Nico Weber nico
nico
/ kpc_demo.c
Created
April 20, 2023 15:06
— forked from ibireme/kpc_demo.c
A demo shows how to read Intel or Apple M1 CPU performance counter in macOS.
This file contains bidirectional Unicode text that may be interpreted or compiled differently than what appears below. To review, open the file in an editor that reveals hidden Unicode characters.
Learn more about bidirectional Unicode characters
| // ============================================================================= | |
| // 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. | |
| // For M1 (Pro/Max), the database file is '/usr/share/kpep/a14.plist'. | |
| // 2. Select a few events that you are interested in, | |
| // add their names to the `profile_events` array below. |