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

Comparing libcoro/coro.c (file contents):
Revision 1.65 by root, Wed Dec 5 13:10:21 2012 UTC vs.
Revision 1.68 by root, Sun Mar 6 06:26:21 2016 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 <stddef.h>
43	#include <string.h>	44	#include <string.h>
44		45
45	/*****************************************************************************/	46	/*****************************************************************************/
46	/* ucontext/setjmp/asm backends */	47	/* ucontext/setjmp/asm backends */
47	/*****************************************************************************/	48	/*****************************************************************************/
…		…
113	}	114	}
114		115
115	# endif	116	# endif
116		117
117	# if CORO_ASM	118	# if CORO_ASM
		119
		120	#if __arm__ && \
		121	(defined __ARM_ARCH_7__ \|\| defined __ARM_ARCH_7A__ \
		122	\|\| defined __ARM_ARCH_7R__ \|\| defined __ARM_ARCH_7M__ \
		123	\|\| __ARCH_ARCH == 7)
		124	#define CORO_ARM 1
		125	#endif
118		126
119	#if _WIN32 \|\| __CYGWIN__	127	#if _WIN32 \|\| __CYGWIN__
120	#define CORO_WIN_TIB 1	128	#define CORO_WIN_TIB 1
121	#endif	129	#endif
122		130
…		…
203	"\tpopq %rbp\n"	211	"\tpopq %rbp\n"
204	#endif	212	#endif
205	"\tpopq %rcx\n"	213	"\tpopq %rcx\n"
206	"\tjmpq *%rcx\n"	214	"\tjmpq *%rcx\n"
207		215
208	#elif __i386	216	#elif __i386__
209		217
210	#define NUM_SAVED 4	218	#define NUM_SAVED 4
211	"\tpushl %ebp\n"	219	"\tpushl %ebp\n"
212	"\tpushl %ebx\n"	220	"\tpushl %ebx\n"
213	"\tpushl %esi\n"	221	"\tpushl %esi\n"
…		…
231	"\tpopl %ebx\n"	239	"\tpopl %ebx\n"
232	"\tpopl %ebp\n"	240	"\tpopl %ebp\n"
233	"\tpopl %ecx\n"	241	"\tpopl %ecx\n"
234	"\tjmpl *%ecx\n"	242	"\tjmpl *%ecx\n"
235		243
		244	#elif CORO_ARM /* untested, what about thumb, neon, iwmmxt? */
		245
		246	#if __ARM_PCS_VFP
		247	"\tvpush {d8-d15}\n"
		248	#define NUM_SAVED (9 + 8 * 2)
		249	#else
		250	#define NUM_SAVED 9
		251	#endif
		252	"\tpush {r4-r11,lr}\n"
		253	"\tstr sp, [r0]\n"
		254	"\tldr sp, [r1]\n"
		255	"\tpop {r4-r11,lr}\n"
		256	#if __ARM_PCS_VFP
		257	"\tvpop {d8-d15}\n"
		258	#endif
		259	"\tmov r15, lr\n"
		260
		261	#elif __mips__ && 0 /* untested, 32 bit only */
		262
		263	#define NUM_SAVED (12 + 8 * 2)
		264	/* TODO: n64/o64, lw=>ld */
		265
		266	"\t.set nomips16\n"
		267	"\t.frame $sp,112,$31\n"
		268	#if __mips_soft_float
		269	"\taddiu $sp,$sp,-44\n"
		270	#else
		271	"\taddiu $sp,$sp,-112\n"
		272	"\ts.d $f30,88($sp)\n"
		273	"\ts.d $f28,80($sp)\n"
		274	"\ts.d $f26,72($sp)\n"
		275	"\ts.d $f24,64($sp)\n"
		276	"\ts.d $f22,56($sp)\n"
		277	"\ts.d $f20,48($sp)\n"
		278	#endif
		279	"\tsw $28,40($sp)\n"
		280	"\tsw $31,36($sp)\n"
		281	"\tsw $fp,32($sp)\n"
		282	"\tsw $23,28($sp)\n"
