29 Parallel Computing ..... 267 30 Coroutines ..... 269 30.1 Channels ..... 269 31 Multi-Threading (Experimental) 273 31.1 Setup 273 31.2 The @threads Macro 273 31.3 Atomic Operations 274 and permutation 688 55.7 Array functions 701 55.8 Combinatorics 710 56 Tasks 715 57 Multi-Threading 723 57.1 ccall using a threadpool (Experimental) 728 57.2 Synchronization Primitives 728 58 inbounds 1169 The bounds checking call hierarchy 1169 101.17 Proper maintenance and care of multi-threading locks 1170 Locks 1170 Broken Locks 1171 Shared Global Data Structures 1172 101.18 Arrays

Communicating with Channels 251 23.3 More task operations 254 23.4 Tasks and events 255 24 Multi-Threading 256 24.1 Starting Julia with multiple threads 256 24.2 Data-race freedom 257 24.3 The @threads 48 Tasks 755 48.1 Scheduling 759 48.2 Synchronization 760 48.3 Channels 763 49 Multi-Threading 768 49.1 Synchronization 769 49.2 Atomic operations 770 49.3 ccall using a threadpool (Experimental) runtime ..... 1265 98.16 Bounds checking ..... 1266 98.17 Proper maintenance and care of multi-threading locks ..... 1268 98.18 Arrays with custom indices ..... 1271 98.19 Module loading ..... 1274

allowsGroupOpacity • shouldRasterize for layer which not redrawn ## Database ## Data Needs • Threading • I/O Performance • Query Performance • Migration • Model Relationship ## CoreData or Realm CoreData • Build in Support • Package Size • GUI Support ## Realm • Great Threading Support • Faster • But Fat ## Threading CoreData Notification Realm Sync When Commit use Batch update ## Network

Introduction II Julia v1.3 Release Notes 2 New language features 3 Language changes 4 Multi-threading changes 5 Build system changes 6 New library functions 7 Standard library changes Libdl 31 Parallel Computing ..... 273 32 Coroutines ..... 275 32.1 Channels ..... 275 33 Multi-Threading (Experimental) ..... 279 33.1 Setup ..... 279 33.2 The @threads Macro ..... 279 33.3 Atomic 57.8 Combinatorics ..... 739 58 Tasks ..... 743 59 Scheduling ..... 749 60 Multi-Threading ..... 757 60.1 ccall using a threadpool (Experimental) ..... 762 61 Low-level synchronization

Channels ..... 315 24.3 More task operations ..... 319 24.4 Tasks and events ..... 320 25 Multi-Threading 321 25.1 Starting Julia with multiple threads 321 25.2 Threadpools 323 25.3 The @threads Macro Channels ..... 1142 49.4 Low-level synchronization using schedule and wait ..... 1149 50 Multi-Threading 50.1 Atomic operations ..... 1158 50.2 ccall using a libuv threadpool (Experimental) ..... 1171 Channels ..... 1142 49.4 Low-level synchronization using schedule and wait ..... 1149 50 Multi-Threading 50.1 Atomic operations ..... 1158 50.2 ccall using a libuv threadpool (Experimental) ..... 1171

Communicating with Channels 315 24.3 More task operations 319 24.4 Tasks and events ..... 320 25 Multi-Threading ..... 321 25.1 Starting Julia with multiple threads ..... 321 25.2 Threadpools ..... 323 25 Channels ..... 1145 49.4 Low-level synchronization using schedule and wait ..... 1152 50 Multi-Threading 50.1 Atomic operations ..... 1161 50.2 ccall using a libuv threadpool (Experimental) ..... 1174 runtime ..... 1931 106.18 Bounds checking ..... 1933 106.19 Proper maintenance and care of multi-threading locks ..... 1935 106.20 Arrays with custom indices ..... 1938 106.21 Module loading ..... 1942

Channels ..... 315 24.3 More task operations ..... 319 24.4 Tasks and events ..... 320 25 Multi-Threading 321 25.1 Starting Julia with multiple threads 321 25.2 Threadpools 323 25.3 The @threads Macro 1124 48.3 Channels 1134 48.4 Low-level synchronization using schedule and wait 1141 49 Multi-Threading 1144 49.1 Atomic operations 1150 49.2 ccall using a libuv threadpool (Experimental) 1163 49 runtime ..... 1919 105.18 Bounds checking ..... 1921 105.19 Proper maintenance and care of multi-threading locks ..... 1923 105.20 Arrays with custom indices ..... 1927 105.21 Module loading ..... 1930

Host provides view (e.g. NSView) - Host requests view (e.g. NSView) - We create an OS window ## Threading model - Hosts can call us from any thread Each host may do this differently ![Image](/uploads

Channels ..... 312 24.3 More task operations ..... 316 24.4 Tasks and events ..... 316 25 Multi-Threading 318 25.1 Starting Julia with multiple threads 318 25.2 Threadpools 320 25.3 The @threads Macro 1092 48.3 Channels 1102 48.4 Low-level synchronization using schedule and wait 1108 49 Multi-Threading 1110 49.1 Atomic operations 1116 49.2 ccall using a libuv threadpool (Experimental) 1127 49 runtime ..... 1877 105.18 Bounds checking ..... 1879 105.19 Proper maintenance and care of multi-threading locks ..... 1881 105.20 Arrays with custom indices ..... 1885 105.21 Module loading ..... 1889