jehanne/qa/kern/awake.c

168 lines
4.3 KiB
C

/*
* This file is part of Jehanne.
*
* Copyright (C) 2015 Giacomo Tesio <giacomo@tesio.it>
*
* Jehanne is free software: you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation, version 2 of the License.
*
* Jehanne is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with Jehanne. If not, see <http://www.gnu.org/licenses/>.
*/
#include <u.h>
#include <lib9.h>
int verbose = 1;
int
failOnTimeout(void *v, char *s)
{
if(strncmp(s, "alarm", 4) == 0){
if(verbose)
print("%d: noted: %s\n", getpid(), s);
print("FAIL: timeout\n");
exits("FAIL");
}
return 0;
}
int
writeTillBlock(int fd)
{
int i = 0;
char buf[1025];
memset(buf, 1, sizeof(buf));
while(i < 300) /* pipes should block after at most 256kb */
{
if(write(fd, buf, sizeof(buf)) < 0){
break;
}
++i;
}
return i;
}
void
main(void)
{
int64_t start, elapsed, wkup, res;
int32_t sem = 0;
int fds[2];
char buf[1];
semacquire(&sem, 0);
alarm(40000); /* global timeout, FAIL if reached */
if (!atnotify(failOnTimeout, 1)){
fprint(2, "%r\n");
exits("atnotify fails");
}
awake(100000); /* this will be handled by the kernel, see pexit */
/* verify that rendezvous are interrupted */
fprint(2, "verify that rendezvous are interrupted\n", elapsed);
wkup = awake(1000);
start = nsec();
res = (int64_t)rendezvous(&elapsed, (void*)0x12345);
elapsed = (nsec() - start) / (1000 * 1000);
if(verbose)
fprint(2, "rendezvous interrupted, returned %#p, elapsed = %d ms\n", res, elapsed);
if(!awakened(wkup) || elapsed < 900 || elapsed > 1300){
print("FAIL: rendezvous\n");
exits("FAIL");
}
forgivewkp(wkup);
/* verify that sleeps are NOT interrupted */
fprint(2, "verify that sleeps are NOT interrupted\n", elapsed);
wkup = awake(700);
start = nsec();
sleep(1500);
elapsed = (nsec() - start) / (1000 * 1000);
if(verbose)
fprint(2, "sleep(1500), elapsed = %d ms\n", elapsed);
if(elapsed < 1300){
print("FAIL: sleep\n");
exits("FAIL");
}
forgivewkp(wkup);
/* verify that semacquires are interrupted */
fprint(2, "verify that semacquires are interrupted\n", elapsed);
pipe(fds);
wkup = awake(1000);
start = nsec();
if(verbose)
print("semacquire(&sem, 1)...\n");
res = semacquire(&sem, 1);
elapsed = (nsec() - start) / (1000 * 1000);
if(verbose)
print("semacquire(&sem, 1): returned %lld, elapsed = %d ms\n", res, elapsed);
if(!awakened(wkup) || res != -1 || elapsed < 900 || elapsed > 1300){
print("FAIL: semacquire\n");
exits("FAIL");
}
forgivewkp(wkup);
/* verify that tsemacquire are NOT interrupted */
fprint(2, "verify that tsemacquire are NOT interrupted\n", elapsed);
wkup = awake(700);
start = nsec();
res = tsemacquire(&sem, 1500);
elapsed = (nsec() - start) / (1000 * 1000);
if(verbose)
fprint(2, "tsemacquire(&sem, 1500) returned %lld, elapsed = %d ms\n", res, elapsed);
if(res != 0 || elapsed < 1300){
print("FAIL: tsemacquire\n");
exits("FAIL");
}
forgivewkp(wkup);
/* verify that reads are interrupted */
fprint(2, "verify that reads are interrupted\n", elapsed);
if(pipe(fds) < 0){
print("FAIL: pipe\n");
exits("FAIL");
}
wkup = awake(1000);
start = nsec();
res = read(fds[0], buf, 1);
elapsed = (nsec() - start) / (1000 * 1000);
if(verbose)
fprint(2, "read(fds[0], buf, 1) returned %lld, elapsed = %d ms\n", res, elapsed);
if(!awakened(wkup) || res != -1 || elapsed < 900 || elapsed > 1300){
print("FAIL: read\n");
exits("FAIL");
}
forgivewkp(wkup);
/* verify that writes are interrupted */
fprint(2, "verify that writes are interrupted\n", elapsed);
if(pipe(fds) < 0){
print("FAIL: pipe\n");
exits("FAIL");
}
wkup = awake(1000);
start = nsec();
res = writeTillBlock(fds[0]);
elapsed = (nsec() - start) / (1000 * 1000);
if(verbose)
fprint(2, "writeTillBlock(fds[0]) returned %lld, elapsed = %d ms\n", res, elapsed);
if(!awakened(wkup) || res >= 256 || elapsed < 900 || elapsed > 1300){
print("FAIL: write\n");
exits("FAIL");
}
forgivewkp(wkup);
/* do not forgivewkp the awake(100000): the kernel must handle it */
print("PASS\n");
exits("PASS");
}