This sets down the groundwork for dynamic policy classes.

Groundwork is used for the default class which currently represents
texture fetching.  Class options implemented from API user into
HttpLibcurl.  Policy layer is going to start doing some traffic
shaping like work to solve problems with consumer-grade gear.
Need to have dynamic aspects to policies and that starts now...

1 files changed, 125 insertions, 0 deletions

diff --git a/indra/llcorehttp/_httppolicyclass.cpp b/indra/llcorehttp/_httppolicyclass.cpp
new file mode 100644
index 0000000000..8007468d3c
--- /dev/null
+++ b/indra/llcorehttp/_httppolicyclass.cpp
@@ -0,0 +1,125 @@
+/**
+ * @file _httppolicyclass.cpp
+ * @brief Definitions for internal class defining class policy option.
+ *
+ * $LicenseInfo:firstyear=2012&license=viewerlgpl$
+ * Second Life Viewer Source Code
+ * Copyright (C) 2012, Linden Research, Inc.
+ *
+ * This library is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU Lesser General Public
+ * License as published by the Free Software Foundation;
+ * version 2.1 of the License only.
+ *
+ * This library is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+ * Lesser General Public License for more details.
+ *
+ * You should have received a copy of the GNU Lesser General Public
+ * License along with this library; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301  USA
+ *
+ * Linden Research, Inc., 945 Battery Street, San Francisco, CA  94111  USA
+ * $/LicenseInfo$
+ */
+
+#include "_httppolicyclass.h"
+
+#include "_httpinternal.h"
+
+
+namespace LLCore
+{
+
+
+HttpPolicyClass::HttpPolicyClass()
+	: mSetMask(0UL),
+	  mConnectionLimit(DEFAULT_CONNECTIONS),
+	  mPerHostConnectionLimit(DEFAULT_CONNECTIONS),
+	  mPipelining(0)
+{}
+
+
+HttpPolicyClass::~HttpPolicyClass()
+{}
+
+
+HttpPolicyClass & HttpPolicyClass::operator=(const HttpPolicyClass & other)
+{
+	if (this != &other)
+	{
+		mSetMask = other.mSetMask;
+		mConnectionLimit = other.mConnectionLimit;
+		mPerHostConnectionLimit = other.mPerHostConnectionLimit;
+		mPipelining = other.mPipelining;
+	}
+	return *this;
+}
+
+
+HttpPolicyClass::HttpPolicyClass(const HttpPolicyClass & other)
+	: mSetMask(other.mSetMask),
+	  mConnectionLimit(other.mConnectionLimit),
+	  mPerHostConnectionLimit(other.mPerHostConnectionLimit),
+	  mPipelining(other.mPipelining)
+{}
+
+
+HttpStatus HttpPolicyClass::set(HttpRequest::EClassPolicy opt, long value)
+{
+	switch (opt)
+	{
+	case HttpRequest::CP_CONNECTION_LIMIT:
+		mConnectionLimit = llclamp(value, long(LIMIT_CONNECTIONS_MIN), long(LIMIT_CONNECTIONS_MAX));
+		break;
+
+	case HttpRequest::CP_PER_HOST_CONNECTION_LIMIT:
+		mPerHostConnectionLimit = llclamp(value, long(LIMIT_CONNECTIONS_MIN), mConnectionLimit);
+		break;
+
+	case HttpRequest::CP_ENABLE_PIPELINING:
+		mPipelining = llclamp(value, 0L, 1L);
+		break;
+
+	default:
+		return HttpStatus(HttpStatus::LLCORE, HE_INVALID_ARG);
+	}
+
+	mSetMask |= 1UL << int(opt);
+	return HttpStatus();
+}
+
+
+HttpStatus HttpPolicyClass::get(HttpRequest::EClassPolicy opt, long * value)
+{
+	static const HttpStatus not_set(HttpStatus::LLCORE, HE_OPT_NOT_SET);
+	long * src(NULL);
+	
+	switch (opt)
+	{
+	case HttpRequest::CP_CONNECTION_LIMIT:
+		src = &mConnectionLimit;
+		break;
+
+	case HttpRequest::CP_PER_HOST_CONNECTION_LIMIT:
+		src = &mPerHostConnectionLimit;
+		break;
+
+	case HttpRequest::CP_ENABLE_PIPELINING:
+		src = &mPipelining;
+		break;
+
+	default:
+		return HttpStatus(HttpStatus::LLCORE, HE_INVALID_ARG);
+	}
+
+	if (! (mSetMask & (1UL << int(opt))))
+		return not_set;
+
+	*value = *src;
+	return HttpStatus();
+}
+
+
+}  // end namespace LLCore