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linuxdebug/tools/testing/selftests/filesystems/epoll/epoll_wakeup_test.c

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null pointer error
2024-07-16 15:50:57 +02:00
// SPDX-License-Identifier: GPL-2.0
#define _GNU_SOURCE
#include <asm/unistd.h>
#include <linux/time_types.h>
#include <poll.h>
#include <unistd.h>
#include <assert.h>
#include <signal.h>
#include <pthread.h>
#include <sys/epoll.h>
#include <sys/socket.h>
#include <sys/eventfd.h>
#include "../../kselftest_harness.h"
struct epoll_mtcontext
{
int efd[3];
int sfd[4];
volatile int count;
pthread_t main;
pthread_t waiter;
};
#ifndef __NR_epoll_pwait2
#define __NR_epoll_pwait2 -1
#endif
static inline int sys_epoll_pwait2(int fd, struct epoll_event *events,
int maxevents,
const struct __kernel_timespec *timeout,
const sigset_t *sigset, size_t sigsetsize)
{
return syscall(__NR_epoll_pwait2, fd, events, maxevents, timeout,
sigset, sigsetsize);
}
static void signal_handler(int signum)
{
}
static void kill_timeout(struct epoll_mtcontext *ctx)
{
usleep(1000000);
pthread_kill(ctx->main, SIGUSR1);
pthread_kill(ctx->waiter, SIGUSR1);
}
static void *waiter_entry1a(void *data)
{
struct epoll_event e;
struct epoll_mtcontext *ctx = data;
if (epoll_wait(ctx->efd[0], &e, 1, -1) > 0)
__sync_fetch_and_add(&ctx->count, 1);
return NULL;
}
static void *waiter_entry1ap(void *data)
{
struct pollfd pfd;
struct epoll_event e;
struct epoll_mtcontext *ctx = data;
pfd.fd = ctx->efd[0];
pfd.events = POLLIN;
if (poll(&pfd, 1, -1) > 0) {
if (epoll_wait(ctx->efd[0], &e, 1, 0) > 0)
__sync_fetch_and_add(&ctx->count, 1);
}
return NULL;
}
static void *waiter_entry1o(void *data)
{
struct epoll_event e;
struct epoll_mtcontext *ctx = data;
if (epoll_wait(ctx->efd[0], &e, 1, -1) > 0)
__sync_fetch_and_or(&ctx->count, 1);
return NULL;
}
static void *waiter_entry1op(void *data)
{
struct pollfd pfd;
struct epoll_event e;
struct epoll_mtcontext *ctx = data;
pfd.fd = ctx->efd[0];
pfd.events = POLLIN;
if (poll(&pfd, 1, -1) > 0) {
if (epoll_wait(ctx->efd[0], &e, 1, 0) > 0)
__sync_fetch_and_or(&ctx->count, 1);
}
return NULL;
}
static void *waiter_entry2a(void *data)
{
struct epoll_event events[2];
struct epoll_mtcontext *ctx = data;
if (epoll_wait(ctx->efd[0], events, 2, -1) > 0)
__sync_fetch_and_add(&ctx->count, 1);
return NULL;
}
static void *waiter_entry2ap(void *data)
{
struct pollfd pfd;
struct epoll_event events[2];
struct epoll_mtcontext *ctx = data;
pfd.fd = ctx->efd[0];
pfd.events = POLLIN;
if (poll(&pfd, 1, -1) > 0) {
if (epoll_wait(ctx->efd[0], events, 2, 0) > 0)
__sync_fetch_and_add(&ctx->count, 1);
}
return NULL;
}
static void *emitter_entry1(void *data)
{
struct epoll_mtcontext *ctx = data;
usleep(100000);
write(ctx->sfd[1], "w", 1);
kill_timeout(ctx);
return NULL;
}
static void *emitter_entry2(void *data)
{
struct epoll_mtcontext *ctx = data;
usleep(100000);
write(ctx->sfd[1], "w", 1);
write(ctx->sfd[3], "w", 1);
kill_timeout(ctx);
return NULL;
}
/*
* t0
* | (ew)
* e0
* | (lt)
* s0
*/
TEST(epoll1)
{
int efd;
int sfd[2];
struct epoll_event e;
ASSERT_EQ(socketpair(AF_UNIX, SOCK_STREAM, 0, sfd), 0);
efd = epoll_create(1);
ASSERT_GE(efd, 0);
e.events = EPOLLIN;
ASSERT_EQ(epoll_ctl(efd, EPOLL_CTL_ADD, sfd[0], &e), 0);
ASSERT_EQ(write(sfd[1], "w", 1), 1);
EXPECT_EQ(epoll_wait(efd, &e, 1, 0), 1);
EXPECT_EQ(epoll_wait(efd, &e, 1, 0), 1);
close(efd);
close(sfd[0]);
close(sfd[1]);
}
/*
* t0
* | (ew)
* e0
* | (et)
* s0
*/
TEST(epoll2)
{
int efd;
int sfd[2];
struct epoll_event e;
ASSERT_EQ(socketpair(AF_UNIX, SOCK_STREAM, 0, sfd), 0);
efd = epoll_create(1);
ASSERT_GE(efd, 0);
e.events = EPOLLIN | EPOLLET;
ASSERT_EQ(epoll_ctl(efd, EPOLL_CTL_ADD, sfd[0], &e), 0);
ASSERT_EQ(write(sfd[1], "w", 1), 1);
EXPECT_EQ(epoll_wait(efd, &e, 1, 0), 1);
EXPECT_EQ(epoll_wait(efd, &e, 1, 0), 0);
close(efd);
close(sfd[0]);
close(sfd[1]);
}
/*
* t0
* | (ew)
* e0
* (lt) / \ (lt)
* s0 s2
*/
TEST(epoll3)
{
int efd;
int sfd[4];
struct epoll_event events[2];
ASSERT_EQ(socketpair(AF_UNIX, SOCK_STREAM, 0, &sfd[0]), 0);
ASSERT_EQ(socketpair(AF_UNIX, SOCK_STREAM, 0, &sfd[2]), 0);
efd = epoll_create(1);
ASSERT_GE(efd, 0);
events[0].events = EPOLLIN;
ASSERT_EQ(epoll_ctl(efd, EPOLL_CTL_ADD, sfd[0], events), 0);
events[0].events = EPOLLIN;
ASSERT_EQ(epoll_ctl(efd, EPOLL_CTL_ADD, sfd[2], events), 0);
ASSERT_EQ(write(sfd[1], "w", 1), 1);
ASSERT_EQ(write(sfd[3], "w", 1), 1);
EXPECT_EQ(epoll_wait(efd, events, 2, 0), 2);
EXPECT_EQ(epoll_wait(efd, events, 2, 0), 2);
close(efd);
close(sfd[0]);
close(sfd[1]);
close(sfd[2]);
close(sfd[3]);
}
/*
* t0
* | (ew)
* e0
* (et) / \ (et)
* s0 s2
*/
TEST(epoll4)
{
int efd;
int sfd[4];
struct epoll_event events[2];
ASSERT_EQ(socketpair(AF_UNIX, SOCK_STREAM, 0, &sfd[0]), 0);
ASSERT_EQ(socketpair(AF_UNIX, SOCK_STREAM, 0, &sfd[2]), 0);
efd = epoll_create(1);
ASSERT_GE(efd, 0);
events[0].events = EPOLLIN | EPOLLET;
ASSERT_EQ(epoll_ctl(efd, EPOLL_CTL_ADD, sfd[0], events), 0);
events[0].events = EPOLLIN | EPOLLET;
ASSERT_EQ(epoll_ctl(efd, EPOLL_CTL_ADD, sfd[2], events), 0);
ASSERT_EQ(write(sfd[1], "w", 1), 1);
ASSERT_EQ(write(sfd[3], "w", 1), 1);
EXPECT_EQ(epoll_wait(efd, events, 2, 0), 2);
EXPECT_EQ(epoll_wait(efd, events, 2, 0), 0);
close(efd);
close(sfd[0]);
close(sfd[1]);
close(sfd[2]);
close(sfd[3]);
}
/*
* t0
* | (p)
* e0
* | (lt)
* s0
*/
TEST(epoll5)
{
int efd;
int sfd[2];
struct pollfd pfd;
struct epoll_event e;
ASSERT_EQ(socketpair(AF_UNIX, SOCK_STREAM, 0, &sfd[0]), 0);
efd = epoll_create(1);
ASSERT_GE(efd, 0);
e.events = EPOLLIN;
ASSERT_EQ(epoll_ctl(efd, EPOLL_CTL_ADD, sfd[0], &e), 0);
ASSERT_EQ(write(sfd[1], "w", 1), 1);
pfd.fd = efd;
pfd.events = POLLIN;
ASSERT_EQ(poll(&pfd, 1, 0), 1);
ASSERT_EQ(epoll_wait(efd, &e, 1, 0), 1);
pfd.fd = efd;
pfd.events = POLLIN;
ASSERT_EQ(poll(&pfd, 1, 0), 1);
ASSERT_EQ(epoll_wait(efd, &e, 1, 0), 1);
close(efd);
close(sfd[0]);
close(sfd[1]);
}
/*
* t0
* | (p)
* e0
* | (et)
* s0
*/
TEST(epoll6)
{
int efd;
int sfd[2];
struct pollfd pfd;
struct epoll_event e;
ASSERT_EQ(socketpair(AF_UNIX, SOCK_STREAM, 0, &sfd[0]), 0);
efd = epoll_create(1);
ASSERT_GE(efd, 0);
e.events = EPOLLIN | EPOLLET;
ASSERT_EQ(epoll_ctl(efd, EPOLL_CTL_ADD, sfd[0], &e), 0);
ASSERT_EQ(write(sfd[1], "w", 1), 1);
pfd.fd = efd;
pfd.events = POLLIN;
ASSERT_EQ(poll(&pfd, 1, 0), 1);
ASSERT_EQ(epoll_wait(efd, &e, 1, 0), 1);
pfd.fd = efd;
pfd.events = POLLIN;
ASSERT_EQ(poll(&pfd, 1, 0), 0);
ASSERT_EQ(epoll_wait(efd, &e, 1, 0), 0);
close(efd);
close(sfd[0]);
close(sfd[1]);
}
/*
* t0
* | (p)
* e0
* (lt) / \ (lt)
* s0 s2
*/
TEST(epoll7)
{
int efd;
int sfd[4];
struct pollfd pfd;
struct epoll_event events[2];
ASSERT_EQ(socketpair(AF_UNIX, SOCK_STREAM, 0, &sfd[0]), 0);
ASSERT_EQ(socketpair(AF_UNIX, SOCK_STREAM, 0, &sfd[2]), 0);
efd = epoll_create(1);
ASSERT_GE(efd, 0);
events[0].events = EPOLLIN;
ASSERT_EQ(epoll_ctl(efd, EPOLL_CTL_ADD, sfd[0], events), 0);
events[0].events = EPOLLIN;
ASSERT_EQ(epoll_ctl(efd, EPOLL_CTL_ADD, sfd[2], events), 0);
ASSERT_EQ(write(sfd[1], "w", 1), 1);
ASSERT_EQ(write(sfd[3], "w", 1), 1);
pfd.fd = efd;
pfd.events = POLLIN;
EXPECT_EQ(poll(&pfd, 1, 0), 1);
EXPECT_EQ(epoll_wait(efd, events, 2, 0), 2);
pfd.fd = efd;
pfd.events = POLLIN;
EXPECT_EQ(poll(&pfd, 1, 0), 1);
EXPECT_EQ(epoll_wait(efd, events, 2, 0), 2);
close(efd);
close(sfd[0]);
close(sfd[1]);
close(sfd[2]);
close(sfd[3]);
}
/*
* t0
* | (p)
* e0
* (et) / \ (et)
* s0 s2
*/
TEST(epoll8)
{
int efd;
int sfd[4];
struct pollfd pfd;
struct epoll_event events[2];
ASSERT_EQ(socketpair(AF_UNIX, SOCK_STREAM, 0, &sfd[0]), 0);
ASSERT_EQ(socketpair(AF_UNIX, SOCK_STREAM, 0, &sfd[2]), 0);
efd = epoll_create(1);
ASSERT_GE(efd, 0);
events[0].events = EPOLLIN | EPOLLET;
ASSERT_EQ(epoll_ctl(efd, EPOLL_CTL_ADD, sfd[0], events), 0);
events[0].events = EPOLLIN | EPOLLET;
ASSERT_EQ(epoll_ctl(efd, EPOLL_CTL_ADD, sfd[2], events), 0);
ASSERT_EQ(write(sfd[1], "w", 1), 1);
ASSERT_EQ(write(sfd[3], "w", 1), 1);
pfd.fd = efd;
pfd.events = POLLIN;
EXPECT_EQ(poll(&pfd, 1, 0), 1);
EXPECT_EQ(epoll_wait(efd, events, 2, 0), 2);
pfd.fd = efd;
pfd.events = POLLIN;
EXPECT_EQ(poll(&pfd, 1, 0), 0);
EXPECT_EQ(epoll_wait(efd, events, 2, 0), 0);
close(efd);
close(sfd[0]);
close(sfd[1]);
close(sfd[2]);
close(sfd[3]);
}
/*
* t0 t1
* (ew) \ / (ew)
* e0
* | (lt)
* s0
*/
TEST(epoll9)
{
pthread_t emitter;
struct epoll_event e;
struct epoll_mtcontext ctx = { 0 };
signal(SIGUSR1, signal_handler);
ASSERT_EQ(socketpair(AF_UNIX, SOCK_STREAM, 0, ctx.sfd), 0);
ctx.efd[0] = epoll_create(1);
ASSERT_GE(ctx.efd[0], 0);
e.events = EPOLLIN;
ASSERT_EQ(epoll_ctl(ctx.efd[0], EPOLL_CTL_ADD, ctx.sfd[0], &e), 0);
ctx.main = pthread_self();
ASSERT_EQ(pthread_create(&ctx.waiter, NULL, waiter_entry1a, &ctx), 0);
