[ViewVC] Diff of: cvs/libcoro/coro.c

Comparing libcoro/coro.c (file contents):
Revision 1.27 by root, Wed May 2 05:53:26 2007 UTC vs.
Revision 1.56 by root, Mon May 30 02:32:06 2011 UTC

…		…
1	/*	1	/*
2	* Copyright (c) 2001-2006 Marc Alexander Lehmann <schmorp@schmorp.de>	2	* Copyright (c) 2001-2011 Marc Alexander Lehmann <schmorp@schmorp.de>
3	*	3	*
4	* Redistribution and use in source and binary forms, with or without modifica-	4	* Redistribution and use in source and binary forms, with or without modifica-
5	* tion, are permitted provided that the following conditions are met:	5	* tion, are permitted provided that the following conditions are met:
6	*	6	*
7	* 1. Redistributions of source code must retain the above copyright notice,	7	* 1. Redistributions of source code must retain the above copyright notice,
8	* this list of conditions and the following disclaimer.	8	* this list of conditions and the following disclaimer.
9	*	9	*
10	* 2. Redistributions in binary form must reproduce the above copyright	10	* 2. Redistributions in binary form must reproduce the above copyright
11	* notice, this list of conditions and the following disclaimer in the	11	* notice, this list of conditions and the following disclaimer in the
12	* documentation and/or other materials provided with the distribution.	12	* documentation and/or other materials provided with the distribution.
13	*
14	* 3. The name of the author may not be used to endorse or promote products
15	* derived from this software without specific prior written permission.
16	*	13	*
17	* THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR IMPLIED	14	* THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR IMPLIED
18	* WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MER-	15	* WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MER-
19	* CHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO	16	* CHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO
20	* EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPE-	17	* EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPE-
23	* OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY,	20	* OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY,
24	* WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTH-	21	* WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTH-
25	* ERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED	22	* ERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED
26	* OF THE POSSIBILITY OF SUCH DAMAGE.	23	* OF THE POSSIBILITY OF SUCH DAMAGE.
27	*	24	*
		25	* Alternatively, the contents of this file may be used under the terms of
		26	* the GNU General Public License ("GPL") version 2 or any later version,
		27	* in which case the provisions of the GPL are applicable instead of
		28	* the above. If you wish to allow the use of your version of this file
		29	* only under the terms of the GPL and not to allow others to use your
		30	* version of this file under the BSD license, indicate your decision
		31	* by deleting the provisions above and replace them with the notice
		32	* and other provisions required by the GPL. If you do not delete the
		33	* provisions above, a recipient may use your version of this file under
		34	* either the BSD or the GPL.
		35	*
28	* This library is modelled strictly after Ralf S. Engelschalls article at	36	* This library is modelled strictly after Ralf S. Engelschalls article at
29	* http://www.gnu.org/software/pth/rse-pmt.ps. So most of the credit must	37	* http://www.gnu.org/software/pth/rse-pmt.ps. So most of the credit must
30	* go to Ralf S. Engelschall <rse@engelschall.com>.	38	* go to Ralf S. Engelschall <rse@engelschall.com>.