		283	"\tsw $22,24($sp)\n"
		284	"\tsw $21,20($sp)\n"
		285	"\tsw $20,16($sp)\n"
		286	"\tsw $19,12($sp)\n"
		287	"\tsw $18,8($sp)\n"
		288	"\tsw $17,4($sp)\n"
		289	"\tsw $16,0($sp)\n"
		290	"\tsw $sp,0($4)\n"
		291	"\tlw $sp,0($5)\n"
		292	#if !__mips_soft_float
		293	"\tl.d $f30,88($sp)\n"
		294	"\tl.d $f28,80($sp)\n"
		295	"\tl.d $f26,72($sp)\n"
		296	"\tl.d $f24,64($sp)\n"
		297	"\tl.d $f22,56($sp)\n"
		298	"\tl.d $f20,48($sp)\n"
		299	#endif
		300	"\tlw $28,40($sp)\n"
		301	"\tlw $31,36($sp)\n"
		302	"\tlw $fp,32($sp)\n"
		303	"\tlw $23,28($sp)\n"
		304	"\tlw $22,24($sp)\n"
		305	"\tlw $21,20($sp)\n"
		306	"\tlw $20,16($sp)\n"
		307	"\tlw $19,12($sp)\n"
		308	"\tlw $18,8($sp)\n"
		309	"\tlw $17,4($sp)\n"
		310	"\tlw $16,0($sp)\n"
		311	"\tj $31\n"
		312	#if __mips_soft_float
		313	"\taddiu $sp,$sp,44\n"
		314	#else
		315	"\taddiu $sp,$sp,112\n"
		316	#endif
		317
236	#else	318	#else
237	#error unsupported architecture	319	#error unsupported architecture
238	#endif	320	#endif
239	);	321	);
240		322
241	# endif	323	# endif
242		324
243	void	325	void
244	coro_create (coro_context ctx, coro_func coro, void arg, void *sptr, long ssize)	326	coro_create (coro_context ctx, coro_func coro, void arg, void *sptr, size_t ssize)
245	{	327	{
246	coro_context nctx;	328	coro_context nctx;
247	# if CORO_SJLJ	329	# if CORO_SJLJ
248	stack_t ostk, nstk;	330	stack_t ostk, nstk;
249	struct sigaction osa, nsa;	331	struct sigaction osa, nsa;
…		…
310	sigprocmask (SIG_SETMASK, &osig, 0);	392	sigprocmask (SIG_SETMASK, &osig, 0);
311		393
312	# elif CORO_LOSER	394	# elif CORO_LOSER
313		395
314	coro_setjmp (ctx->env);	396	coro_setjmp (ctx->env);
315	#if __CYGWIN__ && __i386	397	#if __CYGWIN__ && __i386__
316	ctx->env[8] = (long) coro_init;	398	ctx->env[8] = (long) coro_init;
317	ctx->env[7] = (long) ((char *)sptr + ssize) - sizeof (long);	399	ctx->env[7] = (long) ((char *)sptr + ssize) - sizeof (long);
318	#elif __CYGWIN__ && __x86_64	400	#elif __CYGWIN__ && __x86_64__
319	ctx->env[7] = (long) coro_init;	401	ctx->env[7] = (long) coro_init;
320	ctx->env[6] = (long) ((char *)sptr + ssize) - sizeof (long);	402	ctx->env[6] = (long) ((char *)sptr + ssize) - sizeof (long);
321	#elif defined __MINGW32__	403	#elif defined __MINGW32__
322	ctx->env[5] = (long) coro_init;	404	ctx->env[5] = (long) coro_init;
323	ctx->env[4] = (long) ((char *)sptr + ssize) - sizeof (long);	405	ctx->env[4] = (long) ((char *)sptr + ssize) - sizeof (long);
…		…
344	ctx->env[0].__jmpbuf[0].__aregs[0] = (long int)coro_init;	426	ctx->env[0].__jmpbuf[0].__aregs[0] = (long int)coro_init;
345	ctx->env[0].__jmpbuf[0].__sp = (int ) ((char )sptr + ssize) - sizeof (long);	427	ctx->env[0].__jmpbuf[0].__sp = (int ) ((char )sptr + ssize) - sizeof (long);
