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// Copyright 2021 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 <grpc/support/port_platform.h>
#include "src/core/lib/resource_quota/api.h"
#include <stdint.h>
#include <atomic>
#include <memory>
#include <util/generic/string.h>
#include <util/string/cast.h>
#include <utility>
#include "y_absl/strings/str_cat.h"
#include <grpc/grpc.h>
#include "src/core/lib/channel/channel_args.h"
#include "src/core/lib/gprpp/ref_counted_ptr.h"
#include "src/core/lib/iomgr/exec_ctx.h"
#include "src/core/lib/resource_quota/memory_quota.h"
#include "src/core/lib/resource_quota/resource_quota.h"
#include "src/core/lib/resource_quota/thread_quota.h"
namespace grpc_core {
ResourceQuotaRefPtr ResourceQuotaFromChannelArgs(
const grpc_channel_args* args) {
return grpc_channel_args_find_pointer<ResourceQuota>(args,
GRPC_ARG_RESOURCE_QUOTA)
->Ref();
}
ResourceQuotaRefPtr ResourceQuotaFromEndpointConfig(
const grpc_event_engine::experimental::EndpointConfig& config) {
void* value = config.GetVoidPointer(GRPC_ARG_RESOURCE_QUOTA);
if (value != nullptr) {
return reinterpret_cast<ResourceQuota*>(value)->Ref();
}
return nullptr;
}
ChannelArgs EnsureResourceQuotaInChannelArgs(const ChannelArgs& args) {
if (args.GetObject<ResourceQuota>() != nullptr) return args;
// If there's no existing quota, add it to the default one - shared between
// all channel args declared thusly. This prevents us from accidentally not
// sharing subchannels due to their channel args not specifying a quota.
return args.SetObject(ResourceQuota::Default());
}
void RegisterResourceQuota(CoreConfiguration::Builder* builder) {
builder->channel_args_preconditioning()->RegisterStage(
EnsureResourceQuotaInChannelArgs);
}
} // namespace grpc_core
extern "C" const grpc_arg_pointer_vtable* grpc_resource_quota_arg_vtable() {
return grpc_core::ChannelArgTypeTraits<grpc_core::ResourceQuota>::VTable();
}
extern "C" grpc_resource_quota* grpc_resource_quota_create(const char* name) {
static std::atomic<uintptr_t> anonymous_counter{0};
TString quota_name =
name == nullptr
? y_absl::StrCat("anonymous-quota-", anonymous_counter.fetch_add(1))
: name;
return (new grpc_core::ResourceQuota(std::move(quota_name)))->c_ptr();
}
extern "C" void grpc_resource_quota_ref(grpc_resource_quota* resource_quota) {
grpc_core::ResourceQuota::FromC(resource_quota)->Ref().release();
}
extern "C" void grpc_resource_quota_unref(grpc_resource_quota* resource_quota) {
grpc_core::ResourceQuota::FromC(resource_quota)->Unref();
}
extern "C" void grpc_resource_quota_resize(grpc_resource_quota* resource_quota,
size_t new_size) {
grpc_core::ExecCtx exec_ctx;
grpc_core::ResourceQuota::FromC(resource_quota)
->memory_quota()
->SetSize(new_size);
}
extern "C" void grpc_resource_quota_set_max_threads(
grpc_resource_quota* resource_quota, int new_max_threads) {
grpc_core::ResourceQuota::FromC(resource_quota)
->thread_quota()
->SetMax(new_max_threads);
}
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