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Write some lock contention tests

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This commit is contained in:
Justine Tunney 2022-06-16 09:06:09 -07:00
parent 42c38bc3e3
commit c06ffd458c
19 changed files with 205 additions and 76 deletions
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6
test/libc/runtime/clone_test.c
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@ -21,6 +21,7 @@
#include "libc/errno.h"
#include "libc/intrin/kprintf.h"
#include "libc/intrin/spinlock.h"
#include "libc/intrin/wait0.internal.h"
#include "libc/log/backtrace.internal.h"
#include "libc/mem/mem.h"
#include "libc/nexgen32e/gettls.h"
@ -102,14 +103,13 @@ int CloneTest1(void *arg) {
TEST(clone, test1) {
int ptid = 0;
*childetid = -1;
_seizelock(childetid, -1);
ASSERT_NE(-1, (tid = clone(CloneTest1, stack, GetStackSize(),
CLONE_THREAD | CLONE_VM | CLONE_FS | CLONE_FILES |
CLONE_SIGHAND | CLONE_PARENT_SETTID |
CLONE_CHILD_SETTID | CLONE_CHILD_CLEARTID |
CLONE_SETTLS,
(void *)23, &ptid, tls, 64, childetid)));
_spinlock(childetid); // CLONE_CHILD_CLEARTID
_wait0(childetid); // CLONE_CHILD_CLEARTID
ASSERT_NE(gettid(), tid);
ASSERT_EQ(tid, ptid);
ASSERT_EQ(42, x);
@ -174,7 +174,7 @@ TEST(clone, tlsSystemCallsErrno_wontClobberMainThreadBecauseTls) {
}
sysbarrier = 1;
for (i = 0; i < 8; ++i) {
_spinlock((int *)(tls[i] + 0x38));
_wait0((int *)(tls[i] + 0x38));
free(tls[i]);
munmap(stack[i], GetStackSize());
}