1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
|
% PT_ISCACHE_ALLOC(3)
<!---
! Copyright (c) 2015-2025, Intel Corporation
! SPDX-License-Identifier: BSD-3-Clause
!
! 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 Intel Corporation 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 COPYRIGHT HOLDERS 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 COPYRIGHT OWNER 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.
!-->
# NAME
pt_iscache_alloc, pt_iscache_free, pt_iscache_name - allocate/free a traced memory
image section cache
# SYNOPSIS
| **\#include `<intel-pt.h>`**
|
| **struct pt_image_section_cache \*pt_iscache_alloc(const char \**name*);**
| **const char \*pt_iscache_name(const struct pt_image_section_cache \**iscache*);**
| **void pt_iscache_free(struct pt_image_section_cache \**iscache*);**
Link with *-lipt*.
# DESCRIPTION
**pt_iscache_alloc**() allocates a new *pt_image_section_cache* and returns a
pointer to it. A *pt_image_section_cache* object contains a collection of file
sections and the virtual addresses at which those sections were loaded.
The image sections can be added to one or more *pt_image* objects. The
underlying file sections will be mapped once and their content will be shared
across images.
The *name* argument points to an optional zero-terminated name string. If the
*name* argument is NULL, it will be ignored and the returned
*pt_image_section_cache* object will not have a name. Otherwise, the returned
*pt_image_section_object* object will have a copy of the string pointed to by
the *name* argument as name.
**pt_iscache_name**() returns the name of the *pt_image_section_cache* object
the *iscache* argument points to.
**pt_iscache_free**() frees the *pt_image_section_cache* object pointed to by
*iscache*. The *iscache* argument must be NULL or point to an image section
cache that has been allocated by a call to **pt_iscache_alloc**().
# RETURN VALUE
**pt_iscache_alloc**() returns a pointer to a *pt_image_section_cache* object
on success or NULL in case of an error.
**pt_iscache_name**() returns a pointer to a zero-terminated string of NULL if the
image section cache does not have a name.
# EXAMPLE
~~~{.c}
int foo(const char *name) {
struct pt_image_section_cache *iscache;
errcode;
image = pt_iscache_alloc(name);
if (!iscache)
return pte_nomem;
errcode = bar(iscache);
pt_iscache_free(iscache);
return errcode;
}
~~~
# SEE ALSO
**pt_iscache_add_file**(3), **pt_image_add_cached**(3)
|
