void nub_thread_join(nub_thread_t* thread) {
ASSERT(NULL != thread);
thread->disposed = 1;
uv_sem_post(&thread->sem_wait_);
uv_thread_join(&thread->uvthread);
uv_close((uv_handle_t*) thread->async_signal_, nub__free_handle_cb);
uv_sem_destroy(&thread->thread_lock_sem_);
uv_sem_destroy(&thread->sem_wait_);
--thread->nubloop->ref_;
thread->nubloop = NULL;
}
int uv_barrier_init(uv_barrier_t* barrier, unsigned int count) {
int err;
barrier->n = count;
barrier->count = 0;
err = uv_mutex_init(&barrier->mutex);
if (err)
return -err;
err = uv_sem_init(&barrier->turnstile1, 0);
if (err)
goto error2;
err = uv_sem_init(&barrier->turnstile2, 1);
if (err)
goto error;
return 0;
error:
uv_sem_destroy(&barrier->turnstile1);
error2:
uv_mutex_destroy(&barrier->mutex);
return -err;
}
/* kproc exit */
void
pexit(char *msg, int t)
{
Osenv *e;
kproc_t* p;
Osdep *os;
USED(t);
/* get our process context and remove ourselves from proc list
*/
trace(TRACE_DEBUG, "kernel/pexit: process shutdown");
p = (kproc_t*)up;
lock(&procs.l);
if(p->prev)
p->prev->next = p->next;
else
procs.head = p->next;
if(p->next)
p->next->prev = p->prev;
else
procs.tail = p->prev;
unlock(&procs.l);
if(0)
print("pexit: %s: %s\n", p->text, msg);
trace(TRACE_DEBUG, "kernel/pexit: releasing resources");
/* release name,fid and env groups */
e = p->env;
if(e != nil) {
trace(TRACE_DEBUG, "kernel/pexit: closing fgrp");
closefgrp(e->fgrp);
trace(TRACE_DEBUG, "kernel/pexit: closing pgrp");
closepgrp(e->pgrp);
trace(TRACE_DEBUG, "kernel/pexit: closing egrp");
closeegrp(e->egrp);
trace(TRACE_DEBUG, "kernel/pexit: closing signatures");
closesigs(e->sigs);
trace(TRACE_DEBUG, "kernel/pexit: freeing user");
free(e->user);
}
/* release os dependencies */
os = p->os;
if(os != nil){
trace(TRACE_DEBUG, "kernel/pexit: deleting semaphore");
uv_sem_destroy(&os->sem);
trace(TRACE_DEBUG, "kernel/pexit: freeing os dependencies");
free(os);
}
/* release the process itself */
trace(TRACE_DEBUG, "kernel/pexit: freeing process");
free(p);
}
void uv__stream_close(uv_stream_t* handle) {
#if defined(__APPLE__)
/* Terminate select loop first */
if (handle->select != NULL) {
uv__stream_select_t* s;
s = handle->select;
uv_sem_post(&s->sem);
uv__stream_osx_interrupt_select(handle);
uv_thread_join(&s->thread);
uv_sem_destroy(&s->sem);
uv_mutex_destroy(&s->mutex);
close(s->fake_fd);
close(s->int_fd);
uv_close((uv_handle_t*) &s->async, uv__stream_osx_cb_close);
handle->select = NULL;
}
#endif /* defined(__APPLE__) */
uv_read_stop(handle);
uv__io_close(handle->loop, &handle->io_watcher);
close(handle->io_watcher.fd);
handle->io_watcher.fd = -1;
if (handle->accepted_fd >= 0) {
close(handle->accepted_fd);
handle->accepted_fd = -1;
}
assert(!uv__io_active(&handle->io_watcher, UV__POLLIN | UV__POLLOUT));
}
void
mrb_uv_sem_free(mrb_state *mrb, void *p)
{
if(!p) { return; }
uv_sem_destroy((uv_sem_t*)p);
mrb_free(mrb, p);
}
static void
Semaphore_tp_dealloc(Semaphore *self)
{
if (self->initialized) {
uv_sem_destroy(&self->uv_semaphore);
}
Py_TYPE(self)->tp_free(self);
