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

Comparing libcoro/coro.c (file contents):
Revision 1.31 by root, Thu Apr 24 12:40:38 2008 UTC vs.
Revision 1.39 by root, Sat Nov 8 04:31:28 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 volatile coro_func coro_init_func;
75	static volatile void *coro_init_arg;	80	static volatile void *coro_init_arg;
76	static volatile coro_context new_coro, create_coro;	81	static volatile coro_context new_coro, create_coro;
77		82
78	/* what we really want to detect here is wether we use a new-enough version of GAS */	83	/* 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 */	84	/* with dwarf debug info. instead, check for gcc 3, ELF and GNU/Linux and hope for the best */
80	#if __GNUC__ >= 3 && __ELF__ && __linux__	85	# if __GNUC__ >= 3 && __ELF__ && __linux__
81	# define HAVE_CFI 1	86	# define HAVE_CFI 1
82	#endif	87	# endif
83		88
84	static void	89	static void
85	coro_init (void)	90	coro_init (void)
86	{	91	{
87	volatile coro_func func = coro_init_func;	92	volatile coro_func func = coro_init_func;
…		…
95	abort ();	100	abort ();
96	}	101	}
97		102
98	# if CORO_SJLJ	103	# if CORO_SJLJ
99		104
100	static volatile int trampoline_count;	105	static volatile int trampoline_done;
101		106
102	/* trampoline signal handler */	107	/* trampoline signal handler */
103	static void	108	static void
104	trampoline (int sig)	109	trampoline (int sig)
105	{	110	{
106	if (setjmp (((coro_context *)new_coro)->env))	111	if (
		112	#if _XOPEN_UNIX > 0
		113	_setjmp (new_coro->env)
		114	#else
		115	setjmp (new_coro->env)
		116	#endif
		117	) {
		118	#if HAVE_CFI
		119	asm (".cfi_startproc");
		120	#endif
		121	coro_init (); /* start it */
		122	#if HAVE_CFI
		123	asm (".cfi_endproc");
		124	#endif
		125	}
		126	else
		127	trampoline_done = 1;
		128	}
		129
		130	# endif
		131
		132	# if CORO_ASM
		133
		134	asm (
		135	".text\n"
		136	".globl coro_transfer\n"
		137	".type coro_transfer, @function\n"
		138	"coro_transfer:\n"
		139	#if __amd64
		140	#define NUM_SAVED 6
		141	"\tpush %rbp\n"
		142	"\tpush %rbx\n"
		143	"\tpush %r12\n"
		144	"\tpush %r13\n"
		145	"\tpush %r14\n"
		146	"\tpush %r15\n"
		147	"\tmov %rsp, (%rdi)\n"
		148	"\tmov (%rsi), %rsp\n"
		149	"\tpop %r15\n"
		150	"\tpop %r14\n"
		151	"\tpop %r13\n"
		152	"\tpop %r12\n"
		153	"\tpop %rbx\n"
		154	"\tpop %rbp\n"
		155	#elif __i386
		156	#define NUM_SAVED 4
		157	"\tpush %ebp\n"
		158	"\tpush %ebx\n"
		159	"\tpush %esi\n"
		160	"\tpush %edi\n"
		161	"\tmov %esp, (%eax)\n"
		162	"\tmov (%edx), %esp\n"
		163	"\tpop %edi\n"
		164	"\tpop %esi\n"
		165	"\tpop %ebx\n"
		166	"\tpop %ebp\n"
		167	#else
		168	#error unsupported architecture
		169	#endif
		170	"\tret\n"
		171	);
		172
		173	# endif
		174
		175	void
		176	coro_create (coro_context ctx, coro_func coro, void arg, void *sptr, long ssize)
