Merge commit 'c2b0355b0de23f6ec83b5fa5be038bcce208e26f' as 'waflib'

1 files changed, 72 insertions, 0 deletions

diff --git a/waflib/extras/qnxnto.py b/waflib/extras/qnxnto.py
new file mode 100644
index 0000000..1158124
--- /dev/null
+++ b/waflib/extras/qnxnto.py
@@ -0,0 +1,72 @@
+#!/usr/bin/env python
+# encoding: utf-8
+# Jérôme Carretero 2011 (zougloub)
+# QNX neutrino compatibility functions
+
+import sys, os
+from waflib import Utils
+
+class Popen(object):
+	"""
+	Popen cannot work on QNX from a threaded program:
+	Forking in threads is not implemented in neutrino.
+
+	Python's os.popen / spawn / fork won't work when running in threads (they will if in the main program thread)
+
+	In waf, this happens mostly in build.
+	And the use cases can be replaced by os.system() calls.
+	"""
+	__slots__ = ["prog", "kw", "popen", "verbose"]
+	verbose = 0
+	def __init__(self, prog, **kw):
+		try:
+			self.prog = prog
+			self.kw = kw
+			self.popen = None
+			if Popen.verbose:
+				sys.stdout.write("Popen created: %r, kw=%r..." % (prog, kw))
+
+			do_delegate = kw.get('stdout') == -1 and kw.get('stderr') == -1
+			if do_delegate:
+				if Popen.verbose:
+					print("Delegating to real Popen")
+				self.popen = self.real_Popen(prog, **kw)
+			else:
+				if Popen.verbose:
+					print("Emulating")
+		except Exception as e:
+			if Popen.verbose:
+				print("Exception: %s" % e)
+			raise
+
+	def __getattr__(self, name):
+		if Popen.verbose:
+			sys.stdout.write("Getattr: %s..." % name)
+		if name in Popen.__slots__:
+			return object.__getattribute__(self, name)
+		else:
+			if self.popen is not None:
+				if Popen.verbose:
+					print("from Popen")
+				return getattr(self.popen, name)
+			else:
+				if name == "wait":
+					return self.emu_wait
+				else:
+					raise Exception("subprocess emulation: not implemented: %s" % name)
+
+	def emu_wait(self):
+		if Popen.verbose:
+			print("emulated wait (%r kw=%r)" % (self.prog, self.kw))
+		if isinstance(self.prog, str):
+			cmd = self.prog
+		else:
+			cmd = " ".join(self.prog)
+		if 'cwd' in self.kw:
+			cmd = 'cd "%s" && %s' % (self.kw['cwd'], cmd)
+		return os.system(cmd)
+
+if sys.platform == "qnx6":
+	Popen.real_Popen = Utils.subprocess.Popen
+	Utils.subprocess.Popen = Popen
+