diff options
Diffstat (limited to 'src/core/lib/support/fork.cc')
-rw-r--r-- | src/core/lib/support/fork.cc | 62 |
1 files changed, 62 insertions, 0 deletions
diff --git a/src/core/lib/support/fork.cc b/src/core/lib/support/fork.cc new file mode 100644 index 0000000000..2f29af899d --- /dev/null +++ b/src/core/lib/support/fork.cc @@ -0,0 +1,62 @@ +/* + * + * 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/support/fork.h" + +#include <string.h> + +#include <grpc/support/alloc.h> +#include <grpc/support/useful.h> + +#include "src/core/lib/support/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 != NULL) { + 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; +} |