Swiftdiff options
| author | Tobias Markmann <tm@ayena.de> | 2017-01-10 20:22:26 (GMT) |
|---|---|---|
| committer | Tobias Markmann <tm@ayena.de> | 2017-01-11 18:23:48 (GMT) |
| commit | 3b0cde2e6dbf26a01a59b0004e4041199731cbc8 (patch) | |
| tree | 0b2ba6addb161f1d3e437a64685ea797341a149b /3rdParty/GoogleTest/src/googletest/include/gtest/internal/gtest-linked_ptr.h | |
| parent | a0c339f80e4585341179edef1898defd21a0d36a (diff) | |
| download | swift-3b0cde2e6dbf26a01a59b0004e4041199731cbc8.zip swift-3b0cde2e6dbf26a01a59b0004e4041199731cbc8.tar.bz2 | |
Integrate googletest and googlemock libraries to 3rdParty
googletest and googlemock from release 1.8.0 have been copied
to the 3rdParty folder.
With this commit tests for Swift project can also written
using googletest and googlemock APIs. The test runners will
execute test suites written to either test library.
Passing —-xml to a test runner will now create two test
report XML files, namely $programName-report.cppunit.xml and
$programName-report.gtest.xml.
The ByteArrayTest has been converted to use googletest
instead of googlemock to serve as an example and test the
integration.
Test-Information:
Build all tests via ‘./scons test=all’ and verified all tests
are run.
Build all tests via ‘./scons test=all checker_report=1’ and
verified that two report XML files are generated per test
runner executed.
Change-Id: I81a9fb2c7ea5612fc1b34eef70ed7e711bfeea81
Diffstat (limited to '3rdParty/GoogleTest/src/googletest/include/gtest/internal/gtest-linked_ptr.h')
| -rw-r--r-- | 3rdParty/GoogleTest/src/googletest/include/gtest/internal/gtest-linked_ptr.h | 243 |
1 files changed, 243 insertions, 0 deletions
diff --git a/3rdParty/GoogleTest/src/googletest/include/gtest/internal/gtest-linked_ptr.h b/3rdParty/GoogleTest/src/googletest/include/gtest/internal/gtest-linked_ptr.h new file mode 100644 index 0000000..3602942 --- /dev/null +++ b/3rdParty/GoogleTest/src/googletest/include/gtest/internal/gtest-linked_ptr.h @@ -0,0 +1,243 @@ +// Copyright 2003 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. +// +// Authors: Dan Egnor (egnor@google.com) +// +// A "smart" pointer type with reference tracking. Every pointer to a +// particular object is kept on a circular linked list. When the last pointer +// to an object is destroyed or reassigned, the object is deleted. +// +// Used properly, this deletes the object when the last reference goes away. +// There are several caveats: +// - Like all reference counting schemes, cycles lead to leaks. +// - Each smart pointer is actually two pointers (8 bytes instead of 4). +// - Every time a pointer is assigned, the entire list of pointers to that +// object is traversed. This class is therefore NOT SUITABLE when there +// will often be more than two or three pointers to a particular object. +// - References are only tracked as long as linked_ptr<> objects are copied. +// If a linked_ptr<> is converted to a raw pointer and back, BAD THINGS +// will happen (double deletion). +// +// A good use of this class is storing object references in STL containers. +// You can safely put linked_ptr<> in a vector<>. +// Other uses may not be as good. +// +// Note: If you use an incomplete type with linked_ptr<>, the class +// *containing* linked_ptr<> must have a constructor and destructor (even +// if they do nothing!). +// +// Bill Gibbons suggested we use something like this. +// +// Thread Safety: +// Unlike other linked_ptr implementations, in this implementation +// a linked_ptr object is thread-safe in the sense that: +// - it's safe to copy linked_ptr objects concurrently, +// - it's safe to copy *from* a linked_ptr and read its underlying +// raw pointer (e.g. via get()) concurrently, and +// - it's safe to write to two linked_ptrs that point to the same +// shared object concurrently. +// TODO(wan@google.com): rename this to safe_linked_ptr to avoid +// confusion with normal linked_ptr. + +#ifndef GTEST_INCLUDE_GTEST_INTERNAL_GTEST_LINKED_PTR_H_ +#define GTEST_INCLUDE_GTEST_INTERNAL_GTEST_LINKED_PTR_H_ + +#include <stdlib.h> +#include <assert.h> + +#include "gtest/internal/gtest-port.h" + +namespace testing { +namespace internal { + +// Protects copying of all linked_ptr objects. +GTEST_API_ GTEST_DECLARE_STATIC_MUTEX_(g_linked_ptr_mutex); + +// This is used internally by all instances of linked_ptr<>. It needs to be +// a non-template class because different types of