[mirror_edk2.git] / MdePkg / Include / Library / PerformanceLib.h

/** @file\r
  Library that provides services to measure module execution performance\r
\r
  Copyright (c) 2006, Intel Corporation.\r
  All rights reserved. This program and the accompanying materials                          \r
  are licensed and made available under the terms and conditions of the BSD License         \r
  which accompanies this distribution.  The full text of the license may be found at        \r
  http://opensource.org/licenses/bsd-license.php                                            \r
\r
  THE PROGRAM IS DISTRIBUTED UNDER THE BSD LICENSE ON AN "AS IS" BASIS,                     \r
  WITHOUT WARRANTIES OR REPRESENTATIONS OF ANY KIND, EITHER EXPRESS OR IMPLIED.             \r
\r
  Module Name:  PerformanceLib.h\r
\r
**/\r
\r
#ifndef __PERFORMANCE_LIB_H__\r
#define __PERFORMANCE_LIB_H__\r
\r
//\r
// Performance library propery mask bits\r
//\r
#define PERFORMANCE_LIBRARY_PROPERTY_MEASUREMENT_ENABLED  0x00000001\r
\r
/**\r
  Creates a record for the beginning of a performance measurement. \r
  \r
  Creates a record that contains the Handle, Token, and Module.\r
  If TimeStamp is not zero, then TimeStamp is added to the record as the start time.\r
  If TimeStamp is zero, then this function reads the current time stamp\r
  and adds that time stamp value to the record as the start time.\r
\r
  @param  Handle                  Pointer to environment specific context used\r
                                  to identify the component being measured.\r
  @param  Token                   Pointer to a Null-terminated ASCII string\r
                                  that identifies the component being measured.\r
  @param  Module                  Pointer to a Null-terminated ASCII string\r
                                  that identifies the module being measured.\r
  @param  TimeStamp               64-bit time stamp.\r
\r
  @retval RETURN_SUCCESS          The start of the measurement was recorded.\r
  @retval RETURN_OUT_OF_RESOURCES There are not enough resources to record the measurement.\r
\r
**/\r
RETURN_STATUS\r
EFIAPI\r
StartPerformanceMeasurement (\r
  IN CONST VOID   *Handle,  OPTIONAL\r
  IN CONST CHAR8  *Token,   OPTIONAL\r
  IN CONST CHAR8  *Module,  OPTIONAL\r
  IN UINT64       TimeStamp\r
  );\r
\r
/**\r
  Fills in the end time of a performance measurement. \r
  \r
  Looks up the record that matches Handle, Token, and Module.\r
  If the record can not be found then return RETURN_NOT_FOUND.\r
  If the record is found and TimeStamp is not zero,\r
  then TimeStamp is added to the record as the end time.\r
  If the record is found and TimeStamp is zero, then this function reads\r
  the current time stamp and adds that time stamp value to the record as the end time.\r
  If this function is called multiple times for the same record, then the end time is overwritten.\r
\r
  @param  Handle                  Pointer to environment specific context used\r
                                  to identify the component being measured.\r
  @param  Token                   Pointer to a Null-terminated ASCII string\r
                                  that identifies the component being measured.\r
  @param  Module                  Pointer to a Null-terminated ASCII string\r
                                  that identifies the module being measured.\r
  @param  TimeStamp               64-bit time stamp.\r
\r
  @retval RETURN_SUCCESS          The end of  the measurement was recorded.\r
  @retval RETURN_NOT_FOUND        The specified measurement record could not be found.\r
\r
**/\r
RETURN_STATUS\r
EFIAPI\r
EndPerformanceMeasurement (\r
  IN CONST VOID   *Handle,  OPTIONAL\r
  IN CONST CHAR8  *Token,   OPTIONAL\r
  IN CONST CHAR8  *Module,  OPTIONAL\r
  IN UINT64       TimeStamp\r
  );\r
\r
/**\r
  Attempts to retrieve a performance measurement log entry from the performance measurement log. \r
