1 // Copyright 2021 Google LLC 2 // 3 // Licensed under the Apache License, Version 2.0 (the "License"); 4 // you may not use this file except in compliance with the License. 5 // You may obtain a copy of the License at 6 // 7 // http://www.apache.org/licenses/LICENSE-2.0 8 // 9 // Unless required by applicable law or agreed to in writing, software 10 // distributed under the License is distributed on an "AS IS" BASIS, 11 // WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 12 // See the License for the specific language governing permissions and 13 // limitations under the License. 14 15 #include "fcp/tracing/tracing_span_impl.h" 16 17 #include "fcp/tracing/tracing_recorder_impl.h" 18 19 namespace fcp { 20 namespace tracing_internal { 21 22 thread_local TracingSpanImpl* TracingSpanImpl::top_tracing_span_ = nullptr; 23 Top()24TracingSpanImpl* TracingSpanImpl::Top() { return top_tracing_span_; } 25 Pop()26void TracingSpanImpl::Pop() { 27 FCP_CHECK(top_tracing_span_ == this); 28 top_tracing_span_ = prev_; 29 } 30 Push()31void TracingSpanImpl::Push() { 32 FCP_CHECK(prev_ == nullptr); 33 prev_ = top_tracing_span_; 34 top_tracing_span_ = this; 35 } 36 37 } // namespace tracing_internal 38 } // namespace fcp 39