diff options
Diffstat (limited to 'src/core/lib/transport/transport.c')
| -rw-r--r-- | src/core/lib/transport/transport.c | 184 |
1 files changed, 184 insertions, 0 deletions
diff --git a/src/core/lib/transport/transport.c b/src/core/lib/transport/transport.c new file mode 100644 index 0000000000..18256aae5e --- /dev/null +++ b/src/core/lib/transport/transport.c @@ -0,0 +1,184 @@ +/* + * + * Copyright 2015-2016, 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 "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_enqueue(exec_ctx, &refcount->destroy, true, 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); +} + +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_pollset(grpc_exec_ctx *exec_ctx, + grpc_transport *transport, grpc_stream *stream, + grpc_pollset *pollset) { + transport->vtable->set_pollset(exec_ctx, transport, stream, pollset); +} + +void grpc_transport_destroy_stream(grpc_exec_ctx *exec_ctx, + grpc_transport *transport, + grpc_stream *stream) { + transport->vtable->destroy_stream(exec_ctx, transport, stream); +} + +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_exec_ctx_enqueue(exec_ctx, op->recv_message_ready, false, NULL); + grpc_exec_ctx_enqueue(exec_ctx, op->recv_initial_metadata_ready, false, NULL); + grpc_exec_ctx_enqueue(exec_ctx, op->on_complete, false, NULL); +} + +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_with_status == GRPC_STATUS_OK) { + op->cancel_with_status = status; + } + if (op->close_with_status != GRPC_STATUS_OK) { + op->close_with_status = GRPC_STATUS_OK; + if (op->optional_close_message != NULL) { + gpr_slice_unref(*op->optional_close_message); + op->optional_close_message = NULL; + } + } +} + +typedef struct { + gpr_slice message; + grpc_closure *then_call; + grpc_closure closure; +} close_message_data; + +static void free_message(grpc_exec_ctx *exec_ctx, void *p, bool iomgr_success) { + close_message_data *cmd = p; + gpr_slice_unref(cmd->message); + if (cmd->then_call != NULL) { + cmd->then_call->cb(exec_ctx, cmd->then_call->cb_arg, iomgr_success); + } + gpr_free(cmd); +} + +void grpc_transport_stream_op_add_close(grpc_transport_stream_op *op, + grpc_status_code status, + gpr_slice *optional_message) { + close_message_data *cmd; + GPR_ASSERT(status != GRPC_STATUS_OK); + if (op->cancel_with_status != GRPC_STATUS_OK || + op->close_with_status != GRPC_STATUS_OK) { + if (optional_message) { + gpr_slice_unref(*optional_message); + } + return; + } + if (optional_message) { + cmd = gpr_malloc(sizeof(*cmd)); + cmd->message = *optional_message; + cmd->then_call = op->on_complete; + grpc_closure_init(&cmd->closure, free_message, cmd); + op->on_complete = &cmd->closure; + op->optional_close_message = &cmd->message; + } + op->close_with_status = status; +} |