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+/**
+ * @file coroutine_test.cpp
+ * @author Nat Goodspeed
+ * @date 2009-04-22
+ * @brief Test for coroutine.
+ *
+ * $LicenseInfo:firstyear=2009&license=viewergpl$
+ * Copyright (c) 2009, Linden Research, Inc.
+ * $/LicenseInfo$
+ */
+
+/*****************************************************************************/
+// test<1>() is cloned from a Boost.Coroutine example program whose copyright
+// info is reproduced here:
+/*---------------------------------------------------------------------------*/
+// Copyright (c) 2006, Giovanni P. Deretta
+//
+// This code may be used under either of the following two licences:
+//
+// Permission is hereby granted, free of charge, to any person obtaining a copy
+// of this software and associated documentation files (the "Software"), to deal
+// in the Software without restriction, including without limitation the rights
+// to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+// copies of the Software, and to permit persons to whom the Software is
+// furnished to do so, subject to the following conditions:
+//
+// The above copyright notice and this permission notice shall be included in
+// all copies or substantial portions of the Software.
+//
+// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+// IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+// FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
+// THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+// LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+// OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
+// THE SOFTWARE. OF SUCH DAMAGE.
+//
+// Or:
+//
+// 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)
+/*****************************************************************************/
+
+// On some platforms, Boost.Coroutine must #define magic symbols before
+// #including platform-API headers. Naturally, that's ineffective unless the
+// Boost.Coroutine #include is the *first* #include of the platform header.
+// That means that client code must generally #include Boost.Coroutine headers
+// before anything else.
+#include <boost/coroutine/coroutine.hpp>
+// Normally, lleventcoro.h obviates future.hpp. We only include this because
+// we implement a "by hand" test of future functionality.
+#include <boost/coroutine/future.hpp>
+#include <boost/bind.hpp>
+#include <boost/range.hpp>
+
+#include "linden_common.h"
+
+#include <iostream>
+#include <string>
+
+#include "../test/lltut.h"
+#include "llsd.h"
+#include "llevents.h"
+#include "tests/wrapllerrs.h"
+#include "stringize.h"
+#include "lleventcoro.h"
+#include "../test/debug.h"
+
+/*****************************************************************************
+* from the banana.cpp example program borrowed for test<1>()
+*****************************************************************************/
+namespace coroutines = boost::coroutines;
+using coroutines::coroutine;
+
+template<typename Iter>
+bool match(Iter first, Iter last, std::string match) {
+ std::string::iterator i = match.begin();
+ i != match.end();
+ for(; (first != last) && (i != match.end()); ++i) {
+ if (*first != *i)
+ return false;
+ ++first;
+ }
+ return i == match.end();
+}
+
+template<typename BidirectionalIterator>
+BidirectionalIterator
+match_substring(BidirectionalIterator begin,
+ BidirectionalIterator end,
+ std::string xmatch,
+ BOOST_DEDUCED_TYPENAME coroutine<BidirectionalIterator(void)>::self& self) {
+ BidirectionalIterator begin_ = begin;
+ for(; begin != end; ++begin)
+ if(match(begin, end, xmatch)) {
+ self.yield(begin);
+ }
+ return end;
+}
+
+typedef coroutine<std::string::iterator(void)> match_coroutine_type;
+
+/*****************************************************************************
+* Test helpers
+*****************************************************************************/
+// I suspect this will be typical of coroutines used in Linden software
+typedef boost::coroutines::coroutine<void()> coroutine_type;
+
+/// Simulate an event API whose response is immediate: sent on receipt of the
+/// initial request, rather than after some delay. This is the case that
+/// distinguishes postAndWait() from calling post(), then calling
+/// waitForEventOn().
+class ImmediateAPI
+{
+public:
+ ImmediateAPI():
+ mPump("immediate", true)
+ {
+ mPump.listen("API", boost::bind(&ImmediateAPI::operator(), this, _1));
+ }
+
+ LLEventPump& getPump() { return mPump; }
+
+ // Invoke this with an LLSD map containing:
+ // ["value"]: Integer value. We will reply with ["value"] + 1.
