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Move all host examples under host/

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Toby Jaffey 2025-12-11 12:57:59 +00:00
parent 1213c5673f
commit 7353810199
16 changed files with 104 additions and 143 deletions
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70
hosts/host-parallel/host-parallel.c Normal file
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#include <stdio.h>
#include <string.h>
#include <stdlib.h>
#include "uvm32.h"
#include "../common/uvm32_common_custom.h"
// Run multiple scheduled VMs in parallel until all have ended
#define NUM_VM 4 // number of vms
#define SCHEDULE SCHEDULE_RANDOM // scheduling algorithm
// scheduling algorithms
#define SCHEDULE_ROUNDROBIN() scheduler_index = (scheduler_index + 1) % NUM_VM
#define SCHEDULE_RANDOM() scheduler_index = rand()%NUM_VM
#include "fib.h"
int main(int argc, char *argv[]) {
uvm32_state_t vmst[NUM_VM];
uvm32_evt_t evt;
int numVmRunning = NUM_VM;
int scheduler_index = 0;
for (int i=0;i<NUM_VM;i++) {
uvm32_init(&vmst[i]);
uvm32_load(&vmst[i], fib, fib_len);
}
while(numVmRunning > 0) {
if (uvm32_hasEnded(&vmst[scheduler_index])) {
// this vm has already completed, pick another
SCHEDULE();
continue;
}
uvm32_run(&vmst[scheduler_index], &evt, 100); // num instructions before vm considered hung
switch(evt.typ) {
case UVM32_EVT_END:
printf("[VM %d ended]\n", scheduler_index);
numVmRunning--;
break;
case UVM32_EVT_SYSCALL: // vm has paused to handle UVM32_SYSCALL
switch(evt.data.syscall.code) {
case UVM32_SYSCALL_YIELD:
break;
case UVM32_SYSCALL_PRINTLN: {
const char *str = uvm32_getcstr(&vmst[scheduler_index], &evt, ARG0);
if (str[0] != 0) {
printf("[VM %d] %s\n", scheduler_index, str);
}
} break;
case UVM32_SYSCALL_PRINTDEC:
printf("[VM %d] %d\n", scheduler_index, uvm32_getval(&vmst[scheduler_index], &evt, ARG0));
break;
default:
printf("Unhandled syscall 0x%08x\n", evt.data.syscall.code);
break;
}
break;
case UVM32_EVT_ERR:
printf("UVM32_EVT_ERR '%s' (%d)\n", evt.data.err.errstr, (int)evt.data.err.errcode);
break;
default:
break;
}
SCHEDULE();
}
return 0;
}