31	*/	39	*/
32		40
33	#include "coro.h"	41	#include "coro.h"
34		42
		43	#include <string.h>
		44
		45	/*****************************************************************************/
		46	/* ucontext/setjmp/asm backends */
		47	/*****************************************************************************/
		48	#if CORO_UCONTEXT \|\| CORO_SJLJ \|\| CORO_LOSER \|\| CORO_LINUX \|\| CORO_IRIX \|\| CORO_ASM
		49
		50	# if CORO_UCONTEXT
		51	# include <stddef.h>
		52	# endif
		53
35	#if !defined(STACK_ADJUST_PTR)	54	# if !defined(STACK_ADJUST_PTR)
		55	# if __sgi
36	/* IRIX is decidedly NON-unix */	56	/* IRIX is decidedly NON-unix */
37	# if __sgi
38	# define STACK_ADJUST_PTR(sp,ss) ((char *)(sp) + (ss) - 8)	57	# define STACK_ADJUST_PTR(sp,ss) ((char *)(sp) + (ss) - 8)
39	# define STACK_ADJUST_SIZE(sp,ss) ((ss) - 8)	58	# define STACK_ADJUST_SIZE(sp,ss) ((ss) - 8)
40	# elif __i386__ && CORO_LINUX	59	# elif (__i386__ && CORO_LINUX) \|\| (_M_IX86 && CORO_LOSER)
41	# define STACK_ADJUST_PTR(sp,ss) ((char *)(sp) + (ss))	60	# define STACK_ADJUST_PTR(sp,ss) ((char *)(sp) + (ss))
42	# define STACK_ADJUST_SIZE(sp,ss) (ss)	61	# define STACK_ADJUST_SIZE(sp,ss) (ss)
43	# elif __amd64__ && CORO_LINUX	62	# elif (__amd64__ && CORO_LINUX) \|\| ((_M_AMD64 \|\| _M_IA64) && CORO_LOSER)
44	# define STACK_ADJUST_PTR(sp,ss) ((char *)(sp) + (ss) - 8)	63	# define STACK_ADJUST_PTR(sp,ss) ((char *)(sp) + (ss) - 8)
45	# define STACK_ADJUST_SIZE(sp,ss) (ss)	64	# define STACK_ADJUST_SIZE(sp,ss) (ss)
46	# else	65	# else
47	# define STACK_ADJUST_PTR(sp,ss) (sp)	66	# define STACK_ADJUST_PTR(sp,ss) (sp)
48	# define STACK_ADJUST_SIZE(sp,ss) (ss)	67	# define STACK_ADJUST_SIZE(sp,ss) (ss)
49	# endif	68	# endif
50	#endif	69	# endif
51		70
52	#if CORO_UCONTEXT
53	# include <stddef.h>
54	#endif
55
56	#if CORO_SJLJ \|\| CORO_LOSER \|\| CORO_LINUX \|\| CORO_IRIX \|\| CORO_ASM
57
58	#include <stdlib.h>	71	# include <stdlib.h>
59		72
60	#if CORO_SJLJ	73	# if CORO_SJLJ
61	# include <stdio.h>	74	# include <stdio.h>
62	# include <signal.h>	75	# include <signal.h>
63	# include <unistd.h>	76	# include <unistd.h>
64	#endif	77	# endif
65		78
66	static volatile coro_func coro_init_func;	79	static coro_func coro_init_func;
67	static volatile void *coro_init_arg;	80	static void *coro_init_arg;
68	static volatile coro_context new_coro, create_coro;	81	static coro_context new_coro, create_coro;
69
70	/* what we really want to detect here is wether we use a new-enough version of GAS */
71	/* instead, check for gcc 3 and ELF and hope for the best */
72	#if __GNUC__ >= 3 && __ELF__
73	# define HAVE_CFI 1
74	#endif
75		82
76	static void	83	static void
77	coro_init (void)	84	coro_init (void)
78	{	85	{
79	volatile coro_func func = coro_init_func;	86	volatile coro_func func = coro_init_func;
80	volatile void *arg = coro_init_arg;	87	volatile void *arg = coro_init_arg;
81		88
82	coro_transfer ((coro_context )new_coro, (coro_context )create_coro);	89	coro_transfer (new_coro, create_coro);
