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

Comparing libcoro/coro.c (file contents):
Revision 1.37 by root, Fri Nov 7 16:39:35 2008 UTC vs.
Revision 1.44 by root, Wed Nov 19 02:56:16 2008 UTC

…		…
38	* go to Ralf S. Engelschall <rse@engelschall.com>.	38	* go to Ralf S. Engelschall <rse@engelschall.com>.
39	*/	39	*/
40		40
41	#include "coro.h"	41	#include "coro.h"
42		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
43	#if !defined(STACK_ADJUST_PTR)	54	# if !defined(STACK_ADJUST_PTR)
		55	# if __sgi
44	/* IRIX is decidedly NON-unix */	56	/* IRIX is decidedly NON-unix */
45	# if __sgi
46	# define STACK_ADJUST_PTR(sp,ss) ((char *)(sp) + (ss) - 8)	57	# define STACK_ADJUST_PTR(sp,ss) ((char *)(sp) + (ss) - 8)
47	# define STACK_ADJUST_SIZE(sp,ss) ((ss) - 8)	58	# define STACK_ADJUST_SIZE(sp,ss) ((ss) - 8)
48	# elif (__i386__ && CORO_LINUX) \|\| (_M_IX86 && CORO_LOSER)	59	# elif (__i386__ && CORO_LINUX) \|\| (_M_IX86 && CORO_LOSER)
49	# define STACK_ADJUST_PTR(sp,ss) ((char *)(sp) + (ss))	60	# define STACK_ADJUST_PTR(sp,ss) ((char *)(sp) + (ss))
50	# define STACK_ADJUST_SIZE(sp,ss) (ss)	61	# define STACK_ADJUST_SIZE(sp,ss) (ss)
51	# elif (__amd64__ && CORO_LINUX) \|\| ((_M_AMD64 \|\| _M_IA64) && CORO_LOSER)	62	# elif (__amd64__ && CORO_LINUX) \|\| ((_M_AMD64 \|\| _M_IA64) && CORO_LOSER)
52	# define STACK_ADJUST_PTR(sp,ss) ((char *)(sp) + (ss) - 8)	63	# define STACK_ADJUST_PTR(sp,ss) ((char *)(sp) + (ss) - 8)
53	# define STACK_ADJUST_SIZE(sp,ss) (ss)	64	# define STACK_ADJUST_SIZE(sp,ss) (ss)
54	# else	65	# else
55	# define STACK_ADJUST_PTR(sp,ss) (sp)	66	# define STACK_ADJUST_PTR(sp,ss) (sp)
56	# define STACK_ADJUST_SIZE(sp,ss) (ss)	67	# define STACK_ADJUST_SIZE(sp,ss) (ss)
57	# endif	68	# endif
58	#endif	69	# endif
59		70
60	#if CORO_UCONTEXT
61	# include <stddef.h>
62	#endif
63
64	#if CORO_SJLJ \|\| CORO_LOSER \|\| CORO_LINUX \|\| CORO_IRIX \|\| CORO_ASM
65
66	#include <stdlib.h>	71	# include <stdlib.h>
67		72
68	#if CORO_SJLJ	73	# if CORO_SJLJ
69	# include <stdio.h>	74	# include <stdio.h>
70	# include <signal.h>	75	# include <signal.h>
71	# include <unistd.h>	76	# include <unistd.h>
72	#endif	77	# endif
73		78
74	static volatile coro_func coro_init_func;	79	static coro_func coro_init_func;
75	static volatile void *coro_init_arg;	80	static void *coro_init_arg;
76	static volatile coro_context new_coro, create_coro;	81	static coro_context new_coro, create_coro;
77
78	/* what we really want to detect here is wether we use a new-enough version of GAS */
79	/* instead, check for gcc 3, ELF and GNU/Linux and hope for the best */
80	#if __GNUC__ >= 3 && __ELF__ && __linux__
81	# define HAVE_CFI 1
82	#endif
83		82
84	static void	83	static void
85	coro_init (void)	84	coro_init (void)
86	{	85	{
87	volatile coro_func func = coro_init_func;	86	volatile coro_func func = coro_init_func;
88	volatile void *arg = coro_init_arg;	87	volatile void *arg = coro_init_arg;
89		88
90	coro_transfer ((coro_context )new_coro, (coro_context )create_coro);	89	coro_transfer (new_coro, create_coro);
91		90
92	func ((void *)arg);	91	func ((void *)arg);
93		92
