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perf scripts python: exported-sql-viewer.py: Add ability to display all the database tables
Displaying all the database tables can help make the database easier to understand. Committer testing: Opened all the tables, even the sqlite master table, which I selected everything and used control+C, lets see if it works... CREATE VIEW threads_view AS SELECT id,machine_id,(SELECT host_or_guest FROM machines_view WHERE id = machine_id) AS host_or_guest,process_id,pid,tid FROM threads Humm, nope, just one of the cells got copied, even with everything selected :-) Anyway, works as advertised, useful for perusing the data. Signed-off-by: Adrian Hunter <adrian.hunter@intel.com> Tested-by: Arnaldo Carvalho de Melo <acme@redhat.com> Cc: Andi Kleen <ak@linux.intel.com> Cc: Jiri Olsa <jolsa@redhat.com> Link: http://lkml.kernel.org/r/20181001062853.28285-17-adrian.hunter@intel.com Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
This commit is contained in:
Adrian Hunter
Arnaldo Carvalho de Melo
parent
82f68e2898
commit
8392b74b57
@ -50,10 +50,15 @@ import sys
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import weakref
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import threading
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import string
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import cPickle
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import re
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import os
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from PySide.QtCore import *
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from PySide.QtGui import *
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from PySide.QtSql import *
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from decimal import *
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from ctypes import *
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from multiprocessing import Process, Array, Value, Event
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# Data formatting helpers
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@ -146,6 +151,68 @@ class TreeModel(QAbstractItemModel):
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def DisplayData(self, item, index):
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return item.getData(index.column())
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def FetchIfNeeded(self, row):
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if row > self.last_row_read:
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self.last_row_read = row
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if row + 10 >= self.root.child_count:
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self.fetcher.Fetch(glb_chunk_sz)
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def columnAlignment(self, column):
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return Qt.AlignLeft
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def columnFont(self, column):
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return None
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def data(self, index, role):
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if role == Qt.TextAlignmentRole:
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return self.columnAlignment(index.column())
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if role == Qt.FontRole:
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return self.columnFont(index.column())
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if role != Qt.DisplayRole:
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return None
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item = index.internalPointer()
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return self.DisplayData(item, index)
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# Table data model
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class TableModel(QAbstractTableModel):
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def __init__(self, parent=None):
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super(TableModel, self).__init__(parent)
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self.child_count = 0
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self.child_items = []
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self.last_row_read = 0
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def Item(self, parent):
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if parent.isValid():
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return parent.internalPointer()
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else:
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return self
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def rowCount(self, parent):
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return self.child_count
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def headerData(self, section, orientation, role):
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if role == Qt.TextAlignmentRole:
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return self.columnAlignment(section)
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if role != Qt.DisplayRole:
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return None
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if orientation != Qt.Horizontal:
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return None
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return self.columnHeader(section)
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def index(self, row, column, parent):
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return self.createIndex(row, column, self.child_items[row])
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def DisplayData(self, item, index):
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return item.getData(index.column())
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def FetchIfNeeded(self, row):
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if row > self.last_row_read:
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self.last_row_read = row
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if row + 10 >= self.child_count:
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self.fetcher.Fetch(glb_chunk_sz)
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def columnAlignment(self, column):
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return Qt.AlignLeft
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@ -620,6 +687,601 @@ class CallGraphWindow(QMdiSubWindow):
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if not found:
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self.find_bar.NotFound()
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# Child data item finder
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class ChildDataItemFinder():
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def __init__(self, root):
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self.root = root
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self.value, self.direction, self.pattern, self.last_value, self.last_pattern = (None,) * 5
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self.rows = []
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self.pos = 0
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def FindSelect(self):
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self.rows = []
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if self.pattern:
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pattern = re.compile(self.value)
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for child in self.root.child_items:
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for column_data in child.data:
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if re.search(pattern, str(column_data)) is not None:
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self.rows.append(child.row)
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break
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else:
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for child in self.root.child_items:
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for column_data in child.data:
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if self.value in str(column_data):
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self.rows.append(child.row)
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break
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def FindValue(self):
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self.pos = 0
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if self.last_value != self.value or self.pattern != self.last_pattern:
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self.FindSelect()
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if not len(self.rows):
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return -1
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return self.rows[self.pos]
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def FindThread(self):