		90
		91	#ifdef __linux && __elf
		92	/* we blindly assume on any __linux with __elf we have a new enough gas with .cfi_undefined support */
		93	asm (".cfi_undefined rip");
		94	#endif
83		95
84	func ((void *)arg);	96	func ((void *)arg);
85		97
86	/* the new coro returned. bad. just abort() for now */	98	/* the new coro returned. bad. just abort() for now */
87	abort ();	99	abort ();
88	}	100	}
89		101
90	# if CORO_SJLJ	102	# if CORO_SJLJ
91		103
92	static volatile int trampoline_count;	104	static volatile int trampoline_done;
93		105
94	/* trampoline signal handler */	106	/* trampoline signal handler */
95	static void	107	static void
96	trampoline (int sig)	108	trampoline (int sig)
97	{	109	{
98	if (setjmp (((coro_context *)new_coro)->env))	110	if (coro_setjmp (new_coro->env))
99	{
100	#if HAVE_CFI
101	asm (".cfi_startproc");
102	#endif
103	coro_init (); /* start it */	111	coro_init (); /* start it */
104	#if HAVE_CFI
105	asm (".cfi_endproc");
106	#endif
107	}
108	else	112	else
109	trampoline_count++;	113	trampoline_done = 1;
110	}	114	}
111		115
112	# endif
113
114	#endif	116	# endif
115		117
116	#if CORO_ASM	118	# if CORO_ASM
117	void __attribute__((__noinline__, __fastcall__))	119
118	coro_transfer (struct coro_context prev, struct coro_context next)	120	asm (
119	{	121	".text\n"
120	asm volatile (	122	".globl coro_transfer\n"
		123	".type coro_transfer, @function\n"
		124	"coro_transfer:\n"
		125	/* windows, of course, gives a shit on the amd64 ABI and uses different registers */
		126	/* http://blogs.msdn.com/freik/archive/2005/03/17/398200.aspx */
121	#if __amd64	127	#if __amd64
122	# define NUM_CLOBBERED 5	128	#define NUM_SAVED 6
		129	"\tpush %rbp\n"
123	"push %%rbx\n\t"	130	"\tpush %rbx\n"
124	"push %%r12\n\t"	131	"\tpush %r12\n"
125	"push %%r13\n\t"	132	"\tpush %r13\n"
126	"push %%r14\n\t"	133	"\tpush %r14\n"
127	"push %%r15\n\t"	134	"\tpush %r15\n"
128	"mov %%rsp, %0\n\t"	135	#if CORO_WIN_TIB
129	"mov %1, %%rsp\n\t"	136	"\tpush %gs:0x0\n"
		137	"\tpush %gs:0x8\n"
		138	"\tpush %gs:0xc\n"
		139	#endif
		140	"\tmov %rsp, (%rdi)\n"
		141	"\tmov (%rsi), %rsp\n"
		142	#if CORO_WIN_TIB
		143	"\tpop %gs:0xc\n"
		144	"\tpop %gs:0x8\n"
		145	"\tpop %gs:0x0\n"
		146	#endif
130	"pop %%r15\n\t"	147	"\tpop %r15\n"
131	"pop %%r14\n\t"	148	"\tpop %r14\n"
132	"pop %%r13\n\t"	149	"\tpop %r13\n"
133	"pop %%r12\n\t"	150	"\tpop %r12\n"
134	"pop %%rbx\n\t"	151	"\tpop %rbx\n"
		152	"\tpop %rbp\n"
135	#elif __i386	153	#elif __i386
136	# define NUM_CLOBBERED 4	154	#define NUM_SAVED 4
137	"push %%ebx\n\t"
138	"push %%esi\n\t"
139	"push %%edi\n\t"
140	"push %%ebp\n\t"	155	"\tpush %ebp\n"
141	"mov %%esp, %0\n\t"	156	"\tpush %ebx\n"
142	"mov %1, %%esp\n\t"	157	"\tpush %esi\n"
143	"pop %%ebp\n\t"	158	"\tpush %edi\n"
		159	#if CORO_WIN_TIB
		160	"\tpush %fs:0\n"
		161	"\tpush %fs:4\n"
		162	"\tpush %fs:8\n"
		163	#endif
		164	"\tmov %esp, (%eax)\n"
		165	"\tmov (%edx), %esp\n"