ASSERT_EQ(pthread_create(&emitter, NULL, emitter_entry1, &ctx), 0);
if (epoll_wait(ctx.efd[0], &e, 1, -1) > 0)
__sync_fetch_and_add(&ctx.count, 1);
ASSERT_EQ(pthread_join(ctx.waiter, NULL), 0);
EXPECT_EQ(ctx.count, 2);
if (pthread_tryjoin_np(emitter, NULL) < 0) {
pthread_kill(emitter, SIGUSR1);
pthread_join(emitter, NULL);
}
close(ctx.efd[0]);
close(ctx.sfd[0]);
close(ctx.sfd[1]);
}
/*
* t0 t1
* (ew) \ / (ew)
* e0
* | (et)
* s0
*/
TEST(epoll10)
{
pthread_t emitter;
struct epoll_event e;
struct epoll_mtcontext ctx = { 0 };
signal(SIGUSR1, signal_handler);
ASSERT_EQ(socketpair(AF_UNIX, SOCK_STREAM, 0, ctx.sfd), 0);
ctx.efd[0] = epoll_create(1);
ASSERT_GE(ctx.efd[0], 0);
e.events = EPOLLIN | EPOLLET;
ASSERT_EQ(epoll_ctl(ctx.efd[0], EPOLL_CTL_ADD, ctx.sfd[0], &e), 0);
ctx.main = pthread_self();
ASSERT_EQ(pthread_create(&ctx.waiter, NULL, waiter_entry1a, &ctx), 0);
ASSERT_EQ(pthread_create(&emitter, NULL, emitter_entry1, &ctx), 0);
if (epoll_wait(ctx.efd[0], &e, 1, -1) > 0)
__sync_fetch_and_add(&ctx.count, 1);
ASSERT_EQ(pthread_join(ctx.waiter, NULL), 0);
EXPECT_EQ(ctx.count, 1);
if (pthread_tryjoin_np(emitter, NULL) < 0) {
pthread_kill(emitter, SIGUSR1);
pthread_join(emitter, NULL);
}
close(ctx.efd[0]);
close(ctx.sfd[0]);
close(ctx.sfd[1]);
}
/*
* t0 t1
* (ew) \ / (ew)
* e0
* (lt) / \ (lt)
* s0 s2
*/
TEST(epoll11)
{
pthread_t emitter;
struct epoll_event events[2];
struct epoll_mtcontext ctx = { 0 };
signal(SIGUSR1, signal_handler);
ASSERT_EQ(socketpair(AF_UNIX, SOCK_STREAM, 0, &ctx.sfd[0]), 0);
ASSERT_EQ(socketpair(AF_UNIX, SOCK_STREAM, 0, &ctx.sfd[2]), 0);
ctx.efd[0] = epoll_create(1);
ASSERT_GE(ctx.efd[0], 0);
events[0].events = EPOLLIN;
ASSERT_EQ(epoll_ctl(ctx.efd[0], EPOLL_CTL_ADD, ctx.sfd[0], events), 0);
events[0].events = EPOLLIN;
ASSERT_EQ(epoll_ctl(ctx.efd[0], EPOLL_CTL_ADD, ctx.sfd[2], events), 0);
ctx.main = pthread_self();
ASSERT_EQ(pthread_create(&ctx.waiter, NULL, waiter_entry2a, &ctx), 0);
ASSERT_EQ(pthread_create(&emitter, NULL, emitter_entry2, &ctx), 0);
if (epoll_wait(ctx.efd[0], events, 2, -1) > 0)
__sync_fetch_and_add(&ctx.count, 1);
ASSERT_EQ(pthread_join(ctx.waiter, NULL), 0);
EXPECT_EQ(ctx.count, 2);
if (pthread_tryjoin_np(emitter, NULL) < 0) {
pthread_kill(emitter, SIGUSR1);
pthread_join(emitter, NULL);
}
close(ctx.efd[0]);
close(ctx.sfd[0]);
close(ctx.sfd[1]);
close(ctx.sfd[2]);
close(ctx.sfd[3]);
}
/*
* t0 t1
* (ew) \ / (ew)
* e0
* (et) / \ (et)
* s0 s2
*/
TEST(epoll12)
{
pthread_t emitter;
struct epoll_event events[2];
struct epoll_mtcontext ctx = { 0 };
signal(SIGUSR1, signal_handler);
ASSERT_EQ(socketpair(AF_UNIX, SOCK_STREAM, 0, &ctx.sfd[0]), 0);
ASSERT_EQ(socketpair(AF_UNIX, SOCK_STREAM, 0, &ctx.sfd[2]), 0);
ctx.efd[0] = epoll_create(1);
ASSERT_GE(ctx.efd[0], 0);
events[0].events = EPOLLIN | EPOLLET;
ASSERT_EQ(epoll_ctl(ctx.efd[0], EPOLL_CTL_ADD, ctx.sfd[0], events), 0);
events[0].events = EPOLLIN | EPOLLET;
ASSERT_EQ(epoll_ctl(ctx.efd[0], EPOLL_CTL_ADD, ctx.sfd[2], events), 0);
ctx.main = pthread_self();
ASSERT_EQ(pthread_create(&ctx.waiter, NULL, waiter_entry1a, &ctx), 0);
ASSERT_EQ(pthread_create(&emitter, NULL, emitter_entry2, &ctx), 0);
if (epoll_wait(ctx.efd[0], events, 1, -1) > 0)
__sync_fetch_and_add(&ctx.count, 1);
ASSERT_EQ(pthread_join(ctx.waiter, NULL), 0);
EXPECT_EQ(ctx.count, 2);
if (pthread_tryjoin_np(emitter, NULL) < 0) {
pthread_kill(emitter, SIGUSR1);
pthread_join(emitter, NULL);
}
close(ctx.efd[0]);
close(ctx.sfd[0]);
close(ctx.sfd[1]);
close(ctx.sfd[2]);
close(ctx.sfd[3]);
}
/*
* t0 t1
* (ew) \ / (p)
* e0
* | (lt)
* s0
*/
TEST(epoll13)
{
pthread_t emitter;
struct epoll_event e;
struct epoll_mtcontext ctx = { 0 };
signal(SIGUSR1, signal_handler);
ASSERT_EQ(socketpair(AF_UNIX, SOCK_STREAM, 0, ctx.sfd), 0);
ctx.efd[0] = epoll_create(1);
ASSERT_GE(ctx.efd[0], 0);
e.events = EPOLLIN;
ASSERT_EQ(epoll_ctl(ctx.efd[0], EPOLL_CTL_ADD, ctx.sfd[0], &e), 0);
ctx.main = pthread_self();
ASSERT_EQ(pthread_create(&ctx.waiter, NULL, waiter_entry1ap, &ctx), 0);
ASSERT_EQ(pthread_create(&emitter, NULL, emitter_entry1, &ctx), 0);
if (epoll_wait(ctx.efd[0], &e, 1, -1) > 0)
__sync_fetch_and_add(&ctx.count, 1);
ASSERT_EQ(pthread_join(ctx.waiter, NULL), 0);
EXPECT_EQ(ctx.count, 2);
if (pthread_tryjoin_np(emitter, NULL) < 0) {
pthread_kill(emitter, SIGUSR1);
pthread_join(emitter, NULL);
}
close(ctx.efd[0]);
close(ctx.sfd[0]);
close(ctx.sfd[1]);
}
/*
* t0 t1
* (ew) \ / (p)
* e0
* | (et)
* s0
*/
TEST(epoll14)
{
pthread_t emitter;
struct epoll_event e;
struct epoll_mtcontext ctx = { 0 };
signal(SIGUSR1, signal_handler);
ASSERT_EQ(socketpair(AF_UNIX, SOCK_STREAM, 0, ctx.sfd), 0);
ctx.efd[0] = epoll_create(1);
ASSERT_GE(ctx.efd[0], 0);
e.events = EPOLLIN | EPOLLET;
ASSERT_EQ(epoll_ctl(ctx.efd[0], EPOLL_CTL_ADD, ctx.sfd[0], &e), 0);
ctx.main = pthread_self();
ASSERT_EQ(pthread_create(&ctx.waiter, NULL, waiter_entry1ap, &ctx), 0);
ASSERT_EQ(pthread_create(&emitter, NULL, emitter_entry1, &ctx), 0);
if (epoll_wait(ctx.efd[0], &e, 1, -1) > 0)
__sync_fetch_and_add(&ctx.count, 1);
ASSERT_EQ(pthread_join(ctx.waiter, NULL), 0);
EXPECT_EQ(ctx.count, 1);
if (pthread_tryjoin_np(emitter, NULL) < 0) {
pthread_kill(emitter, SIGUSR1);
pthread_join(emitter, NULL);
}
close(ctx.efd[0]);
close(ctx.sfd[0]);
close(ctx.sfd[1]);
}
/*
* t0 t1
* (ew) \ / (p)
* e0
* (lt) / \ (lt)
* s0 s2
*/
TEST(epoll15)
{
pthread_t emitter;
struct epoll_event events[2];
struct epoll_mtcontext ctx = { 0 };
signal(SIGUSR1, signal_handler);
ASSERT_EQ(socketpair(AF_UNIX, SOCK_STREAM, 0, &ctx.sfd[0]), 0);
ASSERT_EQ(socketpair(AF_UNIX, SOCK_STREAM, 0, &ctx.sfd[2]), 0);
ctx.efd[0] = epoll_create(1);
ASSERT_GE(ctx.efd[0], 0);
events[0].events = EPOLLIN;
ASSERT_EQ(epoll_ctl(ctx.efd[0], EPOLL_CTL_ADD, ctx.sfd[0], events), 0);
events[0].events = EPOLLIN;
ASSERT_EQ(epoll_ctl(ctx.efd[0], EPOLL_CTL_ADD, ctx.sfd[2], events), 0);
ctx.main = pthread_self();
ASSERT_EQ(pthread_create(&ctx.waiter, NULL, waiter_entry2ap, &ctx), 0);
ASSERT_EQ(pthread_create(&emitter, NULL, emitter_entry2, &ctx), 0);
if (epoll_wait(ctx.efd[0], events, 2, -1) > 0)
__sync_fetch_and_add(&ctx.count, 1);
ASSERT_EQ(pthread_join(ctx.waiter, NULL), 0);
EXPECT_EQ(ctx.count, 2);
if (pthread_tryjoin_np(emitter, NULL) < 0) {
pthread_kill(emitter, SIGUSR1);
pthread_join(emitter, NULL);
}
close(ctx.efd[0]);
close(ctx.sfd[0]);
close(ctx.sfd[1]);
close(ctx.sfd[2]);
close(ctx.sfd[3]);
}
/*
* t0 t1
* (ew) \ / (p)
* e0
* (et) / \ (et)
* s0 s2
*/
TEST(epoll16)
{
pthread_t emitter;
struct epoll_event events[2];
struct epoll_mtcontext ctx = { 0 };
signal(SIGUSR1, signal_handler);
ASSERT_EQ(socketpair(AF_UNIX, SOCK_STREAM, 0, &ctx.sfd[0]), 0);
ASSERT_EQ(socketpair(AF_UNIX, SOCK_STREAM, 0, &ctx.sfd[2]), 0);
ctx.efd[0] = epoll_create(1);
ASSERT_GE(ctx.efd[0], 0);
events[0].events = EPOLLIN | EPOLLET;
ASSERT_EQ(epoll_ctl(ctx.efd[0], EPOLL_CTL_ADD, ctx.sfd[0], events), 0);
events[0].events = EPOLLIN | EPOLLET;
ASSERT_EQ(epoll_ctl(ctx.efd[0], EPOLL_CTL_ADD, ctx.sfd[2], events), 0);
ctx.main = pthread_self();
ASSERT_EQ(pthread_create(&ctx.waiter, NULL, waiter_entry1ap, &ctx), 0);
ASSERT_EQ(pthread_create(&emitter, NULL, emitter_entry2, &ctx), 0);
if (epoll_wait(ctx.efd[0], events, 1, -1) > 0)
__sync_fetch_and_add(&ctx.count, 1);
ASSERT_EQ(pthread_join(ctx.waiter, NULL), 0);
EXPECT_EQ(ctx.count, 2);
if (pthread_tryjoin_np(emitter, NULL) < 0) {
pthread_kill(emitter, SIGUSR1);
pthread_join(emitter, NULL);
}
close(ctx.efd[0]);
close(ctx.sfd[0]);
close(ctx.sfd[1]);
close(ctx.sfd[2]);
close(ctx.sfd[3]);
}
/*
* t0
* | (ew)
* e0
* | (lt)
* e1
* | (lt)
* s0
*/
TEST(epoll17)
{
int efd[2];
int sfd[2];
struct epoll_event e;
ASSERT_EQ(socketpair(AF_UNIX, SOCK_STREAM, 0, sfd), 0);
efd[0] = epoll_create(1);
ASSERT_GE(efd[0], 0);
efd[1] = epoll_create(1);
ASSERT_GE(efd[1], 0);
e.events = EPOLLIN;
ASSERT_EQ(epoll_ctl(efd[1], EPOLL_CTL_ADD, sfd[0], &e), 0);
e.events = EPOLLIN;
ASSERT_EQ(epoll_ctl(efd[0], EPOLL_CTL_ADD, efd[1], &e), 0);
ASSERT_EQ(write(sfd[1], "w", 1), 1);
EXPECT_EQ(epoll_wait(efd[0], &e, 1, 0), 1);
EXPECT_EQ(epoll_wait(efd[0], &e, 1, 0), 1);
close(efd[0]);
close(efd[1]);
close(sfd[0]);
close(sfd[1]);
}
/*
* t0
* | (ew)
* e0
* | (lt)
* e1
* | (et)
* s0
*/
TEST(epoll18)
{
int efd[2];
int sfd[2];
struct epoll_event e;
ASSERT_EQ(socketpair(AF_UNIX, SOCK_STREAM, 0, sfd), 0);
efd[0] = epoll_create(1);
ASSERT_GE(efd[0], 0);
efd[1] = epoll_create(1);
ASSERT_GE(efd[1], 0);
e.events = EPOLLIN | EPOLLET;
ASSERT_EQ(epoll_ctl(efd[1], EPOLL_CTL_ADD, sfd[0], &e), 0);
e.events = EPOLLIN;
ASSERT_EQ(epoll_ctl(efd[0], EPOLL_CTL_ADD, efd[1], &e), 0);
ASSERT_EQ(write(sfd[1], "w", 1), 1);
EXPECT_EQ(epoll_wait(efd[0], &e, 1, 0), 1);
EXPECT_EQ(epoll_wait(efd[0], &e, 1, 0), 1);
close(efd[0]);
