Add support for the QNX operating system.

src/checks.cc

 // Copyright 2006-2008 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
@@ skipping 12 matching lines @@
 // 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.
 
 #include "checks.h"
 
 #if V8_LIBC_GLIBC || V8_OS_BSD
 # include <cxxabi.h>
 # include <execinfo.h>
-#endif  // V8_LIBC_GLIBC || V8_OS_BSD
+#elif V8_OS_QNX
+# include <backtrace.h>
+#endif  // V8_LIBC_GLIBC || V8_OS_BSD || V8_OS_QNX

[Benedikt Meurer, 2013/11/15 11:49:59]

The #endif should only list the conditions from #if.

 #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];
@@ skipping 13 matching lines @@
         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
+#elif V8_OS_QNX
+  char out[1024];
+  bt_accessor_t acc;
+  bt_memmap_t memmap;
+  bt_init_accessor(&acc, BT_SELF);
+  bt_load_memmap(&acc, &memmap);
+  bt_sprn_memmap(&memmap, out, sizeof(out));
+  i::OS::PrintError(out);
+  bt_addr_t trace[100];
+  int size = bt_get_backtrace(&acc, trace, ARRAY_SIZE(trace));
+  i::OS::PrintError("\n==== C stack trace ===============================\n\n");
+  if (size == 0) {
+    i::OS::PrintError("(empty)\n");
+  } else {
+    bt_sprnf_addrs(&memmap, trace, size, const_cast<char*>("%a\n"),
+                   out, sizeof(out), NULL);
+    i::OS::PrintError(out);
+  }
+  bt_unload_memmap(&memmap);
+  bt_release_accessor(&acc);
+#endif  // V8_LIBC_GLIBC || V8_OS_BSD || V8_OS_QNX

[Benedikt Meurer, 2013/11/15 11:49:59]

Same as above.

 }
 
 
 // Contains protection against recursive calls (faults while handling faults).
 extern "C" void V8_Fatal(const char* file, int line, const char* format, ...) {
   i::AllowHandleDereference allow_deref;
   i::AllowDeferredHandleDereference allow_deferred_deref;
   fflush(stdout);
   fflush(stderr);
   i::OS::PrintError("\n\n#\n# Fatal error in %s, line %d\n# ", file, line);
@@ skipping 48 matching lines @@
   i::OS::Abort();
 }
 
 
 namespace v8 { namespace internal {
 
   intptr_t HeapObjectTagMask() { return kHeapObjectTagMask; }
 
 } }  // namespace v8::internal