		166	#if CORO_WIN_TIB
		167	"\tpop %fs:8\n"
		168	"\tpop %fs:4\n"
		169	"\tpop %fs:0\n"
		170	#endif
144	"pop %%edi\n\t"	171	"\tpop %edi\n"
145	"pop %%esi\n\t"	172	"\tpop %esi\n"
146	"pop %%ebx\n\t"	173	"\tpop %ebx\n"
147	#else	174	"\tpop %ebp\n"
		175	#else
148	# error unsupported architecture	176	#error unsupported architecture
149	#endif	177	#endif
150	: "=m" (prev->sp)	178	"\tret\n"
151	: "m" (next->sp)
152	);	179	);
153	}	180
154	#endif	181	# endif
155		182
156	/* initialize a machine state */	183	void
157	void coro_create (coro_context *ctx,	184	coro_create (coro_context ctx, coro_func coro, void arg, void *sptr, long ssize)
158	coro_func coro, void *arg,
159	void *sptr, long ssize)
160	{	185	{
161	#if CORO_UCONTEXT	186	coro_context nctx;
162
163	getcontext (&(ctx->uc));
164
165	ctx->uc.uc_link = 0;
166	ctx->uc.uc_stack.ss_sp = STACK_ADJUST_PTR (sptr,ssize);
167	ctx->uc.uc_stack.ss_size = (size_t) STACK_ADJUST_SIZE (sptr,ssize);
168	ctx->uc.uc_stack.ss_flags = 0;
169
170	makecontext (&(ctx->uc), (void (*)()) coro, 1, arg);
171
172	#elif CORO_SJLJ \|\| CORO_LOSER \|\| CORO_LINUX \|\| CORO_IRIX \|\| CORO_ASM
173
174	# if CORO_SJLJ	187	# if CORO_SJLJ
175	stack_t ostk, nstk;	188	stack_t ostk, nstk;
176	struct sigaction osa, nsa;	189	struct sigaction osa, nsa;
177	sigset_t nsig, osig;	190	sigset_t nsig, osig;
178	# endif	191	# endif
179	coro_context nctx;	192
		193	if (!coro)
		194	return;
180		195
181	coro_init_func = coro;	196	coro_init_func = coro;
182	coro_init_arg = arg;	197	coro_init_arg = arg;
183		198
184	new_coro = ctx;	199	new_coro = ctx;
…		…
200	perror ("sigaction");	215	perror ("sigaction");
201	abort ();	216	abort ();
202	}	217	}
203		218
204	/* set the new stack */	219	/* set the new stack */
205	nstk.ss_sp = STACK_ADJUST_PTR (sptr,ssize); /* yes, some platforms (IRIX) get this wrong. */	220	nstk.ss_sp = STACK_ADJUST_PTR (sptr, ssize); /* yes, some platforms (IRIX) get this wrong. */
206	nstk.ss_size = STACK_ADJUST_SIZE (sptr,ssize);	221	nstk.ss_size = STACK_ADJUST_SIZE (sptr, ssize);
207	nstk.ss_flags = 0;	222	nstk.ss_flags = 0;
208		223
209	if (sigaltstack (&nstk, &ostk) < 0)	224	if (sigaltstack (&nstk, &ostk) < 0)
210	{	225	{
211	perror ("sigaltstack");	226	perror ("sigaltstack");
212	abort ();	227	abort ();
213	}	228	}
214		229
215	trampoline_count = 0;	230	trampoline_done = 0;
216	kill (getpid (), SIGUSR2);	231	kill (getpid (), SIGUSR2);
217	sigfillset (&nsig); sigdelset (&nsig, SIGUSR2);	232	sigfillset (&nsig); sigdelset (&nsig, SIGUSR2);
218		233
219	while (!trampoline_count)	234	while (!trampoline_done)
220	sigsuspend (&nsig);	235	sigsuspend (&nsig);
221		236
222	sigaltstack (0, &nstk);	237	sigaltstack (0, &nstk);
223	nstk.ss_flags = SS_DISABLE;	238	nstk.ss_flags = SS_DISABLE;
224	if (sigaltstack (&nstk, 0) < 0)	239	if (sigaltstack (&nstk, 0) < 0)
…		…
230		245
231	if (~ostk.ss_flags & SS_DISABLE)	246	if (~ostk.ss_flags & SS_DISABLE)
232	sigaltstack (&ostk, 0);	247	sigaltstack (&ostk, 0);