94	/* the new coro returned. bad. just abort() for now */	93	/* the new coro returned. bad. just abort() for now */
95	abort ();	94	abort ();
96	}	95	}
97		96
98	# if CORO_SJLJ	97	# if CORO_SJLJ
99		98
100	static volatile int trampoline_count;	99	static volatile int trampoline_done;
101		100
102	/* trampoline signal handler */	101	/* trampoline signal handler */
103	static void	102	static void
104	trampoline (int sig)	103	trampoline (int sig)
105	{	104	{
106	if (setjmp (((coro_context *)new_coro)->env))	105	if (coro_setjmp (new_coro->env))
107	{
108	#if HAVE_CFI
109	asm (".cfi_startproc");
110	#endif
111	coro_init (); /* start it */	106	coro_init (); /* start it */
112	#if HAVE_CFI
113	asm (".cfi_endproc");
114	#endif
115	}
116	else	107	else
117	trampoline_count++;	108	trampoline_done = 1;
118	}	109	}
119		110
120	# endif
121
122	#endif	111	# endif
123		112
124	#if CORO_ASM	113	# if CORO_ASM
		114
125	asm (	115	asm (
126	".text\n"	116	".text\n"
127	".globl coro_transfer\n"	117	".globl coro_transfer\n"
128	".type coro_transfer, @function\n"	118	".type coro_transfer, @function\n"
129	"coro_transfer:\n"	119	"coro_transfer:\n"
130	#if __amd64	120	#if __amd64
131	# define NUM_SAVED 6	121	#define NUM_SAVED 6
132	"\tpush %rbp\n"	122	"\tpush %rbp\n"
133	"\tpush %rbx\n"	123	"\tpush %rbx\n"
134	"\tpush %r12\n"	124	"\tpush %r12\n"
135	"\tpush %r13\n"	125	"\tpush %r13\n"
136	"\tpush %r14\n"	126	"\tpush %r14\n"
137	"\tpush %r15\n"	127	"\tpush %r15\n"
138	"\tmov %rsp, (%rdi)\n"	128	"\tmov %rsp, (%rdi)\n"
139	"\tmov (%rsi), %rsp\n"	129	"\tmov (%rsi), %rsp\n"
140	"\tpop %r15\n"	130	"\tpop %r15\n"
141	"\tpop %r14\n"	131	"\tpop %r14\n"
142	"\tpop %r13\n"	132	"\tpop %r13\n"
143	"\tpop %r12\n"	133	"\tpop %r12\n"
144	"\tpop %rbx\n"	134	"\tpop %rbx\n"
145	"\tpop %rbp\n"	135	"\tpop %rbp\n"
146	#elif __i386	136	#elif __i386
147	# define NUM_SAVED 4	137	#define NUM_SAVED 4
148	"\tpush %ebp\n"	138	"\tpush %ebp\n"
149	"\tpush %ebx\n"	139	"\tpush %ebx\n"
150	"\tpush %esi\n"	140	"\tpush %esi\n"
151	"\tpush %edi\n"	141	"\tpush %edi\n"
152	"\tmov %esp, (%eax)\n"	142	"\tmov %esp, (%eax)\n"
153	"\tmov (%edx), %esp\n"	143	"\tmov (%edx), %esp\n"
154	"\tpop %edi\n"	144	"\tpop %edi\n"
155	"\tpop %esi\n"	145	"\tpop %esi\n"
156	"\tpop %ebx\n"	146	"\tpop %ebx\n"
157	"\tpop %ebp\n"	147	"\tpop %ebp\n"
158	#else	148	#else
159	# error unsupported architecture	149	#error unsupported architecture
160	#endif	150	#endif
161	"\tret\n"	151	"\tret\n"
162	);	152	);
		153
163	#endif	154	# endif
164		155
		156	void
		157	coro_create (coro_context ctx, coro_func coro, void arg, void *sptr, long ssize)
		158	{
		159	coro_context nctx;
		160	# if CORO_SJLJ
		161	stack_t ostk, nstk;
		162	struct sigaction osa, nsa;
		163	sigset_t nsig, osig;
		164	# endif
		165
		166	if (!coro)
		167	return;
		168
		169	coro_init_func = coro;
		170	coro_init_arg = arg;
		171
		172	new_coro = ctx;
		173	create_coro = &nctx;
		174
		175	# if CORO_SJLJ
		176	/* we use SIGUSR2. first block it, then fiddle with it. */
		177
		178	sigemptyset (&nsig);
		179	sigaddset (&nsig, SIGUSR2);
		180	sigprocmask (SIG_BLOCK, &nsig, &osig);
		181
		182	nsa.sa_handler = trampoline;
		183	sigemptyset (&nsa.sa_mask);