+ // ["reply"]: Name of LLEventPump on which to send success response.
+ // ["error"]: Name of LLEventPump on which to send error response.
+ // ["fail"]: Presence of this key selects ["error"], else ["success"] as
+ // the name of the pump on which to send the response.
+ bool operator()(const LLSD& event) const
+ {
+ LLSD::Integer value(event["value"]);
+ LLSD::String replyPumpName(event.has("fail")? "error" : "reply");
+ LLEventPumps::instance().obtain(event[replyPumpName]).post(value + 1);
+ return false;
+ }
+
+private:
+ LLEventStream mPump;
+};
+
+/*****************************************************************************
+* TUT
+*****************************************************************************/
+namespace tut
+{
+ struct coroutine_data
+ {
+ // Define coroutine bodies as methods here so they can use ensure*()
+
+ void explicit_wait(coroutine_type::self& self)
+ {
+ BEGIN
+ {
+ // ... do whatever preliminary stuff must happen ...
+
+ // declare the future
+ boost::coroutines::future<LLSD> future(self);
+ // tell the future what to wait for
+ LLTempBoundListener connection(
+ LLEventPumps::instance().obtain("source").listen("coro", voidlistener(boost::coroutines::make_callback(future))));
+ ensure("Not yet", ! future);
+ // attempting to dereference ("resolve") the future causes the calling
+ // coroutine to wait for it
+ debug("about to wait");
+ result = *future;
+ ensure("Got it", future);
+ }
+ END
+ }
+
+ void waitForEventOn1(coroutine_type::self& self)
+ {
+ BEGIN
+ {
+ result = waitForEventOn(self, "source");
+ }
+ END
+ }
+
+ void waitForEventOn2(coroutine_type::self& self)
+ {
+ BEGIN
+ {
+ LLEventWithID pair = waitForEventOn(self, "reply", "error");
+ result = pair.first;
+ which = pair.second;
+ debug(STRINGIZE("result = " << result << ", which = " << which));
+ }
+ END
+ }
+
+ void postAndWait1(coroutine_type::self& self)
+ {
+ BEGIN
+ {
+ result = postAndWait(self,
+ LLSD().insert("value", 17), // request event
+ immediateAPI.getPump(), // requestPump
+ "reply1", // replyPump
+ "reply"); // request["reply"] = name
+ }
+ END
+ }
+
+ void postAndWait2(coroutine_type::self& self)
+ {
+ BEGIN
+ {
+ LLEventWithID pair = ::postAndWait2(self,
+ LLSD().insert("value", 18),
+ immediateAPI.getPump(),
+ "reply2",
+ "error2",
+ "reply",
+ "error");
+ result = pair.first;
+ which = pair.second;
+ debug(STRINGIZE("result = " << result << ", which = " << which));
+ }
+ END
+ }
+
+ void postAndWait2_1(coroutine_type::self& self)
+ {
+ BEGIN
+ {
+ LLEventWithID pair = ::postAndWait2(self,
+ LLSD().insert("value", 18).insert("fail", LLSD()),
+ immediateAPI.getPump(),
+ "reply2",
+ "error2",
+ "reply",
+ "error");
+ result = pair.first;
+ which = pair.second;
+ debug(STRINGIZE("result = " << result << ", which = " << which));
+ }
+ END
+ }
+
+ void coroPump(coroutine_type::self& self)
+ {
+ BEGIN
+ {
+ LLCoroEventPump waiter;
+ replyName = waiter.getName();
+ result = waiter.wait(self);
+ }
+ END
