[oe-commits] [bitbake] 05/17: siggen: Add new unitaskhashes data variable which is cached

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

commit 1f326f2c29c2664a5daaeeb0c1fd332630efbdba
Author: Richard Purdie <richard.purdie at linuxfoundation.org>
AuthorDate: Tue Jul 23 22:44:29 2019 +0100

    siggen: Add new unitaskhashes data variable which is cached
    
    We need to preserve unihash task hashes between runs. Use the new SimpleCache
    class to create such a class within the signature generator which is loaded
    at init time and saved when builds complete. The default is unpopulated but
    metadata sig handlers can populate this cache.
    
    Signed-off-by: Richard Purdie <richard.purdie at linuxfoundation.org>
---
 lib/bb/runqueue.py |  1 +
 lib/bb/siggen.py   | 20 ++++++++++++++++++--
 2 files changed, 19 insertions(+), 2 deletions(-)

diff --git a/lib/bb/runqueue.py b/lib/bb/runqueue.py
index 9883a98..519561c 100644
--- a/lib/bb/runqueue.py
+++ b/lib/bb/runqueue.py
@@ -1516,6 +1516,7 @@ class RunQueue:
             self.dm_event_handler_registered = False
 
         if build_done and self.rqexe:
+            bb.parse.siggen.save_unitaskhashes()
             self.teardown_workers()
             if self.rqexe:
                 if self.rqexe.stats.failed:
diff --git a/lib/bb/siggen.py b/lib/bb/siggen.py
index 0105fa7..2bb0b68 100644
--- a/lib/bb/siggen.py
+++ b/lib/bb/siggen.py
@@ -41,6 +41,7 @@ class SignatureGenerator(object):
         self.runtaskdeps = {}
         self.file_checksum_values = {}
         self.taints = {}
+        self.unitaskhashes = {}
 
     def finalise(self, fn, d, varient):
         return
@@ -73,14 +74,23 @@ class SignatureGenerator(object):
         return
 
     def get_taskdata(self):
-        return (self.runtaskdeps, self.taskhash, self.file_checksum_values, self.taints, self.basehash)
+        return (self.runtaskdeps, self.taskhash, self.file_checksum_values, self.taints, self.basehash, self.unitaskhashes)
 
     def set_taskdata(self, data):
-        self.runtaskdeps, self.taskhash, self.file_checksum_values, self.taints, self.basehash = data
+        self.runtaskdeps, self.taskhash, self.file_checksum_values, self.taints, self.basehash, self.unitaskhashes = data
 
     def reset(self, data):
         self.__init__(data)
 
+    def get_taskhashes(self):
+        return self.taskhash, self.unitaskhashes
+
+    def set_taskhashes(self, hashes):
+        self.taskhash, self.unitaskhashes = hashes
+
+    def save_unitaskhashes(self):
+        return
+
 
 class SignatureGeneratorBasic(SignatureGenerator):
     """
@@ -107,6 +117,9 @@ class SignatureGeneratorBasic(SignatureGenerator):
         else:
             self.checksum_cache = None
 
+        self.unihash_cache = bb.cache.SimpleCache("1")
+        self.unitaskhashes = self.unihash_cache.init_cache(data, "bb_unihashes.dat", {})
+
     def init_rundepcheck(self, data):
         self.taskwhitelist = data.getVar("BB_HASHTASK_WHITELIST") or None
         if self.taskwhitelist:
@@ -244,6 +257,9 @@ class SignatureGeneratorBasic(SignatureGenerator):
             bb.fetch2.fetcher_parse_save()
             bb.fetch2.fetcher_parse_done()
 
+    def save_unitaskhashes(self):
+        self.unihash_cache.save(self.unitaskhashes)
+
     def dump_sigtask(self, fn, task, stampbase, runtime):
 
         k = fn + "." + task

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