Imported WebKit commit 2ea9d364d0f6efa8fa64acf19f451504c59be0e4 (http://svn.webkit.org/repository/webkit/trunk@104285)

1 files changed, 320 insertions, 0 deletions

diff --git a/Source/JavaScriptCore/wtf/Assertions.cpp b/Source/JavaScriptCore/wtf/Assertions.cpp
new file mode 100644
index 000000000..de062ce25
--- /dev/null
+++ b/Source/JavaScriptCore/wtf/Assertions.cpp
@@ -0,0 +1,320 @@
+/*
+ * Copyright (C) 2003, 2006, 2007 Apple Inc.  All rights reserved.
+ * Copyright (C) 2007-2009 Torch Mobile, Inc.
+ *
+ * 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.
+ */
+
+// The vprintf_stderr_common function triggers this error in the Mac build.
+// Feel free to remove this pragma if this file builds on Mac.
+// According to http://gcc.gnu.org/onlinedocs/gcc-4.2.1/gcc/Diagnostic-Pragmas.html#Diagnostic-Pragmas
+// we need to place this directive before any data or functions are defined.
+#pragma GCC diagnostic ignored "-Wmissing-format-attribute"
+
+#include "config.h"
+#include "Assertions.h"
+
+#include "OwnArrayPtr.h"
+
+#include <stdio.h>
+#include <stdarg.h>
+#include <string.h>
+
+#if PLATFORM(MAC)
+#include <CoreFoundation/CFString.h>
+#include <asl.h>
+#endif
+
+#if COMPILER(MSVC) && !OS(WINCE)
+#include <crtdbg.h>
+#endif
+
+#if OS(WINDOWS)
+#include <windows.h>
+#endif
+
+#if OS(DARWIN) || OS(LINUX)
+#include <cxxabi.h>
+#include <dlfcn.h>
+#include <execinfo.h>
+#endif
+
+#if PLATFORM(BLACKBERRY)
+#include <BlackBerryPlatformLog.h>
+#endif
+
+extern "C" {
+
+WTF_ATTRIBUTE_PRINTF(1, 0)
+static void vprintf_stderr_common(const char* format, va_list args)
+{
+#if PLATFORM(MAC)
+    if (strstr(format, "%@")) {
+        CFStringRef cfFormat = CFStringCreateWithCString(NULL, format, kCFStringEncodingUTF8);
+        CFStringRef str = CFStringCreateWithFormatAndArguments(NULL, NULL, cfFormat, args);
+
+        int length = CFStringGetMaximumSizeForEncoding(CFStringGetLength(str), kCFStringEncodingUTF8);
+        char* buffer = (char*)malloc(length + 1);
+
+        CFStringGetCString(str, buffer, length, kCFStringEncodingUTF8);
+
+#if !defined(BUILDING_ON_SNOW_LEOPARD) && !defined(BUILDING_ON_LION)
+        asl_log(0, 0, ASL_LEVEL_NOTICE, "%s", buffer);
+#endif
+        fputs(buffer, stderr);
+
+        free(buffer);
+        CFRelease(str);
+        CFRelease(cfFormat);
+        return;
+    }
+
+#if !defined(BUILDING_ON_SNOW_LEOPARD) && !defined(BUILDING_ON_LION)
+    va_list copyOfArgs;
+    va_copy(copyOfArgs, args);
+    asl_vlog(0, 0, ASL_LEVEL_NOTICE, format, copyOfArgs);
+    va_end(copyOfArgs);
+#endif
+
+    // Fall through to write to stderr in the same manner as other platforms.
