The Tor Browser: comparison toolkit/crashreporter/google-breakpad/src/common/scoped

--1:000000000000
+:e438ea1243c8
+//  (C) Copyright Greg Colvin and Beman Dawes 1998, 1999.
+//  Copyright (c) 2001, 2002 Peter Dimov
+//
+//  Permission to copy, use, modify, sell and distribute this software
+//  is granted provided this copyright notice appears in all copies.
+//  This software is provided "as is" without express or implied
+//  warranty, and with no claim as to its suitability for any purpose.
+//
+//  See http://www.boost.org/libs/smart_ptr/scoped_ptr.htm for documentation.
+//
+//  scoped_ptr mimics a built-in pointer except that it guarantees deletion
+//  of the object pointed to, either on destruction of the scoped_ptr or via
+//  an explicit reset(). scoped_ptr is a simple solution for simple needs;
+//  use shared_ptr or std::auto_ptr if your needs are more complex.
+//  *** NOTE ***
+//  If your scoped_ptr is a class member of class FOO pointing to a
+//  forward declared type BAR (as shown below), then you MUST use a non-inlined
+//  version of the destructor.  The destructor of a scoped_ptr (called from
+//  FOO's destructor) must have a complete definition of BAR in order to
+//  destroy it.  Example:
+//
+//  -- foo.h --
+//  class BAR;
+//
+//  class FOO {
+//   public:
+//    FOO();
+//    ~FOO();  // Required for sources that instantiate class FOO to compile!
+//
+//   private:
+//    scoped_ptr<BAR> bar_;
+//  };
+//
+//  -- foo.cc --
+//  #include "foo.h"
+//  FOO::~FOO() {} // Empty, but must be non-inlined to FOO's class definition.
+//  scoped_ptr_malloc added by Google
+//  When one of these goes out of scope, instead of doing a delete or
+//  delete[], it calls free().  scoped_ptr_malloc<char> is likely to see
+//  much more use than any other specializations.
+//  release() added by Google
+//  Use this to conditionally transfer ownership of a heap-allocated object
+//  to the caller, usually on method success.
+#ifndef COMMON_SCOPED_PTR_H_
+#define COMMON_SCOPED_PTR_H_
+#include <cstddef>            // for std::ptrdiff_t
+#include <assert.h>           // for assert
+#include <stdlib.h>           // for free() decl
+namespace google_breakpad {
+template <typename T>
+class scoped_ptr {
+private:
+T* ptr;
+scoped_ptr(scoped_ptr const &);
+scoped_ptr & operator=(scoped_ptr const &);
+public:
+typedef T element_type;
+explicit scoped_ptr(T* p = 0): ptr(p) {}
+~scoped_ptr() {
+typedef char type_must_be_complete[sizeof(T)];
+delete ptr;
+}
+void reset(T* p = 0) {
+typedef char type_must_be_complete[sizeof(T)];
+if (ptr != p) {
+delete ptr;
+ptr = p;
+}
+}
+T& operator*() const {
+assert(ptr != 0);
+return *ptr;
+}
+T* operator->() const  {
+assert(ptr != 0);
+return ptr;
+}
+bool operator==(T* p) const {
+return ptr == p;
+}
+bool operator!=(T* p) const {
+return ptr != p;
+}
+T* get() const  {
+return ptr;
+}
+void swap(scoped_ptr & b) {
+T* tmp = b.ptr;
+b.ptr = ptr;
+ptr = tmp;
+}
+T* release() {
+T* tmp = ptr;
+ptr = 0;
+return tmp;
+}
+private:
+// no reason to use these: each scoped_ptr should have its own object
+template <typename U> bool operator==(scoped_ptr<U> const& p) const;
+template <typename U> bool operator!=(scoped_ptr<U> const& p) const;
+};
+template<typename T> inline
+void swap(scoped_ptr<T>& a, scoped_ptr<T>& b) {
+a.swap(b);
+}
+template<typename T> inline
+bool operator==(T* p, const scoped_ptr<T>& b) {
+return p == b.get();
+}
+template<typename T> inline
+bool operator!=(T* p, const scoped_ptr<T>& b) {
+return p != b.get();
+}
