void grpc_deadline_state_init(grpc_exec_ctx* exec_ctx, grpc_call_element* elem,
grpc_call_element_args* args) {
grpc_deadline_state* deadline_state = elem->call_data;
memset(deadline_state, 0, sizeof(*deadline_state));
deadline_state->call_stack = args->call_stack;
gpr_mu_init(&deadline_state->timer_mu);
// Deadline will always be infinite on servers, so the timer will only be
// set on clients with a finite deadline.
const gpr_timespec deadline =
gpr_convert_clock_type(args->deadline, GPR_CLOCK_MONOTONIC);
if (gpr_time_cmp(deadline, gpr_inf_future(GPR_CLOCK_MONOTONIC)) != 0) {
// When the deadline passes, we indicate the failure by sending down
// an op with cancel_error set. However, we can't send down any ops
// until after the call stack is fully initialized. If we start the
// timer here, we have no guarantee that the timer won't pop before
// call stack initialization is finished. To avoid that problem, we
// create a closure to start the timer, and we schedule that closure
// to be run after call stack initialization is done.
struct start_timer_after_init_state* state = gpr_malloc(sizeof(*state));
state->elem = elem;
state->deadline = deadline;
grpc_closure_init(&state->closure, start_timer_after_init, state);
grpc_exec_ctx_sched(exec_ctx, &state->closure, GRPC_ERROR_NONE, NULL);
}
}
int gpr_cv_wait(gpr_cv *cv, gpr_mu *mu, gpr_timespec abs_deadline) {
int timeout = 0;
DWORD timeout_max_ms;
mu->locked = 0;
if (gpr_time_cmp(abs_deadline, gpr_inf_future(abs_deadline.clock_type)) ==
0) {
SleepConditionVariableCS(cv, &mu->cs, INFINITE);
} else {
abs_deadline = gpr_convert_clock_type(abs_deadline, GPR_CLOCK_REALTIME);
gpr_timespec now = gpr_now(abs_deadline.clock_type);
int64_t now_ms = (int64_t)now.tv_sec * 1000 + now.tv_nsec / 1000000;
int64_t deadline_ms =
(int64_t)abs_deadline.tv_sec * 1000 + abs_deadline.tv_nsec / 1000000;
if (now_ms >= deadline_ms) {
timeout = 1;
} else {
if ((deadline_ms - now_ms) >= INFINITE) {
timeout_max_ms = INFINITE - 1;
} else {
timeout_max_ms = (DWORD)(deadline_ms - now_ms);
}
timeout = (SleepConditionVariableCS(cv, &mu->cs, timeout_max_ms) == 0 &&
GetLastError() == ERROR_TIMEOUT);
}
}
mu->locked = 1;
return timeout;
}
/* Converts a wrapped time constant to a standard time. */
static VALUE grpc_rb_time_val_to_time(VALUE self) {
gpr_timespec *time_const = NULL;
gpr_timespec real_time;
TypedData_Get_Struct(self, gpr_timespec, &grpc_rb_timespec_data_type,
time_const);
real_time = gpr_convert_clock_type(*time_const, GPR_CLOCK_REALTIME);
return rb_funcall(rb_cTime, id_at, 2, INT2NUM(real_time.tv_sec),
INT2NUM(real_time.tv_nsec));
}
static void watcher_timer_init(grpc_exec_ctx *exec_ctx, void *arg,
grpc_error *error_ignored) {
watcher_timer_init_arg *wa = (watcher_timer_init_arg *)arg;
