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authorMatt A. Tobin <mattatobin@localhost.localdomain>2018-02-02 04:16:08 -0500
committerMatt A. Tobin <mattatobin@localhost.localdomain>2018-02-02 04:16:08 -0500
commit5f8de423f190bbb79a62f804151bc24824fa32d8 (patch)
tree10027f336435511475e392454359edea8e25895d /tools/profiler/merge-profiles.py
parent49ee0794b5d912db1f95dce6eb52d781dc210db5 (diff)
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Add m-esr52 at 52.6.0
Diffstat (limited to 'tools/profiler/merge-profiles.py')
-rwxr-xr-xtools/profiler/merge-profiles.py113
1 files changed, 113 insertions, 0 deletions
diff --git a/tools/profiler/merge-profiles.py b/tools/profiler/merge-profiles.py
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+++ b/tools/profiler/merge-profiles.py
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+#!/usr/bin/env python
+#
+# This script takes b2g process profiles and merged them into a single profile.
+# The meta data is taken from the first profile. The startTime for each profile
+# is used to syncronized the samples. Each thread is moved into the merged
+# profile.
+#
+import json
+import re
+import sys
+
+def MergeProfiles(files):
+ threads = []
+ fileData = []
+ symTable = dict()
+ meta = None
+ libs = None
+ videoUrl = None
+ minStartTime = None
+
+ for fname in files:
+ if fname.startswith("--video="):
+ videoUrl = fname[8:]
+ continue
+
+ match = re.match('profile_([0-9]+)_(.+)\.sym', fname)
+ if match is None:
+ raise Exception("Filename '" + fname + "' doesn't match expected pattern")
+ pid = match.groups(0)[0]
+ pname = match.groups(0)[1]
+
+ fp = open(fname, "r")
+ fileData = json.load(fp)
+ fp.close()
+
+ if meta is None:
+ meta = fileData['profileJSON']['meta'].copy()
+ libs = fileData['profileJSON']['libs']
+ minStartTime = meta['startTime']
+ else:
+ minStartTime = min(minStartTime, fileData['profileJSON']['meta']['startTime'])
+ meta['startTime'] = minStartTime
+
+ for thread in fileData['profileJSON']['threads']:
+ thread['name'] = thread['name'] + " (" + pname + ":" + pid + ")"
+ threads.append(thread)
+
+ # Note that pid + sym, pid + location could be ambigious
+ # if we had pid=11 sym=1 && pid=1 sym=11.
+ pidStr = pid + ":"
+
+ thread['startTime'] = fileData['profileJSON']['meta']['startTime']
+ if meta['version'] >= 3:
+ stringTable = thread['stringTable']
+ for i, str in enumerate(stringTable):
+ if str[:2] == '0x':
+ newLoc = pidStr + str
+ stringTable[i] = newLoc
+ symTable[newLoc] = str
+ else:
+ samples = thread['samples']
+ for sample in thread['samples']:
+ for frame in sample['frames']:
+ if "location" in frame and frame['location'][0:2] == '0x':
+ oldLoc = frame['location']
+ newLoc = pidStr + oldLoc
+ frame['location'] = newLoc
+ # Default to the unprefixed symbol if no translation is
+ symTable[newLoc] = oldLoc
+
+ filesyms = fileData['symbolicationTable']
+ for sym in filesyms.keys():
+ symTable[pidStr + sym] = filesyms[sym]
+
+ # For each thread, make the time offsets line up based on the
+ # earliest start
+ for thread in threads:
+ delta = thread['startTime'] - minStartTime
+ if meta['version'] >= 3:
+ idxTime = thread['samples']['schema']['time']
+ for sample in thread['samples']['data']:
+ sample[idxTime] += delta
+ idxTime = thread['markers']['schema']['time']
+ for marker in thread['markers']['data']:
+ marker[idxTime] += delta
+ else:
+ for sample in thread['samples']:
+ if "time" in sample:
+ sample['time'] += delta
+ for marker in thread['markers']:
+ marker['time'] += delta
+
+ result = dict()
+ result['profileJSON'] = dict()
+ result['profileJSON']['meta'] = meta
+ result['profileJSON']['libs'] = libs
+ result['profileJSON']['threads'] = threads
+ result['symbolicationTable'] = symTable
+ result['format'] = "profileJSONWithSymbolicationTable,1"
+ if videoUrl:
+ result['profileJSON']['meta']['videoCapture'] = {"src": videoUrl}
+
+ json.dump(result, sys.stdout)
+
+
+if len(sys.argv) > 1:
+ MergeProfiles(sys.argv[1:])
+ sys.exit(0)
+
+print "Usage: merge-profile.py profile_<pid1>_<pname1>.sym profile_<pid2>_<pname2>.sym > merged.sym"
+
+
+