sim: remove temporary files and socket

migen/sim/generic.py

@@ -69,10 +69,13 @@ def __init__(self, fragment, sim_runner, top_level=None, sockaddr="simsocket"):
 			rst_signal=rst_signal,
 			return_ns=True)
 
-		sim_runner.start(c_top, c_fragment)
-		self.ipc.accept()
 		self.cycle_counter = 0
 		self.interrupt = False
+
+		self.sim_runner = sim_runner
+		self.sim_runner.start(c_top, c_fragment)
+		self.ipc.accept()
+
 		self.fragment.call_sim(self, 0)
 		self.ipc.send(MessageGo())
 

migen/sim/icarus.py

@@ -1,21 +1,31 @@
 import subprocess
+import os
 
 def _str2file(filename, contents):
 	f = open(filename, "w")
 	f.write(contents)
 	f.close()
 
 class Runner:
-	def __init__(self, top_file="migensim_top.v", dut_file="migensim_dut.v", extra_files=None, vvp_file=None):
+	def __init__(self, extra_files=None, top_file="migensim_top.v", dut_file="migensim_dut.v", vvp_file=None, keep_files=False):
 		if extra_files is None: extra_files = []
 		if vvp_file is None: vvp_file = dut_file + "vp"
+		self.extra_files = extra_files
 		self.top_file = top_file
 		self.dut_file = dut_file
-		self.extra_files = extra_files
 		self.vvp_file = vvp_file
+		self.keep_files = keep_files
 
 	def start(self, c_top, c_dut):
 		_str2file(self.top_file, c_top)
 		_str2file(self.dut_file, c_dut)
 		subprocess.check_call(["iverilog", "-o", self.vvp_file, self.top_file, self.dut_file] + self.extra_files)
 		subprocess.Popen(["vvp", "-mmigensim", self.vvp_file])
+
+	def __del__(self):
+		if not self.keep_files:
+			for f in [self.top_file, self.dut_file, self.vvp_file]:
+				try:
+					os.remove(f)
+				except OSError:
+					pass