  \r
  Attempts to retrieve the performance log entry specified by LogEntryKey.  If LogEntryKey is\r
  zero on entry, then an attempt is made to retrieve the first entry from the performance log,\r
  and the key for the second entry in the log is returned.  If the performance log is empty,\r
  then no entry is retrieved and zero is returned.  If LogEntryKey is not zero, then the performance\r
  log entry associated with LogEntryKey is retrieved, and the key for the next entry in the log is\r
  returned.  If LogEntryKey is the key for the last entry in the log, then the last log entry is\r
  retrieved and an implementation specific non-zero key value that specifies the end of the performance\r
  log is returned.  If LogEntryKey is equal this implementation specific non-zero key value, then no entry\r
  is retrieved and zero is returned.  In the cases where a performance log entry can be returned,\r
  the log entry is returned in Handle, Token, Module, StartTimeStamp, and EndTimeStamp.\r
  If LogEntryKey is not a valid log entry key for the performance measurement log, then ASSERT().\r
  If Handle is NULL, then ASSERT().\r
  If Token is NULL, then ASSERT().\r
  If Module is NULL, then ASSERT().\r
  If StartTimeStamp is NULL, then ASSERT().\r
  If EndTimeStamp is NULL, then ASSERT().\r
\r
  @param  LogEntryKey             On entry, the key of the performance measurement log entry to retrieve.\r
                                  0, then the first performance measurement log entry is retrieved.\r
                                  On exit, the key of the next performance lof entry entry.\r
  @param  Handle                  Pointer to environment specific context used to identify the component\r
                                  being measured.  \r
  @param  Token                   Pointer to a Null-terminated ASCII string that identifies the component\r
                                  being measured. \r
  @param  Module                  Pointer to a Null-terminated ASCII string that identifies the module\r
                                  being measured.\r
  @param  StartTimeStamp          Pointer to the 64-bit time stamp that was recorded when the measurement\r
                                  was started.\r
  @param  EndTimeStamp            Pointer to the 64-bit time stamp that was recorded when the measurement\r
                                  was ended.\r
\r
  @return The key for the next performance log entry (in general case).\r
\r
**/\r
UINTN\r
EFIAPI\r
GetPerformanceMeasurement (\r
  IN  UINTN       LogEntryKey, \r
  OUT CONST VOID  **Handle,\r
  OUT CONST CHAR8 **Token,\r
  OUT CONST CHAR8 **Module,\r
  OUT UINT64      *StartTimeStamp,\r
  OUT UINT64      *EndTimeStamp\r
  );\r
\r
/**\r
  Returns TRUE if the performance measurement macros are enabled. \r
  \r
  This function returns TRUE if the PERFORMANCE_LIBRARY_PROPERTY_MEASUREMENT_ENABLED bit of\r
  PcdPerformanceLibraryPropertyMask is set.  Otherwise FALSE is returned.\r
\r
  @retval TRUE                    The PERFORMANCE_LIBRARY_PROPERTY_MEASUREMENT_ENABLED bit of\r
                                  PcdPerformanceLibraryPropertyMask is set.\r
  @retval FALSE                   The PERFORMANCE_LIBRARY_PROPERTY_MEASUREMENT_ENABLED bit of\r
                                  PcdPerformanceLibraryPropertyMask is clear.\r
\r
**/\r
BOOLEAN\r
EFIAPI\r
PerformanceMeasurementEnabled (\r
  VOID\r
  );\r
\r
/**\r
  Macro that calls EndPerformanceMeasurement().\r
\r
  If the PERFORMANCE_LIBRARY_PROPERTY_MEASUREMENT_ENABLED bit of PcdPerformanceLibraryPropertyMask is set,\r
  then EndPerformanceMeasurement() is called.\r
\r
**/\r
#define PERF_END(Handle, Token, Module, TimeStamp)                    \\r
  do {                                                                \\r
    if (PerformanceMeasurementEnabled ()) {                           \\r