346	#elif defined (__GNU_LIBRARY__) && defined (__i386__)	428	#elif defined (__GNU_LIBRARY__) && defined (__i386__)
347	ctx->env[0].__jmpbuf[0].__pc = (char *) coro_init;	429	ctx->env[0].__jmpbuf[0].__pc = (char *) coro_init;
348	ctx->env[0].__jmpbuf[0].__sp = (void ) ((char )sptr + ssize) - sizeof (long);	430	ctx->env[0].__jmpbuf[0].__sp = (void ) ((char )sptr + ssize) - sizeof (long);
349	#elif defined (__GNU_LIBRARY__) && defined (__amd64__)	431	#elif defined (__GNU_LIBRARY__) && defined (__x86_64__)
350	ctx->env[0].__jmpbuf[JB_PC] = (long) coro_init;	432	ctx->env[0].__jmpbuf[JB_PC] = (long) coro_init;
351	ctx->env[0].__jmpbuf[0].__sp = (void ) ((char )sptr + ssize) - sizeof (long);	433	ctx->env[0].__jmpbuf[0].__sp = (void ) ((char )sptr + ssize) - sizeof (long);
352	#else	434	#else
353	#error "linux libc or architecture not supported"	435	#error "linux libc or architecture not supported"
354	#endif	436	#endif
…		…
359	ctx->env[JB_PC] = (__uint64_t)coro_init;	441	ctx->env[JB_PC] = (__uint64_t)coro_init;
360	ctx->env[JB_SP] = (__uint64_t)STACK_ADJUST_PTR (sptr, ssize) - sizeof (long);	442	ctx->env[JB_SP] = (__uint64_t)STACK_ADJUST_PTR (sptr, ssize) - sizeof (long);
361		443
362	# elif CORO_ASM	444	# elif CORO_ASM
363		445
		446	#if __i386__ \|\| __x86_64__
364	ctx->sp = (void *)(ssize + (char )sptr);	447	ctx->sp = (void *)(ssize + (char )sptr);
365	--ctx->sp = (void )abort; /* needed for alignment only */	448	--ctx->sp = (void )abort; /* needed for alignment only */
366	--ctx->sp = (void )coro_init;	449	--ctx->sp = (void )coro_init;
367
368	#if CORO_WIN_TIB	450	#if CORO_WIN_TIB
369	--ctx->sp = 0; / ExceptionList */	451	--ctx->sp = 0; / ExceptionList */
370	--ctx->sp = (char )sptr + ssize; /* StackBase */	452	--ctx->sp = (char )sptr + ssize; /* StackBase */
371	--ctx->sp = sptr; / StackLimit */	453	--ctx->sp = sptr; / StackLimit */
		454	#endif
		455	#elif CORO_ARM
		456	/* return address stored in lr register, don't push anything */
		457	#else
		458	#error unsupported architecture
372	#endif	459	#endif
373		460
374	ctx->sp -= NUM_SAVED;	461	ctx->sp -= NUM_SAVED;
375	memset (ctx->sp, 0, sizeof (ctx->sp) NUM_SAVED);	462	memset (ctx->sp, 0, sizeof (ctx->sp) NUM_SAVED);
		463
		464	#if __i386__ \|\| __x86_64__
		465	/* done already */
		466	#elif CORO_ARM
		467	ctx->sp[0] = coro; /* r4 */
		468	ctx->sp[1] = arg; /* r5 */
		469	ctx->sp[8] = (char )coro_init; / lr */
		470	#else
		471	#error unsupported architecture
		472	#endif
376		473
377	# elif CORO_UCONTEXT	474	# elif CORO_UCONTEXT
378		475
379	getcontext (&(ctx->uc));	476	getcontext (&(ctx->uc));
380		477
…		…
441	pthread_testcancel ();	538	pthread_testcancel ();
442	#endif	539	#endif
443	}	540	}
444		541
445	void	542	void
