25603066199-3032

Committed 09 May 2026 02:05PM UTC coverage: 70.204% (+0.04%) from 70.162%

Build # 25603066199-3032

Build Type

push

github

Committed by

tstack

Commit Message

[tabular] multi-line support

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238 of 261 new or added lines in 9 files covered. (91.19%)

10 existing lines in 3 files now uncovered.

57551 of 81977 relevant lines covered (70.2%)

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70.59

/src/shared_buffer.cc

/**
 * Copyright (c) 2014, Timothy Stack
 *
 * All rights reserved.
 *
 * Redistribution and use in source and binary forms, with or without
 * modification, are permitted provided that the following conditions are met:
 *
 * * Redistributions of source code must retain the above copyright notice, this
 * list of conditions and the following disclaimer.
 * * Redistributions in binary form must reproduce the above copyright notice,
 * this list of conditions and the following disclaimer in the documentation
 * and/or other materials provided with the distribution.
 * * Neither the name of Timothy Stack nor the names of its contributors
 * may be used to endorse or promote products derived from this software
 * without specific prior written permission.
 *
 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ''AS IS'' AND ANY
 * EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
 * WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
 * DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE FOR ANY
 * DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
 * (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
 * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND
 * ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
 * SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
 *
 * @file shared_buffer.cc
 */

#include "config.h"

#ifdef HAVE_EXECINFO_H
// clang-format off
#    include <sys/types.h>
// clang-format on

#    include <execinfo.h>
#endif

#include <algorithm>

#include "base/ansi_scrubber.hh"
#include "shared_buffer.hh"

void
shared_buffer_ref::share(shared_buffer& sb, const char* data, size_t len)
{
#if SHARED_BUFFER_TRACE
    void* frames[128];
    int rc;

    rc = backtrace(frames, 128);
    this->sb_backtrace.reset(backtrace_symbols(frames, rc));
#endif

    this->disown();

    sb.add_ref(*this);
    this->sb_owner = &sb;
    this->sb_data = data;
    this->sb_length = len;

    ensure(this->sb_length < (10 * 1024 * 1024));
}

bool
shared_buffer_ref::subset(shared_buffer_ref& other, off_t offset, size_t len)
{
    this->disown();

    if (offset != -1) {
        this->sb_owner = other.sb_owner;
        this->sb_length = len;
        if (this->sb_owner == nullptr) {
            if ((this->sb_data = (char*) malloc(this->sb_length)) == nullptr) {
                return false;
            }

            memcpy(
                const_cast<char*>(this->sb_data), &other.sb_data[offset], len);
        } else {
            this->sb_owner->add_ref(*this);
            this->sb_data = &other.sb_data[offset];
        }
    }
    return true;
}

shared_buffer_ref::
shared_buffer_ref(shared_buffer_ref&& other) noexcept
{
    if (other.sb_data == nullptr) {
        this->sb_owner = nullptr;
        this->sb_data = nullptr;
        this->sb_length = 0;
    } else if (other.sb_owner != nullptr) {
        auto owner_ref_iter = std::find(other.sb_owner->sb_refs.rbegin(),
                                        other.sb_owner->sb_refs.rend(),
                                        &other);
        *owner_ref_iter = this;
        this->sb_owner = std::exchange(other.sb_owner, nullptr);
        this->sb_data = std::exchange(other.sb_data, nullptr);
        this->sb_length = std::exchange(other.sb_length, 0);
    } else {
        this->sb_owner = nullptr;
        this->sb_data = other.sb_data;
        this->sb_length = other.sb_length;
        other.sb_data = nullptr;
        other.sb_length = 0;
    }
    this->sb_metadata = other.sb_metadata;
    other.sb_metadata = {};
}

shared_buffer_ref&
shared_buffer_ref::operator=(shared_buffer_ref&& other) noexcept
{
    this->disown();

