xpcom/base/nsMacUtilsImpl.h

   1 /* -*- Mode: C++; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
   2 /* vim: set ts=8 sts=2 et sw=2 tw=80: */
   3 /* This Source Code Form is subject to the terms of the Mozilla Public
   4  * License, v. 2.0. If a copy of the MPL was not distributed with this
   5  * file, You can obtain one at http://mozilla.org/MPL/2.0/. */
   6
   7 #ifndef nsMacUtilsImpl_h___
   8 #define nsMacUtilsImpl_h___
   9
  10 #include "nsIMacUtils.h"
  11 #include "nsString.h"
  12 #include "mozilla/Atomics.h"
  13 #include "mozilla/Attributes.h"
  14 #include "mozilla/StaticMutex.h"
  15 #include "mozilla/StaticPtr.h"
  16
  17 using mozilla::Atomic;
  18 using mozilla::StaticAutoPtr;
  19 using mozilla::StaticMutex;
  20
  21 class nsMacUtilsImpl final : public nsIMacUtils {
  22  public:
  23   NS_DECL_ISUPPORTS
  24   NS_DECL_NSIMACUTILS
  25
  26   nsMacUtilsImpl() {}
  27
  28   // Return the repo directory and the repo object directory respectively.
  29   // These should only be used on Mac developer builds to determine the path
  30   // to the repo or object directory.
  31   static nsresult GetRepoDir(nsIFile** aRepoDir);
  32   static nsresult GetObjDir(nsIFile** aObjDir);
  33
  34 #if defined(MOZ_SANDBOX)
  35   static bool GetAppPath(nsCString& aAppPath);
  36 #  ifdef DEBUG
  37   static nsresult GetBloatLogDir(nsCString& aDirectoryPath);
  38   static nsresult GetDirectoryPath(const char* aPath,
  39                                    nsCString& aDirectoryPath);
  40 #  endif /* DEBUG */
  41 #endif   /* MOZ_SANDBOX */
  42
  43   static void EnableTCSMIfAvailable();
  44   static bool IsTCSMAvailable();
  45   static uint32_t GetPhysicalCPUCount();
  46   static nsresult GetArchitecturesForBundle(uint32_t* aArchMask);
  47   static nsresult GetArchitecturesForBinary(const char* aPath,
  48                                             uint32_t* aArchMask);
  49
  50 #if defined(__aarch64__)
  51   // Pre-translate binaries to avoid translation delays when launching
  52   // x64 child process instances for the first time. i.e. on first launch
  53   // after installation or after an update. Translations are cached so
  54   // repeated launches of the binaries do not encounter delays.
  55   static int PreTranslateXUL();
  56   static int PreTranslateBinary(nsCString aBinaryPath);
  57 #endif
  58
  59  private:
  60   ~nsMacUtilsImpl() {}
  61
  62   nsresult GetArchString(nsAString& aArchString);
  63
  64   // A string containing a "-" delimited list of architectures
  65   // in our binary.
  66   nsString mBinaryArchs;
  67
  68 #if defined(MOZ_SANDBOX)
  69   // Cache the appDir returned from GetAppPath to avoid doing I/O
  70   static StaticAutoPtr<nsCString> sCachedAppPath;
  71   // For thread safe setting/checking of sCachedAppPath
  72   static StaticMutex sCachedAppPathMutex;
  73   // Utility method to call ClearOnShutdown() on the main thread
  74   static nsresult ClearCachedAppPathOnShutdown();
  75 #endif
  76
  77   // The cached machine architectures of the .app bundle which can
  78   // be multiple architectures for universal binaries.
  79   static std::atomic<uint32_t> sBundleArchMaskAtomic;
  80
  81 #if defined(__aarch64__)
  82   // Limit XUL translation to one attempt
  83   static std::atomic<bool> sIsXULTranslated;
  84 #endif
  85
  86   enum TCSMStatus { TCSM_Unknown = 0, TCSM_Available, TCSM_Unavailable };
  87   static mozilla::Atomic<nsMacUtilsImpl::TCSMStatus> sTCSMStatus;
  88
  89   static nsresult EnableTCSM();
  90 #if defined(DEBUG)
  91   static bool IsTCSMEnabled();
  92 #endif
  93 };
  94
  95 // Global singleton service
  96 // 697BD3FD-43E5-41CE-AD5E-C339175C0818
  97 #define NS_MACUTILSIMPL_CID                          \
  98   {                                                  \
  99     0x697BD3FD, 0x43E5, 0x41CE, {                    \
 100       0xAD, 0x5E, 0xC3, 0x39, 0x17, 0x5C, 0x08, 0x18 \
 101     }                                                \
 102   }
 103 #define NS_MACUTILSIMPL_CONTRACTID "@mozilla.org/xpcom/mac-utils;1"
 104
 105 #endif /* nsMacUtilsImpl_h___ */