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if self.direction == 0 or self.value != self.last_value or self.pattern != self.last_pattern:
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row = self.FindValue()
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elif len(self.rows):
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if self.direction > 0:
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self.pos += 1
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if self.pos >= len(self.rows):
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self.pos = 0
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else:
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self.pos -= 1
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if self.pos < 0:
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self.pos = len(self.rows) - 1
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row = self.rows[self.pos]
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else:
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row = -1
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return (True, row)
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def Find(self, value, direction, pattern, context, callback):
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self.value, self.direction, self.pattern, self.last_value, self.last_pattern = (value, direction,pattern, self.value, self.pattern)
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# Use a thread so the UI is not blocked
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thread = Thread(self.FindThread)
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thread.done.connect(lambda row, t=thread, c=callback: self.FindDone(t, c, row), Qt.QueuedConnection)
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thread.start()
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def FindDone(self, thread, callback, row):
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callback(row)
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# Number of database records to fetch in one go
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glb_chunk_sz = 10000
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# size of pickled integer big enough for record size
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glb_nsz = 8
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# Background process for SQL data fetcher
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class SQLFetcherProcess():
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def __init__(self, dbref, sql, buffer, head, tail, fetch_count, fetching_done, process_target, wait_event, fetched_event, prep):
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# Need a unique connection name
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conn_name = "SQLFetcher" + str(os.getpid())
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self.db, dbname = dbref.Open(conn_name)
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self.sql = sql
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self.buffer = buffer
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self.head = head
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self.tail = tail
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self.fetch_count = fetch_count
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self.fetching_done = fetching_done
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self.process_target = process_target
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self.wait_event = wait_event
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self.fetched_event = fetched_event
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self.prep = prep
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self.query = QSqlQuery(self.db)
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self.query_limit = 0 if "$$last_id$$" in sql else 2
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self.last_id = -1
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self.fetched = 0
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self.more = True
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self.local_head = self.head.value
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self.local_tail = self.tail.value
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def Select(self):
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if self.query_limit:
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if self.query_limit == 1:
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return
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self.query_limit -= 1
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stmt = self.sql.replace("$$last_id$$", str(self.last_id))
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QueryExec(self.query, stmt)
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def Next(self):
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if not self.query.next():
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self.Select()
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if not self.query.next():
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return None
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self.last_id = self.query.value(0)
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return self.prep(self.query)
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def WaitForTarget(self):
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while True:
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self.wait_event.clear()
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target = self.process_target.value
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if target > self.fetched or target < 0:
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break
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self.wait_event.wait()
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return target
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def HasSpace(self, sz):
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if self.local_tail <= self.local_head:
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space = len(self.buffer) - self.local_head
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if space > sz:
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return True
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if space >= glb_nsz:
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# Use 0 (or space < glb_nsz) to mean there is no more at the top of the buffer
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nd = cPickle.dumps(0, cPickle.HIGHEST_PROTOCOL)
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self.buffer[self.local_head : self.local_head + len(nd)] = nd
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self.local_head = 0
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if self.local_tail - self.local_head > sz:
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return True
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return False
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def WaitForSpace(self, sz):
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if self.HasSpace(sz):
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return
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while True:
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self.wait_event.clear()
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self.local_tail = self.tail.value
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if self.HasSpace(sz):
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return
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self.wait_event.wait()
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def AddToBuffer(self, obj):
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d = cPickle.dumps(obj, cPickle.HIGHEST_PROTOCOL)
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n = len(d)
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nd = cPickle.dumps(n, cPickle.HIGHEST_PROTOCOL)
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sz = n + glb_nsz
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self.WaitForSpace(sz)
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pos = self.local_head
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self.buffer[pos : pos + len(nd)] = nd
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self.buffer[pos + glb_nsz : pos + sz] = d
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self.local_head += sz
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def FetchBatch(self, batch_size):
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fetched = 0
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while batch_size > fetched:
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obj = self.Next()
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if obj is None:
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self.more = False
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break
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self.AddToBuffer(obj)
