The Julia Language V1.12.5 The Julia Project March 14,2026 Contents Contents Contents i 1 Manual 1 1 Julia 1.12 Documentation 2 1.1 Introduction 2 1.2 Julia Compared to Other Languages 2 1.3 Important 308 24.3 More task operations 312 24.4 Tasks and events 313 25 Multi-Threading 314 25.1 Starting Julia with multiple threads 314 25.2 Threadpools 316 25.3 The @threads Macro 317 25.4 Communication and Calling C and Fortran Code 360 28.1 Creating C-Compatible Julia Function Pointers 362 28.2 Mapping C Types to Julia 364 28.3 Mapping C Functions to Julia 370 28.4 C Wrapper Examples 373 28.5 Fortran Wrapper

The Julia Language V1.11.9 The Julia Project March 14,2026 Contents Contents i 1 Manual 1 1.1 Julia 1.11 Documentation 2 1.1 Important Links 2 1.2 Introduction 2 1.3 Julia Compared to Other Languages 305 24.3 More task operations 309 24.4 Tasks and events 309 25 Multi-Threading 311 25.1 Starting Julia with multiple threads 311 25.2 Threadpools 312 25.3 The @threads Macro 314 25.4 Communication and Calling C and Fortran Code 357 28.1 Creating C-Compatible Julia Function Pointers 359 28.2 Mapping C Types to Julia 361 28.3 Mapping C Functions to Julia 367 28.4 C Wrapper Examples 370 28.5 Fortran Wrapper

The Julia Language V1.12.6 The Julia Project April 11,2026 Contents Contents Contents i 1 Manual 1 1 Julia 1.12 Documentation 2 1.1 Introduction 2 1.2 Julia Compared to Other Languages 2 1.3 Important 308 24.3 More task operations 312 24.4 Tasks and events 313 25 Multi-Threading 314 25.1 Starting Julia with multiple threads 314 25.2 Threadpools 316 25.3 The @threads Macro 317 25.4 Communication and Calling C and Fortran Code 360 28.1 Creating C-Compatible Julia Function Pointers 362 28.2 Mapping C Types to Julia 364 28.3 Mapping C Functions to Julia 370 28.4 C Wrapper Examples 373 28.5 Fortran Wrapper

The Julia Language V1.10.11 The Julia Project March 14,2026 Contents Contents Contents i 1 Manual 1 1 Julia 1.10 Documentation 2 1.1 Important Links 2 1.2 Introduction 2 1.3 Julia Compared to Other Languages 296 23.3 More task operations 300 23.4 Tasks and events 300 24 Multi-Threading 302 24.1 Starting Julia with multiple threads 302 24.2 Threadpools 303 24.3 Communication and synchronization 304 24.4 The and profiling 378 30 Embedding Julia 380 30.1 High-Level Embedding 380 30.2 High-Level Embedding on Windows with Visual Studio 382 30.3 Converting Types 383 30.4 Calling Julia Functions 384 30.5 Memory Management

The Julia Language V1.12.3 The Julia Project December 16,2025 Contents Contents Contents i 1 Manual 1 1 Julia 1.12 Documentation 2 1.1 Introduction 2 1.2 Julia Compared to Other Languages 2 1.3 Important More task operations 319 24.4 Tasks and events 320 CONTENTS 25 Multi-Threading 321 25.1 Starting Julia with multiple threads 321 25.2 Threadpools 323 25.3 The @threads Macro 324 25.4 Communication and Calling C and Fortran Code 369 28.1 Creating C-Compatible Julia Function Pointers 371 28.2 Mapping C Types to Julia 373 28.3 Mapping C Functions to Julia 380 28.4 C Wrapper Examples 382 28.5 Fortran Wrapper

The Julia Language V1.12.4 The Julia Project January 8,2026 Contents Contents Contents i 1 Manual 1 1 Julia 1.12 Documentation 2 1.1 Introduction 2 1.2 Julia Compared to Other Languages 2 1.3 Important More task operations 319 24.4 Tasks and events 320 CONTENTS 25 Multi-Threading 321 25.1 Starting Julia with multiple threads 321 25.2 Threadpools 323 25.3 The @threads Macro 324 25.4 Communication and Calling C and Fortran Code 369 28.1 Creating C-Compatible Julia Function Pointers 371 28.2 Mapping C Types to Julia 373 28.3 Mapping C Functions to Julia 380 28.4 C Wrapper Examples 382 28.5 Fortran Wrapper

The Julia Language The Julia Project March 14,2026 Contents Contents ii I Manual 1 1 Julia 1.8-beta1 Documentation 2 2 Getting Started 4 2.1 Resources 5 3 Variables 6 3.1 Allowed Variable Names 7 3.2 262 23.3 More task operations 265 23.4 Tasks and events 266 24 Multi-Threading 267 24.1 Starting Julia with multiple threads 267 24.2 Data-race freedom 268 24.3 The @threads Macro 269 CONTENTS 24.4 Atomic Calling C and Fortran Code 306 27.1 Creating C-Compatible Julia Function Pointers 308 27.2 Mapping C Types to Julia 310 27.3 Mapping C Functions to Julia 317 27.4 C Wrapper Examples 319 27.5 Fortran Wrapper

The Julia Language V1.10.0-alpha1 The Julia Project March 14,2026 Contents Contents Contents 1 Manual 1 1 Julia 1.10-alpha1 Documentation 2 1.1 Important Links 2 1.2 Introduction 3 1.3 Julia Compared 292 23.3 More task operations 296 23.4 Tasks and events 296 24 Multi-Threading 298 24.1 Starting Julia with multiple threads 298 24.2 Threadpools 299 24.3 Communication and synchronization 300 24.4 The and profiling 371 30 Embedding Julia 374 30.1 High-Level Embedding 374 30.2 High-Level Embedding on Windows with Visual Studio 376 30.3 Converting Types 377 30.4 Calling Julia Functions 378 30.5 Memory Management

The Julia Language The Julia Project March 14,2026 Contents Contents ii I Manual 1 1 Julia 1.7-beta2 Documentation 2 2 Getting Started 4 2.1 Resources 5 3 Variables 6 3.1 Allowed Variable Names 7 3.2 256 23.3 More task operations 259 23.4 Tasks and events 260 24 Multi-Threading 261 24.1 Starting Julia with multiple threads 261 24.2 Data-race freedom 262 24.3 The @threads Macro 263 24.4 Atomic Operations Calling C and Fortran Code 300 27.1 Creating C-Compatible Julia Function Pointers 302 27.2 Mapping C Types to Julia 304 27.3 Mapping C Functions to Julia 311 27.4 C Wrapper Examples 313 27.5 Fortran Wrapper

The Julia Language The Julia Project March 14,2026 Contents Contents ii I Manual 1 1 Julia 1.7-rc1 Documentation 2 2 Getting Started 4 2.1 Resources 5 3 Variables 6 3.1 Allowed Variable Names 7 3.2 Stylistic Calling C and Fortran Code 300 27.1 Creating C-Compatible Julia Function Pointers 302 27.2 Mapping C Types to Julia 304 27.3 Mapping C Functions to Julia 311 27.4 C Wrapper Examples 313 27.5 Fortran Wrapper and profiling 325 30 Embedding Julia 327 30.1 High-Level Embedding 327 30.2 High-Level Embedding on Windows with Visual Studio 329 30.3 Converting Types 330 30.4 Calling Julia Functions 330 CONTENTS 5 Memory