BSD syscall#531
svc · unix #531
__mach_bridge_remote_time
Reads the Mach bridge clock that converts the host's mach_absolute_time into the time domain of a paired bridge co-processor (Touch Bar / T2 / Apple Silicon SEP).
Prototype
uint64_t __mach_bridge_remote_time(uint64_t local_timestamp);Returns: uint64_t
Arguments
| Name | Type | Dir | Description |
|---|---|---|---|
| local_timestamp | uint64_t | - |
Version history
| XNU tag | macOS | # |
|---|---|---|
| xnu-6153.11.26 | macOS 10.15 Catalina | 531 |
| xnu-7195.50.7.100.1 | macOS 11.0 Big Sur | 531 |
| xnu-8019.41.5 | macOS 12.0 Monterey | 531 |
| xnu-8792.41.9 | macOS 13.0 Ventura | 531 |
| xnu-10002.1.13 | macOS 14.0 Sonoma | 531 |
| xnu-11215.1.10 | macOS 15.0 Sequoia | 531 |
| xnu-11417.101.15 | macOS 15.4 Sequoia | 531 |
| xnu-12377.1.9 | macOS 26.0 Tahoe | 531 |
| xnu-10002.41.9 | — | 531 |
| xnu-10002.61.3 | — | 531 |
| xnu-10002.81.5 | — | 531 |
| xnu-10063.101.15 | — | 531 |
| xnu-10063.121.3 | — | 531 |
| xnu-10063.141.1 | — | 531 |
| xnu-11215.41.3 | — | 531 |
| xnu-11215.61.5 | — | 531 |
| xnu-11215.81.4 | — | 531 |
| xnu-11417.121.6 | — | 531 |
| xnu-11417.140.69 | — | 531 |
| xnu-12377.101.15 | — | 531 |
| xnu-12377.41.6 | — | 531 |
| xnu-12377.61.12 | — | 531 |
| xnu-12377.81.4 | — | 531 |
| xnu-4903.270.47 | — | 531 |
| xnu-6153.101.6 | — | 531 |
| xnu-6153.121.1 | — | 531 |
| xnu-6153.141.1 | — | 531 |
| xnu-6153.41.3 | — | 531 |
| xnu-6153.61.1 | — | 531 |
| xnu-6153.81.5 | — | 531 |
| xnu-7195.101.1 | — | 531 |
| xnu-7195.121.3 | — | 531 |
| xnu-7195.141.2 | — | 531 |
| xnu-7195.60.75 | — | 531 |
| xnu-7195.81.3 | — | 531 |
| xnu-8019.61.5 | — | 531 |
| xnu-8019.80.24 | — | 531 |
| xnu-8020.101.4 | — | 531 |
| xnu-8020.121.3 | — | 531 |
| xnu-8020.140.41 | — | 531 |
| xnu-8792.61.2 | — | 531 |
| xnu-8792.81.2 | — | 531 |
| xnu-8796.101.5 | — | 531 |
| xnu-8796.121.2 | — | 531 |
| xnu-8796.141.3 | — | 531 |
Notes
Apple-private. Returns a 64-bit timestamp expressed in the bridge processor's tick domain that callers can correlate with logs originating on the secondary chip. Used internally by CoreAnalytics, by the WindowServer for Touch Bar event timestamps, and by debugging tools comparing Mac and SEP traces.
Related APIs
mach_absolute_timemach_continuous_timeclock_gettimehost_get_clock_service