mirror of
https://github.com/jart/cosmopolitan.git
synced 2025-02-01 03:53:33 +00:00
1d4eb08fa1
This change introduces new tests for `O_NONBLOCK` and `SOCK_NONBLOCK` to
confirm that non-blocking i/o is now working on all supported platforms,
including Windows. For example, you can now say on Windows, MacOS, etc.:
socket(AF_INET, SOCK_STREAM | SOCK_NONBLOCK, IPPROTO_TCP);
To create a non-blocking IPv4 TCP socket. Or you can enable non-blocking
i/o on an existing socket / pipe / etc. file descriptor by calling fcntl
fcntl(fd, F_SETFL, fcntl(fd, F_GETFL) | O_NONBLOCK);
This functionality is polyfilled on older Linux kernels too, e.g. RHEL5.
Now that fcntl() support is much better the FIOCLEX / FIONCLEX polyfills
for ioctl() have been removed since they're ugly non-POSIX diameond APIs
This change fixes a weakness in kprintf() that was causing Windows trace
tools to frequently crash.
127 lines
5.5 KiB
C
127 lines
5.5 KiB
C
/*-*- mode:c;indent-tabs-mode:nil;c-basic-offset:2;tab-width:8;coding:utf-8 -*-│
|
|
│vi: set net ft=c ts=2 sts=2 sw=2 fenc=utf-8 :vi│
|
|
╞══════════════════════════════════════════════════════════════════════════════╡
|
|
│ Copyright 2023 Justine Alexandra Roberts Tunney │
|
|
│ │
|
|
│ Permission to use, copy, modify, and/or distribute this software for │
|
|
│ any purpose with or without fee is hereby granted, provided that the │
|
|
│ above copyright notice and this permission notice appear in all copies. │
|
|
│ │
|
|
│ THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL │
|
|
│ WARRANTIES WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED │
|
|
│ WARRANTIES OF MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE │
|
|
│ AUTHOR BE LIABLE FOR ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL │
|
|
│ DAMAGES OR ANY DAMAGES WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR │
|
|
│ PROFITS, WHETHER IN AN ACTION OF CONTRACT, NEGLIGENCE OR OTHER │
|
|
│ TORTIOUS ACTION, ARISING OUT OF OR IN CONNECTION WITH THE USE OR │
|
|
│ PERFORMANCE OF THIS SOFTWARE. │
|
|
╚─────────────────────────────────────────────────────────────────────────────*/
|
|
#include "libc/calls/calls.h"
|
|
#include "libc/errno.h"
|
|
#include "libc/intrin/strace.internal.h"
|
|
#include "libc/runtime/runtime.h"
|
|
#include "libc/runtime/syslib.internal.h"
|
|
#include "libc/sock/sock.h"
|
|
#include "libc/sock/struct/sockaddr.h"
|
|
#include "libc/sysv/consts/af.h"
|
|
#include "libc/sysv/consts/f.h"
|
|
#include "libc/sysv/consts/ipproto.h"
|
|
#include "libc/sysv/consts/limits.h"
|
|
#include "libc/sysv/consts/o.h"
|
|
#include "libc/sysv/consts/sock.h"
|
|
#include "libc/testlib/subprocess.h"
|
|
#include "libc/testlib/testlib.h"
|
|
#include "libc/thread/thread.h"
|
|
|
|
TEST(O_NONBLOCK, canBeSetBySocket_toMakeListenNonBlocking) {
|
|
int ws, pid;
|
|
char buf[16] = {0};
|
|
int64_t inoffset;
|
|
uint32_t addrsize = sizeof(struct sockaddr_in);
|
|
struct sockaddr_in addr = {
|
|
.sin_family = AF_INET,
|
|
.sin_addr.s_addr = htonl(0x7f000001),
|
|
};
|
|
pthread_spinlock_t *phaser = _mapshared(4096);
