process.h File Reference

Header file for the Contiki process interface.

Author

Adam Dunkels adam@.nosp@m.sics.nosp@m..se

#include "sys/pt.h"
#include "sys/cc.h"

Data Structures
struct	process

Macros
#define	PROCESS_BROADCAST   NULL
#define	PROCESS_CONF_NUMEVENTS   32
#define	PROCESS_EVENT_COM   0x89
#define	PROCESS_EVENT_CONTINUE   0x85
#define	PROCESS_EVENT_EXIT   0x83
#define	PROCESS_EVENT_EXITED   0x87
#define	PROCESS_EVENT_INIT   0x81
#define	PROCESS_EVENT_MAX   0x8a
#define	PROCESS_EVENT_MSG   0x86
#define	PROCESS_EVENT_NONE   0x80
#define	PROCESS_EVENT_POLL   0x82
#define	PROCESS_EVENT_SERVICE_REMOVED   0x84
#define	PROCESS_EVENT_TIMER   0x88
#define	PROCESS_LIST()   process_list
#define	PROCESS_NAME_STRING(process)   (process)->name
#define	PROCESS_NONE   NULL
#define	PROCESS_ZOMBIE   ((struct process *)0x1)
Return values
#define	PROCESS_ERR_OK   0
	Return value indicating that an operation was successful. More...
#define	PROCESS_ERR_FULL   1
	Return value indicating that the event queue was full. More...
Process protothread functions
#define	PROCESS_BEGIN()
	Define the beginning of a process. More...
#define	PROCESS_END()
	Define the end of a process. More...
#define	PROCESS_WAIT_EVENT()
	Wait for an event to be posted to the process. More...
#define	PROCESS_WAIT_EVENT_UNTIL(c)
	Wait for an event to be posted to the process, with an extra condition. More...
#define	PROCESS_YIELD()
	Yield the currently running process. More...
#define	PROCESS_YIELD_UNTIL(c)
	Yield the currently running process until a condition occurs. More...
#define	PROCESS_WAIT_UNTIL(c)
	Wait for a condition to occur. More...
#define	PROCESS_WAIT_WHILE(c)   PT_WAIT_WHILE(process_pt, c)
#define	PROCESS_EXIT()
	Exit the currently running process. More...
#define	PROCESS_PT_SPAWN(pt, thread)
	Spawn a protothread from the process. More...
#define	PROCESS_PAUSE()
	Yield the process for a short while. More...
Poll and exit handlers
#define	PROCESS_POLLHANDLER(handler)
	Specify an action when a process is polled. More...
#define	PROCESS_EXITHANDLER(handler)
	Specify an action when a process exits. More...
Process declaration and definition
#define	PROCESS_THREAD(name, ev, data)
	Define the body of a process. More...
#define	PROCESS_NAME(name)
	Declare the name of a process. More...
#define	PROCESS(name, strname)
	Declare a process. More...

Typedefs
typedef void *	process_data_t
typedef unsigned char	process_event_t
typedef unsigned char	process_num_events_t

Functions
Functions called from device drivers
void	process_poll (struct process *p)
	Request a process to be polled. More...
Functions called by the system and boot-up code
void	process_init (void)
	Initialize the process module. More...
int	process_run (void)
	Run the system once - call poll handlers and process one event. More...
int	process_is_running (struct process *p)
	Check if a process is running. More...
int	process_nevents (void)
	Number of events waiting to be processed. More...

Variables
CCIF struct process *	process_list

Functions called from application programs
#define	PROCESS_CURRENT()
	Get a pointer to the currently running process. More...
#define	PROCESS_CONTEXT_BEGIN(p)
	Switch context to another process. More...
#define	PROCESS_CONTEXT_END(p)   process_current = tmp_current; }
	End a context switch. More...
CCIF struct process *	process_current
void	process_start (struct process *p, const char *arg)
	Start a process. More...
int	process_post (struct process *p, process_event_t ev, void *data)
	Post an asynchronous event. More...
void	process_post_synch (struct process *p, process_event_t ev, void *data)
	Post a synchronous event to a process. More...
void	process_exit (struct process *p)
	Cause a process to exit. More...
process_event_t	process_alloc_event (void)
	Allocate a global event number. More...

#define PROCESS_NAME_STRING

(

process

)

(process)->name

Referenced by call_process(), exit_process(), make_processes(), process_post(), and process_start().