17589970077-2502

Committed 09 Sep 2025 05:00PM UTC coverage: 65.196% (-5.0%) from 70.225%

Build # 17589970077-2502

Build Type

push

github

Committed by

tstack

Commit Message

[format] add fields for source file/line

Knowing the source file/line context in a log
message can help find log messages when using
log2src.

Run Details

56 of 70 new or added lines in 2 files covered. (80.0%)

13954 existing lines in 210 files now uncovered.

45516 of 69814 relevant lines covered (65.2%)

404154.37 hits per line

Source File
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91.07

/src/shared_buffer.hh

/**
 * 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.hh
 */

#ifndef shared_buffer_hh
#define shared_buffer_hh

#include <string>
#include <string_view>
#include <vector>

#include <string.h>
#include <sys/types.h>

#include "base/auto_mem.hh"
#include "base/file_range.hh"
#include "base/intern_string.hh"
#include "base/line_range.hh"
#include "base/lnav_log.hh"

class shared_buffer;

#define SHARED_BUFFER_TRACE 0

struct shared_buffer_ref {
    shared_buffer_ref(const char* data = nullptr, size_t len = 0)
        : sb_owner(nullptr), sb_data(data), sb_length(len)
    {
    }

    ~shared_buffer_ref() { this->disown(); }

    shared_buffer_ref(const shared_buffer_ref& other) = delete;

    shared_buffer_ref(shared_buffer_ref&& other) noexcept;

    shared_buffer_ref& operator=(const shared_buffer_ref& other) = delete;

    shared_buffer_ref clone() const
    {
        shared_buffer_ref retval;

        retval.copy_ref(*this);

        return retval;
    }

    shared_buffer_ref& operator=(shared_buffer_ref&& other) noexcept;

    bool empty() const
    {
        return this->sb_data == nullptr || this->sb_length == 0;
    }

    const char* get_data() const { return this->sb_data; }

    const char* get_data_at(off_t offset) const
    {
        return &this->sb_data[offset];
    }

    size_t length() const { return this->sb_length; }

    shared_buffer_ref& rtrim(bool pred(char))
    {
        while (this->sb_length > 0 && pred(this->sb_data[this->sb_length - 1]))
        {
            this->sb_length -= 1;
        }

        return *this;
    }

    bool contains(const char* ptr) const
    {
        const char* buffer_end = this->sb_data + this->sb_length;

        return (this->sb_data <= ptr && ptr < buffer_end);
    }

    const file_range::metadata& get_metadata() const { return this->sb_metadata; }

    file_range::metadata& get_metadata() { return this->sb_metadata; }

    char* get_writable_data(size_t length)
    {
        if (this->take_ownership(length)) {
            return const_cast<char*>(this->sb_data);
        }

        return nullptr;
    }

    char* get_writable_data()
    {
        return this->get_writable_data(this->sb_length);
    }

    string_fragment to_string_fragment(off_t offset, size_t len) const
    {
        return string_fragment{
            this->sb_data, (int) offset, (int) (offset + len)};
    }

    string_fragment to_string_fragment() const
    {
        return string_fragment::from_bytes(this->sb_data, this->length());
    }

    std::string_view to_string_view(const line_range& lr) const
    {
        return std::string_view{
            this->get_data_at(lr.lr_start),
            static_cast<std::string_view::size_type>(lr.length()),
        };
    }

    std::string_view to_string_view() const
    {
        return std::string_view{
            this->sb_data,
            this->sb_length,
        };
    }

    using narrow_result = std::pair<const char*, size_t>;
    narrow_result narrow(size_t new_data, size_t new_length);

    void widen(narrow_result old_data_length);

    void share(shared_buffer& sb, const char* data, size_t len);

    bool subset(shared_buffer_ref& other, off_t offset, size_t len);

    void erase_ansi();

    bool take_ownership(size_t length);

    bool take_ownership() { return this->take_ownership(this->sb_length); }

    void disown();

private:
    void copy_ref(const shared_buffer_ref& other);

#if SHARED_BUFFER_TRACE
    auto_mem<char*> sb_backtrace;
#endif
    file_range::metadata sb_metadata;
    shared_buffer* sb_owner;
    const char* sb_data;
    size_t sb_length;
};

class shared_buffer {
public:
    ~shared_buffer() { this->invalidate_refs(); }

    void add_ref(shared_buffer_ref& ref) { this->sb_refs.push_back(&ref); }

    bool invalidate_refs()
    {
        bool retval = true;

        while (!this->sb_refs.empty()) {
            auto iter = this->sb_refs.begin();

            retval = retval && (*iter)->take_ownership();
        }

        return retval;
    }

    std::vector<shared_buffer_ref*> sb_refs;
};

inline std::string
to_string(const shared_buffer_ref& sbr)
{
    return {sbr.get_data(), sbr.length()};
}