grpc_timer_init(exec_ctx, &wa->w->alarm,
gpr_convert_clock_type(wa->deadline, GPR_CLOCK_MONOTONIC),
&wa->w->on_timeout, gpr_now(GPR_CLOCK_MONOTONIC));
gpr_free(wa);
}
/* call-seq:
cq = CompletionQueue.new
tag = Object.new
timeout = 10
server.request_call(cqueue, tag, timeout)
Requests notification of a new call on a server. */
static VALUE grpc_rb_server_request_call(VALUE self, VALUE cqueue,
VALUE tag_new, VALUE timeout) {
grpc_rb_server *s = NULL;
grpc_call *call = NULL;
grpc_event ev;
grpc_call_error err;
request_call_stack st;
VALUE result;
gpr_timespec deadline;
TypedData_Get_Struct(self, grpc_rb_server, &grpc_rb_server_data_type, s);
if (s->wrapped == NULL) {
rb_raise(rb_eRuntimeError, "destroyed!");
return Qnil;
} else {
grpc_request_call_stack_init(&st);
/* call grpc_server_request_call, then wait for it to complete using
* pluck_event */
err = grpc_server_request_call(
s->wrapped, &call, &st.details, &st.md_ary,
grpc_rb_get_wrapped_completion_queue(cqueue),
grpc_rb_get_wrapped_completion_queue(cqueue),
ROBJECT(tag_new));
if (err != GRPC_CALL_OK) {
grpc_request_call_stack_cleanup(&st);
rb_raise(grpc_rb_eCallError,
"grpc_server_request_call failed: %s (code=%d)",
grpc_call_error_detail_of(err), err);
return Qnil;
}
ev = grpc_rb_completion_queue_pluck_event(cqueue, tag_new, timeout);
if (ev.type == GRPC_QUEUE_TIMEOUT) {
grpc_request_call_stack_cleanup(&st);
return Qnil;
}
if (!ev.success) {
grpc_request_call_stack_cleanup(&st);
rb_raise(grpc_rb_eCallError, "request_call completion failed");
return Qnil;
}
/* build the NewServerRpc struct result */
deadline = gpr_convert_clock_type(st.details.deadline, GPR_CLOCK_REALTIME);
result = rb_struct_new(
grpc_rb_sNewServerRpc, rb_str_new2(st.details.method),
rb_str_new2(st.details.host),
rb_funcall(rb_cTime, id_at, 2, INT2NUM(deadline.tv_sec),
INT2NUM(deadline.tv_nsec)),
grpc_rb_md_ary_to_h(&st.md_ary), grpc_rb_wrap_call(call), NULL);
grpc_request_call_stack_cleanup(&st);
return result;
}
return Qnil;
}
/* call-seq:
server.request_call
Requests notification of a new call on a server. */
static VALUE grpc_rb_server_request_call(VALUE self) {
grpc_rb_server *s = NULL;
grpc_call *call = NULL;
grpc_event ev;
grpc_call_error err;
request_call_stack st;
VALUE result;
void *tag = (void*)&st;
grpc_completion_queue *call_queue = grpc_completion_queue_create(NULL);
gpr_timespec deadline;
TypedData_Get_Struct(self, grpc_rb_server, &grpc_rb_server_data_type, s);
if (s->wrapped == NULL) {
rb_raise(rb_eRuntimeError, "destroyed!");
return Qnil;
}
grpc_request_call_stack_init(&st);
/* call grpc_server_request_call, then wait for it to complete using
* pluck_event */
err = grpc_server_request_call(
s->wrapped, &call, &st.details, &st.md_ary,
call_queue, s->queue, tag);
if (err != GRPC_CALL_OK) {