233		248
234	sigaction (SIGUSR2, &osa, 0);	249	sigaction (SIGUSR2, &osa, 0);
235
236	sigprocmask (SIG_SETMASK, &osig, 0);	250	sigprocmask (SIG_SETMASK, &osig, 0);
237		251
238	# elif CORO_LOSER	252	# elif CORO_LOSER
239		253
240	setjmp (ctx->env);	254	coro_setjmp (ctx->env);
241	#if __CYGWIN__	255	#if __CYGWIN__ && __i386
242	ctx->env[7] = (long)((char *)sptr + ssize);	256	ctx->env[8] = (long) coro_init;
243	ctx->env[8] = (long)coro_init;	257	ctx->env[7] = (long) ((char *)sptr + ssize) - sizeof (long);
		258	#elif __CYGWIN__ && __x86_64
		259	ctx->env[7] = (long) coro_init;
		260	ctx->env[6] = (long) ((char *)sptr + ssize) - sizeof (long);
		261	#elif defined(__MINGW32__)
		262	ctx->env[5] = (long) coro_init;
		263	ctx->env[4] = (long) ((char *)sptr + ssize) - sizeof (long);
244	#elif defined(_M_IX86)	264	#elif defined(_M_IX86)
245	((_JUMP_BUFFER *)&ctx->env)->Eip = (long)coro_init;	265	((_JUMP_BUFFER *)&ctx->env)->Eip = (long) coro_init;
246	((_JUMP_BUFFER *)&ctx->env)->Esp = (long)STACK_ADJUST_PTR (sptr,ssize);	266	((_JUMP_BUFFER *)&ctx->env)->Esp = (long) STACK_ADJUST_PTR (sptr, ssize) - sizeof (long);
247	#elif defined(_M_AMD64)	267	#elif defined(_M_AMD64)
248	((_JUMP_BUFFER *)&ctx->env)->Rip = (__int64)coro_init;	268	((_JUMP_BUFFER *)&ctx->env)->Rip = (__int64) coro_init;
249	((_JUMP_BUFFER *)&ctx->env)->Rsp = (__int64)STACK_ADJUST_PTR (sptr,ssize);	269	((_JUMP_BUFFER *)&ctx->env)->Rsp = (__int64) STACK_ADJUST_PTR (sptr, ssize) - sizeof (__int64);
250	#elif defined(_M_IA64)	270	#elif defined(_M_IA64)
251	((_JUMP_BUFFER *)&ctx->env)->StIIP = (__int64)coro_init;	271	((_JUMP_BUFFER *)&ctx->env)->StIIP = (__int64) coro_init;
252	((_JUMP_BUFFER *)&ctx->env)->IntSp = (__int64)STACK_ADJUST_PTR (sptr,ssize);	272	((_JUMP_BUFFER *)&ctx->env)->IntSp = (__int64) STACK_ADJUST_PTR (sptr, ssize) - sizeof (__int64);
		273	#else
		274	#error "microsoft libc or architecture not supported"
		275	#endif
		276
		277	# elif CORO_LINUX
		278
		279	coro_setjmp (ctx->env);
		280	#if __GLIBC__ >= 2 && __GLIBC_MINOR__ >= 0 && defined (JB_PC) && defined (JB_SP)
		281	ctx->env[0].__jmpbuf[JB_PC] = (long) coro_init;
		282	ctx->env[0].__jmpbuf[JB_SP] = (long) STACK_ADJUST_PTR (sptr, ssize) - sizeof (long);
		283	#elif __GLIBC__ >= 2 && __GLIBC_MINOR__ >= 0 && defined (__mc68000__)
		284	ctx->env[0].__jmpbuf[0].__aregs[0] = (long int)coro_init;
		285	ctx->env[0].__jmpbuf[0].__sp = (int ) ((char )sptr + ssize) - sizeof (long);
		286	#elif defined (__GNU_LIBRARY__) && defined (__i386__)
		287	ctx->env[0].__jmpbuf[0].__pc = (char *) coro_init;
		288	ctx->env[0].__jmpbuf[0].__sp = (void ) ((char )sptr + ssize) - sizeof (long);
		289	#elif defined (__GNU_LIBRARY__) && defined (__amd64__)
		290	ctx->env[0].__jmpbuf[JB_PC] = (long) coro_init;
		291	ctx->env[0].__jmpbuf[0].__sp = (void ) ((char )sptr + ssize) - sizeof (long);
		292	#else
		293	#error "linux libc or architecture not supported"
		294	#endif
		295