+ }
+
+ void coroPumpPost(coroutine_type::self& self)
+ {
+ BEGIN
+ {
+ LLCoroEventPump waiter;
+ result = waiter.postAndWait(self, LLSD().insert("value", 17),
+ immediateAPI.getPump(), "reply");
+ }
+ END
+ }
+
+ void coroPumps(coroutine_type::self& self)
+ {
+ BEGIN
+ {
+ LLCoroEventPumps waiter;
+ replyName = waiter.getName0();
+ errorName = waiter.getName1();
+ LLEventWithID pair(waiter.wait(self));
+ result = pair.first;
+ which = pair.second;
+ }
+ END
+ }
+
+ void coroPumpsNoEx(coroutine_type::self& self)
+ {
+ BEGIN
+ {
+ LLCoroEventPumps waiter;
+ replyName = waiter.getName0();
+ errorName = waiter.getName1();
+ result = waiter.waitWithException(self);
+ }
+ END
+ }
+
+ void coroPumpsEx(coroutine_type::self& self)
+ {
+ BEGIN
+ {
+ LLCoroEventPumps waiter;
+ replyName = waiter.getName0();
+ errorName = waiter.getName1();
+ try
+ {
+ result = waiter.waitWithException(self);
+ debug("no exception");
+ }
+ catch (const LLErrorEvent& e)
+ {
+ debug(STRINGIZE("exception " << e.what()));
+ errordata = e.getData();
+ }
+ }
+ END
+ }
+
+ void coroPumpsNoLog(coroutine_type::self& self)
+ {
+ BEGIN
+ {
+ LLCoroEventPumps waiter;
+ replyName = waiter.getName0();
+ errorName = waiter.getName1();
+ result = waiter.waitWithLog(self);
+ }
+ END
+ }
+
+ void coroPumpsLog(coroutine_type::self& self)
+ {
+ BEGIN
+ {
+ LLCoroEventPumps waiter;
+ replyName = waiter.getName0();
+ errorName = waiter.getName1();
+ WrapLL_ERRS capture;
+ try
+ {
+ result = waiter.waitWithLog(self);
+ debug("no exception");
+ }
+ catch (const WrapLL_ERRS::FatalException& e)
+ {
+ debug(STRINGIZE("exception " << e.what()));
+ threw = e.what();
+ }
+ }
+ END
+ }
+
+ void coroPumpsPost(coroutine_type::self& self)
+ {
+ BEGIN
+ {
+ LLCoroEventPumps waiter;
+ LLEventWithID pair(waiter.postAndWait(self, LLSD().insert("value", 23),
+ immediateAPI.getPump(), "reply", "error"));
+ result = pair.first;
+ which = pair.second;
+ }
+ END
+ }
+
+ void coroPumpsPost_1(coroutine_type::self& self)
+ {
+ BEGIN
+ {
+ LLCoroEventPumps waiter;
+ LLEventWithID pair(
+ waiter.postAndWait(self, LLSD().insert("value", 23).insert("fail", LLSD()),
+ immediateAPI.getPump(), "reply", "error"));
+ result = pair.first;
+ which = pair.second;
+ }
+ END
+ }
+
+ void coroPumpsPostNoEx(coroutine_type::self& self)
+ {
+ BEGIN
+ {
+ LLCoroEventPumps waiter;
+ result = waiter.postAndWaitWithException(self, LLSD().insert("value", 8),
+ immediateAPI.getPump(), "reply", "error");
+ }
+ END
+ }
+
+ void coroPumpsPostEx(coroutine_type::self& self)
+ {
+ BEGIN
+ {
+ LLCoroEventPumps waiter;
+ try
+ {
+ result = waiter.postAndWaitWithException(self,
+ LLSD().insert("value", 9).insert("fail", LLSD()),
+ immediateAPI.getPump(), "reply", "error");
+ debug("no exception");
+ }
+ catch (const LLErrorEvent& e)
+ {
+ debug(STRINGIZE("exception " << e.what()));
+ errordata = e.getData();
+ }
+ }
+ END
+ }
+
+ void coroPumpsPostNoLog(coroutine_type::self& self)
+ {
+ BEGIN
+ {
+ LLCoroEventPumps waiter;
