diff options
Diffstat (limited to 'src/core/lib/iomgr/fork_posix.cc')
-rw-r--r-- | src/core/lib/iomgr/fork_posix.cc | 48 |
1 files changed, 30 insertions, 18 deletions
diff --git a/src/core/lib/iomgr/fork_posix.cc b/src/core/lib/iomgr/fork_posix.cc index f8645ab157..b37384b8db 100644 --- a/src/core/lib/iomgr/fork_posix.cc +++ b/src/core/lib/iomgr/fork_posix.cc @@ -28,7 +28,7 @@ #include <grpc/support/log.h> #include "src/core/lib/gpr/env.h" -#include "src/core/lib/gpr/fork.h" +#include "src/core/lib/gprpp/fork.h" #include "src/core/lib/gprpp/thd.h" #include "src/core/lib/iomgr/ev_posix.h" #include "src/core/lib/iomgr/executor.h" @@ -41,47 +41,59 @@ * AROUND VERY SPECIFIC USE CASES. */ +namespace { +bool skipped_handler = true; +bool registered_handlers = false; +} // namespace + void grpc_prefork() { - if (!grpc_fork_support_enabled()) { + grpc_core::ExecCtx exec_ctx; + skipped_handler = true; + if (!grpc_is_initialized()) { + return; + } + if (!grpc_core::Fork::Enabled()) { gpr_log(GPR_ERROR, "Fork support not enabled; try running with the " "environment variable GRPC_ENABLE_FORK_SUPPORT=1"); return; } - if (grpc_is_initialized()) { - grpc_core::ExecCtx exec_ctx; - grpc_timer_manager_set_threading(false); - grpc_executor_set_threading(false); - grpc_core::ExecCtx::Get()->Flush(); - if (!grpc_core::Thread::AwaitAll( - gpr_time_add(gpr_now(GPR_CLOCK_REALTIME), - gpr_time_from_seconds(3, GPR_TIMESPAN)))) { - gpr_log(GPR_ERROR, "gRPC thread still active! Cannot fork!"); - } + if (!grpc_core::Fork::BlockExecCtx()) { + gpr_log(GPR_INFO, + "Other threads are currently calling into gRPC, skipping fork() " + "handlers"); + return; } + grpc_timer_manager_set_threading(false); + grpc_executor_set_threading(false); + grpc_core::ExecCtx::Get()->Flush(); + grpc_core::Fork::AwaitThreads(); + skipped_handler = false; } void grpc_postfork_parent() { - if (grpc_is_initialized()) { - grpc_timer_manager_set_threading(true); + if (!skipped_handler) { + grpc_core::Fork::AllowExecCtx(); grpc_core::ExecCtx exec_ctx; + grpc_timer_manager_set_threading(true); grpc_executor_set_threading(true); } } void grpc_postfork_child() { - if (grpc_is_initialized()) { - grpc_timer_manager_set_threading(true); + if (!skipped_handler) { + grpc_core::Fork::AllowExecCtx(); grpc_core::ExecCtx exec_ctx; + grpc_timer_manager_set_threading(true); grpc_executor_set_threading(true); - grpc_core::ExecCtx::Get()->Flush(); } } void grpc_fork_handlers_auto_register() { - if (grpc_fork_support_enabled()) { + if (grpc_core::Fork::Enabled() & !registered_handlers) { #ifdef GRPC_POSIX_FORK_ALLOW_PTHREAD_ATFORK pthread_atfork(grpc_prefork, grpc_postfork_parent, grpc_postfork_child); + registered_handlers = true; #endif // GRPC_POSIX_FORK_ALLOW_PTHREAD_ATFORK } } |