		177	{
		178	coro_context nctx;
		179	# if CORO_SJLJ
		180	stack_t ostk, nstk;
		181	struct sigaction osa, nsa;
		182	sigset_t nsig, osig;
		183	# endif
		184
		185	if (!coro)
		186	return;
		187
		188	coro_init_func = coro;
		189	coro_init_arg = arg;
		190
		191	new_coro = ctx;
		192	create_coro = &nctx;
		193
		194	# if CORO_SJLJ
		195	/* we use SIGUSR2. first block it, then fiddle with it. */
		196
		197	sigemptyset (&nsig);
		198	sigaddset (&nsig, SIGUSR2);
		199	sigprocmask (SIG_BLOCK, &nsig, &osig);
		200
		201	nsa.sa_handler = trampoline;
		202	sigemptyset (&nsa.sa_mask);
		203	nsa.sa_flags = SA_ONSTACK;
		204
		205	if (sigaction (SIGUSR2, &nsa, &osa))
107	{	206	{
108	#if HAVE_CFI	207	perror ("sigaction");
109	asm (".cfi_startproc");	208	abort ();
		209	}
		210
		211	/* set the new stack */
		212	nstk.ss_sp = STACK_ADJUST_PTR (sptr,ssize); /* yes, some platforms (IRIX) get this wrong. */
		213	nstk.ss_size = STACK_ADJUST_SIZE (sptr,ssize);
		214	nstk.ss_flags = 0;
		215
		216	if (sigaltstack (&nstk, &ostk) < 0)
		217	{
		218	perror ("sigaltstack");
		219	abort ();
		220	}
		221
		222	trampoline_done = 0;
		223	kill (getpid (), SIGUSR2);
		224	sigfillset (&nsig); sigdelset (&nsig, SIGUSR2);
		225
		226	while (!trampoline_done)
		227	sigsuspend (&nsig);
		228
		229	sigaltstack (0, &nstk);
		230	nstk.ss_flags = SS_DISABLE;
		231	if (sigaltstack (&nstk, 0) < 0)
		232	perror ("sigaltstack");
		233
		234	sigaltstack (0, &nstk);
		235	if (~nstk.ss_flags & SS_DISABLE)
		236	abort ();
		237
		238	if (~ostk.ss_flags & SS_DISABLE)
		239	sigaltstack (&ostk, 0);
		240
		241	sigaction (SIGUSR2, &osa, 0);
		242	sigprocmask (SIG_SETMASK, &osig, 0);
		243
		244	# elif CORO_LOSER
		245
		246	setjmp (ctx->env);
		247	#if __CYGWIN__
		248	ctx->env[7] = (long)((char *)sptr + ssize) - sizeof (long);
		249	ctx->env[8] = (long)coro_init;
		250	#elif defined(_M_IX86)
		251	((_JUMP_BUFFER *)&ctx->env)->Eip = (long)coro_init;
		252	((_JUMP_BUFFER *)&ctx->env)->Esp = (long)STACK_ADJUST_PTR (sptr, ssize) - sizeof (long);
		253	#elif defined(_M_AMD64)
		254	((_JUMP_BUFFER *)&ctx->env)->Rip = (__int64)coro_init;
		255	((_JUMP_BUFFER *)&ctx->env)->Rsp = (__int64)STACK_ADJUST_PTR (sptr, ssize) - sizeof (long);
		256	#elif defined(_M_IA64)
		257	((_JUMP_BUFFER *)&ctx->env)->StIIP = (__int64)coro_init;
		258	((_JUMP_BUFFER *)&ctx->env)->IntSp = (__int64)STACK_ADJUST_PTR (sptr, ssize) - sizeof (long);
		259	#else
		260	#error "microsoft libc or architecture not supported"
		261	#endif
		262
		263	# elif CORO_LINUX
		264
		265	_setjmp (ctx->env);
		266	#if __GLIBC__ >= 2 && __GLIBC_MINOR__ >= 0 && defined (JB_PC) && defined (JB_SP)
		267	ctx->env[0].__jmpbuf[JB_PC] = (long)coro_init;
		268	ctx->env[0].__jmpbuf[JB_SP] = (long)STACK_ADJUST_PTR (sptr, ssize) - sizeof (long);