		184	nsa.sa_flags = SA_ONSTACK;
		185
		186	if (sigaction (SIGUSR2, &nsa, &osa))
		187	{
		188	perror ("sigaction");
		189	abort ();
		190	}
		191
		192	/* set the new stack */
		193	nstk.ss_sp = STACK_ADJUST_PTR (sptr,ssize); /* yes, some platforms (IRIX) get this wrong. */
		194	nstk.ss_size = STACK_ADJUST_SIZE (sptr,ssize);
		195	nstk.ss_flags = 0;
		196
		197	if (sigaltstack (&nstk, &ostk) < 0)
		198	{
		199	perror ("sigaltstack");
		200	abort ();
		201	}
		202
		203	trampoline_done = 0;
		204	kill (getpid (), SIGUSR2);
		205	sigfillset (&nsig); sigdelset (&nsig, SIGUSR2);
		206
		207	while (!trampoline_done)
		208	sigsuspend (&nsig);
		209
		210	sigaltstack (0, &nstk);
		211	nstk.ss_flags = SS_DISABLE;
		212	if (sigaltstack (&nstk, 0) < 0)
		213	perror ("sigaltstack");
		214
		215	sigaltstack (0, &nstk);
		216	if (~nstk.ss_flags & SS_DISABLE)
		217	abort ();
		218
		219	if (~ostk.ss_flags & SS_DISABLE)
		220	sigaltstack (&ostk, 0);
		221
		222	sigaction (SIGUSR2, &osa, 0);
		223	sigprocmask (SIG_SETMASK, &osig, 0);
		224
		225	# elif CORO_LOSER
		226
		227	coro_setjmp (ctx->env);
		228	#if __CYGWIN__
		229	ctx->env[7] = (long)((char *)sptr + ssize) - sizeof (long);
		230	ctx->env[8] = (long)coro_init;
		231	#elif defined(_M_IX86)
		232	((_JUMP_BUFFER *)&ctx->env)->Eip = (long)coro_init;
		233	((_JUMP_BUFFER *)&ctx->env)->Esp = (long)STACK_ADJUST_PTR (sptr, ssize) - sizeof (long);
		234	#elif defined(_M_AMD64)
		235	((_JUMP_BUFFER *)&ctx->env)->Rip = (__int64)coro_init;
		236	((_JUMP_BUFFER *)&ctx->env)->Rsp = (__int64)STACK_ADJUST_PTR (sptr, ssize) - sizeof (long);
		237	#elif defined(_M_IA64)
		238	((_JUMP_BUFFER *)&ctx->env)->StIIP = (__int64)coro_init;
		239	((_JUMP_BUFFER *)&ctx->env)->IntSp = (__int64)STACK_ADJUST_PTR (sptr, ssize) - sizeof (long);
		240	#else
		241	#error "microsoft libc or architecture not supported"
		242	#endif
		243
		244	# elif CORO_LINUX
		245
		246	coro_setjmp (ctx->env);
		247	#if __GLIBC__ >= 2 && __GLIBC_MINOR__ >= 0 && defined (JB_PC) && defined (JB_SP)
		248	ctx->env[0].__jmpbuf[JB_PC] = (long)coro_init;
		249	ctx->env[0].__jmpbuf[JB_SP] = (long)STACK_ADJUST_PTR (sptr, ssize) - sizeof (long);
		250	#elif __GLIBC__ >= 2 && __GLIBC_MINOR__ >= 0 && defined (__mc68000__)
		251	ctx->env[0].__jmpbuf[0].__aregs[0] = (long int)coro_init;
		252	ctx->env[0].__jmpbuf[0].__sp = (int )((char )sptr + ssize) - sizeof (long);
		253	#elif defined (__GNU_LIBRARY__) && defined (__i386__)
		254	ctx->env[0].__jmpbuf[0].__pc = (char *)coro_init;
		255	ctx->env[0].__jmpbuf[0].__sp = (void )((char )sptr + ssize) - sizeof (long);
		256	#elif defined (__GNU_LIBRARY__) && defined (__amd64__)
		257	ctx->env[0].__jmpbuf[JB_PC] = (long)coro_init;
		258	ctx->env[0].__jmpbuf[0].__sp = (void )((char )sptr + ssize) - sizeof (long);
		259	#else
		260	#error "linux libc or architecture not supported"
		261	#endif
		262
		263	# elif CORO_IRIX
		264
		265	coro_setjmp (ctx->env, 0);
		266	ctx->env[JB_PC] = (__uint64_t)coro_init;
		267	ctx->env[JB_SP] = (__uint64_t)STACK_ADJUST_PTR (sptr, ssize) - sizeof (long);
		268
		269	# elif CORO_ASM
		270
		271	ctx->sp = (void *)(ssize + (char )sptr);