close(efd[1]);
close(sfd[0]);
close(sfd[1]);
}
/*
* t0
* | (ew)
* e0
* | (et)
* e1
* | (lt)
* s0
*/
TEST(epoll19)
{
int efd[2];
int sfd[2];
struct epoll_event e;
ASSERT_EQ(socketpair(AF_UNIX, SOCK_STREAM, 0, sfd), 0);
efd[0] = epoll_create(1);
ASSERT_GE(efd[0], 0);
efd[1] = epoll_create(1);
ASSERT_GE(efd[1], 0);
e.events = EPOLLIN;
ASSERT_EQ(epoll_ctl(efd[1], EPOLL_CTL_ADD, sfd[0], &e), 0);
e.events = EPOLLIN | EPOLLET;
ASSERT_EQ(epoll_ctl(efd[0], EPOLL_CTL_ADD, efd[1], &e), 0);
ASSERT_EQ(write(sfd[1], "w", 1), 1);
EXPECT_EQ(epoll_wait(efd[0], &e, 1, 0), 1);
EXPECT_EQ(epoll_wait(efd[0], &e, 1, 0), 0);
close(efd[0]);
close(efd[1]);
close(sfd[0]);
close(sfd[1]);
}
/*
* t0
* | (ew)
* e0
* | (et)
* e1
* | (et)
* s0
*/
TEST(epoll20)
{
int efd[2];
int sfd[2];
struct epoll_event e;
ASSERT_EQ(socketpair(AF_UNIX, SOCK_STREAM, 0, sfd), 0);
efd[0] = epoll_create(1);
ASSERT_GE(efd[0], 0);
efd[1] = epoll_create(1);
ASSERT_GE(efd[1], 0);
e.events = EPOLLIN | EPOLLET;
ASSERT_EQ(epoll_ctl(efd[1], EPOLL_CTL_ADD, sfd[0], &e), 0);
e.events = EPOLLIN | EPOLLET;
ASSERT_EQ(epoll_ctl(efd[0], EPOLL_CTL_ADD, efd[1], &e), 0);
ASSERT_EQ(write(sfd[1], "w", 1), 1);
EXPECT_EQ(epoll_wait(efd[0], &e, 1, 0), 1);
EXPECT_EQ(epoll_wait(efd[0], &e, 1, 0), 0);
close(efd[0]);
close(efd[1]);
close(sfd[0]);
close(sfd[1]);
}
/*
* t0
* | (p)
* e0
* | (lt)
* e1
* | (lt)
* s0
*/
TEST(epoll21)
{
int efd[2];
int sfd[2];
struct pollfd pfd;
struct epoll_event e;
ASSERT_EQ(socketpair(AF_UNIX, SOCK_STREAM, 0, sfd), 0);
efd[0] = epoll_create(1);
ASSERT_GE(efd[0], 0);
efd[1] = epoll_create(1);
ASSERT_GE(efd[1], 0);
e.events = EPOLLIN;
ASSERT_EQ(epoll_ctl(efd[1], EPOLL_CTL_ADD, sfd[0], &e), 0);
e.events = EPOLLIN;
ASSERT_EQ(epoll_ctl(efd[0], EPOLL_CTL_ADD, efd[1], &e), 0);
ASSERT_EQ(write(sfd[1], "w", 1), 1);
pfd.fd = efd[0];
pfd.events = POLLIN;
EXPECT_EQ(poll(&pfd, 1, 0), 1);
EXPECT_EQ(epoll_wait(efd[0], &e, 1, 0), 1);
pfd.fd = efd[0];
pfd.events = POLLIN;
EXPECT_EQ(poll(&pfd, 1, 0), 1);
EXPECT_EQ(epoll_wait(efd[0], &e, 1, 0), 1);
close(efd[0]);
close(efd[1]);
close(sfd[0]);
close(sfd[1]);
}
/*
* t0
* | (p)
* e0
* | (lt)
* e1
* | (et)
* s0
*/
TEST(epoll22)
{
int efd[2];
int sfd[2];
struct pollfd pfd;
struct epoll_event e;
ASSERT_EQ(socketpair(AF_UNIX, SOCK_STREAM, 0, sfd), 0);
efd[0] = epoll_create(1);
ASSERT_GE(efd[0], 0);
efd[1] = epoll_create(1);
ASSERT_GE(efd[1], 0);
e.events = EPOLLIN | EPOLLET;
ASSERT_EQ(epoll_ctl(efd[1], EPOLL_CTL_ADD, sfd[0], &e), 0);
e.events = EPOLLIN;
ASSERT_EQ(epoll_ctl(efd[0], EPOLL_CTL_ADD, efd[1], &e), 0);
ASSERT_EQ(write(sfd[1], "w", 1), 1);
pfd.fd = efd[0];
pfd.events = POLLIN;
EXPECT_EQ(poll(&pfd, 1, 0), 1);
EXPECT_EQ(epoll_wait(efd[0], &e, 1, 0), 1);
pfd.fd = efd[0];
pfd.events = POLLIN;
EXPECT_EQ(poll(&pfd, 1, 0), 1);
EXPECT_EQ(epoll_wait(efd[0], &e, 1, 0), 1);
close(efd[0]);
close(efd[1]);
close(sfd[0]);
close(sfd[1]);
}
/*
* t0
* | (p)
* e0
* | (et)
* e1
* | (lt)
* s0
*/
TEST(epoll23)
{
int efd[2];
int sfd[2];
struct pollfd pfd;
struct epoll_event e;
ASSERT_EQ(socketpair(AF_UNIX, SOCK_STREAM, 0, sfd), 0);
efd[0] = epoll_create(1);
ASSERT_GE(efd[0], 0);
efd[1] = epoll_create(1);
ASSERT_GE(efd[1], 0);
e.events = EPOLLIN;
ASSERT_EQ(epoll_ctl(efd[1], EPOLL_CTL_ADD, sfd[0], &e), 0);
e.events = EPOLLIN | EPOLLET;
ASSERT_EQ(epoll_ctl(efd[0], EPOLL_CTL_ADD, efd[1], &e), 0);
ASSERT_EQ(write(sfd[1], "w", 1), 1);
pfd.fd = efd[0];
pfd.events = POLLIN;
EXPECT_EQ(poll(&pfd, 1, 0), 1);
EXPECT_EQ(epoll_wait(efd[0], &e, 1, 0), 1);
pfd.fd = efd[0];
pfd.events = POLLIN;
EXPECT_EQ(poll(&pfd, 1, 0), 0);
EXPECT_EQ(epoll_wait(efd[0], &e, 1, 0), 0);
close(efd[0]);
close(efd[1]);
close(sfd[0]);
close(sfd[1]);
}
/*
* t0
* | (p)
* e0
* | (et)
* e1
* | (et)
* s0
*/
TEST(epoll24)
{
int efd[2];
int sfd[2];
struct pollfd pfd;
struct epoll_event e;
ASSERT_EQ(socketpair(AF_UNIX, SOCK_STREAM, 0, sfd), 0);
efd[0] = epoll_create(1);
ASSERT_GE(efd[0], 0);
efd[1] = epoll_create(1);
ASSERT_GE(efd[1], 0);
e.events = EPOLLIN | EPOLLET;
ASSERT_EQ(epoll_ctl(efd[1], EPOLL_CTL_ADD, sfd[0], &e), 0);
e.events = EPOLLIN | EPOLLET;
ASSERT_EQ(epoll_ctl(efd[0], EPOLL_CTL_ADD, efd[1], &e), 0);
ASSERT_EQ(write(sfd[1], "w", 1), 1);
pfd.fd = efd[0];
pfd.events = POLLIN;
EXPECT_EQ(poll(&pfd, 1, 0), 1);
EXPECT_EQ(epoll_wait(efd[0], &e, 1, 0), 1);
pfd.fd = efd[0];
pfd.events = POLLIN;
EXPECT_EQ(poll(&pfd, 1, 0), 0);
EXPECT_EQ(epoll_wait(efd[0], &e, 1, 0), 0);
close(efd[0]);
close(efd[1]);
close(sfd[0]);
close(sfd[1]);
}
/*
* t0 t1
* (ew) \ / (ew)
* e0
* | (lt)
* e1
* | (lt)
* s0
*/
TEST(epoll25)
{
pthread_t emitter;
struct epoll_event e;
struct epoll_mtcontext ctx = { 0 };
signal(SIGUSR1, signal_handler);
ASSERT_EQ(socketpair(AF_UNIX, SOCK_STREAM, 0, ctx.sfd), 0);
ctx.efd[0] = epoll_create(1);
ASSERT_GE(ctx.efd[0], 0);
ctx.efd[1] = epoll_create(1);
ASSERT_GE(ctx.efd[1], 0);
e.events = EPOLLIN;
ASSERT_EQ(epoll_ctl(ctx.efd[1], EPOLL_CTL_ADD, ctx.sfd[0], &e), 0);
e.events = EPOLLIN;
ASSERT_EQ(epoll_ctl(ctx.efd[0], EPOLL_CTL_ADD, ctx.efd[1], &e), 0);
ctx.main = pthread_self();
ASSERT_EQ(pthread_create(&ctx.waiter, NULL, waiter_entry1a, &ctx), 0);
ASSERT_EQ(pthread_create(&emitter, NULL, emitter_entry1, &ctx), 0);
if (epoll_wait(ctx.efd[0], &e, 1, -1) > 0)
__sync_fetch_and_add(&ctx.count, 1);
ASSERT_EQ(pthread_join(ctx.waiter, NULL), 0);
EXPECT_EQ(ctx.count, 2);
if (pthread_tryjoin_np(emitter, NULL) < 0) {
pthread_kill(emitter, SIGUSR1);
pthread_join(emitter, NULL);
}
close(ctx.efd[0]);
close(ctx.efd[1]);
close(ctx.sfd[0]);
close(ctx.sfd[1]);
}
/*
* t0 t1
* (ew) \ / (ew)
* e0
* | (lt)
* e1
* | (et)
* s0
*/
TEST(epoll26)
{
pthread_t emitter;
struct epoll_event e;
struct epoll_mtcontext ctx = { 0 };
signal(SIGUSR1, signal_handler);
ASSERT_EQ(socketpair(AF_UNIX, SOCK_STREAM, 0, ctx.sfd), 0);
ctx.efd[0] = epoll_create(1);
ASSERT_GE(ctx.efd[0], 0);
ctx.efd[1] = epoll_create(1);
ASSERT_GE(ctx.efd[1], 0);
e.events = EPOLLIN | EPOLLET;
ASSERT_EQ(epoll_ctl(ctx.efd[1], EPOLL_CTL_ADD, ctx.sfd[0], &e), 0);
e.events = EPOLLIN;
ASSERT_EQ(epoll_ctl(ctx.efd[0], EPOLL_CTL_ADD, ctx.efd[1], &e), 0);
ctx.main = pthread_self();
ASSERT_EQ(pthread_create(&ctx.waiter, NULL, waiter_entry1a, &ctx), 0);
ASSERT_EQ(pthread_create(&emitter, NULL, emitter_entry1, &ctx), 0);
if (epoll_wait(ctx.efd[0], &e, 1, -1) > 0)
__sync_fetch_and_add(&ctx.count, 1);
ASSERT_EQ(pthread_join(ctx.waiter, NULL), 0);
EXPECT_EQ(ctx.count, 2);
if (pthread_tryjoin_np(emitter, NULL) < 0) {
pthread_kill(emitter, SIGUSR1);
pthread_join(emitter, NULL);
}
close(ctx.efd[0]);
close(ctx.efd[1]);
close(ctx.sfd[0]);
close(ctx.sfd[1]);
}
/*
* t0 t1
* (ew) \ / (ew)
* e0
* | (et)
* e1
* | (lt)
* s0
*/
TEST(epoll27)
{
pthread_t emitter;
struct epoll_event e;
struct epoll_mtcontext ctx = { 0 };
signal(SIGUSR1, signal_handler);
ASSERT_EQ(socketpair(AF_UNIX, SOCK_STREAM, 0, ctx.sfd), 0);
ctx.efd[0] = epoll_create(1);
ASSERT_GE(ctx.efd[0], 0);
ctx.efd[1] = epoll_create(1);
ASSERT_GE(ctx.efd[1], 0);
e.events = EPOLLIN;
ASSERT_EQ(epoll_ctl(ctx.efd[1], EPOLL_CTL_ADD, ctx.sfd[0], &e), 0);
e.events = EPOLLIN | EPOLLET;
ASSERT_EQ(epoll_ctl(ctx.efd[0], EPOLL_CTL_ADD, ctx.efd[1], &e), 0);
ctx.main = pthread_self();
ASSERT_EQ(pthread_create(&ctx.waiter, NULL, waiter_entry1a, &ctx), 0);
ASSERT_EQ(pthread_create(&emitter, NULL, emitter_entry1, &ctx), 0);
if (epoll_wait(ctx.efd[0], &e, 1, -1) > 0)
__sync_fetch_and_add(&ctx.count, 1);
ASSERT_EQ(pthread_join(ctx.waiter, NULL), 0);
EXPECT_EQ(ctx.count, 1);
if (pthread_tryjoin_np(emitter, NULL) < 0) {
pthread_kill(emitter, SIGUSR1);
pthread_join(emitter, NULL);
}
close(ctx.efd[0]);
close(ctx.efd[1]);
close(ctx.sfd[0]);
close(ctx.sfd[1]);
}
/*
* t0 t1
* (ew) \ / (ew)
* e0
* | (et)
* e1
* | (et)
* s0
*/
TEST(epoll28)
{
pthread_t emitter;
struct epoll_event e;
struct epoll_mtcontext ctx = { 0 };
signal(SIGUSR1, signal_handler);
ASSERT_EQ(socketpair(AF_UNIX, SOCK_STREAM, 0, ctx.sfd), 0);
ctx.efd[0] = epoll_create(1);
ASSERT_GE(ctx.efd[0], 0);
ctx.efd[1] = epoll_create(1);
ASSERT_GE(ctx.efd[1], 0);
e.events = EPOLLIN | EPOLLET;
ASSERT_EQ(epoll_ctl(ctx.efd[1], EPOLL_CTL_ADD, ctx.sfd[0], &e), 0);
e.events = EPOLLIN | EPOLLET;
ASSERT_EQ(epoll_ctl(ctx.efd[0], EPOLL_CTL_ADD, ctx.efd[1], &e), 0);
ctx.main = pthread_self();
ASSERT_EQ(pthread_create(&ctx.waiter, NULL, waiter_entry1a, &ctx), 0);
ASSERT_EQ(pthread_create(&emitter, NULL, emitter_entry1, &ctx), 0);
if (epoll_wait(ctx.efd[0], &e, 1, -1) > 0)
__sync_fetch_and_add(&ctx.count, 1);
ASSERT_EQ(pthread_join(ctx.waiter, NULL), 0);
EXPECT_EQ(ctx.count, 1);
if (pthread_tryjoin_np(emitter, NULL) < 0) {
pthread_kill(emitter, SIGUSR1);
pthread_join(emitter, NULL);
}
close(ctx.efd[0]);
close(ctx.efd[1]);
close(ctx.sfd[0]);
close(ctx.sfd[1]);
}
/*
* t0 t1
