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 04e0a9bb 2011-10-14 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 04e0a9bb 2011-10-14 rsc #	elif defined(__x86_64__)
 44 04e0a9bb 2011-10-14 rsc #		include "x86_64-ucontext.h"
 45 813b3eea 2011-10-23 rsc #	elif defined(__ppc__) || defined(__power__)
 46 110c707d 2006-04-21 devnull #		include "power-ucontext.h"
 47 fc567f47 2011-08-02 rsc #	else
 48 fc567f47 2011-08-02 rsc #		error "unknown architecture"
 49 110c707d 2006-04-21 devnull #	endif
 50 50f7ec33 2005-01-07 devnull #endif
 51 50f7ec33 2005-01-07 devnull 
 52 cea10000 2005-05-01 devnull #if defined(__OpenBSD__)
 53 b4b68641 2005-07-20 devnull #	define mcontext libthread_mcontext
 54 b4b68641 2005-07-20 devnull #	define mcontext_t libthread_mcontext_t
 55 b4b68641 2005-07-20 devnull #	define ucontext libthread_ucontext
 56 b4b68641 2005-07-20 devnull #	define ucontext_t libthread_ucontext_t
 57 9d654ebc 2005-07-19 devnull #	if defined __i386__
 58 9d654ebc 2005-07-19 devnull #		include "386-ucontext.h"
 59 20f5692b 2012-07-14 rsc #	elif defined __amd64__
 60 20f5692b 2012-07-14 rsc #		include "x86_64-ucontext.h"
 61 9d654ebc 2005-07-19 devnull #	else
 62 9d654ebc 2005-07-19 devnull #		include "power-ucontext.h"
 63 9d654ebc 2005-07-19 devnull #	endif
 64 cea10000 2005-05-01 devnull extern pid_t rfork_thread(int, void*, int(*)(void*), void*);
 65 cea10000 2005-05-01 devnull #endif
 66 cea10000 2005-05-01 devnull 
 67 528dba4d 2007-05-01 devnull /* THIS DOES NOT WORK!  Don't do this!
 68 528dba4d 2007-05-01 devnull (At least, not on Solaris.  Maybe this is right for Linux,
 69 528dba4d 2007-05-01 devnull in which case it should say if defined(__linux__) && defined(__sun__),
 70 528dba4d 2007-05-01 devnull but surely the latter would be defined(__sparc__).
 71 528dba4d 2007-05-01 devnull 
 72 17558fbe 2006-06-04 devnull #if defined(__sun__)
 73 17558fbe 2006-06-04 devnull #	define mcontext libthread_mcontext
 74 17558fbe 2006-06-04 devnull #	define mcontext_t libthread_mcontext_t
 75 17558fbe 2006-06-04 devnull #	define ucontext libthread_ucontext
 76 17558fbe 2006-06-04 devnull #	define ucontext_t libthread_ucontext_t
 77 17558fbe 2006-06-04 devnull #	include "sparc-ucontext.h"
 78 17558fbe 2006-06-04 devnull #endif
 79 528dba4d 2007-05-01 devnull */
 80 17558fbe 2006-06-04 devnull 
 81 33a102fc 2005-11-04 devnull #if defined(__arm__)
 82 9cf92718 2011-05-18 rsc int mygetmcontext(ulong*);
 83 9cf92718 2011-05-18 rsc void mysetmcontext(const ulong*);
 84 9cf92718 2011-05-18 rsc #define	setcontext(u)	mysetmcontext(&(u)->uc_mcontext.arm_r0)
 85 9cf92718 2011-05-18 rsc #define	getcontext(u)	mygetmcontext(&(u)->uc_mcontext.arm_r0)
 86 33a102fc 2005-11-04 devnull #endif
 87 33a102fc 2005-11-04 devnull 
 88 17558fbe 2006-06-04 devnull 
 89 619085f0 2004-12-25 devnull typedef struct Context Context;
 90 e127e40b 2004-12-27 devnull typedef struct Execjob Execjob;
 91 619085f0 2004-12-25 devnull typedef struct Proc Proc;
 92 619085f0 2004-12-25 devnull typedef struct _Procrendez _Procrendez;