linked_ptr<> can refer to +// the same object (linked_ptr<Superclass>(obj) vs linked_ptr<Subclass>(obj)). +// So, it needs to be possible for different types of linked_ptr to participate +// in the same circular linked list, so we need a single class type here. +// +// DO NOT USE THIS CLASS DIRECTLY YOURSELF. Use linked_ptr<T>. +class linked_ptr_internal { + public: + // Create a new circle that includes only this instance. + void join_new() { + next_ = this; + } + + // Many linked_ptr operations may change p.link_ for some linked_ptr + // variable p in the same circle as this object. Therefore we need + // to prevent two such operations from occurring concurrently. + // + // Note that different types of linked_ptr objects can coexist in a + // circle (e.g. linked_ptr<Base>, linked_ptr<Derived1>, and + // linked_ptr<Derived2>). Therefore we must use a single mutex to + // protect all linked_ptr objects. This can create serious + // contention in production code, but is acceptable in a testing + // framework. + + // Join an existing circle. + void join(linked_ptr_internal const* ptr) + GTEST_LOCK_EXCLUDED_(g_linked_ptr_mutex) { + MutexLock lock(&g_linked_ptr_mutex); + + linked_ptr_internal const* p = ptr; + while (p->next_ != ptr) { + assert(p->next_ != this && + "Trying to join() a linked ring we are already in. " + "Is GMock thread safety enabled?"); + p = p->next_; + } + p->next_ = this; + next_ = ptr; + } + + // Leave whatever circle we're part of. Returns true if we were the + // last member of the circle. Once this is done, you can join() another. + bool depart() + GTEST_LOCK_EXCLUDED_(g_linked_ptr_mutex) { + MutexLock lock(&g_linked_ptr_mutex); + + if (next_ == this) return true; + linked_ptr_internal const* p = next_; + while (p->next_ != this) { + assert(p->next_ != next_ && + "Trying to depart() a linked ring we are not in. " + "Is GMock thread safety enabled?"); + p = p->next_; + } + p->next_ = next_; + return false; + } + + private: + mutable linked_ptr_internal const* next_; +}; + +template <typename T> +class linked_ptr { + public: + typedef T element_type; + + // Take over ownership of a raw pointer. This should happen as soon as + // possible after the object is created. + explicit linked_ptr(T* ptr = NULL) { capture(ptr); } + ~linked_ptr() { depart(); } + + // Copy an existing linked_ptr<>, adding ourselves to the list of references. + template <typename U> linked_ptr(linked_ptr<U> const& ptr) { copy(&ptr); } + linked_ptr(linked_ptr const& ptr) { // NOLINT + assert(&ptr != this); + copy(&ptr); + } + + // Assignment releases the old value and acquires the new. + template <typename U> linked_ptr& operator=(linked_ptr<U> const& ptr) { + depart(); + copy(&ptr); + return *this; + } + + linked_ptr& operator=(linked_ptr const& ptr) { + if (&ptr != this) { + depart(); + copy(&ptr); + } + return *this; + } + + // Smart pointer members. + void reset(T* ptr = NULL) { + depart(); + capture(ptr); + } + T* get() const { return value_; } + T* operator->() const { return value_; } + T& operator*() const { return *value_; } + + bool operator==(T* p) const { return value_ == p; } + bool operator!=(T* p) const { return value_ != p; } + template <typename U> + bool operator==(linked_ptr<U> const& ptr) const { + return value_ == ptr.get(); + } + template <typename U> + bool operator!=(linked_ptr<U> const& ptr) const { + return value_ != ptr.get(); + } + + private: + template <typename U> + friend class linked_ptr; + + T* value_; + linked_ptr_internal link_; + + void depart() { + if (link_.depart()) delete value_; + } + + void capture(T* ptr) { + value_ = ptr; + link_.join_new(); + } + + template <typename U> void copy(linked_ptr<U> const* ptr) { + value_ = ptr->get(); + if (value_) + link_.join(&ptr->link_); + else + link_.join_new(); + } +}; + +template<typename T> inline +bool operator==(T* ptr, const linked_ptr<T>& x) { + return ptr == x.get(); +} + +template<typename T> inline +bool operator!=(T* ptr, const linked_ptr<T>& x) { + return ptr != x.get(); +} + +// A function to convert T* into linked_ptr<T> +// Doing e.g. make_linked_ptr(new FooBarBaz<type>(arg)) is a shorter notation +// for linked_ptr<FooBarBaz<type> >(new FooBarBaz<type>(arg)) +template <typename T> +linked_ptr<T> make_linked_ptr(T* ptr) { + return linked_ptr<T>(ptr); +} + +} // namespace internal +} // namespace testing + +#endif // GTEST_INCLUDE_GTEST_INTERNAL_GTEST_LINKED_PTR_H_ |