* (ew) \ / (p)
* e0
* | (lt)
* e1
* | (lt)
* s0
*/
TEST(epoll29)
{
pthread_t emitter;
struct epoll_event e;
struct epoll_mtcontext ctx = { 0 };
signal(SIGUSR1, signal_handler);
ASSERT_EQ(socketpair(AF_UNIX, SOCK_STREAM, 0, ctx.sfd), 0);
ctx.efd[0] = epoll_create(1);
ASSERT_GE(ctx.efd[0], 0);
ctx.efd[1] = epoll_create(1);
ASSERT_GE(ctx.efd[1], 0);
e.events = EPOLLIN;
ASSERT_EQ(epoll_ctl(ctx.efd[1], EPOLL_CTL_ADD, ctx.sfd[0], &e), 0);
e.events = EPOLLIN;
ASSERT_EQ(epoll_ctl(ctx.efd[0], EPOLL_CTL_ADD, ctx.efd[1], &e), 0);
ctx.main = pthread_self();
ASSERT_EQ(pthread_create(&ctx.waiter, NULL, waiter_entry1ap, &ctx), 0);
ASSERT_EQ(pthread_create(&emitter, NULL, emitter_entry1, &ctx), 0);
if (epoll_wait(ctx.efd[0], &e, 1, -1) > 0)
__sync_fetch_and_add(&ctx.count, 1);
ASSERT_EQ(pthread_join(ctx.waiter, NULL), 0);
EXPECT_EQ(ctx.count, 2);
if (pthread_tryjoin_np(emitter, NULL) < 0) {
pthread_kill(emitter, SIGUSR1);
pthread_join(emitter, NULL);
}
close(ctx.efd[0]);
close(ctx.sfd[0]);
close(ctx.sfd[1]);
}
/*
* t0 t1
* (ew) \ / (p)
* e0
* | (lt)
* e1
* | (et)
* s0
*/
TEST(epoll30)
{
pthread_t emitter;
struct epoll_event e;
struct epoll_mtcontext ctx = { 0 };
signal(SIGUSR1, signal_handler);
ASSERT_EQ(socketpair(AF_UNIX, SOCK_STREAM, 0, ctx.sfd), 0);
ctx.efd[0] = epoll_create(1);
ASSERT_GE(ctx.efd[0], 0);
ctx.efd[1] = epoll_create(1);
ASSERT_GE(ctx.efd[1], 0);
e.events = EPOLLIN | EPOLLET;
ASSERT_EQ(epoll_ctl(ctx.efd[1], EPOLL_CTL_ADD, ctx.sfd[0], &e), 0);
e.events = EPOLLIN;
ASSERT_EQ(epoll_ctl(ctx.efd[0], EPOLL_CTL_ADD, ctx.efd[1], &e), 0);
ctx.main = pthread_self();
ASSERT_EQ(pthread_create(&ctx.waiter, NULL, waiter_entry1ap, &ctx), 0);
ASSERT_EQ(pthread_create(&emitter, NULL, emitter_entry1, &ctx), 0);
if (epoll_wait(ctx.efd[0], &e, 1, -1) > 0)
__sync_fetch_and_add(&ctx.count, 1);
ASSERT_EQ(pthread_join(ctx.waiter, NULL), 0);
EXPECT_EQ(ctx.count, 2);
if (pthread_tryjoin_np(emitter, NULL) < 0) {
pthread_kill(emitter, SIGUSR1);
pthread_join(emitter, NULL);
}
close(ctx.efd[0]);
close(ctx.sfd[0]);
close(ctx.sfd[1]);
}
/*
* t0 t1
* (ew) \ / (p)
* e0
* | (et)
* e1
* | (lt)
* s0
*/
TEST(epoll31)
{
pthread_t emitter;
struct epoll_event e;
struct epoll_mtcontext ctx = { 0 };
signal(SIGUSR1, signal_handler);
ASSERT_EQ(socketpair(AF_UNIX, SOCK_STREAM, 0, ctx.sfd), 0);
ctx.efd[0] = epoll_create(1);
ASSERT_GE(ctx.efd[0], 0);
ctx.efd[1] = epoll_create(1);
ASSERT_GE(ctx.efd[1], 0);
e.events = EPOLLIN;
ASSERT_EQ(epoll_ctl(ctx.efd[1], EPOLL_CTL_ADD, ctx.sfd[0], &e), 0);
e.events = EPOLLIN | EPOLLET;
ASSERT_EQ(epoll_ctl(ctx.efd[0], EPOLL_CTL_ADD, ctx.efd[1], &e), 0);
ctx.main = pthread_self();
ASSERT_EQ(pthread_create(&ctx.waiter, NULL, waiter_entry1ap, &ctx), 0);
ASSERT_EQ(pthread_create(&emitter, NULL, emitter_entry1, &ctx), 0);
if (epoll_wait(ctx.efd[0], &e, 1, -1) > 0)
__sync_fetch_and_add(&ctx.count, 1);
ASSERT_EQ(pthread_join(ctx.waiter, NULL), 0);
EXPECT_EQ(ctx.count, 1);
if (pthread_tryjoin_np(emitter, NULL) < 0) {
pthread_kill(emitter, SIGUSR1);
pthread_join(emitter, NULL);
}
close(ctx.efd[0]);
close(ctx.sfd[0]);
close(ctx.sfd[1]);
}
/*
* t0 t1
* (ew) \ / (p)
* e0
* | (et)
* e1
* | (et)
* s0
*/
TEST(epoll32)
{
pthread_t emitter;
struct epoll_event e;
struct epoll_mtcontext ctx = { 0 };
signal(SIGUSR1, signal_handler);
ASSERT_EQ(socketpair(AF_UNIX, SOCK_STREAM, 0, ctx.sfd), 0);
ctx.efd[0] = epoll_create(1);
ASSERT_GE(ctx.efd[0], 0);
ctx.efd[1] = epoll_create(1);
ASSERT_GE(ctx.efd[1], 0);
e.events = EPOLLIN | EPOLLET;
ASSERT_EQ(epoll_ctl(ctx.efd[1], EPOLL_CTL_ADD, ctx.sfd[0], &e), 0);
e.events = EPOLLIN | EPOLLET;
ASSERT_EQ(epoll_ctl(ctx.efd[0], EPOLL_CTL_ADD, ctx.efd[1], &e), 0);
ctx.main = pthread_self();
ASSERT_EQ(pthread_create(&ctx.waiter, NULL, waiter_entry1ap, &ctx), 0);
ASSERT_EQ(pthread_create(&emitter, NULL, emitter_entry1, &ctx), 0);
if (epoll_wait(ctx.efd[0], &e, 1, -1) > 0)
__sync_fetch_and_add(&ctx.count, 1);
ASSERT_EQ(pthread_join(ctx.waiter, NULL), 0);
EXPECT_EQ(ctx.count, 1);
if (pthread_tryjoin_np(emitter, NULL) < 0) {
pthread_kill(emitter, SIGUSR1);
pthread_join(emitter, NULL);
}
close(ctx.efd[0]);
close(ctx.sfd[0]);
close(ctx.sfd[1]);
}
/*
* t0 t1
* (ew) | | (ew)
* | e0
* \ / (lt)
* e1
* | (lt)
* s0
*/
TEST(epoll33)
{
pthread_t emitter;
struct epoll_event e;
struct epoll_mtcontext ctx = { 0 };
signal(SIGUSR1, signal_handler);
ASSERT_EQ(socketpair(AF_UNIX, SOCK_STREAM, 0, ctx.sfd), 0);
ctx.efd[0] = epoll_create(1);
ASSERT_GE(ctx.efd[0], 0);
ctx.efd[1] = epoll_create(1);
ASSERT_GE(ctx.efd[1], 0);
e.events = EPOLLIN;
ASSERT_EQ(epoll_ctl(ctx.efd[1], EPOLL_CTL_ADD, ctx.sfd[0], &e), 0);
e.events = EPOLLIN;
ASSERT_EQ(epoll_ctl(ctx.efd[0], EPOLL_CTL_ADD, ctx.efd[1], &e), 0);
ctx.main = pthread_self();
ASSERT_EQ(pthread_create(&ctx.waiter, NULL, waiter_entry1a, &ctx), 0);
ASSERT_EQ(pthread_create(&emitter, NULL, emitter_entry1, &ctx), 0);
if (epoll_wait(ctx.efd[1], &e, 1, -1) > 0)
__sync_fetch_and_add(&ctx.count, 1);
ASSERT_EQ(pthread_join(ctx.waiter, NULL), 0);
EXPECT_EQ(ctx.count, 2);
if (pthread_tryjoin_np(emitter, NULL) < 0) {
pthread_kill(emitter, SIGUSR1);
pthread_join(emitter, NULL);
}
close(ctx.efd[0]);
close(ctx.efd[1]);
close(ctx.sfd[0]);
close(ctx.sfd[1]);
}
/*
* t0 t1
* (ew) | | (ew)
* | e0
* \ / (lt)
* e1
* | (et)
* s0
*/
TEST(epoll34)
{
pthread_t emitter;
struct epoll_event e;
struct epoll_mtcontext ctx = { 0 };
signal(SIGUSR1, signal_handler);
ASSERT_EQ(socketpair(AF_UNIX, SOCK_STREAM, 0, ctx.sfd), 0);
ctx.efd[0] = epoll_create(1);
ASSERT_GE(ctx.efd[0], 0);
ctx.efd[1] = epoll_create(1);
ASSERT_GE(ctx.efd[1], 0);
e.events = EPOLLIN | EPOLLET;
ASSERT_EQ(epoll_ctl(ctx.efd[1], EPOLL_CTL_ADD, ctx.sfd[0], &e), 0);
e.events = EPOLLIN;
ASSERT_EQ(epoll_ctl(ctx.efd[0], EPOLL_CTL_ADD, ctx.efd[1], &e), 0);
ctx.main = pthread_self();
ASSERT_EQ(pthread_create(&ctx.waiter, NULL, waiter_entry1o, &ctx), 0);
ASSERT_EQ(pthread_create(&emitter, NULL, emitter_entry1, &ctx), 0);
if (epoll_wait(ctx.efd[1], &e, 1, -1) > 0)
__sync_fetch_and_or(&ctx.count, 2);
ASSERT_EQ(pthread_join(ctx.waiter, NULL), 0);
EXPECT_TRUE((ctx.count == 2) || (ctx.count == 3));
if (pthread_tryjoin_np(emitter, NULL) < 0) {
pthread_kill(emitter, SIGUSR1);
pthread_join(emitter, NULL);
}
close(ctx.efd[0]);
close(ctx.efd[1]);
close(ctx.sfd[0]);
close(ctx.sfd[1]);
}
/*
* t0 t1
* (ew) | | (ew)
* | e0
* \ / (et)
* e1
* | (lt)
* s0
*/
TEST(epoll35)
{
pthread_t emitter;
struct epoll_event e;
struct epoll_mtcontext ctx = { 0 };
signal(SIGUSR1, signal_handler);
ASSERT_EQ(socketpair(AF_UNIX, SOCK_STREAM, 0, ctx.sfd), 0);
ctx.efd[0] = epoll_create(1);
ASSERT_GE(ctx.efd[0], 0);
ctx.efd[1] = epoll_create(1);
ASSERT_GE(ctx.efd[1], 0);
e.events = EPOLLIN;
ASSERT_EQ(epoll_ctl(ctx.efd[1], EPOLL_CTL_ADD, ctx.sfd[0], &e), 0);
e.events = EPOLLIN | EPOLLET;
ASSERT_EQ(epoll_ctl(ctx.efd[0], EPOLL_CTL_ADD, ctx.efd[1], &e), 0);
ctx.main = pthread_self();
ASSERT_EQ(pthread_create(&ctx.waiter, NULL, waiter_entry1a, &ctx), 0);
ASSERT_EQ(pthread_create(&emitter, NULL, emitter_entry1, &ctx), 0);
if (epoll_wait(ctx.efd[1], &e, 1, -1) > 0)
__sync_fetch_and_add(&ctx.count, 1);
ASSERT_EQ(pthread_join(ctx.waiter, NULL), 0);
EXPECT_EQ(ctx.count, 2);
if (pthread_tryjoin_np(emitter, NULL) < 0) {
pthread_kill(emitter, SIGUSR1);
pthread_join(emitter, NULL);
}
close(ctx.efd[0]);
close(ctx.efd[1]);
close(ctx.sfd[0]);
close(ctx.sfd[1]);
}
/*
* t0 t1
* (ew) | | (ew)
* | e0
* \ / (et)
* e1
* | (et)
* s0
*/
TEST(epoll36)
{
pthread_t emitter;
struct epoll_event e;
struct epoll_mtcontext ctx = { 0 };
signal(SIGUSR1, signal_handler);
ASSERT_EQ(socketpair(AF_UNIX, SOCK_STREAM, 0, ctx.sfd), 0);
ctx.efd[0] = epoll_create(1);
ASSERT_GE(ctx.efd[0], 0);
ctx.efd[1] = epoll_create(1);
ASSERT_GE(ctx.efd[1], 0);
e.events = EPOLLIN | EPOLLET;
ASSERT_EQ(epoll_ctl(ctx.efd[1], EPOLL_CTL_ADD, ctx.sfd[0], &e), 0);
e.events = EPOLLIN | EPOLLET;
ASSERT_EQ(epoll_ctl(ctx.efd[0], EPOLL_CTL_ADD, ctx.efd[1], &e), 0);
ctx.main = pthread_self();
ASSERT_EQ(pthread_create(&ctx.waiter, NULL, waiter_entry1o, &ctx), 0);
ASSERT_EQ(pthread_create(&emitter, NULL, emitter_entry1, &ctx), 0);
if (epoll_wait(ctx.efd[1], &e, 1, -1) > 0)
__sync_fetch_and_or(&ctx.count, 2);
ASSERT_EQ(pthread_join(ctx.waiter, NULL), 0);
EXPECT_TRUE((ctx.count == 2) || (ctx.count == 3));
if (pthread_tryjoin_np(emitter, NULL) < 0) {
pthread_kill(emitter, SIGUSR1);
pthread_join(emitter, NULL);
}
close(ctx.efd[0]);
close(ctx.efd[1]);
close(ctx.sfd[0]);
close(ctx.sfd[1]);
}
/*
* t0 t1
* (p) | | (ew)
* | e0
* \ / (lt)
* e1
* | (lt)
* s0
*/
TEST(epoll37)
{
pthread_t emitter;
struct pollfd pfd;
struct epoll_event e;
struct epoll_mtcontext ctx = { 0 };
signal(SIGUSR1, signal_handler);
ASSERT_EQ(socketpair(AF_UNIX, SOCK_STREAM, 0, ctx.sfd), 0);
