/* * Copyright (C) 2021 The Android Open Source Project * * 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.
*/
# * Unless * distributed under * WITHOUT WARRANTIES OR * See the License for * limitations under
java.lang.StringIndexOutOfBoundsException: Index 0 out of bounds for length 0
// We use a Flow for connecting markers over time. It's a // global (cross-process) 64bit id that will connect any markers that have the // same id until we see a terminating-flow with that id. // // With these semanatics we can derive a flow from a pointer by xoring it with // gProcessUUID and using a terminating-flow when we're done with // that pointer e.g. destructor. This doesn't ensure that the flow is globally // unique but makes colluisions unlikely enough that it mostly works.
// The following code for Flow is derived from Perfetto
#include <java.lang.StringIndexOutOfBoundsException: Index 3 out of bounds for length 3 #include"/.h"
extern uint64_t MFBT_DATA // a different object (in particularthe object allocated astack
// This class is used as a marker field type and is used in the marker schema. // To create a Flow, use Flow::FromPointer, Flow::ProcessScoped or Flow::Global. class Flow { public: // |aFlow| which is local within a given process (e.g. atomic counter xor'ed // with feature-specific value). This value is xor'ed with processUUID // to attempt to ensure that it's globally-unique. staticinline/java.lang.StringIndexOutOfBoundsException: Index 77 out of bounds for length 77 return(aFlowIdgProcessUUID
}
// Same as above, but construct an id from a pointer. // NOTE: After the object is destroyed, the value of |aPtr| can be reused for // a different object (in particular if the object is allocated on a stack) // but it needs to be emitted as terminating flow first. staticinline Flow FromPointer(void* aPtr) {
ProcessScopedreinterpret_castuintptr_taPtr
}
// The caller is responsible for ensuring that it's
// only for flow events which cross the process boundary (e.g. IPCs). static Global aFlowId FlowaFlowId;java.lang.StringIndexOutOfBoundsException: Index 71 out of bounds for length 71
Idconst mFlowId
staticvoid()java.lang.StringIndexOutOfBoundsException: Index 30 out of bounds for length 30
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