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/*
* Copyright (c) 1997, 2022, 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
* under the terms of the GNU General Public License version 2 only, as
* published by the Free Software Foundation.
*
* This code is distributed in the hope that it will be useful, but WITHOUT
* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
* FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
* version 2 for more details (a copy is included in the LICENSE file that
* accompanied this code).
*
* You should have received a copy of the GNU General Public License version
* 2 along with this work; if not, write to the Free Software Foundation,
* Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
*
* Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
* or visit www.oracle.com if you need additional information or have any
* questions.
*
*/
#ifndef SHARE_UTILITIES_DEBUG_HPP
#define SHARE_UTILITIES_DEBUG_HPP
#include "utilities/breakpoint.hpp"
#include "utilities/compilerWarnings.hpp"
#include "utilities/macros.hpp"
#include <stddef.h>
#include <stdint.h>
class oopDesc;
// ShowRegistersOnAssert support (for now Linux only)
#if defined(LINUX) && !defined(ZERO)
#define CAN_SHOW_REGISTERS_ON_ASSERT
extern char* g_assert_poison;
#define TOUCH_ASSERT_POISON (*g_assert_poison) = 'X';
void initialize_assert_poison();
void disarm_assert_poison();
bool handle_assert_poison_fault(const void* ucVoid, const void* faulting_address);
#else
#define TOUCH_ASSERT_POISON
#endif // CAN_SHOW_REGISTERS_ON_ASSERT
// assertions
#ifndef ASSERT
#define vmassert(p, ...)
#else
// Note: message says "assert" rather than "vmassert" for backward
// compatibility with tools that parse/match the message text.
// Note: The signature is vmassert(p, format, ...), but the solaris
// compiler can't handle an empty ellipsis in a macro without a warning.
#define vmassert(p, ...) \
do { \
if (!(p)) { \
TOUCH_ASSERT_POISON; \
report_vm_error(__FILE__, __LINE__, "assert(" #p ") failed", __VA_ARGS__); \
BREAKPOINT; \
} \
} while (0)
#endif
// For backward compatibility.
#define assert(p, ...) vmassert(p, __VA_ARGS__)
#define precond(p) assert(p, "precond")
#define postcond(p) assert(p, "postcond")
#ifndef ASSERT
#define vmassert_status(p, status, msg)
#else
// This version of vmassert is for use with checking return status from
// library calls that return actual error values eg. EINVAL,
// ENOMEM etc, rather than returning -1 and setting errno.
// When the status is not what is expected it is very useful to know
// what status was actually returned, so we pass the status variable as
// an extra arg and use strerror to convert it to a meaningful string
// like "Invalid argument", "out of memory" etc
#define vmassert_status(p, status, msg) \
do { \
if (!(p)) { \
TOUCH_ASSERT_POISON; \
report_vm_status_error(__FILE__, __LINE__, "assert(" #p ") failed", \
status, msg); \
BREAKPOINT; \
} \
} while (0)
#endif
// For backward compatibility.
#define assert_status(p, status, msg) vmassert_status(p, status, msg)
// guarantee is like vmassert except it's always executed -- use it for
// cheap tests that catch errors that would otherwise be hard to find.
// guarantee is also used for Verify options.
#define guarantee(p, ...) \
do { \
if (!(p)) { \
TOUCH_ASSERT_POISON; \
report_vm_error(__FILE__, __LINE__, "guarantee(" #p ") failed", __VA_ARGS__); \
BREAKPOINT; \
} \
} while (0)
#define fatal(...) \
do { \
TOUCH_ASSERT_POISON; \
report_fatal(INTERNAL_ERROR, __FILE__, __LINE__, __VA_ARGS__); \
BREAKPOINT; \
} while (0)
// out of memory
#define vm_exit_out_of_memory(size, vm_err_type, ...) \
do { \
report_vm_out_of_memory(__FILE__, __LINE__, size, vm_err_type, __VA_ARGS__); \
BREAKPOINT; \
} while (0)
#define ShouldNotCallThis() \
do { \
TOUCH_ASSERT_POISON; \
report_should_not_call(__FILE__, __LINE__); \
BREAKPOINT; \
} while (0)
#define ShouldNotReachHere() \
do { \
TOUCH_ASSERT_POISON; \
report_should_not_reach_here(__FILE__, __LINE__); \
BREAKPOINT; \
} while (0)
#define Unimplemented() \
do { \
TOUCH_ASSERT_POISON; \
report_unimplemented(__FILE__, __LINE__); \
BREAKPOINT; \
} while (0)
#define Untested(msg) \
do { \
report_untested(__FILE__, __LINE__, msg); \
BREAKPOINT; \
} while (0);
// types of VM error - originally in vmError.hpp
enum VMErrorType {
INTERNAL_ERROR = 0xe0000000,
OOM_MALLOC_ERROR = 0xe0000001,
OOM_MMAP_ERROR = 0xe0000002,
OOM_MPROTECT_ERROR = 0xe0000003,
OOM_JAVA_HEAP_FATAL = 0xe0000004
};
// Set to suppress secondary error reporting.
// Really should have a qualified name or something.
extern bool Debugging;
// error reporting helper functions
void report_vm_error(const char* file, int line, const char* error_msg);
void report_vm_error(const char* file, int line, const char* error_msg,
const char* detail_fmt, ...) ATTRIBUTE_PRINTF(4, 5);
void report_vm_status_error(const char* file, int line, const char* error_msg,
int status, const char* detail);
void report_fatal(VMErrorType error_type, const char* file, int line, const char* detail_fmt, ...) ATTRIBUTE_PRINTF(4, 5);
void report_vm_out_of_memory(const char* file, int line, size_t size, VMErrorType vm_err_type,
const char* detail_fmt, ...) ATTRIBUTE_PRINTF(5, 6);
void report_should_not_call(const char* file, int line);
void report_should_not_reach_here(const char* file, int line);
void report_unimplemented(const char* file, int line);
void report_untested(const char* file, int line, const char* message);
void warning(const char* format, ...) ATTRIBUTE_PRINTF(1, 2);
#define STATIC_ASSERT(Cond) static_assert((Cond), #Cond)
// out of memory reporting
void report_java_out_of_memory(const char* message);
// Returns true iff the address p is readable and *(intptr_t*)p != errvalue
extern "C" bool dbg_is_safe(const void* p, intptr_t errvalue);
extern "C" bool dbg_is_good_oop(oopDesc* o);
#endif // SHARE_UTILITIES_DEBUG_HPP
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