		296	# elif CORO_IRIX
		297
		298	coro_setjmp (ctx->env, 0);
		299	ctx->env[JB_PC] = (__uint64_t)coro_init;
		300	ctx->env[JB_SP] = (__uint64_t)STACK_ADJUST_PTR (sptr, ssize) - sizeof (long);
		301
		302	# elif CORO_ASM
		303
		304	ctx->sp = (void *)(ssize + (char )sptr);
		305	--ctx->sp = (void )abort; /* needed for alignment only */
		306	--ctx->sp = (void )coro_init;
		307
		308	#if CORO_WIN_TIB
		309	--ctx->sp = 0; / ExceptionList */
		310	--ctx->sp = (char )sptr + ssize; /* StackBase */
		311	--ctx->sp = sptr; / StackLimit */
		312	#endif
		313
		314	ctx->sp -= NUM_SAVED;
		315	memset (ctx->sp, 0, sizeof (ctx->sp) NUM_SAVED);
		316
		317	# elif CORO_UCONTEXT
		318
		319	getcontext (&(ctx->uc));
		320
		321	ctx->uc.uc_link = 0;
		322	ctx->uc.uc_stack.ss_sp = sptr;
		323	ctx->uc.uc_stack.ss_size = (size_t)ssize;
		324	ctx->uc.uc_stack.ss_flags = 0;
		325
		326	makecontext (&(ctx->uc), (void (*)())coro_init, 0);
		327
		328	# endif
		329
		330	coro_transfer (create_coro, new_coro);
		331	}
		332
		333	/*****************************************************************************/
		334	/* pthread backend */
		335	/*****************************************************************************/
		336	#elif CORO_PTHREAD
		337
		338	/* this mutex will be locked by the running coroutine */
		339	pthread_mutex_t coro_mutex = PTHREAD_MUTEX_INITIALIZER;
		340
		341	struct coro_init_args
		342	{
		343	coro_func func;
		344	void *arg;
		345	coro_context self, main;
		346	};
		347
		348	static pthread_t null_tid;
		349
		350	/* I'd so love to cast pthread_mutex_unlock to void ()(void )... */
		351	static void
		352	mutex_unlock_wrapper (void *arg)
		353	{
		354	pthread_mutex_unlock ((pthread_mutex_t *)arg);
		355	}
		356
		357	static void *
		358	coro_init (void *args_)
		359	{
		360	struct coro_init_args args = (struct coro_init_args )args_;
		361	coro_func func = args->func;
		362	void *arg = args->arg;
		363
		364	pthread_mutex_lock (&coro_mutex);
		365
		366	/* we try to be good citizens and use deferred cancellation and cleanup handlers */
		367	pthread_cleanup_push (mutex_unlock_wrapper, &coro_mutex);
		368	coro_transfer (args->self, args->main);
		369	func (arg);
		370	pthread_cleanup_pop (1);
		371
		372	return 0;
		373	}
		374
		375	void
		376	coro_transfer (coro_context prev, coro_context next)
		377	{
		378	pthread_cond_signal (&next->cv);
		379	pthread_cond_wait (&prev->cv, &coro_mutex);
		380	#if __FreeBSD__ /* freebsd is of course broken and needs manual testcancel calls... yay... */
		381	pthread_testcancel ();
		382	#endif
		383	}
		384
		385	void
		386	coro_create (coro_context ctx, coro_func coro, void arg, void *sptr, long ssize)
		387	{
		388	static coro_context nctx;
		389	static int once;
		390
		391	if (!once)
		392	{
		393	once = 1;
		394
		395	pthread_mutex_lock (&coro_mutex);
		396	pthread_cond_init (&nctx.cv, 0);
		397	null_tid = pthread_self ();
		398	}
		399
		400	pthread_cond_init (&ctx->cv, 0);
