Module: Libuv
- Extended by:
- Accessors
- Defined in:
- lib/libuv.rb,
lib/libuv/q.rb,
lib/libuv/dns.rb,
lib/libuv/tcp.rb,
lib/libuv/tty.rb,
lib/libuv/udp.rb,
lib/libuv/file.rb,
lib/libuv/idle.rb,
lib/libuv/pipe.rb,
lib/libuv/work.rb,
lib/libuv/async.rb,
lib/libuv/check.rb,
lib/libuv/error.rb,
lib/libuv/spawn.rb,
lib/libuv/timer.rb,
lib/libuv/handle.rb,
lib/libuv/signal.rb,
lib/libuv/ext/ext.rb,
lib/libuv/prepare.rb,
lib/libuv/reactor.rb,
lib/libuv/version.rb,
lib/libuv/fs_event.rb,
lib/libuv/ext/types.rb,
lib/libuv/coroutines.rb,
lib/libuv/fiber_pool.rb,
lib/libuv/filesystem.rb,
lib/libuv/mixins/net.rb,
lib/libuv/mixins/stream.rb,
lib/libuv/mixins/listener.rb,
lib/libuv/mixins/resource.rb,
lib/libuv/mixins/accessors.rb,
lib/libuv/mixins/fs_checks.rb,
lib/libuv/ext/platform/unix.rb,
lib/libuv/mixins/assertions.rb,
lib/libuv/ext/platform/windows.rb,
lib/libuv/ext/platform/darwin_x64.rb
Defined Under Namespace
Modules: Accessors, Assertions, Ext, FsChecks, Listener, Net, Q, Resource, Stream Classes: Async, Check, Dns, Error, FSEvent, FiberPool, File, Filesystem, Handle, Idle, Pipe, Prepare, Reactor, Signal, Spawn, TCP, TTY, Timer, UDP, Work
Constant Summary collapse
- DefaultThread =
Thread.current
- VERSION =
'4.0.2'
Constants included from Accessors
Class Method Summary collapse
-
.co(*yieldable) ⇒ Object
Takes a Promise response and turns it into a co-routine for code execution without using callbacks.
-
.cpu_count ⇒ Integer?
Returns the number of CPU cores on the host platform.
Methods included from Accessors
Class Method Details
.co(*yieldable) ⇒ Object
Takes a Promise response and turns it into a co-routine for code execution without using callbacks
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# File 'lib/libuv/coroutines.rb', line 16 def co(*yieldable) on_reactor = Libuv::Reactor.current raise 'must be running on a reactor thread to use coroutines' unless on_reactor f = Fiber.current wasError = false # Convert the input into a promise on the current reactor if yieldable.length == 1 promise = yieldable[0] # Passed independently as this is often overwritten for performance promise.progress &Proc.new if block_given? else promise = on_reactor.all(*yieldable) end # Use the promise to resume the Fiber promise.then(proc { |res| if Libuv::Reactor.current == on_reactor f.resume res else on_reactor.schedule { f.resume(res) } end }, proc { |err| wasError = true if Libuv::Reactor.current == on_reactor f.resume err else on_reactor.schedule { f.resume(err) } end }) # We want to prevent the reactor from stopping while we are waiting on a response on_reactor.ref result = Fiber.yield # Assign the result from the resume on_reactor.unref # Either return the result or raise an error if wasError if result.is_a?(Exception) backtrace = caller backtrace.shift if result.respond_to?(:backtrace) && result.backtrace backtrace << '---- continuation ----' backtrace.concat(result.backtrace) end result.set_backtrace(backtrace) raise result else e = case result when String, Symbol CoroutineRejection.new(result.to_s) else CoroutineRejection.new end e.value = result raise e end end result end |
.cpu_count ⇒ Integer?
Returns the number of CPU cores on the host platform
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# File 'lib/libuv.rb', line 53 def self.cpu_count cpu_info = FFI::MemoryPointer.new(:pointer) cpu_count = FFI::MemoryPointer.new(:int) if ::Libuv::Ext.cpu_info(cpu_info, cpu_count) >= 0 count = cpu_count.read_int ::Libuv::Ext.free_cpu_info(cpu_info.read_pointer, count) return count else return nil end end |