/*
 * libprof -- intercept calls to libc and report profiling information
 *
 *   Copyright (C) 2004 David Collier-Brown, Data Center Works
 *   Generated by mkinterposer from a template copyright (C) 2004  
 *	David Collier-Brown
 *
 *   This program is free software; you can redistribute it and/or modify
 *   it under the terms of the GNU General Public License as published by
 *   the Free Software Foundation; either version 2 of the License, or
 *   (at your option) any later version.
 *   
 *   This program is distributed in the hope that it will be useful,
 *   but WITHOUT ANY WARRANTY; without even the implied warranty of
 *   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 *   GNU General Public License for more details.
 *   
 *   You should have received a copy of the GNU General Public License
 *   along with this program; if not, write to the Free Software
 *   Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
 */

#ifndef LIBPROF_H

/* Includes for interposer. */
#include <dlfcn.h>	/* For dlopen(). */
#include <link.h>
#include <assert.h>	/* For assert() macro. */
#include <signal.h>	/* For sigaction(). */
#include <sys/time.h>

#ifdef __sun
#include <procfs.h>	/* For process name. */
#endif /* __sun */

#ifdef __sun
extern int gettimeofday(struct timeval *, void *);
#endif
#ifdef __linux
extern int gettimeofday(struct timeval *, __timezone_ptr_t);
#define MAXLINE 1024
#define RTLD_NEXT ((void *) -1l)
#endif

/* Profile data, by interface */
struct prof_t {
	char *name; /* Function name as a string */
	long calls; /* Number of call made to it. */
	double time;/* Duration of all the calls. */
	long errs;  /* Reserved for possible future use. */
};

/*
 * Time Macros -- declare, collect and record times.
 */

/* 
 * DECLARE_TIME 
 */
#define DECLARE_TIME struct timeval t0, t1

/*
 * COLLECT_TIME
 */
#define COLLECT_TZERO (void) gettimeofday(&t0, NULL)

/* 
 * RECORD -- record the time taken in the function, in seconds.
 */
#define RECORD(i) \
	(void) gettimeofday(&t1, NULL); \
	ProfStats[i].time += (double) ((t1.tv_sec - t0.tv_sec) +\
			((t1.tv_usec - t0.tv_usec)/1000000.0)); \
	ProfStats[i].calls++

#endif /* LIBPROF_H */