      EndPerformanceMeasurement (Handle, Token, Module, TimeStamp);   \\r
    }                                                                 \\r
  } while (FALSE)\r
\r
/**\r
  Macro that calls StartPerformanceMeasurement().\r
\r
  If the PERFORMANCE_LIBRARY_PROPERTY_MEASUREMENT_ENABLED bit of PcdPerformanceLibraryPropertyMask is set,\r
  then StartPerformanceMeasurement() is called.\r
\r
**/\r
#define PERF_START(Handle, Token, Module, TimeStamp)                  \\r
  do {                                                                \\r
    if (PerformanceMeasurementEnabled ()) {                           \\r
      StartPerformanceMeasurement (Handle, Token, Module, TimeStamp); \\r
    }                                                                 \\r
  } while (FALSE)\r
\r
/**\r
  Macro that marks the beginning of performance measurement source code.\r
\r
  If the PERFORMANCE_LIBRARY_PROPERTY_MEASUREMENT_ENABLED bit of PcdPerformanceLibraryPropertyMask is set,\r
  then this macro marks the beginning of source code that is included in a module.\r
  Otherwise, the source lines between PERF_CODE_BEGIN() and PERF_CODE_END() are not included in a module.\r
\r
**/\r
#define PERF_CODE_BEGIN()  do { if (PerformanceMeasurementEnabled ()) { UINT8  __PerformanceCodeLocal\r
\r
/**\r
  Macro that marks the end of performance measurement source code.\r
\r
  If the PERFORMANCE_LIBRARY_PROPERTY_MEASUREMENT_ENABLED bit of PcdPerformanceLibraryPropertyMask is set,\r
  then this macro marks the end of source code that is included in a module.\r
  Otherwise, the source lines between PERF_CODE_BEGIN() and PERF_CODE_END() are not included in a module.\r
\r
**/\r
#define PERF_CODE_END()    __PerformanceCodeLocal = 0; __PerformanceCodeLocal++; } } while (FALSE)\r
\r
/**\r
  Macro that declares a section of performance measurement source code.\r
\r
  If the PERFORMANCE_LIBRARY_PROPERTY_MEASUREMENT_ENABLED bit of PcdPerformanceLibraryPropertyMask is set,\r
  then the source code specified by Expression is included in a module.\r
  Otherwise, the source specified by Expression is not included in a module.\r
\r
  @param  Expression              Performance measurement source code to include in a module.\r
\r
**/\r
#define PERF_CODE(Expression)  \\r
  PERF_CODE_BEGIN ();          \\r
  Expression                   \\r
  PERF_CODE_END ()\r
\r
\r
#endif\r
Commit	Line	Data
fb3df220	1	/** @file\r
	2	Library that provides services to measure module execution performance\r
	3	\r
	4	Copyright (c) 2006, Intel Corporation.\r
	5	All rights reserved. This program and the accompanying materials \r
	6	are licensed and made available under the terms and conditions of the BSD License \r
	7	which accompanies this distribution. The full text of the license may be found at \r
	8	http://opensource.org/licenses/bsd-license.php \r
	9	\r
	10	THE PROGRAM IS DISTRIBUTED UNDER THE BSD LICENSE ON AN "AS IS" BASIS, \r
	11	WITHOUT WARRANTIES OR REPRESENTATIONS OF ANY KIND, EITHER EXPRESS OR IMPLIED. \r
	12	\r
	13	Module Name: PerformanceLib.h\r
	14	\r
	15	**/\r
	16	\r
	17	#ifndef __PERFORMANCE_LIB_H__\r
	18	#define __PERFORMANCE_LIB_H__\r
	19	\r
	20	//\r
	21	// Performance library propery mask bits\r
	22	//\r
	23	#define PERFORMANCE_LIBRARY_PROPERTY_MEASUREMENT_ENABLED 0x00000001\r
	24	\r
	25	/**\r
	26	Creates a record for the beginning of a performance measurement. \r
	27	\r
	28	Creates a record that contains the Handle, Token, and Module.\r
	29	If TimeStamp is not zero, then TimeStamp is added to the record as the start time.\r
	30	If TimeStamp is zero, then this function reads the current time stamp\r
	31	and adds that time stamp value to the record as the start time.\r
	32	\r
	33	@param Handle Pointer to environment specific context used\r
	34	to identify the component being measured.\r
	35	@param Token Pointer to a Null-terminated ASCII string\r
	36	that identifies the component being measured.\r
