| /* |
| * Copyright (c) International Business Machines Corp., 2001 |
| * |
| * 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., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA |
| */ |
| /* |
| FUNCTIONS: Scheduler Test Suite |
| */ |
| |
| /*---------------------------------------------------------------------+ |
| | sched_tc2 | |
| | ==================================================================== | |
| | | |
| | Description: Creates long-term disk I/O bound process | |
| | | |
| | Algorithm: o Set process priority | |
| | o Open a large file and repeatedly read from it | |
| | for a specified time duration | |
| | | |
| | To compile: cc -o sched_tc2 sched_tc2.c -L. -lpsc | |
| | | |
| | Usage: sched_tc2 [-t sec] [-p priority] [-v] [-d] | |
| | | |
| | Last update: Ver. 1.3, 4/10/94 23:05:01 | |
| | | |
| | Change Activity | |
| | | |
| | Version Date Name Reason | |
| | 0.1 050689 CTU Initial version | |
| | 0.2 010402 Manoj Iyer Ported to Linux | |
| | | |
| +---------------------------------------------------------------------*/ |
| |
| #include <stdlib.h> |
| #include <sys/time.h> |
| #include <sys/resource.h> |
| #include "sched.h" |
| |
| /* |
| * Defines: |
| * |
| * USAGE: usage statement |
| * |
| * DEFAULT_PRIORITY_TYPE: default priority |
| * |
| * DEFAULT_EXECUTION_TIME: default execution time (in seconds) |
| * |
| * DEFAULT_MATRIX_SIZE: default size of matrix |
| * |
| */ |
| #define DEFAULT_PRIORITY_TYPE "variable" |
| #define DEFAULT_EXECUTION_TIME 1800 |
| #define MATRIX_SIZE 100 |
| #define USAGE "Usage: %s [-p priority] [-t sec] [-v] [-d] \n" \ |
| " -t sec execution time (default 1800 sec) \n" \ |
| " -p priority priority (default variable) \n" \ |
| " -v verbose \n" \ |
| " -d enable debugging messages \n" |
| |
| /* |
| * Function prototypes: |
| * |
| * process_file: reads data file |
| * |
| * parse_args: parse command line arguments |
| */ |
| void parse_args (int, char **); |
| void multiply_matrices (); |
| |
| /* |
| * Global variables: |
| * |
| * verbose: enable normal messages |
| * |
| * debug: enable debugging messages |
| * |
| * execution_time: testcase execution time (hours) |
| * |
| * priority: process type (fixed priority, variable priority) |
| */ |
| int verbose = 0; |
| int debug = 0; |
| long execution_time = DEFAULT_EXECUTION_TIME; |
| char *priority = DEFAULT_PRIORITY_TYPE; |
| |
| /*---------------------------------------------------------------------+ |
| | main | |
| | ==================================================================== | |
| | | |
| | Function: ... | |
| | | |
| +---------------------------------------------------------------------*/ |
| int main (int argc, char **argv) |
| { |
| long start_time; /* time at start of testcase */ |
| int i; |
| |
| /* |
| * Process command line arguments... |
| */ |
| if (argc < 2) { |
| fprintf (stderr, USAGE, *argv); |
| exit (0); |
| } |
| |
| parse_args (argc, argv); |
| if (verbose) printf ("%s: Scheduler TestSuite program\n\n", *argv); |
| if (debug) { |
| printf ("\tpriority: %s\n", priority); |
| printf ("\texecution_time: %ld (sec)\n", execution_time); |
| } |
| |
| /* |
| * Adjust the priority of this process if the real time flag is set |
| */ |
| if (!strcmp (priority, "fixed")) { |
| #ifndef __linux__ |
| if (setpri (0, DEFAULT_PRIORITY) < 0) |
| sys_error ("setpri failed", __FILE__, __LINE__); |
| #else |
| if (setpriority(PRIO_PROCESS, 0, 0) < 0) |
| sys_error ("setpri failed", __FILE__, __LINE__); |
