Move DumpBacktrace() to checks.cc and cleanup both the code and the necessary platform checks.

This also removes the platform-posix.h header file.

R=machenbach@chromium.org

Review URL: https://codereview.chromium.org/23497009

git-svn-id: http://v8.googlecode.com/svn/branches/bleeding_edge@16890 ce2b1a6d-e550-0410-aec6-3dcde31c8c00

src/checks.cc

@@ -25,11 +25,48 @@
 // (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
 // OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
 
-#include <stdarg.h>
+#include "checks.h"
 
-#include "v8.h"
+#if V8_LIBC_GLIBC || V8_OS_BSD
+# include <cxxabi.h>
+# include <execinfo.h>
+#endif  // V8_LIBC_GLIBC || V8_OS_BSD
+#include <stdio.h>
 
 #include "platform.h"
+#include "v8.h"
+
+
+// Attempts to dump a backtrace (if supported).
+static V8_INLINE void DumpBacktrace() {
+#if V8_LIBC_GLIBC || V8_OS_BSD
+  void* trace[100];
+  int size = backtrace(trace, ARRAY_SIZE(trace));
+  char** symbols = backtrace_symbols(trace, size);
+  i::OS::PrintError("\n==== C stack trace ===============================\n\n");
+  if (size == 0) {
+    i::OS::PrintError("(empty)\n");
+  } else if (symbols == NULL) {
+    i::OS::PrintError("(no symbols)\n");
+  } else {
+    for (int i = 1; i < size; ++i) {
+      i::OS::PrintError("%2d: ", i);
+      char mangled[201];
+      if (sscanf(symbols[i], "%*[^(]%*[(]%200[^)+]", mangled) == 1) {  // NOLINT
+        int status;
+        size_t length;
+        char* demangled = abi::__cxa_demangle(mangled, NULL, &length, &status);
+        i::OS::PrintError("%s\n", demangled != NULL ? demangled : mangled);
+        free(demangled);
+      } else {
+        i::OS::PrintError("??\n");
+      }
+    }
+  }
+  free(symbols);
+#endif  // V8_LIBC_GLIBC || V8_OS_BSD
+}
+
 
 // Contains protection against recursive calls (faults while handling faults).
 extern "C" void V8_Fatal(const char* file, int line, const char* format, ...) {
@@ -43,7 +80,8 @@ extern "C" void V8_Fatal(const char* file, int line, const char* format, ...) {
   i::OS::VPrintError(format, arguments);
   va_end(arguments);
   i::OS::PrintError("\n#\n");
-  i::OS::DumpBacktrace();
+  DumpBacktrace();
+  fflush(stderr);
   i::OS::Abort();
 }
 

src/platform-cygwin.cc

@@ -41,7 +41,6 @@
 
 #include "v8.h"
 
-#include "platform-posix.h"
 #include "platform.h"
 #include "simulator.h"
 #include "v8threads.h"
@@ -88,11 +87,6 @@ void* OS::Allocate(const size_t requested,
 }
 
 
-void OS::DumpBacktrace() {
-  // Currently unsupported.
-}
-
-
 class PosixMemoryMappedFile : public OS::MemoryMappedFile {
  public:
   PosixMemoryMappedFile(FILE* file, void* memory, int size)

src/platform-freebsd.cc

@@ -43,7 +43,6 @@
 #include <sys/fcntl.h>  // open
 #include <unistd.h>     // getpagesize
 // If you don't have execinfo.h then you need devel/libexecinfo from ports.
-#include <execinfo.h>   // backtrace, backtrace_symbols
 #include <strings.h>    // index
 #include <errno.h>
 #include <stdarg.h>
@@ -54,7 +53,6 @@
 #include "v8.h"
 #include "v8threads.h"
 
-#include "platform-posix.h"
 #include "platform.h"
 #include "vm-state-inl.h"
 
