From 7971cb0aa3e517a53f0ce6d3ee9bc3179041ccb8 Mon Sep 17 00:00:00 2001
From: John Klug <john.klug@multitech.com>
Date: Wed, 25 May 2022 17:12:18 -0500
Subject: mLinux 6

---
 scripts/pybootchartgui/pybootchartgui/parsing.py | 740 +++++++++++++++++++++++
 1 file changed, 740 insertions(+)
 create mode 100644 scripts/pybootchartgui/pybootchartgui/parsing.py

(limited to 'scripts/pybootchartgui/pybootchartgui/parsing.py')

diff --git a/scripts/pybootchartgui/pybootchartgui/parsing.py b/scripts/pybootchartgui/pybootchartgui/parsing.py
new file mode 100644
index 0000000..d423b9f
--- /dev/null
+++ b/scripts/pybootchartgui/pybootchartgui/parsing.py
@@ -0,0 +1,740 @@
+#  This file is part of pybootchartgui.
+
+#  pybootchartgui is free software: you can redistribute it and/or modify
+#  it under the terms of the GNU General Public License as published by
+#  the Free Software Foundation, either version 3 of the License, or
+#  (at your option) any later version.
+
+#  pybootchartgui is distributed in the hope that it will be useful,
+#  but WITHOUT ANY WARRANTY; without even the implied warranty of
+#  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+#  GNU General Public License for more details.
+
+#  You should have received a copy of the GNU General Public License
+#  along with pybootchartgui. If not, see <http://www.gnu.org/licenses/>.
+
+
+from __future__ import with_statement
+
+import os
+import string
+import re
+import sys
+import tarfile
+from time import clock
+from collections import defaultdict
+from functools import reduce
+
+from .samples import *
+from .process_tree import ProcessTree
+
+if sys.version_info >= (3, 0):
+    long = int
+
+# Parsing produces as its end result a 'Trace'
+
+class Trace:
+    def __init__(self, writer, paths, options):
+        self.processes = {}
+        self.start = {}
+        self.end = {}
+        self.min = None
+        self.max = None
+        self.headers = None
+        self.disk_stats = None
+        self.ps_stats = None
+        self.taskstats = None
+        self.cpu_stats = None
+        self.cmdline = None
+        self.kernel = None
+        self.kernel_tree = None
+        self.filename = None
+        self.parent_map = None
+        self.mem_stats = None
+
+        if len(paths):
+            parse_paths (writer, self, paths)
+            if not self.valid():
+                raise ParseError("empty state: '%s' does not contain a valid bootchart" % ", ".join(paths))
+
+            if options.full_time:
+                self.min = min(self.start.keys())
+                self.max = max(self.end.keys())
+
+        return
+
+        # Turn that parsed information into something more useful
+        # link processes into a tree of pointers, calculate statistics
+        self.compile(writer)
+
+        # Crop the chart to the end of the first idle period after the given
+        # process
+        if options.crop_after:
+            idle = self.crop (writer, options.crop_after)
+        else:
+            idle = None
+
+        # Annotate other times as the first start point of given process lists
+        self.times = [ idle ]
+        if options.annotate:
+            for procnames in options.annotate:
+                names = [x[:15] for x in procnames.split(",")]
+                for proc in self.ps_stats.process_map.values():
+                    if proc.cmd in names:
+                        self.times.append(proc.start_time)
+                        break
+                    else:
+                        self.times.append(None)
+
+        self.proc_tree = ProcessTree(writer, self.kernel, self.ps_stats,
+                                     self.ps_stats.sample_period,
+                                     self.headers.get("profile.process"),
+                                     options.prune, idle, self.taskstats,
+                                     self.parent_map is not None)
+
+        if self.kernel is not None:
+            self.kernel_tree = ProcessTree(writer, self.kernel, None, 0,
+                                           self.headers.get("profile.process"),
+                                           False, None, None, True)
+
+    def valid(self):
+        return len(self.processes) != 0
+        return self.headers != None and self.disk_stats != None and \
+               self.ps_stats != None and self.cpu_stats != None
+
+    def add_process(self, process, start, end):
+        self.processes[process] = [start, end]
+        if start not in self.start:
+            self.start[start] = []
+        if process not in self.start[start]:
+            self.start[start].append(process)
+        if end not in self.end:
+            self.end[end] = []
+        if process not in self.end[end]:
