[PATCH v4 0/5] Build cache enhancement

["Steven Shi" <steven.shi@intel.com>]

From: "Shi, Steven" <steven.shi@intel.com>

Enhance the edk2 build cache with below patches:
Patch 01/05: Improve the cache hit rate through new cache checkpoint and hash algorithm
Patch 02/05: Print more info to explain why a module build cache miss
Patch 03/05: Fix the unsafe [self.Arch][self.Name] key usage in build cache
Patch 04/05  Add the GenFds multi-thread support in build cache
Patch 05/05  Improve the file saving and copying functions reliability in build cache


You can directly try this patch set in the branch:
https://github.com/shijunjing/edk2/tree/build_cache_improve_v4

V4:
Change single global lock into two locks, which are cache_lock and file_lock,
for better cache performance and IO reliability in windows

V3:
Add patch 5. To improve the autogen CopyFileOnChange() and SaveFileOnChange()
functions reliability for build cache

V2:
Enhance the SaveHashChainFileToCache() function in ModuleAutoGen.py and
not need to call f.close() in the "with open(xxx) as f:" block. The
with block will close the file automatically

V1:
Initial patch set

Shi, Steven (5):
  BaseTools: Improve the cache hit in the edk2 build cache
  BaseTools: Print first cache missing file for build cachle
  BaseTools: Change the [Arch][Name] module key in Build cache
  BaseTools: Add GenFds multi-thread support in build cache
  BaseTools: Improve the file saving and copying reliability

 .../Source/Python/AutoGen/AutoGenWorker.py    |  27 +-
 BaseTools/Source/Python/AutoGen/CacheIR.py    |  28 +
 BaseTools/Source/Python/AutoGen/DataPipe.py   |   8 +
 BaseTools/Source/Python/AutoGen/GenC.py       |   0
 BaseTools/Source/Python/AutoGen/GenMake.py    | 229 +++---
 .../Source/Python/AutoGen/ModuleAutoGen.py    | 738 ++++++++++++++++--
 BaseTools/Source/Python/Common/GlobalData.py  |  11 +
 BaseTools/Source/Python/Common/Misc.py        |  29 +-
 BaseTools/Source/Python/build/build.py        | 182 +++--
 9 files changed, 1011 insertions(+), 241 deletions(-)
 mode change 100644 => 100755 BaseTools/Source/Python/AutoGen/AutoGenWorker.py
 create mode 100755 BaseTools/Source/Python/AutoGen/CacheIR.py
 mode change 100644 => 100755 BaseTools/Source/Python/AutoGen/DataPipe.py
 mode change 100644 => 100755 BaseTools/Source/Python/AutoGen/GenC.py
 mode change 100644 => 100755 BaseTools/Source/Python/AutoGen/GenMake.py
 mode change 100644 => 100755 BaseTools/Source/Python/AutoGen/ModuleAutoGen.py
 mode change 100644 => 100755 BaseTools/Source/Python/Common/GlobalData.py
 mode change 100644 => 100755 BaseTools/Source/Python/Common/Misc.py
 mode change 100644 => 100755 BaseTools/Source/Python/build/build.py

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2.17.1