aboutsummaryrefslogtreecommitdiff
path: root/include/thread.h
blob: 330f15089c9a767cd9f7bfdc115777ac4153ec35 (plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
#ifndef _THREAD_H_
#define _THREAD_H_ 1
#if defined(__cplusplus)
extern "C" { 
#endif

AUTOLIB(thread)

/*
 * basic procs and threads
 */
int		proccreate(void (*f)(void *arg), void *arg, unsigned int stacksize);
int		threadcreate(void (*f)(void *arg), void *arg, unsigned int stacksize);
void		threadexits(char *);
void		threadexitsall(char *);
void		threadsetname(char*, ...);
void		threadsetstate(char*, ...);
int			threadyield(void);
void		_threadready(_Thread*);
void		_threadswitch(void);
void		_threadsetsysproc(void);
void		_threadsleep(Rendez*);
_Thread	*_threadwakeup(Rendez*);
#define	yield		threadyield

/*
 * I am tired of making this mistake.
 */
#define	exits	do_not_call_exits_in_threaded_programs
#define	_exits	do_not_call__exits_in_threaded_programs



/*
 * signals
 */
void		threadnotify(int(*f)(void*,char*), int);

/*
 * daemonize
 *
void	threaddaemonize(void);
 */

/*
 * per proc and thread data
 */
void		**procdata(void);

/*
 * supplied by user instead of main.
 * mainstacksize is size of stack allocated to run threadmain
 */
void		threadmain(int argc, char *argv[]);
extern	int	mainstacksize;

/*
 * channel communication
 */
typedef struct Alt Alt;
typedef struct _Altarray _Altarray;
typedef struct Channel Channel;

enum
{
	CHANEND,
	CHANSND,
	CHANRCV,
	CHANNOP,
	CHANNOBLK,
};

struct Alt
{
	void		*v;
	Channel		*c;
	uint		op;
	_Thread		*thread;
	Alt			*xalt;
};

struct _Altarray
{
	Alt			**a;
	uint		n;
	uint		m;
};

struct Channel
{
	uint			bufsize;
	uint			elemsize;
	uchar		*buf;
	uint			nbuf;
	uint			off;
	_Altarray	asend;
	_Altarray	arecv;
	char			*name;
};

/* [Edit .+1,./^$/ |cfn -h $PLAN9/src/libthread/channel.c] */
int		chanalt(Alt *alts);
Channel*	chancreate(int elemsize, int elemcnt);
void		chanfree(Channel *c);
int		chaninit(Channel *c, int elemsize, int elemcnt);
int		channbrecv(Channel *c, void *v);
void*		channbrecvp(Channel *c);
ulong		channbrecvul(Channel *c);
int		channbsend(Channel *c, void *v);
int		channbsendp(Channel *c, void *v);
int		channbsendul(Channel *c, ulong v);
int		chanrecv(Channel *c, void *v);
void*		chanrecvp(Channel *c);
ulong		chanrecvul(Channel *c);
int		chansend(Channel *c, void *v);
int		chansendp(Channel *c, void *v);
int		chansendul(Channel *c, ulong v);
void		chansetname(Channel *c, char *fmt, ...);

#define	alt		chanalt
#define	nbrecv	channbrecv
#define	nbrecvp	channbrecvp
#define	nbrecvul	channbrecvul
#define	nbsend	channbsend
#define	nbsendp	channbsendp
#define	nbsendul	channbsendul
#define	recv		chanrecv
#define	recvp	chanrecvp
#define	recvul	chanrecvul
#define	send		chansend
#define	sendp	chansendp
#define	sendul	chansendul

/*
 * reference counts
 */
typedef struct Ref	Ref;

struct Ref {
	Lock lock;
	long ref;
};

long		decref(Ref *r);
long		incref(Ref *r);

/*
 * slave i/o processes
 */
typedef struct Ioproc Ioproc;

/* [Edit .+1,/^$/ |cfn -h $PLAN9/src/libthread/io*.c] */
void		closeioproc(Ioproc *io);
long		iocall(Ioproc *io, long (*op)(va_list*), ...);
int		ioclose(Ioproc *io, int fd);
int		iodial(Ioproc *io, char *addr, char *local, char *dir, int *cdfp);
void		iointerrupt(Ioproc *io);
int		ioopen(Ioproc *io, char *path, int mode);
Ioproc*		ioproc(void);
long		ioread(Ioproc *io, int fd, void *a, long n);
int		ioread9pmsg(Ioproc*, int, void*, int);
long		ioreadn(Ioproc *io, int fd, void *a, long n);
int		iorecvfd(Ioproc *, int);
int		iosendfd(Ioproc*, int, int);
int		iosleep(Ioproc *io, long n);
long		iowrite(Ioproc *io, int fd, void *a, long n);

/*
 * exec external programs
 */
void		threadexec(Channel*, int[3], char*, char *[]);
void		threadexecl(Channel*, int[3], char*, ...);
int		threadspawn(int[3], char*, char*[]);
int		threadspawnl(int[3], char*, ...);
Channel*	threadwaitchan(void);

#if defined(__cplusplus)
}
#endif
#endif	/* _THREADH_ */