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remote_page_fault is handled by the offloaded thread.

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Change-Id: I9cfad509260cceada74abdf39ca6a1822561e0d9
Refs: #1474
This commit is contained in:
Tomoki Shirasawa
2021-02-09 19:26:20 +09:00
committed by Masamichi Takagi
parent 9c7d0cfaec
commit 7efb394905
14 changed files with 957 additions and 32 deletions
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108
test/issues/1474/C1474T02.c Normal file
View File

@ -0,0 +1,108 @@
#define _GNU_SOURCE
#include <stdlib.h>
#include <stdio.h>
#include <unistd.h>
#include <sys/types.h>
#include <sys/mman.h>
#include <sys/wait.h>
#include <sched.h>
#include <fcntl.h>
#include <errno.h>
int
main(int argc, char **argv)
{
pid_t pid1;
pid_t pid2;
cpu_set_t cpu_set0;
cpu_set_t cpu_set;
int st;
int st1;
int i;
int pfd[2];
fprintf(stderr, "*** C1474T02 START ***\n");
pipe(pfd);
if (sched_getaffinity(getpid(), sizeof(cpu_set_t), &cpu_set0) == -1) {
perror("sched_getaffinity");
goto ng;
}
CPU_ZERO(&cpu_set);
for (i = 0; i < sizeof(cpu_set) * 8; i++) {
if (CPU_ISSET(i, &cpu_set0)) {
break;
}
}
for (i++; i < sizeof(cpu_set) * 8; i++) {
if (CPU_ISSET(i, &cpu_set0)) {
CPU_SET(i, &cpu_set);
break;
}
}
if ((pid1 = fork()) == 0) {
close(pfd[1]);
if (sched_setaffinity(getpid(), sizeof(cpu_set_t), &cpu_set)) {
perror("sched_setaffinity");
exit(1);
}
read(pfd[0], &i, 1);
exit(1);
}
if ((pid2 = fork()) == 0) {
int f;
char *p;
int r;
close(pfd[0]);
close(pfd[1]);
if (sched_setaffinity(getpid(), sizeof(cpu_set_t), &cpu_set)) {
perror("sched_setaffinity");
exit(1);
}
if ((f = open("testfile", O_RDONLY)) == -1) {
perror("open(testfile)");
exit(1);
}
p = mmap(NULL, 4096, PROT_READ, MAP_SHARED, f, 0);
if (p == (void *)-1) {
perror("mmap");
exit(1);
}
close(f);
f = open("outfile", O_WRONLY|O_CREAT|O_TRUNC, 0600);
if (f == -1) {
perror("open(outfile)");
exit(1);
}
if ((r = write(f, p, 1024)) == -1) {
perror("write");
exit(1);
}
fprintf(stderr, "remote page fault OK\n");
close(f);
if (r != 1024) {
fprintf(stderr, "BAD out size: %d\n", r);
exit(1);
}
exit(0);
}
close(pfd[0]);
if (waitpid(pid2, &st, 0) == -1) {
perror("waitpid");
goto ng;
}
write(pfd[1], &st, 1);
if (waitpid(pid1, &st1, 0) == -1) {
perror("waitpid");
goto ng;
}
if (WEXITSTATUS(st) == 0) {
fprintf(stderr, "*** C1474T02 OK ***\n");
exit(0);
}
ng:
fprintf(stderr, "*** C1474T02 NG ***\n");
exit(1);
}