static void destroy_call(grpc_exec_ctx *exec_ctx, void *call, int success) {
size_t i;
int ii;
grpc_call *c = call;
GPR_TIMER_BEGIN("destroy_call", 0);
for (i = 0; i < 2; i++) {
grpc_metadata_batch_destroy(
&c->metadata_batch[1 /* is_receiving */][i /* is_initial */]);
}
if (c->receiving_stream != NULL) {
grpc_byte_stream_destroy(c->receiving_stream);
}
grpc_call_stack_destroy(exec_ctx, CALL_STACK_FROM_CALL(c));
GRPC_CHANNEL_INTERNAL_UNREF(exec_ctx, c->channel, "call");
gpr_mu_destroy(&c->mu);
for (i = 0; i < STATUS_SOURCE_COUNT; i++) {
if (c->status[i].details) {
GRPC_MDSTR_UNREF(c->status[i].details);
}
}
for (ii = 0; ii < c->send_extra_metadata_count; ii++) {
GRPC_MDELEM_UNREF(c->send_extra_metadata[ii].md);
}
for (i = 0; i < GRPC_CONTEXT_COUNT; i++) {
if (c->context[i].destroy) {
c->context[i].destroy(c->context[i].value);
}
}
if (c->cq) {
GRPC_CQ_INTERNAL_UNREF(c->cq, "bind");
}
gpr_free(c);
GPR_TIMER_END("destroy_call", 0);
}
static void server_delete(grpc_exec_ctx *exec_ctx, grpc_server *server) {
registered_method *rm;
size_t i;
grpc_channel_args_destroy(server->channel_args);
gpr_mu_destroy(&server->mu_global);
gpr_mu_destroy(&server->mu_call);
while ((rm = server->registered_methods) != NULL) {
server->registered_methods = rm->next;
if (server->started) {
request_matcher_destroy(&rm->request_matcher);
}
gpr_free(rm->method);
gpr_free(rm->host);
gpr_free(rm);
}
if (server->started) {
request_matcher_destroy(&server->unregistered_request_matcher);
}
for (i = 0; i < server->cq_count; i++) {
GRPC_CQ_INTERNAL_UNREF(server->cqs[i], "server");
if (server->started) {
gpr_stack_lockfree_destroy(server->request_freelist_per_cq[i]);
gpr_free(server->requested_calls_per_cq[i]);
}
}
gpr_free(server->request_freelist_per_cq);
gpr_free(server->requested_calls_per_cq);
gpr_free(server->cqs);
gpr_free(server->pollsets);
gpr_free(server->shutdown_tags);
gpr_free(server);
}
static void alarm_unref(grpc_alarm *alarm) {
if (gpr_unref(&alarm->refs)) {
grpc_exec_ctx exec_ctx = GRPC_EXEC_CTX_INIT;
if (alarm->cq != NULL) {
GRPC_CQ_INTERNAL_UNREF(&exec_ctx, alarm->cq, "alarm");
}
grpc_exec_ctx_finish(&exec_ctx);
gpr_free(alarm);
}
}
grpc_event grpc_completion_queue_next(grpc_completion_queue *cc,
gpr_timespec deadline, void *reserved) {
grpc_event ret;
grpc_pollset_worker worker;
int first_loop = 1;
gpr_timespec now;
grpc_exec_ctx exec_ctx = GRPC_EXEC_CTX_INIT;
GPR_ASSERT(!reserved);
deadline = gpr_convert_clock_type(deadline, GPR_CLOCK_MONOTONIC);
GRPC_CQ_INTERNAL_REF(cc, "next");
gpr_mu_lock(GRPC_POLLSET_MU(&cc->pollset));
for (;;) {
if (cc->completed_tail != &cc->completed_head) {
grpc_cq_completion *c = (grpc_cq_completion *)cc->completed_head.next;
cc->completed_head.next = c->next & ~(gpr_uintptr)1;
if (c == cc->completed_tail) {
cc->completed_tail = &cc->completed_head;
}
gpr_mu_unlock(GRPC_POLLSET_MU(&cc->pollset));
ret.type = GRPC_OP_COMPLETE;
ret.success = c->next & 1u;
ret.tag = c->tag;
c->done(&exec_ctx, c->done_arg, c);
break;
}
if (cc->shutdown) {
gpr_mu_unlock(GRPC_POLLSET_MU(&cc->pollset));
