void grpc_channel_internal_unref(grpc_exec_ctx *exec_ctx, grpc_channel *channel,
const char *reason) {
gpr_log(GPR_DEBUG, "CHANNEL: unref %p %d -> %d [%s]", channel,
channel->refs.count, channel->refs.count - 1, reason);
#else
void grpc_channel_internal_unref(grpc_exec_ctx *exec_ctx,
grpc_channel *channel) {
#endif
if (gpr_unref(&channel->refs)) {
destroy_channel(exec_ctx, channel);
}
}
void grpc_channel_destroy(grpc_channel *channel) {
grpc_transport_op op;
grpc_channel_element *elem;
grpc_exec_ctx exec_ctx = GRPC_EXEC_CTX_INIT;
GRPC_API_TRACE("grpc_channel_destroy(channel=%p)", 1, (channel));
memset(&op, 0, sizeof(op));
op.disconnect = 1;
elem = grpc_channel_stack_element(CHANNEL_STACK_FROM_CHANNEL(channel), 0);
elem->filter->start_transport_op(&exec_ctx, elem, &op);
GRPC_CHANNEL_INTERNAL_UNREF(&exec_ctx, channel, "channel");
grpc_exec_ctx_finish(&exec_ctx);
}
void grpc_channel_get_info(grpc_channel *channel,
const grpc_channel_info *channel_info) {
grpc_exec_ctx exec_ctx = GRPC_EXEC_CTX_INIT;
grpc_channel_element *elem =
grpc_channel_stack_element(CHANNEL_STACK_FROM_CHANNEL(channel), 0);
elem->filter->get_channel_info(&exec_ctx, elem, channel_info);
grpc_exec_ctx_finish(&exec_ctx);
}
static void test_create_channel_stack(void) {
const grpc_channel_filter filter = {
call_func,
channel_func,
sizeof(int),
call_init_func,
grpc_call_stack_ignore_set_pollset_or_pollset_set,
call_destroy_func,
sizeof(int),
channel_init_func,
channel_destroy_func,
get_peer,
"some_test_filter"};
const grpc_channel_filter *filters = &filter;
grpc_channel_stack *channel_stack;
grpc_call_stack *call_stack;
grpc_channel_element *channel_elem;
grpc_call_element *call_elem;
grpc_arg arg;
grpc_channel_args chan_args;
int *channel_data;
int *call_data;
grpc_exec_ctx exec_ctx = GRPC_EXEC_CTX_INIT;
arg.type = GRPC_ARG_INTEGER;
arg.key = "test_key";
arg.value.integer = 42;
chan_args.num_args = 1;
chan_args.args = &arg;
channel_stack = gpr_malloc(grpc_channel_stack_size(&filters, 1));
grpc_channel_stack_init(&exec_ctx, 1, free_channel, channel_stack, &filters,
1, &chan_args, NULL, "test", channel_stack);
GPR_ASSERT(channel_stack->count == 1);
channel_elem = grpc_channel_stack_element(channel_stack, 0);
channel_data = (int *)channel_elem->channel_data;
GPR_ASSERT(*channel_data == 0);
call_stack = gpr_malloc(channel_stack->call_stack_size);
grpc_call_stack_init(&exec_ctx, channel_stack, 1, free_call, call_stack, NULL,
NULL, call_stack);
GPR_ASSERT(call_stack->count == 1);
call_elem = grpc_call_stack_element(call_stack, 0);
GPR_ASSERT(call_elem->filter == channel_elem->filter);
GPR_ASSERT(call_elem->channel_data == channel_elem->channel_data);
call_data = (int *)call_elem->call_data;
GPR_ASSERT(*call_data == 0);
GPR_ASSERT(*channel_data == 1);
GRPC_CALL_STACK_UNREF(&exec_ctx, call_stack, "done");
grpc_exec_ctx_flush(&exec_ctx);
GPR_ASSERT(*channel_data == 2);
GRPC_CHANNEL_STACK_UNREF(&exec_ctx, channel_stack, "done");
grpc_exec_ctx_finish(&exec_ctx);
}
static void finish_shutdown_channel(void *cd, int success) {
channel_data *chand = cd;
grpc_channel_op op;
op.type = GRPC_CHANNEL_DISCONNECT;
op.dir = GRPC_CALL_DOWN;
channel_op(grpc_channel_stack_element(
grpc_channel_get_channel_stack(chand->channel), 0),
NULL, &op);
grpc_channel_internal_unref(chand->channel);
}
