gstbuffer-leak-analyzer

#!/usr/bin/python

# Call the script like this:
#
# ../runtest.sh 2>&1 > /tmp/leak.txt
# (browse some videos, then CTRL+c to terminate)
# gstbuffer-leak-analyzer < /tmp/leak.txt
#
# This script expects a log like this in stdin:
#
# 0:00:21.500314002   402   0x99ca30 LOG               GST_BUFFER gstbuffer.c:715:gst_buffer_new: new 0x676a9990
# 0:00:21.415772804   402   0x99ca30 LOG               GST_BUFFER gstbuffer.c:771:gst_buffer_new_allocate: new buffer 0x6762d538 of size 10526 from allocator (nil)
# 0:00:21.502333117   402   0x99ca30 LOG               GST_BUFFER gstbuffer.c:641:_gst_buffer_free: finalize 0x676a9990
#
# 0:00:06.529541560   954  0x1d95ac0 DEBUG             GST_MEMORY gstmemory.c:138:gst_memory_init: new memory 0x1de31e8, maxsize:2063762 offset:0 size:2063762
# 0:00:06.529866872   954  0x1d95ac0 DEBUG             GST_MEMORY gstmemory.c:87:_gst_memory_free: free memory 0x1aea078
# ...
#
# and will report unbalanced object creation, like this:
#
# { 'gstbuffer:': 4 }
#
# To get the needed log, you need to enable the proper GStreamer logging when running the browser:
#
#   export GST_DEBUG="GST_BUFFER:LOG,GST_MEMORY:LOG"

import sys, pprint

# Default values
data = {}
creates = {}
destroys = {}

data['stage'] = 0

# Input parsing
for line in sys.stdin:
  if line.find("gst_buffer_new:") != -1:
    fields = line.split()
    obj = "gstbuffer"
    #ptr = fields[7].strip()
    action = "CREATE"
  elif line.find("gst_buffer_free:") != -1:
    fields = line.split()
    obj = "gstbuffer"
    #ptr = fields[7].strip()
    action = "DESTROY"
  elif line.find("gst_memory_init:") != -1:
    fields = line.split()
    obj = "gstmemory"
    #ptr = fields[8].strip();
    action = "CREATE"
  elif line.find("_gst_memory_free:") != -1:
    fields = line.split()
    obj = "gstmemory"
    #ptr = fields[8].strip();
    action = "DESTROY"
  elif line.find("PAUSING VIDEO") != -1:
    data["stage"] = 100;
  elif line.find("DISPOSING SOURCEBUFFER") != -1:
    data["stage"] = 200;
  elif line.find("RESETTING WEBPAGE") != -1:
    data["stage"] = 300;
  else:
    continue;

  if (action == "CREATE"):
    if not(obj in data.keys()):
      creates[obj] = 0
      destroys[obj] = 0
      data[obj] = 0
    data[obj] = data[obj] + 1
    creates[obj] = creates[obj] + 1
  if (action == "DESTROY"):
    data[obj] = data[obj] - 1
    destroys[obj] = destroys[obj] + 1

  try:
    print '"'+str(data["gstbuffer"])+'", "'+str(data["gstmemory"])+'", "'+str(data["stage"])+'"';
  except:
    pass

print("CREATIONS:")
pprint.PrettyPrinter(indent=2).pprint(creates)
print("DESTRUCTIONS:")
pprint.PrettyPrinter(indent=2).pprint(destroys)
print("BALANCE:")
pprint.PrettyPrinter(indent=2).pprint(data)