		269	#elif __GLIBC__ >= 2 && __GLIBC_MINOR__ >= 0 && defined (__mc68000__)
		270	ctx->env[0].__jmpbuf[0].__aregs[0] = (long int)coro_init;
		271	ctx->env[0].__jmpbuf[0].__sp = (int )((char )sptr + ssize) - sizeof (long);
		272	#elif defined (__GNU_LIBRARY__) && defined (__i386__)
		273	ctx->env[0].__jmpbuf[0].__pc = (char *)coro_init;
		274	ctx->env[0].__jmpbuf[0].__sp = (void )((char )sptr + ssize) - sizeof (long);
		275	#elif defined (__GNU_LIBRARY__) && defined (__amd64__)
		276	ctx->env[0].__jmpbuf[JB_PC] = (long)coro_init;
		277	ctx->env[0].__jmpbuf[0].__sp = (void )((char )sptr + ssize) - sizeof (long);
		278	#else
		279	#error "linux libc or architecture not supported"
		280	#endif
		281
		282	# elif CORO_IRIX
		283
		284	setjmp (ctx->env);
		285	ctx->env[JB_PC] = (__uint64_t)coro_init;
		286	ctx->env[JB_SP] = (__uint64_t)STACK_ADJUST_PTR (sptr, ssize) - sizeof (long);
		287
		288	# elif CORO_ASM
		289
		290	ctx->sp = (volatile void *)(ssize + (char )sptr);
		291	--ctx->sp = (void )abort; /* needed for alignment only */
		292	--ctx->sp = (void )coro_init;
		293	ctx->sp -= NUM_SAVED;
		294
		295	# elif CORO_UCONTEXT
		296
		297	getcontext (&(ctx->uc));
		298
		299	ctx->uc.uc_link = 0;
		300	ctx->uc.uc_stack.ss_sp = sptr;
		301	ctx->uc.uc_stack.ss_size = (size_t)ssize;
		302	ctx->uc.uc_stack.ss_flags = 0;
		303
		304	makecontext (&(ctx->uc), (void (*)())coro_init, 0);
		305
		306	# endif
		307
		308	coro_transfer (create_coro, new_coro);
		309	}
		310
110	#endif	311	#endif
111	coro_init (); /* start it */
112	#if HAVE_CFI
113	asm (".cfi_endproc");
114	#endif
115	}
116	else
117	trampoline_count++;
118	}
119		312
120	# endif	313	/*****************************************************************************/
121		314	/* pthread backend */
122	#endif	315	/*****************************************************************************/
123
124	#if CORO_ASM
125	void __attribute__((__noinline__, __fastcall__))
126	coro_transfer (struct coro_context prev, struct coro_context next)
127	{
128	asm volatile (
129	#if __amd64
130	# define NUM_CLOBBERED 5
131	"push %%rbx\n\t"
132	"push %%r12\n\t"
133	"push %%r13\n\t"
134	"push %%r14\n\t"
135	"push %%r15\n\t"
136	"mov %%rsp, %0\n\t"
137	"mov %1, %%rsp\n\t"
138	"pop %%r15\n\t"
139	"pop %%r14\n\t"
140	"pop %%r13\n\t"
141	"pop %%r12\n\t"
142	"pop %%rbx\n\t"
143	#elif __i386
144	# define NUM_CLOBBERED 4
145	"push %%ebx\n\t"
146	"push %%esi\n\t"
147	"push %%edi\n\t"
148	"push %%ebp\n\t"
149	"mov %%esp, %0\n\t"
150	"mov %1, %%esp\n\t"
151	"pop %%ebp\n\t"
152	"pop %%edi\n\t"
153	"pop %%esi\n\t"
154	"pop %%ebx\n\t"
155	#else
156	# error unsupported architecture
157	#endif
158	: "=m" (prev->sp)
159	: "m" (next->sp)
160	);
161	}
162	#endif
163		316
164	#if CORO_PTHREAD	317	#if CORO_PTHREAD
