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resolves #63: remove locks

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Add an example to the User Manual for using flock instead
This commit is contained in:
Oliver Giles
2018-09-28 12:42:46 +03:00
parent a7aac62897
commit 18012a8d7a
4 changed files with 39 additions and 77 deletions
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26
src/server.cpp
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@@ -141,31 +141,6 @@ public:
return kj::READY_NOW;
}
// Take a named lock
kj::Promise<void> lock(LockContext context) override {
std::string lockName = context.getParams().getLockName();
LLOG(INFO, "RPC lock", lockName);
auto& lockList = locks[lockName];
lockList.emplace_back(kj::newPromiseAndFulfiller<void>());
if(lockList.size() == 1)
lockList.front().fulfiller->fulfill();
return std::move(lockList.back().promise);
}
// Release a named lock
kj::Promise<void> release(ReleaseContext context) override {
std::string lockName = context.getParams().getLockName();
LLOG(INFO, "RPC release", lockName);
auto& lockList = locks[lockName];
if(lockList.size() == 0) {
LLOG(INFO, "Attempt to release unheld lock", lockName);
return kj::READY_NOW;
}
lockList.erase(lockList.begin());
if(lockList.size() > 0)
lockList.front().fulfiller->fulfill();
return kj::READY_NOW;
}
private:
// Implements LaminarWaiter::complete
void complete(const Run* r) override {
@@ -175,7 +150,6 @@ private:
}
private:
LaminarInterface& laminar;
std::unordered_map<std::string, std::list<kj::PromiseFulfillerPair<void>>> locks;
std::unordered_map<const Run*, std::list<kj::PromiseFulfillerPair<RunState>>> runWaiters;
};