| /* |
| * |
| * Copyright 2015, Google Inc. |
| * All rights reserved. |
| * |
| * Redistribution and use in source and binary forms, with or without |
| * modification, are permitted provided that the following conditions are |
| * met: |
| * |
| * * Redistributions of source code must retain the above copyright |
| * notice, this list of conditions and the following disclaimer. |
| * * Redistributions in binary form must reproduce the above |
| * copyright notice, this list of conditions and the following disclaimer |
| * in the documentation and/or other materials provided with the |
| * distribution. |
| * * Neither the name of Google Inc. nor the names of its |
| * contributors may be used to endorse or promote products derived from |
| * this software without specific prior written permission. |
| * |
| * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS |
| * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT |
| * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR |
| * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT |
| * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, |
| * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT |
| * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, |
| * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY |
| * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT |
| * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE |
| * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. |
| * |
| */ |
| |
| #include "src/core/lib/transport/transport.h" |
| #include <grpc/support/alloc.h> |
| #include <grpc/support/atm.h> |
| #include <grpc/support/log.h> |
| #include <grpc/support/sync.h> |
| #include "src/core/lib/support/string.h" |
| #include "src/core/lib/transport/transport_impl.h" |
| |
| #ifdef GRPC_STREAM_REFCOUNT_DEBUG |
| void grpc_stream_ref(grpc_stream_refcount *refcount, const char *reason) { |
| gpr_atm val = gpr_atm_no_barrier_load(&refcount->refs.count); |
| gpr_log(GPR_DEBUG, "%s %p:%p REF %d->%d %s", refcount->object_type, |
| refcount, refcount->destroy.cb_arg, val, val + 1, reason); |
| #else |
| void grpc_stream_ref(grpc_stream_refcount *refcount) { |
| #endif |
| gpr_ref_non_zero(&refcount->refs); |
| } |
| |
| #ifdef GRPC_STREAM_REFCOUNT_DEBUG |
| void grpc_stream_unref(grpc_exec_ctx *exec_ctx, grpc_stream_refcount *refcount, |
| const char *reason) { |
| gpr_atm val = gpr_atm_no_barrier_load(&refcount->refs.count); |
| gpr_log(GPR_DEBUG, "%s %p:%p UNREF %d->%d %s", refcount->object_type, |
| refcount, refcount->destroy.cb_arg, val, val - 1, reason); |
| #else |
| void grpc_stream_unref(grpc_exec_ctx *exec_ctx, |
| grpc_stream_refcount *refcount) { |
| #endif |
| if (gpr_unref(&refcount->refs)) { |
| grpc_exec_ctx_sched(exec_ctx, &refcount->destroy, GRPC_ERROR_NONE, NULL); |
| } |
| } |
| |
| #ifdef GRPC_STREAM_REFCOUNT_DEBUG |
| void grpc_stream_ref_init(grpc_stream_refcount *refcount, int initial_refs, |
| grpc_iomgr_cb_func cb, void *cb_arg, |
| const char *object_type) { |
| refcount->object_type = object_type; |
| #else |
| void grpc_stream_ref_init(grpc_stream_refcount *refcount, int initial_refs, |
| grpc_iomgr_cb_func cb, void *cb_arg) { |
| #endif |
| gpr_ref_init(&refcount->refs, initial_refs); |
| grpc_closure_init(&refcount->destroy, cb, cb_arg); |
| } |
| |
| static void move64(uint64_t *from, uint64_t *to) { |
| *to += *from; |
| *from = 0; |
| } |
| |
| void grpc_transport_move_one_way_stats(grpc_transport_one_way_stats *from, |
| grpc_transport_one_way_stats *to) { |
| move64(&from->framing_bytes, &to->framing_bytes); |
| move64(&from->data_bytes, &to->data_bytes); |
| move64(&from->header_bytes, &to->header_bytes); |
| } |
| |
| void grpc_transport_move_stats(grpc_transport_stream_stats *from, |
| grpc_transport_stream_stats *to) { |
| grpc_transport_move_one_way_stats(&from->incoming, &to->incoming); |
| grpc_transport_move_one_way_stats(&from->outgoing, &to->outgoing); |
| } |
| |
| size_t grpc_transport_stream_size(grpc_transport *transport) { |
| return transport->vtable->sizeof_stream; |
| } |
| |
| void grpc_transport_destroy(grpc_exec_ctx *exec_ctx, |
| grpc_transport *transport) { |
| transport->vtable->destroy(exec_ctx, transport); |
| } |
| |
| int grpc_transport_init_stream(grpc_exec_ctx *exec_ctx, |
| grpc_transport *transport, grpc_stream *stream, |
| grpc_stream_refcount *refcount, |
| const void *server_data) { |
| return transport->vtable->init_stream(exec_ctx, transport, stream, refcount, |
| server_data); |
| } |
| |
| void grpc_transport_perform_stream_op(grpc_exec_ctx *exec_ctx, |
