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| Rev 275 |
Rev 384 |
/* zz30
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/* zz30
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*
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*
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* demonstrate a splay-tree depth problem
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* demonstrate a splay-tree depth problem
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*/
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*/
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#include <stdlib.h>
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#include <stdlib.h>
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#include <stdio.h>
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#include <stdio.h>
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#include <unistd.h>
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#include <unistd.h>
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#ifndef SCALE
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#ifndef SCALE
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#define SCALE 100000
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#define SCALE 100000
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#endif
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#endif
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struct list
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struct list
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{
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{
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struct list *next;
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struct list *next;
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};
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};
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int
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int
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main ()
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main ()
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{
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{
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struct list *head = NULL;
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struct list *head = NULL;
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struct list *tail = NULL;
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struct list *tail = NULL;
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struct list *p;
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struct list *p;
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long n;
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long n;
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int direction;
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int direction;
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for (direction = 0; direction < 2; direction++)
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for (direction = 0; direction < 2; direction++)
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{
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{
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fprintf (stdout, "allocating\n");
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fprintf (stdout, "allocating\n");
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fflush (stdout);
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fflush (stdout);
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for (n = 0; n < SCALE; ++n)
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for (n = 0; n < SCALE; ++n)
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{
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{
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p = malloc (sizeof *p);
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p = malloc (sizeof *p);
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if (NULL == p)
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if (NULL == p)
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{
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{
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fprintf (stdout, "malloc failed\n");
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fprintf (stdout, "malloc failed\n");
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break;
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break;
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}
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}
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if (direction == 0)
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if (direction == 0)
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{ /* add at tail */
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{ /* add at tail */
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p->next = NULL;
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p->next = NULL;
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if (NULL != tail)
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if (NULL != tail)
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tail->next = p;
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tail->next = p;
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else
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else
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head = p;
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head = p;
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tail = p;
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tail = p;
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}
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}
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else
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else
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{ /* add at head */
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{ /* add at head */
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p->next = head;
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p->next = head;
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if (NULL == tail)
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if (NULL == tail)
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tail = p;
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tail = p;
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head = p;
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head = p;
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}
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}
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}
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}
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fprintf (stdout, "freeing\n");
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fprintf (stdout, "freeing\n");
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fflush (stdout);
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fflush (stdout);
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while (NULL != head)
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while (NULL != head)
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{
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{
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p = head;
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p = head;
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head = head->next;
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head = head->next;
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free (p);
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free (p);
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}
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}
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}
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}
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fprintf (stdout, "done\n");
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fprintf (stdout, "done\n");
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fflush (stdout);
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fflush (stdout);
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return (0);
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return (0);
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}
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}
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/* { dg-output "allocating.*freeing.*allocating.*freeing.*done" } */
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/* { dg-output "allocating.*freeing.*allocating.*freeing.*done" } */
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