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Diffstat (limited to 'OldMdePkg/Include/Library/PerformanceLib.h')
| -rw-r--r-- | OldMdePkg/Include/Library/PerformanceLib.h | 216 |
1 files changed, 216 insertions, 0 deletions
diff --git a/OldMdePkg/Include/Library/PerformanceLib.h b/OldMdePkg/Include/Library/PerformanceLib.h new file mode 100644 index 0000000000..06de00d8d8 --- /dev/null +++ b/OldMdePkg/Include/Library/PerformanceLib.h @@ -0,0 +1,216 @@ +/** @file
+ Library that provides services to measure module execution performance
+
+ Copyright (c) 2006, Intel Corporation.
+ All rights reserved. This program and the accompanying materials
+ are licensed and made available under the terms and conditions of the BSD License
+ which accompanies this distribution. The full text of the license may be found at
+ http://opensource.org/licenses/bsd-license.php
+
+ THE PROGRAM IS DISTRIBUTED UNDER THE BSD LICENSE ON AN "AS IS" BASIS,
+ WITHOUT WARRANTIES OR REPRESENTATIONS OF ANY KIND, EITHER EXPRESS OR IMPLIED.
+
+ Module Name: PerformanceLib.h
+
+**/
+
+#ifndef __PERFORMANCE_LIB_H__
+#define __PERFORMANCE_LIB_H__
+
+//
+// Performance library propery mask bits
+//
+#define PERFORMANCE_LIBRARY_PROPERTY_MEASUREMENT_ENABLED 0x00000001
+
+/**
+ Creates a record for the beginning of a performance measurement.
+
+ Creates a record that contains the Handle, Token, and Module.
+ If TimeStamp is not zero, then TimeStamp is added to the record as the start time.
+ If TimeStamp is zero, then this function reads the current time stamp
+ and adds that time stamp value to the record as the start time.
+
+ @param Handle Pointer to environment specific context used
+ to identify the component being measured.
+ @param Token Pointer to a Null-terminated ASCII string
+ that identifies the component being measured.
+ @param Module Pointer to a Null-terminated ASCII string
+ that identifies the module being measured.
+ @param TimeStamp 64-bit time stamp.
+
+ @retval RETURN_SUCCESS The start of the measurement was recorded.
+ @retval RETURN_OUT_OF_RESOURCES There are not enough resources to record the measurement.
+
+**/
+RETURN_STATUS
+EFIAPI
+StartPerformanceMeasurement (
+ IN CONST VOID *Handle, OPTIONAL
+ IN CONST CHAR8 *Token, OPTIONAL
+ IN CONST CHAR8 *Module, OPTIONAL
+ IN UINT64 TimeStamp
+ );
+
+/**
+ Fills in the end time of a performance measurement.
+
+ Looks up the record that matches Handle, Token, and Module.
+ If the record can not be found then return RETURN_NOT_FOUND.
+ If the record is found and TimeStamp is not zero,
+ then TimeStamp is added to the record as the end time.
+ If the record is found and TimeStamp is zero, then this function reads
+ the current time stamp and adds that time stamp value to the record as the end time.
+ If this function is called multiple times for the same record, then the end time is overwritten.
+
+ @param Handle Pointer to environment specific context used
+ to identify the component being measured.
+ @param Token Pointer to a Null-terminated ASCII string
+ that identifies the component being measured.
+ @param Module Pointer to a Null-terminated ASCII string
+ that identifies the module being measured.
+ @param TimeStamp 64-bit time stamp.
+
+ @retval RETURN_SUCCESS The end of the measurement was recorded.
+ @retval RETURN_NOT_FOUND The specified measurement record could not be found.
+
+**/
+RETURN_STATUS
+EFIAPI
+EndPerformanceMeasurement (
+ IN CONST VOID *Handle, OPTIONAL
+ IN CONST CHAR8 *Token, OPTIONAL
+ IN CONST CHAR8 *Module, OPTIONAL
+ IN UINT64 TimeStamp
+ );
+
+/**
+ Attempts to retrieve a performance measurement log entry from the performance measurement log.
+
+ Attempts to retrieve the performance log entry specified by LogEntryKey. If LogEntryKey is
+ zero on entry, then an attempt is made to retrieve the first entry from the performance log,
+ and the key for the second entry in the log is returned. If the performance log is empty,
+ then no entry is retrieved and zero is returned. If LogEntryKey is not zero, then the performance
+ log entry associated with LogEntryKey is retrieved, and the key for the next entry in the log is
+ returned. If LogEntryKey is the key for the last entry in the log, then the last log entry is
+ retrieved and an implementation specific non-zero key value that specifies the end of the performance
+ log is returned. If LogEntryKey is equal this implementation specific non-zero key value, then no entry
+ is retrieved and zero is returned. In the cases where a performance log entry can be returned,
+ the log entry is returned in Handle, Token, Module, StartTimeStamp, and EndTimeStamp.
+ If LogEntryKey is not a valid log entry key for the performance measurement log, then ASSERT().
+ If Handle is NULL, then ASSERT().
