[PATCH 4/7] buildstats: Separate out the build and task data to allow improvements

[Richard Purdie <richard.purdie@linuxfoundation.org>]

The combined build and task data code makes changing things hard, separate
out the functions so that changes can be made to the task data whilst the
build data remains unchanged.

Signed-off-by: Richard Purdie <richard.purdie@linuxfoundation.org>

diff --git a/meta/classes/buildstats.bbclass b/meta/classes/buildstats.bbclass
index 4fa6981..71469e4 100644
--- a/meta/classes/buildstats.bbclass
+++ b/meta/classes/buildstats.bbclass
@@ -20,17 +20,33 @@ def get_cputime():
         fields = f.readline().rstrip().split()[1:]
     return sum(int(field) for field in fields)
 
-def set_timedata(var, d, server_time=None):
-    import time
-    if server_time:
-        time = server_time
+def set_timedata(var, d, server_time):
+    cputime = get_cputime()
+    proctime = get_process_cputime(os.getpid())
+    d.setVar(var, (server_time, cputime, proctime))
+
+def get_timedata(var, d, end_time):
+    timedata = d.getVar(var, False)
+    if timedata is None:
+        return
+    oldtime, oldcpu, oldproc = timedata
+    procdiff = get_process_cputime(os.getpid()) - oldproc
+    cpudiff = get_cputime() - oldcpu
+    timediff = end_time - oldtime
+    if cpudiff > 0:
+        cpuperc = float(procdiff) * 100 / cpudiff
     else:
-        time = time.time()
+        cpuperc = None
+    return timediff, cpuperc
+
+def set_buildtimedata(var, d):
+    import time
+    time = time.time()
     cputime = get_cputime()
     proctime = get_process_cputime(os.getpid())
     d.setVar(var, (time, cputime, proctime))
 
-def get_timedata(var, d, server_time=None):
+def get_buildtimedata(var, d):
     import time
     timedata = d.getVar(var, False)
     if timedata is None:
@@ -38,10 +54,7 @@ def get_timedata(var, d, server_time=None):
     oldtime, oldcpu, oldproc = timedata
     procdiff = get_process_cputime(os.getpid()) - oldproc
     cpudiff = get_cputime() - oldcpu
-    if server_time:
-        end_time = server_time
-    else:
-        end_time = time.time()
+    end_time = time.time()
     timediff = end_time - oldtime
     if cpudiff > 0:
         cpuperc = float(procdiff) * 100 / cpudiff
@@ -81,7 +94,7 @@ python run_buildstats () {
         # set the buildname
         ########################################################################
         bb.utils.mkdirhier(bsdir)
-        set_timedata("__timedata_build", d)
+        set_buildtimedata("__timedata_build", d)
         build_time = os.path.join(bsdir, "build_stats")
         # write start of build into build_time
         with open(build_time, "a") as f:
@@ -99,7 +112,7 @@ python run_buildstats () {
             ########################################################################
             # Write build statistics for the build
             ########################################################################
-            timedata = get_timedata("__timedata_build", d)
+            timedata = get_buildtimedata("__timedata_build", d)
             if timedata:
                 time, cpu = timedata
                 # write end of build and cpu used into build_time