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Always use co-routines:

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This permits RPC handlers to suspend and reschedule:
This commit is contained in:
JoelKatz
2015-06-17 12:39:28 -07:00
committed by Vinnie Falco
parent 48d6a4ab6a
commit 3d6e76046c
3 changed files with 6 additions and 26 deletions
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5
src/ripple/rpc/Yield.h
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@@ -78,15 +78,10 @@ private:
struct YieldStrategy struct YieldStrategy
{ {
enum class Streaming {no, yes}; enum class Streaming {no, yes};
enum class UseCoroutines {no, yes};
/** Is the data streamed, or generated monolithically? */ /** Is the data streamed, or generated monolithically? */
Streaming streaming = Streaming::no; Streaming streaming = Streaming::no;
/** Are results generated in a coroutine? If this is no, then the code can
never yield. */
UseCoroutines useCoroutines = UseCoroutines::no;
/** How many bytes do we emit before yielding? 0 means "never yield due to /** How many bytes do we emit before yielding? 0 means "never yield due to
number of bytes sent". */ number of bytes sent". */
std::size_t byteYieldCount = 0; std::size_t byteYieldCount = 0;

3
src/ripple/rpc/impl/Yield.cpp
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@@ -70,9 +70,6 @@ YieldStrategy makeYieldStrategy (Section const& s)
ys.streaming = get<bool> (s, "streaming") ? ys.streaming = get<bool> (s, "streaming") ?
YieldStrategy::Streaming::yes : YieldStrategy::Streaming::yes :
YieldStrategy::Streaming::no; YieldStrategy::Streaming::no;
ys.useCoroutines = get<bool> (s, "use_coroutines") ?
YieldStrategy::UseCoroutines::yes :
YieldStrategy::UseCoroutines::no;
ys.byteYieldCount = get<std::size_t> (s, "byte_yield_count"); ys.byteYieldCount = get<std::size_t> (s, "byte_yield_count");
ys.accountYieldCount = get<std::size_t> (s, "account_yield_count"); ys.accountYieldCount = get<std::size_t> (s, "account_yield_count");
ys.transactionYieldCount = get<std::size_t> (s, "transaction_yield_count"); ys.transactionYieldCount = get<std::size_t> (s, "transaction_yield_count");

24
src/ripple/server/impl/ServerHandlerImp.cpp
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@@ -181,24 +181,12 @@ ServerHandlerImp::onRequest (HTTP::Session& session)
auto detach = session.detach(); auto detach = session.detach();
if (setup_.yieldStrategy.useCoroutines == RPC::SuspendCallback suspend (
RPC::YieldStrategy::UseCoroutines::yes) [this, detach] (RPC::Suspend const& suspend) {
{ processSession (detach, suspend);
RPC::SuspendCallback suspend ( });
[this, detach] (RPC::Suspend const& suspend) { RPC::Coroutine coroutine (suspend);
processSession (detach, suspend); coroutine.run();
});
RPC::Coroutine coroutine (suspend);
coroutine.run();
}
else
{
m_jobQueue.addJob (
jtCLIENT, "RPC-Client",
[=] (Job&) {
processSession (detach, RPC::Suspend());
});
}
} }
void void