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57 lines
1.6 KiB
57 lines
1.6 KiB
/*
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* Copyright (C) 2019 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 <jni.h>
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#include <stdlib.h>
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#include <unistd.h>
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namespace {
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// Must be kept in sync with heapprofd_test_cts.cc
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constexpr int kIndividualAllocSz = 4153;
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constexpr int kAllocationIntervalUs = 10 * 1000;
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__attribute__((noreturn)) void perfetto_test_allocations() {
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for (;;) {
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// volatile & use avoids builtin malloc optimizations
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volatile char* x = static_cast<char*>(malloc(kIndividualAllocSz));
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if (x) {
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x[0] = '\0';
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free(const_cast<char*>(x));
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}
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usleep(kAllocationIntervalUs);
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}
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}
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// Runs continuously as a target for the sampling perf profiler tests.
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__attribute__((noreturn)) void perfetto_busy_wait() {
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for (volatile unsigned i = 0;; i++) {
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}
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}
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} // namespace
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extern "C" JNIEXPORT void JNICALL
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Java_android_perfetto_cts_app_MainActivity_runNative(JNIEnv*, jclass) {
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perfetto_test_allocations();
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}
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extern "C" JNIEXPORT void JNICALL
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Java_android_perfetto_cts_app_BusyWaitActivity_runNativeBusyWait(JNIEnv*,
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jclass) {
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perfetto_busy_wait();
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}
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