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	A rudimentary tool on top of the igt_stats library. Reads a list of numbers from stdin or from a file and prints the estimate of the central location, aka average. Signed-off-by: Chris Wilson <chris@chris-wilson.co.uk>
		
			
				
	
	
		
			106 lines
		
	
	
		
			2.5 KiB
		
	
	
	
		
			C
		
	
	
	
	
	
			
		
		
	
	
			106 lines
		
	
	
		
			2.5 KiB
		
	
	
	
		
			C
		
	
	
	
	
	
/*
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 * Copyright © 2015 Intel Corporation
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 *
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 * Permission is hereby granted, free of charge, to any person obtaining a
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 * copy of this software and associated documentation files (the "Software"),
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 * to deal in the Software without restriction, including without limitation
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 * the rights to use, copy, modify, merge, publish, distribute, sublicense,
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 * and/or sell copies of the Software, and to permit persons to whom the
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 * Software is furnished to do so, subject to the following conditions:
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 *
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 * The above copyright notice and this permission notice (including the next
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 * paragraph) shall be included in all copies or substantial portions of the
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 * Software.
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 *
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 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
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 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
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 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.  IN NO EVENT SHALL
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 * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
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 * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
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 * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS
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 * IN THE SOFTWARE.
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 *
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 */
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/* Simple tool to print statistics on incoming line buffers intervals */
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#define _ISOC99_SOURCE
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#include <stdlib.h>
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#include <stdio.h>
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#include <stdint.h>
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#include <string.h>
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#include <errno.h>
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#include <unistd.h>
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#include "igt_stats.h"
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static void statify(FILE *file, const char *name)
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{
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	igt_stats_t stats;
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	char *line = NULL;
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	size_t line_len = 0;
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	igt_stats_init(&stats);
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	while (getline(&line, &line_len, file) != -1) {
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		char *end, *start = line;
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		union {
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			unsigned long long u64;
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			double fp;
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		} u;
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		int is_float;
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		is_float = 0;
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		u.u64 = strtoull(start, &end, 0);
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		if (*end == '.') {
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			u.fp = strtod(start, &end);
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			is_float = 1;
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		}
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		while (start != end) {
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			if (is_float)
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				igt_stats_push_float(&stats, u.fp);
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			else
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				igt_stats_push(&stats, u.u64);
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			is_float = 0;
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			u.u64 = strtoull(start = end, &end, 0);
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			if (*end == '.') {
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				u.fp = strtod(start, &end);
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				is_float = 1;
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			}
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		}
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	}
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	free(line);
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	if (name)
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		printf("%s: ", name);
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	printf("%f\n", igt_stats_get_trimean(&stats));
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	igt_stats_fini(&stats);
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}
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int main(int argc, char **argv)
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{
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	if (argc == 1) {
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		statify(stdin, NULL);
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	} else {
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		int i;
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		for (i = 1; i < argc; i++) {
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			FILE *file;
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			file = fopen(argv[i], "r");
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			if (file == NULL) {
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				perror(argv[i]);
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				continue;
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			}
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			statify(file, argv[i]);
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			fclose(file);
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		}
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	}
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	return 0;
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}
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