mirror of
https://github.com/jart/cosmopolitan.git
synced 2025-02-01 12:03:41 +00:00
fec396037a
We now have a high-quality clone() implementation for creating lightweight threads on Linux/Windows/FreeBSD/NetBSD/OpenBSD.
69 lines
3 KiB
C
69 lines
3 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 2021 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/dce.h"
|
|
#include "libc/errno.h"
|
|
#include "libc/intrin/spinlock.h"
|
|
#include "libc/runtime/stack.h"
|
|
#include "libc/sysv/consts/clone.h"
|
|
#include "libc/sysv/consts/map.h"
|
|
#include "libc/sysv/consts/prot.h"
|
|
#include "libc/sysv/consts/sig.h"
|
|
#include "libc/testlib/testlib.h"
|
|
#include "libc/time/time.h"
|
|
|
|
char *stack;
|
|
int x, me, thechilde;
|
|
_Alignas(64) volatile char lock;
|
|
|
|
void SetUp(void) {
|
|
x = 0;
|
|
lock = 0;
|
|
me = gettid();
|
|
thechilde = 0;
|
|
ASSERT_NE(MAP_FAILED, (stack = mmap(0, GetStackSize(), PROT_READ | PROT_WRITE,
|
|
MAP_STACK | MAP_ANONYMOUS, -1, 0)));
|
|
}
|
|
|
|
void TearDown(void) {
|
|
tkill(thechilde, SIGKILL), errno = 0;
|
|
sched_yield();
|
|
EXPECT_SYS(0, 0, munmap(stack, GetStackSize()));
|
|
}
|
|
|
|
int CloneTest1(void *arg) {
|
|
x = 42;
|
|
ASSERT_EQ(23, (intptr_t)arg);
|
|
thechilde = gettid();
|
|
ASSERT_NE(gettid(), getpid());
|
|
_spunlock(&lock);
|
|
return 0;
|
|
}
|
|
|
|
TEST(clone, test1) {
|
|
int tid;
|
|
_spinlock(&lock);
|
|
ASSERT_NE(-1, (tid = clone(CloneTest1, stack, GetStackSize(),
|
|
CLONE_VM | CLONE_FS | CLONE_FILES | CLONE_SIGHAND,
|
|
(void *)23, 0, 0, 0, 0)));
|
|
_spinlock(&lock);
|
|
ASSERT_EQ(42, x);
|
|
ASSERT_NE(me, tid);
|
|
ASSERT_EQ(tid, thechilde);
|
|
}
|