static void test_create_channel_stack(void) {
const grpc_channel_filter filter = {
call_func, channel_func, sizeof(int), call_init_func, call_destroy_func,
sizeof(int), channel_init_func, channel_destroy_func, "some_test_filter"};
const grpc_channel_filter *filters = &filter;
grpc_channel_stack *channel_stack;
grpc_call_stack *call_stack;
grpc_channel_element *channel_elem;
grpc_call_element *call_elem;
grpc_arg arg;
grpc_channel_args chan_args;
grpc_mdctx *metadata_context;
int *channel_data;
int *call_data;
LOG_TEST_NAME();
metadata_context = grpc_mdctx_create();
arg.type = GRPC_ARG_INTEGER;
arg.key = "test_key";
arg.value.integer = 42;
chan_args.num_args = 1;
chan_args.args = &arg;
channel_stack = gpr_malloc(grpc_channel_stack_size(&filters, 1));
grpc_channel_stack_init(&filters, 1, &chan_args, metadata_context,
channel_stack);
GPR_ASSERT(channel_stack->count == 1);
channel_elem = grpc_channel_stack_element(channel_stack, 0);
channel_data = (int *)channel_elem->channel_data;
GPR_ASSERT(*channel_data == 0);
call_stack = gpr_malloc(channel_stack->call_stack_size);
grpc_call_stack_init(channel_stack, NULL, NULL, call_stack);
GPR_ASSERT(call_stack->count == 1);
call_elem = grpc_call_stack_element(call_stack, 0);
GPR_ASSERT(call_elem->filter == channel_elem->filter);
GPR_ASSERT(call_elem->channel_data == channel_elem->channel_data);
call_data = (int *)call_elem->call_data;
GPR_ASSERT(*call_data == 0);
GPR_ASSERT(*channel_data == 1);
grpc_call_stack_destroy(call_stack);
gpr_free(call_stack);
GPR_ASSERT(*channel_data == 2);
grpc_channel_stack_destroy(channel_stack);
gpr_free(channel_stack);
grpc_mdctx_unref(metadata_context);
}
static void finish_shutdown_channel(void *p, int success) {
shutdown_channel_args *sca = p;
grpc_channel_op op;
if (sca->send_goaway) {
op.type = GRPC_CHANNEL_GOAWAY;
op.dir = GRPC_CALL_DOWN;
op.data.goaway.status = GRPC_STATUS_OK;
op.data.goaway.message = gpr_slice_from_copied_string("Server shutdown");
channel_op(grpc_channel_stack_element(
grpc_channel_get_channel_stack(sca->chand->channel), 0),
NULL, &op);
}
if (sca->send_disconnect) {
op.type = GRPC_CHANNEL_DISCONNECT;
op.dir = GRPC_CALL_DOWN;
channel_op(grpc_channel_stack_element(
grpc_channel_get_channel_stack(sca->chand->channel), 0),
NULL, &op);
}
GRPC_CHANNEL_INTERNAL_UNREF(sca->chand->channel, "shutdown");
gpr_free(sca);
}
void grpc_channel_ping(grpc_channel *channel, grpc_completion_queue *cq,
void *tag, void *reserved) {
grpc_transport_op op;
ping_result *pr = gpr_malloc(sizeof(*pr));
grpc_channel_element *top_elem =
grpc_channel_stack_element(grpc_channel_get_channel_stack(channel), 0);
grpc_exec_ctx exec_ctx = GRPC_EXEC_CTX_INIT;
GPR_ASSERT(reserved == NULL);
memset(&op, 0, sizeof(op));
pr->tag = tag;
pr->cq = cq;
grpc_closure_init(&pr->closure, ping_done, pr);
op.send_ping = &pr->closure;
op.bind_pollset = grpc_cq_pollset(cq);
grpc_cq_begin_op(cq, tag);
top_elem->filter->start_transport_op(&exec_ctx, top_elem, &op);
grpc_exec_ctx_finish(&exec_ctx);
}
void grpc_channel_destroy(grpc_channel *channel) {
grpc_channel_op op;
grpc_channel_element *elem;
elem = grpc_channel_stack_element(CHANNEL_STACK_FROM_CHANNEL(channel), 0);
op.type = GRPC_CHANNEL_GOAWAY;
op.dir = GRPC_CALL_DOWN;
op.data.goaway.status = GRPC_STATUS_OK;