446	coro_create (coro_context ctx, coro_func coro, void arg, void *sptr, long ssize)	543	coro_create (coro_context ctx, coro_func coro, void arg, void *sptr, size_t ssize)
447	{	544	{
448	static coro_context nctx;	545	static coro_context nctx;
449	static int once;	546	static int once;
450		547
451	if (!once)	548	if (!once)
…		…
506	/* fiber backend */	603	/* fiber backend */
507	/*****************************************************************************/	604	/*****************************************************************************/
508	#elif CORO_FIBER	605	#elif CORO_FIBER
509		606
510	#define WIN32_LEAN_AND_MEAN	607	#define WIN32_LEAN_AND_MEAN
		608	#if _WIN32_WINNT < 0x0400
		609	#undef _WIN32_WINNT
511	#define _WIN32_WINNT 0x0400	610	#define _WIN32_WINNT 0x0400
		611	#endif
512	#include <windows.h>	612	#include <windows.h>
513		613
514	VOID CALLBACK	614	VOID CALLBACK
515	coro_init (PVOID arg)	615	coro_init (PVOID arg)
516	{	616	{
…		…
532		632
533	SwitchToFiber (next->fiber);	633	SwitchToFiber (next->fiber);
534	}	634	}
535		635
536	void	636	void
537	coro_create (coro_context ctx, coro_func coro, void arg, void *sptr, long ssize)	637	coro_create (coro_context ctx, coro_func coro, void arg, void *sptr, size_t ssize)
538	{	638	{
539	ctx->fiber = 0;	639	ctx->fiber = 0;
540	ctx->coro = coro;	640	ctx->coro = coro;
541	ctx->arg = arg;	641	ctx->arg = arg;
542		642
…		…
551	{	651	{
552	DeleteFiber (ctx->fiber);	652	DeleteFiber (ctx->fiber);
553	}	653	}
554		654
555	#else	655	#else
556	# error unsupported backend	656	#error unsupported backend
		657	#endif
		658
		659	/*****************************************************************************/
		660	/* stack management */
		661	/*****************************************************************************/
		662	#if CORO_STACKALLOC
		663
		664	#include <stdlib.h>
		665
		666	#ifndef _WIN32
		667	# include <unistd.h>
		668	#endif
		669
		670	#if CORO_USE_VALGRIND
		671	# include <valgrind/valgrind.h>
		672	#endif
		673
		674	#if _POSIX_MAPPED_FILES
		675	# include <sys/mman.h>
		676	# define CORO_MMAP 1
		677	# ifndef MAP_ANONYMOUS
		678	# ifdef MAP_ANON
		679	# define MAP_ANONYMOUS MAP_ANON
		680	# else
		681	# undef CORO_MMAP
		682	# endif
557	#endif	683	# endif
		684	# include <limits.h>
		685	#else
		686	# undef CORO_MMAP
		687	#endif
558		688
		689	#if _POSIX_MEMORY_PROTECTION
		690	# ifndef CORO_GUARDPAGES
		691	# define CORO_GUARDPAGES 4
		692	# endif
		693	#else
		694	# undef CORO_GUARDPAGES
		695	#endif
		696
		697	#if !CORO_MMAP
		698	# undef CORO_GUARDPAGES
		699	#endif
		700
		701	#if !__i386__ && !__x86_64__ && !__powerpc__ && !__arm__ && !__aarch64__ && !__m68k__ && !__alpha__ && !__mips__ && !__sparc64__
		702	# undef CORO_GUARDPAGES