+            self.end[end].append(process)
+
+    def compile(self, writer):
+
+        def find_parent_id_for(pid):
+            if pid is 0:
+                return 0
+            ppid = self.parent_map.get(pid)
+            if ppid:
+                # many of these double forks are so short lived
+                # that we have no samples, or process info for them
+                # so climb the parent hierarcy to find one
+                if int (ppid * 1000) not in self.ps_stats.process_map:
+#                    print "Pid '%d' short lived with no process" % ppid
+                    ppid = find_parent_id_for (ppid)
+#                else:
+#                    print "Pid '%d' has an entry" % ppid
+            else:
+#                print "Pid '%d' missing from pid map" % pid
+                return 0
+            return ppid
+
+        # merge in the cmdline data
+        if self.cmdline is not None:
+            for proc in self.ps_stats.process_map.values():
+                rpid = int (proc.pid // 1000)
+                if rpid in self.cmdline:
+                    cmd = self.cmdline[rpid]
+                    proc.exe = cmd['exe']
+                    proc.args = cmd['args']
+#                else:
+#                    print "proc %d '%s' not in cmdline" % (rpid, proc.exe)
+
+        # re-parent any stray orphans if we can
+        if self.parent_map is not None:
+            for process in self.ps_stats.process_map.values():
+                ppid = find_parent_id_for (int(process.pid // 1000))
+                if ppid:
+                    process.ppid = ppid * 1000
+
+        # stitch the tree together with pointers
+        for process in self.ps_stats.process_map.values():
+            process.set_parent (self.ps_stats.process_map)
+
+        # count on fingers variously
+        for process in self.ps_stats.process_map.values():
+            process.calc_stats (self.ps_stats.sample_period)
+
+    def crop(self, writer, crop_after):
+
+        def is_idle_at(util, start, j):
+            k = j + 1
+            while k < len(util) and util[k][0] < start + 300:
+                k += 1
+            k = min(k, len(util)-1)
+
+            if util[j][1] >= 0.25:
+                return False
+
+            avgload = sum(u[1] for u in util[j:k+1]) / (k-j+1)
+            if avgload < 0.25:
+                return True
+            else:
+                return False
+        def is_idle(util, start):
+            for j in range(0, len(util)):
+                if util[j][0] < start:
+                    continue
+                return is_idle_at(util, start, j)
+            else:
+                return False
+
+        names = [x[:15] for x in crop_after.split(",")]
+        for proc in self.ps_stats.process_map.values():
+            if proc.cmd in names or proc.exe in names:
+                writer.info("selected proc '%s' from list (start %d)"
+                            % (proc.cmd, proc.start_time))
+                break
+        if proc is None:
+            writer.warn("no selected crop proc '%s' in list" % crop_after)
+
+
+        cpu_util = [(sample.time, sample.user + sample.sys + sample.io) for sample in self.cpu_stats]
+        disk_util = [(sample.time, sample.util) for sample in self.disk_stats]
+
+        idle = None
+        for i in range(0, len(cpu_util)):
+            if cpu_util[i][0] < proc.start_time:
+                continue
+            if is_idle_at(cpu_util, cpu_util[i][0], i) \
+               and is_idle(disk_util, cpu_util[i][0]):
+                idle = cpu_util[i][0]
+                break
+
+        if idle is None:
+            writer.warn ("not idle after proc '%s'" % crop_after)
+            return None
+
+        crop_at = idle + 300
+        writer.info ("cropping at time %d" % crop_at)
+        while len (self.cpu_stats) \
+                    and self.cpu_stats[-1].time > crop_at:
+            self.cpu_stats.pop()
+        while len (self.disk_stats) \
+                    and self.disk_stats[-1].time > crop_at:
+            self.disk_stats.pop()
+
+        self.ps_stats.end_time = crop_at
+
+        cropped_map = {}
+        for key, value in self.ps_stats.process_map.items():
+            if (value.start_time <= crop_at):
+                cropped_map[key] = value
+
+        for proc in cropped_map.values():
+            proc.duration = min (proc.duration, crop_at - proc.start_time)
+            while len (proc.samples) \
+                        and proc.samples[-1].time > crop_at:
+                proc.samples.pop()
+
+        self.ps_stats.process_map = cropped_map
+
+        return idle
+
+
+
+class ParseError(Exception):
+    """Represents errors during parse of the bootchart."""
