mirrors/cosmopolitan
1
0
Fork 0
mirror of https://github.com/jart/cosmopolitan.git synced 2025-06-27 14:58:30 +00:00
Code Issues Projects Releases Packages Wiki Activity Actions 1

Improve threading support further

Browse source
This commit is contained in:
Justine Tunney 2022-05-17 04:14:28 -07:00
parent 8bfb70ca3f
commit ce71677156
61 changed files with 882 additions and 747 deletions
Download patch file Download diff file Expand all files Collapse all files

45
test/libc/runtime/clone_test.c
View file

@ -21,6 +21,7 @@
#include "libc/errno.h"
#include "libc/intrin/kprintf.h"
#include "libc/intrin/spinlock.h"
#include "libc/intrin/threaded.h"
#include "libc/mem/mem.h"
#include "libc/runtime/stack.h"
#include "libc/sysv/consts/clone.h"
@ -31,7 +32,7 @@
#include "libc/time/time.h"
char *stack, *tls;
int x, me, thechilde;
int x, me, tid, thechilde;
_Alignas(64) volatile char lock;
void SetUp(void) {
@ -39,9 +40,8 @@ void SetUp(void) {
lock = 0;
me = gettid();
thechilde = 0;
tls = calloc(1, 512);
*(intptr_t *)tls = (intptr_t)tls;
*(intptr_t *)(tls + 0x30) = (intptr_t)tls;
tls = calloc(1, 64);
__initialize_tls(tls);
*(int *)(tls + 0x3c) = 31337;
ASSERT_NE(MAP_FAILED, (stack = mmap(0, GetStackSize(), PROT_READ | PROT_WRITE,
MAP_STACK | MAP_ANONYMOUS, -1, 0)));
@ -75,15 +75,12 @@ int DoNothing(void *arg) {
return 0;
}
void __setup_tls(void);
TEST(clone, test1) {
int tid;
_spinlock(&lock);
ASSERT_NE(-1, (tid = clone(CloneTest1, stack, GetStackSize(),
CLONE_THREAD | CLONE_VM | CLONE_FS | CLONE_FILES |
CLONE_SIGHAND | CLONE_SETTLS,
(void *)23, 0, tls, 512, 0)));
(void *)23, 0, tls, 64, 0)));
_spinlock(&lock);
ASSERT_EQ(42, x);
ASSERT_NE(me, tid);
@ -91,13 +88,27 @@ TEST(clone, test1) {
ASSERT_EQ(0, errno);
errno = 31337;
ASSERT_EQ(31337, errno);
return;
intptr_t *p;
asm("movq\t%%fs:0x30,%0" : "=a"(p));
kprintf("%fs:0x30 = %p\n", p);
for (int i = 0; i < 64; ++i) {
kprintf("0x%.5x = %p\n", i * 8, p[i]);
}
kprintf("\n");
errno = 0;
}
int CloneTestSys(void *arg) {
thechilde = gettid();
ASSERT_EQ(31337, errno);
open(0, 0);
ASSERT_EQ(EFAULT, errno);
_spunlock(&lock);
return 0;
}
TEST(clone, tlsSystemCallsErrno_wontClobberMainThreadBecauseTls) {
ASSERT_EQ(0, errno);
ASSERT_EQ(31337, *(int *)(tls + 0x3c));
_spinlock(&lock);
ASSERT_NE(-1, (tid = clone(CloneTestSys, stack, GetStackSize(),
CLONE_THREAD | CLONE_VM | CLONE_FS | CLONE_FILES |
CLONE_SIGHAND | CLONE_SETTLS,
(void *)23, 0, tls, 64, 0)));
_spinlock(&lock);
ASSERT_EQ(0, errno);
ASSERT_EQ(EFAULT, *(int *)(tls + 0x3c));
}