| grpc_transport *transport, |
| grpc_stream *stream, |
| grpc_transport_stream_op *op) { |
| transport->vtable->perform_stream_op(exec_ctx, transport, stream, op); |
| } |
| |
| void grpc_transport_perform_op(grpc_exec_ctx *exec_ctx, |
| grpc_transport *transport, |
| grpc_transport_op *op) { |
| transport->vtable->perform_op(exec_ctx, transport, op); |
| } |
| |
| void grpc_transport_set_pops(grpc_exec_ctx *exec_ctx, grpc_transport *transport, |
| grpc_stream *stream, |
| grpc_polling_entity *pollent) { |
| grpc_pollset *pollset; |
| grpc_pollset_set *pollset_set; |
| if ((pollset = grpc_polling_entity_pollset(pollent)) != NULL) { |
| transport->vtable->set_pollset(exec_ctx, transport, stream, pollset); |
| } else if ((pollset_set = grpc_polling_entity_pollset_set(pollent)) != NULL) { |
| transport->vtable->set_pollset_set(exec_ctx, transport, stream, |
| pollset_set); |
| } else { |
| abort(); |
| } |
| } |
| |
| void grpc_transport_destroy_stream(grpc_exec_ctx *exec_ctx, |
| grpc_transport *transport, |
| grpc_stream *stream, void *and_free_memory) { |
| transport->vtable->destroy_stream(exec_ctx, transport, stream, |
| and_free_memory); |
| } |
| |
| char *grpc_transport_get_peer(grpc_exec_ctx *exec_ctx, |
| grpc_transport *transport) { |
| return transport->vtable->get_peer(exec_ctx, transport); |
| } |
| |
| void grpc_transport_stream_op_finish_with_failure(grpc_exec_ctx *exec_ctx, |
| grpc_transport_stream_op *op, |
| grpc_error *error) { |
| grpc_exec_ctx_sched(exec_ctx, op->recv_message_ready, GRPC_ERROR_REF(error), |
| NULL); |
| grpc_exec_ctx_sched(exec_ctx, op->recv_initial_metadata_ready, |
| GRPC_ERROR_REF(error), NULL); |
| grpc_exec_ctx_sched(exec_ctx, op->on_complete, error, NULL); |
| } |
| |
| typedef struct { |
| grpc_error *error; |
| grpc_closure *then_call; |
| grpc_closure closure; |
| } close_message_data; |
| |
| static void free_message(grpc_exec_ctx *exec_ctx, void *p, grpc_error *error) { |
| close_message_data *cmd = p; |
| GRPC_ERROR_UNREF(cmd->error); |
| if (cmd->then_call != NULL) { |
| cmd->then_call->cb(exec_ctx, cmd->then_call->cb_arg, GRPC_ERROR_REF(error)); |
| } |
| gpr_free(cmd); |
| } |
| |
| static void add_error(grpc_transport_stream_op *op, grpc_error **which, |
| grpc_error *error) { |
| close_message_data *cmd; |
| cmd = gpr_malloc(sizeof(*cmd)); |
| cmd->error = error; |
| cmd->then_call = op->on_complete; |
| grpc_closure_init(&cmd->closure, free_message, cmd); |
| op->on_complete = &cmd->closure; |
| *which = error; |
| } |
| |
| void grpc_transport_stream_op_add_cancellation(grpc_transport_stream_op *op, |
| grpc_status_code status) { |
| GPR_ASSERT(status != GRPC_STATUS_OK); |
| if (op->cancel_error == GRPC_ERROR_NONE) { |
| op->cancel_error = grpc_error_set_int(GRPC_ERROR_CANCELLED, |
| GRPC_ERROR_INT_GRPC_STATUS, status); |
| op->close_error = GRPC_ERROR_NONE; |
| } |
| } |
| |
| void grpc_transport_stream_op_add_cancellation_with_message( |
| grpc_transport_stream_op *op, grpc_status_code status, |
| gpr_slice *optional_message) { |
| GPR_ASSERT(status != GRPC_STATUS_OK); |
| if (op->cancel_error != GRPC_ERROR_NONE) { |
| if (optional_message) { |
| gpr_slice_unref(*optional_message); |
| } |
| return; |
| } |
| grpc_error *error; |
| if (optional_message != NULL) { |
| char *msg = gpr_dump_slice(*optional_message, GPR_DUMP_ASCII); |
| error = grpc_error_set_str(GRPC_ERROR_CREATE(msg), |
| GRPC_ERROR_STR_GRPC_MESSAGE, msg); |
| gpr_free(msg); |
| gpr_slice_unref(*optional_message); |
| } else { |
| error = GRPC_ERROR_CREATE("Call cancelled"); |
| } |
| error = grpc_error_set_int(error, GRPC_ERROR_INT_GRPC_STATUS, status); |
| add_error(op, &op->close_error, error); |
| } |
| |
| void grpc_transport_stream_op_add_close(grpc_transport_stream_op *op, |
| grpc_status_code status, |
| gpr_slice *optional_message) { |
| GPR_ASSERT(status != GRPC_STATUS_OK); |
| if (op->cancel_error != GRPC_ERROR_NONE || |
| op->close_error != GRPC_ERROR_NONE) { |
| if (optional_message) { |
| gpr_slice_unref(*optional_message); |
| } |
| return; |
| } |
| grpc_error *error; |
| if (optional_message != NULL) { |
| char *msg = gpr_dump_slice(*optional_message, GPR_DUMP_ASCII); |
| error = grpc_error_set_str(GRPC_ERROR_CREATE(msg), |
| GRPC_ERROR_STR_GRPC_MESSAGE, msg); |
| gpr_free(msg); |
| gpr_slice_unref(*optional_message); |
| } else { |
| error = GRPC_ERROR_CREATE("Call force closed"); |
| } |
| error = grpc_error_set_int(error, GRPC_ERROR_INT_GRPC_STATUS, status); |
| add_error(op, &op->close_error, error); |
| } |