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(max_memory: nil, timeout: nil, isolate: nil, ensure_gc_after_idle: nil, snapshot: nil) ⇒ Context
Returns a new instance of Context.
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
|
# File 'lib/mini_racer.rb', line 133
def initialize(max_memory: nil, timeout: nil, isolate: nil, ensure_gc_after_idle: nil, snapshot: nil)
options ||= {}
check_init_options!(isolate: isolate, snapshot: snapshot, max_memory: max_memory, ensure_gc_after_idle: ensure_gc_after_idle, timeout: timeout)
@functions = {}
@timeout = nil
@max_memory = nil
@current_exception = nil
@timeout = timeout
@max_memory = max_memory
@isolate = isolate || false
@ensure_gc_after_idle = ensure_gc_after_idle
if @ensure_gc_after_idle
@last_eval = nil
@ensure_gc_thread = nil
@ensure_gc_mutex = Mutex.new
end
@disposed = false
@callback_mutex = Mutex.new
@callback_running = false
@thread_raise_called = false
@eval_thread = nil
init_unsafe(isolate, snapshot)
end
|
Instance Method Details
#attach(name, callback) ⇒ Object
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
263
264
265
266
267
268
269
270
271
272
273
274
275
276
277
278
279
280
281
282
283
|
# File 'lib/mini_racer.rb', line 242
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
|
#call(function_name, *arguments) ⇒ Object
217
218
219
220
221
222
223
224
225
226
227
228
229
|
# File 'lib/mini_racer.rb', line 217
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
ensure_gc_thread if @ensure_gc_after_idle
end
|
#dispose ⇒ Object
231
232
233
234
235
236
237
238
239
|
# File 'lib/mini_racer.rb', line 231
def dispose
return if @disposed
isolate_mutex.synchronize do
return if @disposed
dispose_unsafe
@disposed = true
@isolate = nil end
end
|
#eval(str, options = nil) ⇒ Object
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
|
# File 'lib/mini_racer.rb', line 200
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
ensure_gc_thread if @ensure_gc_after_idle
end
|
#isolate ⇒ Object
167
168
169
170
171
|
# File 'lib/mini_racer.rb', line 167
def isolate
return @isolate if @isolate != false
@isolate = create_isolate_value
end
|
#load(filename) ⇒ Object
173
174
175
176
|
# File 'lib/mini_racer.rb', line 173
def load(filename)
eval(File.read(filename))
end
|
#write_heap_snapshot(file_or_io) ⇒ Object
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
|
# File 'lib/mini_racer.rb', line 178
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
|