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//
//
// Copyright 2016 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.
//
//
#ifndef GRPC_SRC_CORE_LIB_SLICE_SLICE_INTERNAL_H
#define GRPC_SRC_CORE_LIB_SLICE_SLICE_INTERNAL_H
#include <grpc/support/port_platform.h>
#include <stdint.h>
#include <cstddef>
#include <util/generic/string.h>
#include <util/string/cast.h>
#include "y_absl/hash/hash.h"
#include "y_absl/strings/string_view.h"
#include <grpc/slice.h>
#include <grpc/support/log.h>
#include "src/core/lib/gprpp/memory.h"
// Returns a pointer to the first slice in the slice buffer without giving
// ownership to or a reference count on that slice.
inline grpc_slice* grpc_slice_buffer_peek_first(grpc_slice_buffer* sb) {
GPR_DEBUG_ASSERT(sb->count > 0);
return &sb->slices[0];
}
// Removes the first slice from the slice buffer.
void grpc_slice_buffer_remove_first(grpc_slice_buffer* sb);
// Calls grpc_slice_sub with the given parameters on the first slice.
void grpc_slice_buffer_sub_first(grpc_slice_buffer* sb, size_t begin,
size_t end);
// if slice matches a static slice, returns the static slice
// otherwise returns the passed in slice (without reffing it)
// used for surface boundaries where we might receive an un-interned static
// string
grpc_slice grpc_slice_maybe_static_intern(grpc_slice slice,
bool* returned_slice_is_different);
uint32_t grpc_static_slice_hash(grpc_slice s);
int grpc_static_slice_eq(grpc_slice a, grpc_slice b);
grpc_slice grpc_slice_from_moved_buffer(grpc_core::UniquePtr<char> p,
size_t len);
grpc_slice grpc_slice_from_moved_string(grpc_core::UniquePtr<char> p);
grpc_slice grpc_slice_from_cpp_string(TString str);
// Returns the memory used by this slice, not counting the slice structure
// itself. This means that inlined and slices from static strings will return
// 0. All other slices will return the size of the allocated chars.
size_t grpc_slice_memory_usage(grpc_slice s);
namespace grpc_core {
// Converts grpc_slice to y_absl::string_view.
inline y_absl::string_view StringViewFromSlice(const grpc_slice& slice) {
return y_absl::string_view(
reinterpret_cast<const char*>(GRPC_SLICE_START_PTR(slice)),
GRPC_SLICE_LENGTH(slice));
}
} // namespace grpc_core
inline uint32_t grpc_slice_hash(const grpc_slice& s) {
return y_absl::HashOf(grpc_core::StringViewFromSlice(s));
}
namespace grpc_core {
struct SliceHash {
std::size_t operator()(const grpc_slice& slice) const {
return grpc_slice_hash(slice);
}
};
} // namespace grpc_core
inline bool operator==(const grpc_slice& s1, const grpc_slice& s2) {
return grpc_slice_eq(s1, s2);
}
#endif // GRPC_SRC_CORE_LIB_SLICE_SLICE_INTERNAL_H
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