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Make _Thread_local work across platforms

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We now rewrite the binary image at runtime on Windows and XNU to change
mov %fs:0,%reg instructions to use %gs instead. There's also simpler
threading API introduced by this change and it's called _spawn() and
_join(), which has replaced most clone() usage.
This commit is contained in:
Justine Tunney 2022-07-10 04:01:17 -07:00
parent e4d6e263d4
commit 5f4f6b0e69
51 changed files with 808 additions and 1043 deletions
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18
test/libc/calls/reservefd_test.c
View file

@ -40,6 +40,7 @@
#include "libc/sysv/consts/sig.h"
#include "libc/testlib/hyperion.h"
#include "libc/testlib/testlib.h"
#include "libc/thread/spawn.h"
#include "libc/time/time.h"
STATIC_YOINK("zip_uri_support");
@ -51,9 +52,6 @@ void PullSomeZipFilesIntoLinkage(void) {
gmtime(0);
}
char *stack[THREADS];
char tls[THREADS][64];
TEST(reservefd, testGrowthOfFdsDataStructure) {
int i, n;
struct rlimit rlim;
@ -87,7 +85,7 @@ void OnSigAlrm(int sig, siginfo_t *si, ucontext_t *ctx) {
close(fd); // can eintr which doesn't matter
}
int Worker(void *p) {
int Worker(void *p, int tid) {
char buf[64];
int i, rc, fd;
for (i = 0; i < 64; ++i) {
@ -111,6 +109,7 @@ int Worker(void *p) {
TEST(reservefd, tortureTest) {
int i;
struct spawn th[THREADS];
struct sigaction oldsa;
struct itimerval oldit;
struct itimerval it = {{0, 10000}, {0, 100}};
@ -119,17 +118,10 @@ TEST(reservefd, tortureTest) {
// ASSERT_SYS(0, 0, sigaction(SIGALRM, &sa, &oldsa));
// ASSERT_SYS(0, 0, setitimer(ITIMER_REAL, &it, &oldit));
for (i = 0; i < THREADS; ++i) {
clone(Worker,
(stack[i] = mmap(0, GetStackSize(), PROT_READ | PROT_WRITE,
MAP_STACK | MAP_ANONYMOUS, -1, 0)),
GetStackSize(),
CLONE_THREAD | CLONE_VM | CLONE_FS | CLONE_FILES | CLONE_SIGHAND |
CLONE_CHILD_SETTID | CLONE_CHILD_CLEARTID | CLONE_SETTLS,
0, 0, __initialize_tls(tls[i]), sizeof(tls[i]),
(int *)(tls[i] + 0x38));
_spawn(Worker, 0, th + i);
}
for (i = 0; i < THREADS; ++i) {
_wait0((int *)(tls[i] + 0x38));
_join(th + i);
}
// EXPECT_SYS(0, 0, sigaction(SIGALRM, &oldsa, 0));
// EXPECT_SYS(0, 0, setitimer(ITIMER_REAL, &oldit, 0));