| 1 | //===----------------------------------------------------------------------===// |
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| 2 | // |
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| 3 | // Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions. |
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| 4 | // See https://llvm.org/LICENSE.txt for license information. |
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| 5 | // SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception |
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| 6 | // |
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| 7 | //===----------------------------------------------------------------------===// |
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| 8 | |
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| 9 | // UNSUPPORTED: c++03, c++11, c++14 |
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| 10 | // TODO: Change to XFAIL once https://github.com/llvm/llvm-project/issues/40340 is fixed |
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| 11 | // UNSUPPORTED: availability-pmr-missing |
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| 12 | |
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| 13 | // <memory_resource> |
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| 14 | |
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| 15 | // class monotonic_buffer_resource |
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| 16 | |
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| 17 | #include <memory_resource> |
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| 18 | #include <cassert> |
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| 19 | |
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| 20 | #include "count_new.h" |
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| 21 | #include "test_macros.h" |
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| 22 | |
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| 23 | int main(int, char**) { |
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| 24 | { |
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| 25 | globalMemCounter.reset(); |
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| 26 | |
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| 27 | auto mono1 = std::pmr::monotonic_buffer_resource(std::pmr::new_delete_resource()); |
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| 28 | std::pmr::memory_resource& r1 = mono1; |
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| 29 | |
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| 30 | void* ret = r1.allocate(bytes: 50); |
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| 31 | assert(ret); |
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| 32 | ASSERT_WITH_LIBRARY_INTERNAL_ALLOCATIONS(globalMemCounter.checkNewCalledGreaterThan(0)); |
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| 33 | assert(globalMemCounter.checkDeleteCalledEq(0)); |
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| 34 | |
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| 35 | // mem.res.monotonic.buffer 1.2 |
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| 36 | // A call to deallocate has no effect, thus the amount of memory |
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| 37 | // consumed increases monotonically until the resource is destroyed. |
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| 38 | // Check that deallocate is a no-op |
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| 39 | r1.deallocate(p: ret, bytes: 50); |
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| 40 | assert(globalMemCounter.checkDeleteCalledEq(0)); |
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| 41 | |
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| 42 | mono1.release(); |
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| 43 | ASSERT_WITH_LIBRARY_INTERNAL_ALLOCATIONS(globalMemCounter.checkDeleteCalledEq(1)); |
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| 44 | assert(globalMemCounter.checkOutstandingNewEq(0)); |
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| 45 | |
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| 46 | globalMemCounter.reset(); |
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| 47 | |
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| 48 | ret = r1.allocate(bytes: 500); |
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| 49 | assert(ret); |
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| 50 | ASSERT_WITH_LIBRARY_INTERNAL_ALLOCATIONS(globalMemCounter.checkNewCalledGreaterThan(0)); |
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| 51 | assert(globalMemCounter.checkDeleteCalledEq(0)); |
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| 52 | |
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| 53 | // Check that the destructor calls release() |
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| 54 | } |
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| 55 | ASSERT_WITH_LIBRARY_INTERNAL_ALLOCATIONS(globalMemCounter.checkDeleteCalledEq(1)); |
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| 56 | assert(globalMemCounter.checkOutstandingNewEq(0)); |
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| 57 | |
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| 58 | return 0; |
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| 59 | } |
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| 60 | |
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