@@ -97,11 +95,6 @@ void* OS::Allocate(const size_t requested,
 }
 
 
-void OS::DumpBacktrace() {
-  POSIXBacktraceHelper<backtrace, backtrace_symbols>::DumpBacktrace();
-}
-
-
 class PosixMemoryMappedFile : public OS::MemoryMappedFile {
  public:
   PosixMemoryMappedFile(FILE* file, void* memory, int size)

src/platform-linux.cc

@@ -38,11 +38,6 @@
 #include <sys/types.h>
 #include <stdlib.h>
 
-#if defined(__GLIBC__) && !defined(__UCLIBC__)
-#include <execinfo.h>
-#include <cxxabi.h>
-#endif
-
 // Ubuntu Dapper requires memory pages to be marked as
 // executable. Otherwise, OS raises an exception when executing code
 // in that page.
@@ -66,7 +61,6 @@
 
 #include "v8.h"
 
-#include "platform-posix.h"
 #include "platform.h"
 #include "v8threads.h"
 #include "vm-state-inl.h"
@@ -154,14 +148,6 @@ void* OS::Allocate(const size_t requested,
 }
 
 
-void OS::DumpBacktrace() {
-  // backtrace is a glibc extension.
-#if defined(__GLIBC__) && !defined(__UCLIBC__)
-  POSIXBacktraceHelper<backtrace, backtrace_symbols>::DumpBacktrace();
-#endif
-}
-
-
 class PosixMemoryMappedFile : public OS::MemoryMappedFile {
  public:
   PosixMemoryMappedFile(FILE* file, void* memory, int size)

src/platform-macos.cc

@@ -53,27 +53,15 @@
 #include <stdlib.h>
 #include <string.h>
 #include <errno.h>
-#include <cxxabi.h>
 
 #undef MAP_TYPE
 
 #include "v8.h"
 
-#include "platform-posix.h"
 #include "platform.h"
 #include "simulator.h"
 #include "vm-state-inl.h"
 
-// Manually define these here as weak imports, rather than including execinfo.h.
-// This lets us launch on 10.4 which does not have these calls.
-extern "C" {
-  extern int backtrace(void**, int) __attribute__((weak_import));
-  extern char** backtrace_symbols(void* const*, int)
-      __attribute__((weak_import));
-  extern void backtrace_symbols_fd(void* const*, int, int)
-      __attribute__((weak_import));
-}
-
 
 namespace v8 {
 namespace internal {
@@ -107,14 +95,6 @@ void* OS::Allocate(const size_t requested,
 }
 
 
-void OS::DumpBacktrace() {
-  // If weak link to execinfo lib has failed, ie because we are on 10.4, abort.
-  if (backtrace == NULL) return;
-
-  POSIXBacktraceHelper<backtrace, backtrace_symbols>::DumpBacktrace();
-}
-
-
 class PosixMemoryMappedFile : public OS::MemoryMappedFile {
  public:
   PosixMemoryMappedFile(FILE* file, void* memory, int size)

src/platform-openbsd.cc

@@ -42,7 +42,6 @@
 #include <sys/stat.h>   // open
 #include <fcntl.h>      // open
 #include <unistd.h>     // sysconf
-#include <execinfo.h>   // backtrace, backtrace_symbols
 #include <strings.h>    // index
 #include <errno.h>
 #include <stdarg.h>
@@ -51,7 +50,6 @@
 
 #include "v8.h"
 
-#include "platform-posix.h"
 #include "platform.h"
 #include "v8threads.h"
 #include "vm-state-inl.h"
@@ -96,11 +94,6 @@ void* OS::Allocate(const size_t requested,
 }
 
 
-void OS::DumpBacktrace() {
-  // Currently unsupported.
-}
-
-
 class PosixMemoryMappedFile : public OS::MemoryMappedFile {
  public:
   PosixMemoryMappedFile(FILE* file, void* memory, int size)

src/platform-posix.cc

@@ -29,8 +29,6 @@
 // own but contains the parts which are the same across POSIX platforms Linux,
 // Mac OS, FreeBSD and OpenBSD.
 
