Merge branch 'swift-4.x'swift-5.0alpha2

* swift-4.x: (44 commits) Test-Information: Builds on macOS 10.13.3 with clang trunk. Change-Id: If50381f103b0ad18d038b920d3d43537642141cb
author: Tobias Markmann <tm@ayena.de> 2018-03-20 13:12:10 (GMT)
committer: Tobias Markmann <tm@ayena.de> 2018-03-20 14:48:04 (GMT)
commit: f2c2c7d035029fb9615b42c18ccea83e8e705b10 (patch)
tree: 2f56fb77de0f366528395f21732d418f016f63b5 /3rdParty/Breakpad/src/common/scoped_ptr.h
parent: 44581c5285d13c0ec715b35ddc79177e5ebeef39 (diff)
parent: 5ba3f18ad8efa040d49f36d83ec2e7891a9add9f (diff)
download: swift-1e10c17b3585afb3a4bb0e849263dd463816d2c0.zip
swift-1e10c17b3585afb3a4bb0e849263dd463816d2c0.tar.bz2
1 files changed, 404 insertions, 0 deletions
diff --git a/3rdParty/Breakpad/src/common/scoped_ptr.h b/3rdParty/Breakpad/src/common/scoped_ptr.h
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+// Copyright 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
+// copyright notice, this list of conditions and the following disclaimer
+// in the documentation and/or other materials provided with the
+// distribution.
+//     * Neither the name of Google Inc. nor the names of its
+// contributors may be used to endorse or promote products derived from
+// this software without specific prior written permission.
+//
+// THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+// "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+// LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
+// A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
+// OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
+// SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
+// LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
+// DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
+// THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+// (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
+// OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+
+// Scopers help you manage ownership of a pointer, helping you easily manage the
+// a pointer within a scope, and automatically destroying the pointer at the
+// end of a scope.  There are two main classes you will use, which correspond
+// to the operators new/delete and new[]/delete[].
+//
+// Example usage (scoped_ptr):
+//   {
+//     scoped_ptr<Foo> foo(new Foo("wee"));
+//   }  // foo goes out of scope, releasing the pointer with it.
+//
+//   {
+//     scoped_ptr<Foo> foo;          // No pointer managed.
+//     foo.reset(new Foo("wee"));    // Now a pointer is managed.
+//     foo.reset(new Foo("wee2"));   // Foo("wee") was destroyed.
+//     foo.reset(new Foo("wee3"));   // Foo("wee2") was destroyed.
+//     foo->Method();                // Foo::Method() called.
+//     foo.get()->Method();          // Foo::Method() called.
+//     SomeFunc(foo.release());      // SomeFunc takes ownership, foo no longer
+//                                   // manages a pointer.
+//     foo.reset(new Foo("wee4"));   // foo manages a pointer again.
+//     foo.reset();                  // Foo("wee4") destroyed, foo no longer
+//                                   // manages a pointer.
+//   }  // foo wasn't managing a pointer, so nothing was destroyed.
+//
+// Example usage (scoped_array):
+//   {
+//     scoped_array<Foo> foo(new Foo[100]);
+//     foo.get()->Method();  // Foo::Method on the 0th element.
+//     foo[10].Method();     // Foo::Method on the 10th element.
+//   }
+
+#ifndef COMMON_SCOPED_PTR_H_
+#define COMMON_SCOPED_PTR_H_
+
+// This is an implementation designed to match the anticipated future TR2
+// implementation of the scoped_ptr class, and its closely-related brethren,
+// scoped_array, scoped_ptr_malloc.
+
+#include <assert.h>
+#include <stddef.h>
+#include <stdlib.h>
+
+namespace google_breakpad {
+
+// A scoped_ptr<T> is like a T*, except that the destructor of scoped_ptr<T>
+// automatically deletes the pointer it holds (if any).
+// That is, scoped_ptr<T> owns the T object that it points to.
+// Like a T*, a scoped_ptr<T> may hold either NULL or a pointer to a T object.
+// Also like T*, scoped_ptr<T> is thread-compatible, and once you
+// dereference it, you get the threadsafety guarantees of T.
+//
+// The size of a scoped_ptr is small:
+// sizeof(scoped_ptr<C>) == sizeof(C*)
+template <class C>
+class scoped_ptr {
+ public:
+
+  // The element type
+  typedef C element_type;
+
+  // Constructor.  Defaults to initializing with NULL.
+  // There is no way to create an uninitialized scoped_ptr.
+  // The input parameter must be allocated with new.
+  explicit scoped_ptr(C* p = NULL) : ptr_(p) { }
+
+  // Destructor.  If there is a C object, delete it.
+  // We don't need to test ptr_ == NULL because C++ does that for us.
+  ~scoped_ptr() {
+    enum { type_must_be_complete = sizeof(C) };
+    delete ptr_;
+  }
+
+  // Reset.  Deletes the current owned object, if any.
+  // Then takes ownership of a new object, if given.
+  // this->reset(this->get()) works.
+  void reset(C* p = NULL) {
+    if (p != ptr_) {
+      enum { type_must_be_complete = sizeof(C) };
+      delete ptr_;
+      ptr_ = p;
+    }
+  }
+
+  // Accessors to get the owned object.