	37	@param Module Pointer to a Null-terminated ASCII string\r
	38	that identifies the module being measured.\r
	39	@param TimeStamp 64-bit time stamp.\r
	40	\r
	41	@retval RETURN_SUCCESS The start of the measurement was recorded.\r
	42	@retval RETURN_OUT_OF_RESOURCES There are not enough resources to record the measurement.\r
	43	\r
	44	**/\r
	45	RETURN_STATUS\r
	46	EFIAPI\r
	47	StartPerformanceMeasurement (\r
	48	IN CONST VOID *Handle, OPTIONAL\r
	49	IN CONST CHAR8 *Token, OPTIONAL\r
	50	IN CONST CHAR8 *Module, OPTIONAL\r
	51	IN UINT64 TimeStamp\r
	52	);\r
	53	\r
	54	/**\r
	55	Fills in the end time of a performance measurement. \r
	56	\r
	57	Looks up the record that matches Handle, Token, and Module.\r
	58	If the record can not be found then return RETURN_NOT_FOUND.\r
	59	If the record is found and TimeStamp is not zero,\r
	60	then TimeStamp is added to the record as the end time.\r
	61	If the record is found and TimeStamp is zero, then this function reads\r
	62	the current time stamp and adds that time stamp value to the record as the end time.\r
	63	If this function is called multiple times for the same record, then the end time is overwritten.\r
	64	\r
65	@param Handle Pointer to environment specific context used\r
66	to identify the component being measured.\r
67	@param Token Pointer to a Null-terminated ASCII string\r
68	that identifies the component being measured.\r
69	@param Module Pointer to a Null-terminated ASCII string\r
70	that identifies the module being measured.\r
71	@param TimeStamp 64-bit time stamp.\r
72	\r
73	@retval RETURN_SUCCESS The end of the measurement was recorded.\r
74	@retval RETURN_NOT_FOUND The specified measurement record could not be found.\r
75	\r
76	**/\r
77	RETURN_STATUS\r
78	EFIAPI\r
79	EndPerformanceMeasurement (\r
80	IN CONST VOID *Handle, OPTIONAL\r
81	IN CONST CHAR8 *Token, OPTIONAL\r
82	IN CONST CHAR8 *Module, OPTIONAL\r
83	IN UINT64 TimeStamp\r
84	);\r
85	\r
86	/**\r
87	Attempts to retrieve a performance measurement log entry from the performance measurement log. \r
88	\r
89	Attempts to retrieve the performance log entry specified by LogEntryKey. If LogEntryKey is\r
90	zero on entry, then an attempt is made to retrieve the first entry from the performance log,\r
91	and the key for the second entry in the log is returned. If the performance log is empty,\r
92	then no entry is retrieved and zero is returned. If LogEntryKey is not zero, then the performance\r
93	log entry associated with LogEntryKey is retrieved, and the key for the next entry in the log is\r
94	returned. If LogEntryKey is the key for the last entry in the log, then the last log entry is\r
95	retrieved and an implementation specific non-zero key value that specifies the end of the performance\r
96	log is returned. If LogEntryKey is equal this implementation specific non-zero key value, then no entry\r
97	is retrieved and zero is returned. In the cases where a performance log entry can be returned,\r
98	the log entry is returned in Handle, Token, Module, StartTimeStamp, and EndTimeStamp.\r
99	If LogEntryKey is not a valid log entry key for the performance measurement log, then ASSERT().\r
100	If Handle is NULL, then ASSERT().\r
101	If Token is NULL, then ASSERT().\r
102	If Module is NULL, then ASSERT().\r
103	If StartTimeStamp is NULL, then ASSERT().\r
104	If EndTimeStamp is NULL, then ASSERT().\r
105	\r
106	@param LogEntryKey On entry, the key of the performance measurement log entry to retrieve.\r
107	0, then the first performance measurement log entry is retrieved.\r
108	On exit, the key of the next performance lof entry entry.\r
109	@param Handle Pointer to environment specific context used to identify the component\r
110	being measured. \r
111	@param Token Pointer to a Null-terminated ASCII string that identifies the component\r
112	being measured. \r
113	@param Module Pointer to a Null-terminated ASCII string that identifies the module\r