 93 619085f0 2004-12-25 devnull 
 94 e1dc7e45 2004-12-27 devnull typedef struct Jmp Jmp;
 95 e1dc7e45 2004-12-27 devnull struct Jmp
 96 e1dc7e45 2004-12-27 devnull {
 97 e1dc7e45 2004-12-27 devnull 	p9jmp_buf b;
 98 e1dc7e45 2004-12-27 devnull };
 99 e1dc7e45 2004-12-27 devnull 
100 619085f0 2004-12-25 devnull enum
101 619085f0 2004-12-25 devnull {
102 619085f0 2004-12-25 devnull 	STACK = 8192
103 619085f0 2004-12-25 devnull };
104 619085f0 2004-12-25 devnull 
105 619085f0 2004-12-25 devnull struct Context
106 619085f0 2004-12-25 devnull {
107 619085f0 2004-12-25 devnull 	ucontext_t	uc;
108 fc567f47 2011-08-02 rsc #ifdef __APPLE__
109 fc567f47 2011-08-02 rsc 	/*
110 fc567f47 2011-08-02 rsc 	 * On Snow Leopard, etc., the context routines exist,
111 fc567f47 2011-08-02 rsc 	 * so we use them, but apparently they write past the
112 fc567f47 2011-08-02 rsc 	 * end of the ucontext_t.  Sigh.  We put some extra
113 fc567f47 2011-08-02 rsc 	 * scratch space here for them.
114 fc567f47 2011-08-02 rsc 	 */
115 04e0a9bb 2011-10-14 rsc 	uchar	buf[1024];
116 fc567f47 2011-08-02 rsc #endif
117 619085f0 2004-12-25 devnull };
118 619085f0 2004-12-25 devnull 
119 e127e40b 2004-12-27 devnull struct Execjob
120 e127e40b 2004-12-27 devnull {
121 e127e40b 2004-12-27 devnull 	int *fd;
122 e127e40b 2004-12-27 devnull 	char *cmd;
123 e127e40b 2004-12-27 devnull 	char **argv;
124 9e4b56e7 2012-10-22 rsc 	char *dir;
125 e127e40b 2004-12-27 devnull 	Channel *c;
126 e127e40b 2004-12-27 devnull };
127 e127e40b 2004-12-27 devnull 
128 619085f0 2004-12-25 devnull struct _Thread
129 619085f0 2004-12-25 devnull {
130 619085f0 2004-12-25 devnull 	_Thread	*next;
131 619085f0 2004-12-25 devnull 	_Thread	*prev;
132 619085f0 2004-12-25 devnull 	_Thread	*allnext;
133 619085f0 2004-12-25 devnull 	_Thread	*allprev;
134 619085f0 2004-12-25 devnull 	Context	context;
135 fc567f47 2011-08-02 rsc 	void	(*startfn)(void*);
136 fc567f47 2011-08-02 rsc 	void	*startarg;
137 619085f0 2004-12-25 devnull 	uint	id;
138 619085f0 2004-12-25 devnull 	uchar	*stk;
139 619085f0 2004-12-25 devnull 	uint	stksize;
140 619085f0 2004-12-25 devnull 	int		exiting;
141 619085f0 2004-12-25 devnull 	Proc	*proc;
142 619085f0 2004-12-25 devnull 	char	name[256];
143 619085f0 2004-12-25 devnull 	char	state[256];
144 8dd8a81f 2005-03-18 devnull 	void *udata;
145 47ede89e 2007-08-22 rsc 	Alt	*alt;
146 619085f0 2004-12-25 devnull };
147 619085f0 2004-12-25 devnull 
148 619085f0 2004-12-25 devnull struct _Procrendez
149 619085f0 2004-12-25 devnull {
150 619085f0 2004-12-25 devnull 	Lock		*l;
151 619085f0 2004-12-25 devnull 	int		asleep;
152 4dbefdd4 2004-12-27 devnull #ifdef PLAN9PORT_USING_PTHREADS
153 619085f0 2004-12-25 devnull 	pthread_cond_t	cond;
154 4dbefdd4 2004-12-27 devnull #else
155 4dbefdd4 2004-12-27 devnull 	int		pid;
156 4dbefdd4 2004-12-27 devnull #endif
157 619085f0 2004-12-25 devnull };
158 619085f0 2004-12-25 devnull 
159 619085f0 2004-12-25 devnull extern	void	_procsleep(_Procrendez*);
