Class: MiniRacer::Context
- Inherits:
-
Object
- Object
- MiniRacer::Context
show all
- Defined in:
- lib/mini_racer.rb
Overview
eval is defined in the C class
Defined Under Namespace
Classes: ExternalFunction
Instance Method Summary
collapse
Constructor Details
#initialize(options = nil) ⇒ Context
Returns a new instance of Context.
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# File 'lib/mini_racer.rb', line 133
def initialize(options = nil)
options ||= {}
check_init_options!(options)
@functions = {}
@timeout = nil
@max_memory = nil
@current_exception = nil
@timeout = options[:timeout]
if options[:max_memory].is_a?(Numeric) && options[:max_memory] > 0
@max_memory = options[:max_memory]
end
@isolate = options[:isolate] || false
@disposed = false
@callback_mutex = Mutex.new
@callback_running = false
@thread_raise_called = false
@eval_thread = nil
init_unsafe(options[:isolate], options[:snapshot])
end
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Instance Method Details
#attach(name, callback) ⇒ Object
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# File 'lib/mini_racer.rb', line 231
def attach(name, callback)
raise(ContextDisposedError, 'attempted to call function on a disposed context!') if @disposed
wrapped = lambda do |*args|
begin
r = nil
begin
@callback_mutex.synchronize{
@callback_running = true
}
r = callback.call(*args)
ensure
@callback_mutex.synchronize{
@callback_running = false
}
end
@callback_mutex.synchronize {
if @thread_raise_called
sleep 2
end
}
r
ensure
@callback_mutex.synchronize {
@thread_raise_called = false
}
end
end
isolate_mutex.synchronize do
external = ExternalFunction.new(name, wrapped, self)
@functions["#{name}"] = external
end
end
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#call(function_name, *arguments) ⇒ Object
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# File 'lib/mini_racer.rb', line 208
def call(function_name, *arguments)
raise(ContextDisposedError, 'attempted to call function on a disposed context!') if @disposed
@eval_thread = Thread.current
isolate_mutex.synchronize do
timeout do
call_unsafe(function_name, *arguments)
end
end
ensure
@eval_thread = nil
end
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#dispose ⇒ Object
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# File 'lib/mini_racer.rb', line 221
def dispose
return if @disposed
isolate_mutex.synchronize do
dispose_unsafe
end
@disposed = true
@isolate = nil end
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#eval(str, options = nil) ⇒ Object
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# File 'lib/mini_racer.rb', line 192
def eval(str, options=nil)
raise(ContextDisposedError, 'attempted to call eval on a disposed context!') if @disposed
filename = options && options[:filename].to_s
@eval_thread = Thread.current
isolate_mutex.synchronize do
@current_exception = nil
timeout do
eval_unsafe(str, filename)
end
end
ensure
@eval_thread = nil
end
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#isolate ⇒ Object
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# File 'lib/mini_racer.rb', line 159
def isolate
return @isolate if @isolate != false
@isolate = create_isolate_value
end
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#load(filename) ⇒ Object
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# File 'lib/mini_racer.rb', line 165
def load(filename)
eval(File.read(filename))
end
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#write_heap_snapshot(file_or_io) ⇒ Object
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# File 'lib/mini_racer.rb', line 170
def write_heap_snapshot(file_or_io)
f = nil
implicit = false
if String === file_or_io
f = File.open(file_or_io, "w")
implicit = true
else
f = file_or_io
end
if !(File === f)
raise ArgumentError("file_or_io")
end
write_heap_snapshot_unsafe(f)
ensure
f.close if implicit
end
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