mirror of
https://github.com/jart/cosmopolitan.git
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e7611a8476
- Get threads working on NetBSD - Get threads working on OpenBSD - Fix Emacs config for Emacs v28 - Improve --strace logging of sigset_t - Improve --strace logging of struct stat - Improve memory safety of DescribeThing functions - Refactor auto stack allocation into LIBC_RUNTIME - Introduce shell.com example which works on Windows - Refactor __strace_thing into DescribeThing functions - Document the CHECK macros and improve them in NDEBUG mode - Rewrite MAP_STACK so it uses FreeBSD behavior across platforms - Deprecate and discourage the use of MAP_GROWSDOWN (it's weird)
60 lines
2.8 KiB
C
60 lines
2.8 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/calls/calls.h"
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#include "libc/dce.h"
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#include "libc/intrin/spinlock.h"
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#include "libc/sysv/consts/clone.h"
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#include "libc/sysv/consts/map.h"
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#include "libc/sysv/consts/prot.h"
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#include "libc/testlib/testlib.h"
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int x, thechilde;
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_Alignas(64) volatile char lock;
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void SetUp(void) {
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x = 0;
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lock = 0;
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thechilde = 0;
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}
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int thread(void *arg) {
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x = 42;
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ASSERT_EQ(23, (intptr_t)arg);
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thechilde = gettid();
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_spunlock(&lock);
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return 0;
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}
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TEST(clone, test) {
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if (IsXnu()) return;
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int me, tid;
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char *stack;
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me = gettid();
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_spinlock(&lock);
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stack = mmap(0, FRAMESIZE, PROT_READ | PROT_WRITE,
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MAP_PRIVATE | MAP_ANONYMOUS | MAP_STACK, -1, 0);
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ASSERT_NE(-1, (tid = clone(thread, stack, FRAMESIZE,
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CLONE_VM | CLONE_FS | CLONE_FILES | CLONE_SIGHAND,
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(void *)23, 0, 0, 0, 0)));
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_spinlock(&lock);
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ASSERT_EQ(42, x);
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ASSERT_NE(me, tid);
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ASSERT_EQ(tid, thechilde);
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EXPECT_SYS(0, 0, munmap(stack, FRAMESIZE));
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}
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