grpc_request_call_stack_cleanup(&st);
rb_raise(grpc_rb_eCallError,
"grpc_server_request_call failed: %s (code=%d)",
grpc_call_error_detail_of(err), err);
return Qnil;
}
ev = rb_completion_queue_pluck(s->queue, tag,
gpr_inf_future(GPR_CLOCK_REALTIME), NULL);
if (!ev.success) {
grpc_request_call_stack_cleanup(&st);
rb_raise(grpc_rb_eCallError, "request_call completion failed");
return Qnil;
}
/* build the NewServerRpc struct result */
deadline = gpr_convert_clock_type(st.details.deadline, GPR_CLOCK_REALTIME);
result = rb_struct_new(
grpc_rb_sNewServerRpc, grpc_rb_slice_to_ruby_string(st.details.method),
grpc_rb_slice_to_ruby_string(st.details.host),
rb_funcall(rb_cTime, id_at, 2, INT2NUM(deadline.tv_sec),
INT2NUM(deadline.tv_nsec / 1000)),
grpc_rb_md_ary_to_h(&st.md_ary), grpc_rb_wrap_call(call, call_queue),
NULL);
grpc_request_call_stack_cleanup(&st);
return result;
}
static void set_deadline_alarm(grpc_exec_ctx *exec_ctx, grpc_call *call,
gpr_timespec deadline) {
if (call->have_alarm) {
gpr_log(GPR_ERROR, "Attempt to set deadline alarm twice");
assert(0);
return;
}
GRPC_CALL_INTERNAL_REF(call, "alarm");
call->have_alarm = 1;
call->send_deadline = gpr_convert_clock_type(deadline, GPR_CLOCK_MONOTONIC);
grpc_timer_init(exec_ctx, &call->alarm, call->send_deadline, call_alarm, call,
gpr_now(GPR_CLOCK_MONOTONIC));
}
void grpc_alarm_set(grpc_alarm *alarm, grpc_completion_queue *cq,
gpr_timespec deadline, void *tag, void *reserved) {
grpc_exec_ctx exec_ctx = GRPC_EXEC_CTX_INIT;
GRPC_CQ_INTERNAL_REF(cq, "alarm");
alarm->cq = cq;
alarm->tag = tag;
GPR_ASSERT(grpc_cq_begin_op(cq, tag));
grpc_timer_init(&exec_ctx, &alarm->alarm,
gpr_convert_clock_type(deadline, GPR_CLOCK_MONOTONIC),
&alarm->on_alarm, gpr_now(GPR_CLOCK_MONOTONIC));
grpc_exec_ctx_finish(&exec_ctx);
}
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;
}
int gpr_cv_wait(gpr_cv* cv, gpr_mu* mu, gpr_timespec abs_deadline) {
int err = 0;
if (gpr_time_cmp(abs_deadline, gpr_inf_future(abs_deadline.clock_type)) ==
0) {
err = pthread_cond_wait(cv, mu);
} else {
struct timespec abs_deadline_ts;
abs_deadline = gpr_convert_clock_type(abs_deadline, GPR_CLOCK_REALTIME);
abs_deadline_ts.tv_sec = abs_deadline.tv_sec;
abs_deadline_ts.tv_nsec = abs_deadline.tv_nsec;
err = pthread_cond_timedwait(cv, mu, &abs_deadline_ts);
}
GPR_ASSERT(err == 0 || err == ETIMEDOUT || err == EAGAIN);
return err == ETIMEDOUT;
}
// Starts the deadline timer.
static void start_timer_if_needed(grpc_exec_ctx* exec_ctx,
grpc_call_element* elem,
gpr_timespec deadline) {
grpc_deadline_state* deadline_state = elem->call_data;
deadline = gpr_convert_clock_type(deadline, GPR_CLOCK_MONOTONIC);
if (gpr_time_cmp(deadline, gpr_inf_future(GPR_CLOCK_MONOTONIC)) != 0) {
// Take a reference to the call stack, to be owned by the timer.
