diff options
Diffstat (limited to 'absl/synchronization/mutex.h')
| -rw-r--r-- | absl/synchronization/mutex.h | 7 |
1 files changed, 4 insertions, 3 deletions
diff --git a/absl/synchronization/mutex.h b/absl/synchronization/mutex.h index 38338f24..9a3e438f 100644 --- a/absl/synchronization/mutex.h +++ b/absl/synchronization/mutex.h @@ -984,14 +984,15 @@ inline Condition::Condition(const T *object, // Register a hook for profiling support. // // The function pointer registered here will be called whenever a mutex is -// contended. The callback is given the absl/base/cycleclock.h timestamp when -// waiting began. +// contended. The callback is given the cycles for which waiting happened (as +// measured by //absl/base/internal/cycleclock.h, and which may not +// be real "cycle" counts.) // // Calls to this function do not race or block, but there is no ordering // guaranteed between calls to this function and call to the provided hook. // In particular, the previously registered hook may still be called for some // time after this function returns. -void RegisterMutexProfiler(void (*fn)(int64_t wait_timestamp)); +void RegisterMutexProfiler(void (*fn)(int64_t wait_cycles)); // Register a hook for Mutex tracing. // |