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authorDaniel Baumann <daniel.baumann@progress-linux.org>2024-04-27 18:24:20 +0000
committerDaniel Baumann <daniel.baumann@progress-linux.org>2024-04-27 18:24:20 +0000
commit483eb2f56657e8e7f419ab1a4fab8dce9ade8609 (patch)
treee5d88d25d870d5dedacb6bbdbe2a966086a0a5cf /src/boost/libs/thread/example/synchronized_person.cpp
parentInitial commit. (diff)
downloadceph-upstream.tar.xz
ceph-upstream.zip
Adding upstream version 14.2.21.upstream/14.2.21upstream
Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>
Diffstat (limited to 'src/boost/libs/thread/example/synchronized_person.cpp')
-rw-r--r--src/boost/libs/thread/example/synchronized_person.cpp282
1 files changed, 282 insertions, 0 deletions
diff --git a/src/boost/libs/thread/example/synchronized_person.cpp b/src/boost/libs/thread/example/synchronized_person.cpp
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+++ b/src/boost/libs/thread/example/synchronized_person.cpp
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+// (C) Copyright 2012 Vicente Botet
+//
+// Distributed under the Boost Software License, Version 1.0. (See accompanying
+// file LICENSE_1_0.txt or copy at http://www.boost.org/LICENSE_1_0.txt)
+
+#define BOOST_THREAD_VERSION 4
+
+#include <iostream>
+#include <string>
+#include <boost/thread/synchronized_value.hpp>
+
+//class SafePerson {
+//public:
+// std::string GetName() const {
+// const_unique_access<std::string> name(nameGuard);
+// return *name;
+// }
+// void SetName(const std::string& newName) {
+// unique_access<std::string> name(nameGuard);
+// *name = newName;
+// }
+//private:
+// unique_access_guard<std::string> nameGuard;
+//};
+
+class SafePerson {
+public:
+ std::string GetName() const {
+ return *name;
+ }
+ void SetName(const std::string& newName) {
+ *name = newName;
+ }
+
+private:
+ boost::synchronized_value<std::string> name;
+};
+
+class Person {
+public:
+ std::string GetName() const {
+ return name;
+ }
+ void SetName(const std::string& newName) {
+ name = newName;
+ }
+private:
+ std::string name;
+};
+typedef boost::synchronized_value<Person> Person_ts;
+
+
+//class SafeMemberPerson {
+//public:
+// SafeMemberPerson(unsigned int age) :
+// memberGuard(age)
+// { }
+// std::string GetName() const {
+// const_unique_access<Member> member(memberGuard);
+// return member->name;
+// }
+// void SetName(const std::string& newName) {
+// unique_access<Member> member(memberGuard);
+// member->name = newName;
+// }
+//private:
+// struct Member
+// {
+// Member(unsigned int age) :
+// age(age)
+// { }
+// std::string name;
+// unsigned int age;
+// };
+// unique_access_guard<Member> memberGuard;
+//};
+
+class SafeMemberPerson {
+public:
+ SafeMemberPerson(unsigned int age) :
+ member(Member(age))
+ { }
+ std::string GetName() const {
+ return member->name;
+ }
+ void SetName(const std::string& newName) {
+ member->name = newName;
+ }
+private:
+ struct Member {
+ Member(unsigned int age) :
+ age(age)
+ { }
+ std::string name;
+ unsigned int age;
+ };
+ boost::synchronized_value<Member> member;
+};
+
+
+class Person2 {
+public:
+ Person2(unsigned int age) : age_(age)
+ {}
+ std::string GetName() const {
+ return name_;
+ }
+ void SetName(const std::string& newName) {
+ name_ = newName;
+ }
+ unsigned int GetAge() const {
+ return age_;
+ }
+
+private:
+ std::string name_;
+ unsigned int age_;
+};
+typedef boost::synchronized_value<Person2> Person2_ts;
+
+//===================
+
+//class HelperPerson {
+//public:
+// HelperPerson(unsigned int age) :
+// memberGuard(age)
