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8212612: Add documentation about Arguments::_exit_hook

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Reviewed-by: hseigel, dlong, dholmes
This commit is contained in:
Ioi Lam 2018-10-17 21:51:00 -07:00
parent d63acb557c
commit c86ba29693
3 changed files with 19 additions and 2 deletions
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3
src/hotspot/share/runtime/arguments.cpp
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@ -106,6 +106,9 @@ char* Arguments::SharedArchivePath = NULL;
AgentLibraryList Arguments::_libraryList;
AgentLibraryList Arguments::_agentList;
// These are not set by the JDK's built-in launchers, but they can be set by
// programs that embed the JVM using JNI_CreateJavaVM. See comments around
// JavaVMOption in jni.h.
abort_hook_t Arguments::_abort_hook = NULL;
exit_hook_t Arguments::_exit_hook = NULL;
vfprintf_hook_t Arguments::_vfprintf_hook = NULL;

2
src/hotspot/share/runtime/arguments.hpp
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@ -36,7 +36,7 @@
// Arguments parses the command line and recognizes options
// Invocation API hook typedefs (these should really be defined in jni.hpp)
// Invocation API hook typedefs (these should really be defined in jni.h)
extern "C" {
typedef void (JNICALL *abort_hook_t)(void);
typedef void (JNICALL *exit_hook_t)(jint code);

16
src/java.base/share/native/include/jni.h
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@ -1,5 +1,5 @@
/*
* Copyright (c) 1996, 2016, Oracle and/or its affiliates. All rights reserved.
* Copyright (c) 1996, 2018, Oracle and/or its affiliates. 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
@ -1871,6 +1871,20 @@ struct JNIEnv_ {
#endif /* __cplusplus */
};
/*
* optionString may be any option accepted by the JVM, or one of the
* following:
*
* -D<name>=<value> Set a system property.
* -verbose[:class|gc|jni] Enable verbose output, comma-separated. E.g.
* "-verbose:class" or "-verbose:gc,class"
* Standard names include: gc, class, and jni.
* All nonstandard (VM-specific) names must begin
* with "X".
* vfprintf extraInfo is a pointer to the vfprintf hook.
* exit extraInfo is a pointer to the exit hook.
* abort extraInfo is a pointer to the abort hook.
*/
typedef struct JavaVMOption {
char *optionString;
void *extraInfo;