ctx.efd[0] = epoll_create(1);
ASSERT_GE(ctx.efd[0], 0);
ctx.efd[1] = epoll_create(1);
ASSERT_GE(ctx.efd[1], 0);
e.events = EPOLLIN;
ASSERT_EQ(epoll_ctl(ctx.efd[1], EPOLL_CTL_ADD, ctx.sfd[0], &e), 0);
e.events = EPOLLIN;
ASSERT_EQ(epoll_ctl(ctx.efd[0], EPOLL_CTL_ADD, ctx.efd[1], &e), 0);
ctx.main = pthread_self();
ASSERT_EQ(pthread_create(&ctx.waiter, NULL, waiter_entry1a, &ctx), 0);
ASSERT_EQ(pthread_create(&emitter, NULL, emitter_entry1, &ctx), 0);
pfd.fd = ctx.efd[1];
pfd.events = POLLIN;
if (poll(&pfd, 1, -1) > 0) {
if (epoll_wait(ctx.efd[1], &e, 1, 0) > 0)
__sync_fetch_and_add(&ctx.count, 1);
}
ASSERT_EQ(pthread_join(ctx.waiter, NULL), 0);
EXPECT_EQ(ctx.count, 2);
if (pthread_tryjoin_np(emitter, NULL) < 0) {
pthread_kill(emitter, SIGUSR1);
pthread_join(emitter, NULL);
}
close(ctx.efd[0]);
close(ctx.efd[1]);
close(ctx.sfd[0]);
close(ctx.sfd[1]);
}
/*
* t0 t1
* (p) | | (ew)
* | e0
* \ / (lt)
* e1
* | (et)
* s0
*/
TEST(epoll38)
{
pthread_t emitter;
struct pollfd pfd;
struct epoll_event e;
struct epoll_mtcontext ctx = { 0 };
signal(SIGUSR1, signal_handler);
ASSERT_EQ(socketpair(AF_UNIX, SOCK_STREAM, 0, ctx.sfd), 0);
ctx.efd[0] = epoll_create(1);
ASSERT_GE(ctx.efd[0], 0);
ctx.efd[1] = epoll_create(1);
ASSERT_GE(ctx.efd[1], 0);
e.events = EPOLLIN | EPOLLET;
ASSERT_EQ(epoll_ctl(ctx.efd[1], EPOLL_CTL_ADD, ctx.sfd[0], &e), 0);
e.events = EPOLLIN;
ASSERT_EQ(epoll_ctl(ctx.efd[0], EPOLL_CTL_ADD, ctx.efd[1], &e), 0);
ctx.main = pthread_self();
ASSERT_EQ(pthread_create(&ctx.waiter, NULL, waiter_entry1o, &ctx), 0);
ASSERT_EQ(pthread_create(&emitter, NULL, emitter_entry1, &ctx), 0);
pfd.fd = ctx.efd[1];
pfd.events = POLLIN;
if (poll(&pfd, 1, -1) > 0) {
if (epoll_wait(ctx.efd[1], &e, 1, 0) > 0)
__sync_fetch_and_or(&ctx.count, 2);
}
ASSERT_EQ(pthread_join(ctx.waiter, NULL), 0);
EXPECT_TRUE((ctx.count == 2) || (ctx.count == 3));
if (pthread_tryjoin_np(emitter, NULL) < 0) {
pthread_kill(emitter, SIGUSR1);
pthread_join(emitter, NULL);
}
close(ctx.efd[0]);
close(ctx.efd[1]);
close(ctx.sfd[0]);
close(ctx.sfd[1]);
}
/*
* t0 t1
* (p) | | (ew)
* | e0
* \ / (et)
* e1
* | (lt)
* s0
*/
TEST(epoll39)
{
pthread_t emitter;
struct pollfd pfd;
struct epoll_event e;
struct epoll_mtcontext ctx = { 0 };
signal(SIGUSR1, signal_handler);
ASSERT_EQ(socketpair(AF_UNIX, SOCK_STREAM, 0, ctx.sfd), 0);
ctx.efd[0] = epoll_create(1);
ASSERT_GE(ctx.efd[0], 0);
ctx.efd[1] = epoll_create(1);
ASSERT_GE(ctx.efd[1], 0);
e.events = EPOLLIN;
ASSERT_EQ(epoll_ctl(ctx.efd[1], EPOLL_CTL_ADD, ctx.sfd[0], &e), 0);
e.events = EPOLLIN | EPOLLET;
ASSERT_EQ(epoll_ctl(ctx.efd[0], EPOLL_CTL_ADD, ctx.efd[1], &e), 0);
ctx.main = pthread_self();
ASSERT_EQ(pthread_create(&ctx.waiter, NULL, waiter_entry1a, &ctx), 0);
ASSERT_EQ(pthread_create(&emitter, NULL, emitter_entry1, &ctx), 0);
pfd.fd = ctx.efd[1];
pfd.events = POLLIN;
if (poll(&pfd, 1, -1) > 0) {
if (epoll_wait(ctx.efd[1], &e, 1, 0) > 0)
__sync_fetch_and_add(&ctx.count, 1);
}
ASSERT_EQ(pthread_join(ctx.waiter, NULL), 0);
EXPECT_EQ(ctx.count, 2);
if (pthread_tryjoin_np(emitter, NULL) < 0) {
pthread_kill(emitter, SIGUSR1);
pthread_join(emitter, NULL);
}
close(ctx.efd[0]);
close(ctx.efd[1]);
close(ctx.sfd[0]);
close(ctx.sfd[1]);
}
/*
* t0 t1
* (p) | | (ew)
* | e0
* \ / (et)
* e1
* | (et)
* s0
*/
TEST(epoll40)
{
pthread_t emitter;
struct pollfd pfd;
struct epoll_event e;
struct epoll_mtcontext ctx = { 0 };
signal(SIGUSR1, signal_handler);
ASSERT_EQ(socketpair(AF_UNIX, SOCK_STREAM, 0, ctx.sfd), 0);
ctx.efd[0] = epoll_create(1);
ASSERT_GE(ctx.efd[0], 0);
ctx.efd[1] = epoll_create(1);
ASSERT_GE(ctx.efd[1], 0);
e.events = EPOLLIN | EPOLLET;
ASSERT_EQ(epoll_ctl(ctx.efd[1], EPOLL_CTL_ADD, ctx.sfd[0], &e), 0);
e.events = EPOLLIN | EPOLLET;
ASSERT_EQ(epoll_ctl(ctx.efd[0], EPOLL_CTL_ADD, ctx.efd[1], &e), 0);
ctx.main = pthread_self();
ASSERT_EQ(pthread_create(&ctx.waiter, NULL, waiter_entry1o, &ctx), 0);
ASSERT_EQ(pthread_create(&emitter, NULL, emitter_entry1, &ctx), 0);
pfd.fd = ctx.efd[1];
pfd.events = POLLIN;
if (poll(&pfd, 1, -1) > 0) {
if (epoll_wait(ctx.efd[1], &e, 1, 0) > 0)
__sync_fetch_and_or(&ctx.count, 2);
}
ASSERT_EQ(pthread_join(ctx.waiter, NULL), 0);
EXPECT_TRUE((ctx.count == 2) || (ctx.count == 3));
if (pthread_tryjoin_np(emitter, NULL) < 0) {
pthread_kill(emitter, SIGUSR1);
pthread_join(emitter, NULL);
}
close(ctx.efd[0]);
close(ctx.efd[1]);
close(ctx.sfd[0]);
close(ctx.sfd[1]);
}
/*
* t0 t1
* (ew) | | (p)
* | e0
* \ / (lt)
* e1
* | (lt)
* s0
*/
TEST(epoll41)
{
pthread_t emitter;
struct epoll_event e;
struct epoll_mtcontext ctx = { 0 };
signal(SIGUSR1, signal_handler);
ASSERT_EQ(socketpair(AF_UNIX, SOCK_STREAM, 0, ctx.sfd), 0);
ctx.efd[0] = epoll_create(1);
ASSERT_GE(ctx.efd[0], 0);
ctx.efd[1] = epoll_create(1);
ASSERT_GE(ctx.efd[1], 0);
e.events = EPOLLIN;
ASSERT_EQ(epoll_ctl(ctx.efd[1], EPOLL_CTL_ADD, ctx.sfd[0], &e), 0);
e.events = EPOLLIN;
ASSERT_EQ(epoll_ctl(ctx.efd[0], EPOLL_CTL_ADD, ctx.efd[1], &e), 0);
ctx.main = pthread_self();
ASSERT_EQ(pthread_create(&ctx.waiter, NULL, waiter_entry1ap, &ctx), 0);
ASSERT_EQ(pthread_create(&emitter, NULL, emitter_entry1, &ctx), 0);
if (epoll_wait(ctx.efd[1], &e, 1, -1) > 0)
__sync_fetch_and_add(&ctx.count, 1);
ASSERT_EQ(pthread_join(ctx.waiter, NULL), 0);
EXPECT_EQ(ctx.count, 2);
if (pthread_tryjoin_np(emitter, NULL) < 0) {
pthread_kill(emitter, SIGUSR1);
pthread_join(emitter, NULL);
}
close(ctx.efd[0]);
close(ctx.efd[1]);
close(ctx.sfd[0]);
close(ctx.sfd[1]);
}
/*
* t0 t1
* (ew) | | (p)
* | e0
* \ / (lt)
* e1
* | (et)
* s0
*/
TEST(epoll42)
{
pthread_t emitter;
struct epoll_event e;
struct epoll_mtcontext ctx = { 0 };
signal(SIGUSR1, signal_handler);
ASSERT_EQ(socketpair(AF_UNIX, SOCK_STREAM, 0, ctx.sfd), 0);
ctx.efd[0] = epoll_create(1);
ASSERT_GE(ctx.efd[0], 0);
ctx.efd[1] = epoll_create(1);
ASSERT_GE(ctx.efd[1], 0);
e.events = EPOLLIN | EPOLLET;
ASSERT_EQ(epoll_ctl(ctx.efd[1], EPOLL_CTL_ADD, ctx.sfd[0], &e), 0);
e.events = EPOLLIN;
ASSERT_EQ(epoll_ctl(ctx.efd[0], EPOLL_CTL_ADD, ctx.efd[1], &e), 0);
ctx.main = pthread_self();
ASSERT_EQ(pthread_create(&ctx.waiter, NULL, waiter_entry1op, &ctx), 0);
ASSERT_EQ(pthread_create(&emitter, NULL, emitter_entry1, &ctx), 0);
if (epoll_wait(ctx.efd[1], &e, 1, -1) > 0)
__sync_fetch_and_or(&ctx.count, 2);
ASSERT_EQ(pthread_join(ctx.waiter, NULL), 0);
EXPECT_TRUE((ctx.count == 2) || (ctx.count == 3));
if (pthread_tryjoin_np(emitter, NULL) < 0) {
pthread_kill(emitter, SIGUSR1);
pthread_join(emitter, NULL);
}
close(ctx.efd[0]);
close(ctx.efd[1]);
close(ctx.sfd[0]);
close(ctx.sfd[1]);
}
/*
* t0 t1
* (ew) | | (p)
* | e0
* \ / (et)
* e1
* | (lt)
* s0
*/
TEST(epoll43)
{
pthread_t emitter;
struct epoll_event e;
struct epoll_mtcontext ctx = { 0 };
signal(SIGUSR1, signal_handler);
ASSERT_EQ(socketpair(AF_UNIX, SOCK_STREAM, 0, ctx.sfd), 0);
ctx.efd[0] = epoll_create(1);
ASSERT_GE(ctx.efd[0], 0);
ctx.efd[1] = epoll_create(1);
ASSERT_GE(ctx.efd[1], 0);
e.events = EPOLLIN;
ASSERT_EQ(epoll_ctl(ctx.efd[1], EPOLL_CTL_ADD, ctx.sfd[0], &e), 0);
e.events = EPOLLIN | EPOLLET;
ASSERT_EQ(epoll_ctl(ctx.efd[0], EPOLL_CTL_ADD, ctx.efd[1], &e), 0);
ctx.main = pthread_self();
ASSERT_EQ(pthread_create(&ctx.waiter, NULL, waiter_entry1ap, &ctx), 0);
ASSERT_EQ(pthread_create(&emitter, NULL, emitter_entry1, &ctx), 0);
if (epoll_wait(ctx.efd[1], &e, 1, -1) > 0)
__sync_fetch_and_add(&ctx.count, 1);
ASSERT_EQ(pthread_join(ctx.waiter, NULL), 0);
EXPECT_EQ(ctx.count, 2);
if (pthread_tryjoin_np(emitter, NULL) < 0) {
pthread_kill(emitter, SIGUSR1);
pthread_join(emitter, NULL);
}
close(ctx.efd[0]);
close(ctx.efd[1]);
close(ctx.sfd[0]);
close(ctx.sfd[1]);
}
/*
* t0 t1
* (ew) | | (p)
* | e0
* \ / (et)
* e1
* | (et)
* s0
*/
TEST(epoll44)
{
pthread_t emitter;
struct epoll_event e;
struct epoll_mtcontext ctx = { 0 };
signal(SIGUSR1, signal_handler);
ASSERT_EQ(socketpair(AF_UNIX, SOCK_STREAM, 0, ctx.sfd), 0);
ctx.efd[0] = epoll_create(1);
ASSERT_GE(ctx.efd[0], 0);
ctx.efd[1] = epoll_create(1);
ASSERT_GE(ctx.efd[1], 0);
e.events = EPOLLIN | EPOLLET;
ASSERT_EQ(epoll_ctl(ctx.efd[1], EPOLL_CTL_ADD, ctx.sfd[0], &e), 0);
e.events = EPOLLIN | EPOLLET;
ASSERT_EQ(epoll_ctl(ctx.efd[0], EPOLL_CTL_ADD, ctx.efd[1], &e), 0);
ctx.main = pthread_self();
ASSERT_EQ(pthread_create(&ctx.waiter, NULL, waiter_entry1op, &ctx), 0);
ASSERT_EQ(pthread_create(&emitter, NULL, emitter_entry1, &ctx), 0);
if (epoll_wait(ctx.efd[1], &e, 1, -1) > 0)
__sync_fetch_and_or(&ctx.count, 2);
ASSERT_EQ(pthread_join(ctx.waiter, NULL), 0);
EXPECT_TRUE((ctx.count == 2) || (ctx.count == 3));
if (pthread_tryjoin_np(emitter, NULL) < 0) {
pthread_kill(emitter, SIGUSR1);
pthread_join(emitter, NULL);
}
close(ctx.efd[0]);
close(ctx.efd[1]);
close(ctx.sfd[0]);
close(ctx.sfd[1]);
}
/*
* t0 t1
* (p) | | (p)
