mirror of
https://github.com/jart/cosmopolitan.git
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6e6fc38935
Commit bc6c183 introduced a bunch of discrepancies between what files
look like in the repo and what clang-format says they should look like.
However, there were already a few discrepancies prior to that. Most of
these discrepancies seemed to be unintentional, but a few of them were
load-bearing (e.g., a #include that violated header ordering needing
something to have been #defined by a 'later' #include.)
I opted to take what I hope is a relatively smooth-brained approach: I
reverted the .clang-format change, ran clang-format on the whole repo,
reapplied the .clang-format change, reran clang-format again, and then
reverted the commit that contained the first run. Thus the full effect
of this PR should only be to apply the changed formatting rules to the
repo, and from skimming the results, this seems to be the case.
My work can be checked by applying the short, manual commits, and then
rerunning the command listed in the autogenerated commits (those whose
messages I have prefixed auto:) and seeing if your results agree.
It might be that the other diffs should be fixed at some point but I'm
leaving that aside for now.
fd '\.c(c|pp)?$' --print0| xargs -0 clang-format -i
263 lines
8.9 KiB
C
263 lines
8.9 KiB
C
/*-*- mode:c;indent-tabs-mode:nil;c-basic-offset:2;tab-width:8;coding:utf-8 -*-│
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│ vi: set et 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 "dsp/core/core.h"
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#include "libc/calls/calls.h"
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#include "libc/calls/struct/rlimit.h"
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#include "libc/calls/struct/timespec.h"
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#include "libc/dce.h"
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#include "libc/errno.h"
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#include "libc/intrin/directmap.internal.h"
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#include "libc/intrin/safemacros.internal.h"
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#include "libc/limits.h"
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#include "libc/runtime/runtime.h"
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#include "libc/stdio/rand.h"
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#include "libc/stdio/stdio.h"
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#include "libc/sysv/consts/auxv.h"
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#include "libc/sysv/consts/map.h"
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#include "libc/sysv/consts/o.h"
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#include "libc/sysv/consts/prot.h"
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#include "libc/sysv/consts/rlimit.h"
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#include "libc/sysv/consts/sig.h"
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#include "libc/testlib/testlib.h"
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#include "libc/time/time.h"
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#include "libc/x/xsigaction.h"
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#include "libc/x/xspawn.h"
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#ifdef __x86_64__
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#define MEM (64 * 1024 * 1024)
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static char tmpname[PATH_MAX];
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void OnSigxcpu(int sig) {
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ASSERT_EQ(SIGXCPU, sig);
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_Exit(0);
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}
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void OnSigxfsz(int sig) {
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unlink(tmpname);
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ASSERT_EQ(SIGXFSZ, sig);
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_Exit(0);
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}
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TEST(setrlimit, testCpuLimit) {
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int wstatus;
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struct rlimit rlim;
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struct timespec start;
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double matrices[3][3][3];
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if (IsWindows())
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return; // of course it doesn't work on windows
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if (IsXnu())
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return; // TODO(jart): it worked before
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if (IsOpenbsd())
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return; // TODO(jart): fix flake
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ASSERT_NE(-1, (wstatus = xspawn(0)));
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if (wstatus == -2) {
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ASSERT_EQ(0, xsigaction(SIGXCPU, OnSigxcpu, 0, 0, 0));
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ASSERT_EQ(0, getrlimit(RLIMIT_CPU, &rlim));
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rlim.rlim_cur = 1; // set soft limit to one second
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ASSERT_EQ(0, setrlimit(RLIMIT_CPU, &rlim));