+
+#elif PLATFORM(BLACKBERRY)
+    BlackBerry::Platform::logV(BlackBerry::Platform::LogLevelInfo, format, args);
+#elif HAVE(ISDEBUGGERPRESENT)
+    if (IsDebuggerPresent()) {
+        size_t size = 1024;
+
+        do {
+            char* buffer = (char*)malloc(size);
+
+            if (buffer == NULL)
+                break;
+
+            if (_vsnprintf(buffer, size, format, args) != -1) {
+#if OS(WINCE)
+                // WinCE only supports wide chars
+                wchar_t* wideBuffer = (wchar_t*)malloc(size * sizeof(wchar_t));
+                if (wideBuffer == NULL)
+                    break;
+                for (unsigned int i = 0; i < size; ++i) {
+                    if (!(wideBuffer[i] = buffer[i]))
+                        break;
+                }
+                OutputDebugStringW(wideBuffer);
+                free(wideBuffer);
+#else
+                OutputDebugStringA(buffer);
+#endif
+                free(buffer);
+                break;
+            }
+
+            free(buffer);
+            size *= 2;
+        } while (size > 1024);
+    }
+#endif
+    vfprintf(stderr, format, args);
+}
+
+#if COMPILER(CLANG) || (COMPILER(GCC) && GCC_VERSION_AT_LEAST(4, 6, 0))
+#pragma GCC diagnostic push
+#pragma GCC diagnostic ignored "-Wformat-nonliteral"
+#endif
+
+static void vprintf_stderr_with_prefix(const char* prefix, const char* format, va_list args)
+{
+    size_t prefixLength = strlen(prefix);
+    size_t formatLength = strlen(format);
+    OwnArrayPtr<char> formatWithPrefix = adoptArrayPtr(new char[prefixLength + formatLength + 1]);
+    memcpy(formatWithPrefix.get(), prefix, prefixLength);
+    memcpy(formatWithPrefix.get() + prefixLength, format, formatLength);
+    formatWithPrefix[prefixLength + formatLength] = 0;
+
+    vprintf_stderr_common(formatWithPrefix.get(), args);
+}
+
+static void vprintf_stderr_with_trailing_newline(const char* format, va_list args)
+{
+    size_t formatLength = strlen(format);
+    if (formatLength && format[formatLength - 1] == '\n') {
+        vprintf_stderr_common(format, args);
+        return;
+    }
+
+    OwnArrayPtr<char> formatWithNewline = adoptArrayPtr(new char[formatLength + 2]);
+    memcpy(formatWithNewline.get(), format, formatLength);
+    formatWithNewline[formatLength] = '\n';
+    formatWithNewline[formatLength + 1] = 0;
+
+    vprintf_stderr_common(formatWithNewline.get(), args);
+}
+
+#if COMPILER(CLANG) || (COMPILER(GCC) && GCC_VERSION_AT_LEAST(4, 6, 0))
+#pragma GCC diagnostic pop
+#endif
+
+WTF_ATTRIBUTE_PRINTF(1, 2)
+static void printf_stderr_common(const char* format, ...)
+{
+    va_list args;
+    va_start(args, format);
+    vprintf_stderr_common(format, args);
+    va_end(args);
+}
+
+static void printCallSite(const char* file, int line, const char* function)
+{
+#if OS(WINDOWS) && !OS(WINCE) && defined(_DEBUG)
+    _CrtDbgReport(_CRT_WARN, file, line, NULL, "%s\n", function);
+#else
+    // By using this format, which matches the format used by MSVC for compiler errors, developers
+    // using Visual Studio can double-click the file/line number in the Output Window to have the
+    // editor navigate to that line of code. It seems fine for other developers, too.
+    printf_stderr_common("%s(%d) : %s\n", file, line, function);
+#endif
+}
+
+void WTFReportAssertionFailure(const char* file, int line, const char* function, const char* assertion)
+{
+    if (assertion)
+        printf_stderr_common("ASSERTION FAILED: %s\n", assertion);
+    else
+        printf_stderr_common("SHOULD NEVER BE REACHED\n");
+    printCallSite(file, line, function);
+}
+
+void WTFReportAssertionFailureWithMessage(const char* file, int line, const char* function, const char* assertion, const char* format, ...)
