1 d54ead7f 2004-12-28 devnull #include "u.h"
  2 d54ead7f 2004-12-28 devnull #include <errno.h>
  3 d54ead7f 2004-12-28 devnull #include <sys/time.h>
  4 d54ead7f 2004-12-28 devnull #include <sys/types.h>
  5 d54ead7f 2004-12-28 devnull #include <sys/wait.h>
  6 d54ead7f 2004-12-28 devnull #include <sched.h>
  7 d54ead7f 2004-12-28 devnull #include <signal.h>
  8 9d654ebc 2005-07-19 devnull #if !defined(__OpenBSD__)
  9 fa662c95 2009-09-11 russcox #	if defined(__APPLE__)
 10 fa662c95 2009-09-11 russcox #		define _XOPEN_SOURCE 	/* for Snow Leopard */
 11 fa662c95 2009-09-11 russcox #	endif
 12 cea10000 2005-05-01 devnull #	include <ucontext.h>
 13 cea10000 2005-05-01 devnull #endif
 14 7a2c8850 2005-01-17 devnull #include <sys/utsname.h>
 15 d54ead7f 2004-12-28 devnull #include "libc.h"
 16 d54ead7f 2004-12-28 devnull #include "thread.h"
 17 619085f0 2004-12-25 devnull 
 18 48ca8d21 2005-11-01 devnull #if defined(__FreeBSD__) && __FreeBSD__ < 5
 19 1e05fdf9 2005-11-04 devnull extern	int		getmcontext(mcontext_t*);
 20 1e05fdf9 2005-11-04 devnull extern	void		setmcontext(mcontext_t*);
 21 1e05fdf9 2005-11-04 devnull #define	setcontext(u)	setmcontext(&(u)->uc_mcontext)
 22 1e05fdf9 2005-11-04 devnull #define	getcontext(u)	getmcontext(&(u)->uc_mcontext)
 23 d54ead7f 2004-12-28 devnull extern	int		swapcontext(ucontext_t*, ucontext_t*);
 24 d54ead7f 2004-12-28 devnull extern	void		makecontext(ucontext_t*, void(*)(), int, ...);
 25 d54ead7f 2004-12-28 devnull #endif
 26 d54ead7f 2004-12-28 devnull 
 27 2640996a 2007-11-05 rsc #if defined(__APPLE__)
 28 2640996a 2007-11-05 rsc 	/*
 29 2640996a 2007-11-05 rsc 	 * OS X before 10.5 (Leopard) does not provide
 30 2640996a 2007-11-05 rsc 	 * swapcontext nor makecontext, so we have to use our own.
 31 2640996a 2007-11-05 rsc 	 * In theory, Leopard does provide them, but when we use 
 32 2640996a 2007-11-05 rsc 	 * them, they seg fault.  Maybe we're using them wrong.
 33 2640996a 2007-11-05 rsc 	 * So just use our own versions, even on Leopard.
 34 2640996a 2007-11-05 rsc 	 */
 35 b8f742db 2005-01-11 devnull #	define mcontext libthread_mcontext
 36 b8f742db 2005-01-11 devnull #	define mcontext_t libthread_mcontext_t
 37 b8f742db 2005-01-11 devnull #	define ucontext libthread_ucontext
 38 b8f742db 2005-01-11 devnull #	define ucontext_t libthread_ucontext_t
 39 2640996a 2007-11-05 rsc #	define swapcontext libthread_swapcontext
 40 2640996a 2007-11-05 rsc #	define makecontext libthread_makecontext
 41 110c707d 2006-04-21 devnull #	if defined(__i386__)
 42 110c707d 2006-04-21 devnull #		include "386-ucontext.h"
 43 110c707d 2006-04-21 devnull #	else
 44 110c707d 2006-04-21 devnull #		include "power-ucontext.h"
 45 110c707d 2006-04-21 devnull #	endif
 46 50f7ec33 2005-01-07 devnull #endif
 47 50f7ec33 2005-01-07 devnull 
 48 cea10000 2005-05-01 devnull #if defined(__OpenBSD__)
 49 b4b68641 2005-07-20 devnull #	define mcontext libthread_mcontext
 50 b4b68641 2005-07-20 devnull #	define mcontext_t libthread_mcontext_t
 51 b4b68641 2005-07-20 devnull #	define ucontext libthread_ucontext
 52 b4b68641 2005-07-20 devnull #	define ucontext_t libthread_ucontext_t
 53 9d654ebc 2005-07-19 devnull #	if defined __i386__
 54 9d654ebc 2005-07-19 devnull #		include "386-ucontext.h"
 55 9d654ebc 2005-07-19 devnull #	else
 56 9d654ebc 2005-07-19 devnull #		include "power-ucontext.h"
 57 9d654ebc 2005-07-19 devnull #	endif
 58 cea10000 2005-05-01 devnull extern pid_t rfork_thread(int, void*, int(*)(void*), void*);
 59 cea10000 2005-05-01 devnull #endif
 60 cea10000 2005-05-01 devnull 
 61 528dba4d 2007-05-01 devnull /* THIS DOES NOT WORK!  Don't do this!
