58 lines
2.0 KiB
C++
58 lines
2.0 KiB
C++
/*
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* Copyright (C) 2022 The Android Open Source Project
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*
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* Licensed under the Apache License, Version 2.0 (the "License");
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* you may not use this file except in compliance with the License.
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* You may obtain a copy of the License at
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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS,
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* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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* See the License for the specific language governing permissions and
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* limitations under the License.
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*/
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#include <cstdint>
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#define LOG_TAG "sharedtest"
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#include <utils/Log.h>
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// Test library which is dynamicly loaded by library_tests.
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// Static variable construction.
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// Calls A constructor on library load, A destructor on library unload.
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int32_t *gPtr = nullptr; // this pointer is filled with the location to set memory
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// when ~A() is called.
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// we cannot use anything internal to this file as the
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// data segment may no longer exist after unloading the library.
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struct A {
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A() {
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ALOGD("%s: gPtr:%p", __func__, gPtr);
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}
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~A() {
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ALOGD("%s: gPtr:%p", __func__, gPtr);
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if (gPtr != nullptr) {
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*gPtr = 1;
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}
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}
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} gA;
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// __attribute__((constructor)) methods occur before any static variable construction.
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// Libraries that use __attribute__((constructor)) should not rely on global constructors
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// before method call because they will not be initialized before use.
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// See heapprofd_client_api.
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// NOTE: is this right? Shouldn't it occur after construction?
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__attribute__((constructor))
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void onConstruction() {
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ALOGD("%s: in progress", __func__); // for logcat analysis
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}
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// __attribute__((destructor)) methods occur before any static variable destruction.
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__attribute__((destructor))
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void onDestruction() {
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ALOGD("%s: in progress", __func__); // for logcat analysis
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}
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