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/*
*
* 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/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);
}
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_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;
}
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