/* * Copyright (C) 2003, 2006, 2007 Apple Inc. All rights reserved. * * Redistribution and use in source and binary forms, with or without * modification, are permitted provided that the following conditions * are met: * 1. Redistributions of source code must retain the above copyright * notice, this list of conditions and the following disclaimer. * 2. Redistributions in binary form must reproduce the above copyright * notice, this list of conditions and the following disclaimer in the * documentation and/or other materials provided with the distribution. * * THIS SOFTWARE IS PROVIDED BY APPLE COMPUTER, INC. ``AS IS'' AND ANY * EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL APPLE COMPUTER, INC. OR * CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR * PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY * OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. */ #ifndef WTF_Assertions_h #define WTF_Assertions_h /* no namespaces because this file has to be includable from C and Objective-C Note, this file uses many GCC extensions, but it should be compatible with C, Objective C, C++, and Objective C++. For non-debug builds, everything is disabled by default. Defining any of the symbols explicitly prevents this from having any effect. MSVC7 note: variadic macro support was added in MSVC8, so for now we disable those macros in MSVC7. For more info, see the MSDN document on variadic macros here: http://msdn2.microsoft.com/en-us/library/ms177415(VS.80).aspx */ #include "Platform.h" #if COMPILER(MSVC) #include #else #include #endif #if OS(SYMBIAN) #include #include #endif #ifdef NDEBUG #define ASSERTIONS_DISABLED_DEFAULT 1 #else #define ASSERTIONS_DISABLED_DEFAULT 0 #endif #if COMPILER(MSVC7) || COMPILER(WINSCW) #define HAVE_VARIADIC_MACRO 0 #else #define HAVE_VARIADIC_MACRO 1 #endif #ifndef ASSERT_DISABLED #define ASSERT_DISABLED ASSERTIONS_DISABLED_DEFAULT #endif #ifndef ASSERT_MSG_DISABLED #if HAVE(VARIADIC_MACRO) #define ASSERT_MSG_DISABLED ASSERTIONS_DISABLED_DEFAULT #else #define ASSERT_MSG_DISABLED 1 #endif #endif #ifndef ASSERT_ARG_DISABLED #define ASSERT_ARG_DISABLED ASSERTIONS_DISABLED_DEFAULT #endif #ifndef FATAL_DISABLED #if HAVE(VARIADIC_MACRO) #define FATAL_DISABLED ASSERTIONS_DISABLED_DEFAULT #else #define FATAL_DISABLED 1 #endif #endif #ifndef ERROR_DISABLED #if HAVE(VARIADIC_MACRO) #define ERROR_DISABLED ASSERTIONS_DISABLED_DEFAULT #else #define ERROR_DISABLED 1 #endif #endif #ifndef LOG_DISABLED #if HAVE(VARIADIC_MACRO) #define LOG_DISABLED ASSERTIONS_DISABLED_DEFAULT #else #define LOG_DISABLED 1 #endif #endif #if COMPILER(GCC) #define WTF_PRETTY_FUNCTION __PRETTY_FUNCTION__ #else #define WTF_PRETTY_FUNCTION __FUNCTION__ #endif /* WTF logging functions can process %@ in the format string to log a NSObject* but the printf format attribute emits a warning when %@ is used in the format string. Until is resolved we can't include the attribute when being used from Objective-C code in case it decides to use %@. */ #if COMPILER(GCC) && !defined(__OBJC__) #define WTF_ATTRIBUTE_PRINTF(formatStringArgument, extraArguments) __attribute__((__format__(printf, formatStringArgument, extraArguments))) #else #define WTF_ATTRIBUTE_PRINTF(formatStringArgument, extraArguments) #endif /* These helper functions are always declared, but not necessarily always defined if the corresponding function is disabled. */ #ifdef __cplusplus extern "C" { #endif typedef enum { WTFLogChannelOff, WTFLogChannelOn } WTFLogChannelState; typedef struct { unsigned mask; const char *defaultName; WTFLogChannelState state; } WTFLogChannel; void WTFReportAssertionFailure(const char* file, int line, const char* function, const char* assertion); void WTFReportAssertionFailureWithMessage(const char* file, int line, const char* function, const char* assertion, const char* format, ...) WTF_ATTRIBUTE_PRINTF(5, 6); void WTFReportArgumentAssertionFailure(const char* file, int line, const char* function, const char* argName, const char* assertion); void WTFReportFatalError(const char* file, int line, const char* function, const char* format, ...) WTF_ATTRIBUTE_PRINTF(4, 5); void WTFReportError(const char* file, int line, const char* function, const char* format, ...) WTF_ATTRIBUTE_PRINTF(4, 