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author | upstream source tree <ports@midipix.org> | 2015-03-15 20:14:05 -0400 |
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committer | upstream source tree <ports@midipix.org> | 2015-03-15 20:14:05 -0400 |
commit | 554fd8c5195424bdbcabf5de30fdc183aba391bd (patch) | |
tree | 976dc5ab7fddf506dadce60ae936f43f58787092 /libjava/gnu/gcj/jvmti/Breakpoint.java | |
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Diffstat (limited to 'libjava/gnu/gcj/jvmti/Breakpoint.java')
-rw-r--r-- | libjava/gnu/gcj/jvmti/Breakpoint.java | 73 |
1 files changed, 73 insertions, 0 deletions
diff --git a/libjava/gnu/gcj/jvmti/Breakpoint.java b/libjava/gnu/gcj/jvmti/Breakpoint.java new file mode 100644 index 000000000..00b325aec --- /dev/null +++ b/libjava/gnu/gcj/jvmti/Breakpoint.java @@ -0,0 +1,73 @@ +// Breakpoint.java - a base class for interpreter breakpoints + +/* Copyright (C) 2006, 2007 Free Software Foundation + + This file is part of libgcj. + +This software is copyrighted work licensed under the terms of the +Libgcj License. Please consult the file "LIBGCJ_LICENSE" for +details. */ + +package gnu.gcj.jvmti; + +import gnu.gcj.RawDataManaged; + +/** + * Base class representing a type of breakpoint in the interpreter. + * This class deals with saving insns and installing and + * uninstalling insns in the interpreter for all breakpoint classes. + * + * @author Keith Seitz (keiths@redhat.com) + */ +public abstract class Breakpoint +{ + // Location of this breakpoint + protected long method; + protected long location; + + // The original instruction that this breakpoint replaced + private RawDataManaged data; + + /** + * Constructs a new Breakpoint + * + * @param method the method in which to set the breakpoint + * @param location the location at which to set the breakpoint + */ + public Breakpoint (long method, long location) + { + this.method = method; + this.location = location; + } + + public Breakpoint () + { + } + + private native void _save_insn (); + + /** + * Installs the breakpoint into the interpreter + */ + public native void install (); + + /** + * Removes the breakpoint from the interpreter, re-installing + * the original instruction. + */ + public native void remove (); + + /** + * Returns the original instruction at the location where + * this breakpoint was set + */ + public RawDataManaged getInsn () + { + return data; + } + + /** + * Execute the actions of this breakpoint + */ + public abstract void execute (); +} |