glk-sys 0.2.0

Raw FFI bindings & build script to link against Glk
Documentation 
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21

/** Implements glk_exit and a wrapper around glk_main that facilitates a
 * more usable control flow using setjmp/longjmp at the C side.
 */
#include "glk.h"

#include <setjmp.h>

/** Static jump buffer.
 */
static _Thread_local jmp_buf jmpbuf;

void GLK_ATTRIBUTE_NORETURN glk_exit(void) {
    /* This function may never return. */
    longjmp(jmpbuf, 1);
}

void wrap_glk_main(void) {
    if (setjmp(jmpbuf) == 0) {
        glk_main();
    }
}