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[WIP] Threading phase 2 (#301)

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* Exponential back-off
* Removed "native" specifier
* Abstract away Futex for cthread
* Complete setup for TLS (including main thread)
This commit is contained in:
Florian Lemaitre 2021-10-26 01:02:26 +02:00 • committed by GitHub
parent 660ff56d40
commit 45a7435788
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GPG key ID: 4AEE18F83AFDEB23
11 changed files with 249 additions and 78 deletions
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25
examples/thread.c
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@ -7,35 +7,44 @@
│ • http://creativecommons.org/publicdomain/zero/1.0/ │
╚─────────────────────────────────────────────────────────────────*/
#endif
#include "libc/calls/calls.h"
#include "libc/runtime/runtime.h"
#include "libc/stdio/stdio.h"
#include "libc/thread/create.h"
#include "libc/thread/self.h"
#include "libc/thread/detach.h"
#include "libc/thread/join.h"
#include "libc/thread/nativesem.h"
#include "libc/thread/sem.h"
#include "libc/time/time.h"
cthread_native_sem_t semaphore;
cthread_sem_t semaphore;
__thread int test_tls = 0x12345678;
int worker(void* arg) {
cthread_native_sem_signal(&semaphore);
void* p;
arch_prctl(ARCH_GET_FS, &p);
cthread_sem_signal(&semaphore);
cthread_t self = cthread_self();
int tid = self->tid;
sleep(1);
//sleep(10000);
//printf("[%p] %d\n", self, tid);
printf("[%p] %d -> 0x%x\n", self, tid, test_tls);
(void)arg;
return 4;
}
int main() {
cthread_native_sem_init(&semaphore, 0);
cthread_t self = cthread_self();
int tid = self->tid;
printf("[%p] %d -> 0x%x\n", self, tid, test_tls);
cthread_sem_init(&semaphore, 0);
cthread_t thread;
int rc = cthread_create(&thread, NULL, &worker, NULL);
if (rc == 0) {
cthread_native_sem_wait(&semaphore, 0, 0, NULL);
cthread_sem_wait(&semaphore, 0, NULL);
//printf("thread created: %p\n", thread);
sleep(1);
#if 1
@ -44,8 +53,8 @@ int main() {
rc = cthread_detach(thread);
sleep(2);
#endif
cthread_native_sem_signal(&semaphore);
cthread_native_sem_wait(&semaphore, 0, 0, NULL);
cthread_sem_signal(&semaphore);
cthread_sem_wait(&semaphore, 0, NULL);
//printf("thread joined: %p -> %d\n", thread, rc);
} else {
printf("ERROR: thread could not be started: %d\n", rc);