| #endif |
| } |
| |
| /* |
| * Continuously multiply matrix as time permits... |
| */ |
| i = 0; |
| start_time = time ((long *) 0); |
| |
| if (debug) printf ("\n"); |
| while ( (time ((long *)0) - start_time) < execution_time) { |
| if (debug) { |
| printf ("\r\tmultiplying matrix [%d], time left: %ld", |
| i++, |
| execution_time - (time ((long *)0)-start_time)); |
| fflush (stdout); |
| } |
| multiply_matrices (); |
| } |
| if (debug) printf ("\n"); |
| |
| /* |
| * Exit with success! |
| */ |
| if (verbose) printf ("\nsuccessful!\n"); |
| return (0); |
| } |
| |
| /*---------------------------------------------------------------------+ |
| | multiply_matricies () | |
| | ==================================================================== | |
| | | |
| | Function: Randomly assigns two matrices values and then multiplies | |
| | them together. | |
| | | |
| +---------------------------------------------------------------------*/ |
| void multiply_matrices () |
| { |
| int i, j, k; /* various indeces to access the arrays */ |
| float matrix_1 [MATRIX_SIZE] [MATRIX_SIZE]; |
| float matrix_2 [MATRIX_SIZE] [MATRIX_SIZE]; |
| float matrix_3 [MATRIX_SIZE] [MATRIX_SIZE]; |
| |
| /* first, fill the two matrices to be multiplied with random values */ |
| |
| for (i=0; i < MATRIX_SIZE; i++) { |
| for (j=0; j < MATRIX_SIZE; j++) { |
| matrix_1 [i][j] = (float) (rand() % 100); |
| matrix_2 [i][j] = (float) (rand() % 100); |
| } |
| } |
| |
| /* |
| * Now multiply the two matrices |
| */ |
| for (i=0; i < MATRIX_SIZE; i++) { |
| for (j=0; j < MATRIX_SIZE; j++) { |
| matrix_3 [i][j] = 0.0; /* clear the element first */ |
| for (k=0; k < MATRIX_SIZE; k++) |
| matrix_3 [i][j] += |
| matrix_1 [i][k] * matrix_2 [k][j]; |
| } |
| } |
| } |
| |
| /*---------------------------------------------------------------------+ |
| | parse_args () | |
| | ==================================================================== | |
| | | |
| | Function: Parse the command line arguments & initialize global | |
| | variables. | |
| | | |
| | Updates: (command line options) | |
| | | |
| | [-p] priority: "fixed" or "variable" | |
| | [-t] n: execution time in hours | |
| | [-v] verbose | |
| | [-d] enable debugging messages | |
| | | |
| +---------------------------------------------------------------------*/ |
| void parse_args (int argc, char **argv) |
| { |
| int opt; |
| int pflg = 0, tflg = 0; |
| int errflag = 0; |
| char *program_name = *argv; |
| extern char *optarg; /* Command line option */ |
| |
| /* |
| * Parse command line options. |
| */ |
| if (argc < 2) { |
| fprintf (stderr, USAGE, program_name); |
| exit (0); |
| } |
| |
| while ((opt = getopt(argc, argv, "p:t:vd")) != EOF) |
| { |
| switch (opt) |
| { |
| case 'p': /* process type */ |
| pflg++; |
| priority = optarg; |
| break; |
| case 't': /* time (hours) */ |
| tflg++; |
| execution_time = atof (optarg); |
| break; |
| case 'v': /* verbose */ |
| verbose++; |
| break; |
| case 'd': /* enable debugging messages */ |
| verbose++; |
| debug++; |
| break; |
| default: |
| errflag++; |
| break; |
| } |
| } |
| |
| /* |
| * Check percentage, execution time and process slots... |
| */ |
| if (pflg) { |
| if (strcmp (priority, "fixed") && strcmp (priority, "variable")) |
| errflag++; |
| } |
| if (tflg) { |
| if (execution_time < 0.0 || execution_time > 360000) |
| errflag++; |
| } |
| if (errflag) { |
| fprintf (stderr, USAGE, program_name); |
| exit (2); |
| } |
| } |