1 files changed, 42 insertions, 0 deletions
diff --git a/src/standalone/upg5/pagedir.h b/src/standalone/upg5/pagedir.h
new file mode 100644
index 0000000..2919d1a
--- /dev/null
+++ b/src/standalone/upg5/pagedir.h
@@ -0,0 +1,42 @@
+#ifndef PAGEDIR_H
+#define PAGEDIR_H
+
+typedef int bool;
+#define false 0
+#define true 1
+
+/* Returns true iff 'adr' contains a null-character ('\0'). */
+bool is_end_of_string(char* adr);
+
+/* Returns the start address of the page that contains 'adr'. */
+void* pg_round_down(const void* adr);
+
+/* Returns the page number of the page that contains 'adr'.
+ * Page numbers are counted with start at zero (0).
+ */
+unsigned pg_no(const void* adr);
+
+/* Uses the page table to translate from logic to physical
+ * address. Returns NULL if the translation fail.
+ *
+ * The first parameter specify the top level page table to
+ * use. Normally you will find it in the structure corresponding
+ * to your operating systems PCB (Process Control Block).
+ */
+void *pagedir_get_page (void *pagetable, const void *adr);
+
+/* Page size: The number of bytes in each page. */
+#define PGSIZE 100
+
+/* Functions used to simulate a paging system and testing your
+ * solution. */
+void start_evaluate_algorithm(void* start, int size);
+void evaluate(bool result);
+void end_evaluate_algorithm();
+
+/* Let us decide how costly a simulated page fault is in terms of
+ * time. Does not exist in Pintos. Set to zero (0) for faster
+ * testing. */
+void simulator_set_pagefault_time(unsigned i);
+
+#endif