hphp/runtime/base/heap-profiling.h

   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 #ifndef incl_HPHP_HEAP_PROFILING_H_
  18 #define incl_HPHP_HEAP_PROFILING_H_
  19
  20 #include "hphp/runtime/base/backtrace.h"
  21 #include "hphp/util/alloc-defs.h"
  22 #include "hphp/util/stack-trace.h"
  23
  24 #include <string>
  25 #include <vector>
  26
  27 namespace HPHP {
  28
  29 struct HeapAllocSample {
  30   HeapAllocSample(size_t t, size_t s) : time(t), size(s) {}
  31   size_t time;
  32   size_t size;
  33   CompactTraceData::Ptr phpStack{nullptr};
  34   StackTrace nativeStack{false};
  35 };
  36
  37 struct AllocSamples : public std::vector<HeapAllocSample,
  38                                          LocalAllocator<HeapAllocSample>> {
  39   TYPE_SCAN_IGNORE_ALL;
  40
  41   void requestShutdown() {
  42     if (empty()) return;
  43     logSamples();
  44     clear();
  45   }
  46   void addAllocSample(size_t time, size_t size) {
  47     emplace_back(time, size);
  48   }
  49   void addStack(bool skipTop = false);
  50
  51  private:
  52   void logSamples();
  53
  54   std::string script;
  55 };
  56
  57 }
  58
  59 #endif