+  // operator* and operator-> will assert() if there is no current object.
+  C& operator*() const {
+    assert(ptr_ != NULL);
+    return *ptr_;
+  }
+  C* operator->() const  {
+    assert(ptr_ != NULL);
+    return ptr_;
+  }
+  C* get() const { return ptr_; }
+
+  // Comparison operators.
+  // These return whether two scoped_ptr refer to the same object, not just to
+  // two different but equal objects.
+  bool operator==(C* p) const { return ptr_ == p; }
+  bool operator!=(C* p) const { return ptr_ != p; }
+
+  // Swap two scoped pointers.
+  void swap(scoped_ptr& p2) {
+    C* tmp = ptr_;
+    ptr_ = p2.ptr_;
+    p2.ptr_ = tmp;
+  }
+
+  // Release a pointer.
+  // The return value is the current pointer held by this object.
+  // If this object holds a NULL pointer, the return value is NULL.
+  // After this operation, this object will hold a NULL pointer,
+  // and will not own the object any more.
+  C* release() {
+    C* retVal = ptr_;
+    ptr_ = NULL;
+    return retVal;
+  }
+
+ private:
+  C* ptr_;
+
+  // Forbid comparison of scoped_ptr types.  If C2 != C, it totally doesn't
+  // make sense, and if C2 == C, it still doesn't make sense because you should
+  // never have the same object owned by two different scoped_ptrs.
+  template <class C2> bool operator==(scoped_ptr<C2> const& p2) const;
+  template <class C2> bool operator!=(scoped_ptr<C2> const& p2) const;
+
+  // Disallow evil constructors
+  scoped_ptr(const scoped_ptr&);
+  void operator=(const scoped_ptr&);
+};
+
+// Free functions
+template <class C>
+void swap(scoped_ptr<C>& p1, scoped_ptr<C>& p2) {
+  p1.swap(p2);
+}
+
+template <class C>
+bool operator==(C* p1, const scoped_ptr<C>& p2) {
+  return p1 == p2.get();
+}
+
+template <class C>
+bool operator!=(C* p1, const scoped_ptr<C>& p2) {
+  return p1 != p2.get();
+}
+
+// scoped_array<C> is like scoped_ptr<C>, except that the caller must allocate
+// with new [] and the destructor deletes objects with delete [].
+//
+// As with scoped_ptr<C>, a scoped_array<C> either points to an object
+// or is NULL.  A scoped_array<C> owns the object that it points to.
+// scoped_array<T> is thread-compatible, and once you index into it,
+// the returned objects have only the threadsafety guarantees of T.
+//
+// Size: sizeof(scoped_array<C>) == sizeof(C*)
+template <class C>
+class scoped_array {
+ public:
+
+  // The element type
+  typedef C element_type;
+
+  // Constructor.  Defaults to intializing with NULL.
+  // There is no way to create an uninitialized scoped_array.
+  // The input parameter must be allocated with new [].
+  explicit scoped_array(C* p = NULL) : array_(p) { }
+
+  // Destructor.  If there is a C object, delete it.
+  // We don't need to test ptr_ == NULL because C++ does that for us.
+  ~scoped_array() {
+    enum { type_must_be_complete = sizeof(C) };
+    delete[] array_;
+  }
+
+  // Reset.  Deletes the current owned object, if any.
+  // Then takes ownership of a new object, if given.
+  // this->reset(this->get()) works.
+  void reset(C* p = NULL) {
+    if (p != array_) {
+      enum { type_must_be_complete = sizeof(C) };
+      delete[] array_;
+      array_ = p;
+    }
+  }
+
+  // Get one element of the current object.
+  // Will assert() if there is no current object, or index i is negative.
+  C& operator[](ptrdiff_t i) const {
+    assert(i >= 0);
+    assert(array_ != NULL);
+    return array_[i];
+  }
+
+  // Get a pointer to the zeroth element of the current object.
+  // If there is no current object, return NULL.
+  C* get() const {
+    return array_;
+  }
+
+  // Comparison operators.
+  // These return whether two scoped_array refer to the same object, not just to
+  // two different but equal objects.
+  bool operator==(C* p) const { return array_ == p; }
+  bool operator!=(C* p) const { return array_ != p; }
+
+  // Swap two scoped arrays.
+  void swap(scoped_array& p2) {
+    C* tmp = array_;
+    array_ = p2.array_;
+    p2.array_ = tmp;
+  }
+
+  // Release an array.
+  // The return value is the current pointer held by this object.
+  // If this object holds a NULL pointer, the return value is NULL.
+  // After this operation, this object will hold a NULL pointer,
+  // and will not own the object any more.
+  C* release() {
+    C* retVal = array_;
+    array_ = NULL;
+    return retVal;
+  }
+
+ private:
+  C* array_;
+
+  // Forbid comparison of different scoped_array types.
