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6921352: JSR 292 needs its own deopt handler

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We need to introduce a new MH deopt handler so we can easily determine if the deopt happened at a MH call site or not.

Reviewed-by: never, jrose
This commit is contained in:
Christian Thalinger 2010-02-01 19:29:46 +01:00
parent 8cc63249e9
commit 918c7a2e33
15 changed files with 253 additions and 133 deletions
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12
hotspot/src/share/vm/asm/codeBuffer.hpp
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@ -1,5 +1,5 @@
/*
* Copyright 1997-2008 Sun Microsystems, Inc. All Rights Reserved.
* Copyright 1997-2010 Sun Microsystems, Inc. All Rights Reserved.
* DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
*
* This code is free software; you can redistribute it and/or modify it
@ -39,6 +39,7 @@ public:
Dtrace_trap = OSR_Entry, // dtrace probes can never have an OSR entry so reuse it
Exceptions, // Offset where exception handler lives
Deopt, // Offset where deopt handler lives
DeoptMH, // Offset where MethodHandle deopt handler lives
max_Entries };
// special value to note codeBlobs where profile (forte) stack walking is
@ -51,12 +52,13 @@ private:
public:
CodeOffsets() {
_values[Entry] = 0;
_values[Entry ] = 0;
_values[Verified_Entry] = 0;
_values[Frame_Complete] = frame_never_safe;
_values[OSR_Entry] = 0;
_values[Exceptions] = -1;
_values[Deopt] = -1;
_values[OSR_Entry ] = 0;
_values[Exceptions ] = -1;
_values[Deopt ] = -1;
_values[DeoptMH ] = -1;
}
int value(Entries e) { return _values[e]; }