op.data.goaway.message = gpr_slice_from_copied_string("Client disconnect");
elem->filter->channel_op(elem, NULL, &op);
op.type = GRPC_CHANNEL_DISCONNECT;
op.dir = GRPC_CALL_DOWN;
elem->filter->channel_op(elem, NULL, &op);
grpc_channel_internal_unref(channel);
}
static void destroy_channel(grpc_exec_ctx *exec_ctx, channel_data *chand) {
if (is_channel_orphaned(chand)) return;
GPR_ASSERT(chand->server != NULL);
orphan_channel(chand);
server_ref(chand->server);
maybe_finish_shutdown(exec_ctx, chand->server);
chand->finish_destroy_channel_closure.cb = finish_destroy_channel;
chand->finish_destroy_channel_closure.cb_arg = chand;
grpc_transport_op op;
memset(&op, 0, sizeof(op));
op.set_accept_stream = true;
op.on_consumed = &chand->finish_destroy_channel_closure;
grpc_channel_next_op(exec_ctx,
grpc_channel_stack_element(
grpc_channel_get_channel_stack(chand->channel), 0),
&op);
}
void grpc_channel_ping(grpc_channel *channel, grpc_completion_queue *cq,
void *tag, void *reserved) {
GRPC_API_TRACE("grpc_channel_ping(channel=%p, cq=%p, tag=%p, reserved=%p)", 4,
(channel, cq, tag, reserved));
grpc_transport_op *op = grpc_make_transport_op(NULL);
ping_result *pr = gpr_malloc(sizeof(*pr));
grpc_channel_element *top_elem =
grpc_channel_stack_element(grpc_channel_get_channel_stack(channel), 0);
grpc_exec_ctx exec_ctx = GRPC_EXEC_CTX_INIT;
GPR_ASSERT(reserved == NULL);
pr->tag = tag;
pr->cq = cq;
grpc_closure_init(&pr->closure, ping_done, pr);
op->send_ping = &pr->closure;
op->bind_pollset = grpc_cq_pollset(cq);
grpc_cq_begin_op(cq, tag);
top_elem->filter->start_transport_op(&exec_ctx, top_elem, op);
grpc_exec_ctx_finish(&exec_ctx);
}
static void send_shutdown(grpc_exec_ctx *exec_ctx, grpc_channel *channel,
int send_goaway, grpc_error *send_disconnect) {
grpc_transport_op op;
struct shutdown_cleanup_args *sc;
grpc_channel_element *elem;
memset(&op, 0, sizeof(op));
op.send_goaway = send_goaway;
sc = gpr_malloc(sizeof(*sc));
sc->slice = gpr_slice_from_copied_string("Server shutdown");
op.goaway_message = &sc->slice;
op.goaway_status = GRPC_STATUS_OK;
op.disconnect_with_error = send_disconnect;
grpc_closure_init(&sc->closure, shutdown_cleanup, sc);
op.on_consumed = &sc->closure;
elem = grpc_channel_stack_element(grpc_channel_get_channel_stack(channel), 0);
elem->filter->start_transport_op(exec_ctx, elem, &op);
}
grpc_channel *grpc_lame_client_channel_create(const char *target,
grpc_status_code error_code,
const char *error_message) {
grpc_exec_ctx exec_ctx = GRPC_EXEC_CTX_INIT;
grpc_channel_element *elem;
channel_data *chand;
grpc_channel *channel = grpc_channel_create(&exec_ctx, target, NULL,
GRPC_CLIENT_LAME_CHANNEL, NULL);
elem = grpc_channel_stack_element(grpc_channel_get_channel_stack(channel), 0);
GRPC_API_TRACE(
"grpc_lame_client_channel_create(target=%s, error_code=%d, "
"error_message=%s)",
3, (target, (int)error_code, error_message));
GPR_ASSERT(elem->filter == &grpc_lame_filter);
chand = (channel_data *)elem->channel_data;
chand->error_code = error_code;
chand->error_message = error_message;
grpc_exec_ctx_finish(&exec_ctx);
return channel;
}
static void channel_connectivity_changed(grpc_exec_ctx *exec_ctx, void *cd,
grpc_error *error) {
channel_data *chand = cd;
grpc_server *server = chand->server;
if (chand->connectivity_state != GRPC_CHANNEL_SHUTDOWN) {
grpc_transport_op op;