165		318
		319	/* this mutex will be locked by the running coroutine */
		320	pthread_mutex_t coro_mutex = PTHREAD_MUTEX_INITIALIZER;
		321
166	struct coro_init_args {	322	struct coro_init_args
		323	{
167	coro_func func;	324	coro_func func;
168	void *arg;	325	void *arg;
169	coro_context self, main;	326	coro_context self, main;
170	};	327	};
171		328
172	pthread_mutex_t coro_mutex = PTHREAD_MUTEX_INITIALIZER;	329	static pthread_t null_tid;
		330
		331	/* I'd so love to cast pthread_mutex_unlock to void ()(void )... */
		332	static void
		333	mutex_unlock_wrapper (void *arg)
		334	{
		335	pthread_mutex_unlock ((pthread_mutex_t *)arg);
		336	}
173		337
174	static void *	338	static void *
175	trampoline (void *args_)	339	coro_init (void *args_)
176	{	340	{
177	struct coro_init_args args = (struct coro_init_args )args_;	341	struct coro_init_args args = (struct coro_init_args )args_;
178	coro_func func = args->func;	342	coro_func func = args->func;
179	void *arg = args->arg;	343	void *arg = args->arg;
180		344
181	pthread_mutex_lock (&coro_mutex);	345	pthread_mutex_lock (&coro_mutex);
182	pthread_cond_destroy (&args->self->c);	346
		347	/* we try to be good citizens and use deferred cancellation and cleanup handlers */
		348	pthread_cleanup_push (mutex_unlock_wrapper, &coro_mutex);
183	coro_transfer (args->self, args->main);	349	coro_transfer (args->self, args->main);
184	func (arg);	350	func (arg);
185	pthread_mutex_unlock (&coro_mutex);	351	pthread_cleanup_pop (1);
186		352
187	return 0;	353	return 0;
188	}	354	}
189		355
		356	void
190	void coro_transfer(coro_context prev, coro_context next)	357	coro_transfer (coro_context prev, coro_context next)
191	{	358	{
192	pthread_cond_init (&prev->c, 0);
193	pthread_cond_signal (&next->c);	359	pthread_cond_signal (&next->cv);
194	pthread_cond_wait (&prev->c, &coro_mutex);	360	pthread_cond_wait (&prev->cv, &coro_mutex);
195	pthread_cond_destroy (&prev->c);
196	}	361	}
197		362
198	#endif	363	void
199		364	coro_create (coro_context ctx, coro_func coro, void arg, void *sptr, long ssize)
200	/* initialize a machine state */
201	void coro_create (coro_context *ctx,
202	coro_func coro, void *arg,
203	void *sptr, long ssize)
204	{	365	{
205	#if CORO_UCONTEXT
206
207	getcontext (&(ctx->uc));
208
209	ctx->uc.uc_link = 0;
210	ctx->uc.uc_stack.ss_sp = STACK_ADJUST_PTR (sptr,ssize);
211	ctx->uc.uc_stack.ss_size = (size_t) STACK_ADJUST_SIZE (sptr,ssize);
212	ctx->uc.uc_stack.ss_flags = 0;
213
214	makecontext (&(ctx->uc), (void (*)()) coro, 1, arg);
215
216	#elif CORO_SJLJ \|\| CORO_LOSER \|\| CORO_LINUX \|\| CORO_IRIX \|\| CORO_ASM
217
218	# if CORO_SJLJ
219	stack_t ostk, nstk;
220	struct sigaction osa, nsa;
221	sigset_t nsig, osig;
222	# endif
223	coro_context nctx;	366	static coro_context nctx;
224
