* add align for WorkQueue

* add spinlock

* merge develop

* merge

* Add EventsWaiter

* Revert "Add EventsWaiter"

This reverts commit e206173aa9be7401b83a53581627bfaf557c8fb2.

* Add host_trace_level env variable

* Revert "Optimize perf of softmax_with_cross_entropy (#39553)"

This reverts commit bbe5228c.
Co-authored-by: Nliutiexing <liutiexing@google.com>
Co-authored-by: NZzSean <18818272991@163.com>

* add align for WorkQueue

* add spinlock

* merge develop

* merge

* Add EventsWaiter

* Revert "Add EventsWaiter"

This reverts commit e206173aa9be7401b83a53581627bfaf557c8fb2.

* add log for Executor

* Add CudaTracer to trace CUDA events
Co-authored-by: Nliutiexing <liutiexing@google.com>

* add event node implementation

* modify profiler.stop interface

* fix according to review

* fix file mode

* modify class method name in event_node.cc

* modify LLONG_MAX to ULLONG_MAX

* fix ci error

* fix ci error

* add align for WorkQueue

* add spinlock

* merge develop

* merge

* Add EventsWaiter

* Revert "Add EventsWaiter"

This reverts commit e206173aa9be7401b83a53581627bfaf557c8fb2.

* split template

* Add Profiler and HostTracer

* update

* update

* update

* updateg

* fix cmake
Co-authored-by: Nliutiexing <liutiexing@google.com>