* | e0
* \ / (lt)
* e1
* | (lt)
* s0
*/
TEST(epoll45)
{
pthread_t emitter;
struct pollfd pfd;
struct epoll_event e;
struct epoll_mtcontext ctx = { 0 };
signal(SIGUSR1, signal_handler);
ASSERT_EQ(socketpair(AF_UNIX, SOCK_STREAM, 0, ctx.sfd), 0);
ctx.efd[0] = epoll_create(1);
ASSERT_GE(ctx.efd[0], 0);
ctx.efd[1] = epoll_create(1);
ASSERT_GE(ctx.efd[1], 0);
e.events = EPOLLIN;
ASSERT_EQ(epoll_ctl(ctx.efd[1], EPOLL_CTL_ADD, ctx.sfd[0], &e), 0);
e.events = EPOLLIN;
ASSERT_EQ(epoll_ctl(ctx.efd[0], EPOLL_CTL_ADD, ctx.efd[1], &e), 0);
ctx.main = pthread_self();
ASSERT_EQ(pthread_create(&ctx.waiter, NULL, waiter_entry1ap, &ctx), 0);
ASSERT_EQ(pthread_create(&emitter, NULL, emitter_entry1, &ctx), 0);
pfd.fd = ctx.efd[1];
pfd.events = POLLIN;
if (poll(&pfd, 1, -1) > 0) {
if (epoll_wait(ctx.efd[1], &e, 1, 0) > 0)
__sync_fetch_and_add(&ctx.count, 1);
}
ASSERT_EQ(pthread_join(ctx.waiter, NULL), 0);
EXPECT_EQ(ctx.count, 2);
if (pthread_tryjoin_np(emitter, NULL) < 0) {
pthread_kill(emitter, SIGUSR1);
pthread_join(emitter, NULL);
}
close(ctx.efd[0]);
close(ctx.efd[1]);
close(ctx.sfd[0]);
close(ctx.sfd[1]);
}
/*
* t0 t1
* (p) | | (p)
* | e0
* \ / (lt)
* e1
* | (et)
* s0
*/
TEST(epoll46)
{
pthread_t emitter;
struct epoll_event e;
struct epoll_mtcontext ctx = { 0 };
signal(SIGUSR1, signal_handler);
ASSERT_EQ(socketpair(AF_UNIX, SOCK_STREAM, 0, ctx.sfd), 0);
ctx.efd[0] = epoll_create(1);
ASSERT_GE(ctx.efd[0], 0);
ctx.efd[1] = epoll_create(1);
ASSERT_GE(ctx.efd[1], 0);
e.events = EPOLLIN | EPOLLET;
ASSERT_EQ(epoll_ctl(ctx.efd[1], EPOLL_CTL_ADD, ctx.sfd[0], &e), 0);
e.events = EPOLLIN;
ASSERT_EQ(epoll_ctl(ctx.efd[0], EPOLL_CTL_ADD, ctx.efd[1], &e), 0);
ctx.main = pthread_self();
ASSERT_EQ(pthread_create(&ctx.waiter, NULL, waiter_entry1op, &ctx), 0);
ASSERT_EQ(pthread_create(&emitter, NULL, emitter_entry1, &ctx), 0);
if (epoll_wait(ctx.efd[1], &e, 1, -1) > 0)
__sync_fetch_and_or(&ctx.count, 2);
ASSERT_EQ(pthread_join(ctx.waiter, NULL), 0);
EXPECT_TRUE((ctx.count == 2) || (ctx.count == 3));
if (pthread_tryjoin_np(emitter, NULL) < 0) {
pthread_kill(emitter, SIGUSR1);
pthread_join(emitter, NULL);
}
close(ctx.efd[0]);
close(ctx.efd[1]);
close(ctx.sfd[0]);
close(ctx.sfd[1]);
}
/*
* t0 t1
* (p) | | (p)
* | e0
* \ / (et)
* e1
* | (lt)
* s0
*/
TEST(epoll47)
{
pthread_t emitter;
struct pollfd pfd;
struct epoll_event e;
struct epoll_mtcontext ctx = { 0 };
signal(SIGUSR1, signal_handler);
ASSERT_EQ(socketpair(AF_UNIX, SOCK_STREAM, 0, ctx.sfd), 0);
ctx.efd[0] = epoll_create(1);
ASSERT_GE(ctx.efd[0], 0);
ctx.efd[1] = epoll_create(1);
ASSERT_GE(ctx.efd[1], 0);
e.events = EPOLLIN;
ASSERT_EQ(epoll_ctl(ctx.efd[1], EPOLL_CTL_ADD, ctx.sfd[0], &e), 0);
e.events = EPOLLIN | EPOLLET;
ASSERT_EQ(epoll_ctl(ctx.efd[0], EPOLL_CTL_ADD, ctx.efd[1], &e), 0);
ctx.main = pthread_self();
ASSERT_EQ(pthread_create(&ctx.waiter, NULL, waiter_entry1ap, &ctx), 0);
ASSERT_EQ(pthread_create(&emitter, NULL, emitter_entry1, &ctx), 0);
pfd.fd = ctx.efd[1];
pfd.events = POLLIN;
if (poll(&pfd, 1, -1) > 0) {
if (epoll_wait(ctx.efd[1], &e, 1, 0) > 0)
__sync_fetch_and_add(&ctx.count, 1);
}
ASSERT_EQ(pthread_join(ctx.waiter, NULL), 0);
EXPECT_EQ(ctx.count, 2);
if (pthread_tryjoin_np(emitter, NULL) < 0) {
pthread_kill(emitter, SIGUSR1);
pthread_join(emitter, NULL);
}
close(ctx.efd[0]);
close(ctx.efd[1]);
close(ctx.sfd[0]);
close(ctx.sfd[1]);
}
/*
* t0 t1
* (p) | | (p)
* | e0
* \ / (et)
* e1
* | (et)
* s0
*/
TEST(epoll48)
{
pthread_t emitter;
struct epoll_event e;
struct epoll_mtcontext ctx = { 0 };
signal(SIGUSR1, signal_handler);
ASSERT_EQ(socketpair(AF_UNIX, SOCK_STREAM, 0, ctx.sfd), 0);
ctx.efd[0] = epoll_create(1);
ASSERT_GE(ctx.efd[0], 0);
ctx.efd[1] = epoll_create(1);
ASSERT_GE(ctx.efd[1], 0);
e.events = EPOLLIN | EPOLLET;
ASSERT_EQ(epoll_ctl(ctx.efd[1], EPOLL_CTL_ADD, ctx.sfd[0], &e), 0);
e.events = EPOLLIN | EPOLLET;
ASSERT_EQ(epoll_ctl(ctx.efd[0], EPOLL_CTL_ADD, ctx.efd[1], &e), 0);
ctx.main = pthread_self();
ASSERT_EQ(pthread_create(&ctx.waiter, NULL, waiter_entry1op, &ctx), 0);
ASSERT_EQ(pthread_create(&emitter, NULL, emitter_entry1, &ctx), 0);
if (epoll_wait(ctx.efd[1], &e, 1, -1) > 0)
__sync_fetch_and_or(&ctx.count, 2);
ASSERT_EQ(pthread_join(ctx.waiter, NULL), 0);
EXPECT_TRUE((ctx.count == 2) || (ctx.count == 3));
if (pthread_tryjoin_np(emitter, NULL) < 0) {
pthread_kill(emitter, SIGUSR1);
pthread_join(emitter, NULL);
}
close(ctx.efd[0]);
close(ctx.efd[1]);
close(ctx.sfd[0]);
close(ctx.sfd[1]);
}
/*
* t0
* | (ew)
* e0
* (lt) / \ (lt)
* e1 e2
* (lt) | | (lt)
* s0 s2
*/
TEST(epoll49)
{
int efd[3];
int sfd[4];
struct epoll_event events[2];
ASSERT_EQ(socketpair(AF_UNIX, SOCK_STREAM, 0, &sfd[0]), 0);
ASSERT_EQ(socketpair(AF_UNIX, SOCK_STREAM, 0, &sfd[2]), 0);
efd[0] = epoll_create(1);
ASSERT_GE(efd[0], 0);
efd[1] = epoll_create(1);
ASSERT_GE(efd[1], 0);
efd[2] = epoll_create(1);
ASSERT_GE(efd[2], 0);
events[0].events = EPOLLIN;
ASSERT_EQ(epoll_ctl(efd[1], EPOLL_CTL_ADD, sfd[0], events), 0);
events[0].events = EPOLLIN;
ASSERT_EQ(epoll_ctl(efd[2], EPOLL_CTL_ADD, sfd[2], events), 0);
events[0].events = EPOLLIN;
ASSERT_EQ(epoll_ctl(efd[0], EPOLL_CTL_ADD, efd[1], events), 0);
events[0].events = EPOLLIN;
ASSERT_EQ(epoll_ctl(efd[0], EPOLL_CTL_ADD, efd[2], events), 0);
ASSERT_EQ(write(sfd[1], "w", 1), 1);
ASSERT_EQ(write(sfd[3], "w", 1), 1);
EXPECT_EQ(epoll_wait(efd[0], events, 2, 0), 2);
EXPECT_EQ(epoll_wait(efd[0], events, 2, 0), 2);
close(efd[0]);
close(efd[1]);
close(efd[2]);
close(sfd[0]);
close(sfd[1]);
close(sfd[2]);
close(sfd[3]);
}
/*
* t0
* | (ew)
* e0
* (et) / \ (et)
* e1 e2
* (lt) | | (lt)
* s0 s2
*/
TEST(epoll50)
{
int efd[3];
int sfd[4];
struct epoll_event events[2];
ASSERT_EQ(socketpair(AF_UNIX, SOCK_STREAM, 0, &sfd[0]), 0);
ASSERT_EQ(socketpair(AF_UNIX, SOCK_STREAM, 0, &sfd[2]), 0);
efd[0] = epoll_create(1);
ASSERT_GE(efd[0], 0);
efd[1] = epoll_create(1);
ASSERT_GE(efd[1], 0);
efd[2] = epoll_create(1);
ASSERT_GE(efd[2], 0);
events[0].events = EPOLLIN;
ASSERT_EQ(epoll_ctl(efd[1], EPOLL_CTL_ADD, sfd[0], events), 0);
events[0].events = EPOLLIN;
ASSERT_EQ(epoll_ctl(efd[2], EPOLL_CTL_ADD, sfd[2], events), 0);
events[0].events = EPOLLIN | EPOLLET;
ASSERT_EQ(epoll_ctl(efd[0], EPOLL_CTL_ADD, efd[1], events), 0);
events[0].events = EPOLLIN | EPOLLET;
ASSERT_EQ(epoll_ctl(efd[0], EPOLL_CTL_ADD, efd[2], events), 0);
ASSERT_EQ(write(sfd[1], "w", 1), 1);
ASSERT_EQ(write(sfd[3], "w", 1), 1);
EXPECT_EQ(epoll_wait(efd[0], events, 2, 0), 2);
EXPECT_EQ(epoll_wait(efd[0], events, 2, 0), 0);
close(efd[0]);
close(efd[1]);
close(efd[2]);
close(sfd[0]);
close(sfd[1]);
close(sfd[2]);
close(sfd[3]);
}
/*
* t0
* | (p)
* e0
* (lt) / \ (lt)
* e1 e2
* (lt) | | (lt)
* s0 s2
*/
TEST(epoll51)
{
int efd[3];
int sfd[4];
struct pollfd pfd;
struct epoll_event events[2];
ASSERT_EQ(socketpair(AF_UNIX, SOCK_STREAM, 0, &sfd[0]), 0);
ASSERT_EQ(socketpair(AF_UNIX, SOCK_STREAM, 0, &sfd[2]), 0);
efd[0] = epoll_create(1);
ASSERT_GE(efd[0], 0);
efd[1] = epoll_create(1);
ASSERT_GE(efd[1], 0);
efd[2] = epoll_create(1);
ASSERT_GE(efd[2], 0);
events[0].events = EPOLLIN;
ASSERT_EQ(epoll_ctl(efd[1], EPOLL_CTL_ADD, sfd[0], events), 0);
events[0].events = EPOLLIN;
ASSERT_EQ(epoll_ctl(efd[2], EPOLL_CTL_ADD, sfd[2], events), 0);
events[0].events = EPOLLIN;
ASSERT_EQ(epoll_ctl(efd[0], EPOLL_CTL_ADD, efd[1], events), 0);
events[0].events = EPOLLIN;
ASSERT_EQ(epoll_ctl(efd[0], EPOLL_CTL_ADD, efd[2], events), 0);
ASSERT_EQ(write(sfd[1], "w", 1), 1);
ASSERT_EQ(write(sfd[3], "w", 1), 1);
pfd.fd = efd[0];
pfd.events = POLLIN;
EXPECT_EQ(poll(&pfd, 1, 0), 1);
EXPECT_EQ(epoll_wait(efd[0], events, 2, 0), 2);
pfd.fd = efd[0];
pfd.events = POLLIN;
EXPECT_EQ(poll(&pfd, 1, 0), 1);
EXPECT_EQ(epoll_wait(efd[0], events, 2, 0), 2);
close(efd[0]);
close(efd[1]);
close(efd[2]);
close(sfd[0]);
close(sfd[1]);
close(sfd[2]);
close(sfd[3]);
}
/*
* t0
* | (p)
* e0
* (et) / \ (et)
* e1 e2
* (lt) | | (lt)
* s0 s2
*/
TEST(epoll52)
{
int efd[3];
int sfd[4];
struct pollfd pfd;
struct epoll_event events[2];
ASSERT_EQ(socketpair(AF_UNIX, SOCK_STREAM, 0, &sfd[0]), 0);
ASSERT_EQ(socketpair(AF_UNIX, SOCK_STREAM, 0, &sfd[2]), 0);
efd[0] = epoll_create(1);
ASSERT_GE(efd[0], 0);
efd[1] = epoll_create(1);
ASSERT_GE(efd[1], 0);
efd[2] = epoll_create(1);
ASSERT_GE(efd[2], 0);
events[0].events = EPOLLIN;
ASSERT_EQ(epoll_ctl(efd[1], EPOLL_CTL_ADD, sfd[0], events), 0);
events[0].events = EPOLLIN;
ASSERT_EQ(epoll_ctl(efd[2], EPOLL_CTL_ADD, sfd[2], events), 0);
events[0].events = EPOLLIN | EPOLLET;
ASSERT_EQ(epoll_ctl(efd[0], EPOLL_CTL_ADD, efd[1], events), 0);
events[0].events = EPOLLIN | EPOLLET;
ASSERT_EQ(epoll_ctl(efd[0], EPOLL_CTL_ADD, efd[2], events), 0);
ASSERT_EQ(write(sfd[1], "w", 1), 1);
ASSERT_EQ(write(sfd[3], "w", 1), 1);