}
void async_worker_free(async_worker_t *const worker) {
if(!worker) return;
assert(!worker->work);
uv_sem_post(worker->sem);
uv_thread_join(worker->thread);
uv_sem_destroy(worker->sem);
uv_close((uv_handle_t *)&worker->async);
free(worker);
}
static mrb_value
mrb_uv_sem_destroy(mrb_state *mrb, mrb_value self)
{
uv_sem_t *sem = (uv_sem_t*)mrb_uv_get_ptr(mrb, self, &sem_type);
uv_sem_destroy(sem);
mrb_free(mrb, DATA_PTR(self));
DATA_PTR(self) = NULL;
return self;
}
void Thread::start()
{
if (this->is_started.exchange(true))
{
LOG(INFO) << "Thread " << static_cast<void*>(this) << " already started";
return;
}
uv_sem_init(&this->semaphore, 0);
uv_thread_create(&this->thread_id, &Thread::thread_worker, static_cast<void*>(this));
uv_sem_wait(&this->semaphore);
uv_sem_destroy(&this->semaphore);
}
int uv_barrier_init(uv_barrier_t* barrier, unsigned int count) {
barrier->n = count;
barrier->count = 0;
if (uv_mutex_init(&barrier->mutex)) return -1;
if (uv_sem_init(&barrier->turnstile1, 0)) goto error2;
if (uv_sem_init(&barrier->turnstile2, 1)) goto error;
return 0;
error:
uv_sem_destroy(&barrier->turnstile1);
error2:
uv_mutex_destroy(&barrier->mutex);
return -1;
}
static void init_threads(void) {
unsigned int i;
const char* val;
uv_sem_t sem;
nthreads = ARRAY_SIZE(default_threads);
val = getenv("UV_THREADPOOL_SIZE");
if (val != NULL)
nthreads = atoi(val);
if (nthreads == 0)
nthreads = 1;
if (nthreads > MAX_THREADPOOL_SIZE)
nthreads = MAX_THREADPOOL_SIZE;
threads = default_threads;
if (nthreads > ARRAY_SIZE(default_threads)) {
threads = (uv_thread_t*)uv__malloc(nthreads * sizeof(threads[0]));
if (threads == NULL) {
nthreads = ARRAY_SIZE(default_threads);
threads = default_threads;
}
}
if (uv_cond_init(&cond))
abort();
if (uv_mutex_init(&mutex))
abort();
QUEUE_INIT(&wq);
if (uv_sem_init(&sem, 0))
abort();
for (i = 0; i < nthreads; i++)
if (uv_thread_create(threads + i, worker, &sem))
abort();
for (i = 0; i < nthreads; i++)
uv_sem_wait(&sem);
uv_sem_destroy(&sem);
}
void uv__platform_loop_delete(uv_loop_t* loop) {
QUEUE* item;
uv__cf_loop_signal_t* s;
assert(loop->cf_loop != NULL);
uv__cf_loop_signal(loop, NULL, NULL);
uv_thread_join(&loop->cf_thread);
uv_sem_destroy(&loop->cf_sem);
uv_mutex_destroy(&loop->cf_mutex);
/* Free any remaining data */
while (!QUEUE_EMPTY(&loop->cf_signals)) {
item = QUEUE_HEAD(&loop->cf_signals);
s = QUEUE_DATA(item, uv__cf_loop_signal_t, member);
QUEUE_REMOVE(item);
free(s);
}
}
void uv__platform_loop_delete(uv_loop_t* loop) {
ngx_queue_t* item;
uv__cf_loop_signal_t* s;
assert(loop->cf_loop != NULL);
uv__cf_loop_signal(loop, NULL, NULL);
uv_thread_join(&loop->cf_thread);
uv_sem_destroy(&loop->cf_sem);
uv_mutex_destroy(&loop->cf_mutex);
/* Free any remaining data */
while (!ngx_queue_empty(&loop->cf_signals)) {
item = ngx_queue_head(&loop->cf_signals);
s = ngx_queue_data(item, uv__cf_loop_signal_t, member);
ngx_queue_remove(item);
free(s);
}
}
void nub_loop_dispose(nub_loop_t* loop) {
ASSERT(0 == uv_loop_alive(&loop->uvloop));