+ result = waiter.postAndWaitWithLog(self, LLSD().insert("value", 30),
+ immediateAPI.getPump(), "reply", "error");
+ }
+ END
+ }
+
+ void coroPumpsPostLog(coroutine_type::self& self)
+ {
+ BEGIN
+ {
+ LLCoroEventPumps waiter;
+ WrapLL_ERRS capture;
+ try
+ {
+ result = waiter.postAndWaitWithLog(self,
+ LLSD().insert("value", 31).insert("fail", LLSD()),
+ immediateAPI.getPump(), "reply", "error");
+ debug("no exception");
+ }
+ catch (const WrapLL_ERRS::FatalException& e)
+ {
+ debug(STRINGIZE("exception " << e.what()));
+ threw = e.what();
+ }
+ }
+ END
+ }
+
+ void ensure_done(coroutine_type& coro)
+ {
+ ensure("coroutine complete", ! coro);
+ }
+
+ ImmediateAPI immediateAPI;
+ std::string replyName, errorName, threw;
+ LLSD result, errordata;
+ int which;
+ };
+ typedef test_group<coroutine_data> coroutine_group;
+ typedef coroutine_group::object object;
+ coroutine_group coroutinegrp("coroutine");
+
+ template<> template<>
+ void object::test<1>()
+ {
+ set_test_name("From banana.cpp example program in Boost.Coroutine distro");
+ std::string buffer = "banananana";
+ std::string match = "nana";
+ std::string::iterator begin = buffer.begin();
+ std::string::iterator end = buffer.end();
+
+#if defined(BOOST_CORO_POSIX_IMPL)
+// std::cout << "Using Boost.Coroutine " << BOOST_CORO_POSIX_IMPL << '\n';
+#else
+// std::cout << "Using non-Posix Boost.Coroutine implementation" << std::endl;
+#endif
+
+ typedef std::string::iterator signature(std::string::iterator,
+ std::string::iterator,
+ std::string,
+ match_coroutine_type::self&);
+
+ coroutine<std::string::iterator(void)> matcher
+ (boost::bind(static_cast<signature*>(match_substring),
+ begin,
+ end,
+ match,
+ _1));
+
+ std::string::iterator i = matcher();
+/*==========================================================================*|
+ while(matcher && i != buffer.end()) {
+ std::cout <<"Match at: "<< std::distance(buffer.begin(), i)<<'\n';
+ i = matcher();
+ }
+|*==========================================================================*/
+ size_t matches[] = { 2, 4, 6 };
+ for (size_t *mi(boost::begin(matches)), *mend(boost::end(matches));
+ mi != mend; ++mi, i = matcher())
+ {
+ ensure("more", matcher);
+ ensure("found", i != buffer.end());
+ ensure_equals("value", std::distance(buffer.begin(), i), *mi);
+ }
+ ensure("done", ! matcher);
+ }
+
+ template<> template<>
+ void object::test<2>()
+ {
+ set_test_name("explicit_wait");
+ DEBUG;
+
+ // Construct the coroutine instance that will run explicit_wait.
+ // Pass the ctor a callable that accepts the coroutine_type::self
+ // param passed by the library.
+ coroutine_type coro(boost::bind(&coroutine_data::explicit_wait, this, _1));
+ // Start the coroutine
+ coro(std::nothrow);
+ // When the coroutine waits for the event pump, it returns here.
+ debug("about to send");
+ // Satisfy the wait.
+ LLEventPumps::instance().obtain("source").post("received");
+ // Now wait for the coroutine to complete.