GRPC_CALL_STACK_REF(deadline_state->call_stack, "deadline_timer");
gpr_mu_lock(&deadline_state->timer_mu);
deadline_state->timer_pending = true;
grpc_timer_init(exec_ctx, &deadline_state->timer, deadline, timer_callback,
elem, gpr_now(GPR_CLOCK_MONOTONIC));
gpr_mu_unlock(&deadline_state->timer_mu);
}
}
grpc_alarm *grpc_alarm_create(grpc_completion_queue *cq, gpr_timespec deadline,
void *tag) {
grpc_alarm *alarm = gpr_malloc(sizeof(grpc_alarm));
grpc_exec_ctx exec_ctx = GRPC_EXEC_CTX_INIT;
GRPC_CQ_INTERNAL_REF(cq, "alarm");
alarm->cq = cq;
alarm->tag = tag;
grpc_cq_begin_op(cq, tag);
grpc_timer_init(&exec_ctx, &alarm->alarm,
gpr_convert_clock_type(deadline, GPR_CLOCK_MONOTONIC),
alarm_cb, alarm, gpr_now(GPR_CLOCK_MONOTONIC));
grpc_exec_ctx_finish(&exec_ctx);
return alarm;
}
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;
}
void grpc_do_security_handshake(
grpc_exec_ctx *exec_ctx, tsi_handshaker *handshaker,
grpc_security_connector *connector, bool is_client_side,
grpc_endpoint *nonsecure_endpoint, gpr_slice_buffer *read_buffer,
gpr_timespec deadline, grpc_security_handshake_done_cb cb,
void *user_data) {
grpc_security_connector_handshake_list *handshake_node;
grpc_security_handshake *h = gpr_malloc(sizeof(grpc_security_handshake));
memset(h, 0, sizeof(grpc_security_handshake));
h->handshaker = handshaker;
h->connector = GRPC_SECURITY_CONNECTOR_REF(connector, "handshake");
h->is_client_side = is_client_side;
h->handshake_buffer_size = GRPC_INITIAL_HANDSHAKE_BUFFER_SIZE;
h->handshake_buffer = gpr_malloc(h->handshake_buffer_size);
h->wrapped_endpoint = nonsecure_endpoint;
h->user_data = user_data;
h->cb = cb;
gpr_ref_init(&h->refs, 2); /* timer and handshake proper each get a ref */
grpc_closure_init(&h->on_handshake_data_sent_to_peer,
on_handshake_data_sent_to_peer, h);
grpc_closure_init(&h->on_handshake_data_received_from_peer,
on_handshake_data_received_from_peer, h);
gpr_slice_buffer_init(&h->left_overs);
gpr_slice_buffer_init(&h->outgoing);
gpr_slice_buffer_init(&h->incoming);
if (read_buffer != NULL) {
gpr_slice_buffer_move_into(read_buffer, &h->incoming);
gpr_free(read_buffer);
}
if (!is_client_side) {
grpc_server_security_connector *server_connector =
(grpc_server_security_connector *)connector;
handshake_node = gpr_malloc(sizeof(grpc_security_connector_handshake_list));
handshake_node->handshake = h;
gpr_mu_lock(&server_connector->mu);
handshake_node->next = server_connector->handshaking_handshakes;
server_connector->handshaking_handshakes = handshake_node;
gpr_mu_unlock(&server_connector->mu);
}
send_handshake_bytes_to_peer(exec_ctx, h);
grpc_timer_init(exec_ctx, &h->timer,
gpr_convert_clock_type(deadline, GPR_CLOCK_MONOTONIC),
on_timeout, h, gpr_now(GPR_CLOCK_MONOTONIC));
}
static void tcp_client_connect_impl(grpc_exec_ctx *exec_ctx,
grpc_closure *closure, grpc_endpoint **ep,
grpc_pollset_set *interested_parties,
const grpc_channel_args *channel_args,
const grpc_resolved_address *resolved_addr,
gpr_timespec deadline) {
grpc_uv_tcp_connect *connect;
grpc_resource_quota *resource_quota = grpc_resource_quota_create(NULL);
(void)channel_args;
(void)interested_parties;
if (channel_args != NULL) {
for (size_t i = 0; i < channel_args->num_args; i++) {
if (0 == strcmp(channel_args->args[i].key, GRPC_ARG_RESOURCE_QUOTA)) {
grpc_resource_quota_unref_internal(exec_ctx, resource_quota);
resource_quota = grpc_resource_quota_ref_internal(
channel_args->args[i].value.pointer.p);
}
}
}
connect = gpr_malloc(sizeof(grpc_uv_tcp_connect));
memset(connect, 0, sizeof(grpc_uv_tcp_connect));
connect->closure = closure;
connect->endpoint = ep;
connect->tcp_handle = gpr_malloc(sizeof(uv_tcp_t));
connect->addr_name = grpc_sockaddr_to_uri(resolved_addr);
connect->resource_quota = resource_quota;
uv_tcp_init(uv_default_loop(), connect->tcp_handle);
connect->connect_req.data = connect;
// TODO(murgatroid99): figure out what the return value here means
uv_tcp_connect(&connect->connect_req, connect->tcp_handle,
(const struct sockaddr *)resolved_addr->addr,
uv_tc_on_connect);
grpc_closure_init(&connect->on_alarm, uv_tc_on_alarm, connect,
grpc_schedule_on_exec_ctx);
grpc_timer_init(exec_ctx, &connect->alarm,
gpr_convert_clock_type(deadline, GPR_CLOCK_MONOTONIC),
&connect->on_alarm, gpr_now(GPR_CLOCK_MONOTONIC));
}
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;
}
/* Constructor for call_data */
static grpc_error *cc_init_call_elem(grpc_exec_ctx *exec_ctx,
grpc_call_element *elem,
grpc_call_element_args *args) {
channel_data *chand = elem->channel_data;
call_data *calld = elem->call_data;
// Initialize data members.