+  template <class C2> bool operator==(scoped_array<C2> const& p2) const;
+  template <class C2> bool operator!=(scoped_array<C2> const& p2) const;
+
+  // Disallow evil constructors
+  scoped_array(const scoped_array&);
+  void operator=(const scoped_array&);
+};
+
+// Free functions
+template <class C>
+void swap(scoped_array<C>& p1, scoped_array<C>& p2) {
+  p1.swap(p2);
+}
+
+template <class C>
+bool operator==(C* p1, const scoped_array<C>& p2) {
+  return p1 == p2.get();
+}
+
+template <class C>
+bool operator!=(C* p1, const scoped_array<C>& p2) {
+  return p1 != p2.get();
+}
+
+// This class wraps the c library function free() in a class that can be
+// passed as a template argument to scoped_ptr_malloc below.
+class ScopedPtrMallocFree {
+ public:
+  inline void operator()(void* x) const {
+    free(x);
+  }
+};
+
+// scoped_ptr_malloc<> is similar to scoped_ptr<>, but it accepts a
+// second template argument, the functor used to free the object.
+
+template<class C, class FreeProc = ScopedPtrMallocFree>
+class scoped_ptr_malloc {
+ public:
+
+  // The element type
+  typedef C element_type;
+
+  // Constructor.  Defaults to initializing with NULL.
+  // There is no way to create an uninitialized scoped_ptr.
+  // The input parameter must be allocated with an allocator that matches the
+  // Free functor.  For the default Free functor, this is malloc, calloc, or
+  // realloc.
+  explicit scoped_ptr_malloc(C* p = NULL): ptr_(p) {}
+
+  // Destructor.  If there is a C object, call the Free functor.
+  ~scoped_ptr_malloc() {
+    reset();
+  }
+
+  // Reset.  Calls the Free functor on the current owned object, if any.
+  // Then takes ownership of a new object, if given.
+  // this->reset(this->get()) works.
+  void reset(C* p = NULL) {
+    if (ptr_ != p) {
+      FreeProc free_proc;
+      free_proc(ptr_);
+      ptr_ = p;
+    }
+  }
+
+  // Get the current object.
+  // operator* and operator-> will cause an assert() failure if there is
+  // no current object.
+  C& operator*() const {
+    assert(ptr_ != NULL);
+    return *ptr_;
+  }
+
+  C* operator->() const {
+    assert(ptr_ != NULL);
+    return ptr_;
+  }
+
+  C* get() const {
+    return ptr_;
+  }
+
+  // Comparison operators.
+  // These return whether a scoped_ptr_malloc and a plain pointer refer
+  // to the same object, not just to two different but equal objects.
+  // For compatibility with the boost-derived implementation, these
+  // take non-const arguments.
+  bool operator==(C* p) const {
+    return ptr_ == p;
+  }
+
+  bool operator!=(C* p) const {
+    return ptr_ != p;
+  }
+
+  // Swap two scoped pointers.
+  void swap(scoped_ptr_malloc & b) {
+    C* tmp = b.ptr_;
+    b.ptr_ = ptr_;
+    ptr_ = tmp;
+  }
+
+  // Release a pointer.
+  // The return value is the current pointer held by this object.
+  // If this object holds a NULL pointer, the return value is NULL.
+  // After this operation, this object will hold a NULL pointer,
+  // and will not own the object any more.
+  C* release() {
+    C* tmp = ptr_;
+    ptr_ = NULL;
+    return tmp;
+  }
+
+ private:
+  C* ptr_;
+
+  // no reason to use these: each scoped_ptr_malloc should have its own object
+  template <class C2, class GP>
+  bool operator==(scoped_ptr_malloc<C2, GP> const& p) const;
+  template <class C2, class GP>
+  bool operator!=(scoped_ptr_malloc<C2, GP> const& p) const;
+
+  // Disallow evil constructors
+  scoped_ptr_malloc(const scoped_ptr_malloc&);
+  void operator=(const scoped_ptr_malloc&);
+};
+
+template<class C, class FP> inline
+void swap(scoped_ptr_malloc<C, FP>& a, scoped_ptr_malloc<C, FP>& b) {
+  a.swap(b);
+}
+
+template<class C, class FP> inline
+bool operator==(C* p, const scoped_ptr_malloc<C, FP>& b) {
+  return p == b.get();
+}
+
+template<class C, class FP> inline
+bool operator!=(C* p, const scoped_ptr_malloc<C, FP>& b) {
+  return p != b.get();
+}
+
+}  // namespace google_breakpad
+
+#endif  // COMMON_SCOPED_PTR_H_
author	Tobias Markmann <tm@ayena.de>	2018-03-20 13:12:10 (GMT)
committer	Tobias Markmann <tm@ayena.de>	2018-03-20 14:48:04 (GMT)
commit	f2c2c7d035029fb9615b42c18ccea83e8e705b10 (patch)
tree	2f56fb77de0f366528395f21732d418f016f63b5 /3rdParty/Breakpad/src/common/scoped_ptr.h
parent	44581c5285d13c0ec715b35ddc79177e5ebeef39 (diff)
parent	5ba3f18ad8efa040d49f36d83ec2e7891a9add9f (diff)
download	swift-1e10c17b3585afb3a4bb0e849263dd463816d2c0.zip swift-1e10c17b3585afb3a4bb0e849263dd463816d2c0.tar.bz2