pfd.fd = efd[0];
pfd.events = POLLIN;
EXPECT_EQ(poll(&pfd, 1, 0), 1);
EXPECT_EQ(epoll_wait(efd[0], events, 2, 0), 2);
pfd.fd = efd[0];
pfd.events = POLLIN;
EXPECT_EQ(poll(&pfd, 1, 0), 0);
EXPECT_EQ(epoll_wait(efd[0], events, 2, 0), 0);
close(efd[0]);
close(efd[1]);
close(efd[2]);
close(sfd[0]);
close(sfd[1]);
close(sfd[2]);
close(sfd[3]);
}
/*
* t0 t1
* (ew) \ / (ew)
* e0
* (lt) / \ (lt)
* e1 e2
* (lt) | | (lt)
* s0 s2
*/
TEST(epoll53)
{
pthread_t emitter;
struct epoll_event e;
struct epoll_mtcontext ctx = { 0 };
signal(SIGUSR1, signal_handler);
ASSERT_EQ(socketpair(AF_UNIX, SOCK_STREAM, 0, &ctx.sfd[0]), 0);
ASSERT_EQ(socketpair(AF_UNIX, SOCK_STREAM, 0, &ctx.sfd[2]), 0);
ctx.efd[0] = epoll_create(1);
ASSERT_GE(ctx.efd[0], 0);
ctx.efd[1] = epoll_create(1);
ASSERT_GE(ctx.efd[1], 0);
ctx.efd[2] = epoll_create(1);
ASSERT_GE(ctx.efd[2], 0);
e.events = EPOLLIN;
ASSERT_EQ(epoll_ctl(ctx.efd[1], EPOLL_CTL_ADD, ctx.sfd[0], &e), 0);
e.events = EPOLLIN;
ASSERT_EQ(epoll_ctl(ctx.efd[2], EPOLL_CTL_ADD, ctx.sfd[2], &e), 0);
e.events = EPOLLIN;
ASSERT_EQ(epoll_ctl(ctx.efd[0], EPOLL_CTL_ADD, ctx.efd[1], &e), 0);
e.events = EPOLLIN;
ASSERT_EQ(epoll_ctl(ctx.efd[0], EPOLL_CTL_ADD, ctx.efd[2], &e), 0);
ctx.main = pthread_self();
ASSERT_EQ(pthread_create(&ctx.waiter, NULL, waiter_entry1a, &ctx), 0);
ASSERT_EQ(pthread_create(&emitter, NULL, emitter_entry2, &ctx), 0);
if (epoll_wait(ctx.efd[0], &e, 1, -1) > 0)
__sync_fetch_and_add(&ctx.count, 1);
ASSERT_EQ(pthread_join(ctx.waiter, NULL), 0);
EXPECT_EQ(ctx.count, 2);
if (pthread_tryjoin_np(emitter, NULL) < 0) {
pthread_kill(emitter, SIGUSR1);
pthread_join(emitter, NULL);
}
close(ctx.efd[0]);
close(ctx.efd[1]);
close(ctx.efd[2]);
close(ctx.sfd[0]);
close(ctx.sfd[1]);
close(ctx.sfd[2]);
close(ctx.sfd[3]);
}
/*
* t0 t1
* (ew) \ / (ew)
* e0
* (et) / \ (et)
* e1 e2
* (lt) | | (lt)
* s0 s2
*/
TEST(epoll54)
{
pthread_t emitter;
struct epoll_event e;
struct epoll_mtcontext ctx = { 0 };
signal(SIGUSR1, signal_handler);
ASSERT_EQ(socketpair(AF_UNIX, SOCK_STREAM, 0, &ctx.sfd[0]), 0);
ASSERT_EQ(socketpair(AF_UNIX, SOCK_STREAM, 0, &ctx.sfd[2]), 0);
ctx.efd[0] = epoll_create(1);
ASSERT_GE(ctx.efd[0], 0);
ctx.efd[1] = epoll_create(1);
ASSERT_GE(ctx.efd[1], 0);
ctx.efd[2] = epoll_create(1);
ASSERT_GE(ctx.efd[2], 0);
e.events = EPOLLIN;
ASSERT_EQ(epoll_ctl(ctx.efd[1], EPOLL_CTL_ADD, ctx.sfd[0], &e), 0);
e.events = EPOLLIN;
ASSERT_EQ(epoll_ctl(ctx.efd[2], EPOLL_CTL_ADD, ctx.sfd[2], &e), 0);
e.events = EPOLLIN | EPOLLET;
ASSERT_EQ(epoll_ctl(ctx.efd[0], EPOLL_CTL_ADD, ctx.efd[1], &e), 0);
e.events = EPOLLIN | EPOLLET;
ASSERT_EQ(epoll_ctl(ctx.efd[0], EPOLL_CTL_ADD, ctx.efd[2], &e), 0);
ctx.main = pthread_self();
ASSERT_EQ(pthread_create(&ctx.waiter, NULL, waiter_entry1a, &ctx), 0);
ASSERT_EQ(pthread_create(&emitter, NULL, emitter_entry2, &ctx), 0);
if (epoll_wait(ctx.efd[0], &e, 1, -1) > 0)
__sync_fetch_and_add(&ctx.count, 1);
ASSERT_EQ(pthread_join(ctx.waiter, NULL), 0);
EXPECT_EQ(ctx.count, 2);
if (pthread_tryjoin_np(emitter, NULL) < 0) {
pthread_kill(emitter, SIGUSR1);
pthread_join(emitter, NULL);
}
close(ctx.efd[0]);
close(ctx.efd[1]);
close(ctx.efd[2]);
close(ctx.sfd[0]);
close(ctx.sfd[1]);
close(ctx.sfd[2]);
close(ctx.sfd[3]);
}
/*
* t0 t1
* (ew) \ / (p)
* e0
* (lt) / \ (lt)
* e1 e2
* (lt) | | (lt)
* s0 s2
*/
TEST(epoll55)
{
pthread_t emitter;
struct epoll_event e;
struct epoll_mtcontext ctx = { 0 };
signal(SIGUSR1, signal_handler);
ASSERT_EQ(socketpair(AF_UNIX, SOCK_STREAM, 0, &ctx.sfd[0]), 0);
ASSERT_EQ(socketpair(AF_UNIX, SOCK_STREAM, 0, &ctx.sfd[2]), 0);
ctx.efd[0] = epoll_create(1);
ASSERT_GE(ctx.efd[0], 0);
ctx.efd[1] = epoll_create(1);
ASSERT_GE(ctx.efd[1], 0);
ctx.efd[2] = epoll_create(1);
ASSERT_GE(ctx.efd[2], 0);
e.events = EPOLLIN;
ASSERT_EQ(epoll_ctl(ctx.efd[1], EPOLL_CTL_ADD, ctx.sfd[0], &e), 0);
e.events = EPOLLIN;
ASSERT_EQ(epoll_ctl(ctx.efd[2], EPOLL_CTL_ADD, ctx.sfd[2], &e), 0);
e.events = EPOLLIN;
ASSERT_EQ(epoll_ctl(ctx.efd[0], EPOLL_CTL_ADD, ctx.efd[1], &e), 0);
e.events = EPOLLIN;
ASSERT_EQ(epoll_ctl(ctx.efd[0], EPOLL_CTL_ADD, ctx.efd[2], &e), 0);
ctx.main = pthread_self();
ASSERT_EQ(pthread_create(&ctx.waiter, NULL, waiter_entry1ap, &ctx), 0);
ASSERT_EQ(pthread_create(&emitter, NULL, emitter_entry2, &ctx), 0);
if (epoll_wait(ctx.efd[0], &e, 1, -1) > 0)
__sync_fetch_and_add(&ctx.count, 1);
ASSERT_EQ(pthread_join(ctx.waiter, NULL), 0);
EXPECT_EQ(ctx.count, 2);
if (pthread_tryjoin_np(emitter, NULL) < 0) {
pthread_kill(emitter, SIGUSR1);
pthread_join(emitter, NULL);
}
close(ctx.efd[0]);
close(ctx.efd[1]);
close(ctx.efd[2]);
close(ctx.sfd[0]);
close(ctx.sfd[1]);
close(ctx.sfd[2]);
close(ctx.sfd[3]);
}
/*
* t0 t1
* (ew) \ / (p)
* e0
* (et) / \ (et)
* e1 e2
* (lt) | | (lt)
* s0 s2
*/
TEST(epoll56)
{
pthread_t emitter;
struct epoll_event e;
struct epoll_mtcontext ctx = { 0 };
signal(SIGUSR1, signal_handler);
ASSERT_EQ(socketpair(AF_UNIX, SOCK_STREAM, 0, &ctx.sfd[0]), 0);
ASSERT_EQ(socketpair(AF_UNIX, SOCK_STREAM, 0, &ctx.sfd[2]), 0);
ctx.efd[0] = epoll_create(1);
ASSERT_GE(ctx.efd[0], 0);
ctx.efd[1] = epoll_create(1);
ASSERT_GE(ctx.efd[1], 0);
ctx.efd[2] = epoll_create(1);
ASSERT_GE(ctx.efd[2], 0);
e.events = EPOLLIN;
ASSERT_EQ(epoll_ctl(ctx.efd[1], EPOLL_CTL_ADD, ctx.sfd[0], &e), 0);
e.events = EPOLLIN;
ASSERT_EQ(epoll_ctl(ctx.efd[2], EPOLL_CTL_ADD, ctx.sfd[2], &e), 0);
e.events = EPOLLIN | EPOLLET;
ASSERT_EQ(epoll_ctl(ctx.efd[0], EPOLL_CTL_ADD, ctx.efd[1], &e), 0);
e.events = EPOLLIN | EPOLLET;
ASSERT_EQ(epoll_ctl(ctx.efd[0], EPOLL_CTL_ADD, ctx.efd[2], &e), 0);
ctx.main = pthread_self();
ASSERT_EQ(pthread_create(&ctx.waiter, NULL, waiter_entry1ap, &ctx), 0);
ASSERT_EQ(pthread_create(&emitter, NULL, emitter_entry2, &ctx), 0);
if (epoll_wait(ctx.efd[0], &e, 1, -1) > 0)
__sync_fetch_and_add(&ctx.count, 1);
ASSERT_EQ(pthread_join(ctx.waiter, NULL), 0);
EXPECT_EQ(ctx.count, 2);
if (pthread_tryjoin_np(emitter, NULL) < 0) {
pthread_kill(emitter, SIGUSR1);
pthread_join(emitter, NULL);
}
close(ctx.efd[0]);
close(ctx.efd[1]);
close(ctx.efd[2]);
close(ctx.sfd[0]);
close(ctx.sfd[1]);
close(ctx.sfd[2]);
close(ctx.sfd[3]);
}
/*
* t0 t1
* (p) \ / (p)
* e0
* (lt) / \ (lt)
* e1 e2
* (lt) | | (lt)
* s0 s2
*/
TEST(epoll57)
{
pthread_t emitter;
struct pollfd pfd;
struct epoll_event e;
struct epoll_mtcontext ctx = { 0 };
signal(SIGUSR1, signal_handler);
ASSERT_EQ(socketpair(AF_UNIX, SOCK_STREAM, 0, &ctx.sfd[0]), 0);
ASSERT_EQ(socketpair(AF_UNIX, SOCK_STREAM, 0, &ctx.sfd[2]), 0);
ctx.efd[0] = epoll_create(1);
ASSERT_GE(ctx.efd[0], 0);
ctx.efd[1] = epoll_create(1);
ASSERT_GE(ctx.efd[1], 0);
ctx.efd[2] = epoll_create(1);
ASSERT_GE(ctx.efd[2], 0);
e.events = EPOLLIN;
ASSERT_EQ(epoll_ctl(ctx.efd[1], EPOLL_CTL_ADD, ctx.sfd[0], &e), 0);
e.events = EPOLLIN;
ASSERT_EQ(epoll_ctl(ctx.efd[2], EPOLL_CTL_ADD, ctx.sfd[2], &e), 0);
e.events = EPOLLIN;
ASSERT_EQ(epoll_ctl(ctx.efd[0], EPOLL_CTL_ADD, ctx.efd[1], &e), 0);
e.events = EPOLLIN;
ASSERT_EQ(epoll_ctl(ctx.efd[0], EPOLL_CTL_ADD, ctx.efd[2], &e), 0);
ctx.main = pthread_self();
ASSERT_EQ(pthread_create(&ctx.waiter, NULL, waiter_entry1ap, &ctx), 0);
ASSERT_EQ(pthread_create(&emitter, NULL, emitter_entry2, &ctx), 0);
pfd.fd = ctx.efd[0];
pfd.events = POLLIN;
if (poll(&pfd, 1, -1) > 0) {
if (epoll_wait(ctx.efd[0], &e, 1, 0) > 0)
__sync_fetch_and_add(&ctx.count, 1);
}
ASSERT_EQ(pthread_join(ctx.waiter, NULL), 0);
EXPECT_EQ(ctx.count, 2);
if (pthread_tryjoin_np(emitter, NULL) < 0) {
pthread_kill(emitter, SIGUSR1);
pthread_join(emitter, NULL);
}
close(ctx.efd[0]);
close(ctx.efd[1]);
close(ctx.efd[2]);
close(ctx.sfd[0]);
close(ctx.sfd[1]);
close(ctx.sfd[2]);
close(ctx.sfd[3]);
}
/*
* t0 t1
* (p) \ / (p)
* e0
* (et) / \ (et)
* e1 e2
* (lt) | | (lt)
* s0 s2
*/
TEST(epoll58)
{
pthread_t emitter;
struct pollfd pfd;
struct epoll_event e;
struct epoll_mtcontext ctx = { 0 };
signal(SIGUSR1, signal_handler);
ASSERT_EQ(socketpair(AF_UNIX, SOCK_STREAM, 0, &ctx.sfd[0]), 0);
ASSERT_EQ(socketpair(AF_UNIX, SOCK_STREAM, 0, &ctx.sfd[2]), 0);
ctx.efd[0] = epoll_create(1);
ASSERT_GE(ctx.efd[0], 0);
ctx.efd[1] = epoll_create(1);
ASSERT_GE(ctx.efd[1], 0);
ctx.efd[2] = epoll_create(1);
ASSERT_GE(ctx.efd[2], 0);
e.events = EPOLLIN;
ASSERT_EQ(epoll_ctl(ctx.efd[1], EPOLL_CTL_ADD, ctx.sfd[0], &e), 0);
e.events = EPOLLIN;
ASSERT_EQ(epoll_ctl(ctx.efd[2], EPOLL_CTL_ADD, ctx.sfd[2], &e), 0);
e.events = EPOLLIN | EPOLLET;
ASSERT_EQ(epoll_ctl(ctx.efd[0], EPOLL_CTL_ADD, ctx.efd[1], &e), 0);
e.events = EPOLLIN | EPOLLET;
ASSERT_EQ(epoll_ctl(ctx.efd[0], EPOLL_CTL_ADD, ctx.efd[2], &e), 0);
ctx.main = pthread_self();
ASSERT_EQ(pthread_create(&ctx.waiter, NULL, waiter_entry1ap, &ctx), 0);
ASSERT_EQ(pthread_create(&emitter, NULL, emitter_entry2, &ctx), 0);
pfd.fd = ctx.efd[0];
