Author: Maciej Fijalkowski <fij...@gmail.com>
Branch: better-jit-hooks
Changeset: r49833:84c2db217151
Date: 2011-11-26 20:46 +0200
http://bitbucket.org/pypy/pypy/changeset/84c2db217151/
Log: a branch to experiment with some better JIT hooks
diff --git a/pypy/jit/codewriter/policy.py b/pypy/jit/codewriter/policy.py
--- a/pypy/jit/codewriter/policy.py
+++ b/pypy/jit/codewriter/policy.py
@@ -84,6 +84,14 @@
raise ValueError("access_directly on a function which we don't see
%s" % graph)
return res
+ def get_jit_portal(self):
+ """ Returns a None or an instance of pypy.rlib.jit.JitPortal
+ The portal methods are called for various special cases in the JIT
+ as a mean to give feedback to the user. Read JitPortal's docstring
+ for details.
+ """
+ return None
+
def contains_unsupported_variable_type(graph, supports_floats,
supports_longlong,
supports_singlefloats):
diff --git a/pypy/rlib/jit.py b/pypy/rlib/jit.py
--- a/pypy/rlib/jit.py
+++ b/pypy/rlib/jit.py
@@ -738,3 +738,12 @@
return hop.genop('jit_marker', vlist,
resulttype=lltype.Void)
+
+class JitPortal(object):
+ """ This is the main connector between the JIT and the interpreter.
+ Several methods on portal will be invoked at various stages of JIT running
+ like JIT loops compiled, aborts etc.
+
+ An instance of this class might be returned by the policy.get_jit_portal
+ method in order to function.
+ """
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