Apply clang-format with Chromium-style without column limit.

third_party/WebKit/Source/wtf/AddressSpaceRandomization.cpp

 // Copyright 2014 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #include "config.h"
 #include "wtf/AddressSpaceRandomization.h"
 
 #include "wtf/PageAllocator.h"
 #include "wtf/SpinLock.h"
 
 #if OS(WIN)
 #include <windows.h>
 #else
 #include <sys/time.h>
 #include <unistd.h>
 #endif
 
 namespace WTF {
 
 namespace {
 
 // This is the same PRNG as used by tcmalloc for mapping address randomness;
 // see http://burtleburtle.net/bob/rand/smallprng.html
 struct ranctx {
-    int lock;
-    bool initialized;
-    uint32_t a;
-    uint32_t b;
-    uint32_t c;
-    uint32_t d;
+  int lock;
+  bool initialized;
+  uint32_t a;
+  uint32_t b;
+  uint32_t c;
+  uint32_t d;
 };
 
 #define rot(x, k) (((x) << (k)) | ((x) >> (32 - (k))))
 
-uint32_t ranvalInternal(ranctx* x)
-{
-    uint32_t e = x->a - rot(x->b, 27);
-    x->a = x->b ^ rot(x->c, 17);
-    x->b = x->c + x->d;
-    x->c = x->d + e;
-    x->d = e + x->a;
-    return x->d;
+uint32_t ranvalInternal(ranctx* x) {
+  uint32_t e = x->a - rot(x->b, 27);
+  x->a = x->b ^ rot(x->c, 17);
+  x->b = x->c + x->d;
+  x->c = x->d + e;
+  x->d = e + x->a;
+  return x->d;
 }
 
 #undef rot
 
-uint32_t ranval(ranctx* x)
-{
-    spinLockLock(&x->lock);
-    if (UNLIKELY(!x->initialized)) {
-        x->initialized = true;
-        char c;
-        uint32_t seed = static_cast<uint32_t>(reinterpret_cast<uintptr_t>(&c));
-        uint32_t pid;
-        uint32_t usec;
+uint32_t ranval(ranctx* x) {
+  spinLockLock(&x->lock);
+  if (UNLIKELY(!x->initialized)) {
+    x->initialized = true;
+    char c;
+    uint32_t seed = static_cast<uint32_t>(reinterpret_cast<uintptr_t>(&c));
+    uint32_t pid;
+    uint32_t usec;
 #if OS(WIN)
-        pid = GetCurrentProcessId();
-        SYSTEMTIME st;
-        GetSystemTime(&st);
-        usec = static_cast<uint32_t>(st.wMilliseconds * 1000);
+    pid = GetCurrentProcessId();
+    SYSTEMTIME st;
+    GetSystemTime(&st);
+    usec = static_cast<uint32_t>(st.wMilliseconds * 1000);
 #else
-        pid = static_cast<uint32_t>(getpid());
-        struct timeval tv;
-        gettimeofday(&tv, 0);
-        usec = static_cast<uint32_t>(tv.tv_usec);
+    pid = static_cast<uint32_t>(getpid());
+    struct timeval tv;
+    gettimeofday(&tv, 0);
+    usec = static_cast<uint32_t>(tv.tv_usec);
 #endif
-        seed ^= pid;
-        seed ^= usec;
-        x->a = 0xf1ea5eed;
-        x->b = x->c = x->d = seed;
-        for (int i = 0; i < 20; ++i) {
-            (void) ranvalInternal(x);
-        }
+    seed ^= pid;
+    seed ^= usec;
+    x->a = 0xf1ea5eed;
+    x->b = x->c = x->d = seed;
+    for (int i = 0; i < 20; ++i) {
+      (void)ranvalInternal(x);
     }
-    uint32_t ret = ranvalInternal(x);
-    spinLockUnlock(&x->lock);
-    return ret;
+  }
+  uint32_t ret = ranvalInternal(x);
+  spinLockUnlock(&x->lock);
+  return ret;
 }
 
