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/*
*
* 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 <grpc/support/port_platform.h>
#include "src/core/lib/gpr/fork.h"
#include <string.h>
#include <grpc/support/alloc.h>
#include "src/core/lib/gpr/env.h"
#include "src/core/lib/gpr/useful.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;
#endif
bool env_var_set = false;
char* env = gpr_getenv("GRPC_ENABLE_FORK_SUPPORT");
if (env != nullptr) {
static const char* truthy[] = {"yes", "Yes", "YES", "true",
"True", "TRUE", "1"};
static const char* falsey[] = {"no", "No", "NO", "false",
"False", "FALSE", "0"};
for (size_t i = 0; i < GPR_ARRAY_SIZE(truthy); i++) {
if (0 == strcmp(env, truthy[i])) {
fork_support_enabled = 1;
env_var_set = true;
break;
}
}
if (!env_var_set) {
for (size_t i = 0; i < GPR_ARRAY_SIZE(falsey); i++) {
if (0 == strcmp(env, falsey[i])) {
fork_support_enabled = 0;
env_var_set = true;
break;
}
}
}
gpr_free(env);
}
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;
}
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