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Mon 14 Oct 23:09:15 CEST 2024

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sbosse 2024-10-14 23:10:04 +02:00
parent 7827edcba9
commit dcc2d7b3d0
1 changed files with 62 additions and 0 deletions
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user/procstat.c Normal file
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/*
Copyright (C) 2016-2019 The University of Notre Dame
This software is distributed under the GNU General Public License.
See the file LICENSE for details.
*/
#include "library/syscalls.h"
#include "kernel/syscall.h"
#include "kernel/stats.h"
#include "library/string.h"
#include "library/errno.h"
int main(int argc, const char *argv[])
{
if (argc <= 1) {
printf("No program to run\n");
return 1;
}
unsigned int startTime;
syscall_system_time(&startTime);
int pid;
int fd = syscall_open_file(KNO_STDDIR,argv[1],0,0);
if(fd>=0) {
pid = syscall_process_fork();
if (pid == 0) { // child
syscall_process_exec(fd, argc-1, &argv[1]);
printf("exec failed\n");
return 1;
} else if (pid < 0) {
printf("fork failed\n");
return -1;
}
} else {
printf("couldn't find %s: %s\n",argv[1],strerror(fd));
return 1;
}
/* parent */
struct process_info info;
syscall_process_wait(&info, -1);
unsigned int timeElapsed;
syscall_system_time(&timeElapsed);
timeElapsed -= startTime;
struct process_stats stat;
syscall_process_stats(&stat, pid);
printf("Process %u exited with status %d\n", info.pid, info.exitcode);
printf("Time elapsed: %d:%d:%d\n", timeElapsed/3600, (timeElapsed%3600)/60, timeElapsed % 60);
printf("%d blocks read, %d blocks written\n", stat.blocks_read, stat.blocks_written);
printf("%d bytes read, %d bytes written\n", stat.bytes_read, stat.bytes_written);
printf("System calls used:\n");
for (int i = 0; i < MAX_SYSCALL; i++) {
if (stat.syscall_count[i]) {
printf("Syscall %d: %u\n", i, stat.syscall_count[i]);
}
}
return 0;
}