memset(&op, 0, sizeof(op));
op.on_connectivity_state_change = &chand->channel_connectivity_changed,
op.connectivity_state = &chand->connectivity_state;
grpc_channel_next_op(exec_ctx,
grpc_channel_stack_element(
grpc_channel_get_channel_stack(chand->channel), 0),
&op);
} else {
gpr_mu_lock(&server->mu_global);
destroy_channel(exec_ctx, chand);
gpr_mu_unlock(&server->mu_global);
GRPC_CHANNEL_INTERNAL_UNREF(exec_ctx, chand->channel, "connectivity");
}
}
grpc_channel *grpc_lame_client_channel_create(const char *target,
grpc_status_code error_code,
const char *error_message) {
grpc_channel *channel;
grpc_channel_element *elem;
channel_data *chand;
grpc_exec_ctx exec_ctx = GRPC_EXEC_CTX_INIT;
static const grpc_channel_filter *filters[] = {&lame_filter};
channel = grpc_channel_create_from_filters(&exec_ctx, target, filters, 1,
NULL, grpc_mdctx_create(), 1);
elem = grpc_channel_stack_element(grpc_channel_get_channel_stack(channel), 0);
GRPC_API_TRACE(
"grpc_lame_client_channel_create(target=%s, error_code=%d, "
"error_message=%s)",
3, (target, (int)error_code, error_message));
GPR_ASSERT(elem->filter == &lame_filter);
chand = (channel_data *)elem->channel_data;
chand->error_code = error_code;
chand->error_message = error_message;
grpc_exec_ctx_finish(&exec_ctx);
return channel;
}
void test_transport_op(grpc_channel *channel) {
grpc_transport_op *op;
grpc_channel_element *elem;
grpc_connectivity_state state = GRPC_CHANNEL_IDLE;
grpc_exec_ctx exec_ctx = GRPC_EXEC_CTX_INIT;
grpc_closure_init(&transport_op_cb, verify_connectivity, &state,
grpc_schedule_on_exec_ctx);
op = grpc_make_transport_op(NULL);
op->on_connectivity_state_change = &transport_op_cb;
op->connectivity_state = &state;
elem = grpc_channel_stack_element(grpc_channel_get_channel_stack(channel), 0);
elem->filter->start_transport_op(&exec_ctx, elem, op);
grpc_exec_ctx_finish(&exec_ctx);
grpc_closure_init(&transport_op_cb, do_nothing, NULL,
grpc_schedule_on_exec_ctx);
op = grpc_make_transport_op(&transport_op_cb);
elem->filter->start_transport_op(&exec_ctx, elem, op);
grpc_exec_ctx_finish(&exec_ctx);
}
void grpc_channel_internal_unref(grpc_channel *channel, const char *reason) {
gpr_log(GPR_DEBUG, "CHANNEL: unref %p %d -> %d [%s]", channel,
channel->refs.count, channel->refs.count - 1, reason);
#else
void grpc_channel_internal_unref(grpc_channel *channel) {
#endif
if (gpr_unref(&channel->refs)) {
channel->destroy_closure.cb = destroy_channel;
channel->destroy_closure.cb_arg = channel;
grpc_iomgr_add_callback(&channel->destroy_closure);
}
}
void grpc_channel_destroy(grpc_channel *channel) {
grpc_transport_op op;
grpc_channel_element *elem;
memset(&op, 0, sizeof(op));
op.disconnect = 1;
elem = grpc_channel_stack_element(CHANNEL_STACK_FROM_CHANNEL(channel), 0);
elem->filter->start_transport_op(elem, &op);
GRPC_CHANNEL_INTERNAL_UNREF(channel, "channel");
}
grpc_channel_element *grpc_channel_stack_last_element(
grpc_channel_stack *channel_stack) {
return grpc_channel_stack_element(channel_stack, channel_stack->count - 1);
}
static void shutdown_internal(grpc_server *server, gpr_uint8 have_shutdown_tag,
void *shutdown_tag) {
listener *l;
requested_call_array requested_calls;
channel_data **channels;
channel_data *c;
size_t nchannels;
size_t i, j;
grpc_channel_op op;
