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-rw-r--r--indra/llcommon/llleap.cpp220
1 files changed, 108 insertions, 112 deletions
diff --git a/indra/llcommon/llleap.cpp b/indra/llcommon/llleap.cpp
index d0fb586459..e93ba83434 100644
--- a/indra/llcommon/llleap.cpp
+++ b/indra/llcommon/llleap.cpp
@@ -18,9 +18,6 @@
#include <algorithm>
// std headers
// external library headers
-#include <boost/bind.hpp>
-#include <boost/scoped_ptr.hpp>
-#include <boost/tokenizer.hpp>
// other Linden headers
#include "llerror.h"
#include "llstring.h"
@@ -64,7 +61,9 @@ public:
// Pass it a callback to our connect() method, so it can send events
// from a particular LLEventPump to the plugin without having to know
// this class or method name.
- mListener(new LLLeapListener(boost::bind(&LLLeapImpl::connect, this, _1, _2)))
+ mListener(new LLLeapListener(
+ [this](LLEventPump& pump, const std::string& listener)
+ { return connect(pump, listener); }))
{
// Rule out unpopulated Params block
if (! cparams.executable.isProvided())
@@ -93,7 +92,7 @@ public:
}
// Listen for child "termination" right away to catch launch errors.
- mDonePump.listen("LLLeap", boost::bind(&LLLeapImpl::bad_launch, this, _1));
+ mDonePump.listen("LLLeap", [this](const LLSD& data){ return bad_launch(data); });
// Okay, launch child.
// Get a modifiable copy of params block to set files and postend.
@@ -113,7 +112,7 @@ public:
// Okay, launch apparently worked. Change our mDonePump listener.
mDonePump.stopListening("LLLeap");
- mDonePump.listen("LLLeap", boost::bind(&LLLeapImpl::done, this, _1));
+ mDonePump.listen("LLLeap", [this](const LLSD& data){ return done(data); });
// Child might pump large volumes of data through either stdout or
// stderr. Don't bother copying all that data into notification event.
@@ -128,13 +127,9 @@ public:
// Listening on stdout is stateful. In general, we're either waiting
// for the length prefix or waiting for the specified length of data.
- // We address that with two different listener methods -- one of which
- // is blocked at any given time.
+ mReadPrefix = true;
mStdoutConnection = childout.getPump()
- .listen("prefix", boost::bind(&LLLeapImpl::rstdout, this, _1));
- mStdoutDataConnection = childout.getPump()
- .listen("data", boost::bind(&LLLeapImpl::rstdoutData, this, _1));
- mBlocker.reset(new LLEventPump::Blocker(mStdoutDataConnection));
+ .listen("LLLeap", [this](const LLSD& data){ return rstdout(data); });
// Log anything sent up through stderr. When a typical program
// encounters an error, it writes its error message to stderr and
@@ -142,7 +137,7 @@ public:
// interpreter behaves that way. More generally, though, a plugin
// author can log whatever s/he wants to the viewer log using stderr.
mStderrConnection = childerr.getPump()
- .listen("LLLeap", boost::bind(&LLLeapImpl::rstderr, this, _1));
+ .listen("LLLeap", [this](const LLSD& data){ return rstderr(data); });
// For our lifespan, intercept any LL_ERRS so we can notify plugin
mRecorder = LLError::addGenericRecorder(
@@ -255,120 +250,120 @@ public:
return false;
}
- // Initial state of stateful listening on child stdout: wait for a length
- // prefix, followed by ':'.
- bool rstdout(const LLSD& data)
+ // Stateful listening on child stdout:
+ // wait for a length prefix, followed by ':'.
+ bool rstdout(const LLSD&)
{
LLProcess::ReadPipe& childout(mChild->getReadPipe(LLProcess::STDOUT));
- // It's possible we got notified of a couple digit characters without
- // seeing the ':' -- unlikely, but still. Until we see ':', keep
- // waiting.
- if (childout.contains(':'))
+ while (childout.size())
{
- std::istream& childstream(childout.get_istream());
- // Saw ':', read length prefix and store in mExpect.
- size_t expect;
- childstream >> expect;
- int colon(childstream.get());
- if (colon != ':')
+ /*----------------- waiting for length prefix ------------------*/
+ if (mReadPrefix)
{
- // Protocol failure. Clear out the rest of the pending data in
- // childout (well, up to a max length) to log what was wrong.