+ If Token is NULL, then ASSERT().
+ If Module is NULL, then ASSERT().
+ If StartTimeStamp is NULL, then ASSERT().
+ If EndTimeStamp is NULL, then ASSERT().
+
+ @param LogEntryKey On entry, the key of the performance measurement log entry to retrieve.
+ 0, then the first performance measurement log entry is retrieved.
+ On exit, the key of the next performance lof entry entry.
+ @param Handle Pointer to environment specific context used to identify the component
+ being measured.
+ @param Token Pointer to a Null-terminated ASCII string that identifies the component
+ being measured.
+ @param Module Pointer to a Null-terminated ASCII string that identifies the module
+ being measured.
+ @param StartTimeStamp Pointer to the 64-bit time stamp that was recorded when the measurement
+ was started.
+ @param EndTimeStamp Pointer to the 64-bit time stamp that was recorded when the measurement
+ was ended.
+
+ @return The key for the next performance log entry (in general case).
+
+**/
+UINTN
+EFIAPI
+GetPerformanceMeasurement (
+ IN UINTN LogEntryKey,
+ OUT CONST VOID **Handle,
+ OUT CONST CHAR8 **Token,
+ OUT CONST CHAR8 **Module,
+ OUT UINT64 *StartTimeStamp,
+ OUT UINT64 *EndTimeStamp
+ );
+
+/**
+ Returns TRUE if the performance measurement macros are enabled.
+
+ This function returns TRUE if the PERFORMANCE_LIBRARY_PROPERTY_MEASUREMENT_ENABLED bit of
+ PcdPerformanceLibraryPropertyMask is set. Otherwise FALSE is returned.
+
+ @retval TRUE The PERFORMANCE_LIBRARY_PROPERTY_MEASUREMENT_ENABLED bit of
+ PcdPerformanceLibraryPropertyMask is set.
+ @retval FALSE The PERFORMANCE_LIBRARY_PROPERTY_MEASUREMENT_ENABLED bit of
+ PcdPerformanceLibraryPropertyMask is clear.
+
+**/
+BOOLEAN
+EFIAPI
+PerformanceMeasurementEnabled (
+ VOID
+ );
+
+/**
+ Macro that calls EndPerformanceMeasurement().
+
+ If the PERFORMANCE_LIBRARY_PROPERTY_MEASUREMENT_ENABLED bit of PcdPerformanceLibraryPropertyMask is set,
+ then EndPerformanceMeasurement() is called.
+
+**/
+#define PERF_END(Handle, Token, Module, TimeStamp) \
+ do { \
+ if (PerformanceMeasurementEnabled ()) { \
+ EndPerformanceMeasurement (Handle, Token, Module, TimeStamp); \
+ } \
+ } while (FALSE)
+
+/**
+ Macro that calls StartPerformanceMeasurement().
+
+ If the PERFORMANCE_LIBRARY_PROPERTY_MEASUREMENT_ENABLED bit of PcdPerformanceLibraryPropertyMask is set,
+ then StartPerformanceMeasurement() is called.
+
+**/
+#define PERF_START(Handle, Token, Module, TimeStamp) \
+ do { \
+ if (PerformanceMeasurementEnabled ()) { \
+ StartPerformanceMeasurement (Handle, Token, Module, TimeStamp); \
+ } \
+ } while (FALSE)
+
+/**
+ Macro that marks the beginning of performance measurement source code.
+
+ If the PERFORMANCE_LIBRARY_PROPERTY_MEASUREMENT_ENABLED bit of PcdPerformanceLibraryPropertyMask is set,
+ then this macro marks the beginning of source code that is included in a module.
+ Otherwise, the source lines between PERF_CODE_BEGIN() and PERF_CODE_END() are not included in a module.
+
+**/
+#define PERF_CODE_BEGIN() do { if (PerformanceMeasurementEnabled ()) { UINT8 __PerformanceCodeLocal
+
+/**
+ Macro that marks the end of performance measurement source code.
+
+ If the PERFORMANCE_LIBRARY_PROPERTY_MEASUREMENT_ENABLED bit of PcdPerformanceLibraryPropertyMask is set,
+ then this macro marks the end of source code that is included in a module.
+ Otherwise, the source lines between PERF_CODE_BEGIN() and PERF_CODE_END() are not included in a module.
+
+**/
+#define PERF_CODE_END() __PerformanceCodeLocal = 0; __PerformanceCodeLocal++; } } while (FALSE)
+
+/**
+ Macro that declares a section of performance measurement source code.
+
+ If the PERFORMANCE_LIBRARY_PROPERTY_MEASUREMENT_ENABLED bit of PcdPerformanceLibraryPropertyMask is set,
+ then the source code specified by Expression is included in a module.
+ Otherwise, the source specified by Expression is not included in a module.
+
+ @param Expression Performance measurement source code to include in a module.
+
+**/
+#define PERF_CODE(Expression) \
+ PERF_CODE_BEGIN (); \
+ Expression \
+ PERF_CODE_END ()
+
+
+#endif
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