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1 | /*++\r | |
2 | \r | |
3 | Copyright (c) 2006, Intel Corporation \r | |
4 | All rights reserved. This program and the accompanying materials \r | |
5 | are licensed and made available under the terms and conditions of the BSD License \r | |
6 | which accompanies this distribution. The full text of the license may be found at \r | |
7 | http://opensource.org/licenses/bsd-license.php \r | |
8 | \r | |
9 | THE PROGRAM IS DISTRIBUTED UNDER THE BSD LICENSE ON AN "AS IS" BASIS, \r | |
10 | WITHOUT WARRANTIES OR REPRESENTATIONS OF ANY KIND, EITHER EXPRESS OR IMPLIED. \r | |
11 | \r | |
12 | Module Name:\r | |
13 | \r | |
14 | DxePerformanceLib.c\r | |
15 | \r | |
16 | Abstract:\r | |
17 | \r | |
18 | Performance Library\r | |
19 | \r | |
20 | --*/\r | |
21 | \r | |
22 | STATIC PERFORMANCE_PROTOCOL *mPerformance = NULL;\r | |
23 | \r | |
24 | /**\r | |
25 | The constructor function caches the pointer to Performance protocol.\r | |
26 | \r | |
27 | The constructor function locates Performance protocol from protocol database.\r | |
28 | It will ASSERT() if that operation fails and it will always return EFI_SUCCESS. \r | |
29 | \r | |
30 | @param ImageHandle The firmware allocated handle for the EFI image.\r | |
31 | @param SystemTable A pointer to the EFI System Table.\r | |
32 | \r | |
33 | @retval EFI_SUCCESS The constructor always returns EFI_SUCCESS.\r | |
34 | \r | |
35 | **/\r | |
36 | EFI_STATUS\r | |
37 | EFIAPI\r | |
38 | PerformanceLibConstructor (\r | |
39 | IN EFI_HANDLE ImageHandle,\r | |
40 | IN EFI_SYSTEM_TABLE *SystemTable\r | |
41 | )\r | |
42 | {\r | |
43 | EFI_STATUS Status;\r | |
44 | \r | |
45 | Status = gBS->LocateProtocol (&gPerformanceProtocolGuid, NULL, (VOID **) &mPerformance);\r | |
46 | ASSERT_EFI_ERROR (Status);\r | |
47 | ASSERT (mPerformance != NULL);\r | |
48 | \r | |
49 | return Status;\r | |
50 | }\r | |
51 | \r | |
52 | /**\r | |
53 | Creates a record for the beginning of a performance measurement. \r | |
54 | \r | |
55 | Creates a record that contains the Handle, Token, and Module.\r | |
56 | If TimeStamp is not zero, then TimeStamp is added to the record as the start time.\r | |
57 | If TimeStamp is zero, then this function reads the current time stamp\r | |
58 | and adds that time stamp value to the record as the start time.\r | |
59 | \r | |
60 | @param Handle Pointer to environment specific context used\r | |
61 | to identify the component being measured.\r | |
62 | @param Token Pointer to a Null-terminated ASCII string\r | |
63 | that identifies the component being measured.\r | |
64 | @param Module Pointer to a Null-terminated ASCII string\r | |
65 | that identifies the module being measured.\r | |
66 | @param TimeStamp 64-bit time stamp.\r | |
67 | \r | |
68 | @retval RETURN_SUCCESS The start of the measurement was recorded.\r | |
69 | @retval RETURN_OUT_OF_RESOURCES There are not enough resources to record the measurement.\r | |
70 | \r | |
71 | **/\r | |
72 | RETURN_STATUS\r | |
73 | EFIAPI\r | |
74 | StartPerformanceMeasurement (\r | |
75 | IN CONST VOID *Handle, OPTIONAL\r | |
76 | IN CONST CHAR8 *Token, OPTIONAL\r | |
77 | IN CONST CHAR8 *Module, OPTIONAL\r | |
78 | IN UINT64 TimeStamp\r | |
79 | )\r | |
80 | {\r | |
81 | EFI_STATUS Status;\r | |
82 | \r | |
83 | Status = mPerformance->StartGauge (Handle, Token, Module, TimeStamp);\r | |
84 | \r | |
85 | return (RETURN_STATUS) Status;\r | |
86 | }\r | |
87 | \r | |
88 | /**\r | |
89 | Fills in the end time of a performance measurement. \r | |
90 | \r | |
91 | Looks up the record that matches Handle, Token, and Module.\r | |
92 | If the record can not be found then return RETURN_NOT_FOUND.\r | |
93 | If the record is found and TimeStamp is not zero,\r | |
94 | then TimeStamp is added to the record as the end time.\r | |
95 | If the record is found and TimeStamp is zero, then this function reads\r | |
96 | the current time stamp and adds that time stamp value to the record as the end time.\r | |
97 | If this function is called multiple times for the same record, then the end time is overwritten.\r | |
98 | \r | |
99 | @param Handle Pointer to environment specific context used\r | |
100 | to identify the component being measured.\r | |
101 | @param Token Pointer to a Null-terminated ASCII string\r | |
102 | that identifies the component being measured.\r | |
103 | @param Module Pointer to a Null-terminated ASCII string\r | |
