83 lines
2.1 KiB
C
83 lines
2.1 KiB
C
#include <setjmp.h>
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#define __USE_GNU
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#include <signal.h>
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#include <stdio.h>
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#include <stdlib.h>
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#include <unistd.h>
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#include <sys/select.h>
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#include <sys/stat.h>
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#include <sys/time.h>
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#include <sys/types.h>
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#include "umka.h"
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#include "thread.h"
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#include "shell.h"
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struct itimerval timeout = {.it_value = {.tv_sec = 0, .tv_usec = 10000}};
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void scheduler(int signo, siginfo_t *info, void *context) {
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(void)signo;
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(void)info;
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(void)context;
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// printf("##### switching from task %u\n", kos_current_task);
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ucontext_t *ctx = context;
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if (!sigsetjmp(*kos_slot_base[kos_current_task].fpu_state, 1)) {
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// printf("##### saved\n");
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if (ctx->uc_mcontext.__gregs[REG_EFL] & (1 << 21)) {
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kos_current_task += 1;
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if (kos_current_task > kos_task_count) {
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kos_current_task = 1;
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}
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} else {
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// printf("########## cli ############\n");
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}
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kos_current_slot = kos_slot_base + kos_current_task;
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kos_task_base = ((taskdata_t*)&kos_current_task) + kos_current_task;
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printf("##### kos_current_task: %u\n", kos_current_task);
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setitimer(ITIMER_PROF, &timeout, NULL);
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siglongjmp(*kos_slot_base[kos_current_task].fpu_state, 1);
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}
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}
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//void intwrite(int fd,
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void monitor() {
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fprintf(stderr, "Start monitor thread\n");
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// mkfifo("/tmp/umka.fifo.2u", 0644);
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// mkfifo("/tmp/umka.fifo.4u", 0644);
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FILE *fin = fopen("/tmp/umka.fifo.2u", "r");
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FILE *fout = fopen("/tmp/umka.fifo.4u", "w");
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// while (1) {
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fprintf(stderr, "### from monitor: %d\n", fileno(fout));
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// }
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if (!fin || !fout) {
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fprintf(stderr, "Can't open monitor files!\n");
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return;
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}
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run_test(fin, fout, 0);
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while (1) {
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for (int i = 0; i < 10000000; i++) {}
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printf("6 monitor\n");
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}
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}
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int main() {
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struct sigaction sa;
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sa.sa_sigaction = scheduler;
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sigemptyset(&sa.sa_mask);
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sa.sa_flags = SA_SIGINFO;
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if (sigaction(SIGPROF, &sa, NULL) == -1) {
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printf("Can't install signal handler!\n");
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return 1;
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}
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monitor_thread = monitor;
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umka_os();
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return 0;
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}
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