 62 528dba4d 2007-05-01 devnull (At least, not on Solaris.  Maybe this is right for Linux,
 63 528dba4d 2007-05-01 devnull in which case it should say if defined(__linux__) && defined(__sun__),
 64 528dba4d 2007-05-01 devnull but surely the latter would be defined(__sparc__).
 65 528dba4d 2007-05-01 devnull 
 66 17558fbe 2006-06-04 devnull #if defined(__sun__)
 67 17558fbe 2006-06-04 devnull #	define mcontext libthread_mcontext
 68 17558fbe 2006-06-04 devnull #	define mcontext_t libthread_mcontext_t
 69 17558fbe 2006-06-04 devnull #	define ucontext libthread_ucontext
 70 17558fbe 2006-06-04 devnull #	define ucontext_t libthread_ucontext_t
 71 17558fbe 2006-06-04 devnull #	include "sparc-ucontext.h"
 72 17558fbe 2006-06-04 devnull #endif
 73 528dba4d 2007-05-01 devnull */
 74 17558fbe 2006-06-04 devnull 
 75 33a102fc 2005-11-04 devnull #if defined(__arm__)
 76 9cf92718 2011-05-18 rsc int mygetmcontext(ulong*);
 77 9cf92718 2011-05-18 rsc void mysetmcontext(const ulong*);
 78 9cf92718 2011-05-18 rsc #define	setcontext(u)	mysetmcontext(&(u)->uc_mcontext.arm_r0)
 79 9cf92718 2011-05-18 rsc #define	getcontext(u)	mygetmcontext(&(u)->uc_mcontext.arm_r0)
 80 33a102fc 2005-11-04 devnull #endif
 81 33a102fc 2005-11-04 devnull 
 82 17558fbe 2006-06-04 devnull 
 83 619085f0 2004-12-25 devnull typedef struct Context Context;
 84 e127e40b 2004-12-27 devnull typedef struct Execjob Execjob;
 85 619085f0 2004-12-25 devnull typedef struct Proc Proc;
 86 619085f0 2004-12-25 devnull typedef struct _Procrendez _Procrendez;
 87 619085f0 2004-12-25 devnull 
 88 e1dc7e45 2004-12-27 devnull typedef struct Jmp Jmp;
 89 e1dc7e45 2004-12-27 devnull struct Jmp
 90 e1dc7e45 2004-12-27 devnull {
 91 e1dc7e45 2004-12-27 devnull 	p9jmp_buf b;
 92 e1dc7e45 2004-12-27 devnull };
 93 e1dc7e45 2004-12-27 devnull 
 94 619085f0 2004-12-25 devnull enum
 95 619085f0 2004-12-25 devnull {
 96 619085f0 2004-12-25 devnull 	STACK = 8192
 97 619085f0 2004-12-25 devnull };
 98 619085f0 2004-12-25 devnull 
 99 619085f0 2004-12-25 devnull struct Context
100 619085f0 2004-12-25 devnull {
101 619085f0 2004-12-25 devnull 	ucontext_t	uc;
102 619085f0 2004-12-25 devnull };
103 619085f0 2004-12-25 devnull 
104 e127e40b 2004-12-27 devnull struct Execjob
105 e127e40b 2004-12-27 devnull {
106 e127e40b 2004-12-27 devnull 	int *fd;
107 e127e40b 2004-12-27 devnull 	char *cmd;
108 e127e40b 2004-12-27 devnull 	char **argv;
109 e127e40b 2004-12-27 devnull 	Channel *c;
110 e127e40b 2004-12-27 devnull };
111 e127e40b 2004-12-27 devnull 
112 619085f0 2004-12-25 devnull struct _Thread
113 619085f0 2004-12-25 devnull {
114 619085f0 2004-12-25 devnull 	_Thread	*next;
115 619085f0 2004-12-25 devnull 	_Thread	*prev;
116 619085f0 2004-12-25 devnull 	_Thread	*allnext;
117 619085f0 2004-12-25 devnull 	_Thread	*allprev;
118 619085f0 2004-12-25 devnull 	Context	context;
119 619085f0 2004-12-25 devnull 	uint	id;
120 619085f0 2004-12-25 devnull 	uchar	*stk;
121 619085f0 2004-12-25 devnull 	uint	stksize;
122 619085f0 2004-12-25 devnull 	int		exiting;
123 619085f0 2004-12-25 devnull 	void	(*startfn)(void*);
124 619085f0 2004-12-25 devnull 	void	*startarg;
125 619085f0 2004-12-25 devnull 	Proc	*proc;
126 619085f0 2004-12-25 devnull 	char	name[256];
127 619085f0 2004-12-25 devnull 	char	state[256];
128 8dd8a81f 2005-03-18 devnull 	void *udata;
129 47ede89e 2007-08-22 rsc 	Alt	*alt;
130 619085f0 2004-12-25 devnull };
131 619085f0 2004-12-25 devnull 
132 619085f0 2004-12-25 devnull struct _Procrendez
