jextractglue.c

/*******************************************************************************
 * Copyright (c) 1991, 2021 IBM Corp. and others
 *
 * This program and the accompanying materials are made available under
 * the terms of the Eclipse Public License 2.0 which accompanies this
 * distribution and is available at https://www.eclipse.org/legal/epl-2.0/
 * or the Apache License, Version 2.0 which accompanies this distribution and
 * is available at https://www.apache.org/licenses/LICENSE-2.0.
 *
 * This Source Code may also be made available under the following
 * Secondary Licenses when the conditions for such availability set
 * forth in the Eclipse Public License, v. 2.0 are satisfied: GNU
 * General Public License, version 2 with the GNU Classpath
 * Exception [1] and GNU General Public License, version 2 with the
 * OpenJDK Assembly Exception [2].
 *
 * [1] https://www.gnu.org/software/classpath/license.html
 * [2] http://openjdk.java.net/legal/assembly-exception.html
 *
 * SPDX-License-Identifier: EPL-2.0 OR Apache-2.0 OR GPL-2.0 WITH Classpath-exception-2.0 OR LicenseRef-GPL-2.0 WITH Assembly-exception
 *******************************************************************************/

#include "j9dbgext.h"
#include "j9comp.h"
#include "j9protos.h"
#include "jextractnatives_internal.h"
#include <string.h>
#include <ctype.h>

static char const notVisibleMsg[] =
		"Error: J9SIZEOF_%s was not visible at compile time.\n"
		"To fix this, add %s to cVisibleStructs (j9.h) and recompile %s\n"
		"\n"
		"(or if %s is in a different header, include that header in %s).";

#define PRINT_NOT_VISIBLE_MSG(x) \
		dbgPrint(notVisibleMsg, (x), (x), __FILE__, (x), __FILE__)

void
run_command(const char *cmd)
{
	size_t len = 0;
	const char *options = NULL;

	while (('\0' != cmd[len]) && !isspace(cmd[len])) {
		len += 1;
	}

	options = cmd + len;
	while (isspace(*options)) {
		options += 1;
	}

#define IsCommand(command) \
		(((sizeof(command) - 1) == len) && \
		(memcmp(cmd, (command), len) == 0))

	if (IsCommand("!j9help")) {
		dbgext_j9help(options);
	} else if (IsCommand("!findvm")) {
		dbgext_findvm(options);
	} else if (IsCommand("!setvm")) {
		dbgext_setvm(options);
	} else {
		dbgPrint("Unknown J9 plugin command %s\n", cmd);
	}

#undef IsCommand
}