39 lines
825 B
C
39 lines
825 B
C
#include <stdio.h>
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#include <stdlib.h>
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#include <i86.h>
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struct list_entry {
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struct list_entry *next;
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int data;
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};
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volatile struct list_entry *ListHead = NULL;
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volatile struct list_entry *ListTail = NULL;
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void insert( struct list_entry *new_entry )
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{
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/* insert new_entry at end of linked list */
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new_entry->next = NULL;
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_disable(); /* disable interrupts */
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if( ListTail == NULL ) {
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ListHead = new_entry;
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} else {
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ListTail->next = new_entry;
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}
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ListTail = new_entry;
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_enable(); /* enable interrupts now */
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}
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void main()
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{
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struct list_entry *p;
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int i;
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for( i = 1; i <= 10; i++ ) {
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p = (struct list_entry *)
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malloc( sizeof( struct list_entry ) );
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if( p == NULL ) break;
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p->data = i;
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insert( p );
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}
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}
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