| … | |
… | |
| 30 | * go to Ralf S. Engelschall <rse@engelschall.com>. |
30 | * go to Ralf S. Engelschall <rse@engelschall.com>. |
| 31 | * |
31 | * |
| 32 | * This coroutine library is very much stripped down. You should either |
32 | * This coroutine library is very much stripped down. You should either |
| 33 | * build your own process avstraction using it or - better - just use GNU |
33 | * build your own process avstraction using it or - better - just use GNU |
| 34 | * Portable Threads, http://www.gnu.org/software/pth/. |
34 | * Portable Threads, http://www.gnu.org/software/pth/. |
|
|
35 | * |
|
|
36 | * VERSION: 0.1 |
| 35 | */ |
37 | */ |
| 36 | |
38 | |
| 37 | #ifndef CORO_H |
39 | #ifndef CORO_H |
| 38 | #define CORO_H |
40 | #define CORO_H |
| 39 | |
41 | |
| … | |
… | |
| 55 | * |
57 | * |
| 56 | * This flavour uses SUSv'2 setjmp/longjmp and sigaltstack functions to |
58 | * This flavour uses SUSv'2 setjmp/longjmp and sigaltstack functions to |
| 57 | * do it's job. Coroutine creation is much slower than UCONTEXT, but |
59 | * do it's job. Coroutine creation is much slower than UCONTEXT, but |
| 58 | * context switching is often a bit cheaper. It should work on almost |
60 | * context switching is often a bit cheaper. It should work on almost |
| 59 | * all unices. Use this for GNU/Linux + glibc-2.2. glibc-2.1 and below |
61 | * all unices. Use this for GNU/Linux + glibc-2.2. glibc-2.1 and below |
| 60 | * do not work with any model (neither sigaltstack nor context functions |
62 | * do not work with any sane model (neither sigaltstack nor context |
| 61 | * are implemented) |
63 | * functions are implemented) |
|
|
64 | * |
|
|
65 | * -DCORO_LINUX |
|
|
66 | * |
|
|
67 | * Old GNU/Linux systems (<= glibc-2.1) work with this implementation |
|
|
68 | * (very fast). |
| 62 | * |
69 | * |
| 63 | * -DCORO_LOOSE |
70 | * -DCORO_LOOSE |
| 64 | * |
71 | * |
| 65 | * Microsoft's highly proprietary platform doesn't support sigaltstack, and |
72 | * Microsoft's highly proprietary platform doesn't support sigaltstack, and |
| 66 | * this automatically selects a suitable workaround for this platform. |
73 | * this automatically selects a suitable workaround for this platform. |
| … | |
… | |
| 106 | |
113 | |
| 107 | /* |
114 | /* |
| 108 | * That was it. No other user-visible functions are implemented here. |
115 | * That was it. No other user-visible functions are implemented here. |
| 109 | */ |
116 | */ |
| 110 | |
117 | |
| 111 | #if !defined(CORO_LOOSE) && !defined(CORO_UCONTEXT) && !defined(CORO_SJLJ) |
118 | #if !defined(CORO_LOOSE) && !defined(CORO_UCONTEXT) \ |
|
|
119 | && !defined(CORO_SJLJ) && !defined(CORO_LINUX) |
| 112 | # if defined(WINDOWS) |
120 | # if defined(WINDOWS) |
| 113 | # define CORO_LOOSE 1 /* you don't win with windoze */ |
121 | # define CORO_LOOSE 1 /* you don't win with windoze */ |
|
|
122 | # elif defined(__linux) && defined(__x86) |
| 114 | # elif defined(HAVE_UCONTEXT_H) |
123 | # elif defined(HAVE_UCONTEXT_H) |
| 115 | # define CORO_UCONTEXT 1 |
124 | # define CORO_UCONTEXT 1 |
| 116 | # elif defined(HAVE_SETJMP_H) && defined(HAVE_SIGALTSTACK) |
125 | # elif defined(HAVE_SETJMP_H) && defined(HAVE_SIGALTSTACK) |
| 117 | # define CORO_SJLJ 1 |
126 | # define CORO_SJLJ 1 |
| 118 | # else |
127 | # else |
| … | |
… | |
| 128 | ucontext_t uc; |
137 | ucontext_t uc; |
| 129 | }; |
138 | }; |
| 130 | |
139 | |
| 131 | #define coro_transfer(p,n) swapcontext(&((p)->uc), &((n)->uc)) |
140 | #define coro_transfer(p,n) swapcontext(&((p)->uc), &((n)->uc)) |
| 132 | |
141 | |
| 133 | #elif CORO_SJLJ || CORO_LOOSE |
142 | #elif CORO_SJLJ || CORO_LOOSE || CORO_LINUX |
| 134 | |
143 | |
| 135 | #include <setjmp.h> |
144 | #include <setjmp.h> |
| 136 | |
145 | |
| 137 | struct coro_context { |
146 | struct coro_context { |
| 138 | jmp_buf env; |
147 | jmp_buf env; |
