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33 lines
822 B
33 lines
822 B
4 years ago
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/*
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* Copyright (c) Facebook, Inc. and its affiliates.
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*
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* This source code is licensed under the MIT license found in the
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* LICENSE file in the root directory of this source tree.
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*/
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#include <cstddef>
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#include <cstdint>
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extern "C" int mallctl(const char* name, void* oldp, size_t* oldlenp,
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void* newp, size_t newlen) __attribute__((__weak__));
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int main() {
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volatile uint64_t* counter;
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size_t counterLen = sizeof(uint64_t*);
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if (mallctl("thread.allocatedp", static_cast<void*>(&counter), &counterLen,
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nullptr, 0) != 0) {
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return 1;
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}
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if (counterLen != sizeof(uint64_t*)) {
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return 1;
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}
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// false alarm: the spec of mallctl does not special case
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// thread.allocatedp and set counter to a valid pointer
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uint64_t origAllocated = *counter;
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return 0;
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}
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