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59 lines
2.5 KiB
59 lines
2.5 KiB
/****************************************************************************** |
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* |
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* Copyright (C) 2014 Google, Inc. |
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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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******************************************************************************/ |
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#pragma once |
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#include <stdbool.h> |
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#include <stddef.h> |
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#include <stdint.h> |
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typedef struct allocation_tracker_t allocation_tracker_t; |
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typedef uint8_t allocator_id_t; |
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// Initialize the allocation tracker. If you do not call this function, |
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// the allocation tracker functions do nothing but are still safe to call. |
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void allocation_tracker_init(void); |
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// Reset the allocation tracker. Don't call this in the normal course of |
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// operations. Useful mostly for testing. |
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void allocation_tracker_reset(void); |
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// Expects that there are no allocations at the time of this call. Dumps |
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// information about unfreed allocations to the log. Returns the amount of |
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// unallocated memory. |
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size_t allocation_tracker_expect_no_allocations(void); |
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// Notify the tracker of a new allocation belonging to |allocator_id|. |
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// If |ptr| is NULL, this function does nothing. |requested_size| is the |
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// size of the allocation without any canaries. The caller must allocate |
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// enough memory for canaries; the total allocation size can be determined |
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// by calling |allocation_tracker_resize_for_canary|. Returns |ptr| offset |
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// to the the beginning of the uncanaried region. |
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void* allocation_tracker_notify_alloc(allocator_id_t allocator_id, void* ptr, |
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size_t requested_size); |
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// Notify the tracker of an allocation that is being freed. |ptr| must be a |
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// pointer returned by a call to |allocation_tracker_notify_alloc| with the |
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// same |allocator_id|. If |ptr| is NULL, this function does nothing. Returns |
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// |ptr| offset to the real beginning of the allocation including any canary |
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// space. |
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void* allocation_tracker_notify_free(allocator_id_t allocator_id, void* ptr); |
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// Get the full size for an allocation, taking into account the size of |
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// canaries. |
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size_t allocation_tracker_resize_for_canary(size_t size);
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