+    def __init__(self, value):
+        self.value = value
+
+    def __str__(self):
+        return self.value
+
+def _parse_headers(file):
+    """Parses the headers of the bootchart."""
+    def parse(acc, line):
+        (headers, last) = acc
+        if '=' in line:
+            last, value = map (lambda x: x.strip(), line.split('=', 1))
+        else:
+            value = line.strip()
+        headers[last] += value
+        return headers, last
+    return reduce(parse, file.read().decode('utf-8').split('\n'), (defaultdict(str),''))[0]
+
+def _parse_timed_blocks(file):
+    """Parses (ie., splits) a file into so-called timed-blocks. A
+    timed-block consists of a timestamp on a line by itself followed
+    by zero or more lines of data for that point in time."""
+    def parse(block):
+        lines = block.split('\n')
+        if not lines:
+            raise ParseError('expected a timed-block consisting a timestamp followed by data lines')
+        try:
+            return (int(lines[0]), lines[1:])
+        except ValueError:
+            raise ParseError("expected a timed-block, but timestamp '%s' is not an integer" % lines[0])
+    blocks = file.read().decode('utf-8').split('\n\n')
+    return [parse(block) for block in blocks if block.strip() and not block.endswith(' not running\n')]
+
+def _parse_proc_ps_log(writer, file):
+    """
+     * See proc(5) for details.
+     *
+     * {pid, comm, state, ppid, pgrp, session, tty_nr, tpgid, flags, minflt, cminflt, majflt, cmajflt, utime, stime,
+     *  cutime, cstime, priority, nice, 0, itrealvalue, starttime, vsize, rss, rlim, startcode, endcode, startstack,
+     *  kstkesp, kstkeip}
+    """
+    processMap = {}
+    ltime = 0
+    timed_blocks = _parse_timed_blocks(file)
+    for time, lines in timed_blocks:
+        for line in lines:
+            if not line: continue
+            tokens = line.split(' ')
+            if len(tokens) < 21:
+                continue
+
+            offset = [index for index, token in enumerate(tokens[1:]) if token[-1] == ')'][0]
+            pid, cmd, state, ppid = int(tokens[0]), ' '.join(tokens[1:2+offset]), tokens[2+offset], int(tokens[3+offset])
+            userCpu, sysCpu, stime = int(tokens[13+offset]), int(tokens[14+offset]), int(tokens[21+offset])
+
+            # magic fixed point-ness ...
+            pid *= 1000
+            ppid *= 1000
+            if pid in processMap:
+                process = processMap[pid]
+                process.cmd = cmd.strip('()') # why rename after latest name??
+            else:
+                process = Process(writer, pid, cmd.strip('()'), ppid, min(time, stime))
+                processMap[pid] = process
+
+            if process.last_user_cpu_time is not None and process.last_sys_cpu_time is not None and ltime is not None:
+                userCpuLoad, sysCpuLoad = process.calc_load(userCpu, sysCpu, max(1, time - ltime))
+                cpuSample = CPUSample('null', userCpuLoad, sysCpuLoad, 0.0)
+                process.samples.append(ProcessSample(time, state, cpuSample))
+
+            process.last_user_cpu_time = userCpu
+            process.last_sys_cpu_time = sysCpu
+        ltime = time
+
+    if len (timed_blocks) < 2:
+        return None
+
+    startTime = timed_blocks[0][0]
+    avgSampleLength = (ltime - startTime)/(len (timed_blocks) - 1)
+
+    return ProcessStats (writer, processMap, len (timed_blocks), avgSampleLength, startTime, ltime)
+
+def _parse_taskstats_log(writer, file):
+    """
+     * See bootchart-collector.c for details.
