wlan-gnuscript.cc

柯老师网站上找到的

#include <stdio.h>
#include <string.h>
#include <assert.h>

void usage(const char* prog)
{
	fprintf(stderr, "usage:\n");
	fprintf(stderr, "	%s <scenario> <mode = lat | bw | latdist>\n", prog);
}

int main(int argc, char** argv)
{
	const char* scenario = argv[1];
	const char* mode = argv[2];
	const char* label;
	char scratch[20];
	char number[20];
	float max = 0.0, num;
	int flow, ret, ymax;
	int argp = 3, first = 1;

	if (argc < 3) {
		usage(argv[0]);
	}

	printf("load \"%s.title\"\n", scenario);

	if (strcasecmp(mode, "lat") == 0) {
		printf("set xlabel \"time(secs)\"\n");
		printf("set ylabel \"latency(ms)\"\n");
		printf("plot \\\n");
		while (scanf("%d", &flow) != EOF) {
			if (argp < argc) {
				label = argv[argp++];
			} else {
				sprintf(scratch, "Flow_%d", flow);
				label = scratch;
			}
			if (strcasecmp(label, "end") == 0)
				break;
			if (strcasecmp(label, "drop") == 0) {
				ret = scanf("%s%s%s", number, number, number);
				assert(ret != EOF);
				continue;
			}

			if (!first)
				printf(",	\\\n");
			first = 0;

			ret = scanf("%f", &num);
			assert(ret != EOF);
			if (num > max)
				max = num;
			/* read the trailing ms behind the max */
			ret = scanf("%s", number);
			assert(ret != EOF);

			printf("	\"%s.%d.lat\" using 1:($2*1000) title \"%s (", scenario, flow, label);

			ret = scanf("%s", number);
			assert(ret != EOF);
			printf("Mean lat = %8s, ", number);

			ret = scanf("%s", number);
			assert(ret != EOF);
			printf("dev = %8s", number);

			printf(")\" with lines");
		}
	} else if (strcasecmp(mode, "bw") == 0) {
		printf("set xlabel \"time(secs)\"\n");
		printf("set ylabel \"Bandwidth(Mb/s)\"\n");
		printf("plot \\\n");
		while (scanf("%d", &flow) != EOF) {
			if (argp < argc) {
				label = argv[argp++];
			} else {
				sprintf(scratch, "Flow_%d", flow);
				label = scratch;
			}
			if (strcasecmp(label, "end") == 0)
				break;
			if (strcasecmp(label, "drop") == 0) {
				ret = scanf("%s%s%s%s", number, number, number, number);
				assert(ret != EOF);
				continue;
			}

			if (!first)
				printf(",	\\\n");
			first = 0;

			printf("	\"%s.%d.bw\" using 1:($2*8.0/1000000.0) title \"%s (", scenario, flow, label);

			ret = scanf("%s", number);
			assert(ret != EOF);
			printf("IFQ/MAC drops = %s/", number);
			ret = scanf("%s", number);
			assert(ret != EOF);
			printf("%s, ", number);

			ret = scanf("%s", number);
			assert(ret != EOF);
			sscanf(number, "%f", &num);
			printf("Total b/w = %.2fMb/s", (double)num*1024.0*8.0/1000000.0);

			ret = scanf("%s", number);
			assert(ret != EOF);
			sscanf(number, "%f", &num);
			if (num > max)
				max = num;

			printf(")\" with lines");
		}
		max = max*1024.0*8.0/1000000.0;
	} else if (strcasecmp(mode, "latdist") == 0) {
		max = 100.0;
		printf("set xlabel \"Latency(ms)\"\n");
		printf("set ylabel \"cummulative %% of pkts\"\n");
		printf("plot 100.0 notitle with lines 0,	\\\n");
		while (scanf("%d", &flow) != EOF) {
			if (argp < argc) {
				label = argv[argp++];
			} else {
				sprintf(scratch, "Flow_%d", flow);
				label = scratch;
			}
			if (strcasecmp(label, "end") == 0)
				break;
			if (strcasecmp(label, "drop") == 0) {
				continue;
			}

			if (!first)
				printf(",	\\\n");
			first = 0;

			printf("	\"%s.%d.latdist\" using ($1*1000):2 title \"%s\" with lines",
				scenario, flow, label);
		}
	} else {
		usage(argv[0]);
	}
	printf("\n");

	for (ret = 0; max < 100.0; ++ret) max *= 10.0;
	ymax = (int)(max * 1.3);
	ymax = ((ymax + 5) / 10) * 10;
	for (max = ymax; ret--; max = max/10.0);
	printf("set yrange [0:%.9f]\n", max);
	printf("set terminal jpeg\n");
	printf("set output \"%s.%s.jpeg\"\n", scenario, mode);
	printf("replot\n");

	printf("set terminal x11\n");
	printf("set output\n");
	printf("replot\n");
}