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fetched += 1
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if fetched:
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self.fetched += fetched
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with self.fetch_count.get_lock():
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self.fetch_count.value += fetched
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self.head.value = self.local_head
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self.fetched_event.set()
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def Run(self):
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while self.more:
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target = self.WaitForTarget()
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if target < 0:
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break
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batch_size = min(glb_chunk_sz, target - self.fetched)
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self.FetchBatch(batch_size)
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self.fetching_done.value = True
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self.fetched_event.set()
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def SQLFetcherFn(*x):
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process = SQLFetcherProcess(*x)
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process.Run()
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# SQL data fetcher
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class SQLFetcher(QObject):
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done = Signal(object)
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def __init__(self, glb, sql, prep, process_data, parent=None):
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super(SQLFetcher, self).__init__(parent)
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self.process_data = process_data
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self.more = True
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self.target = 0
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self.last_target = 0
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self.fetched = 0
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self.buffer_size = 16 * 1024 * 1024
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self.buffer = Array(c_char, self.buffer_size, lock=False)
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self.head = Value(c_longlong)
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self.tail = Value(c_longlong)
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self.local_tail = 0
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self.fetch_count = Value(c_longlong)
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self.fetching_done = Value(c_bool)
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self.last_count = 0
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self.process_target = Value(c_longlong)
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self.wait_event = Event()
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self.fetched_event = Event()
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glb.AddInstanceToShutdownOnExit(self)
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self.process = Process(target=SQLFetcherFn, args=(glb.dbref, sql, self.buffer, self.head, self.tail, self.fetch_count, self.fetching_done, self.process_target, self.wait_event, self.fetched_event, prep))
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self.process.start()
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self.thread = Thread(self.Thread)
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self.thread.done.connect(self.ProcessData, Qt.QueuedConnection)
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self.thread.start()
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def Shutdown(self):
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# Tell the thread and process to exit
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self.process_target.value = -1
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self.wait_event.set()
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self.more = False
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self.fetching_done.value = True
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self.fetched_event.set()
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def Thread(self):
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if not self.more:
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return True, 0
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while True:
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self.fetched_event.clear()
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fetch_count = self.fetch_count.value
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if fetch_count != self.last_count:
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break
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if self.fetching_done.value:
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self.more = False
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return True, 0
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self.fetched_event.wait()
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count = fetch_count - self.last_count
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self.last_count = fetch_count
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self.fetched += count
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return False, count
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def Fetch(self, nr):
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if not self.more:
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# -1 inidcates there are no more
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return -1
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result = self.fetched
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extra = result + nr - self.target
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if extra > 0:
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self.target += extra
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# process_target < 0 indicates shutting down
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if self.process_target.value >= 0:
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self.process_target.value = self.target
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self.wait_event.set()
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return result
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def RemoveFromBuffer(self):
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pos = self.local_tail
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if len(self.buffer) - pos < glb_nsz:
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pos = 0
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n = cPickle.loads(self.buffer[pos : pos + glb_nsz])
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if n == 0:
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pos = 0
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n = cPickle.loads(self.buffer[0 : glb_nsz])
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pos += glb_nsz
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obj = cPickle.loads(self.buffer[pos : pos + n])
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self.local_tail = pos + n
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return obj
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def ProcessData(self, count):
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for i in xrange(count):
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obj = self.RemoveFromBuffer()
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self.process_data(obj)
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self.tail.value = self.local_tail
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self.wait_event.set()
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self.done.emit(count)
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# Fetch more records bar
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class FetchMoreRecordsBar():
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def __init__(self, model, parent):
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self.model = model
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self.label = QLabel("Number of records (x " + "{:,}".format(glb_chunk_sz) + ") to fetch:")
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self.label.setSizePolicy(QSizePolicy.Fixed, QSizePolicy.Fixed)
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self.fetch_count = QSpinBox()
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self.fetch_count.setRange(1, 1000000)
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self.fetch_count.setValue(10)
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self.fetch_count.setSizePolicy(QSizePolicy.Fixed, QSizePolicy.Fixed)
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self.fetch = QPushButton("Go!")