+ ensure_done(coro);
+ // ensure the coroutine ran and woke up again with the intended result
+ ensure_equals(result.asString(), "received");
+ }
+
+ template<> template<>
+ void object::test<3>()
+ {
+ set_test_name("waitForEventOn1");
+ DEBUG;
+ coroutine_type coro(boost::bind(&coroutine_data::waitForEventOn1, this, _1));
+ coro(std::nothrow);
+ debug("about to send");
+ LLEventPumps::instance().obtain("source").post("received");
+ debug("back from send");
+ ensure_done(coro);
+ ensure_equals(result.asString(), "received");
+ }
+
+ template<> template<>
+ void object::test<4>()
+ {
+ set_test_name("waitForEventOn2 reply");
+ {
+ DEBUG;
+ coroutine_type coro(boost::bind(&coroutine_data::waitForEventOn2, this, _1));
+ coro(std::nothrow);
+ debug("about to send");
+ LLEventPumps::instance().obtain("reply").post("received");
+ debug("back from send");
+ ensure_done(coro);
+ }
+ ensure_equals(result.asString(), "received");
+ ensure_equals("which pump", which, 0);
+ }
+
+ template<> template<>
+ void object::test<5>()
+ {
+ set_test_name("waitForEventOn2 error");
+ DEBUG;
+ coroutine_type coro(boost::bind(&coroutine_data::waitForEventOn2, this, _1));
+ coro(std::nothrow);
+ debug("about to send");
+ LLEventPumps::instance().obtain("error").post("badness");
+ debug("back from send");
+ ensure_done(coro);
+ ensure_equals(result.asString(), "badness");
+ ensure_equals("which pump", which, 1);
+ }
+
+ template<> template<>
+ void object::test<6>()
+ {
+ set_test_name("coroPump");
+ DEBUG;
+ coroutine_type coro(boost::bind(&coroutine_data::coroPump, this, _1));
+ coro(std::nothrow);
+ debug("about to send");
+ LLEventPumps::instance().obtain(replyName).post("received");
+ debug("back from send");
+ ensure_done(coro);
+ ensure_equals(result.asString(), "received");
+ }
+
+ template<> template<>
+ void object::test<7>()
+ {
+ set_test_name("coroPumps reply");
+ DEBUG;
+ coroutine_type coro(boost::bind(&coroutine_data::coroPumps, this, _1));
+ coro(std::nothrow);
+ debug("about to send");
+ LLEventPumps::instance().obtain(replyName).post("received");
+ debug("back from send");
+ ensure_done(coro);
+ ensure_equals(result.asString(), "received");
+ ensure_equals("which pump", which, 0);
+ }
+
+ template<> template<>
+ void object::test<8>()
+ {
+ set_test_name("coroPumps error");
+ DEBUG;
+ coroutine_type coro(boost::bind(&coroutine_data::coroPumps, this, _1));
+ coro(std::nothrow);
+ debug("about to send");
+ LLEventPumps::instance().obtain(errorName).post("badness");
+ debug("back from send");
+ ensure_done(coro);
+ ensure_equals(result.asString(), "badness");
+ ensure_equals("which pump", which, 1);
+ }
+
+ template<> template<>
+ void object::test<9>()
+ {
+ set_test_name("coroPumpsNoEx");
+ DEBUG;
+ coroutine_type coro(boost::bind(&coroutine_data::coroPumpsNoEx, this, _1));
+ coro(std::nothrow);
+ debug("about to send");
+ LLEventPumps::instance().obtain(replyName).post("received");
+ debug("back from send");
+ ensure_done(coro);
+ ensure_equals(result.asString(), "received");
+ }
+
+ template<> template<>
+ void object::test<10>()
+ {
+ set_test_name("coroPumpsEx");
+ DEBUG;
+ coroutine_type coro(boost::bind(&coroutine_data::coroPumpsEx, this, _1));
+ coro(std::nothrow);
+ debug("about to send");
+ LLEventPumps::instance().obtain(errorName).post("badness");
+ debug("back from send");
+ ensure_done(coro);
+ ensure("no result", result.isUndefined());
+ ensure_equals("got error", errordata.asString(), "badness");
+ }
+
+ template<> template<>
+ void object::test<11>()
+ {
+ set_test_name("coroPumpsNoLog");
+ DEBUG;
+ coroutine_type coro(boost::bind(&coroutine_data::coroPumpsNoLog, this, _1));
