mirror of
https://github.com/jart/cosmopolitan.git
synced 2025-02-01 12:03:41 +00:00
6f7d0cb1c3
This makes breaking changes to add underscores to many non-standard function names provided by the c library. MODE=tiny is now tinier and we now use smaller locks that are better for tiny apps in this mode. Some headers have been renamed to be in the same folder as the build package, so it'll be easier to know which build dependency is needed. Certain old misguided interfaces have been removed. Intel intrinsics headers are now listed in libc/isystem (but not in the amalgamation) to help further improve open source compatibility. Header complexity has also been reduced. Lastly, more shell scripts are now available.
180 lines
6.7 KiB
C
180 lines
6.7 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 2020 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/calls/calls.h"
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#include "libc/calls/pledge.h"
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#include "libc/calls/struct/sigaction.h"
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#include "libc/dce.h"
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#include "libc/errno.h"
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#include "libc/log/libfatal.internal.h"
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#include "libc/mem/gc.h"
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#include "libc/nexgen32e/rdtsc.h"
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#include "libc/nexgen32e/rdtscp.h"
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#include "libc/nt/synchronization.h"
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#include "libc/sock/sock.h"
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#include "libc/sock/struct/pollfd.h"
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#include "libc/sock/struct/sockaddr.h"
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#include "libc/sysv/consts/af.h"
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#include "libc/sysv/consts/inaddr.h"
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#include "libc/sysv/consts/ipproto.h"
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#include "libc/sysv/consts/poll.h"
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#include "libc/sysv/consts/sig.h"
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#include "libc/sysv/consts/sock.h"
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#include "libc/testlib/testlib.h"
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#include "libc/x/x.h"
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#include "libc/x/xasprintf.h"
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#include "third_party/chibicc/test/test.h"
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#include "tool/decode/lib/flagger.h"
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#include "tool/decode/lib/pollnames.h"
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bool gotsig;
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void SetUpOnce(void) {
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__pledge_mode = PLEDGE_PENALTY_KILL_PROCESS | PLEDGE_STDERR_LOGGING;
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ASSERT_SYS(0, 0, pledge("stdio proc inet", 0));
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}
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void SetUp(void) {
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gotsig = false;
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}
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void OnSig(int sig) {
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gotsig = true;
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}
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dontdiscard char *FormatPollFd(struct pollfd p[2]) {
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return xasprintf("fd:%d revents:%s\n"
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"fd:%d revents:%s\n",
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p[0].fd, _gc(RecreateFlags(kPollNames, p[0].revents)),
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p[1].fd, _gc(RecreateFlags(kPollNames, p[1].revents)));
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}
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TEST(poll, allZero_doesNothingPrettyMuch) {
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EXPECT_SYS(0, 0, poll(0, 0, 0));
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}
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TEST(ppoll, weCanProveItChecksForSignals) {
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if (IsXnu()) return;
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if (IsNetbsd()) return;
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int pipefds[2];
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sigset_t set, old;
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struct sigaction oldss;
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struct sigaction sa = {.sa_handler = OnSig};
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EXPECT_SYS(0, 0, pipe(pipefds));
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struct pollfd fds[] = {{pipefds[0], POLLIN}};
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ASSERT_SYS(0, 0, sigaction(SIGUSR1, &sa, &oldss));
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ASSERT_SYS(0, 0, sigfillset(&set));
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ASSERT_SYS(0, 0, sigprocmask(SIG_SETMASK, &set, &old));
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EXPECT_SYS(0, 0, kill(getpid(), SIGUSR1));
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EXPECT_FALSE(gotsig);
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EXPECT_SYS(EINTR, -1, ppoll(fds, 1, 0, &old));
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EXPECT_TRUE(gotsig);
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EXPECT_SYS(0, 0, sigprocmask(SIG_SETMASK, &old, 0));
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EXPECT_SYS(0, 0, sigaction(SIGUSR1, &oldss, 0));
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EXPECT_SYS(0, 0, close(pipefds[0]));
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EXPECT_SYS(0, 0, close(pipefds[1]));
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}
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TEST(poll, testNegativeOneFd_isIgnored) {
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ASSERT_SYS(0, 3, socket(AF_INET, SOCK_STREAM, IPPROTO_TCP));
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struct sockaddr_in addr = {AF_INET, 0, {htonl(INADDR_LOOPBACK)}};