#endif

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.hh
30	*/
31
32	#ifndef shared_buffer_hh
33	#define shared_buffer_hh
34
35	#include <string>
36	#include <string_view>
37	#include <vector>
38
39	#include <string.h>
40	#include <sys/types.h>
41
42	#include "base/auto_mem.hh"
43	#include "base/file_range.hh"
44	#include "base/intern_string.hh"
45	#include "base/line_range.hh"
46	#include "base/lnav_log.hh"
47
48	class shared_buffer;
49
50	#define SHARED_BUFFER_TRACE 0
51
52	struct shared_buffer_ref {
53	shared_buffer_ref(const char* data = nullptr, size_t len = 0)	145,019✔
54	: sb_owner(nullptr), sb_data(data), sb_length(len)	145,019✔
55	{
56	}	145,019✔
57
58	~shared_buffer_ref() { this->disown(); }	607,493✔
59
60	shared_buffer_ref(const shared_buffer_ref& other) = delete;
61
62	shared_buffer_ref(shared_buffer_ref&& other) noexcept;
63
64	shared_buffer_ref& operator=(const shared_buffer_ref& other) = delete;
65
66	shared_buffer_ref clone() const	6,380✔
67	{
68	shared_buffer_ref retval;	6,380✔
69
70	retval.copy_ref(*this);	6,380✔
71
72	return retval;	6,380✔
UNCOV 73	}	×
74
75	shared_buffer_ref& operator=(shared_buffer_ref&& other) noexcept;
76
77	bool empty() const	11,824✔
78	{
79	return this->sb_data == nullptr \|\| this->sb_length == 0;	11,824✔
80	}
81
82	const char* get_data() const { return this->sb_data; }	1,035,272✔
83
84	const char* get_data_at(off_t offset) const	302,510✔
85	{
86	return &this->sb_data[offset];	302,510✔
87	}
88
89	size_t length() const { return this->sb_length; }	760,772✔
90
91	shared_buffer_ref& rtrim(bool pred(char))	40,909✔
92	{
93	while (this->sb_length > 0 && pred(this->sb_data[this->sb_length - 1]))	57,439✔
94	{
95	this->sb_length -= 1;	16,530✔
96	}
97
98	return *this;	40,909✔
99	}
100
101	bool contains(const char* ptr) const	5,006✔
102	{
103	const char* buffer_end = this->sb_data + this->sb_length;	5,006✔
104
105	return (this->sb_data <= ptr && ptr < buffer_end);	5,006✔
106	}
107
108	const file_range::metadata& get_metadata() const { return this->sb_metadata; }	594✔
109
110	file_range::metadata& get_metadata() { return this->sb_metadata; }	125,810✔
111
112	char* get_writable_data(size_t length)	202✔
113	{
114	if (this->take_ownership(length)) {	202✔
115	return const_cast<char*>(this->sb_data);	202✔
116	}
117
118	return nullptr;	×
119	}
120
121	char* get_writable_data()	202✔
122	{
123	return this->get_writable_data(this->sb_length);	202✔
124	}
125
126	string_fragment to_string_fragment(off_t offset, size_t len) const	×
127	{
128	return string_fragment{	×
129	this->sb_data, (int) offset, (int) (offset + len)};	×
130	}
131
132	string_fragment to_string_fragment() const	734,612✔
133	{
134	return string_fragment::from_bytes(this->sb_data, this->length());	734,612✔
135	}
136
137	std::string_view to_string_view(const line_range& lr) const	302,492✔
138	{
139	return std::string_view{	302,492✔
140	this->get_data_at(lr.lr_start),	302,492✔
141	static_cast<std::string_view::size_type>(lr.length()),	302,492✔
142	};	302,492✔
143	}
144
145	std::string_view to_string_view() const	15✔
146	{
147	return std::string_view{	30✔
148	this->sb_data,	15✔
149	this->sb_length,	15✔
150	};	15✔
151	}
152
153	using narrow_result = std::pair<const char*, size_t>;
154	narrow_result narrow(size_t new_data, size_t new_length);
155
156	void widen(narrow_result old_data_length);
157
158	void share(shared_buffer& sb, const char* data, size_t len);
159
160	bool subset(shared_buffer_ref& other, off_t offset, size_t len);
161
162	void erase_ansi();
163
164	bool take_ownership(size_t length);
165
166	bool take_ownership() { return this->take_ownership(this->sb_length); }	1,776✔
167
168	void disown();
169
170	private:
171	void copy_ref(const shared_buffer_ref& other);
172
173	#if SHARED_BUFFER_TRACE
174	auto_mem<char*> sb_backtrace;
175	#endif
176	file_range::metadata sb_metadata;
177	shared_buffer* sb_owner;
178	const char* sb_data;
179	size_t sb_length;
180	};
181
182	class shared_buffer {
183	public:
184	~shared_buffer() { this->invalidate_refs(); }	44,282✔
185
186	void add_ref(shared_buffer_ref& ref) { this->sb_refs.push_back(&ref); }	97,962✔
187
188	bool invalidate_refs()	52,025✔
189	{
190	bool retval = true;	52,025✔
191
192	while (!this->sb_refs.empty()) {	53,801✔
193	auto iter = this->sb_refs.begin();	1,776✔
194
195	retval = retval && (*iter)->take_ownership();	1,776✔
196	}
197
198	return retval;	52,025✔
199	}
200
201	std::vector<shared_buffer_ref*> sb_refs;
202	};
203
204	inline std::string
205	to_string(const shared_buffer_ref& sbr)	4,065✔
206	{
207	return {sbr.get_data(), sbr.length()};	12,195✔
208	}
209
210	#endif

tstack / lnav / 17589970077-2502

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