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| author | Abseil Team <absl-team@google.com> | 2019-02-25T19·52-0800 |
|---|---|---|
| committer | Jon Cohen <cohenjon@google.com> | 2019-02-25T20·03-0500 |
| commit | 308ce31528a7edfa39f5f6d36142278a0ae1bf45 (patch) | |
| tree | 403fb7710f1ffecbc2851fa51009c651e49c3e25 /absl/container/internal/hashtablez_sampler.h | |
| parent | 93d155bc4414f6c121bb1f19dba9fdb27c8943bc (diff) | |
Export of internal Abseil changes.
-- e4e4a3460b64ba0571be217b04ec286bfac6b6bf by Tom Manshreck <shreck@google.com>: Internal change PiperOrigin-RevId: 235573160 -- 200323f1243e20c201d20bdab4c15a20346a27e5 by CJ Johnson <johnsoncj@google.com>: Removed unneded template parameter from InlinedVector internal functions PiperOrigin-RevId: 234910222 -- 2f1bba53c9ca40d0718c4c1edfcfea40edd5049e by CJ Johnson <johnsoncj@google.com>: Add comment highlighting the fact that the InlinedVector(&&, alloc) move constructor overload will still commit pointer theft in one case PiperOrigin-RevId: 234899890 GitOrigin-RevId: e4e4a3460b64ba0571be217b04ec286bfac6b6bf Change-Id: I0aabbabb96e9a057a55ed6b42591ea43b4609efe
Diffstat (limited to 'absl/container/internal/hashtablez_sampler.h')
| -rw-r--r-- | absl/container/internal/hashtablez_sampler.h | 18 |
1 files changed, 16 insertions, 2 deletions
diff --git a/absl/container/internal/hashtablez_sampler.h b/absl/container/internal/hashtablez_sampler.h index e2d8f3643b86..547954f71bf3 100644 --- a/absl/container/internal/hashtablez_sampler.h +++ b/absl/container/internal/hashtablez_sampler.h @@ -12,8 +12,12 @@ // See the License for the specific language governing permissions and // limitations under the License. // -// This is a low level library to sample hashtables and collect runtime -// statistics about them. +// ----------------------------------------------------------------------------- +// File: hashtablez_sampler.h +// ----------------------------------------------------------------------------- +// +// This header file defines the API for a low level library to sample hashtables +// and collect runtime statistics about them. // // `HashtablezSampler` controls the lifecycle of `HashtablezInfo` objects which // store information about a single sample. @@ -22,6 +26,16 @@ // `Sample()` and `Unsample()` make use of a single global sampler with // properties controlled by the flags hashtablez_enabled, // hashtablez_sample_rate, and hashtablez_max_samples. +// +// WARNING +// +// Using this sampling API may cause sampled Swiss tables to use the global +// allocator (operator `new`) in addition to any custom allocator. If you +// are using a table in an unusual circumstance where allocation or calling a +// linux syscall is unacceptable, this could interfere. +// +// +// This utility is internal-only. Use at your own risk. #ifndef ABSL_CONTAINER_INTERNAL_HASHTABLEZ_SAMPLER_H_ #define ABSL_CONTAINER_INTERNAL_HASHTABLEZ_SAMPLER_H_ |