grpc_channel_element *elem;
registered_method *rm;
/* lock, and gather up some stuff to do */
gpr_mu_lock(&server->mu);
if (have_shutdown_tag) {
for (i = 0; i < server->cq_count; i++) {
grpc_cq_begin_op(server->cqs[i], NULL, GRPC_SERVER_SHUTDOWN);
}
server->shutdown_tags =
gpr_realloc(server->shutdown_tags,
sizeof(void *) * (server->num_shutdown_tags + 1));
server->shutdown_tags[server->num_shutdown_tags++] = shutdown_tag;
}
if (server->shutdown) {
gpr_mu_unlock(&server->mu);
return;
}
nchannels = 0;
for (c = server->root_channel_data.next; c != &server->root_channel_data;
c = c->next) {
nchannels++;
}
channels = gpr_malloc(sizeof(channel_data *) * nchannels);
i = 0;
for (c = server->root_channel_data.next; c != &server->root_channel_data;
c = c->next) {
grpc_channel_internal_ref(c->channel);
channels[i] = c;
i++;
}
/* collect all unregistered then registered calls */
requested_calls = server->requested_calls;
memset(&server->requested_calls, 0, sizeof(server->requested_calls));
for (rm = server->registered_methods; rm; rm = rm->next) {
if (requested_calls.count + rm->requested.count >
requested_calls.capacity) {
requested_calls.capacity =
GPR_MAX(requested_calls.count + rm->requested.count,
2 * requested_calls.capacity);
requested_calls.calls =
gpr_realloc(requested_calls.calls, sizeof(*requested_calls.calls) *
requested_calls.capacity);
}
memcpy(requested_calls.calls + requested_calls.count, rm->requested.calls,
sizeof(*requested_calls.calls) * rm->requested.count);
requested_calls.count += rm->requested.count;
gpr_free(rm->requested.calls);
memset(&rm->requested, 0, sizeof(rm->requested));
}
server->shutdown = 1;
if (server->lists[ALL_CALLS] == NULL) {
for (i = 0; i < server->num_shutdown_tags; i++) {
for (j = 0; j < server->cq_count; j++) {
grpc_cq_end_server_shutdown(server->cqs[j], server->shutdown_tags[i]);
}
}
}
gpr_mu_unlock(&server->mu);
for (i = 0; i < nchannels; i++) {
c = channels[i];
elem = grpc_channel_stack_element(
grpc_channel_get_channel_stack(c->channel), 0);
op.type = GRPC_CHANNEL_GOAWAY;
op.dir = GRPC_CALL_DOWN;
op.data.goaway.status = GRPC_STATUS_OK;
op.data.goaway.message = gpr_slice_from_copied_string("Server shutdown");
elem->filter->channel_op(elem, NULL, &op);
grpc_channel_internal_unref(c->channel);
}
gpr_free(channels);
/* terminate all the requested calls */
for (i = 0; i < requested_calls.count; i++) {
fail_call(server, &requested_calls.calls[i]);
}
gpr_free(requested_calls.calls);
/* Shutdown listeners */
for (l = server->listeners; l; l = l->next) {
l->destroy(server, l->arg);
}
}
grpc_transport_setup_result grpc_server_setup_transport(
grpc_server *s, grpc_transport *transport,
grpc_channel_filter const **extra_filters, size_t num_extra_filters,
grpc_mdctx *mdctx) {
size_t num_filters = s->channel_filter_count + num_extra_filters + 1;
grpc_channel_filter const **filters =
gpr_malloc(sizeof(grpc_channel_filter *) * num_filters);
size_t i;
size_t num_registered_methods;
size_t alloc;
registered_method *rm;
channel_registered_method *crm;
grpc_channel *channel;
channel_data *chand;
grpc_mdstr *host;
grpc_mdstr *method;
gpr_uint32 hash;
gpr_uint32 slots;
gpr_uint32 probes;
gpr_uint32 max_probes = 0;
grpc_transport_setup_result result;
for (i = 0; i < s->channel_filter_count; i++) {
filters[i] = s->channel_filters[i];