		703	#endif
		704
		705	#ifndef CORO_GUARDPAGES
		706	# define CORO_GUARDPAGES 0
		707	#endif
		708
		709	#if !PAGESIZE
		710	#if !CORO_MMAP
		711	#define PAGESIZE 4096
		712	#else
		713	static size_t
		714	coro_pagesize (void)
		715	{
		716	static size_t pagesize;
		717
		718	if (!pagesize)
		719	pagesize = sysconf (_SC_PAGESIZE);
		720
		721	return pagesize;
		722	}
		723
		724	#define PAGESIZE coro_pagesize ()
		725	#endif
		726	#endif
		727
		728	int
		729	coro_stack_alloc (struct coro_stack *stack, unsigned int size)
		730	{
		731	if (!size)
		732	size = 256 * 1024;
		733
		734	stack->sptr = 0;
		735	stack->ssze = ((size_t)size * sizeof (void ) + PAGESIZE - 1) / PAGESIZE PAGESIZE;
		736
		737	#if CORO_FIBER
		738
		739	stack->sptr = (void *)stack;
		740	return 1;
		741
		742	#else
		743
		744	size_t ssze = stack->ssze + CORO_GUARDPAGES * PAGESIZE;
		745	void *base;
		746
		747	#if CORO_MMAP
		748	/* mmap supposedly does allocate-on-write for us */
		749	base = mmap (0, ssze, PROT_READ \| PROT_WRITE \| PROT_EXEC, MAP_PRIVATE \| MAP_ANONYMOUS, -1, 0);
		750
		751	if (base == (void *)-1)
		752	{
		753	/* some systems don't let us have executable heap */
		754	/* we assume they won't need executable stack in that case */
		755	base = mmap (0, ssze, PROT_READ \| PROT_WRITE, MAP_PRIVATE \| MAP_ANONYMOUS, -1, 0);
		756
		757	if (base == (void *)-1)
		758	return 0;
		759	}
		760
		761	#if CORO_GUARDPAGES
		762	mprotect (base, CORO_GUARDPAGES * PAGESIZE, PROT_NONE);
		763	#endif
		764
		765	base = (void)((char )base + CORO_GUARDPAGES * PAGESIZE);
		766	#else
		767	base = malloc (ssze);
		768	if (!base)
		769	return 0;
		770	#endif
		771
		772	#if CORO_USE_VALGRIND
		773	stack->valgrind_id = VALGRIND_STACK_REGISTER ((char )base, ((char )base) + ssze - CORO_GUARDPAGES * PAGESIZE);
		774	#endif
		775
		776	stack->sptr = base;
		777	return 1;
		778
		779	#endif
		780	}
		781
		782	void
		783	coro_stack_free (struct coro_stack *stack)
		784	{
		785	#if CORO_FIBER
		786	/* nop */
		787	#else
		788	#if CORO_USE_VALGRIND
		789	VALGRIND_STACK_DEREGISTER (stack->valgrind_id);
		790	#endif
		791
		792	#if CORO_MMAP
		793	if (stack->sptr)
		794	munmap ((void)((char )stack->sptr - CORO_GUARDPAGES * PAGESIZE),
		795	stack->ssze + CORO_GUARDPAGES * PAGESIZE);
		796	#else
		797	free (stack->sptr);
		798	#endif
		799	#endif
		800	}
		801
		802	#endif
		803

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Comparing libcoro/coro.c (file contents): Revision 1.65 by root, Wed Dec 5 13:10:21 2012 UTC vs. Revision 1.68 by root, Sun Mar 6 06:26:21 2016 UTC

Diff Legend

Comparing libcoro/coro.c (file contents):
Revision 1.65 by root, Wed Dec 5 13:10:21 2012 UTC vs.
Revision 1.68 by root, Sun Mar 6 06:26:21 2016 UTC