
s->food=calloc(s->info->size,sizeof(snake_food));
//does some stuff and passes s to other functions
}
void Read_args(int argc, char** argv,snake_thread* s)
{
int c;
if (argc > 1)
while ((c = getopt(argc, argv, "x:y:f:")) != -1)
switch (c)
{
case 'x':
s->info->width_provided = true;
s->map->width = atoi(optarg);
break;
case 'y':
s->info->height_provided = true;
s->map->height = atoi(optarg);
break;
case 'f':
s->info->file_name_provided = true;
strcpy(s->info->file,optarg);
break;
default:
usage(argv[0]);
break;
}
else usage(argv[0]);
if(!(s->info->file))
{
strcpy(s->info->file,getenv("$SNAKEFILE"));
if(!(s->info->file))
{
printf("Warning, No save file provided\n");
}
}
init_size(argc,s->info);
//if(argc>optind) ERR("optind err");
s->map->map_elem_pos = calloc(s->map->height,sizeof(char*));
if (s->map->map_elem_pos == NULL) ERR("Malloc error for elements of map");
for (int i = 0; i < s->map->height; i++)
s->map->map_elem_pos[i] = calloc(s->map->width,sizeof(char));
}
int main(int argc, char** argv)
{
pthread_t pid;
snake_thread s[1]
Read_args(argc, argv, s);
if (access(s->info->file, F_OK) != 0)
initialize(s,argc,argv);
int err = pthread_create(&s->pid2, NULL, run_snake_threads, (void*)s);
if (err) ERR("Couldn't create thread");
pthread_join(s->pid2, NULL);
}