+{
+    va_list args;
+    va_start(args, format);
+    vprintf_stderr_with_prefix("ASSERTION FAILED: ", format, args);
+    va_end(args);
+    printf_stderr_common("\n%s\n", assertion);
+    printCallSite(file, line, function);
+}
+
+void WTFReportArgumentAssertionFailure(const char* file, int line, const char* function, const char* argName, const char* assertion)
+{
+    printf_stderr_common("ARGUMENT BAD: %s, %s\n", argName, assertion);
+    printCallSite(file, line, function);
+}
+
+void WTFGetBacktrace(void** stack, int* size)
+{
+#if OS(DARWIN) || OS(LINUX)
+    *size = backtrace(stack, *size);
+#elif OS(WINDOWS) && !OS(WINCE)
+    // The CaptureStackBackTrace function is available in XP, but it is not defined
+    // in the Windows Server 2003 R2 Platform SDK. So, we'll grab the function
+    // through GetProcAddress.
+    typedef WORD (NTAPI* RtlCaptureStackBackTraceFunc)(DWORD, DWORD, PVOID*, PDWORD);
+    HMODULE kernel32 = ::GetModuleHandleW(L"Kernel32.dll");
+    if (!kernel32) {
+        *size = 0;
+        return;
+    }
+    RtlCaptureStackBackTraceFunc captureStackBackTraceFunc = reinterpret_cast<RtlCaptureStackBackTraceFunc>(
+        ::GetProcAddress(kernel32, "RtlCaptureStackBackTrace"));
+    if (captureStackBackTraceFunc)
+        *size = captureStackBackTraceFunc(0, *size, stack, 0);
+    else
+        *size = 0;
+#else
+    *size = 0;
+#endif
+}
+
+void WTFReportBacktrace()
+{
+    static const int framesToShow = 31;
+    static const int framesToSkip = 2;
+    void* samples[framesToShow + framesToSkip];
+    int frames = framesToShow + framesToSkip;
+
+    WTFGetBacktrace(samples, &frames);
+
+    for (int i = framesToSkip; i < frames; ++i) {
+        const char* mangledName = 0;
+        char* cxaDemangled = 0;
+
+#if !PLATFORM(GTK) && !PLATFORM(QT) && (OS(DARWIN) || OS(LINUX))
+        Dl_info info;
+        if (dladdr(samples[i], &info) && info.dli_sname)
+            mangledName = info.dli_sname;
+        if (mangledName)
+            cxaDemangled = abi::__cxa_demangle(mangledName, 0, 0, 0);
+#endif
+        const int frameNumber = i - framesToSkip + 1;
+        if (mangledName || cxaDemangled)
+            printf_stderr_common("%-3d %p %s\n", frameNumber, samples[i], cxaDemangled ? cxaDemangled : mangledName);
+        else
+            printf_stderr_common("%-3d %p\n", frameNumber, samples[i]);
+        free(cxaDemangled);
+    }
+}
+
+void WTFReportFatalError(const char* file, int line, const char* function, const char* format, ...)
+{
+    va_list args;
+    va_start(args, format);
+    vprintf_stderr_with_prefix("FATAL ERROR: ", format, args);
+    va_end(args);
+    printf_stderr_common("\n");
+    printCallSite(file, line, function);
+}
+
+void WTFReportError(const char* file, int line, const char* function, const char* format, ...)
+{
+    va_list args;
+    va_start(args, format);
+    vprintf_stderr_with_prefix("ERROR: ", format, args);
+    va_end(args);
+    printf_stderr_common("\n");
+    printCallSite(file, line, function);
+}
+
+void WTFLog(WTFLogChannel* channel, const char* format, ...)
+{
+    if (channel->state != WTFLogChannelOn)
+        return;
+
+    va_list args;
+    va_start(args, format);
+    vprintf_stderr_with_trailing_newline(format, args);
+    va_end(args);
+}
+
+void WTFLogVerbose(const char* file, int line, const char* function, WTFLogChannel* channel, const char* format, ...)
+{
+    if (channel->state != WTFLogChannelOn)
+        return;
+
+    va_list args;
+    va_start(args, format);
+    vprintf_stderr_with_trailing_newline(format, args);
+    va_end(args);
+
+    printCallSite(file, line, function);
+}
+
+} // extern "C"