+     *
+     * { pid, ppid, comm, cpu_run_real_total, blkio_delay_total, swapin_delay_total }
+     *
+    """
+    processMap = {}
+    pidRewrites = {}
+    ltime = None
+    timed_blocks = _parse_timed_blocks(file)
+    for time, lines in timed_blocks:
+        # we have no 'stime' from taskstats, so prep 'init'
+        if ltime is None:
+            process = Process(writer, 1, '[init]', 0, 0)
+            processMap[1000] = process
+            ltime = time
+#                       continue
+        for line in lines:
+            if not line: continue
+            tokens = line.split(' ')
+            if len(tokens) != 6:
+                continue
+
+            opid, ppid, cmd = int(tokens[0]), int(tokens[1]), tokens[2]
+            cpu_ns, blkio_delay_ns, swapin_delay_ns = long(tokens[-3]), long(tokens[-2]), long(tokens[-1]),
+
+            # make space for trees of pids
+            opid *= 1000
+            ppid *= 1000
+
+            # when the process name changes, we re-write the pid.
+            if opid in pidRewrites:
+                pid = pidRewrites[opid]
+            else:
+                pid = opid
+
+            cmd = cmd.strip('(').strip(')')
+            if pid in processMap:
+                process = processMap[pid]
+                if process.cmd != cmd:
+                    pid += 1
+                    pidRewrites[opid] = pid
+#                                       print "process mutation ! '%s' vs '%s' pid %s -> pid %s\n" % (process.cmd, cmd, opid, pid)
+                    process = process.split (writer, pid, cmd, ppid, time)
+                    processMap[pid] = process
+                else:
+                    process.cmd = cmd;
+            else:
+                process = Process(writer, pid, cmd, ppid, time)
+                processMap[pid] = process
+
+            delta_cpu_ns = (float) (cpu_ns - process.last_cpu_ns)
+            delta_blkio_delay_ns = (float) (blkio_delay_ns - process.last_blkio_delay_ns)
+            delta_swapin_delay_ns = (float) (swapin_delay_ns - process.last_swapin_delay_ns)
+
+            # make up some state data ...
+            if delta_cpu_ns > 0:
+                state = "R"
+            elif delta_blkio_delay_ns + delta_swapin_delay_ns > 0:
+                state = "D"
+            else:
+                state = "S"
+
+            # retain the ns timing information into a CPUSample - that tries
+            # with the old-style to be a %age of CPU used in this time-slice.
+            if delta_cpu_ns + delta_blkio_delay_ns + delta_swapin_delay_ns > 0:
+#                               print "proc %s cpu_ns %g delta_cpu %g" % (cmd, cpu_ns, delta_cpu_ns)
+                cpuSample = CPUSample('null', delta_cpu_ns, 0.0,
+                                      delta_blkio_delay_ns,
+                                      delta_swapin_delay_ns)
+                process.samples.append(ProcessSample(time, state, cpuSample))
+
+            process.last_cpu_ns = cpu_ns
+            process.last_blkio_delay_ns = blkio_delay_ns
+            process.last_swapin_delay_ns = swapin_delay_ns
+        ltime = time
+
+    if len (timed_blocks) < 2:
+        return None
+
+    startTime = timed_blocks[0][0]
+    avgSampleLength = (ltime - startTime)/(len(timed_blocks)-1)
+
+    return ProcessStats (writer, processMap, len (timed_blocks), avgSampleLength, startTime, ltime)
+
+def _parse_proc_stat_log(file):
+    samples = []
+    ltimes = None
+    for time, lines in _parse_timed_blocks(file):
+        # skip emtpy lines
+        if not lines:
+            continue
+        # CPU times {user, nice, system, idle, io_wait, irq, softirq}
+        tokens = lines[0].split()
+        times = [ int(token) for token in tokens[1:] ]
+        if ltimes:
+            user = float((times[0] + times[1]) - (ltimes[0] + ltimes[1]))
+            system = float((times[2] + times[5] + times[6]) - (ltimes[2] + ltimes[5] + ltimes[6]))
+            idle = float(times[3] - ltimes[3])
+            iowait = float(times[4] - ltimes[4])
+
+            aSum = max(user + system + idle + iowait, 1)
+            samples.append( CPUSample(time, user/aSum, system/aSum, iowait/aSum) )
+
+        ltimes = times
+        # skip the rest of statistics lines
+    return samples
+
+def _parse_proc_disk_stat_log(file, numCpu):
+    """
+    Parse file for disk stats, but only look at the whole device, eg. sda,
+    not sda1, sda2 etc. The format of relevant lines should be:
+    {major minor name rio rmerge rsect ruse wio wmerge wsect wuse running use aveq}
+    """
+    disk_regex_re = re.compile ('^([hsv]d.|mtdblock\d|mmcblk\d|cciss/c\d+d\d+.*)$')
+
+    # this gets called an awful lot.
