Tornado’s own interfaces (such as tornado.web) directly instead of using WSGI. In general, Tornado code is not thread-safe. The only method in Tornado that is safe to call from other threads is IOLoop.add_callback referencing any Tornado objects. run_in_executor is the recommended way to interact with blocking code. 7Tornado Documentation, Release 6.5.1 8 Chapter 3. Threads and WSGICHAPTER FOUR ASYNCIO INTEGRATION concurrent connections, Tornado uses a single-threaded event loop. This means that all appli- cation code should aim to be asynchronous and non-blocking because only one operation can be active at a time

Tornado’s own interfaces (such as tornado.web) directly instead of using WSGI. In general, Tornado code is not thread-safe. The only method in Tornado that is safe to call from other threads is IOLoop.add_callback referencing any Tornado objects. run_in_executor is the recommended way to interact with blocking code. asyncio Integration Tornado is integrated with the standard library asyncio [https://docs.python asyncio — Bridge between asyncio and Tornado Utilities tornado.autoreload — Automatically detect code changes in development tornado.concurrent — Work with Future objects tornado.log — Logging support

Macros . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 254 19.4 Code Generation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 262 19.5 Non-Standard . . . . . . . . . . . . . . . . . . 331 26 Multi-processing and Distributed Computing 332 26.1 Code Availability and Loading Packages . . . . . . . . . . . . . . . . . . . . . . . . 334 26.2 Starting . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 367 28 Calling C and Fortran Code 368 28.1 Creating C-Compatible Julia Function Pointers . . . . . . . . . . . . . . . . . . . . .

Macros . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 254 19.4 Code Generation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 262 19.5 Non-Standard . . . . . . . . . . . . . . . . . . 331 26 Multi-processing and Distributed Computing 333 26.1 Code Availability and Loading Packages . . . . . . . . . . . . . . . . . . . . . . . . 335 26.2 Starting . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 368 28 Calling C and Fortran Code 369 28.1 Creating C-Compatible Julia Function Pointers . . . . . . . . . . . . . . . . . . . . .

Macros . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 254 19.4 Code Generation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 262 19.5 Non-Standard . . . . . . . . . . . . . . . . . . 331 26 Multi-processing and Distributed Computing 332 26.1 Code Availability and Loading Packages . . . . . . . . . . . . . . . . . . . . . . . . 334 26.2 Starting . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 367 28 Calling C and Fortran Code 368 28.1 Creating C-Compatible Julia Function Pointers . . . . . . . . . . . . . . . . . . . . .

Macros . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 254 19.4 Code Generation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 262 19.5 Non-Standard . . . . . . . . . . . . . . . . . . 331 26 Multi-processing and Distributed Computing 332 26.1 Code Availability and Loading Packages . . . . . . . . . . . . . . . . . . . . . . . . 334 26.2 Starting . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 367 28 Calling C and Fortran Code 368 28.1 Creating C-Compatible Julia Function Pointers . . . . . . . . . . . . . . . . . . . . .

Macros . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 251 19.4 Code Generation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 259 19.5 Non-Standard . . . . . . . . . . . . . . . . . . 327 26 Multi-processing and Distributed Computing 329 26.1 Code Availability and Loading Packages . . . . . . . . . . . . . . . . . . . . . . . . 331 26.2 Starting . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 363 28 Calling C and Fortran Code 365 28.1 Creating C-Compatible Julia Function Pointers . . . . . . . . . . . . . . . . . . . . .

Macros . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 251 19.4 Code Generation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 259 19.5 Non-Standard . . . . . . . . . . . . . . . . . . 327 26 Multi-processing and Distributed Computing 329 26.1 Code Availability and Loading Packages . . . . . . . . . . . . . . . . . . . . . . . . 331 26.2 Starting . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 363 28 Calling C and Fortran Code 365 28.1 Creating C-Compatible Julia Function Pointers . . . . . . . . . . . . . . . . . . . . .

Macros . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 251 19.4 Code Generation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 259 19.5 Non-Standard . . . . . . . . . . . . . . . . . . 327 26 Multi-processing and Distributed Computing 329 26.1 Code Availability and Loading Packages . . . . . . . . . . . . . . . . . . . . . . . . 331 26.2 Starting . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 363 28 Calling C and Fortran Code 365 28.1 Creating C-Compatible Julia Function Pointers . . . . . . . . . . . . . . . . . . . . .

Macros . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 254 19.4 Code Generation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 262 19.5 Non-Standard . . . . . . . . . . . . . . . . . . 331 26 Multi-processing and Distributed Computing 332 26.1 Code Availability and Loading Packages . . . . . . . . . . . . . . . . . . . . . . . . 334 26.2 Starting . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 367 28 Calling C and Fortran Code 368 28.1 Creating C-Compatible Julia Function Pointers . . . . . . . . . . . . . . . . . . . . .