Mercurial > hg > truffle
view src/share/vm/utilities/debug.hpp @ 17417:2915eff532d4
Fix code generation problem with sub-int Constants.
author | Roland Schatz <roland.schatz@oracle.com> |
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date | Mon, 13 Oct 2014 15:26:02 +0200 |
parents | 4ca6dc0799b6 |
children | 52b4284cb496 |
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/* * Copyright (c) 1997, 2013, 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_VM_UTILITIES_DEBUG_HPP #define SHARE_VM_UTILITIES_DEBUG_HPP #include "prims/jvm.h" #include "utilities/globalDefinitions.hpp" #include <stdarg.h> // Simple class to format the ctor arguments into a fixed-sized buffer. class FormatBufferBase { protected: char* _buf; inline FormatBufferBase(char* buf) : _buf(buf) {} public: operator const char *() const { return _buf; } }; // Use resource area for buffer #define RES_BUFSZ 256 class FormatBufferResource : public FormatBufferBase { public: FormatBufferResource(const char * format, ...); }; // Use stack for buffer template <size_t bufsz = 256> class FormatBuffer : public FormatBufferBase { public: inline FormatBuffer(const char * format, ...); inline void append(const char* format, ...); inline void print(const char* format, ...); inline void printv(const char* format, va_list ap); char* buffer() { return _buf; } int size() { return bufsz; } private: FormatBuffer(const FormatBuffer &); // prevent copies char _buffer[bufsz]; protected: inline FormatBuffer(); }; template <size_t bufsz> FormatBuffer<bufsz>::FormatBuffer(const char * format, ...) : FormatBufferBase(_buffer) { va_list argp; va_start(argp, format); jio_vsnprintf(_buf, bufsz, format, argp); va_end(argp); } template <size_t bufsz> FormatBuffer<bufsz>::FormatBuffer() : FormatBufferBase(_buffer) { _buf[0] = '\0'; } template <size_t bufsz> void FormatBuffer<bufsz>::print(const char * format, ...) { va_list argp; va_start(argp, format); jio_vsnprintf(_buf, bufsz, format, argp); va_end(argp); } template <size_t bufsz> void FormatBuffer<bufsz>::printv(const char * format, va_list argp) { jio_vsnprintf(_buf, bufsz, format, argp); } template <size_t bufsz> void FormatBuffer<bufsz>::append(const char* format, ...) { // Given that the constructor does a vsnprintf we can assume that // _buf is already initialized. size_t len = strlen(_buf); char* buf_end = _buf + len; va_list argp; va_start(argp, format); jio_vsnprintf(buf_end, bufsz - len, format, argp); va_end(argp); } // Used to format messages for assert(), guarantee(), fatal(), etc. typedef FormatBuffer<> err_msg; typedef FormatBufferResource err_msg_res; // assertions #ifdef ASSERT #ifndef USE_REPEATED_ASSERTS #define assert(p, msg) \ do { \ if (!(p)) { \ report_vm_error(__FILE__, __LINE__, "assert(" #p ") failed", msg); \ BREAKPOINT; \ } \ } while (0) #else // #ifndef USE_REPEATED_ASSERTS #define assert(p, msg) do { \ for (int __i = 0; __i < AssertRepeat; __i++) { \ if (!(p)) { \ report_vm_error(__FILE__, __LINE__, "assert(" #p ") failed", msg); \ BREAKPOINT; \ } \ } \ } while (0) #endif // #ifndef USE_REPEATED_ASSERTS // This version of assert 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 assert_status(p, status, msg) \ do { \ if (!(p)) { \ report_vm_error(__FILE__, __LINE__, "assert(" #p ") failed", \ err_msg("error %s(%d) %s", strerror(status), \ status, msg)); \ BREAKPOINT; \ } \ } while (0) // Do not assert this condition if there's already another error reported. #define assert_if_no_error(cond,msg) assert((cond) || is_error_reported(), msg) #else // #ifdef ASSERT #define assert(p,msg) #define assert_status(p,status,msg) #define assert_if_no_error(cond,msg) #endif // #ifdef ASSERT // guarantee is like assert 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, msg) \ do { \ if (!(p)) { \ report_vm_error(__FILE__, __LINE__, "guarantee(" #p ") failed", msg); \ BREAKPOINT; \ } \ } while (0) #define fatal(msg) \ do { \ report_fatal(__FILE__, __LINE__, msg); \ BREAKPOINT; \ } while (0) // out of memory #define vm_exit_out_of_memory(size, vm_err_type, msg) \ do { \ report_vm_out_of_memory(__FILE__, __LINE__, size, vm_err_type, msg); \ BREAKPOINT; \ } while (0) #define ShouldNotCallThis() \ do { \ report_should_not_call(__FILE__, __LINE__); \ BREAKPOINT; \ } while (0) #define ShouldNotReachHere() \ do { \ report_should_not_reach_here(__FILE__, __LINE__); \ BREAKPOINT; \ } while (0) #define Unimplemented() \ do { \ 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 }; // error reporting helper functions void report_vm_error(const char* file, int line, const char* error_msg, const char* detail_msg = NULL); void report_fatal(const char* file, int line, const char* message); void report_vm_out_of_memory(const char* file, int line, size_t size, VMErrorType vm_err_type, const char* message); 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, ...); #ifdef ASSERT // Compile-time asserts. template <bool> struct StaticAssert; template <> struct StaticAssert<true> {}; // Only StaticAssert<true> is defined, so if cond evaluates to false we get // a compile time exception when trying to use StaticAssert<false>. #define STATIC_ASSERT(cond) \ do { \ StaticAssert<(cond)> DUMMY_STATIC_ASSERT; \ (void)DUMMY_STATIC_ASSERT; /* ignore */ \ } while (false) #else #define STATIC_ASSERT(cond) #endif // out of shared space reporting enum SharedSpaceType { SharedPermGen, SharedReadOnly, SharedReadWrite, SharedMiscData }; void report_out_of_shared_space(SharedSpaceType space_type); // out of memory reporting void report_java_out_of_memory(const char* message); // Support for self-destruct bool is_error_reported(); void set_error_reported(); /* Test assert(), fatal(), guarantee(), etc. */ NOT_PRODUCT(void test_error_handler();) void pd_ps(frame f); void pd_obfuscate_location(char *buf, size_t buflen); #endif // SHARE_VM_UTILITIES_DEBUG_HPP