mirror of
https://github.com/zhigang1992/GVUserDefaults.git
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77 lines
2.2 KiB
Objective-C
77 lines
2.2 KiB
Objective-C
//
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// CodeTimestamps.h
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//
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// Created by Tyler Neylon on 12/29/10.
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//
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// Functions to assist in debugging.
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//
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// Sample usage, for timing within a single function/method:
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//
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// - (void)myMethod {
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// LogTimestampStartChunk;
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// /* do stuff */
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// LogTimestampMidChunk;
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// /* do stuff */
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// LogTimestampMidChunk;
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// /* do stuff */
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// LogTimestampEndChunk;
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// }
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//
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// For simpler time measurements between any two code points,
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// just use LogTimestamp; for example:
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//
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// - (void)myMethod {
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// LogTimestamp;
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// /* do stuff */
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// LogTimestamp;
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// }
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//
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// All these macros measure time intervals down to the nanosecond,
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// and the chunk methods provide aggregated feedback. It can be very
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// useful to use the chunk methods in several methods at once, to help
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// understand which is eating the most time, and why.
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//
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#import <Foundation/Foundation.h>
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// Comment out this line to disable timestamp logging.
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#define USE_TIMESTAMPS 1
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// How often timing data is output to the logs.
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#define kLogTimeInterval 10.0
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// Macro to give us an efficient one-time function call.
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// The token trickiness is from here:
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// http://bit.ly/fQ6Glh
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#define TokenPasteInternal(x,y) x ## y
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#define TokenPaste(x,y) TokenPasteInternal(x,y)
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#define UniqueTokenMacro TokenPaste(unique,__LINE__)
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#define OneTimeCall(x) \
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{ static BOOL UniqueTokenMacro = NO; \
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if (!UniqueTokenMacro) {x; UniqueTokenMacro = YES; }}
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// Speed performance-tuning functions & macros.
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void LogTimeStampInMethod(const char *fnName, int lineNum);
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void LogTimestampChunkInMethod(const char *fnName, int lineNum, BOOL isStart, BOOL isEnd);
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void printAllLogs();
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#ifdef USE_TIMESTAMPS
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#define LogTimestamp LogTimeStampInMethod(__FUNCTION__, __LINE__)
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#define LogTimestampStartChunk LogTimestampChunkInMethod(__FUNCTION__, __LINE__, YES, NO)
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#define LogTimestampMidChunk LogTimestampChunkInMethod(__FUNCTION__, __LINE__, NO, NO)
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#define LogTimestampEndChunk LogTimestampChunkInMethod(__FUNCTION__, __LINE__, NO, YES)
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#else
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#define LogTimestamp
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#define LogTimestampStartChunk
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#define LogTimestampMidChunk
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#define LogTimestampEndChunk
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#endif
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#ifndef PrintName
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#define PrintName NSLog(@"%s", __FUNCTION__)
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#endif
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