5); void WTFLog(WTFLogChannel* channel, const char* format, ...) WTF_ATTRIBUTE_PRINTF(2, 3); void WTFLogVerbose(const char* file, int line, const char* function, WTFLogChannel* channel, const char* format, ...) WTF_ATTRIBUTE_PRINTF(5, 6); #ifdef __cplusplus } #endif /* CRASH -- gets us into the debugger or the crash reporter -- signals are ignored by the crash reporter so we must do better */ #ifndef CRASH #if OS(SYMBIAN) #define CRASH() do { \ __DEBUGGER(); \ User::Panic(_L("Webkit CRASH"),0); \ } while(false) #else #define CRASH() do { \ *(int *)(uintptr_t)0xbbadbeef = 0; \ ((void(*)())0)(); /* More reliable, but doesn't say BBADBEEF */ \ } while(false) #endif #endif /* ASSERT, ASSERT_NOT_REACHED, ASSERT_UNUSED */ #if OS(WINCE) && !PLATFORM(TORCHMOBILE) /* FIXME: We include this here only to avoid a conflict with the ASSERT macro. */ #include #undef min #undef max #undef ERROR #endif #if OS(WINDOWS) || OS(SYMBIAN) /* FIXME: Change to use something other than ASSERT to avoid this conflict with the underlying platform */ #undef ASSERT #endif #if ASSERT_DISABLED #define ASSERT(assertion) ((void)0) #define ASSERT_NOT_REACHED() ((void)0) #define ASSERT_UNUSED(variable, assertion) ((void)variable) #else #define ASSERT(assertion) do \ if (!(assertion)) { \ WTFReportAssertionFailure(__FILE__, __LINE__, WTF_PRETTY_FUNCTION, #assertion); \ CRASH(); \ } \ while (0) #define ASSERT_NOT_REACHED() do { \ WTFReportAssertionFailure(__FILE__, __LINE__, WTF_PRETTY_FUNCTION, 0); \ CRASH(); \ } while (0) #define ASSERT_UNUSED(variable, assertion) ASSERT(assertion) #endif /* ASSERT_WITH_MESSAGE */ #if COMPILER(MSVC7) #define ASSERT_WITH_MESSAGE(assertion) ((void)0) #elif COMPILER(WINSCW) #define ASSERT_WITH_MESSAGE(assertion, arg...) ((void)0) #elif ASSERT_MSG_DISABLED #define ASSERT_WITH_MESSAGE(assertion, ...) ((void)0) #else #define ASSERT_WITH_MESSAGE(assertion, ...) do \ if (!(assertion)) { \ WTFReportAssertionFailureWithMessage(__FILE__, __LINE__, WTF_PRETTY_FUNCTION, #assertion, __VA_ARGS__); \ CRASH(); \ } \ while (0) #endif /* ASSERT_ARG */ #if ASSERT_ARG_DISABLED #define ASSERT_ARG(argName, assertion) ((void)0) #else #define ASSERT_ARG(argName, assertion) do \ if (!(assertion)) { \ WTFReportArgumentAssertionFailure(__FILE__, __LINE__, WTF_PRETTY_FUNCTION, #argName, #assertion); \ CRASH(); \ } \ while (0) #endif /* COMPILE_ASSERT */ #ifndef COMPILE_ASSERT #if COMPILER_SUPPORTS(C_STATIC_ASSERT) /* Unlike static_assert below, this also works in plain C code. */ #define COMPILE_ASSERT(exp, name) _Static_assert((exp), #name) #elif COMPILER_SUPPORTS(CXX_STATIC_ASSERT) #define COMPILE_ASSERT(exp, name) static_assert((exp), #name) #else #define COMPILE_ASSERT(exp, name) typedef int dummy##name [(exp) ? 1 : -1] #endif #endif /* FATAL */ #if COMPILER(MSVC7) #define FATAL() ((void)0) #elif COMPILER(WINSCW) #define FATAL(arg...) ((void)0) #elif FATAL_DISABLED #define FATAL(...) ((void)0) #else #define FATAL(...) do { \ WTFReportFatalError(__FILE__, __LINE__, WTF_PRETTY_FUNCTION, __VA_ARGS__); \ CRASH(); \ } while (0) #endif /* LOG_ERROR */ #if COMPILER(MSVC7) #define LOG_ERROR() ((void)0) #elif COMPILER(WINSCW) #define LOG_ERROR(arg...) ((void)0) #elif ERROR_DISABLED #define LOG_ERROR(...) ((void)0) #else #define LOG_ERROR(...) WTFReportError(__FILE__, __LINE__, WTF_PRETTY_FUNCTION, __VA_ARGS__) #endif /* LOG */ #if COMPILER(MSVC7) #define LOG() ((void)0) #elif COMPILER(WINSCW) #define LOG(arg...) ((void)0) #elif LOG_DISABLED #define LOG(channel, ...) ((void)0) #else #define LOG(channel, ...) WTFLog(&JOIN_LOG_CHANNEL_WITH_PREFIX(LOG_CHANNEL_PREFIX, channel), __VA_ARGS__) #define JOIN_LOG_CHANNEL_WITH_PREFIX(prefix, channel) JOIN_LOG_CHANNEL_WITH_PREFIX_LEVEL_2(prefix, channel) #define JOIN_LOG_CHANNEL_WITH_PREFIX_LEVEL_2(prefix, channel) prefix ## channel #endif /* LOG_VERBOSE */ #if COMPILER(MSVC7) #define LOG_VERBOSE(channel) ((void)0) #elif COMPILER(WINSCW) #define LOG_VERBOSE(channel, arg...) ((void)0) #elif LOG_DISABLED #define LOG_VERBOSE(channel, ...) ((void)0) #else #define LOG_VERBOSE(channel, ...) WTFLogVerbose(__FILE__, __LINE__, WTF_PRETTY_FUNCTION, &JOIN_LOG_CHANNEL_WITH_PREFIX(LOG_CHANNEL_PREFIX, channel), __VA_ARGS__) #endif #endif /* WTF_Assertions_h */