7c32e412b8
Add APIs for t(ree) alloc(ated) memory management. These APIs allocate memory like malloc, but track those allocations via a parent-child relationship, or tree. If the parent is freed while it still has children, a panic will be triggered. This effectively gives you the ability to limit the lifetime of an allocation by ensuring the child allocation lifetime will be strictly less than the parent allocation lifetime. Change-Id: I6308c96061e125b2e5a9c424ec2d2298c1c503ab CRs-Fixed: 2359469
71 خطوط
1.6 KiB
C
71 خطوط
1.6 KiB
C
/*
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* Copyright (c) 2018 The Linux Foundation. All rights reserved.
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*
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* Permission to use, copy, modify, and/or distribute this software for
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* any purpose with or without fee is hereby granted, provided that the
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* above copyright notice and this permission notice appear in all
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* copies.
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*
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* THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL
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* WARRANTIES WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED
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* WARRANTIES OF MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE
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* AUTHOR BE LIABLE FOR ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL
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* DAMAGES OR ANY DAMAGES WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR
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* PROFITS, WHETHER IN AN ACTION OF CONTRACT, NEGLIGENCE OR OTHER
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* TORTIOUS ACTION, ARISING OUT OF OR IN CONNECTION WITH THE USE OR
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* PERFORMANCE OF THIS SOFTWARE.
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*/
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#include "qdf_status.h"
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#include "qdf_talloc.h"
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#include "qdf_talloc_test.h"
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#include "qdf_trace.h"
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static uint32_t qdf_talloc_test_alloc_free(void)
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{
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uint32_t value;
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uint32_t *root;
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uint32_t *child;
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root = &value;
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child = qdf_talloc_type(root, child);
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QDF_BUG(child);
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qdf_tfree(child);
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return 0;
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}
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static uint32_t qdf_talloc_test_parent_child(void)
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{
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uint32_t value;
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uint32_t *root;
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uint32_t *parent;
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uint32_t *child;
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root = &value;
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parent = qdf_talloc_type(root, parent);
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QDF_BUG(parent);
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child = qdf_talloc_type(parent, child);
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QDF_BUG(child);
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qdf_tfree(child);
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qdf_tfree(parent);
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return 0;
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}
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uint32_t qdf_talloc_unit_test(void)
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{
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uint32_t errors = 0;
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errors += qdf_talloc_test_alloc_free();
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errors += qdf_talloc_test_parent_child();
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return errors;
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}
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