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ASSERT_SYS(0, 0, bind(3, &addr, sizeof(addr)));
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ASSERT_SYS(0, 0, listen(3, 10));
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struct pollfd fds[] = {{-1}, {3}};
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EXPECT_SYS(0, 0, poll(fds, ARRAYLEN(fds), 1));
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EXPECT_STREQ("fd:-1 revents:0\n"
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"fd:3 revents:0\n",
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_gc(FormatPollFd(&fds[0])));
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ASSERT_SYS(0, 0, close(3));
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}
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TEST(poll, pipe_noInput) {
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// we can't test stdin here since
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// we can't assume it isn't /dev/null
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// since nil is always pollin as eof
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int pipefds[2];
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EXPECT_SYS(0, 0, pipe(pipefds));
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struct pollfd fds[] = {{pipefds[0], POLLIN}};
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EXPECT_SYS(0, 0, poll(fds, 1, 0));
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EXPECT_EQ(0, fds[0].revents);
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EXPECT_SYS(0, 0, close(pipefds[0]));
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EXPECT_SYS(0, 0, close(pipefds[1]));
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}
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TEST(poll, pipe_hasInputFromSameProcess) {
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char buf[2];
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int pipefds[2];
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EXPECT_SYS(0, 0, pipe(pipefds));
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struct pollfd fds[] = {{pipefds[0], POLLIN}};
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EXPECT_SYS(0, 2, write(pipefds[1], "hi", 2));
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EXPECT_SYS(0, 1, poll(fds, 1, 1000)); // flake nt!
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EXPECT_EQ(POLLIN, fds[0].revents);
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EXPECT_SYS(0, 2, read(pipefds[0], buf, 2));
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EXPECT_SYS(0, 0, poll(fds, 1, 0));
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EXPECT_SYS(0, 0, close(pipefds[0]));
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EXPECT_SYS(0, 0, close(pipefds[1]));
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}
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TEST(poll, pipe_hasInput) {
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char buf[2];
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sigset_t chldmask, savemask;
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int ws, pid, sync[2], pipefds[2];
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EXPECT_EQ(0, sigemptyset(&chldmask));
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EXPECT_EQ(0, sigaddset(&chldmask, SIGCHLD));
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EXPECT_EQ(0, sigprocmask(SIG_BLOCK, &chldmask, &savemask));
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EXPECT_SYS(0, 0, pipe(pipefds));
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EXPECT_NE(-1, (pid = fork()));
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if (!pid) {
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EXPECT_SYS(0, 0, close(pipefds[0]));
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EXPECT_SYS(0, 2, write(pipefds[1], "hi", 2));
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EXPECT_SYS(0, 2, write(pipefds[1], "hi", 2));
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EXPECT_SYS(0, 0, close(pipefds[1]));
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_Exit(0);
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}
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EXPECT_SYS(0, 0, close(pipefds[1]));
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EXPECT_SYS(0, 2, read(pipefds[0], buf, 2));
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struct pollfd fds[] = {{pipefds[0], POLLIN}};
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EXPECT_SYS(0, 1, poll(fds, 1, -1));
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EXPECT_EQ(POLLIN, fds[0].revents & POLLIN);
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EXPECT_SYS(0, 2, read(pipefds[0], buf, 2));
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EXPECT_SYS(0, 0, close(pipefds[0]));
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ASSERT_NE(-1, wait(&ws));
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EXPECT_TRUE(WIFEXITED(ws));
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EXPECT_EQ(0, WEXITSTATUS(ws));
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EXPECT_EQ(0, sigprocmask(SIG_SETMASK, &savemask, 0));
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}
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#if 0
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TEST(poll, emptyFds_becomesSleep) {
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// timing tests w/o mocks are always the hardest
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int64_t a, b, c, p, i = 0;
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do {
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if (++i == 5) {
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kprintf("too much cpu churn%n");
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return;
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}
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p = TSC_AUX_CORE(rdpid());
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a = rdtsc();
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EXPECT_SYS(0, 0, poll(0, 0, 5));
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b = rdtsc();
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EXPECT_SYS(0, 0, poll(0, 0, 50));
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c = rdtsc();
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} while (TSC_AUX_CORE(rdpid()) != p);
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EXPECT_LT((b - a) * 2, c - b);
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}
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#endif
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