+    def is_relevant_line(linetokens):
+        if len(linetokens) != 14:
+            return False
+        disk = linetokens[2]
+        return disk_regex_re.match(disk)
+
+    disk_stat_samples = []
+
+    for time, lines in _parse_timed_blocks(file):
+        sample = DiskStatSample(time)
+        relevant_tokens = [linetokens for linetokens in map (lambda x: x.split(),lines) if is_relevant_line(linetokens)]
+
+        for tokens in relevant_tokens:
+            disk, rsect, wsect, use = tokens[2], int(tokens[5]), int(tokens[9]), int(tokens[12])
+            sample.add_diskdata([rsect, wsect, use])
+
+        disk_stat_samples.append(sample)
+
+    disk_stats = []
+    for sample1, sample2 in zip(disk_stat_samples[:-1], disk_stat_samples[1:]):
+        interval = sample1.time - sample2.time
+        if interval == 0:
+            interval = 1
+        sums = [ a - b for a, b in zip(sample1.diskdata, sample2.diskdata) ]
+        readTput = sums[0] / 2.0 * 100.0 / interval
+        writeTput = sums[1] / 2.0 * 100.0 / interval
+        util = float( sums[2] ) / 10 / interval / numCpu
+        util = max(0.0, min(1.0, util))
+        disk_stats.append(DiskSample(sample2.time, readTput, writeTput, util))
+
+    return disk_stats
+
+def _parse_proc_meminfo_log(file):
+    """
+    Parse file for global memory statistics.
+    The format of relevant lines should be: ^key: value( unit)?
+    """
+    used_values = ('MemTotal', 'MemFree', 'Buffers', 'Cached', 'SwapTotal', 'SwapFree',)
+
+    mem_stats = []
+    meminfo_re = re.compile(r'([^ \t:]+):\s*(\d+).*')
+
+    for time, lines in _parse_timed_blocks(file):
+        sample = MemSample(time)
+
+        for line in lines:
+            match = meminfo_re.match(line)
+            if not match:
+                raise ParseError("Invalid meminfo line \"%s\"" % match.groups(0))
+            sample.add_value(match.group(1), int(match.group(2)))
+
+        if sample.valid():
+            mem_stats.append(sample)
+
+    return mem_stats
+
+# if we boot the kernel with: initcall_debug printk.time=1 we can
+# get all manner of interesting data from the dmesg output
+# We turn this into a pseudo-process tree: each event is
+# characterised by a
+# we don't try to detect a "kernel finished" state - since the kernel
+# continues to do interesting things after init is called.
+#
+# sample input:
+# [    0.000000] ACPI: FACP 3f4fc000 000F4 (v04 INTEL  Napa     00000001 MSFT 01000013)
+# ...