    if (other.sb_data == nullptr) {
        this->sb_owner = nullptr;
        this->sb_data = nullptr;
        this->sb_length = 0;
    } else if (other.sb_owner != nullptr) {
        auto owner_ref_iter = std::find(other.sb_owner->sb_refs.rbegin(),
                                        other.sb_owner->sb_refs.rend(),
                                        &other);
        *owner_ref_iter = this;
        this->sb_owner = std::exchange(other.sb_owner, nullptr);
        this->sb_data = std::exchange(other.sb_data, nullptr);
        this->sb_length = std::exchange(other.sb_length, 0);
    } else {
        this->sb_owner = nullptr;
        this->sb_data = other.sb_data;
        this->sb_length = other.sb_length;
        other.sb_data = nullptr;
        other.sb_length = 0;
    }
    this->sb_metadata = other.sb_metadata;
    other.sb_metadata = {};

    return *this;
}

bool
shared_buffer_ref::take_ownership(size_t length)
{
    if ((this->sb_owner != nullptr && this->sb_data != nullptr)
        || this->sb_length != length)
    {
        auto* new_data = (char*) malloc(length);
        if (new_data == nullptr) {
            return false;
        }

        memcpy(new_data, this->sb_data, std::min(length, this->sb_length));
        this->sb_length = length;
        this->sb_data = new_data;
        this->sb_owner->sb_refs.erase(find(this->sb_owner->sb_refs.begin(),
                                           this->sb_owner->sb_refs.end(),
                                           this));
        this->sb_owner = nullptr;
    }
    return true;
}

void
shared_buffer_ref::disown()
{
    if (this->sb_owner == nullptr) {
        if (this->sb_data != nullptr) {
            free(const_cast<char*>(this->sb_data));
        }
    } else {
        this->sb_owner->sb_refs.erase(find(this->sb_owner->sb_refs.begin(),
                                           this->sb_owner->sb_refs.end(),
                                           this));
    }
    this->sb_owner = nullptr;
    this->sb_data = nullptr;
    this->sb_length = 0;
    this->sb_metadata = {};
}

void
shared_buffer_ref::copy_ref(const shared_buffer_ref& other)
{
    if (other.sb_data == nullptr) {
        this->sb_owner = nullptr;
        this->sb_data = nullptr;
        this->sb_length = 0;
    } else if (other.sb_owner != nullptr) {
        this->share(*other.sb_owner, other.sb_data, other.sb_length);
    } else {
        this->sb_owner = nullptr;
        this->sb_data = (char*) malloc(other.sb_length);
        memcpy(
            const_cast<char*>(this->sb_data), other.sb_data, other.sb_length);
        this->sb_length = other.sb_length;
    }
    this->sb_metadata = other.sb_metadata;
}

shared_buffer_ref::narrow_result
shared_buffer_ref::narrow(size_t new_data, size_t new_length)
{
    return std::make_pair(
        std::exchange(this->sb_data, this->sb_data + new_data),
        std::exchange(this->sb_length, new_length));
}

void
shared_buffer_ref::widen(narrow_result old_data_length)
{
    this->sb_data = old_data_length.first;
    this->sb_length = old_data_length.second;
}

void
shared_buffer_ref::erase_ansi()
{
    if (!this->sb_metadata.m_valid_utf || !this->sb_metadata.m_has_ansi) {
        return;
    }

    auto* writable_data = this->get_writable_data();
    auto new_len = erase_ansi_escapes(
        string_fragment::from_bytes(writable_data, this->sb_length));

