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[WIP] Threading (#282)

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* Thread creation
* Proper thread creation and exit
* Join/Detach protocol
* Added semaphore with futex (hopefully fast)
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Florian Lemaitre 2021-10-13 20:26:05 +02:00 • committed by GitHub
parent d852640a1e
commit a0b39f886c
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30 changed files with 792 additions and 12 deletions
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examples/thread.c Normal file
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#if 0
/*─────────────────────────────────────────────────────────────────╗
│ To the extent possible under law, Justine Tunney has waived │
│ all copyright and related or neighboring rights to this file, │
│ as it is written in the following disclaimers: │
│ • http://unlicense.org/ │
│ • http://creativecommons.org/publicdomain/zero/1.0/ │
╚─────────────────────────────────────────────────────────────────*/
#endif
#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/time/time.h"
cthread_native_sem_t semaphore;
int worker(void* arg) {
cthread_native_sem_signal(&semaphore);
cthread_t self = cthread_self();
int tid = self->tid;
sleep(1);
//sleep(10000);
//printf("[%p] %d\n", self, tid);
(void)arg;
return 4;
}
int main() {
cthread_native_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);
//printf("thread created: %p\n", thread);
sleep(1);
#if 1
cthread_join(thread, &rc);
#else
rc = cthread_detach(thread);
sleep(2);
#endif
cthread_native_sem_signal(&semaphore);
cthread_native_sem_wait(&semaphore, 0, 0, NULL);
//printf("thread joined: %p -> %d\n", thread, rc);
} else {
printf("ERROR: thread could not be started: %d\n", rc);
}
return 0;
}