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/ kpc_demo.c
Last active
April 23, 2024 17:54
A demo shows how to read Intel or Apple M1 CPU performance counter in macOS.
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| // ============================================================================= | |
| // XNU kperf/kpc demo | |
| // Available for 64-bit Intel/Apple Silicon, macOS/iOS, with root privileges | |
| // | |
| // | |
| // Demo 1 (profile a function in current thread): | |
| // 1. Open directory '/usr/share/kpep/', find your CPU PMC database. | |
| // M1 (Pro/Max/Ultra): /usr/share/kpep/a14.plist | |
| // M2 (Pro/Max): /usr/share/kpep/a15.plist | |
| // M3: /usr/share/kpep/as1.plist |
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| #import <UIKit/UIKit.h> | |
| /** | |
| Show Screen FPS... | |
| The maximum fps in OSX/iOS Simulator is 60.00. | |
| The maximum fps on iPhone is 59.97. | |
| The maxmium fps on iPad is 60.0. | |
| */ | |
| @interface YYFPSLabel : UILabel |