}
for (; i < s->channel_filter_count + num_extra_filters; i++) {
filters[i] = extra_filters[i - s->channel_filter_count];
}
filters[i] = &grpc_connected_channel_filter;
for (i = 0; i < s->cq_count; i++) {
grpc_transport_add_to_pollset(transport, grpc_cq_pollset(s->cqs[i]));
}
channel = grpc_channel_create_from_filters(filters, num_filters,
s->channel_args, mdctx, 0);
chand = (channel_data *)grpc_channel_stack_element(
grpc_channel_get_channel_stack(channel), 0)
->channel_data;
chand->server = s;
server_ref(s);
chand->channel = channel;
num_registered_methods = 0;
for (rm = s->registered_methods; rm; rm = rm->next) {
num_registered_methods++;
}
/* build a lookup table phrased in terms of mdstr's in this channels context
to quickly find registered methods */
if (num_registered_methods > 0) {
slots = 2 * num_registered_methods;
alloc = sizeof(channel_registered_method) * slots;
chand->registered_methods = gpr_malloc(alloc);
memset(chand->registered_methods, 0, alloc);
for (rm = s->registered_methods; rm; rm = rm->next) {
host = rm->host ? grpc_mdstr_from_string(mdctx, rm->host) : NULL;
method = grpc_mdstr_from_string(mdctx, rm->method);
hash = GRPC_MDSTR_KV_HASH(host ? host->hash : 0, method->hash);
for (probes = 0; chand->registered_methods[(hash + probes) % slots]
.server_registered_method != NULL;
probes++)
;
if (probes > max_probes) max_probes = probes;
crm = &chand->registered_methods[(hash + probes) % slots];
crm->server_registered_method = rm;
crm->host = host;
crm->method = method;
}
chand->registered_method_slots = slots;
chand->registered_method_max_probes = max_probes;
}
result = grpc_connected_channel_bind_transport(
grpc_channel_get_channel_stack(channel), transport);
gpr_mu_lock(&s->mu);
chand->next = &s->root_channel_data;
chand->prev = chand->next->prev;
chand->next->prev = chand->prev->next = chand;
gpr_mu_unlock(&s->mu);
gpr_free(filters);
return result;
}
static void test_create_channel_stack(void) {
const grpc_channel_filter filter = {
call_func,
channel_func,
sizeof(int),
call_init_func,
grpc_call_stack_ignore_set_pollset_or_pollset_set,
call_destroy_func,
sizeof(int),
channel_init_func,
channel_destroy_func,
get_peer,
grpc_channel_next_get_info,
"some_test_filter"};
const grpc_channel_filter *filters = &filter;
grpc_channel_stack *channel_stack;
grpc_call_stack *call_stack;
grpc_channel_element *channel_elem;
grpc_call_element *call_elem;
grpc_arg arg;
grpc_channel_args chan_args;
int *channel_data;
int *call_data;
grpc_exec_ctx exec_ctx = GRPC_EXEC_CTX_INIT;
grpc_mdstr *path = grpc_mdstr_from_string("/service/method");
arg.type = GRPC_ARG_INTEGER;
arg.key = "test_key";
arg.value.integer = 42;
chan_args.num_args = 1;
chan_args.args = &arg;
channel_stack = gpr_malloc(grpc_channel_stack_size(&filters, 1));
grpc_channel_stack_init(&exec_ctx, 1, free_channel, channel_stack, &filters,
1, &chan_args, NULL, "test", channel_stack);
GPR_ASSERT(channel_stack->count == 1);
channel_elem = grpc_channel_stack_element(channel_stack, 0);
channel_data = (int *)channel_elem->channel_data;
GPR_ASSERT(*channel_data == 0);
call_stack = gpr_malloc(channel_stack->call_stack_size);
grpc_error *error =
grpc_call_stack_init(&exec_ctx, channel_stack, 1, free_call, call_stack,
NULL, NULL, path, gpr_now(GPR_CLOCK_MONOTONIC),