+//  scoped_array extends scoped_ptr to arrays. Deletion of the array pointed to
+//  is guaranteed, either on destruction of the scoped_array or via an explicit
+//  reset(). Use shared_array or std::vector if your needs are more complex.
+template<typename T>
+class scoped_array {
+private:
+T* ptr;
+scoped_array(scoped_array const &);
+scoped_array & operator=(scoped_array const &);
+public:
+typedef T element_type;
+explicit scoped_array(T* p = 0) : ptr(p) {}
+~scoped_array() {
+typedef char type_must_be_complete[sizeof(T)];
+delete[] ptr;
+}
+void reset(T* p = 0) {
+typedef char type_must_be_complete[sizeof(T)];
+if (ptr != p) {
+delete [] ptr;
+ptr = p;
+}
+}
+T& operator[](std::ptrdiff_t i) const {
+assert(ptr != 0);
+assert(i >= 0);
+return ptr[i];
+}
+bool operator==(T* p) const {
+return ptr == p;
+}
+bool operator!=(T* p) const {
+return ptr != p;
+}
+T* get() const {
+return ptr;
+}
+void swap(scoped_array & b) {
+T* tmp = b.ptr;
+b.ptr = ptr;
+ptr = tmp;
+}
+T* release() {
+T* tmp = ptr;
+ptr = 0;
+return tmp;
+}
+private:
+// no reason to use these: each scoped_array should have its own object
+template <typename U> bool operator==(scoped_array<U> const& p) const;
+template <typename U> bool operator!=(scoped_array<U> const& p) const;
+};
+template<class T> inline
+void swap(scoped_array<T>& a, scoped_array<T>& b) {
+a.swap(b);
+}
+template<typename T> inline
+bool operator==(T* p, const scoped_array<T>& b) {
+return p == b.get();
+}
+template<typename T> inline
+bool operator!=(T* p, const scoped_array<T>& b) {
+return p != b.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<typename T, typename FreeProc = ScopedPtrMallocFree>
+class scoped_ptr_malloc {
+private:
+T* ptr;
+scoped_ptr_malloc(scoped_ptr_malloc const &);
+scoped_ptr_malloc & operator=(scoped_ptr_malloc const &);
+public:
+typedef T element_type;
+explicit scoped_ptr_malloc(T* p = 0): ptr(p) {}
+~scoped_ptr_malloc() {
+typedef char type_must_be_complete[sizeof(T)];
+free_((void*) ptr);
+}
+void reset(T* p = 0) {
+typedef char type_must_be_complete[sizeof(T)];
+if (ptr != p) {
+free_((void*) ptr);
+ptr = p;
+}
+}
+T& operator*() const {
+assert(ptr != 0);
+return *ptr;
+}
+T* operator->() const {
+assert(ptr != 0);
+return ptr;
+}
+bool operator==(T* p) const {
+return ptr == p;
+}
+bool operator!=(T* p) const {
+return ptr != p;
+}
+T* get() const {
+return ptr;
+}
+void swap(scoped_ptr_malloc & b) {
+T* tmp = b.ptr;
+b.ptr = ptr;
+ptr = tmp;
+}
+T* release() {
+T* tmp = ptr;
+ptr = 0;
+return tmp;
+}
+private:
+// no reason to use these: each scoped_ptr_malloc should have its own object
+template <typename U, typename GP>
+bool operator==(scoped_ptr_malloc<U, GP> const& p) const;
+template <typename U, typename GP>
+bool operator!=(scoped_ptr_malloc<U, GP> const& p) const;
+static FreeProc const free_;
+};
+template<typename T, typename FP>
+FP const scoped_ptr_malloc<T,FP>::free_ = FP();
+template<typename T, typename FP> inline
+void swap(scoped_ptr_malloc<T,FP>& a, scoped_ptr_malloc<T,FP>& b) {
+a.swap(b);
+}
+template<typename T, typename FP> inline
+bool operator==(T* p, const scoped_ptr_malloc<T,FP>& b) {
+return p == b.get();
+}
+template<typename T, typename FP> inline
+bool operator!=(T* p, const scoped_ptr_malloc<T,FP>& b) {
+return p != b.get();
+}
+}  // namespace google_breakpad
+#endif  // COMMON_SCOPED_PTR_H_

The Tor Browser / file comparison

comparison: toolkit/crashreporter/google-breakpad/src/common/scoped_ptr.h

toolkit/crashreporter/google-breakpad/src/common/scoped_ptr.h