memset(&ret, 0, sizeof(ret));
ret.type = GRPC_QUEUE_SHUTDOWN;
break;
}
now = gpr_now(GPR_CLOCK_MONOTONIC);
if (!first_loop && gpr_time_cmp(now, deadline) >= 0) {
gpr_mu_unlock(GRPC_POLLSET_MU(&cc->pollset));
memset(&ret, 0, sizeof(ret));
ret.type = GRPC_QUEUE_TIMEOUT;
break;
}
first_loop = 0;
grpc_pollset_work(&exec_ctx, &cc->pollset, &worker, now, deadline);
}
GRPC_SURFACE_TRACE_RETURNED_EVENT(cc, &ret);
GRPC_CQ_INTERNAL_UNREF(cc, "next");
grpc_exec_ctx_finish(&exec_ctx);
return ret;
}
grpc_event grpc_completion_queue_pluck(grpc_completion_queue *cc, void *tag,
gpr_timespec deadline) {
grpc_event ret;
grpc_cq_completion *c;
grpc_cq_completion *prev;
deadline = gpr_convert_clock_type(deadline, GPR_CLOCK_MONOTONIC);
GRPC_CQ_INTERNAL_REF(cc, "pluck");
gpr_mu_lock(GRPC_POLLSET_MU(&cc->pollset));
for (;;) {
prev = &cc->completed_head;
while ((c = (grpc_cq_completion *)(prev->next & ~(gpr_uintptr)1)) !=
&cc->completed_head) {
if (c->tag == tag) {
prev->next =
(prev->next & (gpr_uintptr)1) | (c->next & ~(gpr_uintptr)1);
if (c == cc->completed_tail) {
cc->completed_tail = prev;
}
gpr_mu_unlock(GRPC_POLLSET_MU(&cc->pollset));
ret.type = GRPC_OP_COMPLETE;
ret.success = c->next & 1u;
ret.tag = c->tag;
c->done(c->done_arg, c);
goto done;
}
prev = c;
}
if (cc->shutdown) {
gpr_mu_unlock(GRPC_POLLSET_MU(&cc->pollset));
memset(&ret, 0, sizeof(ret));
ret.type = GRPC_QUEUE_SHUTDOWN;
break;
}
if (!grpc_pollset_work(&cc->pollset, deadline)) {
gpr_mu_unlock(GRPC_POLLSET_MU(&cc->pollset));
memset(&ret, 0, sizeof(ret));
ret.type = GRPC_QUEUE_TIMEOUT;
break;
}
}
done:
GRPC_SURFACE_TRACE_RETURNED_EVENT(cc, &ret);
GRPC_CQ_INTERNAL_UNREF(cc, "pluck");
return ret;
}
grpc_event grpc_completion_queue_next(grpc_completion_queue *cc,
gpr_timespec deadline) {
grpc_event ret;
deadline = gpr_convert_clock_type(deadline, GPR_CLOCK_MONOTONIC);
GRPC_CQ_INTERNAL_REF(cc, "next");
gpr_mu_lock(GRPC_POLLSET_MU(&cc->pollset));
for (;;) {
if (cc->completed_tail != &cc->completed_head) {
grpc_cq_completion *c = (grpc_cq_completion *)cc->completed_head.next;
cc->completed_head.next = c->next & ~(gpr_uintptr)1;
if (c == cc->completed_tail) {
cc->completed_tail = &cc->completed_head;
}
gpr_mu_unlock(GRPC_POLLSET_MU(&cc->pollset));
ret.type = GRPC_OP_COMPLETE;
ret.success = c->next & 1u;
ret.tag = c->tag;
c->done(c->done_arg, c);
break;
}
if (cc->shutdown) {
gpr_mu_unlock(GRPC_POLLSET_MU(&cc->pollset));
memset(&ret, 0, sizeof(ret));
ret.type = GRPC_QUEUE_SHUTDOWN;
break;
}
if (!grpc_pollset_work(&cc->pollset, deadline)) {
gpr_mu_unlock(GRPC_POLLSET_MU(&cc->pollset));
memset(&ret, 0, sizeof(ret));
ret.type = GRPC_QUEUE_TIMEOUT;
break;
}
}
GRPC_SURFACE_TRACE_RETURNED_EVENT(cc, &ret);
GRPC_CQ_INTERNAL_UNREF(cc, "next");
return ret;
}
static void server_delete(grpc_server *server) {
registered_method *rm;
size_t i;
grpc_channel_args_destroy(server->channel_args);
gpr_mu_destroy(&server->mu_global);
gpr_mu_destroy(&server->mu_call);
gpr_free(server->channel_filters);
requested_call_array_destroy(&server->requested_calls);
while ((rm = server->registered_methods) != NULL) {