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self.fetch.setSizePolicy(QSizePolicy.Fixed, QSizePolicy.Fixed)
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self.fetch.released.connect(self.FetchMoreRecords)
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self.progress = QProgressBar()
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self.progress.setRange(0, 100)
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self.progress.hide()
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self.done_label = QLabel("All records fetched")
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self.done_label.hide()
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self.spacer = QLabel("")
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self.close_button = QToolButton()
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self.close_button.setIcon(parent.style().standardIcon(QStyle.SP_DockWidgetCloseButton))
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self.close_button.released.connect(self.Deactivate)
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self.hbox = QHBoxLayout()
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self.hbox.setContentsMargins(0, 0, 0, 0)
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self.hbox.addWidget(self.label)
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self.hbox.addWidget(self.fetch_count)
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self.hbox.addWidget(self.fetch)
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self.hbox.addWidget(self.spacer)
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self.hbox.addWidget(self.progress)
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self.hbox.addWidget(self.done_label)
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self.hbox.addWidget(self.close_button)
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self.bar = QWidget()
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self.bar.setLayout(self.hbox);
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self.bar.show()
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self.in_progress = False
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self.model.progress.connect(self.Progress)
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self.done = False
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if not model.HasMoreRecords():
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self.Done()
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def Widget(self):
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return self.bar
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def Activate(self):
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self.bar.show()
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self.fetch.setFocus()
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def Deactivate(self):
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self.bar.hide()
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def Enable(self, enable):
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self.fetch.setEnabled(enable)
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self.fetch_count.setEnabled(enable)
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def Busy(self):
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self.Enable(False)
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self.fetch.hide()
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self.spacer.hide()
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self.progress.show()
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def Idle(self):
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self.in_progress = False
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self.Enable(True)
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self.progress.hide()
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self.fetch.show()
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self.spacer.show()
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def Target(self):
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return self.fetch_count.value() * glb_chunk_sz
