libvisao.h File Reference

VisAO software utilitites, declarations. More...

#include "time.h"
#include "sys/time.h"
#include <sys/shm.h>
#include "fifoutils.h"

Go to the source code of this file.

Macros
#define	VISAO_SCHED_POLICY   SCHED_FIFO
	The real-time scheduling policy used by the VisAO system.
#define	PROMPT_UP   1
#define	PROMPT_DOWN   2
#define	PROMPT_INT   3
#define	FTYPE_NORMAL   0
#define	FTYPE_SDI   1
#define	FTYPE_CORON   2
#define	RTSIGTIMEOUT   (RTSIGPING + 1)
#define	SYS_N_CORES   6
	Number of physical processors in the system.
#define	SYS_N_VCORES   12
	Number of virtual processors in the system.
#define	SYS_N_DRV   2
	Number of physical drives in the system.
#define	SYS_N_LOGDRV   6
	Number of logical drives in the system.
#define	set_global_error_report(er)   void (*global_error_report)(const char*, const char*, int) = er
	Macro for declaring and setting the error reporting global.
#define	set_global_log_info(li)   void (*global_log_info)(const char*) = li
	Macro for declaring and setting the info logging global.

Functions
void	fifo_error_message (const char *, const char *, int)
	The fifoutils error reporting function. More...
int	get_dio_fnames (char *fout, char *fin, char *fbase, int ch)
	Fills in the properly formatted dioserver channel fifo names.
double	ts_to_curr_time (struct timespec *tsp)
	Convert a timespec structure to double seconds.
double	tv_to_curr_time (struct timeval *tvp)
	Convert a timeval structure to double seconds.
double	get_curr_time (void)
	Gets the current CLOCK_REALTIME time, returns it in seconds to double precision.
int	create_shmem (int *shmemid, key_t mkey, size_t sz)
	Create a shared memory buffer.
void *	attach_shm (size_t *sz, key_t mkey, int shmemid)
	Attach to a shared memory buffer and get its size.
double	ComputeFramerate (double delay_base, double delay_inc, int rep)
	Calculate frame rate given Little Joe program parameters.
int	ComputeRepsFrameRate (double delay_base, double delay_inc, double fr)
int	ComputeRepsExpTime (double delay_base, double delay_inc, double et)
int	sigproof_sleep (double secs, int *dienow)
	Signal proof sleep function. More...

Variables
void(*	global_error_report )(const char *, const char *, int)
	A global error reporting function, arguments are the report, file, and line. More...
void(*	global_log_info )(const char *)
	A global info logging function. More...

Detailed Description

Author

Jared R. Males

Definition in file libvisao.h.

Function Documentation

void fifo_error_message	(	const char *	,
		const char *	,
		int
	)

This passes the ERRMSG macro in fifoutils out to the global_error_report.

Definition at line 18 of file libvisaoc.c.

int sigproof_sleep	(	double	secs,
		int *	dienow
	)

Sleeps for at least secs seconds, even if interrupted by a handled signal. May sleep for longer if signal handling takes a long time. Monitors the integer pointed by dienow and exits if it becomes 1 set dienow to 0 to ignore.

Definition at line 161 of file libvisaoc.c.

References get_curr_time().

Variable Documentation

void(* global_error_report) (const char *, const char *, int)

This is used by various library functions and classes that aren't derived from one of the Apps.

Referenced by attach_shm(), and create_shmem().

void(* global_log_info) (const char *)

This is used by various library functions and classes that aren't derived from one of the Apps.

Referenced by attach_shm(), and create_shmem().