d96a8c5661
they don't have to modify alarmtest.c, so we can use the original version to test, to make it harder to cheat.
88 lines
1.4 KiB
C
88 lines
1.4 KiB
C
//
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// test program for the alarm lab.
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// you can modify this file for testing,
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// but please make sure your kernel
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// modifications pass the original
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// versions of these tests.
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//
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#include "kernel/param.h"
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#include "kernel/types.h"
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#include "kernel/stat.h"
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#include "kernel/riscv.h"
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#include "user/user.h"
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void test0();
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void test1();
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void periodic();
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int
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main(int argc, char *argv[])
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{
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test0();
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test1();
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exit();
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}
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volatile static int count;
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void
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periodic()
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{
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count = count + 1;
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printf(1, "alarm!\n");
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sigreturn();
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}
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// tests whether the kernel calls
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// the alarm handler even a single time.
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void
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test0()
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{
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int i;
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printf(1, "test0 start\n");
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count = 0;
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sigalarm(2, periodic);
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for(i = 0; i < 1000*500000; i++){
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if((i % 250000) == 0)
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write(2, ".", 1);
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if(count > 0)
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break;
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}
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sigalarm(0, 0);
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if(count > 0){
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printf(1, "test0 passed\n");
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} else {
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printf(1, "test0 failed\n");
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}
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}
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void __attribute__ ((noinline)) foo(int i, int *j) {
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if((i % 2500000) == 0) {
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write(2, ".", 1);
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}
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*j += 1;
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}
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void
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test1()
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{
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int i;
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int j;
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printf(1, "test1 start\n");
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count = 0;
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j = 0;
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sigalarm(2, periodic);
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for(i = 0; i < 500000000; i++){
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if(count >= 10)
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break;
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foo(i, &j);
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}
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if(i != j || count < 10){
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// i should equal j
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printf(1, "test1 failed\n");
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} else {
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printf(1, "test1 passed\n");
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}
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}
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