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def Done(self):
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self.done = True
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self.Idle()
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self.label.hide()
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self.fetch_count.hide()
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self.fetch.hide()
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self.spacer.hide()
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self.done_label.show()
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def Progress(self, count):
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if self.in_progress:
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if count:
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percent = ((count - self.start) * 100) / self.Target()
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if percent >= 100:
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self.Idle()
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else:
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self.progress.setValue(percent)
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if not count:
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# Count value of zero means no more records
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self.Done()
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def FetchMoreRecords(self):
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if self.done:
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return
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self.progress.setValue(0)
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self.Busy()
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self.in_progress = True
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self.start = self.model.FetchMoreRecords(self.Target())
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# SQL data preparation
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def SQLTableDataPrep(query, count):
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data = []
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for i in xrange(count):
|
||||
data.append(query.value(i))
|
||||
return data
|
||||
|
||||
# SQL table data model item
|
||||
|
||||
class SQLTableItem():
|
||||
|
||||
def __init__(self, row, data):
|
||||
self.row = row
|
||||
self.data = data
|
||||
|
||||
def getData(self, column):
|
||||
return self.data[column]
|
||||
|
||||
# SQL table data model
|
||||
|
||||
class SQLTableModel(TableModel):
|
||||
|
||||
progress = Signal(object)
|
||||
|
||||
def __init__(self, glb, sql, column_count, parent=None):
|
||||
super(SQLTableModel, self).__init__(parent)
|
||||
self.glb = glb
|
||||
self.more = True
|
||||
self.populated = 0
|
||||
self.fetcher = SQLFetcher(glb, sql, lambda x, y=column_count: SQLTableDataPrep(x, y), self.AddSample)
|
||||
self.fetcher.done.connect(self.Update)
|
||||
self.fetcher.Fetch(glb_chunk_sz)
|
||||
|
||||
def DisplayData(self, item, index):
|
||||
self.FetchIfNeeded(item.row)
|
||||
return item.getData(index.column())
|
||||
|
||||
def AddSample(self, data):
|
||||
child = SQLTableItem(self.populated, data)
|
||||
self.child_items.append(child)
|
||||
self.populated += 1
|
||||
|
||||
def Update(self, fetched):
|
||||
if not fetched:
|
||||
self.more = False
|
||||
self.progress.emit(0)
|
||||
child_count = self.child_count
|
||||
count = self.populated - child_count
|
||||
if count > 0:
|
||||
parent = QModelIndex()
|
||||
self.beginInsertRows(parent, child_count, child_count + count - 1)
|
||||
self.insertRows(child_count, count, parent)
|
||||
self.child_count += count
|
||||
self.endInsertRows()
|
||||
self.progress.emit(self.child_count)
|
||||
|
||||
def FetchMoreRecords(self, count):
|
||||
current = self.child_count
|
||||
if self.more:
|
||||
self.fetcher.Fetch(count)
|
||||
else:
|
||||
self.progress.emit(0)
|
||||
return current
|
||||
|
||||
def HasMoreRecords(self):
|
||||
return self.more
|
||||
|
