1 #include "u.h"
2 #include <errno.h>
3 #include <sys/time.h>
4 #include <sys/types.h>
5 #include <sys/wait.h>
6 #include <sched.h>
7 #include <signal.h>
8 #if !defined(__OpenBSD__)
9 #	include <ucontext.h>
10 #endif
11 #include <sys/utsname.h>
12 #include "libc.h"
13 #include "thread.h"
14 
15 #if defined(__FreeBSD__) && __FreeBSD__ < 5
16 extern	int		getmcontext(mcontext_t*);
17 extern	void		setmcontext(mcontext_t*);
18 #define	setcontext(u)	setmcontext(&(u)->uc_mcontext)
19 #define	getcontext(u)	getmcontext(&(u)->uc_mcontext)
20 extern	int		swapcontext(ucontext_t*, ucontext_t*);
21 extern	void		makecontext(ucontext_t*, void(*)(), int, ...);
22 #endif
23 
24 #if defined(__APPLE__)
25 #	define mcontext libthread_mcontext
26 #	define mcontext_t libthread_mcontext_t
27 #	define ucontext libthread_ucontext
28 #	define ucontext_t libthread_ucontext_t
29 #	if defined(__i386__)
30 #		include "386-ucontext.h"
31 #	else
32 #		include "power-ucontext.h"
33 #	endif
34 #endif
35 
36 #if defined(__OpenBSD__)
37 #	define mcontext libthread_mcontext
38 #	define mcontext_t libthread_mcontext_t
39 #	define ucontext libthread_ucontext
40 #	define ucontext_t libthread_ucontext_t
41 #	if defined __i386__
42 #		include "386-ucontext.h"
43 #	else
44 #		include "power-ucontext.h"
45 #	endif
46 extern pid_t rfork_thread(int, void*, int(*)(void*), void*);
47 #endif
48 
49 #if defined(__sun__)
50 #	define mcontext libthread_mcontext
51 #	define mcontext_t libthread_mcontext_t
52 #	define ucontext libthread_ucontext
53 #	define ucontext_t libthread_ucontext_t
54 #	include "sparc-ucontext.h"
55 #endif
56 
57 #if defined(__arm__)
58 int getmcontext(mcontext_t*);
59 void setmcontext(const mcontext_t*);
60 #define	setcontext(u)	setmcontext(&(u)->uc_mcontext)
61 #define	getcontext(u)	getmcontext(&(u)->uc_mcontext)
62 #endif
63 
64 
65 typedef struct Context Context;
66 typedef struct Execjob Execjob;
67 typedef struct Proc Proc;
68 typedef struct _Procrendez _Procrendez;
69 
70 typedef struct Jmp Jmp;
71 struct Jmp
72 {
73 	p9jmp_buf b;
74 };
75 
76 enum
77 {
78 	STACK = 8192
79 };
80 
81 struct Context
82 {
83 	ucontext_t	uc;
84 };
85 
86 struct Execjob
87 {
88 	int *fd;
89 	char *cmd;
90 	char **argv;
91 	Channel *c;
92 };
93 
94 struct _Thread
95 {
96 	_Thread	*next;
97 	_Thread	*prev;
98 	_Thread	*allnext;
99 	_Thread	*allprev;
100 	Context	context;
101 	uint	id;
102 	uchar	*stk;
103 	uint	stksize;
104 	int		exiting;
105 	void	(*startfn)(void*);
106 	void	*startarg;
107 	Proc	*proc;
108 	char	name[256];
109 	char	state[256];
110 	void *udata;
111 };
112 
113 struct _Procrendez
114 {
115 	Lock		*l;
116 	int		asleep;
117 #ifdef PLAN9PORT_USING_PTHREADS
118 	pthread_cond_t	cond;
119 #else
120 	int		pid;
121 #endif
122 };
123 
124 extern	void	_procsleep(_Procrendez*);
125 extern	void	_procwakeup(_Procrendez*);
126 extern	void	_procwakeupandunlock(_Procrendez*);
127 
128 struct Proc
129 {
130 	Proc		*next;
131 	Proc		*prev;
132 	char		msg[128];
133 #ifdef PLAN9PORT_USING_PTHREADS
134 	pthread_t	osprocid;
135 #else
136 	int		osprocid;
137 #endif
138 	Lock		lock;
139 	int			nswitch;
140 	_Thread		*thread;
141 	_Threadlist	runqueue;
142 	_Threadlist	idlequeue;
143 	_Threadlist	allthreads;
144 	uint		nthread;
145 	uint		sysproc;
146 	_Procrendez	runrend;
147 	Context	schedcontext;
148 	void		*udata;
149 	Jmp		sigjmp;
150 	int		mainproc;
151 };
152 
153 #define proc() _threadproc()
154 #define setproc(p) _threadsetproc(p)
155 
156 extern Proc *_threadprocs;
157 extern Lock _threadprocslock;
158 extern Proc *_threadexecproc;
159 extern Channel *_threadexecchan;
160 extern QLock _threadexeclock;
161 extern Channel *_dowaitchan;
162 
163 extern void _procstart(Proc*, void (*fn)(Proc*));
164 extern _Thread *_threadcreate(Proc*, void(*fn)(void*), void*, uint);
165 extern void _threadexit(void);
166 extern Proc *_threadproc(void);
167 extern void _threadsetproc(Proc*);
168 extern int _threadlock(Lock*, int, ulong);
169 extern void _threadunlock(Lock*, ulong);
170 extern void _pthreadinit(void);
171 extern int _threadspawn(int*, char*, char**);
172 extern int _runthreadspawn(int*, char*, char**);
173 extern void _threadsetupdaemonize(void);
174 extern void _threaddodaemonize(char*);
175 extern void _threadpexit(void);
176 extern void _threaddaemonize(void);