grpc_deadline_state_init(exec_ctx, elem, args->call_stack);
calld->path = GRPC_MDSTR_REF(args->path);
calld->call_start_time = args->start_time;
calld->deadline = gpr_convert_clock_type(args->deadline, GPR_CLOCK_MONOTONIC);
calld->wait_for_ready_from_service_config = WAIT_FOR_READY_UNSET;
calld->cancel_error = GRPC_ERROR_NONE;
gpr_atm_rel_store(&calld->subchannel_call, 0);
gpr_mu_init(&calld->mu);
calld->connected_subchannel = NULL;
calld->waiting_ops = NULL;
calld->waiting_ops_count = 0;
calld->waiting_ops_capacity = 0;
calld->creation_phase = GRPC_SUBCHANNEL_CALL_HOLDER_NOT_CREATING;
calld->owning_call = args->call_stack;
calld->pollent = NULL;
// If the resolver has already returned results, then we can access
// the service config parameters immediately. Otherwise, we need to
// defer that work until the resolver returns an initial result.
// TODO(roth): This code is almost but not quite identical to the code
// in read_service_config() above. It would be nice to find a way to
// combine them, to avoid having to maintain it twice.
gpr_mu_lock(&chand->mu);
if (chand->lb_policy != NULL) {
// We already have a resolver result, so check for service config.
if (chand->method_params_table != NULL) {
grpc_mdstr_hash_table *method_params_table =
grpc_mdstr_hash_table_ref(chand->method_params_table);
gpr_mu_unlock(&chand->mu);
method_parameters *method_params =
grpc_method_config_table_get(method_params_table, args->path);
if (method_params != NULL) {
if (gpr_time_cmp(method_params->timeout,
gpr_time_0(GPR_CLOCK_MONOTONIC)) != 0) {
gpr_timespec per_method_deadline =
gpr_time_add(calld->call_start_time, method_params->timeout);
calld->deadline = gpr_time_min(calld->deadline, per_method_deadline);
}
if (method_params->wait_for_ready != WAIT_FOR_READY_UNSET) {
calld->wait_for_ready_from_service_config =
method_params->wait_for_ready;
}
}
grpc_mdstr_hash_table_unref(method_params_table);
} else {
gpr_mu_unlock(&chand->mu);
}
} else {
// We don't yet have a resolver result, so register a callback to
// get the service config data once the resolver returns.
// Take a reference to the call stack to be owned by the callback.
