| /* |
| * |
| * Copyright 2017 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/gpr/fork.h" |
| |
| #include <string.h> |
| |
| #include <grpc/support/alloc.h> |
| #include <grpc/support/useful.h> |
| |
| #include "src/core/lib/gpr/env.h" |
| |
| /* |
| * NOTE: FORKING IS NOT GENERALLY SUPPORTED, THIS IS ONLY INTENDED TO WORK |
| * AROUND VERY SPECIFIC USE CASES. |
| */ |
| |
| static int override_fork_support_enabled = -1; |
| static int fork_support_enabled; |
| |
| void grpc_fork_support_init() { |
| #ifdef GRPC_ENABLE_FORK_SUPPORT |
| fork_support_enabled = 1; |
| #else |
| fork_support_enabled = 0; |
| char* env = gpr_getenv("GRPC_ENABLE_FORK_SUPPORT"); |
| if (env != nullptr) { |
| static const char* truthy[] = {"yes", "Yes", "YES", "true", |
| "True", "TRUE", "1"}; |
| for (size_t i = 0; i < GPR_ARRAY_SIZE(truthy); i++) { |
| if (0 == strcmp(env, truthy[i])) { |
| fork_support_enabled = 1; |
| } |
| } |
| gpr_free(env); |
| } |
| #endif |
| if (override_fork_support_enabled != -1) { |
| fork_support_enabled = override_fork_support_enabled; |
| } |
| } |
| |
| int grpc_fork_support_enabled() { return fork_support_enabled; } |
| |
| void grpc_enable_fork_support(int enable) { |
| override_fork_support_enabled = enable; |
| } |