+# [    0.039993] calling  migration_init+0x0/0x6b @ 1
+# [    0.039993] initcall migration_init+0x0/0x6b returned 1 after 0 usecs
+def _parse_dmesg(writer, file):
+    timestamp_re = re.compile ("^\[\s*(\d+\.\d+)\s*]\s+(.*)$")
+    split_re = re.compile ("^(\S+)\s+([\S\+_-]+) (.*)$")
+    processMap = {}
+    idx = 0
+    inc = 1.0 / 1000000
+    kernel = Process(writer, idx, "k-boot", 0, 0.1)
+    processMap['k-boot'] = kernel
+    base_ts = False
+    max_ts = 0
+    for line in file.read().decode('utf-8').split('\n'):
+        t = timestamp_re.match (line)
+        if t is None:
+#                       print "duff timestamp " + line
+            continue
+
+        time_ms = float (t.group(1)) * 1000
+        # looks like we may have a huge diff after the clock
+        # has been set up. This could lead to huge graph:
+        # so huge we will be killed by the OOM.
+        # So instead of using the plain timestamp we will
+        # use a delta to first one and skip the first one
+        # for convenience
+        if max_ts == 0 and not base_ts and time_ms > 1000:
+            base_ts = time_ms
+            continue
+        max_ts = max(time_ms, max_ts)
+        if base_ts:
+#                       print "fscked clock: used %f instead of %f" % (time_ms - base_ts, time_ms)
+            time_ms -= base_ts
+        m = split_re.match (t.group(2))
+
+        if m is None:
+            continue
+#               print "match: '%s'" % (m.group(1))
+        type = m.group(1)
+        func = m.group(2)
+        rest = m.group(3)
+
+        if t.group(2).startswith ('Write protecting the') or \
+           t.group(2).startswith ('Freeing unused kernel memory'):
+            kernel.duration = time_ms / 10
+            continue
+
+#               print "foo: '%s' '%s' '%s'" % (type, func, rest)
+        if type == "calling":
+            ppid = kernel.pid
+            p = re.match ("\@ (\d+)", rest)
+            if p is not None:
+                ppid = float (p.group(1)) // 1000
+#                               print "match: '%s' ('%g') at '%s'" % (func, ppid, time_ms)
+            name = func.split ('+', 1) [0]
+            idx += inc
+            processMap[func] = Process(writer, ppid + idx, name, ppid, time_ms / 10)
+        elif type == "initcall":
+#                       print "finished: '%s' at '%s'" % (func, time_ms)
+            if func in processMap:
+                process = processMap[func]
+                process.duration = (time_ms / 10) - process.start_time
+            else:
+                print("corrupted init call for %s" % (func))
+
+        elif type == "async_waiting" or type == "async_continuing":
+            continue # ignore
+
+    return processMap.values()
+
+#
+# Parse binary pacct accounting file output if we have one
+# cf. /usr/include/linux/acct.h
+#
+def _parse_pacct(writer, file):
+    # read LE int32
+    def _read_le_int32(file):
+        byts = file.read(4)
+        return (ord(byts[0]))       | (ord(byts[1]) << 8) | \
+               (ord(byts[2]) << 16) | (ord(byts[3]) << 24)
+
+    parent_map = {}
+    parent_map[0] = 0
+    while file.read(1) != "": # ignore flags
+        ver = file.read(1)
+        if ord(ver) < 3:
+            print("Invalid version 0x%x" % (ord(ver)))
+            return None
+
+        file.seek (14, 1)     # user, group etc.
+        pid = _read_le_int32 (file)
+        ppid = _read_le_int32 (file)
+#               print "Parent of %d is %d" % (pid, ppid)
+        parent_map[pid] = ppid
+        file.seek (4 + 4 + 16, 1) # timings
+        file.seek (16, 1)         # acct_comm
+    return parent_map
+
+def _parse_paternity_log(writer, file):
+    parent_map = {}
+    parent_map[0] = 0
+    for line in file.read().decode('utf-8').split('\n'):
+        if not line:
+            continue
+        elems = line.split(' ') # <Child> <Parent>
+        if len (elems) >= 2:
+#                       print "paternity of %d is %d" % (int(elems[0]), int(elems[1]))
+            parent_map[int(elems[0])] = int(elems[1])
+        else:
+            print("Odd paternity line '%s'" % (line))
+    return parent_map
+
+def _parse_cmdline_log(writer, file):
+    cmdLines = {}
+    for block in file.read().decode('utf-8').split('\n\n'):
+        lines = block.split('\n')
+        if len (lines) >= 3:
+#                       print "Lines '%s'" % (lines[0])
+            pid = int (lines[0])
+            values = {}
+            values['exe'] = lines[1].lstrip(':')
+            args = lines[2].lstrip(':').split('\0')
+            args.pop()
+            values['args'] = args
+            cmdLines[pid] = values
+    return cmdLines
+
+def get_num_cpus(headers):
+    """Get the number of CPUs from the system.cpu header property. As the
+    CPU utilization graphs are relative, the number of CPUs currently makes
+    no difference."""
