third_party/tcmalloc/chromium/src/config_for_unittests.h

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  30 // ---
  31 // All Rights Reserved.
  32 //
  33 // Author: Craig Silverstein
  34 //
  35 // This file is needed for windows -- unittests are not part of the
  36 // perftools dll, but still want to include config.h just like the
  37 // dll does, so they can use internal tools and APIs for testing.
  38 //
  39 // The problem is that config.h declares PERFTOOLS_DLL_DECL to be
  40 // for exporting symbols, but the unittest needs to *import* symbols
  41 // (since it's not the dll).
  42 //
  43 // The solution is to have this file, which is just like config.h but
  44 // sets PERFTOOLS_DLL_DECL to do a dllimport instead of a dllexport.
  45 //
  46 // The reason we need this extra PERFTOOLS_DLL_DECL_FOR_UNITTESTS
  47 // variable is in case people want to set PERFTOOLS_DLL_DECL explicitly
  48 // to something other than __declspec(dllexport).  In that case, they
  49 // may want to use something other than __declspec(dllimport) for the
  50 // unittest case.  For that, we allow folks to define both
  51 // PERFTOOLS_DLL_DECL and PERFTOOLS_DLL_DECL_FOR_UNITTESTS explicitly.
  52 //
  53 // NOTE: This file is equivalent to config.h on non-windows systems,
  54 // which never defined PERFTOOLS_DLL_DECL_FOR_UNITTESTS and always
  55 // define PERFTOOLS_DLL_DECL to the empty string.
  56
  57 #include "config.h"
  58
  59 #undef PERFTOOLS_DLL_DECL
  60 #ifdef PERFTOOLS_DLL_DECL_FOR_UNITTESTS
  61 # define PERFTOOLS_DLL_DECL  PERFTOOLS_DLL_DECL_FOR_UNITTESTS
  62 #else
  63 # define PERFTOOLS_DLL_DECL  // if DLL_DECL_FOR_UNITTESTS isn't defined, use ""
  64 #endif