+// { }
+// std::string GetName() const {
+// const_unique_access<Member> member(memberGuard);
+// Invariant(member);
+// return member->name;
+// }
+// void SetName(const std::string& newName) {
+// unique_access<Member> member(memberGuard);
+// Invariant(member);
+// member->name = newName;
+// }
+//private:
+// void Invariant(const_unique_access<Member>& member) const {
+// if (member->age < 0) throw std::runtime_error("Age cannot be negative");
+// }
+// struct Member {
+// Member(unsigned int age) :
+// age(age)
+// { }
+// std::string name;
+// unsigned int age;
+// };
+// unique_access_guard<Member> memberGuard;
+//};
+
+class HelperPerson {
+public:
+ HelperPerson(unsigned int age) :
+ member(age)
+ { }
+ std::string GetName() const {
+#if ! defined BOOST_NO_CXX11_AUTO_DECLARATIONS
+ auto memberSync = member.synchronize();
+#else
+ boost::const_strict_lock_ptr<Member> memberSync = member.synchronize();
+#endif
+ Invariant(memberSync);
+ return memberSync->name;
+ }
+ void SetName(const std::string& newName) {
+#if ! defined BOOST_NO_CXX11_AUTO_DECLARATIONS
+ auto memberSync = member.synchronize();
+#else
+ boost::strict_lock_ptr<Member> memberSync = member.synchronize();
+#endif
+ Invariant(memberSync);
+ memberSync->name = newName;
+ }
+private:
+ struct Member {
+ Member(unsigned int age) :
+ age(age)
+ { }
+ std::string name;
+ unsigned int age;
+ };
+ void Invariant(boost::const_strict_lock_ptr<Member> & mbr) const
+ {
+ if (mbr->age < 1) throw std::runtime_error("Age cannot be negative");
+ }
+ boost::synchronized_value<Member> member;
+};
+
+class Person3 {
+public:
+ Person3(unsigned int age) :
+ age_(age)
+ { }
+ std::string GetName() const {
+ Invariant();
+ return name_;
+ }
+ void SetName(const std::string& newName) {
+ Invariant();
+ name_ = newName;
+ }
+private:
+ std::string name_;
+ unsigned int age_;
+ void Invariant() const {
+ if (age_ < 1) throw std::runtime_error("Age cannot be negative");
+ }
+};
+
+typedef boost::synchronized_value<Person3> Person3_ts;
+
+int main()
+{
+ {
+ SafePerson p;
+ p.SetName("Vicente");
+ }
+ {
+ Person_ts p;
+ p->SetName("Vicente");
+ }
+ {
+ SafeMemberPerson p(1);
+ p.SetName("Vicente");
+ }
+ {
+ Person2_ts p(1);
+ p->SetName("Vicente");
+ }
+ {
+ HelperPerson p(1);
+ p.SetName("Vicente");
+ }
+ {
+ Person3_ts p(1);
+ p->SetName("Vicente");
+ }
+ {
+ Person3_ts p1(1);
+ Person3_ts p2(2);
+ Person3_ts p3(3);
+#if ! defined BOOST_NO_CXX11_AUTO_DECLARATIONS
+ auto lk1 = p1.unique_synchronize(boost::defer_lock);
+ auto lk2 = p2.unique_synchronize(boost::defer_lock);
+ auto lk3 = p3.unique_synchronize(boost::defer_lock);
+#else
+ boost::unique_lock_ptr<Person3> lk1 = p1.unique_synchronize(boost::defer_lock);
+ boost::unique_lock_ptr<Person3> lk2 = p2.unique_synchronize(boost::defer_lock);
+ boost::unique_lock_ptr<Person3> lk3 = p3.unique_synchronize(boost::defer_lock);
+#endif
+ boost::lock(lk1,lk2,lk3);
+
+ lk1->SetName("Carmen");
+ lk2->SetName("Javier");
+ lk3->SetName("Matias");
+ }
+#if ! defined BOOST_NO_CXX11_AUTO_DECLARATIONS \
+&& ! defined(BOOST_THREAD_NO_SYNCHRONIZE)
+ {
+ Person3_ts p1(1);
+ Person3_ts p2(2);
+ Person3_ts p3(3);
+
+ auto t = boost::synchronize(p1,p2,p3);
+ std::get<0>(t)->SetName("Carmen");
+ std::get<1>(t)->SetName("Javier");
+ std::get<2>(t)->SetName("Matias");
+ }
+ {
+ const Person3_ts p1(1);
+ Person3_ts p2(2);
+ const Person3_ts p3(3);
+
+ auto t = boost::synchronize(p1,p2,p3);
+ //std::get<0>(t)->SetName("Carmen");
+ std::get<1>(t)->SetName("Javier");
+ //std::get<2>(t)->SetName("Matias");
+ }
+#endif
+ return 0;
+}