diff options
Diffstat (limited to 'mpx.h')
| -rw-r--r-- | mpx.h | 49 |
1 files changed, 48 insertions, 1 deletions
@@ -31,6 +31,36 @@ struct dirstruct { /* Data type for a directory entry. */ typedef struct dirstruct dir; /* Use dir as the data typer name. */
+/**
+ * PCB
+ */
+
+#define FREE 0
+#define SYS_PROCESS 1
+#define APP_PROCESS 2
+#define READY 0
+#define RUNNING 1
+#define BLOCKED 2
+#define NOT_SUSPENDED 0
+#define SUSPENDED 1
+
+
+struct pcbstruct {
+ struct pcbstruct * chain;
+ struct pcbstruct * next;
+ struct pcbstruct * prev;
+ char name[9];
+ short type;
+ short priority;
+ short state;
+ short suspend;
+ unsigned stack_ptr;
+ unsigned stack[400];
+ unsigned loadaddr;
+ int mem_size;
+};
+typedef struct pcbstruct pcb;
+
/* Function prototypes. */
/* main.c */
@@ -42,14 +72,28 @@ int get_cmd(char args[]); void cmd_version(void);
void cmd_date(char *[]);
void cmd_directory(void);
-void cmd_stop(void);
+int cmd_stop(void);
void cmd_help(char *[]);
void cmd_prompt(char *[]);
void cmd_alias(char *[]);
+void cmd_show(char *[]);
+void cmd_allocate(char *[]);
+void cmd_free(char *[]);
void sys_req(int,int,char *,int *); /* MPX system request function. */
int directory(dir *, int); /* Support function to load the */
/* directory array. */
+/**
+ * PCB.C
+ */
+pcb * search_pcb(pcb *, char[]);
+pcb * get_pcb(pcb *);
+int free_pcb(pcb *, pcb *);
+int build_pcb(pcb *, char[], int, int, int, int);
+int insert_pcb(pcb**, pcb *, int);
+int remove_pcb(pcb**, pcb *);
+
+
/*
* Global variable EXTERN directives.
*
@@ -62,3 +106,6 @@ int directory(dir *, int); /* Support function to load the */ extern dir direct[]; /* Array of directory entries - see direct.c */
extern int directory(dir *direct, int dir_size);
+extern pcb * pcb_list;
+extern pcb * ready_queue;
+extern pcb * io_init_queue;
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