+ coro(std::nothrow);
+ debug("about to send");
+ LLEventPumps::instance().obtain(replyName).post("received");
+ debug("back from send");
+ ensure_done(coro);
+ ensure_equals(result.asString(), "received");
+ }
+
+ template<> template<>
+ void object::test<12>()
+ {
+ set_test_name("coroPumpsLog");
+ DEBUG;
+ coroutine_type coro(boost::bind(&coroutine_data::coroPumpsLog, this, _1));
+ coro(std::nothrow);
+ debug("about to send");
+ LLEventPumps::instance().obtain(errorName).post("badness");
+ debug("back from send");
+ ensure_done(coro);
+ ensure("no result", result.isUndefined());
+ ensure_contains("got error", threw, "badness");
+ }
+
+ template<> template<>
+ void object::test<13>()
+ {
+ set_test_name("postAndWait1");
+ DEBUG;
+ coroutine_type coro(boost::bind(&coroutine_data::postAndWait1, this, _1));
+ coro(std::nothrow);
+ ensure_done(coro);
+ ensure_equals(result.asInteger(), 18);
+ }
+
+ template<> template<>
+ void object::test<14>()
+ {
+ set_test_name("postAndWait2");
+ DEBUG;
+ coroutine_type coro(boost::bind(&coroutine_data::postAndWait2, this, _1));
+ coro(std::nothrow);
+ ensure_done(coro);
+ ensure_equals(result.asInteger(), 19);
+ ensure_equals(which, 0);
+ }
+
+ template<> template<>
+ void object::test<15>()
+ {
+ set_test_name("postAndWait2_1");
+ DEBUG;
+ coroutine_type coro(boost::bind(&coroutine_data::postAndWait2_1, this, _1));
+ coro(std::nothrow);
+ ensure_done(coro);
+ ensure_equals(result.asInteger(), 19);
+ ensure_equals(which, 1);
+ }
+
+ template<> template<>
+ void object::test<16>()
+ {
+ set_test_name("coroPumpPost");
+ DEBUG;
+ coroutine_type coro(boost::bind(&coroutine_data::coroPumpPost, this, _1));
+ coro(std::nothrow);
+ ensure_done(coro);
+ ensure_equals(result.asInteger(), 18);
+ }
+
+ template<> template<>
+ void object::test<17>()
+ {
+ set_test_name("coroPumpsPost reply");
+ DEBUG;
+ coroutine_type coro(boost::bind(&coroutine_data::coroPumpsPost, this, _1));
+ coro(std::nothrow);
+ ensure_done(coro);
+ ensure_equals(result.asInteger(), 24);
+ ensure_equals("which pump", which, 0);
+ }
+
+ template<> template<>
+ void object::test<18>()
+ {
+ set_test_name("coroPumpsPost error");
+ DEBUG;
+ coroutine_type coro(boost::bind(&coroutine_data::coroPumpsPost_1, this, _1));
+ coro(std::nothrow);
+ ensure_done(coro);
+ ensure_equals(result.asInteger(), 24);
+ ensure_equals("which pump", which, 1);
+ }
+
+ template<> template<>
+ void object::test<19>()
+ {
+ set_test_name("coroPumpsPostNoEx");
+ DEBUG;
+ coroutine_type coro(boost::bind(&coroutine_data::coroPumpsPostNoEx, this, _1));
+ coro(std::nothrow);
+ ensure_done(coro);
+ ensure_equals(result.asInteger(), 9);
+ }
+
+ template<> template<>
+ void object::test<20>()
+ {
+ set_test_name("coroPumpsPostEx");
+ DEBUG;
+ coroutine_type coro(boost::bind(&coroutine_data::coroPumpsPostEx, this, _1));
+ coro(std::nothrow);
+ ensure_done(coro);
+ ensure("no result", result.isUndefined());
+ ensure_equals("got error", errordata.asInteger(), 10);
+ }
+
+ template<> template<>
+ void object::test<21>()
+ {
+ set_test_name("coroPumpsPostNoLog");
+ DEBUG;
+ coroutine_type coro(boost::bind(&coroutine_data::coroPumpsPostNoLog, this, _1));
+ coro(std::nothrow);
+ ensure_done(coro);
+ ensure_equals(result.asInteger(), 31);
+ }
+
+ template<> template<>
+ void object::test<22>()
+ {
+ set_test_name("coroPumpsPostLog");
+ DEBUG;
+ coroutine_type coro(boost::bind(&coroutine_data::coroPumpsPostLog, this, _1));
+ coro(std::nothrow);
+ ensure_done(coro);
+ ensure("no result", result.isUndefined());
+ ensure_contains("got error", threw, "32");
+ }
+} // namespace tut