▼ |  | Inside: Racket C API

1 | Overview
2 | Embedding into a Program
3 | Writing Racket Extensions
4 | Values and Types
5 | Memory Allocation
6 | Namespaces and Modules
7 | Procedures
8 | Evaluation
9 | Exceptions and Escape Continuations
10 | Threads
11 | Parameterizations
12 | Continuation Marks
13 | String Encodings
14 | Bignums, Rationals, and Complex Numbers
15 | Ports and the Filesystem
16 | Structures
17 | Security Guards
18 | Custodians
19 | Subprocesses
20 | Miscellaneous Utilities
| Index

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Inside: Racket C API

7.2
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## Inside: Racket C API

Matthew Flatt

This manual describes the C interface of Racket’s run-time system. The C interface is relevant primarily when interacting with foreign libraries as described in The Racket Foreign Interface; even though interactions with foreign code are constructed in pure Racket using the ffi/unsafe module, many details of representations, memory management, and concurrency are described here. This manual also describes embedding the Racket run-time system in larger programs and extending Racket directly with C-implemented libraries.

1 Overview
1.1 “Scheme” versus “Racket”
1.2 Building Racket from Source
1.3 CGC versus 3m
1.4 Embedding and Extending Racket
1.5 Racket and Places
1.6 Racket and Threads
1.7 Racket, Unicode, Characters, and Strings
1.8 Integers
2 Embedding into a Program
2.1 CGC Embedding
2.2 3m Embedding
2.3 Flags and Hooks
3 Writing Racket Extensions
3.1 CGC Extensions
3.2 3m Extensions
3.3 Declaring a Module in an Extension
4 Values and Types
4.1 Standard Types
4.2 Global Constants
4.3 Strings
4.4 Value Functions
5 Memory Allocation
5.1 Cooperating with 3m
5.1.1 Tagged Objects
5.1.2 Local Pointers
5.1.3 Local Pointers and raco ctool --xform
5.1.4 Guiding raco ctool --xform
5.1.5 Places and Garbage Collector Instances
5.2 Memory Functions
6 Namespaces and Modules
7 Procedures
8 Evaluation
8.1 Top-level Evaluation Functions
8.2 Tail Evaluation
8.3 Multiple Values
8.4 Evaluation Functions
9 Exceptions and Escape Continuations
9.1 Temporarily Catching Error Escapes
9.2 Enabling and Disabling Breaks
9.3 Exception Functions
10 Threads
10.1 Integration with Threads
10.2 Allowing Thread Switches
10.3 Blocking the Current Thread
10.4 Threads in Embedded Racket with Event Loops
10.4.1 Callbacks for Blocked Threads
10.5 Sleeping by Embedded Racket
10.6 Thread Functions
11 Parameterizations
12 Continuation Marks
13 String Encodings
14 Bignums, Rationals, and Complex Numbers
15 Ports and the Filesystem
16 Structures
17 Security Guards
18 Custodians
19 Subprocesses
20 Miscellaneous Utilities
Index

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