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authorTucker Evans <tuckerevans24@gmail.com>2019-02-18 07:35:54 -0500
committerTucker Evans <tuckerevans24@gmail.com>2019-02-18 07:35:54 -0500
commite8b1808eaf87a49e4c34ebbfb66854baa627418c (patch)
tree8a4bb15321992702b6b26e34bd2ed3a55bb7b0d9 /jobScheduler
parent6cc5652a8af3361288393718ec2adb2889c9af1e (diff)
Moves assignments to given course folder.
Diffstat (limited to 'jobScheduler')
-rw-r--r--jobScheduler/cpuScheduleTable.c224
1 files changed, 0 insertions, 224 deletions
diff --git a/jobScheduler/cpuScheduleTable.c b/jobScheduler/cpuScheduleTable.c
deleted file mode 100644
index 5d2256a..0000000
--- a/jobScheduler/cpuScheduleTable.c
+++ /dev/null
@@ -1,224 +0,0 @@
-#include <stdio.h>
-#include <stdlib.h>
-#include <string.h>
-#include <sys/types.h>
-#include <unistd.h>
-#include <signal.h>
-#include <sys/time.h>
-
-#define PROCESS_COUNT 4
-#define time_calc(x, y) ((y.tv_sec - x.tv_sec) * 1000000) + (y.tv_usec - x.tv_usec)
-
-
-/* TODO
-add heap for priority
-compute priority
-*/
-
-int go=1;
-int turn=0;
-float v;
-float throughput;
-struct timeval start_time;
-int turns;
-int completed_jobs;
-
-struct process {
- int virgin;
- int (*proc)(int);
- int turnaround[9];
- struct timeval start_t;
- int runs;
- float save;
- int turn;
-};
-
-struct process pt[PROCESS_COUNT]; /*process table*/
-
-void
-cpusched(signum)
-int signum;
-{
- pt[turn].virgin=0;
- pt[turn].save=v;
- go=0;
-}
-
-int
-f0(x)
-int x;
-{
- register int i=0;
- register int t;
- signal(SIGUSR1, cpusched);
- if (!x) goto start;
- v=0.0;
-
-start:
- while (go && (v > -200.0)) {
- printf("0");fflush(stdout);
- t = (rand() % 1024);
- v -= 2.0;
- if ((v>0.0) || ((((int) v) % 2) == -1)) {
- printf("f0, found odd or positive, v= %f\n", v);
- exit(1);
- }
- usleep(t*100);
- }
- if (v <= -200.0) pt[0].virgin=1;
- go=1;
-}
-
-int
-f1(x)
-int x;
-{
- register int i=0;
- register int t;
- if (!x) goto start2;
- v= -1.0;
-
-start2:
- while (go && (v > -401.0)) {
- printf("1");fflush(stdout);
- t = (rand() % 2048);
- v -= 2.0;
- if ((v>0.0) || ((((int) v) % 2) != -1)) {
- printf("f1, found even or positive\n");
- exit(1);
- }
- usleep(t*100);
- }
- if (v <= -401.0) pt[1].virgin=1;
- go=1;
-}
-
-int
-f2(x)
-int x;
-{
- register int i=0;
- register int t;
- if (!x) goto start3;
- v= 1.0;
-
-start3:
- while (go) {
- printf("2");fflush(stdout);
- t = (rand() % 4096);
- v += 2.0;
- if ((v<0.0) || ((((int) v) % 2) != 1)) {
- printf("f2, found even or negative\n");
- exit(1);
- }
- usleep(t*100);
- }
- go=1;
-}
-
-int
-f3(x)
-int x;
-{
- register int i=0;
- register int t;
- if (!x) goto start4;
- v= 0.0;
-
-start4:
- while (go) {
- printf("3");fflush(stdout);
- t = (rand() % 4096);
- v += 2.0;
- if ((v<0.0) || ((((int) v) % 2) == 1)) {
- printf("f3, found odd or negative\n");
- exit(1);
- }
- usleep(t*100);
- }
- go=1;
-}
-
-void turnaround_calc(p, n)
-struct process *p;
-int n;
-{
- int i;
- p->turnaround[8] = 0;
- for (i = 0; i < n; i++) {
- p->turnaround[8] += p->turnaround[i] / n;
- }
- return;
-}
-
-int main(argc, argv, envp)
-int argc;
-char **argv, **envp;
-{
- int pid, i, last;
- struct timeval end_t;
- gettimeofday(&start_time, NULL);
-
- for (i = 0; i < PROCESS_COUNT; i++) {
- pt[i].virgin = 1;
- }
-
- pt[0].proc=f0;
- pt[1].proc=f1;
- pt[2].proc=f2;
- pt[3].proc=f3;
-
- signal(SIGUSR1, cpusched);
- if (pid=fork()) {
- while (1) {
- go = 1;
- sleep(5);
- if (go)
- kill(pid, SIGUSR1);
- }
- } else {
- while (1) {
- printf("turn= %d\n", ++turns);
- v=pt[turn].save;
- if (pt[turn].virgin)
- gettimeofday(&pt[turn].start_t, NULL);
-
- pt[turn].proc(pt[turn].virgin);
-
- gettimeofday(&end_t, NULL);
-
- if (pt[turn].virgin) {
- pt[turn].turnaround[pt[turn].runs % 8] = time_calc(pt[turn].start_t, end_t);
- turnaround_calc(&pt[turn], (pt[turn].runs < 8 ? pt[turn].runs + 1 : 8));
- pt[turn].runs++;
- completed_jobs++;
- kill(getppid(), SIGUSR1);
- } else if (pt[turn].runs == 0){
- pt[turn].turnaround[8] = (time_calc(pt[turn].start_t, end_t)) / 2;
- }
-
- throughput = completed_jobs / (float)(end_t.tv_sec - start_time.tv_sec);
- pt[turn].turn++;
-
- if (turns == 1000) {
- kill(getppid(), 9);
- exit(1);
- }
-
- printf("\n");
-
- for (i = 0; i < 4; i++){
- printf("\t[%d]\tturnaround= %9d\truns= %3d\tturn= %d\n", i, pt[i].turnaround[8], pt[i].runs, pt[i].turn);
- }
-
- printf("\ntime= %5d\tthroughput= %9f\tcompleted_jobs= %d\n\n\n", end_t.tv_sec - start_time.tv_sec, throughput, completed_jobs);
-
- last = turn;
- turn = 0;
- for (i = 1; i < PROCESS_COUNT; i++) {
- turn = ((pt[turn].turnaround[8] < pt[i].turnaround[8]) && (turn != last)) ? turn : i;
- }
-
- }
- }
-}