PANDOS_TYPES¶

This header file contains utility types definitions.

Typedefs

typedef signed int cpu_t¶

typedef unsigned int memaddr¶: Represents a memory address.

typedef struct pteEntry_t pteEntry_t¶

typedef struct context_t context_t¶

typedef struct support_t support_t¶

typedef struct pcb_t pcb_t¶

typedef struct pcb_t *pcb_PTR¶

typedef unsigned int size_t¶: Represents a size.

int bool: Represents a boolean value.

typedef int semaphore¶: Represents a semaphore.

typedef struct swap_t swap_t¶

struct pteEntry_t

Public Members

unsigned int pte_entryHI¶

unsigned int pte_entryLO¶

struct context_t

Public Members

unsigned int c_stackPtr¶

unsigned int c_status¶

unsigned int c_pc¶

struct support_t

Public Members

int sup_asid¶: Process ID.

state_t sup_exceptState[2]¶: Old state exceptions.

context_t sup_exceptContext[2]¶: New contexts for passing up.

pteEntry_t sup_privatePgTbl[USERPGTBLSIZE]¶: User page table.

int sup_stackTLB[500]¶

int sup_stackGen[500]¶

struct pcb_t

#include <pandos_types.h>

Process Control Block.

Remark: When inside a queue, by convention p_next points to the PCB that will exit the queue before it, while p_prev points to the PCB that will exit the queue after it.

Public Members

struct pcb_t *p_next¶: Pointer to next entry.

struct pcb_t *p_prev¶: Pointer to previous entry.

struct pcb_t *p_prnt¶: Pointer to parent.

struct pcb_t *p_child¶: Pointer to 1st child.

struct pcb_t *p_next_sib¶: Pointer to next sibling.

struct pcb_t *p_prev_sib¶: Pointer to previous sibling.

state_t p_s¶: Processor state.

cpu_t p_time¶: Cpu time used by process.

int *p_semAdd¶: Pointer to semaphore on which process is blocked.

support_t *p_supportStruct¶: Support structure.

struct swap_t

Public Members

int sw_asid¶: ASID number.

int sw_pageNo¶: Page’s virtual page number.

pteEntry_t *sw_pte¶: Page’s PTE entry.