ASSERT(1 == fuq_empty(&loop->blocking_queue_));
ASSERT(0 == loop->ref_);
ASSERT(NULL != loop->work_ping_);
ASSERT(0 == uv_has_ref((uv_handle_t*) loop->work_ping_));
ASSERT(1 == fuq_empty(&loop->thread_dispose_queue_));
uv_close((uv_handle_t*) loop->work_ping_, nub__free_handle_cb);
uv_close((uv_handle_t*) &loop->queue_processor_, NULL);
ASSERT(0 == uv_is_active((uv_handle_t*) loop->work_ping_));
fuq_dispose(&loop->thread_dispose_queue_);
uv_mutex_destroy(&loop->thread_dispose_lock_);
uv_sem_destroy(&loop->loop_lock_sem_);
fuq_dispose(&loop->blocking_queue_);
uv_mutex_destroy(&loop->queue_processor_lock_);
fuq_dispose(&loop->work_queue_);
uv_mutex_destroy(&loop->work_lock_);
CHECK_EQ(0, uv_run(&loop->uvloop, UV_RUN_NOWAIT));
CHECK_NE(UV_EBUSY, uv_loop_close(&loop->uvloop));
}
int uv__stream_try_select(uv_stream_t* stream, int fd) {
/*
* kqueue doesn't work with some files from /dev mount on osx.
* select(2) in separate thread for those fds
*/
struct kevent filter[1];
struct kevent events[1];
struct timespec timeout;
uv__stream_select_t* s;
int fds[2];
int ret;
int kq;
kq = kqueue();
if (kq == -1) {
fprintf(stderr, "(libuv) Failed to create kqueue (%d)\n", errno);
return uv__set_sys_error(stream->loop, errno);
}
EV_SET(&filter[0], fd, EVFILT_READ, EV_ADD | EV_ENABLE, 0, 0, 0);
/* Use small timeout, because we only want to capture EINVALs */
timeout.tv_sec = 0;
timeout.tv_nsec = 1;
ret = kevent(kq, filter, 1, events, 1, &timeout);
SAVE_ERRNO(close(kq));
if (ret == -1)
return uv__set_sys_error(stream->loop, errno);
if ((events[0].flags & EV_ERROR) == 0 || events[0].data != EINVAL)
return 0;
/* At this point we definitely know that this fd won't work with kqueue */
s = malloc(sizeof(*s));
if (s == NULL)
return uv__set_artificial_error(stream->loop, UV_ENOMEM);
s->fd = fd;
if (uv_async_init(stream->loop, &s->async, uv__stream_osx_select_cb)) {
SAVE_ERRNO(free(s));
return uv__set_sys_error(stream->loop, errno);
}
s->async.flags |= UV__HANDLE_INTERNAL;
uv__handle_unref(&s->async);
if (uv_sem_init(&s->sem, 0))
goto fatal1;
if (uv_mutex_init(&s->mutex))
goto fatal2;
/* Create fds for io watcher and to interrupt the select() loop. */
if (socketpair(AF_UNIX, SOCK_STREAM, 0, fds))
goto fatal3;
s->fake_fd = fds[0];
s->int_fd = fds[1];
if (uv_thread_create(&s->thread, uv__stream_osx_select, stream))
goto fatal4;
s->stream = stream;
stream->select = s;
return 0;
fatal4:
close(s->fake_fd);
close(s->int_fd);
s->fake_fd = -1;
s->int_fd = -1;
fatal3:
uv_mutex_destroy(&s->mutex);
fatal2:
uv_sem_destroy(&s->sem);
fatal1:
uv_close((uv_handle_t*) &s->async, uv__stream_osx_cb_close);
return uv__set_sys_error(stream->loop, errno);
}
void
uvm_chime_destroy(uvm_chime_t* c){
uv_sem_destroy(&c->sem);
}
void uv_barrier_destroy(uv_barrier_t* barrier) {
uv_sem_destroy(&barrier->turnstile2);
uv_sem_destroy(&barrier->turnstile1);
uv_mutex_destroy(&barrier->mutex);
}
Semaphore::~Semaphore()
{
uv_sem_destroy(&sem);
}
static void done_cb(uv_work_t* req, int status) {
uv_sem_destroy(pause_sems + (req - pause_reqs));
}