    this->sb_length = new_len;
    this->sb_metadata.m_has_ansi = false;
}

1	/**
2	* Copyright (c) 2014, Timothy Stack
3	*
4	* All rights reserved.
5	*
6	* Redistribution and use in source and binary forms, with or without
7	* modification, are permitted provided that the following conditions are met:
8	*
9	* * Redistributions of source code must retain the above copyright notice, this
10	* list of conditions and the following disclaimer.
11	* * Redistributions in binary form must reproduce the above copyright notice,
12	* this list of conditions and the following disclaimer in the documentation
13	* and/or other materials provided with the distribution.
14	* * Neither the name of Timothy Stack nor the names of its contributors
15	* may be used to endorse or promote products derived from this software
16	* without specific prior written permission.
17	*
18	* THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ''AS IS'' AND ANY
19	* EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
20	* WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
21	* DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE FOR ANY
22	* DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
23	* (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
24	* LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND
25	* ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
26	* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
27	* SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
28	*
29	* @file shared_buffer.cc
30	*/
31
32	#include "config.h"
33
34	#ifdef HAVE_EXECINFO_H
35	// clang-format off
36	# include <sys/types.h>
37	// clang-format on
38
39	# include <execinfo.h>
40	#endif
41
42	#include <algorithm>
43
44	#include "base/ansi_scrubber.hh"
45	#include "shared_buffer.hh"
46
47	void
48	shared_buffer_ref::share(shared_buffer& sb, const char* data, size_t len)	155,671✔
49	{
50	#if SHARED_BUFFER_TRACE
51	void* frames[128];
52	int rc;
53
54	rc = backtrace(frames, 128);
55	this->sb_backtrace.reset(backtrace_symbols(frames, rc));
56	#endif
57
58	this->disown();	155,671✔
59
60	sb.add_ref(*this);	155,671✔
61	this->sb_owner = &sb;	155,671✔
62	this->sb_data = data;	155,671✔
63	this->sb_length = len;	155,671✔
64
65	ensure(this->sb_length < (10 * 1024 * 1024));	155,671✔
66	}	155,671✔
67
68	bool
69	shared_buffer_ref::subset(shared_buffer_ref& other, off_t offset, size_t len)	×
70	{
71	this->disown();	×
72
73	if (offset != -1) {	×
74	this->sb_owner = other.sb_owner;	×
75	this->sb_length = len;	×
76	if (this->sb_owner == nullptr) {	×
77	if ((this->sb_data = (char*) malloc(this->sb_length)) == nullptr) {	×
78	return false;	×
79	}
80
81	memcpy(	×
82	const_cast<char*>(this->sb_data), &other.sb_data[offset], len);	×
83	} else {
84	this->sb_owner->add_ref(*this);	×
85	this->sb_data = &other.sb_data[offset];	×
86	}
87	}
88	return true;	×
89	}
90
91	shared_buffer_ref::	750,998✔
92	shared_buffer_ref(shared_buffer_ref&& other) noexcept	750,998✔
93	{
94	if (other.sb_data == nullptr) {	750,998✔
95	this->sb_owner = nullptr;	×
96	this->sb_data = nullptr;	×
97	this->sb_length = 0;	×
98	} else if (other.sb_owner != nullptr) {	750,998✔
99	auto owner_ref_iter = std::find(other.sb_owner->sb_refs.rbegin(),	750,998✔
100	other.sb_owner->sb_refs.rend(),	1,501,996✔
101	&other);	1,501,996✔
102	*owner_ref_iter = this;	750,998✔
103	this->sb_owner = std::exchange(other.sb_owner, nullptr);	750,998✔
104	this->sb_data = std::exchange(other.sb_data, nullptr);	750,998✔
105	this->sb_length = std::exchange(other.sb_length, 0);	750,998✔
106	} else {
UNCOV 107	this->sb_owner = nullptr;	×
UNCOV 108	this->sb_data = other.sb_data;	×
UNCOV 109	this->sb_length = other.sb_length;	×
UNCOV 110	other.sb_data = nullptr;	×
UNCOV 111	other.sb_length = 0;	×
112	}
113	this->sb_metadata = other.sb_metadata;	750,998✔
114	other.sb_metadata = {};	750,998✔
115	}	750,998✔
116
117	shared_buffer_ref&