server->registered_methods = rm->next;
gpr_free(rm->method);
gpr_free(rm->host);
requested_call_array_destroy(&rm->requested);
gpr_free(rm);
}
for (i = 0; i < server->cq_count; i++) {
GRPC_CQ_INTERNAL_UNREF(server->cqs[i], "server");
}
gpr_free(server->cqs);
gpr_free(server->pollsets);
gpr_free(server->shutdown_tags);
gpr_free(server);
}
void grpc_completion_queue_destroy(grpc_completion_queue *cc) {
grpc_completion_queue_shutdown(cc);
GRPC_CQ_INTERNAL_UNREF(cc, "destroy");
}
grpc_event grpc_completion_queue_pluck(grpc_completion_queue *cc, void *tag,
gpr_timespec deadline, void *reserved) {
grpc_event ret;
grpc_cq_completion *c;
grpc_cq_completion *prev;
grpc_pollset_worker worker;
gpr_timespec now;
int first_loop = 1;
grpc_exec_ctx exec_ctx = GRPC_EXEC_CTX_INIT;
GPR_ASSERT(!reserved);
deadline = gpr_convert_clock_type(deadline, GPR_CLOCK_MONOTONIC);
GRPC_CQ_INTERNAL_REF(cc, "pluck");
gpr_mu_lock(GRPC_POLLSET_MU(&cc->pollset));
for (;;) {
prev = &cc->completed_head;
while ((c = (grpc_cq_completion *)(prev->next & ~(gpr_uintptr)1)) !=
&cc->completed_head) {
if (c->tag == tag) {
prev->next =
(prev->next & (gpr_uintptr)1) | (c->next & ~(gpr_uintptr)1);
if (c == cc->completed_tail) {
cc->completed_tail = prev;
}
gpr_mu_unlock(GRPC_POLLSET_MU(&cc->pollset));
ret.type = GRPC_OP_COMPLETE;
ret.success = c->next & 1u;
ret.tag = c->tag;
c->done(&exec_ctx, c->done_arg, c);
goto done;
}
prev = c;
}
if (cc->shutdown) {
gpr_mu_unlock(GRPC_POLLSET_MU(&cc->pollset));
memset(&ret, 0, sizeof(ret));
ret.type = GRPC_QUEUE_SHUTDOWN;
break;
}
if (!add_plucker(cc, tag, &worker)) {
gpr_log(GPR_DEBUG,
"Too many outstanding grpc_completion_queue_pluck calls: maximum "
"is %d",
GRPC_MAX_COMPLETION_QUEUE_PLUCKERS);
gpr_mu_unlock(GRPC_POLLSET_MU(&cc->pollset));
memset(&ret, 0, sizeof(ret));
/* TODO(ctiller): should we use a different result here */
ret.type = GRPC_QUEUE_TIMEOUT;
break;
}
now = gpr_now(GPR_CLOCK_MONOTONIC);
if (!first_loop && gpr_time_cmp(now, deadline) >= 0) {
del_plucker(cc, tag, &worker);
gpr_mu_unlock(GRPC_POLLSET_MU(&cc->pollset));
memset(&ret, 0, sizeof(ret));
ret.type = GRPC_QUEUE_TIMEOUT;
break;
}
first_loop = 0;
grpc_pollset_work(&exec_ctx, &cc->pollset, &worker, now, deadline);
del_plucker(cc, tag, &worker);
}
done:
GRPC_SURFACE_TRACE_RETURNED_EVENT(cc, &ret);
GRPC_CQ_INTERNAL_UNREF(cc, "pluck");
grpc_exec_ctx_finish(&exec_ctx);
return ret;
}
static void on_pollset_destroy_done(grpc_exec_ctx *exec_ctx, void *arg,
int success) {
grpc_completion_queue *cc = arg;
GRPC_CQ_INTERNAL_UNREF(cc, "pollset_destroy");
}
static void on_pollset_shutdown_done(grpc_exec_ctx *exec_ctx, void *arg,
grpc_error *error) {
grpc_completion_queue *cq = (grpc_completion_queue *)arg;
GRPC_CQ_INTERNAL_UNREF(exec_ctx, cq, "pollset_destroy");
}
void grpc_alarm_destroy(grpc_alarm *alarm) {
grpc_alarm_cancel(alarm);
GRPC_CQ_INTERNAL_UNREF(alarm->cq, "alarm");
gpr_free(alarm);
}
static void on_pollset_destroy_done(void *arg) {
grpc_completion_queue *cc = arg;
GRPC_CQ_INTERNAL_UNREF(cc, "pollset_destroy");
}
