hphp/runtime/base/stack-logger.cpp

   1 /*
   2    +----------------------------------------------------------------------+
   3    | HipHop for PHP                                                       |
   4    +----------------------------------------------------------------------+
   5    | Copyright (c) 2010-present Facebook, Inc. (http://www.facebook.com)  |
   6    +----------------------------------------------------------------------+
   7    | This source file is subject to version 3.01 of the PHP license,      |
   8    | that is bundled with this package in the file LICENSE, and is        |
   9    | available through the world-wide-web at the following url:           |
  10    | http://www.php.net/license/3_01.txt                                  |
  11    | If you did not receive a copy of the PHP license and are unable to   |
  12    | obtain it through the world-wide-web, please send a note to          |
  13    | license@php.net so we can mail you a copy immediately.               |
  14    +----------------------------------------------------------------------+
  15 */
  16
  17 #include "hphp/runtime/base/stack-logger.h"
  18
  19 #ifndef FACEBOOK
  20
  21 // folly::symbolizer isn't supported on all the platforms that HHVM is, so we
  22 // deliberately exclude it in our CMake setup, which makes this feature FB-only
  23 // for now.
  24
  25 namespace HPHP {
  26 void log_native_stack(const char* msg) {}
  27 }
  28
  29 #else // FACEBOOK
  30
  31 #include <folly/experimental/symbolizer/StackTrace.h>
  32 #include <folly/experimental/symbolizer/Symbolizer.h>
  33
  34 #include "hphp/util/logger.h"
  35
  36 namespace HPHP {
  37
  38 using namespace folly::symbolizer;
  39
  40 void log_native_stack(const char* msg) {
  41   constexpr size_t kMaxFrames = 128;
  42
  43   uintptr_t addresses[kMaxFrames];
  44   auto nframes = getStackTrace(addresses, kMaxFrames);
  45
  46   Symbolizer symbolizer;
  47   std::vector<SymbolizedFrame> frames(nframes);
  48   symbolizer.symbolize(addresses, frames.data(), nframes);
  49
  50   StringSymbolizePrinter printer;
  51   printer.println(addresses, frames.data(), nframes);
  52   Logger::Error("%s\n\nC++ stack:\n%s",
  53                 msg,
  54                 printer.str().c_str());
  55 }
  56
  57 }
  58
  59 #endif // FACEBOOK