118	shared_buffer_ref::operator=(shared_buffer_ref&& other) noexcept	40,362✔
119	{
120	this->disown();	40,362✔
121
122	if (other.sb_data == nullptr) {	40,362✔
123	this->sb_owner = nullptr;	502✔
124	this->sb_data = nullptr;	502✔
125	this->sb_length = 0;	502✔
126	} else if (other.sb_owner != nullptr) {	39,860✔
127	auto owner_ref_iter = std::find(other.sb_owner->sb_refs.rbegin(),	39,860✔
128	other.sb_owner->sb_refs.rend(),	79,720✔
129	&other);	79,720✔
130	*owner_ref_iter = this;	39,860✔
131	this->sb_owner = std::exchange(other.sb_owner, nullptr);	39,860✔
132	this->sb_data = std::exchange(other.sb_data, nullptr);	39,860✔
133	this->sb_length = std::exchange(other.sb_length, 0);	39,860✔
134	} else {
135	this->sb_owner = nullptr;	×
136	this->sb_data = other.sb_data;	×
137	this->sb_length = other.sb_length;	×
138	other.sb_data = nullptr;	×
139	other.sb_length = 0;	×
140	}
141	this->sb_metadata = other.sb_metadata;	40,362✔
142	other.sb_metadata = {};	40,362✔
143
144	return *this;	40,362✔
145	}
146
147	bool
148	shared_buffer_ref::take_ownership(size_t length)	1,874✔
149	{
150	if ((this->sb_owner != nullptr && this->sb_data != nullptr)	1,874✔
151	\|\| this->sb_length != length)	×
152	{
153	auto* new_data = (char*) malloc(length);	1,874✔
154	if (new_data == nullptr) {	1,874✔
155	return false;	×
156	}
157
158	memcpy(new_data, this->sb_data, std::min(length, this->sb_length));	1,874✔
159	this->sb_length = length;	1,874✔
160	this->sb_data = new_data;	1,874✔
161	this->sb_owner->sb_refs.erase(find(this->sb_owner->sb_refs.begin(),	1,874✔
162	this->sb_owner->sb_refs.end(),	1,874✔
163	this));	1,874✔
164	this->sb_owner = nullptr;	1,874✔
165	}
166	return true;	1,874✔
167	}
168
169	void
170	shared_buffer_ref::disown()	1,265,617✔
171	{
172	if (this->sb_owner == nullptr) {	1,265,617✔
173	if (this->sb_data != nullptr) {	1,111,820✔
174	free(const_cast<char*>(this->sb_data));	1,898✔
175	}
176	} else {
177	this->sb_owner->sb_refs.erase(find(this->sb_owner->sb_refs.begin(),	153,797✔
178	this->sb_owner->sb_refs.end(),	153,797✔
179	this));	307,594✔
180	}
181	this->sb_owner = nullptr;	1,265,617✔
182	this->sb_data = nullptr;	1,265,617✔
183	this->sb_length = 0;	1,265,617✔
184	this->sb_metadata = {};	1,265,617✔
185	}	1,265,617✔
186
187	void
188	shared_buffer_ref::copy_ref(const shared_buffer_ref& other)	8,047✔
189	{
190	if (other.sb_data == nullptr) {	8,047✔
191	this->sb_owner = nullptr;	2,519✔
192	this->sb_data = nullptr;	2,519✔
193	this->sb_length = 0;	2,519✔
194	} else if (other.sb_owner != nullptr) {	5,528✔
195	this->share(*other.sb_owner, other.sb_data, other.sb_length);	5,504✔
196	} else {
197	this->sb_owner = nullptr;	24✔
198	this->sb_data = (char*) malloc(other.sb_length);	24✔
199	memcpy(	24✔
200	const_cast<char*>(this->sb_data), other.sb_data, other.sb_length);	24✔
201	this->sb_length = other.sb_length;	24✔
202	}
203	this->sb_metadata = other.sb_metadata;	8,047✔
204	}	8,047✔
205
206	shared_buffer_ref::narrow_result
207	shared_buffer_ref::narrow(size_t new_data, size_t new_length)	×
208	{
209	return std::make_pair(	×
210	std::exchange(this->sb_data, this->sb_data + new_data),	×
211	std::exchange(this->sb_length, new_length));	×
212	}
213
214	void
215	shared_buffer_ref::widen(narrow_result old_data_length)	×
216	{
217	this->sb_data = old_data_length.first;	×
218	this->sb_length = old_data_length.second;	×
219	}
220
221	void
222	shared_buffer_ref::erase_ansi()	45,044✔
223	{
224	if (!this->sb_metadata.m_valid_utf \|\| !this->sb_metadata.m_has_ansi) {	45,044✔
225	return;	44,848✔
226	}
227
228	auto* writable_data = this->get_writable_data();	196✔
229	auto new_len = erase_ansi_escapes(	196✔
230	string_fragment::from_bytes(writable_data, this->sb_length));
231
232	this->sb_length = new_len;	196✔
233	this->sb_metadata.m_has_ansi = false;	196✔
234	}

tstack / lnav / 25603066199-3032

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