* no

* maintain old profiler

* exclude new python record events for old profiler

* maintain old profiler

* maintain

* maintain old profiler

* maintain

* fix cmakes

* no

* fix bugs

* fix doc according to review

* fix api doc format

* fix api doc according to review

* fix bug and add unit test

* fix record event bug

* optimize chrome tracing display

* fix bug

* add comment

* add unit test

* fix a bug

* fix

* fix

* fix format

* no

* fix bugs

* fix doc according to review

* fix api doc format

* fix api doc according to review

* fix bug and add unit test

* fix record event bug

* add python profiler package

* update according to review

* fix bug

* fix bug

* fix bug

* add unit test

* Revert "add unit test"

This reverts commit 4e69ff71b0645e069afe5dd8fea0d07717852c48.

* reduce for pr

* add unit test

* modify for pr

* fix unittest

* update for ci coverage

* modify according to review

* fix bug

* improve coverage

* fix RecordEvent interface

* modify default level to 4

* update interface use

* add const default trace level

* update operator.cc

* 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>

* add align for WorkQueue

* add spinlock

* merge develop

* merge

* Add EventsWaiter

* Revert "Add EventsWaiter"

This reverts commit e206173aa9be7401b83a53581627bfaf557c8fb2.

* profiler skeleton

* update

* update

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

* add align for WorkQueue

* add spinlock

* merge develop

* merge

* Add EventsWaiter

* Revert "Add EventsWaiter"

This reverts commit e206173aa9be7401b83a53581627bfaf557c8fb2.

* update OS info

* split host_event_recorder

* split host_event_recorder

* update

* update

* update

* update

* update

* update

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

* add align for WorkQueue

* add spinlock

* merge develop

* merge

* Add EventsWaiter

* Revert "Add EventsWaiter"

This reverts commit e206173aa9be7401b83a53581627bfaf557c8fb2.

* add os_info

* update

* update

* update

* update

* update

* update for bugfix

* update

* update

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

* add align for WorkQueue

* add spinlock

* merge develop

* merge

* Add EventsWaiter

* Revert "Add EventsWaiter"

This reverts commit e206173aa9be7401b83a53581627bfaf557c8fb2.

* Fix RecordEvent
Co-authored-by: Nliutiexing <liutiexing@google.com>

* add align for WorkQueue

* add spinlock

* merge develop

* merge

* Add EventsWaiter

* Revert "Add EventsWaiter"

This reverts commit e206173aa9be7401b83a53581627bfaf557c8fb2.

* update HostEventTracer

* update HostEventTracer

* fix c++17

* update

* update

* update

* update

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

Add basic Cost Model, it uses executor to run program and profile it to get op time.

This is an early basic version, we will add more functions in the future.

* make flag setter easier

* update

* rename macro name

* fix bug of public/writable

* update to pass CI

* polish

* fix CPU link error

* use iwyu clean include second time, test=develop

* delete empty line of pybing.cc, test=develop

* use nvtx push pop in timeline, test=develop

* change year, test=develop

* add #ifdef PADDLE_WITH_CUDA, test=develop

* add #ifndef WIN32, test=develop

* is_pushed to is_pushed_, test=develop

* use iwyu clean include, test=develop, test=win

* compilation error, test=develop

* fix compilation error2, test=develop

* fix compilation error3, test=develop

* fix compilation error4, test=develop

* fix compilation error5, test=develop

* fix compilation error6, test=develop

* fix compilation error7, test=develop

* fix compilation error8, test=develop

* fix compilation error8, test=develop

* fix compilation error10, test=develop

* fix compilation error11, test=develop

* Refine PADDLE_ENFORCE in paddle/fluid/platform
test=develop

* add profiler_help.h to refine the code test=develop

* add framework overhead ratio, test=develop

* print GpuMemcpy overhead, test=develop

* add support for the driver api callback and fix the profiler name show bug

* fix the profile print error test=develop

* add python flag to control profile level test=develop

* fix the bug of profile update test=develop

* add support for nested profiling event and printing in different level

* fix profiler warning message in cpu profile mode test=develop

test=develop

test=develop