gpr_inf_future(GPR_CLOCK_MONOTONIC), call_stack);
GPR_ASSERT(error == GRPC_ERROR_NONE);
GPR_ASSERT(call_stack->count == 1);
call_elem = grpc_call_stack_element(call_stack, 0);
GPR_ASSERT(call_elem->filter == channel_elem->filter);
GPR_ASSERT(call_elem->channel_data == channel_elem->channel_data);
call_data = (int *)call_elem->call_data;
GPR_ASSERT(*call_data == 0);
GPR_ASSERT(*channel_data == 1);
GRPC_CALL_STACK_UNREF(&exec_ctx, call_stack, "done");
grpc_exec_ctx_flush(&exec_ctx);
GPR_ASSERT(*channel_data == 2);
GRPC_CHANNEL_STACK_UNREF(&exec_ctx, channel_stack, "done");
grpc_exec_ctx_finish(&exec_ctx);
GRPC_MDSTR_UNREF(path);
}
void grpc_server_setup_transport(grpc_exec_ctx *exec_ctx, grpc_server *s,
grpc_transport *transport,
grpc_channel_filter const **extra_filters,
size_t num_extra_filters,
const grpc_channel_args *args) {
size_t num_filters = s->channel_filter_count + num_extra_filters + 1;
grpc_channel_filter const **filters =
gpr_malloc(sizeof(grpc_channel_filter *) * num_filters);
size_t i;
size_t num_registered_methods;
size_t alloc;
registered_method *rm;
channel_registered_method *crm;
grpc_channel *channel;
channel_data *chand;
grpc_mdstr *host;
grpc_mdstr *method;
uint32_t hash;
size_t slots;
uint32_t probes;
uint32_t max_probes = 0;
grpc_transport_op op;
for (i = 0; i < s->channel_filter_count; i++) {
filters[i] = s->channel_filters[i];
}
for (; i < s->channel_filter_count + num_extra_filters; i++) {
filters[i] = extra_filters[i - s->channel_filter_count];
}
filters[i] = &grpc_connected_channel_filter;
for (i = 0; i < s->cq_count; i++) {
memset(&op, 0, sizeof(op));
op.bind_pollset = grpc_cq_pollset(s->cqs[i]);
grpc_transport_perform_op(exec_ctx, transport, &op);
}
channel = grpc_channel_create_from_filters(exec_ctx, NULL, filters,
num_filters, args, 0);
chand = (channel_data *)grpc_channel_stack_element(
grpc_channel_get_channel_stack(channel), 0)->channel_data;
chand->server = s;
server_ref(s);
chand->channel = channel;
num_registered_methods = 0;
for (rm = s->registered_methods; rm; rm = rm->next) {
num_registered_methods++;
}
/* build a lookup table phrased in terms of mdstr's in this channels context
to quickly find registered methods */
if (num_registered_methods > 0) {
slots = 2 * num_registered_methods;
alloc = sizeof(channel_registered_method) * slots;
chand->registered_methods = gpr_malloc(alloc);
memset(chand->registered_methods, 0, alloc);
for (rm = s->registered_methods; rm; rm = rm->next) {
host = rm->host ? grpc_mdstr_from_string(rm->host) : NULL;
method = grpc_mdstr_from_string(rm->method);
hash = GRPC_MDSTR_KV_HASH(host ? host->hash : 0, method->hash);
for (probes = 0; chand->registered_methods[(hash + probes) % slots]
.server_registered_method != NULL;
probes++)
;
if (probes > max_probes) max_probes = probes;
crm = &chand->registered_methods[(hash + probes) % slots];
crm->server_registered_method = rm;
crm->host = host;
crm->method = method;
}
GPR_ASSERT(slots <= UINT32_MAX);
chand->registered_method_slots = (uint32_t)slots;
chand->registered_method_max_probes = max_probes;
}
grpc_connected_channel_bind_transport(grpc_channel_get_channel_stack(channel),
transport);
gpr_mu_lock(&s->mu_global);
chand->next = &s->root_channel_data;
chand->prev = chand->next->prev;
chand->next->prev = chand->prev->next = chand;