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start = timespec_real();
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do {
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matmul3(matrices[0], matrices[1], matrices[2]);
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matmul3(matrices[0], matrices[1], matrices[2]);
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matmul3(matrices[0], matrices[1], matrices[2]);
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matmul3(matrices[0], matrices[1], matrices[2]);
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} while (timespec_sub(timespec_real(), start).tv_sec < 5);
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_Exit(1);
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}
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EXPECT_TRUE(WIFEXITED(wstatus));
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EXPECT_FALSE(WIFSIGNALED(wstatus));
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EXPECT_EQ(0, WEXITSTATUS(wstatus));
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EXPECT_EQ(0, WTERMSIG(wstatus));
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}
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TEST(setrlimit, testFileSizeLimit) {
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char junkdata[512];
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int i, fd, wstatus;
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struct rlimit rlim;
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if (IsWindows())
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return; /* of course it doesn't work on windows */
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ASSERT_NE(-1, (wstatus = xspawn(0)));
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if (wstatus == -2) {
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ASSERT_EQ(0, xsigaction(SIGXFSZ, OnSigxfsz, 0, 0, 0));
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ASSERT_EQ(0, getrlimit(RLIMIT_FSIZE, &rlim));
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rlim.rlim_cur = 1024 * 1024; /* set soft limit to one megabyte */
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ASSERT_EQ(0, setrlimit(RLIMIT_FSIZE, &rlim));
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snprintf(tmpname, sizeof(tmpname), "%s/%s.%d",
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firstnonnull(getenv("TMPDIR"), "/tmp"),
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firstnonnull(program_invocation_short_name, "unknown"), getpid());
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ASSERT_NE(-1, (fd = open(tmpname, O_RDWR | O_CREAT | O_TRUNC, 0644)));
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rngset(junkdata, 512, _rand64, -1);
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for (i = 0; i < 5 * 1024 * 1024 / 512; ++i) {
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ASSERT_EQ(512, write(fd, junkdata, 512));
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}
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close(fd);
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unlink(tmpname);
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_Exit(1);
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}
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EXPECT_TRUE(WIFEXITED(wstatus));
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EXPECT_FALSE(WIFSIGNALED(wstatus));
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EXPECT_EQ(0, WEXITSTATUS(wstatus));
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EXPECT_EQ(0, WTERMSIG(wstatus));
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}
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int SetKernelEnforcedMemoryLimit(size_t n) {
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struct rlimit rlim;
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getrlimit(RLIMIT_AS, &rlim);
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rlim.rlim_cur = n;
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return setrlimit(RLIMIT_AS, &rlim);
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}
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TEST(setrlimit, testMemoryLimit) {
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char *p;
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bool gotsome;
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int i, wstatus;
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if (IsXnu())
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return;
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if (IsAsan())
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return; /* b/c we use sys_mmap */
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ASSERT_NE(-1, (wstatus = xspawn(0)));
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if (wstatus == -2) {
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ASSERT_EQ(0, SetKernelEnforcedMemoryLimit(MEM));
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for (gotsome = false, i = 0; i < (MEM * 2) / getauxval(AT_PAGESZ); ++i) {
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p = mmap(0, getauxval(AT_PAGESZ), PROT_READ | PROT_WRITE,
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MAP_ANONYMOUS | MAP_PRIVATE | MAP_POPULATE, -1, 0);
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if (p != MAP_FAILED) {
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gotsome = true;
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} else {
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if (!IsNetbsd()) {
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// TODO(jart): what's going on with NetBSD?