160 619085f0 2004-12-25 devnull extern	void	_procwakeup(_Procrendez*);
161 a0a331aa 2005-01-06 devnull extern	void	_procwakeupandunlock(_Procrendez*);
162 619085f0 2004-12-25 devnull 
163 619085f0 2004-12-25 devnull struct Proc
164 619085f0 2004-12-25 devnull {
165 4dbefdd4 2004-12-27 devnull 	Proc		*next;
166 4dbefdd4 2004-12-27 devnull 	Proc		*prev;
167 4dbefdd4 2004-12-27 devnull 	char		msg[128];
168 4dbefdd4 2004-12-27 devnull #ifdef PLAN9PORT_USING_PTHREADS
169 4dbefdd4 2004-12-27 devnull 	pthread_t	osprocid;
170 4dbefdd4 2004-12-27 devnull #else
171 669a062b 2005-01-30 devnull 	int		osprocid;
172 4dbefdd4 2004-12-27 devnull #endif
173 619085f0 2004-12-25 devnull 	Lock		lock;
174 8cbd854a 2004-12-27 devnull 	int			nswitch;
175 619085f0 2004-12-25 devnull 	_Thread		*thread;
176 ff63eeb1 2006-06-26 devnull 	_Thread		*pinthread;
177 619085f0 2004-12-25 devnull 	_Threadlist	runqueue;
178 615e0f9f 2006-02-07 devnull 	_Threadlist	idlequeue;
179 619085f0 2004-12-25 devnull 	_Threadlist	allthreads;
180 619085f0 2004-12-25 devnull 	uint		nthread;
181 619085f0 2004-12-25 devnull 	uint		sysproc;
182 619085f0 2004-12-25 devnull 	_Procrendez	runrend;
183 619085f0 2004-12-25 devnull 	Context	schedcontext;
184 619085f0 2004-12-25 devnull 	void		*udata;
185 e1dc7e45 2004-12-27 devnull 	Jmp		sigjmp;
186 8ee6ad4d 2005-02-14 devnull 	int		mainproc;
187 619085f0 2004-12-25 devnull };
188 619085f0 2004-12-25 devnull 
189 619085f0 2004-12-25 devnull #define proc() _threadproc()
190 619085f0 2004-12-25 devnull #define setproc(p) _threadsetproc(p)
191 619085f0 2004-12-25 devnull 
192 4dbefdd4 2004-12-27 devnull extern Proc *_threadprocs;
193 4dbefdd4 2004-12-27 devnull extern Lock _threadprocslock;
194 955a2ca7 2004-12-27 devnull extern Proc *_threadexecproc;
195 955a2ca7 2004-12-27 devnull extern Channel *_threadexecchan;
196 955a2ca7 2004-12-27 devnull extern QLock _threadexeclock;
197 955a2ca7 2004-12-27 devnull extern Channel *_dowaitchan;
198 4dbefdd4 2004-12-27 devnull 
199 73722a8b 2004-12-27 devnull extern void _procstart(Proc*, void (*fn)(Proc*));
200 619085f0 2004-12-25 devnull extern _Thread *_threadcreate(Proc*, void(*fn)(void*), void*, uint);
201 619085f0 2004-12-25 devnull extern void _threadexit(void);
202 619085f0 2004-12-25 devnull extern Proc *_threadproc(void);
203 619085f0 2004-12-25 devnull extern void _threadsetproc(Proc*);
204 619085f0 2004-12-25 devnull extern int _threadlock(Lock*, int, ulong);
205 619085f0 2004-12-25 devnull extern void _threadunlock(Lock*, ulong);
206 e1dc7e45 2004-12-27 devnull extern void _pthreadinit(void);
207 9e4b56e7 2012-10-22 rsc extern int _threadspawn(int*, char*, char**, char*);
208 9e4b56e7 2012-10-22 rsc extern int _runthreadspawn(int*, char*, char**, char*);
209 2c87dda8 2004-12-28 devnull extern void _threadsetupdaemonize(void);
210 2c87dda8 2004-12-28 devnull extern void _threaddodaemonize(char*);
211 1d2533d0 2004-12-28 devnull extern void _threadpexit(void);
212 c7acb53e 2005-01-04 devnull extern void _threaddaemonize(void);