		401
		402	if (coro)
		403	{
		404	pthread_attr_t attr;
		405	struct coro_init_args args;
		406
		407	args.func = coro;
		408	args.arg = arg;
		409	args.self = ctx;
		410	args.main = &nctx;
		411
		412	pthread_attr_init (&attr);
		413	#if __UCLIBC__
		414	/* exists, but is borked */
		415	/pthread_attr_setstacksize (&attr, (size_t)ssize);/
253	#else	416	#else
254	#error "microsoft libc or architecture not supported"	417	pthread_attr_setstack (&attr, sptr, (size_t)ssize);
255	#endif	418	#endif
		419	pthread_attr_setscope (&attr, PTHREAD_SCOPE_PROCESS);
		420	pthread_create (&ctx->id, &attr, coro_init, &args);
256		421
257	# elif CORO_LINUX	422	coro_transfer (args.main, args.self);
		423	}
		424	else
		425	ctx->id = null_tid;
		426	}
258		427
259	_setjmp (ctx->env);	428	void
260	#if __GLIBC__ >= 2 && __GLIBC_MINOR__ >= 0 && defined (JB_PC) && defined (JB_SP)	429	coro_destroy (coro_context *ctx)
261	ctx->env[0].__jmpbuf[JB_PC] = (long)coro_init;	430	{
262	ctx->env[0].__jmpbuf[JB_SP] = (long)STACK_ADJUST_PTR (sptr, ssize);	431	if (!pthread_equal (ctx->id, null_tid))
263	#elif __GLIBC__ >= 2 && __GLIBC_MINOR__ >= 0 && defined (__mc68000__)	432	{
264	ctx->env[0].__jmpbuf[0].__aregs[0] = (long int)coro_init;	433	pthread_cancel (ctx->id);
265	ctx->env[0].__jmpbuf[0].__sp = (int )((char )sptr + ssize);	434	pthread_mutex_unlock (&coro_mutex);
266	#elif defined (__GNU_LIBRARY__) && defined (__i386__)	435	pthread_join (ctx->id, 0);
267	ctx->env[0].__jmpbuf[0].__pc = (char *)coro_init;	436	pthread_mutex_lock (&coro_mutex);
268	ctx->env[0].__jmpbuf[0].__sp = (void )((char )sptr + ssize);	437	}
269	#elif defined (__GNU_LIBRARY__) && defined (__amd64__)	438
270	ctx->env[0].__jmpbuf[JB_PC] = (long)coro_init;	439	pthread_cond_destroy (&ctx->cv);
271	ctx->env[0].__jmpbuf[JB_RSP] = (long)STACK_ADJUST_PTR (sptr, ssize);	440	}
		441
272	#else	442	#else
273	# error "linux libc or architecture not supported"	443	# error unsupported backend
274	#endif	444	#endif
275		445
276	# elif CORO_IRIX
277
278	setjmp (ctx->env);
279	ctx->env[JB_PC] = (__uint64_t)coro_init;
280	ctx->env[JB_SP] = (__uint64_t)STACK_ADJUST_PTR (sptr, ssize);
281
282	# elif CORO_ASM
283
284	ctx->sp = (volatile void *)(ssize + (char )sptr);
285	--ctx->sp = (void )coro_init;
286	--ctx->sp = (void )coro_init; // this is needed when the prologue saves ebp
287	ctx->sp -= NUM_CLOBBERED;
288
289	# endif
290
291	coro_transfer ((coro_context )create_coro, (coro_context )new_coro);
292
293	#else
294	# error unsupported architecture
295	#endif
296	}
297

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Comparing libcoro/coro.c (file contents): Revision 1.27 by root, Wed May 2 05:53:26 2007 UTC vs. Revision 1.56 by root, Mon May 30 02:32:06 2011 UTC

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Comparing libcoro/coro.c (file contents):
Revision 1.27 by root, Wed May 2 05:53:26 2007 UTC vs.
Revision 1.56 by root, Mon May 30 02:32:06 2011 UTC