GRPC_CALL_STACK_REF(calld->owning_call, "read_service_config");
grpc_closure_init(&calld->read_service_config, read_service_config, elem);
grpc_closure_list_append(&chand->waiting_for_config_closures,
&calld->read_service_config, GRPC_ERROR_NONE);
gpr_mu_unlock(&chand->mu);
}
// Start the deadline timer with the current deadline value. If we
// do not yet have service config data, then the timer may be reset
// later.
grpc_deadline_state_start(exec_ctx, elem, calld->deadline);
return GRPC_ERROR_NONE;
}
grpc_call *grpc_call_create(grpc_channel *channel, grpc_call *parent_call,
uint32_t propagation_mask,
grpc_completion_queue *cq,
const void *server_transport_data,
grpc_mdelem **add_initial_metadata,
size_t add_initial_metadata_count,
gpr_timespec send_deadline) {
size_t i, j;
grpc_channel_stack *channel_stack = grpc_channel_get_channel_stack(channel);
grpc_exec_ctx exec_ctx = GRPC_EXEC_CTX_INIT;
grpc_call *call;
GPR_TIMER_BEGIN("grpc_call_create", 0);
call = gpr_malloc(sizeof(grpc_call) + channel_stack->call_stack_size);
memset(call, 0, sizeof(grpc_call));
gpr_mu_init(&call->mu);
call->channel = channel;
call->cq = cq;
call->parent = parent_call;
call->is_client = server_transport_data == NULL;
if (call->is_client) {
GPR_ASSERT(add_initial_metadata_count < MAX_SEND_EXTRA_METADATA_COUNT);
for (i = 0; i < add_initial_metadata_count; i++) {
call->send_extra_metadata[i].md = add_initial_metadata[i];
}
call->send_extra_metadata_count = (int)add_initial_metadata_count;
} else {
GPR_ASSERT(add_initial_metadata_count == 0);
call->send_extra_metadata_count = 0;
}
for (i = 0; i < 2; i++) {
for (j = 0; j < 2; j++) {
call->metadata_batch[i][j].deadline = gpr_inf_future(GPR_CLOCK_MONOTONIC);
}
}
call->send_deadline = send_deadline;
GRPC_CHANNEL_INTERNAL_REF(channel, "call");
/* initial refcount dropped by grpc_call_destroy */
grpc_call_stack_init(&exec_ctx, channel_stack, 1, destroy_call, call,
call->context, server_transport_data,
CALL_STACK_FROM_CALL(call));
if (cq != NULL) {
GRPC_CQ_INTERNAL_REF(cq, "bind");
grpc_call_stack_set_pollset(&exec_ctx, CALL_STACK_FROM_CALL(call),
grpc_cq_pollset(cq));
}
if (parent_call != NULL) {
GRPC_CALL_INTERNAL_REF(parent_call, "child");
GPR_ASSERT(call->is_client);
GPR_ASSERT(!parent_call->is_client);
gpr_mu_lock(&parent_call->mu);
if (propagation_mask & GRPC_PROPAGATE_DEADLINE) {
send_deadline = gpr_time_min(
gpr_convert_clock_type(send_deadline,
parent_call->send_deadline.clock_type),
parent_call->send_deadline);
}
/* for now GRPC_PROPAGATE_TRACING_CONTEXT *MUST* be passed with
* GRPC_PROPAGATE_STATS_CONTEXT */
/* TODO(ctiller): This should change to use the appropriate census start_op
* call. */
if (propagation_mask & GRPC_PROPAGATE_CENSUS_TRACING_CONTEXT) {
GPR_ASSERT(propagation_mask & GRPC_PROPAGATE_CENSUS_STATS_CONTEXT);
grpc_call_context_set(call, GRPC_CONTEXT_TRACING,
parent_call->context[GRPC_CONTEXT_TRACING].value,
NULL);
} else {
GPR_ASSERT(propagation_mask & GRPC_PROPAGATE_CENSUS_STATS_CONTEXT);
}
if (propagation_mask & GRPC_PROPAGATE_CANCELLATION) {