gpr_mu_unlock(&s->mu_global);
gpr_free((void *)filters);
GRPC_CHANNEL_INTERNAL_REF(channel, "connectivity");
memset(&op, 0, sizeof(op));
op.set_accept_stream = accept_stream;
op.set_accept_stream_user_data = chand;
op.on_connectivity_state_change = &chand->channel_connectivity_changed;
op.connectivity_state = &chand->connectivity_state;
op.disconnect = gpr_atm_acq_load(&s->shutdown_flag) != 0;
grpc_transport_perform_op(exec_ctx, transport, &op);
}
void grpc_server_setup_transport(grpc_exec_ctx *exec_ctx, grpc_server *s,
grpc_transport *transport,
grpc_pollset *accepting_pollset,
const grpc_channel_args *args) {
size_t num_registered_methods;
size_t alloc;
registered_method *rm;
channel_registered_method *crm;
grpc_channel *channel;
channel_data *chand;
grpc_mdstr *host;
grpc_mdstr *method;
uint32_t hash;
size_t slots;
uint32_t probes;
uint32_t max_probes = 0;
grpc_transport_op op;
channel =
grpc_channel_create(exec_ctx, NULL, args, GRPC_SERVER_CHANNEL, transport);
chand = (channel_data *)grpc_channel_stack_element(
grpc_channel_get_channel_stack(channel), 0)
->channel_data;
chand->server = s;
server_ref(s);
chand->channel = channel;
size_t cq_idx;
grpc_completion_queue *accepting_cq = grpc_cq_from_pollset(accepting_pollset);
for (cq_idx = 0; cq_idx < s->cq_count; cq_idx++) {
if (s->cqs[cq_idx] == accepting_cq) break;
}
if (cq_idx == s->cq_count) {
/* completion queue not found: pick a random one to publish new calls to */
cq_idx = (size_t)rand() % s->cq_count;
}
chand->cq_idx = cq_idx;
num_registered_methods = 0;
for (rm = s->registered_methods; rm; rm = rm->next) {
num_registered_methods++;
}
/* build a lookup table phrased in terms of mdstr's in this channels context
to quickly find registered methods */
if (num_registered_methods > 0) {
slots = 2 * num_registered_methods;
alloc = sizeof(channel_registered_method) * slots;
chand->registered_methods = gpr_malloc(alloc);
memset(chand->registered_methods, 0, alloc);
for (rm = s->registered_methods; rm; rm = rm->next) {
host = rm->host ? grpc_mdstr_from_string(rm->host) : NULL;
method = grpc_mdstr_from_string(rm->method);
hash = GRPC_MDSTR_KV_HASH(host ? host->hash : 0, method->hash);
for (probes = 0; chand->registered_methods[(hash + probes) % slots]
.server_registered_method != NULL;
probes++)
;
if (probes > max_probes) max_probes = probes;
crm = &chand->registered_methods[(hash + probes) % slots];
crm->server_registered_method = rm;
crm->flags = rm->flags;
crm->host = host;
crm->method = method;
}
GPR_ASSERT(slots <= UINT32_MAX);
chand->registered_method_slots = (uint32_t)slots;
chand->registered_method_max_probes = max_probes;
}
gpr_mu_lock(&s->mu_global);
chand->next = &s->root_channel_data;
chand->prev = chand->next->prev;
chand->next->prev = chand->prev->next = chand;
gpr_mu_unlock(&s->mu_global);
GRPC_CHANNEL_INTERNAL_REF(channel, "connectivity");
memset(&op, 0, sizeof(op));
op.set_accept_stream = true;
op.set_accept_stream_fn = accept_stream;
op.set_accept_stream_user_data = chand;
op.on_connectivity_state_change = &chand->channel_connectivity_changed;
op.connectivity_state = &chand->connectivity_state;
if (gpr_atm_acq_load(&s->shutdown_flag) != 0) {
op.disconnect_with_error = GRPC_ERROR_CREATE("Server shutdown");
}
grpc_transport_perform_op(exec_ctx, transport, &op);
}
