From: Stefan Huber <shuber2@gmail.com>
Date: Mon, 2 Jun 2008 12:22:23 +0000 (+0200)
Subject: added functions for getting dbg replies
X-Git-Tag: v0.99.0~44
X-Git-Url: https://git.sthu.org/?p=pygdb.git;a=commitdiff_plain;h=65010f5074ddf1f3ccb7424aaec7ab78c2ede09d

added functions for getting dbg replies
---

diff --git a/DbgTerminal.py b/DbgTerminal.py
index cef0d27..88064db 100755
--- a/DbgTerminal.py
+++ b/DbgTerminal.py
@@ -2,16 +2,22 @@
 
 
 import select
+import string
 import sys
 import thread
 import threading
 import time
 import os
 import pty
+import Queue
 
 
 class DbgTerminal:
 
+	#Reply cache from debugger
+	dbgreplyqueue = Queue.Queue()
+
+
 	def __init__ (self, binary, gdbReadCallback, childReadCallback):
 
 		#Set some members
@@ -25,43 +31,41 @@ class DbgTerminal:
 
 	def __connect( self ):
 
+		#This function handles readings from the debugger
+		def gdbCb(str):
+			self.gdbReadCallback(str)
+			self.dbgreplyqueue.put(str)
 
 		#Open pseudo-terminal where to-be-debugged process reads/writes to
 		self.ptymaster, self.ptyslave = pty.openpty()
 		self.childout = os.fdopen(self.ptymaster, "r", 0)
 		self.childin = os.fdopen(self.ptymaster, "w", 0)
 
-		#Open the subprocess and get in- and out-streams
+		#Call gdb and get in- and out-streams to/from gdb
 		cmd = self.getCommand(self.binary)
 		self.gdbin, self.gdbout = os.popen4( cmd, bufsize=0)
 
-
 		#Set up a reading thread to gdb output
-		self.gdbReadThread =  self.ReadThread(self.gdbout, self.gdbReadCallback)
+		self.gdbReadThread =  self.ReadThread(self.gdbout, gdbCb)
 		self.gdbReadThread.start()
 
-		#Set up a reading thread to gdb output
+		#Set up a reading thread to childs output
 		self.childReadThread =  self.ReadThread(self.childout, self.childReadCallback)
 		self.childReadThread.start()
 
 		#Set up tty gdb-childs process
-		time.sleep(0.1)
 		self.sendSetTTY(os.ttyname(self.ptyslave))
-		time.sleep(0.1)
-
 
+	
 
-	def getCommand( self, binary ):
-		"""Get the command to execute"""
+	def getDbgReply(self):
 		raise NotImplementedError()
 
 
 	def iseof( self ):
 		"""Check if terminal is closed already"""
-
 		return self.gdbReadThread.eventFin.isSet()
 
-
 	def stop( self ):
 
 		if not self.stopped:
@@ -75,6 +79,10 @@ class DbgTerminal:
 			self.childReadThread.eventFin.wait(1)
 
 
+	def getCommand( self, binary ):
+		"""Get the command to execute"""
+		raise NotImplementedError()
+
 	def sendBreak(self, file, lineno):
 		raise NotImplementedError()
 
@@ -136,6 +144,9 @@ class DbgTerminal:
 
 class GdbTerminal (DbgTerminal):
 
+	gdbreply = ""
+
+
 	def getCommand( self, binary ):
 		return "gdb --fullname %s" % (binary,)
 
@@ -161,7 +172,32 @@ class GdbTerminal (DbgTerminal):
 		self.gdbin.write("quit\n")
 		DbgTerminal.stop(self)
 
+	def getDbgReply(self, timeout=None):
 
+		while True:
+			splits = self.gdbreply.split("\n")
+
+			#Need more data: If there is a single (gdb) entry, then
+			#there are at least two splits
+			if len(splits) <= 1:
+				try:
+					self.gdbreply += self.dbgreplyqueue.get(True, timeout)
+				except Queue.Empty:
+					return None
+			#Yeah there is data!
+			else:
+				self.gdbreply = string.join(splits[1:], "(gdb)")
+				return string.strip(splits[0])
+
+	def flushDbgReply(self):
+
+		try:
+			self.gdbreply = ""
+			#Remove all elements from queue
+			while True:
+				self.dbgreplyqueue.get(False)
+		except Queue.Empty:
+			pass
 
 if __name__ == "__main__":
 
@@ -173,13 +209,34 @@ if __name__ == "__main__":
 
 		term = GdbTerminal( "./main", tostdout, tostdout)
 		term.sendBreak("main.cpp", 13)
+		term.sendBreak("main.cpp", 14)
 		term.sendRun()
 		term.childin.write("1\n");
 		term.childin.write("2\n");
+
+		time.sleep(0.2)
+		term.flushDbgReply()
+		term.sendInspectVar("a+b")
+
+		term.sendContinue()
 		term.sendInspectVar("a+b")
 		term.sendContinue()
 
 
+		time.sleep(1)
+
+		print "reply >>>", term.getDbgReply(1)
+		print "reply >>>", term.getDbgReply(1)
+		print "reply >>>", term.getDbgReply(1)
+		print "reply >>>", term.getDbgReply(1)
+		print "reply >>>", term.getDbgReply(1)
+		print "reply >>>", term.getDbgReply(1)
+		print "reply >>>", term.getDbgReply(1)
+		print "reply >>>", term.getDbgReply(1)
+		print "reply >>>", term.getDbgReply(1)
+		print "reply >>>", term.getDbgReply(1)
+
+
 		while not term.iseof():
 
 			cmd = sys.stdin.readline()