Rename OS(UNIX) to OS(POSIX)

Source/wtf/PageAllocator.cpp

 /*
  * Copyright (C) 2013 Google Inc. 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
@@ skipping 17 matching lines @@
  * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
  */
 
 #include "config.h"
 #include "wtf/PageAllocator.h"
 
 #include "wtf/Assertions.h"
 #include "wtf/CPU.h"
 #include "wtf/CryptographicallyRandomNumber.h"
 
-#if OS(UNIX)
+#if OS(POSIX)
 
 #include <sys/mman.h>
 
 #ifndef MADV_FREE
 #define MADV_FREE MADV_DONTNEED
 #endif
 
 #ifndef MAP_ANONYMOUS
 #define MAP_ANONYMOUS MAP_ANON
 #endif
 
 #elif OS(WIN)
 
 #include <windows.h>
 
 #else
 #error Unknown OS
-#endif // OS(UNIX)
+#endif // OS(POSIX)
 
 namespace WTF {
 
 void* allocSuperPages(void* addr, size_t len)
 {
     ASSERT(!(len & kSuperPageOffsetMask));
     ASSERT(!(reinterpret_cast<uintptr_t>(addr) & kSuperPageOffsetMask));
-#if OS(UNIX)
+#if OS(POSIX)
     char* ptr = reinterpret_cast<char*>(mmap(addr, len, PROT_READ | PROT_WRITE, MAP_ANONYMOUS | MAP_PRIVATE, -1, 0));
     RELEASE_ASSERT(ptr != MAP_FAILED);
     // If our requested address collided with another mapping, there's a
     // chance we'll get back an unaligned address. We fix this by attempting
     // the allocation again, but with enough slack pages that we can find
     // correct alignment within the allocation.
     if (UNLIKELY(reinterpret_cast<uintptr_t>(ptr) & kSuperPageOffsetMask)) {
         int ret = munmap(ptr, len);
         ASSERT(!ret);
         ptr = reinterpret_cast<char*>(mmap(0, len + kSuperPageSize - kSystemPageSize, PROT_READ | PROT_WRITE, MAP_ANONYMOUS | MAP_PRIVATE, -1, 0));
@@ skipping 14 matching lines @@
         }
     }
     void* ret = ptr;
 #else
     // Windows is a lot simpler because we've designed around its
     // coarser-grained alignement.
     void* ret = VirtualAlloc(addr, len, MEM_RESERVE | MEM_COMMIT, PAGE_READWRITE);
     if (!ret)
         ret = VirtualAlloc(0, len, MEM_RESERVE | MEM_COMMIT, PAGE_READWRITE);
     RELEASE_ASSERT(ret);
-#endif // OS(UNIX)
+#endif // OS(POSIX)
     return ret;
 }
 
 void freeSuperPages(void* addr, size_t len)
 {
     ASSERT(!(reinterpret_cast<uintptr_t>(addr) & kSuperPageOffsetMask));
     ASSERT(!(len & kSuperPageOffsetMask));
-#if OS(UNIX)
+#if OS(POSIX)
     int ret = munmap(addr, len);
     ASSERT(!ret);
 #else
     BOOL ret = VirtualFree(addr, 0, MEM_RELEASE);
     ASSERT(ret);
 #endif
 }
 
 void setSystemPagesInaccessible(void* addr, size_t len)
 {
     ASSERT(!(len & kSystemPageOffsetMask));
-#if OS(UNIX)
+#if OS(POSIX)
     int ret = mprotect(addr, len, PROT_NONE);
     ASSERT(!ret);
 #else
     BOOL ret = VirtualFree(addr, len, MEM_DECOMMIT);
     ASSERT(ret);
 #endif
 }
 
 void decommitSystemPages(void* addr, size_t len)
 {
     ASSERT(!(len & kSystemPageOffsetMask));
-#if OS(UNIX)
+#if OS(POSIX)
     int ret = madvise(addr, len, MADV_FREE);
     ASSERT(!ret);
 #else
     void* ret = VirtualAlloc(addr, len, MEM_RESET, PAGE_READWRITE);
     ASSERT(ret);
 #endif
 }
 
 char* getRandomSuperPageBase()
 {
@@ skipping 16 matching lines @@
     // This is a good range on Windows, Linux and Mac.
     // Allocates in the 0.5-1.5GB region.
     random &= (0x3fffffff & kSuperPageBaseMask);
     random += 0x20000000;
 #endif // CPU(X86_64)
     return reinterpret_cast<char*>(random);
 }
 
 } // namespace WTF