||||
# SQL automatic table data model
|
||||
|
||||
class SQLAutoTableModel(SQLTableModel):
|
||||
|
||||
def __init__(self, glb, table_name, parent=None):
|
||||
sql = "SELECT * FROM " + table_name + " WHERE id > $$last_id$$ ORDER BY id LIMIT " + str(glb_chunk_sz)
|
||||
if table_name == "comm_threads_view":
|
||||
# For now, comm_threads_view has no id column
|
||||
sql = "SELECT * FROM " + table_name + " WHERE comm_id > $$last_id$$ ORDER BY comm_id LIMIT " + str(glb_chunk_sz)
|
||||
self.column_headers = []
|
||||
query = QSqlQuery(glb.db)
|
||||
if glb.dbref.is_sqlite3:
|
||||
QueryExec(query, "PRAGMA table_info(" + table_name + ")")
|
||||
while query.next():
|
||||
self.column_headers.append(query.value(1))
|
||||
if table_name == "sqlite_master":
|
||||
sql = "SELECT * FROM " + table_name
|
||||
else:
|
||||
if table_name[:19] == "information_schema.":
|
||||
sql = "SELECT * FROM " + table_name
|
||||
select_table_name = table_name[19:]
|
||||
schema = "information_schema"
|
||||
else:
|
||||
select_table_name = table_name
|
||||
schema = "public"
|
||||
QueryExec(query, "SELECT column_name FROM information_schema.columns WHERE table_schema = '" + schema + "' and table_name = '" + select_table_name + "'")
|
||||
while query.next():
|
||||
self.column_headers.append(query.value(0))
|
||||
super(SQLAutoTableModel, self).__init__(glb, sql, len(self.column_headers), parent)
|
||||
|
||||
def columnCount(self, parent=None):
|
||||
return len(self.column_headers)
|
||||
|
||||
def columnHeader(self, column):
|
||||
return self.column_headers[column]
|
||||
|
||||
# Base class for custom ResizeColumnsToContents
|
||||
|
||||
class ResizeColumnsToContentsBase(QObject):
|
||||
|
||||
def __init__(self, parent=None):
|
||||
super(ResizeColumnsToContentsBase, self).__init__(parent)
|
||||
|
||||
def ResizeColumnToContents(self, column, n):
|
||||
# Using the view's resizeColumnToContents() here is extrememly slow
|
||||
# so implement a crude alternative
|
||||
font = self.view.font()
|
||||
metrics = QFontMetrics(font)
|
||||
max = 0
|
||||
for row in xrange(n):
|
||||
val = self.data_model.child_items[row].data[column]
|
||||
len = metrics.width(str(val) + "MM")
|
||||
max = len if len > max else max
|
||||
val = self.data_model.columnHeader(column)
|
||||
len = metrics.width(str(val) + "MM")
|
||||
max = len if len > max else max
|
||||
self.view.setColumnWidth(column, max)
|
||||
|
||||
def ResizeColumnsToContents(self):
|
||||
n = min(self.data_model.child_count, 100)
|
||||
if n < 1:
|
||||
# No data yet, so connect a signal to notify when there is
|
||||
self.data_model.rowsInserted.connect(self.UpdateColumnWidths)
|
||||
return
|
||||
columns = self.data_model.columnCount()
|
||||
for i in xrange(columns):
|
||||
self.ResizeColumnToContents(i, n)
|
||||
|
||||
def UpdateColumnWidths(self, *x):
|
||||
# This only needs to be done once, so disconnect the signal now
|
||||
self.data_model.rowsInserted.disconnect(self.UpdateColumnWidths)
|
||||
self.ResizeColumnsToContents()
|
||||
|
||||
# Table window
|
||||
|
||||
class TableWindow(QMdiSubWindow, ResizeColumnsToContentsBase):
|
||||
|
||||
def __init__(self, glb, table_name, parent=None):
|
||||
super(TableWindow, self).__init__(parent)
|
||||
|
||||
self.data_model = LookupCreateModel(table_name + " Table", lambda: SQLAutoTableModel(glb, table_name))
|
||||
|
||||
self.model = QSortFilterProxyModel()
|
||||
self.model.setSourceModel(self.data_model)
|
||||
|
||||
self.view = QTableView()
|
||||
self.view.setModel(self.model)
|
||||
self.view.setEditTriggers(QAbstractItemView.NoEditTriggers)
|
||||
self.view.verticalHeader().setVisible(False)
|
||||
self.view.sortByColumn(-1, Qt.AscendingOrder)
|
||||
self.view.setSortingEnabled(True)
|
||||
|
||||
self.ResizeColumnsToContents()
|
||||
|
||||
self.find_bar = FindBar(self, self, True)
|
||||
|
||||
self.finder = ChildDataItemFinder(self.data_model)
|
||||
|
||||
self.fetch_bar = FetchMoreRecordsBar(self.data_model, self)
|
||||
|
||||
self.vbox = VBox(self.view, self.find_bar.Widget(), self.fetch_bar.Widget())
|
||||
|
||||
self.setWidget(self.vbox.Widget())
|
