1 | /* |
2 | * Copyright (c) 2012-2013 Apple Computer, Inc. All Rights Reserved. |
3 | * |
4 | * @APPLE_OSREFERENCE_LICENSE_HEADER_START@ |
5 | * |
6 | * This file contains Original Code and/or Modifications of Original Code |
7 | * as defined in and that are subject to the Apple Public Source License |
8 | * Version 2.0 (the 'License'). You may not use this file except in |
9 | * compliance with the License. The rights granted to you under the License |
10 | * may not be used to create, or enable the creation or redistribution of, |
11 | * unlawful or unlicensed copies of an Apple operating system, or to |
12 | * circumvent, violate, or enable the circumvention or violation of, any |
13 | * terms of an Apple operating system software license agreement. |
14 | * |
15 | * Please obtain a copy of the License at |
16 | * http://www.opensource.apple.com/apsl/ and read it before using this file. |
17 | * |
18 | * The Original Code and all software distributed under the License are |
19 | * distributed on an 'AS IS' basis, WITHOUT WARRANTY OF ANY KIND, EITHER |
20 | * EXPRESS OR IMPLIED, AND APPLE HEREBY DISCLAIMS ALL SUCH WARRANTIES, |
21 | * INCLUDING WITHOUT LIMITATION, ANY WARRANTIES OF MERCHANTABILITY, |
22 | * FITNESS FOR A PARTICULAR PURPOSE, QUIET ENJOYMENT OR NON-INFRINGEMENT. |
23 | * Please see the License for the specific language governing rights and |
24 | * limitations under the License. |
25 | * |
26 | * @APPLE_OSREFERENCE_LICENSE_HEADER_END@ |
27 | */ |
28 | |
29 | #define IOKIT_ENABLE_SHARED_PTR |
30 | |
31 | #include <libkern/c++/OSSharedPtr.h> |
32 | #include <IOKit/IOKernelReportStructs.h> |
33 | #include <IOKit/IOKernelReporters.h> |
34 | #include "IOReporterDefs.h" |
35 | |
36 | #define super IOReporter |
37 | OSDefineMetaClassAndStructors(IOSimpleReporter, IOReporter); |
38 | |
39 | /* static */ |
40 | OSSharedPtr<IOSimpleReporter> |
41 | IOSimpleReporter::with(IOService *reportingService, |
42 | IOReportCategories categories, |
43 | IOReportUnit unit) |
44 | { |
45 | OSSharedPtr<IOSimpleReporter> reporter; |
46 | |
47 | reporter = OSMakeShared<IOSimpleReporter>(); |
48 | if (!reporter) { |
49 | return nullptr; |
50 | } |
51 | |
52 | if (!reporter->initWith(reportingService, categories, unit)) { |
53 | return nullptr; |
54 | } |
55 | |
56 | return reporter; |
57 | } |
58 | |
59 | bool |
60 | IOSimpleReporter::initWith(IOService *reportingService, |
61 | IOReportCategories categories, |
62 | IOReportUnit unit) |
63 | { |
64 | // fully specify the channel type for the superclass |
65 | IOReportChannelType channelType = { |
66 | .categories = categories, |
67 | .report_format = kIOReportFormatSimple, |
68 | .nelements = 1, |
69 | .element_idx = 0 |
70 | }; |
71 | |
72 | return super::init(reportingService, channelType, unit); |
73 | } |
74 | |
75 | |
76 | IOReturn |
77 | IOSimpleReporter::setValue(uint64_t channel_id, |
78 | int64_t value) |
79 | { |
80 | IOReturn res = kIOReturnError; |
81 | IOSimpleReportValues simple_values; |
82 | int element_index = 0; |
83 | |
84 | lockReporter(); |
85 | |
86 | if (getFirstElementIndex(channel_id, element_index: &element_index) != kIOReturnSuccess) { |
87 | res = kIOReturnBadArgument; |
88 | goto finish; |
89 | } |
90 | |
91 | |
92 | if (copyElementValues(element_index, elementValues: (IOReportElementValues *)&simple_values) != kIOReturnSuccess) { |
93 | res = kIOReturnBadArgument; |
94 | goto finish; |
95 | } |
96 | |
97 | simple_values.simple_value = value; |
98 | res = setElementValues(element_index, values: (IOReportElementValues *)&simple_values); |
99 | |
100 | finish: |
101 | unlockReporter(); |
102 | return res; |
103 | } |
104 | |
105 | |
106 | IOReturn |
107 | IOSimpleReporter::incrementValue(uint64_t channel_id, |
108 | int64_t increment) |
109 | { |
110 | IOReturn res = kIOReturnError; |
111 | IOSimpleReportValues simple_values; |
112 | int element_index = 0; |
113 | |
114 | lockReporter(); |
115 | |
116 | if (getFirstElementIndex(channel_id, element_index: &element_index) != kIOReturnSuccess) { |
117 | res = kIOReturnBadArgument; |
118 | goto finish; |
119 | } |
120 | |
121 | if (copyElementValues(element_index, elementValues: (IOReportElementValues *)&simple_values) != kIOReturnSuccess) { |
122 | res = kIOReturnBadArgument; |
123 | goto finish; |
124 | } |
125 | |
126 | simple_values.simple_value += increment; |
127 | |
128 | res = setElementValues(element_index, values: (IOReportElementValues *)&simple_values); |
129 | |
130 | finish: |
131 | unlockReporter(); |
132 | return res; |
133 | } |
134 | |
135 | int64_t |
136 | IOSimpleReporter::getValue(uint64_t channel_id) |
137 | { |
138 | IOSimpleReportValues *values = NULL; |
139 | int64_t simple_value = (int64_t)kIOReportInvalidValue; |
140 | int index = 0; |
141 | |
142 | lockReporter(); |
143 | |
144 | if (getFirstElementIndex(channel_id, element_index: &index) == kIOReturnSuccess) { |
145 | values = (IOSimpleReportValues *)getElementValues(element_index: index); |
146 | |
147 | if (values != NULL) { |
148 | simple_value = values->simple_value; |
149 | } |
150 | } |
151 | |
152 | unlockReporter(); |
153 | return simple_value; |
154 | } |
155 | |
156 | /* static */ OSPtr<IOReportLegendEntry> |
157 | IOSimpleReporter::createLegend(const uint64_t *channelIDs, |
158 | const char **channelNames, |
159 | int channelCount, |
160 | IOReportCategories categories, |
161 | IOReportUnit unit) |
162 | { |
163 | IOReportChannelType channelType = { |
164 | .categories = categories, |
165 | .report_format = kIOReportFormatSimple, |
166 | .nelements = 1, |
167 | .element_idx = 0 |
168 | }; |
169 | |
170 | return IOReporter::legendWith(channelIDs, channelNames, channelCount, channelType, unit); |
171 | } |
172 | |