+    if headers is None:
+        return 1
+    if headers.get("system.cpu.num"):
+        return max (int (headers.get("system.cpu.num")), 1)
+    cpu_model = headers.get("system.cpu")
+    if cpu_model is None:
+        return 1
+    mat = re.match(".*\\((\\d+)\\)", cpu_model)
+    if mat is None:
+        return 1
+    return max (int(mat.group(1)), 1)
+
+def _do_parse(writer, state, filename, file):
+    writer.info("parsing '%s'" % filename)
+    t1 = clock()
+    paths = filename.split("/")
+    task = paths[-1]
+    pn = paths[-2]
+    start = None
+    end = None
+    for line in file:
+        if line.startswith("Started:"):
+            start = int(float(line.split()[-1]))
+        elif line.startswith("Ended:"):
+            end = int(float(line.split()[-1]))
+    if start and end:
+        state.add_process(pn + ":" + task, start, end)
+    t2 = clock()
+    writer.info("  %s seconds" % str(t2-t1))
+    return state
+
+def parse_file(writer, state, filename):
+    if state.filename is None:
+        state.filename = filename
+    basename = os.path.basename(filename)
+    with open(filename, "rb") as file:
+        return _do_parse(writer, state, filename, file)
+
+def parse_paths(writer, state, paths):
+    for path in paths:
+        if state.filename is None:
+            state.filename = path
+        root, extension = os.path.splitext(path)
+        if not(os.path.exists(path)):
+            writer.warn("warning: path '%s' does not exist, ignoring." % path)
+            continue
+        #state.filename = path
+        if os.path.isdir(path):
+            files = sorted([os.path.join(path, f) for f in os.listdir(path)])
+            state = parse_paths(writer, state, files)
+        elif extension in [".tar", ".tgz", ".gz"]:
+            if extension == ".gz":
+                root, extension = os.path.splitext(root)
+                if extension != ".tar":
+                    writer.warn("warning: can only handle zipped tar files, not zipped '%s'-files; ignoring" % extension)
+                    continue
+            tf = None
+            try:
+                writer.status("parsing '%s'" % path)
+                tf = tarfile.open(path, 'r:*')
+                for name in tf.getnames():
+                    state = _do_parse(writer, state, name, tf.extractfile(name))
+            except tarfile.ReadError as error:
+                raise ParseError("error: could not read tarfile '%s': %s." % (path, error))
+            finally:
+                if tf != None:
+                    tf.close()
+        else:
+            state = parse_file(writer, state, path)
+    return state
+
+def split_res(res, options):
+    """ Split the res into n pieces """
+    res_list = []
+    if options.num > 1:
+        s_list = sorted(res.start.keys())
+        frag_size = len(s_list) / float(options.num)
+        # Need the top value
+        if frag_size > int(frag_size):
+            frag_size = int(frag_size + 1)
+        else:
+            frag_size = int(frag_size)
+
+        start = 0
+        end = frag_size
+        while start < end:
+            state = Trace(None, [], None)
+            if options.full_time:
+                state.min = min(res.start.keys())
+                state.max = max(res.end.keys())
+            for i in range(start, end):
+                # Add this line for reference
+                #state.add_process(pn + ":" + task, start, end)
+                for p in res.start[s_list[i]]:
+                    state.add_process(p, s_list[i], res.processes[p][1])
+            start = end
+            end = end + frag_size
+            if end > len(s_list):
+                end = len(s_list)
+            res_list.append(state)
+    else:
+        res_list.append(res)
+    return res_list
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