|
|
EXPECT_EQ(0, pthread_spin_lock(phaser + 0));
|
|
EXPECT_EQ(0, pthread_spin_lock(phaser + 1));
|
|
ASSERT_SYS(0, 3, socket(AF_INET, SOCK_STREAM | SOCK_NONBLOCK, IPPROTO_TCP));
|
|
ASSERT_SYS(0, 0, bind(3, (struct sockaddr *)&addr, sizeof(addr)));
|
|
ASSERT_SYS(0, 0, getsockname(3, (struct sockaddr *)&addr, &addrsize));
|
|
ASSERT_SYS(0, 0, listen(3, SOMAXCONN));
|
|
SPAWN(fork);
|
|
ASSERT_SYS(EAGAIN, -1, accept(3, (struct sockaddr *)&addr, &addrsize));
|
|
EXPECT_EQ(0, pthread_spin_unlock(phaser + 0));
|
|
for (;;) {
|
|
int e = errno;
|
|
int fd = accept(3, (struct sockaddr *)&addr, &addrsize);
|
|
if (fd == -1 && errno == EAGAIN) {
|
|
errno = e;
|
|
usleep(1000);
|
|
continue;
|
|
}
|
|
ASSERT_SYS(0, 4, fd);
|
|
break;
|
|
}
|
|
ASSERT_SYS(0, 5, send(4, "hello", 5, 0));
|
|
EXPECT_EQ(0, pthread_spin_unlock(phaser + 1));
|
|
EXPECT_SYS(0, 0, close(4));
|
|
EXPECT_SYS(0, 0, close(3));
|
|
PARENT();
|
|
EXPECT_SYS(0, 0, close(3));
|
|
ASSERT_SYS(0, 3, socket(AF_INET, SOCK_STREAM, IPPROTO_TCP));
|
|
EXPECT_EQ(0, pthread_spin_lock(phaser + 0));
|
|
ASSERT_SYS(0, 0, connect(3, (struct sockaddr *)&addr, sizeof(addr)));
|
|
EXPECT_EQ(0, pthread_spin_lock(phaser + 1));
|
|
EXPECT_SYS(0, 5, read(3, buf, 16));
|
|
EXPECT_STREQ("hello", buf);
|
|
EXPECT_SYS(0, 0, close(3));
|
|
WAIT(exit, 0);
|
|
munmap(phaser, 4096);
|
|
}
|
|
|
|
TEST(O_NONBLOCK, canBeTunedWithFcntl_toMakeReadNonBlocking) {
|
|
int ws, pid;
|
|
char buf[16] = {0};
|
|
int64_t inoffset;
|
|
uint32_t addrsize = sizeof(struct sockaddr_in);
|
|
struct sockaddr_in addr = {
|
|
.sin_family = AF_INET,
|
|
.sin_addr.s_addr = htonl(0x7f000001),
|
|
};
|
|
pthread_spinlock_t *phaser = _mapshared(4096);
|
|
EXPECT_EQ(0, pthread_spin_lock(phaser + 0));
|
|
EXPECT_EQ(0, pthread_spin_lock(phaser + 1));
|
|
ASSERT_SYS(0, 3, socket(AF_INET, SOCK_STREAM, IPPROTO_TCP));
|
|
ASSERT_SYS(0, 0, bind(3, (struct sockaddr *)&addr, sizeof(addr)));
|
|
ASSERT_SYS(0, 0, getsockname(3, (struct sockaddr *)&addr, &addrsize));
|
|
ASSERT_SYS(0, 0, listen(3, SOMAXCONN));
|
|
SPAWN(fork);
|
|
ASSERT_SYS(0, 4, accept(3, (struct sockaddr *)&addr, &addrsize));
|
|
EXPECT_EQ(0, pthread_spin_lock(phaser + 0));
|
|
ASSERT_SYS(0, 5, send(4, "hello", 5, 0));
|
|
EXPECT_EQ(0, pthread_spin_lock(phaser + 1));
|
|
EXPECT_SYS(0, 0, close(4));
|
|
EXPECT_SYS(0, 0, close(3));
|
|
PARENT();
|
|
EXPECT_SYS(0, 0, close(3));
|
|
ASSERT_SYS(0, 3, socket(AF_INET, SOCK_STREAM, IPPROTO_TCP));
|
|
ASSERT_SYS(0, 0, connect(3, (struct sockaddr *)&addr, sizeof(addr)));
|
|
ASSERT_SYS(0, 0, fcntl(3, F_SETFL, O_NONBLOCK));
|
|
ASSERT_SYS(EAGAIN, -1, read(3, buf, 16));
|
|
EXPECT_EQ(0, pthread_spin_unlock(phaser + 0));
|
|
TryAgain:
|
|
int e = errno;
|
|
ssize_t rc = read(3, buf, 16);
|
|
if (rc == -1 && errno == EAGAIN) {
|
|
errno = e;
|
|
usleep(1000);
|
|
goto TryAgain;
|
|
}
|
|
EXPECT_SYS(0, 5, rc);
|
|
EXPECT_STREQ("hello", buf);
|
|
EXPECT_EQ(0, pthread_spin_unlock(phaser + 1));
|
|
EXPECT_SYS(0, 0, close(3));
|
|
WAIT(exit, 0);
|
|
munmap(phaser, 4096);
|
|
}
|