call->cancellation_is_inherited = 1;
}
if (parent_call->first_child == NULL) {
parent_call->first_child = call;
call->sibling_next = call->sibling_prev = call;
} else {
call->sibling_next = parent_call->first_child;
call->sibling_prev = parent_call->first_child->sibling_prev;
call->sibling_next->sibling_prev = call->sibling_prev->sibling_next =
call;
}
gpr_mu_unlock(&parent_call->mu);
}
if (gpr_time_cmp(send_deadline, gpr_inf_future(send_deadline.clock_type)) !=
0) {
set_deadline_alarm(&exec_ctx, call, send_deadline);
}
grpc_exec_ctx_finish(&exec_ctx);
GPR_TIMER_END("grpc_call_create", 0);
return call;
}
double pygrpc_cast_gpr_timespec_to_double(gpr_timespec timespec) {
timespec = gpr_convert_clock_type(timespec, GPR_CLOCK_REALTIME);
return timespec.tv_sec + 1e-9*timespec.tv_nsec;
}
GPR_EXPORT gpr_timespec GPR_CALLTYPE gprsharp_convert_clock_type(gpr_timespec t, gpr_clock_type target_clock) {
return gpr_convert_clock_type(t, target_clock);
}
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 tcp_client_connect_impl(grpc_exec_ctx *exec_ctx,
grpc_closure *closure, grpc_endpoint **ep,
grpc_pollset_set *interested_parties,
const grpc_channel_args *channel_args,
const grpc_resolved_address *addr,
gpr_timespec deadline) {
int fd;
grpc_dualstack_mode dsmode;
int err;
async_connect *ac;
grpc_resolved_address addr6_v4mapped;
grpc_resolved_address addr4_copy;
grpc_fd *fdobj;
char *name;
char *addr_str;
grpc_error *error;
*ep = NULL;
/* Use dualstack sockets where available. */
if (grpc_sockaddr_to_v4mapped(addr, &addr6_v4mapped)) {
addr = &addr6_v4mapped;
}
error = grpc_create_dualstack_socket(addr, SOCK_STREAM, 0, &dsmode, &fd);
if (error != GRPC_ERROR_NONE) {
grpc_closure_sched(exec_ctx, closure, error);
return;
}
if (dsmode == GRPC_DSMODE_IPV4) {
/* If we got an AF_INET socket, map the address back to IPv4. */
GPR_ASSERT(grpc_sockaddr_is_v4mapped(addr, &addr4_copy));
addr = &addr4_copy;
}
if ((error = prepare_socket(addr, fd, channel_args)) != GRPC_ERROR_NONE) {
grpc_closure_sched(exec_ctx, closure, error);
return;
}
do {
GPR_ASSERT(addr->len < ~(socklen_t)0);
err =
connect(fd, (const struct sockaddr *)addr->addr, (socklen_t)addr->len);
} while (err < 0 && errno == EINTR);
addr_str = grpc_sockaddr_to_uri(addr);
gpr_asprintf(&name, "tcp-client:%s", addr_str);
fdobj = grpc_fd_create(fd, name);
if (err >= 0) {
*ep =
grpc_tcp_client_create_from_fd(exec_ctx, fdobj, channel_args, addr_str);
grpc_closure_sched(exec_ctx, closure, GRPC_ERROR_NONE);
goto done;
}
if (errno != EWOULDBLOCK && errno != EINPROGRESS) {
grpc_fd_orphan(exec_ctx, fdobj, NULL, NULL, "tcp_client_connect_error");
grpc_closure_sched(exec_ctx, closure, GRPC_OS_ERROR(errno, "connect"));
goto done;
}
grpc_pollset_set_add_fd(exec_ctx, interested_parties, fdobj);
ac = gpr_malloc(sizeof(async_connect));
ac->closure = closure;
ac->ep = ep;
ac->fd = fdobj;
ac->interested_parties = interested_parties;
ac->addr_str = addr_str;
addr_str = NULL;
gpr_mu_init(&ac->mu);
ac->refs = 2;
grpc_closure_init(&ac->write_closure, on_writable, ac,