		272	--ctx->sp = (void )abort; /* needed for alignment only */
		273	--ctx->sp = (void )coro_init;
		274	ctx->sp -= NUM_SAVED;
		275
		276	# elif CORO_UCONTEXT
		277
		278	getcontext (&(ctx->uc));
		279
		280	ctx->uc.uc_link = 0;
		281	ctx->uc.uc_stack.ss_sp = sptr;
		282	ctx->uc.uc_stack.ss_size = (size_t)ssize;
		283	ctx->uc.uc_stack.ss_flags = 0;
		284
		285	makecontext (&(ctx->uc), (void (*)())coro_init, 0);
		286
		287	# endif
		288
		289	coro_transfer (create_coro, new_coro);
		290	}
		291
		292	/*****************************************************************************/
		293	/* pthread backend */
		294	/*****************************************************************************/
165	#if CORO_PTHREAD	295	#elif CORO_PTHREAD
166		296
		297	/* this mutex will be locked by the running coroutine */
		298	pthread_mutex_t coro_mutex = PTHREAD_MUTEX_INITIALIZER;
		299
167	struct coro_init_args {	300	struct coro_init_args
		301	{
168	coro_func func;	302	coro_func func;
169	void *arg;	303	void *arg;
170	coro_context self, main;	304	coro_context self, main;
171	};	305	};
172		306
173	pthread_mutex_t coro_mutex = PTHREAD_MUTEX_INITIALIZER;	307	static pthread_t null_tid;
		308
		309	/* I'd so love to cast pthread_mutex_unlock to void ()(void )... */
		310	static void
		311	mutex_unlock_wrapper (void *arg)
		312	{
		313	pthread_mutex_unlock ((pthread_mutex_t *)arg);
		314	}
174		315
175	static void *	316	static void *
176	trampoline (void *args_)	317	coro_init (void *args_)
177	{	318	{
178	struct coro_init_args args = (struct coro_init_args )args_;	319	struct coro_init_args args = (struct coro_init_args )args_;
179	coro_func func = args->func;	320	coro_func func = args->func;
180	void *arg = args->arg;	321	void *arg = args->arg;
181		322
182	pthread_mutex_lock (&coro_mutex);	323	pthread_mutex_lock (&coro_mutex);
183	pthread_cond_destroy (&args->self->c);	324
		325	/* we try to be good citizens and use deferred cancellation and cleanup handlers */
		326	pthread_cleanup_push (mutex_unlock_wrapper, &coro_mutex);
184	coro_transfer (args->self, args->main);	327	coro_transfer (args->self, args->main);
185	func (arg);	328	func (arg);
186	pthread_mutex_unlock (&coro_mutex);	329	pthread_cleanup_pop (1);
187		330
188	return 0;	331	return 0;
189	}	332	}
190		333
191	asm("");	334	void
192
193	void coro_transfer(coro_context prev, coro_context next)	335	coro_transfer (coro_context prev, coro_context next)
194	{	336	{
195	pthread_cond_init (&prev->c, 0);
196	pthread_cond_signal (&next->c);	337	pthread_cond_signal (&next->cv);
197	pthread_cond_wait (&prev->c, &coro_mutex);	338	pthread_cond_wait (&prev->cv, &coro_mutex);
198	pthread_cond_destroy (&prev->c);	339	#if __FreeBSD__ /* freebsd is of course broken and needs manual testcancel calls... yay... */
199	}	340	pthread_testcancel ();
200
201	#endif	341	#endif
		342	}
202		343
203	/* initialize a machine state */	344	void
204	void coro_create (coro_context *ctx,	345	coro_create (coro_context ctx, coro_func coro, void arg, void *sptr, long ssize)
205	coro_func coro, void *arg,
206	void *sptr, long ssize)
207	{	346	{
208	#if CORO_UCONTEXT
209