133 619085f0 2004-12-25 devnull {
134 619085f0 2004-12-25 devnull 	Lock		*l;
135 619085f0 2004-12-25 devnull 	int		asleep;
136 4dbefdd4 2004-12-27 devnull #ifdef PLAN9PORT_USING_PTHREADS
137 619085f0 2004-12-25 devnull 	pthread_cond_t	cond;
138 4dbefdd4 2004-12-27 devnull #else
139 4dbefdd4 2004-12-27 devnull 	int		pid;
140 4dbefdd4 2004-12-27 devnull #endif
141 619085f0 2004-12-25 devnull };
142 619085f0 2004-12-25 devnull 
143 619085f0 2004-12-25 devnull extern	void	_procsleep(_Procrendez*);
144 619085f0 2004-12-25 devnull extern	void	_procwakeup(_Procrendez*);
145 a0a331aa 2005-01-06 devnull extern	void	_procwakeupandunlock(_Procrendez*);
146 619085f0 2004-12-25 devnull 
147 619085f0 2004-12-25 devnull struct Proc
148 619085f0 2004-12-25 devnull {
149 4dbefdd4 2004-12-27 devnull 	Proc		*next;
150 4dbefdd4 2004-12-27 devnull 	Proc		*prev;
151 4dbefdd4 2004-12-27 devnull 	char		msg[128];
152 4dbefdd4 2004-12-27 devnull #ifdef PLAN9PORT_USING_PTHREADS
153 4dbefdd4 2004-12-27 devnull 	pthread_t	osprocid;
154 4dbefdd4 2004-12-27 devnull #else
155 669a062b 2005-01-30 devnull 	int		osprocid;
156 4dbefdd4 2004-12-27 devnull #endif
157 619085f0 2004-12-25 devnull 	Lock		lock;
158 8cbd854a 2004-12-27 devnull 	int			nswitch;
159 619085f0 2004-12-25 devnull 	_Thread		*thread;
160 ff63eeb1 2006-06-26 devnull 	_Thread		*pinthread;
161 619085f0 2004-12-25 devnull 	_Threadlist	runqueue;
162 615e0f9f 2006-02-07 devnull 	_Threadlist	idlequeue;
163 619085f0 2004-12-25 devnull 	_Threadlist	allthreads;
164 619085f0 2004-12-25 devnull 	uint		nthread;
165 619085f0 2004-12-25 devnull 	uint		sysproc;
166 619085f0 2004-12-25 devnull 	_Procrendez	runrend;
167 619085f0 2004-12-25 devnull 	Context	schedcontext;
168 619085f0 2004-12-25 devnull 	void		*udata;
169 e1dc7e45 2004-12-27 devnull 	Jmp		sigjmp;
170 8ee6ad4d 2005-02-14 devnull 	int		mainproc;
171 619085f0 2004-12-25 devnull };
172 619085f0 2004-12-25 devnull 
173 619085f0 2004-12-25 devnull #define proc() _threadproc()
174 619085f0 2004-12-25 devnull #define setproc(p) _threadsetproc(p)
175 619085f0 2004-12-25 devnull 
176 4dbefdd4 2004-12-27 devnull extern Proc *_threadprocs;
177 4dbefdd4 2004-12-27 devnull extern Lock _threadprocslock;
178 955a2ca7 2004-12-27 devnull extern Proc *_threadexecproc;
179 955a2ca7 2004-12-27 devnull extern Channel *_threadexecchan;
180 955a2ca7 2004-12-27 devnull extern QLock _threadexeclock;
181 955a2ca7 2004-12-27 devnull extern Channel *_dowaitchan;
182 4dbefdd4 2004-12-27 devnull 
183 73722a8b 2004-12-27 devnull extern void _procstart(Proc*, void (*fn)(Proc*));
184 619085f0 2004-12-25 devnull extern _Thread *_threadcreate(Proc*, void(*fn)(void*), void*, uint);
185 619085f0 2004-12-25 devnull extern void _threadexit(void);
186 619085f0 2004-12-25 devnull extern Proc *_threadproc(void);
187 619085f0 2004-12-25 devnull extern void _threadsetproc(Proc*);
188 619085f0 2004-12-25 devnull extern int _threadlock(Lock*, int, ulong);
189 619085f0 2004-12-25 devnull extern void _threadunlock(Lock*, ulong);
190 e1dc7e45 2004-12-27 devnull extern void _pthreadinit(void);
191 e127e40b 2004-12-27 devnull extern int _threadspawn(int*, char*, char**);
192 e127e40b 2004-12-27 devnull extern int _runthreadspawn(int*, char*, char**);
193 2c87dda8 2004-12-28 devnull extern void _threadsetupdaemonize(void);
194 2c87dda8 2004-12-28 devnull extern void _threaddodaemonize(char*);
195 1d2533d0 2004-12-28 devnull extern void _threadpexit(void);
196 c7acb53e 2005-01-04 devnull extern void _threaddaemonize(void);