Index/detail / impl / stack.ipp

detail/impl/stack.ipp

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f(x) Functions (6)
Function Calls Lines Branches Blocks
boost::json::detail::stack::non_trivial<void>::destroy() :20 1x 100.0% – 100.0% boost::json::detail::stack::non_trivial<void>::relocate(void*) :28 3x 100.0% – 100.0% boost::json::detail::stack::~stack() :34 2185850x 100.0% – 100.0% boost::json::detail::stack::stack(boost::json::storage_ptr, unsigned char*, unsigned long) :43 21245x 100.0% – 100.0% boost::json::detail::stack::clear() :56 6360224x 100.0% – 100.0% boost::json::detail::stack::reserve_impl(unsigned long) :65 124748x 100.0% – 92.0%
Line TLA Hits Source Code
1 //
2 // Copyright (c) 2019 Vinnie Falco (vinnie.falco@gmail.com)
3 //
4 // Distributed under the Boost Software License, Version 1.0. (See accompanying
5 // file LICENSE_1_0.txt or copy at http://www.boost.org/LICENSE_1_0.txt)
6 //
7 // Official repository: https://github.com/boostorg/json
8 //
9
10 #ifndef BOOST_JSON_DETAIL_IMPL_STACK_IPP
11 #define BOOST_JSON_DETAIL_IMPL_STACK_IPP
12
13 #include <boost/json/detail/stack.hpp>
14
15 namespace boost {
16 namespace json {
17 namespace detail {
18
19 stack::non_trivial<>*
20 1x stack::non_trivial<>::destroy() noexcept
21 {
22 1x non_trivial* const result = next;
23 1x rel(this, nullptr);
24 1x return result;
25 }
26
27 stack::non_trivial<>*
28 3x stack::non_trivial<>::relocate(void* dst) noexcept
29 {
30 3x return rel(this, dst);
31 }
32
33
34 2185850x stack::
35 ~stack()
36 {
37 2185850x clear();
38 2185850x if(base_ != buf_)
39 118086x sp_->deallocate(
40 118086x base_, cap_);
41 2185850x }
42
43 21245x stack::
44 stack(
45 storage_ptr sp,
46 unsigned char* buf,
47 21245x std::size_t buf_size) noexcept
48 21245x : sp_(std::move(sp))
49 21245x , cap_(buf_size)
50 21245x , base_(buf)
51 21245x , buf_(buf)
52 {
53 21245x }
54
55 void
56 6360224x stack::
57 clear() noexcept
58 {
59 6360225x while(head_)
60 1x head_ = head_->destroy();
61 6360224x size_ = 0;
62 6360224x }
63
64 void
65 124748x stack::
66 reserve_impl(std::size_t n)
67 {
68 // caller checks this
69 124748x BOOST_ASSERT(n > cap_);
70
71 124748x auto const base = static_cast<unsigned char*>( sp_->allocate(n) );
72 124746x if(base_)
73 {
74 // copy trivials
75 6660x std::memcpy(base, base_, size_);
76
77 // copy non-trivials
78 6660x non_trivial<>* src = head_;
79 6660x non_trivial<>** prev = &head_;
80 6663x while(src)
81 {
82 3x std::size_t const buf_offset =
83 3x reinterpret_cast<unsigned char*>(src) - base_;
84 3x non_trivial<>* dest = src->relocate(base + buf_offset);
85 3x *prev = dest;
86 3x prev = &dest->next;
87 3x src = dest->next;
88 }
89
90 6660x if(base_ != buf_)
91 6660x sp_->deallocate(base_, cap_);
92 }
93 124746x base_ = base;
94 124746x cap_ = n;
95 124746x }
96
97 } // detail
98 } // namespace json
99 } // namespace boost
100
101 #endif
102