210	getcontext (&(ctx->uc));
211
212	ctx->uc.uc_link = 0;
213	ctx->uc.uc_stack.ss_sp = STACK_ADJUST_PTR (sptr,ssize);
214	ctx->uc.uc_stack.ss_size = (size_t)STACK_ADJUST_SIZE (sptr,ssize);
215	ctx->uc.uc_stack.ss_flags = 0;
216
217	makecontext (&(ctx->uc), (void (*)()) coro, 1, arg);
218
219	#elif CORO_SJLJ \|\| CORO_LOSER \|\| CORO_LINUX \|\| CORO_IRIX \|\| CORO_ASM
220
221	# if CORO_SJLJ
222	stack_t ostk, nstk;
223	struct sigaction osa, nsa;
224	sigset_t nsig, osig;
225	# endif
226	coro_context nctx;	347	static coro_context nctx;
227
228	coro_init_func = coro;
229	coro_init_arg = arg;
230
231	new_coro = ctx;
232	create_coro = &nctx;
233
234	# if CORO_SJLJ
235	/* we use SIGUSR2. first block it, then fiddle with it. */
236
237	sigemptyset (&nsig);
238	sigaddset (&nsig, SIGUSR2);
239	sigprocmask (SIG_BLOCK, &nsig, &osig);
240
241	nsa.sa_handler = trampoline;
242	sigemptyset (&nsa.sa_mask);
243	nsa.sa_flags = SA_ONSTACK;
244
245	if (sigaction (SIGUSR2, &nsa, &osa))
246	{
247	perror ("sigaction");
248	abort ();
249	}
250
251	/* set the new stack */
252	nstk.ss_sp = STACK_ADJUST_PTR (sptr,ssize); /* yes, some platforms (IRIX) get this wrong. */
253	nstk.ss_size = STACK_ADJUST_SIZE (sptr,ssize);
254	nstk.ss_flags = 0;
255
256	if (sigaltstack (&nstk, &ostk) < 0)
257	{
258	perror ("sigaltstack");
259	abort ();
260	}
261
262	trampoline_count = 0;
263	kill (getpid (), SIGUSR2);
264	sigfillset (&nsig); sigdelset (&nsig, SIGUSR2);
265
266	while (!trampoline_count)
267	sigsuspend (&nsig);
268
269	sigaltstack (0, &nstk);
270	nstk.ss_flags = SS_DISABLE;
271	if (sigaltstack (&nstk, 0) < 0)
272	perror ("sigaltstack");
273
274	sigaltstack (0, &nstk);
275	if (~nstk.ss_flags & SS_DISABLE)
276	abort ();
277
278	if (~ostk.ss_flags & SS_DISABLE)
279	sigaltstack (&ostk, 0);
280
281	sigaction (SIGUSR2, &osa, 0);
282
283	sigprocmask (SIG_SETMASK, &osig, 0);
284
285	# elif CORO_LOSER
286
287	setjmp (ctx->env);
288	#if __CYGWIN__
289	ctx->env[7] = (long)((char *)sptr + ssize) - sizeof (long);
290	ctx->env[8] = (long)coro_init;
291	#elif defined(_M_IX86)
292	((_JUMP_BUFFER *)&ctx->env)->Eip = (long)coro_init;
293	((_JUMP_BUFFER *)&ctx->env)->Esp = (long)STACK_ADJUST_PTR (sptr, ssize) - sizeof (long);
294	#elif defined(_M_AMD64)
295	((_JUMP_BUFFER *)&ctx->env)->Rip = (__int64)coro_init;
296	((_JUMP_BUFFER *)&ctx->env)->Rsp = (__int64)STACK_ADJUST_PTR (sptr, ssize) - sizeof (long);
297	#elif defined(_M_IA64)
298	((_JUMP_BUFFER *)&ctx->env)->StIIP = (__int64)coro_init;
299	((_JUMP_BUFFER *)&ctx->env)->IntSp = (__int64)STACK_ADJUST_PTR (sptr, ssize) - sizeof (long);
300	#else
301	# error "microsoft libc or architecture not supported"
302	#endif
303
304	# elif CORO_LINUX
305
306	_setjmp (ctx->env);
307	#if __GLIBC__ >= 2 && __GLIBC_MINOR__ >= 0 && defined (JB_PC) && defined (JB_SP)
308	ctx->env[0].__jmpbuf[JB_PC] = (long)coro_init;
309	ctx->env[0].__jmpbuf[JB_SP] = (long)STACK_ADJUST_PTR (sptr, ssize) - sizeof (long);
310	#elif __GLIBC__ >= 2 && __GLIBC_MINOR__ >= 0 && defined (__mc68000__)
311	ctx->env[0].__jmpbuf[0].__aregs[0] = (long int)coro_init;
312	ctx->env[0].__jmpbuf[0].__sp = (int )((char )sptr + ssize) - sizeof (long);