- LLProcess::ReadPipe::size_type
- readlen((std::min)(childout.size(), LLProcess::ReadPipe::size_type(80)));
- bad_protocol(STRINGIZE(expect << char(colon) << childout.read(readlen)));
+ // It's possible we got notified of a couple digit characters without
+ // seeing the ':' -- unlikely, but still. Until we see ':', keep
+ // waiting.
+ if (! childout.contains(':'))
+ {
+ if (childout.contains('\n'))
+ {
+ // Since this is the initial listening state, this is where we'd
+ // arrive if the child isn't following protocol at all -- say
+ // because the user specified 'ls' or some darn thing.
+ bad_protocol(childout.getline());
+ }
+ // Either way, stop looping.
+ break;
+ }
+
+ // Saw ':', read length prefix and store in mExpect.
+ std::istream& childstream(childout.get_istream());
+ size_t expect;
+ childstream >> expect;
+ int colon(childstream.get());
+ if (colon != ':')
+ {
+ // Protocol failure. Clear out the rest of the pending data in
+ // childout (well, up to a max length) to log what was wrong.
+ LLProcess::ReadPipe::size_type
+ readlen((std::min)(childout.size(),
+ LLProcess::ReadPipe::size_type(80)));
+ bad_protocol(stringize(expect, char(colon), childout.read(readlen)));
+ break;
+ }
+ else
+ {
+ // Saw length prefix, saw colon, life is good. Now wait for
+ // that length of data to arrive.
+ mExpect = expect;
+ LL_DEBUGS("LLLeap") << "got length, waiting for "
+ << mExpect << " bytes of data" << LL_ENDL;
+ // Transition to "read data" mode and loop back to check
+ // if we've already received all the advertised data.
+ mReadPrefix = false;
+ continue;
+ }
}
+ /*----------------- saw prefix, wait for data ------------------*/
else
{
- // Saw length prefix, saw colon, life is good. Now wait for
- // that length of data to arrive.
- mExpect = expect;
- LL_DEBUGS("LLLeap") << "got length, waiting for "
- << mExpect << " bytes of data" << LL_ENDL;
- // Block calls to this method; resetting mBlocker unblocks
- // calls to the other method.
- mBlocker.reset(new LLEventPump::Blocker(mStdoutConnection));
- // Go check if we've already received all the advertised data.
- if (childout.size())
+ // Until we've accumulated the promised length of data, keep waiting.
+ if (childout.size() < mExpect)
{
- LLSD updata(data);
- updata["len"] = LLSD::Integer(childout.size());
- rstdoutData(updata);
+ break;
}
- }
- }
- else if (childout.contains('\n'))
- {
- // Since this is the initial listening state, this is where we'd
- // arrive if the child isn't following protocol at all -- say
- // because the user specified 'ls' or some darn thing.
- bad_protocol(childout.getline());
- }
- return false;
- }
- // State in which we listen on stdout for the specified length of data to
- // arrive.
- bool rstdoutData(const LLSD& data)
- {
- LLProcess::ReadPipe& childout(mChild->getReadPipe(LLProcess::STDOUT));
- // Until we've accumulated the promised length of data, keep waiting.
- if (childout.size() >= mExpect)
- {
- // Ready to rock and roll.
- LL_DEBUGS("LLLeap") << "needed " << mExpect << " bytes, got "
- << childout.size() << ", parsing LLSD" << LL_ENDL;
- LLSD data;
+ // We have the data we were told to expect! Ready to rock and roll.
+ LL_DEBUGS("LLLeap") << "needed " << mExpect << " bytes, got "
+ << childout.size() << ", parsing LLSD" << LL_ENDL;
+ LLSD data;
#if 1
- // specifically require notation LLSD from child
- LLPointer<LLSDParser> parser(new LLSDNotationParser());
- S32 parse_status(parser->parse(childout.get_istream(), data, mExpect));
- if (parse_status == LLSDParser::PARSE_FAILURE)
+ // specifically require notation LLSD from child
+ LLPointer<LLSDParser> parser(new LLSDNotationParser());
+ S32 parse_status(parser->parse(childout.get_istream(), data, mExpect));
+ if (parse_status == LLSDParser::PARSE_FAILURE)
#else
- // SL-18330: accept any valid LLSD serialization format from child
- // Unfortunately this runs into trouble we have not yet debugged.