104 | that identifies the module being measured.\r | |
105 | @param TimeStamp 64-bit time stamp.\r | |
106 | \r | |
107 | @retval RETURN_SUCCESS The end of the measurement was recorded.\r | |
108 | @retval RETURN_NOT_FOUND The specified measurement record could not be found.\r | |
109 | \r | |
110 | **/\r | |
111 | RETURN_STATUS\r | |
112 | EFIAPI\r | |
113 | EndPerformanceMeasurement (\r | |
114 | IN CONST VOID *Handle, OPTIONAL\r | |
115 | IN CONST CHAR8 *Token, OPTIONAL\r | |
116 | IN CONST CHAR8 *Module, OPTIONAL\r | |
117 | IN UINT64 TimeStamp\r | |
118 | )\r | |
119 | {\r | |
120 | EFI_STATUS Status;\r | |
121 | \r | |
122 | Status = mPerformance->EndGauge (Handle, Token, Module, TimeStamp);\r | |
123 | \r | |
124 | return (RETURN_STATUS) Status;\r | |
125 | }\r | |
126 | \r | |
127 | /**\r | |
128 | Retrieves a previously logged performance measurement. \r | |
129 | \r | |
130 | Looks up the record that matches Handle, Token, and Module.\r | |
131 | If the record can not be found then return RETURN_NOT_FOUND.\r | |
132 | If the record is found then the start of the measurement is returned in StartTimeStamp,\r | |
133 | and the end of the measurement is returned in EndTimeStamp.\r | |
134 | \r | |
135 | @param LogEntryKey The key for the previous performance measurement log entry.\r | |
136 | If 0, then the first performance measurement log entry is retrieved.\r | |
137 | @param Handle Pointer to environment specific context used\r | |
138 | to identify the component being measured.\r | |
139 | @param Token Pointer to a Null-terminated ASCII string\r | |
140 | that identifies the component being measured.\r | |
141 | @param Module Pointer to a Null-terminated ASCII string\r | |
142 | that identifies the module being measured.\r | |
143 | @param StartTimeStamp The 64-bit time stamp that was recorded when the measurement was started.\r | |
144 | @param EndTimeStamp The 64-bit time stamp that was recorded when the measurement was ended.\r | |
145 | \r | |
146 | @return The key for the current performance log entry.\r | |
147 | \r | |
148 | **/\r | |
149 | UINTN\r | |
150 | EFIAPI\r | |
151 | GetPerformanceMeasurement (\r | |
152 | UINTN LogEntryKey, \r | |
153 | OUT CONST VOID **Handle,\r | |
154 | OUT CONST CHAR8 **Token,\r | |
155 | OUT CONST CHAR8 **Module,\r | |
156 | OUT UINT64 *StartTimeStamp,\r | |
157 | OUT UINT64 *EndTimeStamp\r | |
158 | )\r | |
159 | {\r | |
160 | EFI_STATUS Status;\r | |
161 | GAUGE_DATA_ENTRY *GaugeData;\r | |
162 | \r | |
163 | ASSERT (Handle != NULL);\r | |
164 | ASSERT (Token != NULL);\r | |
165 | ASSERT (Module != NULL);\r | |
166 | ASSERT (StartTimeStamp != NULL);\r | |
167 | ASSERT (EndTimeStamp != NULL);\r | |
168 | \r | |
169 | Status = mPerformance->GetGauge (LogEntryKey++, &GaugeData);\r | |
170 | \r | |
171 | //\r | |
172 | // Make sure that LogEntryKey is a valid log entry key,\r | |
173 | //\r | |
174 | ASSERT (Status != EFI_INVALID_PARAMETER);\r | |
175 | \r | |
176 | if (EFI_ERROR (Status)) {\r | |
177 | //\r | |
178 | // The LogEntryKey is the last entry (equals to the total entry number).\r | |
179 | //\r | |
180 | return 0;\r | |
181 | }\r | |
182 | \r | |
183 | ASSERT (GaugeData != NULL);\r | |
184 | \r | |
185 | *Handle = (VOID *) (UINTN) GaugeData->Handle;\r | |
186 | *Token = GaugeData->Token;\r | |
187 | *Module = GaugeData->Module;\r | |
188 | *StartTimeStamp = GaugeData->StartTimeStamp;\r | |
189 | *EndTimeStamp = GaugeData->EndTimeStamp;\r | |
190 | \r | |
191 | return LogEntryKey; \r | |
192 | }\r | |
193 | \r | |
194 | /**\r | |
195 | Returns TRUE if the performance measurement macros are enabled. \r | |
196 | \r | |
197 | This function returns TRUE if the PERFORMANCE_LIBRARY_PROPERTY_MEASUREMENT_ENABLED bit of\r | |
198 | PcdPerformanceLibraryPropertyMask is set. Otherwise FALSE is returned.\r | |
199 | \r | |
200 | @retval TRUE The PERFORMANCE_LIBRARY_PROPERTY_MEASUREMENT_ENABLED bit of\r | |
201 | PcdPerformanceLibraryPropertyMask is set.\r | |
202 | @retval FALSE The PERFORMANCE_LIBRARY_PROPERTY_MEASUREMENT_ENABLED bit of\r | |
203 | PcdPerformanceLibraryPropertyMask is clear.\r | |
204 | \r | |
205 | **/\r | |
206 | BOOLEAN\r | |
207 | EFIAPI\r | |
208 | PerformanceMeasurementEnabled (\r | |
209 | VOID\r | |
210 | )\r | |
211 | {\r | |
212 | return ((PcdGet8(PcdPerformanceLibraryPropertyMask) & PERFORMANCE_LIBRARY_PROPERTY_MEASUREMENT_ENABLED) != 0);\r | |
213 | }\r |