313	#elif defined (__GNU_LIBRARY__) && defined (__i386__)
314	ctx->env[0].__jmpbuf[0].__pc = (char *)coro_init;
315	ctx->env[0].__jmpbuf[0].__sp = (void )((char )sptr + ssize) - sizeof (long);
316	#elif defined (__GNU_LIBRARY__) && defined (__amd64__)
317	ctx->env[0].__jmpbuf[JB_PC] = (long)coro_init;
318	ctx->env[0].__jmpbuf[0].__sp = (void )((char )sptr + ssize) - sizeof (long);
319	#else
320	# error "linux libc or architecture not supported"
321	#endif
322
323	# elif CORO_IRIX
324
325	setjmp (ctx->env);
326	ctx->env[JB_PC] = (__uint64_t)coro_init;
327	ctx->env[JB_SP] = (__uint64_t)STACK_ADJUST_PTR (sptr, ssize) - sizeof (long);
328
329	# elif CORO_ASM
330
331	ctx->sp = (volatile void *)(ssize + (char )sptr);
332	--ctx->sp = (void )abort; /* needed for alignment only */
333	--ctx->sp = (void )coro_init;
334	ctx->sp -= NUM_SAVED;
335
336	# endif
337
338	coro_transfer ((coro_context )create_coro, (coro_context )new_coro);
339
340	# elif CORO_PTHREAD
341
342	pthread_t id;
343	pthread_attr_t attr;
344	coro_context nctx;
345	struct coro_init_args args;
346	static int once;	348	static int once;
347		349
348	if (!once)	350	if (!once)
349	{	351	{
		352	once = 1;
		353
350	pthread_mutex_lock (&coro_mutex);	354	pthread_mutex_lock (&coro_mutex);
351	once = 1;	355	pthread_cond_init (&nctx.cv, 0);
		356	null_tid = pthread_self ();
		357	}
		358
		359	pthread_cond_init (&ctx->cv, 0);
		360
		361	if (coro)
352	}	362	{
		363	pthread_attr_t attr;
		364	struct coro_init_args args;
353		365
354	args.func = coro;	366	args.func = coro;
355	args.arg = arg;	367	args.arg = arg;
356	args.self = ctx;	368	args.self = ctx;
357	args.main = &nctx;	369	args.main = &nctx;
358		370
359	pthread_attr_init (&attr);	371	pthread_attr_init (&attr);
360	pthread_attr_setdetachstate (&attr, PTHREAD_CREATE_DETACHED);
361	pthread_attr_setstack (&attr, sptr, (size_t)ssize);	372	pthread_attr_setstack (&attr, sptr, (size_t)ssize);
		373	pthread_attr_setscope (&attr, PTHREAD_SCOPE_PROCESS);
362	pthread_create (&id, &attr, trampoline, &args);	374	pthread_create (&ctx->id, &attr, coro_init, &args);
363		375
364	pthread_cond_init (&args.self->c, 0);
365	coro_transfer (args.main, args.self);	376	coro_transfer (args.main, args.self);
		377	}
		378	else
		379	ctx->id = null_tid;
		380	}
		381
		382	void
		383	coro_destroy (coro_context *ctx)
		384	{
		385	if (!pthread_equal (ctx->id, null_tid))
		386	{
		387	pthread_cancel (ctx->id);
		388	pthread_mutex_unlock (&coro_mutex);
		389	pthread_join (ctx->id, 0);
		390	pthread_mutex_lock (&coro_mutex);
		391	}
		392
		393	pthread_cond_destroy (&ctx->cv);
		394	}
366		395
367	#else	396	#else
368	# error unsupported backend	397	# error unsupported backend
369	#endif	398	#endif
370	}
371		399

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Comparing libcoro/coro.c (file contents): Revision 1.37 by root, Fri Nov 7 16:39:35 2008 UTC vs. Revision 1.44 by root, Wed Nov 19 02:56:16 2008 UTC

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Comparing libcoro/coro.c (file contents):
Revision 1.37 by root, Fri Nov 7 16:39:35 2008 UTC vs.
Revision 1.44 by root, Wed Nov 19 02:56:16 2008 UTC