- bool parse_status(LLSDSerialize::deserialize(data, childout.get_istream(), mExpect));
- if (! parse_status)
+ // SL-18330: accept any valid LLSD serialization format from child
+ // Unfortunately this runs into trouble we have not yet debugged.
+ bool parse_status(LLSDSerialize::deserialize(data, childout.get_istream(), mExpect));
+ if (! parse_status)
#endif
- {
- bad_protocol("unparseable LLSD data");
- }
- else if (! (data.isMap() && data["pump"].isString() && data.has("data")))
- {
- // we got an LLSD object, but it lacks required keys
- bad_protocol("missing 'pump' or 'data'");
- }
- else
- {
- try
{
- // The LLSD object we got from our stream contains the
- // keys we need.
- LLEventPumps::instance().obtain(data["pump"]).post(data["data"]);
+ bad_protocol("unparseable LLSD data");
+ break;
}
- catch (const std::exception& err)
+ else if (! (data.isMap() && data["pump"].isString() && data.has("data")))
{
- // No plugin should be allowed to crash the viewer by
- // driving an exception -- intentionally or not.
- LOG_UNHANDLED_EXCEPTION(stringize("handling request ", data));
- // Whether or not the plugin added a "reply" key to the
- // request, send a reply. We happen to know who originated
- // this request, and the reply LLEventPump of interest.
- // Not our problem if the plugin ignores the reply event.
- data["reply"] = mReplyPump.getName();
- sendReply(llsd::map("error",
- stringize(LLError::Log::classname(err), ": ", err.what())),
- data);
+ // we got an LLSD object, but it lacks required keys
+ bad_protocol("missing 'pump' or 'data'");
+ break;
}
- // Block calls to this method; resetting mBlocker unblocks
- // calls to the other method.
- mBlocker.reset(new LLEventPump::Blocker(mStdoutDataConnection));
- // Go check for any more pending events in the buffer.
- if (childout.size())
+ else
{
- LLSD updata(data);
- data["len"] = LLSD::Integer(childout.size());
- rstdout(updata);
+ try
+ {
+ // The LLSD object we got from our stream contains the
+ // keys we need.
+ LLEventPumps::instance().obtain(data["pump"]).post(data["data"]);
+ }
+ catch (const std::exception& err)
+ {
+ // No plugin should be allowed to crash the viewer by
+ // driving an exception -- intentionally or not.
+ LOG_UNHANDLED_EXCEPTION(stringize("handling request ", data));
+ // Whether or not the plugin added a "reply" key to the
+ // request, send a reply. We happen to know who originated
+ // this request, and the reply LLEventPump of interest.
+ // Not our problem if the plugin ignores the reply event.
+ data["reply"] = mReplyPump.getName();
+ sendReply(llsd::map("error",
+ stringize(LLError::Log::classname(err), ": ", err.what())),
+ data);
+ }
+ // Transition to "read prefix" mode and go check for any
+ // more pending events in the buffer.
+ mReadPrefix = true;
+ continue;
}
}
}
@@ -453,7 +448,8 @@ private:
// child's stdin, suitably enriched with the pump name on which it was
// received.
return pump.listen(listener,
- boost::bind(&LLLeapImpl::wstdin, this, pump.getName(), _1));
+ [this, name=pump.getName()](const LLSD& data)
+ { return wstdin(name, data); });
}
std::string mDesc;
@@ -461,11 +457,11 @@ private:
LLEventStream mReplyPump;
LLProcessPtr mChild;
LLTempBoundListener
- mStdinConnection, mStdoutConnection, mStdoutDataConnection, mStderrConnection;
- std::unique_ptr<LLEventPump::Blocker> mBlocker;
+ mStdinConnection, mStdoutConnection, mStderrConnection;
LLProcess::ReadPipe::size_type mExpect;
LLError::RecorderPtr mRecorder;
std::unique_ptr<LLLeapListener> mListener;
+ bool mReadPrefix;
};
// These must follow the declaration of LLLeapImpl, so they may as well be last.
generated by cgit v1.2.3 (git 2.25.1) at 2024-11-10 04:40:44 +0000