-#include "platform-posix.h"
-
 #include <dlfcn.h>
 #include <pthread.h>
 #if defined(__DragonFly__) || defined(__FreeBSD__) || defined(__OpenBSD__)

src/platform-posix.h

-// Copyright 2012 the V8 project authors. All rights reserved.
-// Redistribution and use in source and binary forms, with or without
-// modification, are permitted provided that the following conditions are
-// met:
-//
-//     * Redistributions of source code must retain the above copyright
-//       notice, this list of conditions and the following disclaimer.
-//     * 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.
-//     * Neither the name of Google Inc. nor the names of its
-//       contributors may be used to endorse or promote products derived
-//       from this software without specific prior written permission.
-//
-// THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
-// "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 THE COPYRIGHT
-// OWNER 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 V8_PLATFORM_POSIX_H_
-#define V8_PLATFORM_POSIX_H_
-
-#if !defined(ANDROID)
-#include <cxxabi.h>
-#endif
-#include <stdio.h>
-
-#include "platform.h"
-
-namespace v8 {
-namespace internal {
-
-// Used by platform implementation files during OS::DumpBacktrace()
-template<int (*backtrace)(void**, int),
-         char** (*backtrace_symbols)(void* const*, int)>
-struct POSIXBacktraceHelper {
-  static void DumpBacktrace() {
-    void* trace[100];
-    int size = backtrace(trace, ARRAY_SIZE(trace));
-    char** symbols = backtrace_symbols(trace, size);
-    fprintf(stderr, "\n==== C stack trace ===============================\n\n");
-    if (size == 0) {
-      fprintf(stderr, "(empty)\n");
-    } else if (symbols == NULL) {
-      fprintf(stderr, "(no symbols)\n");
-    } else {
-      for (int i = 1; i < size; ++i) {
-        fprintf(stderr, "%2d: ", i);
-        char mangled[201];
-        if (sscanf(symbols[i], "%*[^(]%*[(]%200[^)+]", mangled) == 1) {// NOLINT
-          char* demangled = NULL;
-#if !defined(ANDROID)
-          int status;
-          size_t length;
-          demangled = abi::__cxa_demangle(mangled, NULL, &length, &status);
-#endif
-          fprintf(stderr, "%s\n", demangled != NULL ? demangled : mangled);
-          free(demangled);
-        } else {
-          fprintf(stderr, "??\n");
-        }
-      }
-    }
-    fflush(stderr);
-    free(symbols);
-  }
-};
-
-} }  // namespace v8::internal
-
-#endif  // V8_PLATFORM_POSIX_H_

src/platform-solaris.cc

@@ -51,7 +51,6 @@
 
 #include "v8.h"
 
-#include "platform-posix.h"
 #include "platform.h"
 #include "v8threads.h"
 #include "vm-state-inl.h"
@@ -112,11 +111,6 @@ void* OS::Allocate(const size_t requested,
 }
 
 
-void OS::DumpBacktrace() {
-  // Currently unsupported.
-}
-
-
 class PosixMemoryMappedFile : public OS::MemoryMappedFile {
  public:
   PosixMemoryMappedFile(FILE* file, void* memory, int size)

src/platform-win32.cc

@@ -891,11 +891,6 @@ void OS::DebugBreak() {
 }
 
 
-void OS::DumpBacktrace() {
-  // Currently unsupported.
-}
-
-
 class Win32MemoryMappedFile : public OS::MemoryMappedFile {
  public:
   Win32MemoryMappedFile(HANDLE file,

src/platform.h

@@ -256,9 +256,6 @@ class OS {
   // Debug break.
   static void DebugBreak();
 
-  // Dump C++ current stack trace (only functional on Linux).
-  static void DumpBacktrace();
-
   // Walk the stack.
   static const int kStackWalkError = -1;
   static const int kStackWalkMaxNameLen = 256;