225	coro_init_func = coro;
226	coro_init_arg = arg;
227
228	new_coro = ctx;
229	create_coro = &nctx;
230
231	# if CORO_SJLJ
232	/* we use SIGUSR2. first block it, then fiddle with it. */
233
234	sigemptyset (&nsig);
235	sigaddset (&nsig, SIGUSR2);
236	sigprocmask (SIG_BLOCK, &nsig, &osig);
237
238	nsa.sa_handler = trampoline;
239	sigemptyset (&nsa.sa_mask);
240	nsa.sa_flags = SA_ONSTACK;
241
242	if (sigaction (SIGUSR2, &nsa, &osa))
243	{
244	perror ("sigaction");
245	abort ();
246	}
247
248	/* set the new stack */
249	nstk.ss_sp = STACK_ADJUST_PTR (sptr,ssize); /* yes, some platforms (IRIX) get this wrong. */
250	nstk.ss_size = STACK_ADJUST_SIZE (sptr,ssize);
251	nstk.ss_flags = 0;
252
253	if (sigaltstack (&nstk, &ostk) < 0)
254	{
255	perror ("sigaltstack");
256	abort ();
257	}
258
259	trampoline_count = 0;
260	kill (getpid (), SIGUSR2);
261	sigfillset (&nsig); sigdelset (&nsig, SIGUSR2);
262
263	while (!trampoline_count)
264	sigsuspend (&nsig);
265
266	sigaltstack (0, &nstk);
267	nstk.ss_flags = SS_DISABLE;
268	if (sigaltstack (&nstk, 0) < 0)
269	perror ("sigaltstack");
270
271	sigaltstack (0, &nstk);
272	if (~nstk.ss_flags & SS_DISABLE)
273	abort ();
274
275	if (~ostk.ss_flags & SS_DISABLE)
276	sigaltstack (&ostk, 0);
277
278	sigaction (SIGUSR2, &osa, 0);
279
280	sigprocmask (SIG_SETMASK, &osig, 0);
281
282	# elif CORO_LOSER
283
284	setjmp (ctx->env);
285	#if __CYGWIN__
286	ctx->env[7] = (long)((char *)sptr + ssize);
287	ctx->env[8] = (long)coro_init;
288	#elif defined(_M_IX86)
289	((_JUMP_BUFFER *)&ctx->env)->Eip = (long)coro_init;
290	((_JUMP_BUFFER *)&ctx->env)->Esp = (long)STACK_ADJUST_PTR (sptr, ssize);
291	#elif defined(_M_AMD64)
292	((_JUMP_BUFFER *)&ctx->env)->Rip = (__int64)coro_init;
293	((_JUMP_BUFFER *)&ctx->env)->Rsp = (__int64)STACK_ADJUST_PTR (sptr, ssize);
294	#elif defined(_M_IA64)
295	((_JUMP_BUFFER *)&ctx->env)->StIIP = (__int64)coro_init;
296	((_JUMP_BUFFER *)&ctx->env)->IntSp = (__int64)STACK_ADJUST_PTR (sptr, ssize);
297	#else
298	# error "microsoft libc or architecture not supported"
299	#endif
300
301	# elif CORO_LINUX
302
303	_setjmp (ctx->env);
304	#if __GLIBC__ >= 2 && __GLIBC_MINOR__ >= 0 && defined (JB_PC) && defined (JB_SP)
305	ctx->env[0].__jmpbuf[JB_PC] = (long)coro_init;
306	ctx->env[0].__jmpbuf[JB_SP] = (long)STACK_ADJUST_PTR (sptr, ssize);
307	#elif __GLIBC__ >= 2 && __GLIBC_MINOR__ >= 0 && defined (__mc68000__)
308	ctx->env[0].__jmpbuf[0].__aregs[0] = (long int)coro_init;
309	ctx->env[0].__jmpbuf[0].__sp = (int )((char )sptr + ssize);
310	#elif defined (__GNU_LIBRARY__) && defined (__i386__)
311	ctx->env[0].__jmpbuf[0].__pc = (char *)coro_init;
312	ctx->env[0].__jmpbuf[0].__sp = (void )((char )sptr + ssize);
313	#elif defined (__GNU_LIBRARY__) && defined (__amd64__)
314	ctx->env[0].__jmpbuf[JB_PC] = (long)coro_init;
