diff options
Diffstat (limited to 'src/ruby/ext/grpc/rb_grpc.c')
| -rw-r--r-- | src/ruby/ext/grpc/rb_grpc.c | 55 |
1 files changed, 28 insertions, 27 deletions
diff --git a/src/ruby/ext/grpc/rb_grpc.c b/src/ruby/ext/grpc/rb_grpc.c index 5be8861e0c..933a3ac152 100644 --- a/src/ruby/ext/grpc/rb_grpc.c +++ b/src/ruby/ext/grpc/rb_grpc.c @@ -1,33 +1,18 @@ /* * - * Copyright 2015, Google Inc. - * All rights reserved. + * Copyright 2015 gRPC authors. * - * Redistribution and use in source and binary forms, with or without - * modification, are permitted provided that the following conditions are - * met: + * 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 * - * * Redistributions of source code must retain the above copyright - * notice, this list of conditions and the following disclaimer. - * * Redistributions in binary form must reproduce the above - * copyright notice, this list of conditions and the following disclaimer - * in the documentation and/or other materials provided with the - * distribution. - * * Neither the name of Google Inc. nor the names of its - * contributors may be used to endorse or promote products derived from - * this software without specific prior written permission. + * http://www.apache.org/licenses/LICENSE-2.0 * - * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS - * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT - * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR - * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT - * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, - * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT - * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, - * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY - * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT - * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE - * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. + * 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. * */ @@ -292,11 +277,12 @@ static gpr_once g_once_init = GPR_ONCE_INIT; static void grpc_ruby_once_init_internal() { grpc_init(); - grpc_rb_event_queue_thread_start(); - grpc_rb_channel_polling_thread_start(); atexit(grpc_rb_shutdown); } +static VALUE bg_thread_init_rb_mu = Qundef; +static int bg_thread_init_done = 0; + void grpc_ruby_once_init() { /* ruby_vm_at_exit doesn't seem to be working. It would crash once every * blue moon, and some users are getting it repeatedly. See the discussions @@ -309,6 +295,18 @@ void grpc_ruby_once_init() { * schedule our initialization and destruction only once. */ gpr_once_init(&g_once_init, grpc_ruby_once_init_internal); + + // Avoid calling calling into ruby library (when creating threads here) + // in gpr_once_init. In general, it appears to be unsafe to call + // into the ruby library while holding a non-ruby mutex, because a gil yield + // could end up trying to lock onto that same mutex and deadlocking. + rb_mutex_lock(bg_thread_init_rb_mu); + if (!bg_thread_init_done) { + grpc_rb_event_queue_thread_start(); + grpc_rb_channel_polling_thread_start(); + bg_thread_init_done = 1; + } + rb_mutex_unlock(bg_thread_init_rb_mu); } void Init_grpc_c() { @@ -317,6 +315,9 @@ void Init_grpc_c() { return; } + bg_thread_init_rb_mu = rb_mutex_new(); + rb_global_variable(&bg_thread_init_rb_mu); + grpc_rb_mGRPC = rb_define_module("GRPC"); grpc_rb_mGrpcCore = rb_define_module_under(grpc_rb_mGRPC, "Core"); grpc_rb_sNewServerRpc = rb_struct_define( |