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/*
*
* Copyright 2015 gRPC authors.
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*
*/
#include "src/core/lib/transport/byte_stream.h"
#include <stdlib.h>
#include <grpc/support/log.h>
#include "src/core/lib/slice/slice_internal.h"
int grpc_byte_stream_next(grpc_exec_ctx *exec_ctx,
grpc_byte_stream *byte_stream, size_t max_size_hint,
grpc_closure *on_complete) {
return byte_stream->next(exec_ctx, byte_stream, max_size_hint, on_complete);
}
grpc_error *grpc_byte_stream_pull(grpc_exec_ctx *exec_ctx,
grpc_byte_stream *byte_stream,
grpc_slice *slice) {
return byte_stream->pull(exec_ctx, byte_stream, slice);
}
void grpc_byte_stream_destroy(grpc_exec_ctx *exec_ctx,
grpc_byte_stream *byte_stream) {
byte_stream->destroy(exec_ctx, byte_stream);
}
/* slice_buffer_stream */
static bool slice_buffer_stream_next(grpc_exec_ctx *exec_ctx,
grpc_byte_stream *byte_stream,
size_t max_size_hint,
grpc_closure *on_complete) {
grpc_slice_buffer_stream *stream = (grpc_slice_buffer_stream *)byte_stream;
GPR_ASSERT(stream->cursor < stream->backing_buffer->count);
return true;
}
static grpc_error *slice_buffer_stream_pull(grpc_exec_ctx *exec_ctx,
grpc_byte_stream *byte_stream,
grpc_slice *slice) {
grpc_slice_buffer_stream *stream = (grpc_slice_buffer_stream *)byte_stream;
GPR_ASSERT(stream->cursor < stream->backing_buffer->count);
*slice =
grpc_slice_ref_internal(stream->backing_buffer->slices[stream->cursor]);
stream->cursor++;
return GRPC_ERROR_NONE;
}
static void slice_buffer_stream_destroy(grpc_exec_ctx *exec_ctx,
grpc_byte_stream *byte_stream) {}
void grpc_slice_buffer_stream_init(grpc_slice_buffer_stream *stream,
grpc_slice_buffer *slice_buffer,
uint32_t flags) {
GPR_ASSERT(slice_buffer->length <= UINT32_MAX);
stream->base.length = (uint32_t)slice_buffer->length;
stream->base.flags = flags;
stream->base.next = slice_buffer_stream_next;
stream->base.pull = slice_buffer_stream_pull;
stream->base.destroy = slice_buffer_stream_destroy;
stream->backing_buffer = slice_buffer;
stream->cursor = 0;
}
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