 static struct ranctx s_ranctx;
-
 }
 
 // Calculates a random preferred mapping address. In calculating an
 // address, we balance good ASLR against not fragmenting the address
 // space too badly.
-void* getRandomPageBase()
-{
-    uintptr_t random;
-    random = static_cast<uintptr_t>(ranval(&s_ranctx));
+void* getRandomPageBase() {
+  uintptr_t random;
+  random = static_cast<uintptr_t>(ranval(&s_ranctx));
 #if CPU(X86_64)
-    random <<= 32UL;
-    random |= static_cast<uintptr_t>(ranval(&s_ranctx));
-    // This address mask gives a low liklihood of address space collisions.
-    // We handle the situation gracefully if there is a collision.
+  random <<= 32UL;
+  random |= static_cast<uintptr_t>(ranval(&s_ranctx));
+// This address mask gives a low liklihood of address space collisions.
+// We handle the situation gracefully if there is a collision.
 #if OS(WIN)
-    // 64-bit Windows has a bizarrely small 8TB user address space.
-    // Allocates in the 1-5TB region.
-    // TODO(cevans): I think Win 8.1 has 47-bits like Linux.
-    random &= 0x3ffffffffffUL;
-    random += 0x10000000000UL;
+  // 64-bit Windows has a bizarrely small 8TB user address space.
+  // Allocates in the 1-5TB region.
+  // TODO(cevans): I think Win 8.1 has 47-bits like Linux.
+  random &= 0x3ffffffffffUL;
+  random += 0x10000000000UL;
 #elif defined(MEMORY_TOOL_REPLACES_ALLOCATOR)
-    // This range is copied from the TSan source, but works for all tools.
-    random &= 0x007fffffffffUL;
-    random += 0x7e8000000000UL;
+  // This range is copied from the TSan source, but works for all tools.
+  random &= 0x007fffffffffUL;
+  random += 0x7e8000000000UL;
 #else
-    // Linux and OS X support the full 47-bit user space of x64 processors.
-    random &= 0x3fffffffffffUL;
+  // Linux and OS X support the full 47-bit user space of x64 processors.
+  random &= 0x3fffffffffffUL;
 #endif
 #elif CPU(ARM64)
-    // ARM64 on Linux has 39-bit user space.
-    random &= 0x3fffffffffUL;
-    random += 0x1000000000UL;
-#else // !CPU(X86_64) && !CPU(ARM64)
+  // ARM64 on Linux has 39-bit user space.
+  random &= 0x3fffffffffUL;
+  random += 0x1000000000UL;
+#else  // !CPU(X86_64) && !CPU(ARM64)
 #if OS(WIN)
-    // On win32 host systems the randomization plus huge alignment causes
-    // excessive fragmentation. Plus most of these systems lack ASLR, so the
-    // randomization isn't buying anything. In that case we just skip it.
-    // TODO(jschuh): Just dump the randomization when HE-ASLR is present.
-    static BOOL isWow64 = -1;
-    if (isWow64 == -1 && !IsWow64Process(GetCurrentProcess(), &isWow64))
-        isWow64 = FALSE;
-    if (!isWow64)
-        return nullptr;
-#endif // OS(WIN)
-    // This is a good range on Windows, Linux and Mac.
-    // Allocates in the 0.5-1.5GB region.
-    random &= 0x3fffffff;
-    random += 0x20000000;
-#endif // CPU(X86_64)
-    random &= kPageAllocationGranularityBaseMask;
-    return reinterpret_cast<void*>(random);
+  // On win32 host systems the randomization plus huge alignment causes
+  // excessive fragmentation. Plus most of these systems lack ASLR, so the
+  // randomization isn't buying anything. In that case we just skip it.
+  // TODO(jschuh): Just dump the randomization when HE-ASLR is present.
+  static BOOL isWow64 = -1;
+  if (isWow64 == -1 && !IsWow64Process(GetCurrentProcess(), &isWow64))
+    isWow64 = FALSE;
+  if (!isWow64)
+    return nullptr;
+#endif  // OS(WIN)
+  // This is a good range on Windows, Linux and Mac.
+  // Allocates in the 0.5-1.5GB region.
+  random &= 0x3fffffff;
+  random += 0x20000000;
+#endif  // CPU(X86_64)
+  random &= kPageAllocationGranularityBaseMask;
+  return reinterpret_cast<void*>(random);
 }
-
 }