diff options
| author |   Dave Barach <dave@barachs.net> | 2019-02-19 17:05:30 -0500 |
|---|---|---|
| committer |   Damjan Marion <dmarion@me.com> | 2019-02-20 16:27:47 +0000 |
| commit | a4324a996f34902579338033110d27575a654c8e (patch) | |
| tree | cdc4a58a8d055053cf8ef90b5ddf7d0fcd1a5af2 /src/vlib/main.h | |
| parent | 51a423dc2b0d4aad0bbd8f7e757d2ca49221ff83 (diff) | |
calculate per-thread time offset
The main thread squirrels away vlib_time_now (&vlib_global_main),
worker threads use it to calculate an offset in f64 seconds from their
own vlib_time_now(vm) value. We use that offset until the next barrier
sync.
Thanks to Damjan for the suggestion.
Change-Id: If56cdfe68e5ad8ac3b0d0fc885dc3ba556cd1215
Signed-off-by: Dave Barach <dave@barachs.net>
Diffstat (limited to 'src/vlib/main.h')
| -rw-r--r-- | src/vlib/main.h | 5 |
1 files changed, 4 insertions, 1 deletions
diff --git a/src/vlib/main.h b/src/vlib/main.h index f89ecd3299f..4192c3f2720 100644 --- a/src/vlib/main.h +++ b/src/vlib/main.h @@ -63,6 +63,9 @@ typedef struct vlib_main_t CLIB_CACHE_LINE_ALIGN_MARK (cacheline0); /* Instruction level timing state. */ clib_time_t clib_time; + /* Offset from main thread time */ + f64 time_offset; + f64 time_last_barrier_release; /* Time stamp of last node dispatch. */ u64 cpu_time_last_node_dispatch; @@ -232,7 +235,7 @@ void vlib_worker_loop (vlib_main_t * vm); always_inline f64 vlib_time_now (vlib_main_t * vm) { - return clib_time_now (&vm->clib_time); + return clib_time_now (&vm->clib_time) + vm->time_offset; } always_inline f64 |