[oe-commits] [bitbake] branch master-next updated: cache: Create a symlink for current cachefile

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rpurdie pushed a commit to branch master-next
in repository bitbake.

The following commit(s) were added to refs/heads/master-next by this push:
     new cf286df  cache: Create a symlink for current cachefile
cf286df is described below

commit cf286dff653eed542bf347ca46234c224944d5b0
Author: Robert Yang <liezhi.yang at windriver.com>
AuthorDate: Thu Jul 4 12:12:37 2019 +0800

    cache: Create a symlink for current cachefile
    
    So that people or other tools can easily know which one is being used, just
    like what we did for run.do_task and log.do_task, otherwise, we have no way
    to know it. I usually use "ls -t", but it isn't reliable since the one which
    is being used may not the latest one.
    
    Signed-off-by: Robert Yang <liezhi.yang at windriver.com>
    Signed-off-by: Richard Purdie <richard.purdie at linuxfoundation.org>
---
 lib/bb/cache.py | 9 +++++++++
 1 file changed, 9 insertions(+)

diff --git a/lib/bb/cache.py b/lib/bb/cache.py
index bec8ef7..ab18dd5 100644
--- a/lib/bb/cache.py
+++ b/lib/bb/cache.py
@@ -396,6 +396,15 @@ class Cache(NoCache):
         else:
             logger.debug(1, "Cache file %s not found, building..." % self.cachefile)
 
+        # We don't use the symlink, its just for debugging convinience
+        symlink = os.path.join(self.cachedir, "bb_cache.dat")
+        if os.path.exists(symlink):
+            bb.utils.remove(symlink)
+        try:
+            os.symlink(os.path.basename(self.cachefile), symlink)
+        except OSError:
+            pass
+
     def load_cachefile(self):
         cachesize = 0
         previous_progress = 0

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