mirror of
https://github.com/jart/cosmopolitan.git
synced 2025-02-01 03:53:33 +00:00
33d280c8ba
- Blocking read operations on the Windows Console can now EINTR - Blocking read operations on Windows pipes now EINTR more reliably - setitimer() will no longer be inherited across fork() on Windows - It's now possible to use ECHO when the console is in raw mode - The ECHOCTL flag now works correctly on the Windows Console - The ICRNL flag now works correctly on the Windows Console - pread() and pwrite() will now raise ESPIPE on Windows - Opening /dev/tty on Windows is improved (untested) - Overlapped I/O is now implemented in a better way
92 lines
4 KiB
C
92 lines
4 KiB
C
/*-*- mode:c;indent-tabs-mode:nil;c-basic-offset:2;tab-width:8;coding:utf-8 -*-│
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│vi: set net ft=c ts=2 sts=2 sw=2 fenc=utf-8 :vi│
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╞══════════════════════════════════════════════════════════════════════════════╡
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│ Copyright 2021 Justine Alexandra Roberts Tunney │
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│ │
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│ Permission to use, copy, modify, and/or distribute this software for │
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│ any purpose with or without fee is hereby granted, provided that the │
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│ above copyright notice and this permission notice appear in all copies. │
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│ │
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│ THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL │
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│ WARRANTIES WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED │
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│ WARRANTIES OF MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE │
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│ AUTHOR BE LIABLE FOR ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL │
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│ DAMAGES OR ANY DAMAGES WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR │
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│ PROFITS, WHETHER IN AN ACTION OF CONTRACT, NEGLIGENCE OR OTHER │
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│ TORTIOUS ACTION, ARISING OUT OF OR IN CONNECTION WITH THE USE OR │
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│ PERFORMANCE OF THIS SOFTWARE. │
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╚─────────────────────────────────────────────────────────────────────────────*/
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#include "libc/assert.h"
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#include "libc/calls/calls.h"
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#include "libc/calls/cp.internal.h"
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#include "libc/calls/internal.h"
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#include "libc/calls/struct/iovec.h"
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#include "libc/calls/struct/iovec.internal.h"
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#include "libc/calls/struct/sigaction.h"
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#include "libc/calls/syscall-sysv.internal.h"
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#include "libc/dce.h"
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#include "libc/errno.h"
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#include "libc/sock/internal.h"
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#include "libc/sysv/consts/nr.h"
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#include "libc/sysv/consts/o.h"
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#include "libc/sysv/consts/sig.h"
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#include "libc/testlib/ezbench.h"
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#include "libc/testlib/testlib.h"
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char testlib_enable_tmp_setup_teardown;
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TEST(read, eof) {
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char b[8] = "hello";
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ASSERT_SYS(0, 3, creat("foo", 0644));
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ASSERT_SYS(0, 4, open("foo", O_RDONLY));
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ASSERT_SYS(0, 0, read(4, b, 8));
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ASSERT_SYS(0, 8, write(3, b, 8));
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ASSERT_SYS(0, 8, read(4, b, 8));
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ASSERT_SYS(0, 0, read(4, b, 8));
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ASSERT_SYS(0, 0, close(4));
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ASSERT_SYS(0, 0, close(3));
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}
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volatile bool got_sigalrm;
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void OnSigalrm(int sig) {
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got_sigalrm = true;
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}
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TEST(read_pipe, canBeInterruptedByAlarm) {
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int fds[2];
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char buf[1];
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struct sigaction sa;
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alarm(1);
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sa.sa_flags = 0;
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sa.sa_handler = OnSigalrm;
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sigemptyset(&sa.sa_mask);
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sigaction(SIGALRM, &sa, 0);
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ASSERT_SYS(0, 0, pipe(fds));
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ASSERT_SYS(ESPIPE, -1, pread(fds[0], buf, 1, 777));
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ASSERT_SYS(EINTR, -1, read(fds[0], buf, 1));
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ASSERT_TRUE(got_sigalrm);
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signal(SIGALRM, SIG_DFL);
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close(fds[1]);
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close(fds[0]);
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}
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////////////////////////////////////////////////////////////////////////////////
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BENCH(read, bench) {
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char buf[16];
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BEGIN_CANCELLATION_POINT;
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ASSERT_SYS(0, 3, open("/dev/zero", O_RDONLY));
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EZBENCH2("read", donothing, read(3, buf, 5));
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EZBENCH2("pread", donothing, pread(3, buf, 5, 0));
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EZBENCH2("readv₁", donothing, readv(3, &(struct iovec){buf, 5}, 1));
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EZBENCH2("readv₂", donothing,
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readv(3, (struct iovec[]){{buf, 1}, {buf + 1, 4}}, 2));
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EZBENCH2("preadv₁", donothing, preadv(3, &(struct iovec){buf, 5}, 1, 0));
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EZBENCH2("preadv₂", donothing,
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preadv(3, (struct iovec[]){{buf, 1}, {buf + 1, 4}}, 2, 0));
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EZBENCH2("sys_read", donothing, sys_read(3, buf, 5));
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EZBENCH2("sys_readv", donothing, sys_readv(3, &(struct iovec){buf, 5}, 1));
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ASSERT_SYS(0, 0, close(3));
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END_CANCELLATION_POINT;
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}
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