114	being measured.\r
115	@param StartTimeStamp Pointer to the 64-bit time stamp that was recorded when the measurement\r
116	was started.\r
117	@param EndTimeStamp Pointer to the 64-bit time stamp that was recorded when the measurement\r
118	was ended.\r
119	\r
120	@return The key for the next performance log entry (in general case).\r
121	\r
122	**/\r
123	UINTN\r
124	EFIAPI\r
125	GetPerformanceMeasurement (\r
126	IN UINTN LogEntryKey, \r
127	OUT CONST VOID **Handle,\r
128	OUT CONST CHAR8 **Token,\r
129	OUT CONST CHAR8 **Module,\r
130	OUT UINT64 *StartTimeStamp,\r
131	OUT UINT64 *EndTimeStamp\r
132	);\r
133	\r
134	/**\r
135	Returns TRUE if the performance measurement macros are enabled. \r
136	\r
137	This function returns TRUE if the PERFORMANCE_LIBRARY_PROPERTY_MEASUREMENT_ENABLED bit of\r
138	PcdPerformanceLibraryPropertyMask is set. Otherwise FALSE is returned.\r
139	\r
140	@retval TRUE The PERFORMANCE_LIBRARY_PROPERTY_MEASUREMENT_ENABLED bit of\r
141	PcdPerformanceLibraryPropertyMask is set.\r
142	@retval FALSE The PERFORMANCE_LIBRARY_PROPERTY_MEASUREMENT_ENABLED bit of\r
143	PcdPerformanceLibraryPropertyMask is clear.\r
144	\r
145	**/\r
146	BOOLEAN\r
147	EFIAPI\r
148	PerformanceMeasurementEnabled (\r
149	VOID\r
150	);\r
151	\r
152	/**\r
153	Macro that calls EndPerformanceMeasurement().\r
154	\r
155	If the PERFORMANCE_LIBRARY_PROPERTY_MEASUREMENT_ENABLED bit of PcdPerformanceLibraryPropertyMask is set,\r
156	then EndPerformanceMeasurement() is called.\r
157	\r
158	**/\r
159	#define PERF_END(Handle, Token, Module, TimeStamp) \\r
160	do { \\r
161	if (PerformanceMeasurementEnabled ()) { \\r
162	EndPerformanceMeasurement (Handle, Token, Module, TimeStamp); \\r
163	} \\r
164	} while (FALSE)\r
165	\r
166	/**\r
167	Macro that calls StartPerformanceMeasurement().\r
168	\r
169	If the PERFORMANCE_LIBRARY_PROPERTY_MEASUREMENT_ENABLED bit of PcdPerformanceLibraryPropertyMask is set,\r
170	then StartPerformanceMeasurement() is called.\r
171	\r
172	**/\r
173	#define PERF_START(Handle, Token, Module, TimeStamp) \\r
174	do { \\r
175	if (PerformanceMeasurementEnabled ()) { \\r
176	StartPerformanceMeasurement (Handle, Token, Module, TimeStamp); \\r
177	} \\r
178	} while (FALSE)\r
179	\r
180	/**\r
181	Macro that marks the beginning of performance measurement source code.\r
182	\r
183	If the PERFORMANCE_LIBRARY_PROPERTY_MEASUREMENT_ENABLED bit of PcdPerformanceLibraryPropertyMask is set,\r
184	then this macro marks the beginning of source code that is included in a module.\r
185	Otherwise, the source lines between PERF_CODE_BEGIN() and PERF_CODE_END() are not included in a module.\r
186	\r
187	**/\r
188	#define PERF_CODE_BEGIN() do { if (PerformanceMeasurementEnabled ()) { UINT8 __PerformanceCodeLocal\r
189	\r
190	/**\r
191	Macro that marks the end of performance measurement source code.\r
192	\r
193	If the PERFORMANCE_LIBRARY_PROPERTY_MEASUREMENT_ENABLED bit of PcdPerformanceLibraryPropertyMask is set,\r
194	then this macro marks the end of source code that is included in a module.\r
195	Otherwise, the source lines between PERF_CODE_BEGIN() and PERF_CODE_END() are not included in a module.\r
196	\r
197	**/\r
198	#define PERF_CODE_END() __PerformanceCodeLocal = 0; __PerformanceCodeLocal++; } } while (FALSE)\r
199	\r
200	/**\r
201	Macro that declares a section of performance measurement source code.\r
202	\r
203	If the PERFORMANCE_LIBRARY_PROPERTY_MEASUREMENT_ENABLED bit of PcdPerformanceLibraryPropertyMask is set,\r
204	then the source code specified by Expression is included in a module.\r
205	Otherwise, the source specified by Expression is not included in a module.\r
206	\r
207	@param Expression Performance measurement source code to include in a module.\r
208	\r
209	**/\r
210	#define PERF_CODE(Expression) \\r
211	PERF_CODE_BEGIN (); \\r
212	Expression \\r
213	PERF_CODE_END ()\r
214	\r
215	\r
216	#endif\r