||||
|
||||
AddSubWindow(glb.mainwindow.mdi_area, self, table_name + " Table")
|
||||
|
||||
def Find(self, value, direction, pattern, context):
|
||||
self.view.setFocus()
|
||||
self.find_bar.Busy()
|
||||
self.finder.Find(value, direction, pattern, context, self.FindDone)
|
||||
|
||||
def FindDone(self, row):
|
||||
self.find_bar.Idle()
|
||||
if row >= 0:
|
||||
self.view.setCurrentIndex(self.model.index(row, 0, QModelIndex()))
|
||||
else:
|
||||
self.find_bar.NotFound()
|
||||
|
||||
# Table list
|
||||
|
||||
def GetTableList(glb):
|
||||
tables = []
|
||||
query = QSqlQuery(glb.db)
|
||||
if glb.dbref.is_sqlite3:
|
||||
QueryExec(query, "SELECT name FROM sqlite_master WHERE type IN ( 'table' , 'view' ) ORDER BY name")
|
||||
else:
|
||||
QueryExec(query, "SELECT table_name FROM information_schema.tables WHERE table_schema = 'public' AND table_type IN ( 'BASE TABLE' , 'VIEW' ) ORDER BY table_name")
|
||||
while query.next():
|
||||
tables.append(query.value(0))
|
||||
if glb.dbref.is_sqlite3:
|
||||
tables.append("sqlite_master")
|
||||
else:
|
||||
tables.append("information_schema.tables")
|
||||
tables.append("information_schema.views")
|
||||
tables.append("information_schema.columns")
|
||||
return tables
|
||||
|
||||
# Action Definition
|
||||
|
||||
def CreateAction(label, tip, callback, parent=None, shortcut=None):
|
||||
@ -779,12 +1441,15 @@ class MainWindow(QMainWindow):
|
||||
|
||||
edit_menu = menu.addMenu("&Edit")
|
||||
edit_menu.addAction(CreateAction("&Find...", "Find items", self.Find, self, QKeySequence.Find))
|
||||
edit_menu.addAction(CreateAction("Fetch &more records...", "Fetch more records", self.FetchMoreRecords, self, [QKeySequence(Qt.Key_F8)]))
|
||||
edit_menu.addAction(CreateAction("&Shrink Font", "Make text smaller", self.ShrinkFont, self, [QKeySequence("Ctrl+-")]))
|
||||
edit_menu.addAction(CreateAction("&Enlarge Font", "Make text bigger", self.EnlargeFont, self, [QKeySequence("Ctrl++")]))
|
||||
|
||||
reports_menu = menu.addMenu("&Reports")
|
||||
reports_menu.addAction(CreateAction("Context-Sensitive Call &Graph", "Create a new window containing a context-sensitive call graph", self.NewCallGraph, self))
|
||||
|
||||
self.TableMenu(GetTableList(glb), menu)
|
||||
|
||||
self.window_menu = WindowMenu(self.mdi_area, menu)
|
||||
|
||||
def Find(self):
|
||||
@ -795,6 +1460,14 @@ class MainWindow(QMainWindow):
|
||||
except:
|
||||
pass
|
||||
|
||||
def FetchMoreRecords(self):
|
||||
win = self.mdi_area.activeSubWindow()
|
||||
if win:
|
||||
try:
|
||||
win.fetch_bar.Activate()
|
||||
except:
|
||||
pass
|
||||
|
||||
def ShrinkFont(self):
|
||||
win = self.mdi_area.activeSubWindow()
|
||||
ShrinkFont(win.view)
|
||||
@ -803,9 +1476,17 @@ class MainWindow(QMainWindow):
|
||||
win = self.mdi_area.activeSubWindow()
|
||||
EnlargeFont(win.view)
|
||||
|
||||
def TableMenu(self, tables, menu):
|
||||
table_menu = menu.addMenu("&Tables")
|
||||
for table in tables:
|
||||
table_menu.addAction(CreateAction(table, "Create a new window containing a table view", lambda t=table: self.NewTableView(t), self))
|
||||
|
||||
def NewCallGraph(self):
|
||||
CallGraphWindow(self.glb, self)
|
||||
|
||||
def NewTableView(self, table_name):
|
||||
TableWindow(self.glb, table_name, self)
|
||||
|
||||
# Global data
|
||||
|
||||
class Glb():
|
||||
@ -816,6 +1497,18 @@ class Glb():
|
||||
self.dbname = dbname
|
||||
self.app = None
|
||||
self.mainwindow = None
|
||||
self.instances_to_shutdown_on_exit = weakref.WeakSet()
|
||||
|
||||
def AddInstanceToShutdownOnExit(self, instance):
|
||||
self.instances_to_shutdown_on_exit.add(instance)
|
||||
|
||||
# Shutdown any background processes or threads
|
||||
def ShutdownInstances(self):
|
||||
for x in self.instances_to_shutdown_on_exit:
|
||||
try:
|
||||
x.Shutdown()
|
||||
except:
|
||||
pass
|
||||
|
||||
# Database reference
|
||||
|
||||
@ -880,6 +1573,7 @@ def Main():
|
||||
glb.mainwindow = mainwindow
|
||||
mainwindow.show()
|
||||
err = app.exec_()
|
||||
glb.ShutdownInstances()
|
||||
db.close()
|
||||
sys.exit(err)
|
||||
|
||||
|
||||
Loading…
Reference in New Issue
Block a user