ezbench.py: allow applications to cache the git history

This considerably speeds up the report generation in the compare tool

2 files changed, 13 insertions, 9 deletions

diff --git a/stats/compare_reports.py b/stats/compare_reports.py
index 8e93146..03b638b 100755
--- a/stats/compare_reports.py
+++ b/stats/compare_reports.py
@@ -68,12 +68,15 @@ db["benchmarks"] = list()
 db['env_sets'] = dict()
 db["envs"] = dict()
 human_envs = dict()
+git_history = None
 for log_folder in args.log_folder:
 	print("{f}: ".format(f=log_folder), end="")
 	report_name = [x for x in log_folder.split('/') if x][-1]
 	try:
 		sbench = SmartEzbench(ezbench_dir, report_name, readonly=True)
-		report = sbench.report()
+		if git_history is None:
+			git_history = sbench.git_history()
+		report = sbench.report(git_history=git_history)
 	except RuntimeError:
 		report = genPerformanceReport(log_folder)
 
diff --git a/utils/ezbench.py b/utils/ezbench.py
index 5e80a14..b923d93 100644
--- a/utils/ezbench.py
+++ b/utils/ezbench.py
@@ -568,7 +568,7 @@ class SmartEzbench:
 
         return True
 
-    def __get_git_history__(self):
+    def git_history(self):
         git_history = list()
 
         # Get the repo directory
@@ -581,11 +581,11 @@ class SmartEzbench:
 
         return git_history
 
-    def report(self, reorder_commits = True):
-        git_history = dict()
-
-        if reorder_commits:
-            git_history = self.__get_git_history__()
+    def report(self, git_history=None, reorder_commits = True):
+        if reorder_commits and git_history is None:
+            git_history = self.git_history()
+        else:
+            git_history = list()
 
         # Generate the report, order commits based on the git history
         r = genPerformanceReport(self.state['log_folder'], silentMode = True,
@@ -607,9 +607,10 @@ class SmartEzbench:
                        "{} due to commit '{}'".format(msg, new))
             return None
 
-    def schedule_enhancements(self, perf_change_threshold=0.05):
+    def schedule_enhancements(self, git_history=None, perf_change_threshold=0.05):
         # Generate the report, order commits based on the git history
-        git_history = self.__get_git_history__()
+        if git_history is None:
+            git_history = self.git_history()
         r = genPerformanceReport(self.state['log_folder'], silentMode = True,
                                  commits_rev_order=git_history)