add lock to BF cached-allocator #3238

Job	Run time
Rsync code	2m 34s
Build-dipu-cuda-latest-target	1m 33s
Build-dipu-cuda	2m 46s
Build-dipu-camb-latest-target	14s
Build-dipu-camb	4m 54s
Build-dipu-pytorch-for-ascend	8s
Build-dipu-ascend	1m 48s
Build-dipu-ascend-latest-target	2m 17s
Test-dipu-camb-latest-target	0s
Test-dipu-cuda-latest-target	0s
Test-dipu-ascend	39s
Test-one-iter-ascend	8m 23s
Test-dipu-ascend-latest-target	35s
Test-one-iter-cuda	26m 29s
Test-dipu-cuda	12m 34s
Test-one-iter-camb	25m 20s
Test-dipu-camb	19m 39s
	1h 49m 53s

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