315	ctx->env[0].__jmpbuf[JB_RSP] = (long)STACK_ADJUST_PTR (sptr, ssize);
316	#else
317	# error "linux libc or architecture not supported"
318	#endif
319
320	# elif CORO_IRIX
321
322	setjmp (ctx->env);
323	ctx->env[JB_PC] = (__uint64_t)coro_init;
324	ctx->env[JB_SP] = (__uint64_t)STACK_ADJUST_PTR (sptr, ssize);
325
326	# elif CORO_ASM
327
328	ctx->sp = (volatile void *)(ssize + (char )sptr);
329	--ctx->sp = (void )coro_init;
330	--ctx->sp = (void )coro_init; // this is needed when the prologue saves ebp
331	ctx->sp -= NUM_CLOBBERED;
332
333	# endif
334
335	coro_transfer ((coro_context )create_coro, (coro_context )new_coro);
336
337	# elif CORO_PTHREAD
338
339	pthread_t id;
340	pthread_attr_t attr;
341	coro_context nctx;
342	struct coro_init_args args;
343	static int once;	367	static int once;
344		368
345	if (!once)	369	if (!once)
346	{	370	{
		371	once = 1;
		372
347	pthread_mutex_lock (&coro_mutex);	373	pthread_mutex_lock (&coro_mutex);
348	once = 1;	374	pthread_cond_init (&nctx.cv, 0);
		375	null_tid = pthread_self ();
		376	}
		377
		378	pthread_cond_init (&ctx->cv, 0);
		379
		380	if (coro)
349	}	381	{
		382	pthread_attr_t attr;
		383	struct coro_init_args args;
350		384
351	args.func = coro;	385	args.func = coro;
352	args.arg = arg;	386	args.arg = arg;
353	args.self = ctx;	387	args.self = ctx;
354	args.main = &nctx;	388	args.main = &nctx;
355		389
356	pthread_attr_init (&attr);	390	pthread_attr_init (&attr);
357	pthread_attr_setdetachstate (&attr, PTHREAD_CREATE_DETACHED);
358	pthread_attr_setstack (&attr, sptr, (size_t)ssize);	391	pthread_attr_setstack (&attr, sptr, (size_t)ssize);
		392	pthread_attr_setscope (&attr, PTHREAD_SCOPE_PROCESS);
359	pthread_create (&id, &attr, trampoline, &args);	393	pthread_create (&ctx->id, &attr, coro_init, &args);
360		394
361	pthread_cond_init (&args.self->c, 0);
362	coro_transfer (args.main, args.self);	395	coro_transfer (args.main, args.self);
		396	}
		397	else
		398	ctx->id = null_tid;
		399	}
363		400
364	#else	401	void
365	# error unsupported backend	402	coro_destroy (coro_context *ctx)
		403	{
		404	if (!pthread_equal (ctx->id, null_tid))
		405	{
		406	pthread_cancel (ctx->id);
		407	pthread_mutex_unlock (&coro_mutex);
		408	pthread_join (ctx->id, 0);
		409	pthread_mutex_lock (&coro_mutex);
		410	}
		411
		412	pthread_cond_destroy (&ctx->cv);
		413	}
		414
366	#endif	415	#endif
367	}
368		416

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Comparing libcoro/coro.c (file contents): Revision 1.31 by root, Thu Apr 24 12:40:38 2008 UTC vs. Revision 1.39 by root, Sat Nov 8 04:31:28 2008 UTC

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Comparing libcoro/coro.c (file contents):
Revision 1.31 by root, Thu Apr 24 12:40:38 2008 UTC vs.
Revision 1.39 by root, Sat Nov 8 04:31:28 2008 UTC