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ASSERT_TRUE(gotsome);
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}
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ASSERT_EQ(ENOMEM, errno);
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_Exit(0);
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}
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rngset(p, getauxval(AT_PAGESZ), _rand64, -1);
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}
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_Exit(1);
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}
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EXPECT_TRUE(WIFEXITED(wstatus));
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EXPECT_FALSE(WIFSIGNALED(wstatus));
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EXPECT_EQ(0, WEXITSTATUS(wstatus));
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EXPECT_EQ(0, WTERMSIG(wstatus));
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}
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TEST(setrlimit, testVirtualMemoryLimit) {
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char *p;
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int i, wstatus;
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if (IsAsan())
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return;
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if (IsXnu())
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return; /* doesn't work on darwin */
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if (IsOpenbsd())
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return; /* unavailable on openbsd */
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if (IsWindows())
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return; /* of course it doesn't work on windows */
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ASSERT_NE(-1, (wstatus = xspawn(0)));
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if (wstatus == -2) {
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ASSERT_EQ(0, setrlimit(RLIMIT_AS, &(struct rlimit){MEM, MEM}));
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for (i = 0; i < (MEM * 2) / getauxval(AT_PAGESZ); ++i) {
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p = sys_mmap(0, getauxval(AT_PAGESZ), PROT_READ | PROT_WRITE,
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MAP_ANONYMOUS | MAP_PRIVATE | MAP_POPULATE, -1, 0)
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.addr;
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if (p == MAP_FAILED) {
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ASSERT_EQ(ENOMEM, errno);
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_Exit(0);
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}
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rngset(p, getauxval(AT_PAGESZ), _rand64, -1);
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}
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_Exit(1);
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}
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EXPECT_TRUE(WIFEXITED(wstatus));
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EXPECT_FALSE(WIFSIGNALED(wstatus));
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EXPECT_EQ(0, WEXITSTATUS(wstatus));
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EXPECT_EQ(0, WTERMSIG(wstatus));
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}
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TEST(setrlimit, testDataMemoryLimit) {
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char *p;
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int i, wstatus;
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if (IsAsan())
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return;
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if (IsXnu())
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return; /* doesn't work on darwin */
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if (IsNetbsd())
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return; /* doesn't work on netbsd */
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if (IsFreebsd())
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return; /* doesn't work on freebsd */
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if (IsLinux())
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return; /* doesn't work on gnu/systemd */
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if (IsWindows())
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return; /* of course it doesn't work on windows */
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ASSERT_NE(-1, (wstatus = xspawn(0)));
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if (wstatus == -2) {
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ASSERT_EQ(0, setrlimit(RLIMIT_DATA, &(struct rlimit){MEM, MEM}));
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for (i = 0; i < (MEM * 2) / getauxval(AT_PAGESZ); ++i) {
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p = sys_mmap(0, getauxval(AT_PAGESZ), PROT_READ | PROT_WRITE,
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MAP_ANONYMOUS | MAP_PRIVATE | MAP_POPULATE, -1, 0)
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.addr;
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if (p == MAP_FAILED) {
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ASSERT_EQ(ENOMEM, errno);
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_Exit(0);
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}
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rngset(p, getauxval(AT_PAGESZ), _rand64, -1);
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}
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_Exit(1);
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}
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EXPECT_TRUE(WIFEXITED(wstatus));
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EXPECT_FALSE(WIFSIGNALED(wstatus));
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EXPECT_EQ(0, WEXITSTATUS(wstatus));
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EXPECT_EQ(0, WTERMSIG(wstatus));
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}
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TEST(setrlimit, testPhysicalMemoryLimit) {
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/* RLIMIT_RSS doesn't work on gnu/systemd */
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/* RLIMIT_RSS doesn't work on darwin */
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/* RLIMIT_RSS doesn't work on freebsd */
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/* RLIMIT_RSS doesn't work on netbsd */
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/* RLIMIT_RSS doesn't work on openbsd */
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/* of course it doesn't work on windows */
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}
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wontreturn void OnVfork(void *ctx) {
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struct rlimit *rlim;
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rlim = ctx;
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rlim->rlim_cur -= 1;
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ASSERT_EQ(0, getrlimit(RLIMIT_CPU, rlim));
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_Exit(0);
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}
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TEST(setrlimit, isVforkSafe) {
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int ws;
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struct rlimit rlim[2];
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if (IsWindows())
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return; /* of course it doesn't work on windows */
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ASSERT_EQ(0, getrlimit(RLIMIT_CPU, rlim));
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ASSERT_NE(-1, (ws = xvspawn(OnVfork, rlim, 0)));
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EXPECT_TRUE(WIFEXITED(ws));
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EXPECT_FALSE(WIFSIGNALED(ws));
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EXPECT_EQ(0, WEXITSTATUS(ws));
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EXPECT_EQ(0, WTERMSIG(ws));
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ASSERT_EQ(0, getrlimit(RLIMIT_CPU, rlim + 1));
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EXPECT_EQ(rlim[0].rlim_cur, rlim[1].rlim_cur);
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EXPECT_EQ(rlim[0].rlim_max, rlim[1].rlim_max);
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}
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#endif /* __x86_64__ */
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