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Fix many thread and file descriptor issues on Windows

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The greenbean web server now works nearly perfectly on Windows with over
1000 threads. But some synchronization issues still remain which prevent
us from going over nine thousand.
This commit is contained in:
Justine Tunney 2022-05-20 18:51:41 -07:00
parent 96781d0679
commit 7838edae88
32 changed files with 363 additions and 192 deletions
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21
test/libc/runtime/clone_test.c
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@ -36,7 +36,8 @@
#include "libc/time/time.h"
char *stack, *tls;
int x, me, tid, thechilde, childetid;
int x, me, tid, *childetid;
_Atomic(int) thechilde;
void SetUp(void) {
x = 0;
@ -44,6 +45,7 @@ void SetUp(void) {
tls = calloc(1, 64);
__initialize_tls(tls);
*(int *)(tls + 0x3c) = 31337;
childetid = (int *)(tls + 0x0038);
ASSERT_NE(MAP_FAILED, (stack = mmap(0, GetStackSize(), PROT_READ | PROT_WRITE,
MAP_STACK | MAP_ANONYMOUS, -1, 0)));
}
@ -77,26 +79,25 @@ int CloneTest1(void *arg) {
ASSERT_EQ(31337, errno);
}
ASSERT_EQ(23, (intptr_t)arg);
thechilde = gettid();
ASSERT_NE(gettid(), getpid());
ASSERT_EQ(gettid(), childetid); // CLONE_CHILD_SETTID
ASSERT_EQ(gettid(), *childetid); // CLONE_CHILD_SETTID
return 0;
}
TEST(clone, test1) {
int ptid = 0;
_seizelock(&childetid);
*childetid = -1;
_seizelock(childetid);
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
(void *)23, &ptid, tls, 64, childetid)));
_spinlock(childetid); // CLONE_CHILD_CLEARTID
ASSERT_EQ(tid, ptid);
ASSERT_EQ(42, x);
ASSERT_NE(me, tid);
ASSERT_EQ(tid, thechilde);
ASSERT_EQ(0, errno);
errno = 31337;
ASSERT_EQ(31337, errno);
@ -115,13 +116,13 @@ int CloneTestSys(void *arg) {
TEST(clone, tlsSystemCallsErrno_wontClobberMainThreadBecauseTls) {
ASSERT_EQ(0, errno);
ASSERT_EQ(31337, *(int *)(tls + 0x3c));
_seizelock(&childetid);
_seizelock(childetid);
ASSERT_NE(-1, (tid = clone(CloneTestSys, stack, GetStackSize(),
CLONE_THREAD | CLONE_VM | CLONE_FS | CLONE_FILES |
CLONE_SIGHAND | CLONE_CHILD_SETTID |
CLONE_CHILD_CLEARTID | CLONE_SETTLS,
(void *)23, 0, tls, 64, &childetid)));
_spinlock(&childetid); // CLONE_CHILD_CLEARTID
(void *)23, 0, tls, 64, childetid)));
_spinlock(childetid); // CLONE_CHILD_CLEARTID
ASSERT_EQ(0, errno);
ASSERT_EQ(EFAULT, *(int *)(tls + 0x3c));
}