grpc_schedule_on_exec_ctx);
ac->channel_args = grpc_channel_args_copy(channel_args);
if (grpc_tcp_trace) {
gpr_log(GPR_DEBUG, "CLIENT_CONNECT: %s: asynchronously connecting",
ac->addr_str);
}
gpr_mu_lock(&ac->mu);
grpc_closure_init(&ac->on_alarm, tc_on_alarm, ac, grpc_schedule_on_exec_ctx);
grpc_timer_init(exec_ctx, &ac->alarm,
gpr_convert_clock_type(deadline, GPR_CLOCK_MONOTONIC),
&ac->on_alarm, gpr_now(GPR_CLOCK_MONOTONIC));
grpc_fd_notify_on_write(exec_ctx, ac->fd, &ac->write_closure);
gpr_mu_unlock(&ac->mu);
done:
gpr_free(name);
gpr_free(addr_str);
}
void grpc_tcp_client_connect(grpc_exec_ctx *exec_ctx, grpc_closure *closure,
grpc_endpoint **ep,
grpc_pollset_set *interested_parties,
const struct sockaddr *addr, size_t addr_len,
gpr_timespec deadline) {
int fd;
grpc_dualstack_mode dsmode;
int err;
async_connect *ac;
struct sockaddr_in6 addr6_v4mapped;
struct sockaddr_in addr4_copy;
grpc_fd *fdobj;
char *name;
char *addr_str;
*ep = NULL;
/* Use dualstack sockets where available. */
if (grpc_sockaddr_to_v4mapped(addr, &addr6_v4mapped)) {
addr = (const struct sockaddr *)&addr6_v4mapped;
addr_len = sizeof(addr6_v4mapped);
}
fd = grpc_create_dualstack_socket(addr, SOCK_STREAM, 0, &dsmode);
if (fd < 0) {
gpr_log(GPR_ERROR, "Unable to create socket: %s", strerror(errno));
}
if (dsmode == GRPC_DSMODE_IPV4) {
/* If we got an AF_INET socket, map the address back to IPv4. */
GPR_ASSERT(grpc_sockaddr_is_v4mapped(addr, &addr4_copy));
addr = (struct sockaddr *)&addr4_copy;
addr_len = sizeof(addr4_copy);
}
if (!prepare_socket(addr, fd)) {
grpc_exec_ctx_enqueue(exec_ctx, closure, 0);
return;
}
do {
GPR_ASSERT(addr_len < ~(socklen_t)0);
err = connect(fd, addr, (socklen_t)addr_len);
} while (err < 0 && errno == EINTR);
addr_str = grpc_sockaddr_to_uri(addr);
gpr_asprintf(&name, "tcp-client:%s", addr_str);
fdobj = grpc_fd_create(fd, name);
if (err >= 0) {
*ep = grpc_tcp_create(fdobj, GRPC_TCP_DEFAULT_READ_SLICE_SIZE, addr_str);
grpc_exec_ctx_enqueue(exec_ctx, closure, 1);
goto done;
}
if (errno != EWOULDBLOCK && errno != EINPROGRESS) {
gpr_log(GPR_ERROR, "connect error to '%s': %s", addr_str, strerror(errno));
grpc_fd_orphan(exec_ctx, fdobj, NULL, "tcp_client_connect_error");
grpc_exec_ctx_enqueue(exec_ctx, closure, 0);
goto done;
}
grpc_pollset_set_add_fd(exec_ctx, interested_parties, fdobj);
ac = gpr_malloc(sizeof(async_connect));
ac->closure = closure;
ac->ep = ep;
ac->fd = fdobj;
ac->interested_parties = interested_parties;
ac->addr_str = addr_str;
addr_str = NULL;
gpr_mu_init(&ac->mu);
ac->refs = 2;
ac->write_closure.cb = on_writable;
ac->write_closure.cb_arg = ac;
if (grpc_tcp_trace) {
gpr_log(GPR_DEBUG, "CLIENT_CONNECT: %s: asynchronously connecting",
ac->addr_str);
}
gpr_mu_lock(&ac->mu);
grpc_alarm_init(exec_ctx, &ac->alarm,
gpr_convert_clock_type(deadline, GPR_CLOCK_MONOTONIC),
tc_on_alarm, ac, gpr_now(GPR_CLOCK_MONOTONIC));
grpc_fd_notify_on_write(exec_ctx, ac->fd, &ac->write_closure);
gpr_mu_unlock(&ac->mu);
done:
gpr_free(name);
gpr_free(addr_str);
}
