RegexKit Code

#import "NSDate.h"

int dummyDateFunction(int dummyInt) {
  return(dummyInt);
}

@implementation NSDate (CPUTime)

+ (RKCPUTime) cpuTimeUsed
{
  struct rusage currentRusage;
  RKCPUTime timeUsed; memset(&timeUsed, 0, sizeof(RKCPUTime));
  
  getrusage(RUSAGE_SELF, &currentRusage);
  timeUsed.userCPUTime   = ((((NSHighResTimeInterval)currentRusage.ru_utime.tv_sec) * 1000000.0) + ((NSHighResTimeInterval)currentRusage.ru_utime.tv_usec));// / 1000000.0;
  timeUsed.systemCPUTime = ((((NSHighResTimeInterval)currentRusage.ru_stime.tv_sec) * 1000000.0) + ((NSHighResTimeInterval)currentRusage.ru_stime.tv_usec));// / 1000000.0;
  timeUsed.CPUTime = timeUsed.userCPUTime + timeUsed.systemCPUTime;

#ifdef __MACOSX_RUNTIME__
  malloc_zone_statistics(malloc_default_zone(), &timeUsed.zoneStats);
  timeUsed.mach_time = mach_absolute_time();
#endif //__MACOSX_RUNTIME__
  
  return(timeUsed);
}

+ (RKCPUTime) differenceOfStartingTime:(RKCPUTime)startingTime endingTime:(RKCPUTime)endingTime
{
  RKCPUTime diffTime; memset(&diffTime, 0, sizeof(RKCPUTime));
  
  diffTime.userCPUTime   = (endingTime.userCPUTime   - startingTime.userCPUTime);
  diffTime.systemCPUTime = (endingTime.systemCPUTime - startingTime.systemCPUTime);
  diffTime.CPUTime       = (endingTime.CPUTime       - startingTime.CPUTime);

#ifdef __MACOSX_RUNTIME__
  diffTime.zoneStats.blocks_in_use   = endingTime.zoneStats.blocks_in_use   - startingTime.zoneStats.blocks_in_use;
  diffTime.zoneStats.size_in_use     = endingTime.zoneStats.size_in_use     - startingTime.zoneStats.size_in_use;
  diffTime.zoneStats.max_size_in_use = endingTime.zoneStats.max_size_in_use - startingTime.zoneStats.max_size_in_use;
  diffTime.zoneStats.size_allocated  = endingTime.zoneStats.size_allocated  - startingTime.zoneStats.size_allocated;

  diffTime.mach_time       = (endingTime.mach_time       - startingTime.mach_time);
  Nanoseconds elapsed_nanoSeconds = AbsoluteToNanoseconds( *(AbsoluteTime *) &diffTime.mach_time );
  diffTime.nanoSeconds = * (uint64_t *) &elapsed_nanoSeconds;
#endif //__MACOSX_RUNTIME__

  return(diffTime);
}

+ (NSString *)stringFromCPUTime:(RKCPUTime)CPUTime
{
  return([NSString stringWithFormat:@"<U %f %6.2f%% S %f %6.2f%% U+S %f>", CPUTime.userCPUTime / 1000000.0, (CPUTime.userCPUTime / CPUTime.CPUTime) * 100.0, CPUTime.systemCPUTime / 1000000.0, (CPUTime.systemCPUTime / CPUTime.CPUTime) * 100.0, CPUTime.CPUTime / 1000000.0]); 
}

+ (NSString *)microSecondsStringFromCPUTime:(RKCPUTime)CPUTime
{
  return([NSString stringWithFormat:@"<U %.1fus %6.2f%% S %.1fus %6.2f%% U+S %.1fus>", CPUTime.userCPUTime, (CPUTime.userCPUTime / CPUTime.CPUTime) * 100.0, CPUTime.systemCPUTime, (CPUTime.systemCPUTime / CPUTime.CPUTime) * 100.0, CPUTime.CPUTime]); 
}

#ifdef __MACOSX_RUNTIME__
+ (NSString *)machtimeStringFromCPUTime:(RKCPUTime)CPUTime
{
  return([NSString stringWithFormat:@"<< %llu / %llu >>", CPUTime.mach_time, CPUTime.nanoSeconds]);
}

+ (NSString *)stringFromCPUTimeMemory:(RKCPUTime)CPUTime
{
  char membuf[4096];
  snprintf(&membuf[0], 4090, "<blocks: %10u in use: %10zu max in use: %10zu heap: %10zu>", CPUTime.zoneStats.blocks_in_use, CPUTime.zoneStats.size_in_use, CPUTime.zoneStats.max_size_in_use, CPUTime.zoneStats.size_allocated);

  return([NSString stringWithFormat:@"%s", &membuf[0]]);
}
#else
#warning "Mac OSX runtime not defined"
#endif //__MACOSX_RUNTIME__

@end