pfd.events = POLLIN;
if (poll(&pfd, 1, -1) > 0) {
if (epoll_wait(ctx.efd[0], &e, 1, 0) > 0)
__sync_fetch_and_add(&ctx.count, 1);
}
ASSERT_EQ(pthread_join(ctx.waiter, NULL), 0);
EXPECT_EQ(ctx.count, 2);
if (pthread_tryjoin_np(emitter, NULL) < 0) {
pthread_kill(emitter, SIGUSR1);
pthread_join(emitter, NULL);
}
close(ctx.efd[0]);
close(ctx.efd[1]);
close(ctx.efd[2]);
close(ctx.sfd[0]);
close(ctx.sfd[1]);
close(ctx.sfd[2]);
close(ctx.sfd[3]);
}
static void *epoll59_thread(void *ctx_)
{
struct epoll_mtcontext *ctx = ctx_;
struct epoll_event e;
int i;
for (i = 0; i < 100000; i++) {
while (ctx->count == 0)
;
e.events = EPOLLIN | EPOLLERR | EPOLLET;
epoll_ctl(ctx->efd[0], EPOLL_CTL_MOD, ctx->sfd[0], &e);
ctx->count = 0;
}
return NULL;
}
/*
* t0
* (p) \
* e0
* (et) /
* e0
*
* Based on https://bugzilla.kernel.org/show_bug.cgi?id=205933
*/
TEST(epoll59)
{
pthread_t emitter;
struct pollfd pfd;
struct epoll_event e;
struct epoll_mtcontext ctx = { 0 };
int i, ret;
signal(SIGUSR1, signal_handler);
ctx.efd[0] = epoll_create1(0);
ASSERT_GE(ctx.efd[0], 0);
ctx.sfd[0] = eventfd(1, 0);
ASSERT_GE(ctx.sfd[0], 0);
e.events = EPOLLIN | EPOLLERR | EPOLLET;
ASSERT_EQ(epoll_ctl(ctx.efd[0], EPOLL_CTL_ADD, ctx.sfd[0], &e), 0);
ASSERT_EQ(pthread_create(&emitter, NULL, epoll59_thread, &ctx), 0);
for (i = 0; i < 100000; i++) {
ret = epoll_wait(ctx.efd[0], &e, 1, 1000);
ASSERT_GT(ret, 0);
while (ctx.count != 0)
;
ctx.count = 1;
}
if (pthread_tryjoin_np(emitter, NULL) < 0) {
pthread_kill(emitter, SIGUSR1);
pthread_join(emitter, NULL);
}
close(ctx.efd[0]);
close(ctx.sfd[0]);
}
enum {
EPOLL60_EVENTS_NR = 10,
};
struct epoll60_ctx {
volatile int stopped;
int ready;
int waiters;
int epfd;
int evfd[EPOLL60_EVENTS_NR];
};
static void *epoll60_wait_thread(void *ctx_)
{
struct epoll60_ctx *ctx = ctx_;
struct epoll_event e;
sigset_t sigmask;
uint64_t v;
int ret;
/* Block SIGUSR1 */
sigemptyset(&sigmask);
sigaddset(&sigmask, SIGUSR1);
sigprocmask(SIG_SETMASK, &sigmask, NULL);
/* Prepare empty mask for epoll_pwait() */
sigemptyset(&sigmask);
while (!ctx->stopped) {
/* Mark we are ready */
__atomic_fetch_add(&ctx->ready, 1, __ATOMIC_ACQUIRE);
/* Start when all are ready */
while (__atomic_load_n(&ctx->ready, __ATOMIC_ACQUIRE) &&
!ctx->stopped);
/* Account this waiter */
__atomic_fetch_add(&ctx->waiters, 1, __ATOMIC_ACQUIRE);
ret = epoll_pwait(ctx->epfd, &e, 1, 2000, &sigmask);
if (ret != 1) {
/* We expect only signal delivery on stop */
assert(ret < 0 && errno == EINTR && "Lost wakeup!\n");
assert(ctx->stopped);
break;
}
ret = read(e.data.fd, &v, sizeof(v));
/* Since we are on ET mode, thus each thread gets its own fd. */
assert(ret == sizeof(v));
__atomic_fetch_sub(&ctx->waiters, 1, __ATOMIC_RELEASE);
}
return NULL;
}
static inline unsigned long long msecs(void)
{
struct timespec ts;
unsigned long long msecs;
clock_gettime(CLOCK_REALTIME, &ts);
msecs = ts.tv_sec * 1000ull;
msecs += ts.tv_nsec / 1000000ull;
return msecs;
}
static inline int count_waiters(struct epoll60_ctx *ctx)
{
return __atomic_load_n(&ctx->waiters, __ATOMIC_ACQUIRE);
}
TEST(epoll60)
{
struct epoll60_ctx ctx = { 0 };
pthread_t waiters[ARRAY_SIZE(ctx.evfd)];
struct epoll_event e;
int i, n, ret;
signal(SIGUSR1, signal_handler);
ctx.epfd = epoll_create1(0);
ASSERT_GE(ctx.epfd, 0);
/* Create event fds */
for (i = 0; i < ARRAY_SIZE(ctx.evfd); i++) {
ctx.evfd[i] = eventfd(0, EFD_NONBLOCK);
ASSERT_GE(ctx.evfd[i], 0);
e.events = EPOLLIN | EPOLLET;
e.data.fd = ctx.evfd[i];
ASSERT_EQ(epoll_ctl(ctx.epfd, EPOLL_CTL_ADD, ctx.evfd[i], &e), 0);
}
/* Create waiter threads */
for (i = 0; i < ARRAY_SIZE(waiters); i++)
ASSERT_EQ(pthread_create(&waiters[i], NULL,
epoll60_wait_thread, &ctx), 0);
for (i = 0; i < 300; i++) {
uint64_t v = 1, ms;
/* Wait for all to be ready */
while (__atomic_load_n(&ctx.ready, __ATOMIC_ACQUIRE) !=
ARRAY_SIZE(ctx.evfd))
;
/* Steady, go */
__atomic_fetch_sub(&ctx.ready, ARRAY_SIZE(ctx.evfd),
__ATOMIC_ACQUIRE);
/* Wait all have gone to kernel */
while (count_waiters(&ctx) != ARRAY_SIZE(ctx.evfd))
;
/* 1ms should be enough to schedule away */
usleep(1000);
/* Quickly signal all handles at once */
for (n = 0; n < ARRAY_SIZE(ctx.evfd); n++) {
ret = write(ctx.evfd[n], &v, sizeof(v));
ASSERT_EQ(ret, sizeof(v));
}
/* Busy loop for 1s and wait for all waiters to wake up */
ms = msecs();
while (count_waiters(&ctx) && msecs() < ms + 1000)
;
ASSERT_EQ(count_waiters(&ctx), 0);
}
ctx.stopped = 1;
/* Stop waiters */
for (i = 0; i < ARRAY_SIZE(waiters); i++)
ret = pthread_kill(waiters[i], SIGUSR1);
for (i = 0; i < ARRAY_SIZE(waiters); i++)
pthread_join(waiters[i], NULL);
for (i = 0; i < ARRAY_SIZE(waiters); i++)
close(ctx.evfd[i]);
close(ctx.epfd);
}
struct epoll61_ctx {
int epfd;
int evfd;
};
static void *epoll61_write_eventfd(void *ctx_)
{
struct epoll61_ctx *ctx = ctx_;
int64_t l = 1;
usleep(10950);
write(ctx->evfd, &l, sizeof(l));
return NULL;
}
static void *epoll61_epoll_with_timeout(void *ctx_)
{
struct epoll61_ctx *ctx = ctx_;
struct epoll_event events[1];
int n;
n = epoll_wait(ctx->epfd, events, 1, 11);
/*
* If epoll returned the eventfd, write on the eventfd to wake up the
* blocking poller.
*/
if (n == 1) {
int64_t l = 1;
write(ctx->evfd, &l, sizeof(l));
}
return NULL;
}
static void *epoll61_blocking_epoll(void *ctx_)
{
struct epoll61_ctx *ctx = ctx_;
struct epoll_event events[1];
epoll_wait(ctx->epfd, events, 1, -1);
return NULL;
}
TEST(epoll61)
{
struct epoll61_ctx ctx;
struct epoll_event ev;
int i, r;
ctx.epfd = epoll_create1(0);
ASSERT_GE(ctx.epfd, 0);
ctx.evfd = eventfd(0, EFD_NONBLOCK);
ASSERT_GE(ctx.evfd, 0);
ev.events = EPOLLIN | EPOLLET | EPOLLERR | EPOLLHUP;
ev.data.ptr = NULL;
r = epoll_ctl(ctx.epfd, EPOLL_CTL_ADD, ctx.evfd, &ev);
ASSERT_EQ(r, 0);
/*
* We are testing a race. Repeat the test case 1000 times to make it
* more likely to fail in case of a bug.
*/
for (i = 0; i < 1000; i++) {
pthread_t threads[3];
int n;
/*
* Start 3 threads:
* Thread 1 sleeps for 10.9ms and writes to the evenfd.
* Thread 2 calls epoll with a timeout of 11ms.
* Thread 3 calls epoll with a timeout of -1.
*
* The eventfd write by Thread 1 should either wakeup Thread 2
* or Thread 3. If it wakes up Thread 2, Thread 2 writes on the
* eventfd to wake up Thread 3.
*
* If no events are missed, all three threads should eventually
* be joinable.
*/
ASSERT_EQ(pthread_create(&threads[0], NULL,
epoll61_write_eventfd, &ctx), 0);
ASSERT_EQ(pthread_create(&threads[1], NULL,
epoll61_epoll_with_timeout, &ctx), 0);
ASSERT_EQ(pthread_create(&threads[2], NULL,
epoll61_blocking_epoll, &ctx), 0);
for (n = 0; n < ARRAY_SIZE(threads); ++n)
ASSERT_EQ(pthread_join(threads[n], NULL), 0);
}
close(ctx.epfd);
close(ctx.evfd);
}
/* Equivalent to basic test epoll1, but exercising epoll_pwait2. */
TEST(epoll62)
{
int efd;
int sfd[2];
struct epoll_event e;
ASSERT_EQ(socketpair(AF_UNIX, SOCK_STREAM, 0, sfd), 0);
efd = epoll_create(1);
ASSERT_GE(efd, 0);
e.events = EPOLLIN;
ASSERT_EQ(epoll_ctl(efd, EPOLL_CTL_ADD, sfd[0], &e), 0);
ASSERT_EQ(write(sfd[1], "w", 1), 1);
EXPECT_EQ(sys_epoll_pwait2(efd, &e, 1, NULL, NULL, 0), 1);
EXPECT_EQ(sys_epoll_pwait2(efd, &e, 1, NULL, NULL, 0), 1);
close(efd);
close(sfd[0]);
close(sfd[1]);
}
/* Epoll_pwait2 basic timeout test. */
TEST(epoll63)
{
const int cfg_delay_ms = 10;
unsigned long long tdiff;
struct __kernel_timespec ts;
int efd;
int sfd[2];
struct epoll_event e;
ASSERT_EQ(socketpair(AF_UNIX, SOCK_STREAM, 0, sfd), 0);
efd = epoll_create(1);
ASSERT_GE(efd, 0);
e.events = EPOLLIN;
ASSERT_EQ(epoll_ctl(efd, EPOLL_CTL_ADD, sfd[0], &e), 0);
ts.tv_sec = 0;
ts.tv_nsec = cfg_delay_ms * 1000 * 1000;
tdiff = msecs();
EXPECT_EQ(sys_epoll_pwait2(efd, &e, 1, &ts, NULL, 0), 0);
tdiff = msecs() - tdiff;
EXPECT_GE(tdiff, cfg_delay_ms);
close(efd);
close(sfd[0]);
close(sfd[1]);
}
/*
* t0 t1
* (ew) \ / (ew)
* e0
* | (lt)
* s0
*/
TEST(epoll64)
{
pthread_t waiter[2];
struct epoll_event e;
struct epoll_mtcontext ctx = { 0 };
signal(SIGUSR1, signal_handler);
ASSERT_EQ(socketpair(AF_UNIX, SOCK_STREAM, 0, ctx.sfd), 0);
ctx.efd[0] = epoll_create(1);
ASSERT_GE(ctx.efd[0], 0);
e.events = EPOLLIN;
ASSERT_EQ(epoll_ctl(ctx.efd[0], EPOLL_CTL_ADD, ctx.sfd[0], &e), 0);
/*
* main will act as the emitter once both waiter threads are
* blocked and expects to both be awoken upon the ready event.
*/
ctx.main = pthread_self();
ASSERT_EQ(pthread_create(&waiter[0], NULL, waiter_entry1a, &ctx), 0);
ASSERT_EQ(pthread_create(&waiter[1], NULL, waiter_entry1a, &ctx), 0);
usleep(100000);
ASSERT_EQ(write(ctx.sfd[1], "w", 1), 1);
ASSERT_EQ(pthread_join(waiter[0], NULL), 0);
ASSERT_EQ(pthread_join(waiter[1], NULL), 0);
EXPECT_EQ(ctx.count, 2);
close(ctx.efd[0]);
close(ctx.sfd[0]);
close(ctx.sfd[1]);
}
TEST_HARNESS_MAIN