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
|
#include "u.h"
#include <errno.h>
#include <sys/time.h>
#include <sys/types.h>
#include <sys/wait.h>
#include <sched.h>
#include <signal.h>
#include <ucontext.h>
#include <sys/utsname.h>
#include "libc.h"
#include "thread.h"
#if defined(__FreeBSD__) && __FreeBSD_version < 500000
extern int getcontext(ucontext_t*);
extern void setcontext(ucontext_t*);
extern int swapcontext(ucontext_t*, ucontext_t*);
extern void makecontext(ucontext_t*, void(*)(), int, ...);
#endif
#if defined(__APPLE__)
# define mcontext libthread_mcontext
# define mcontext_t libthread_mcontext_t
# define ucontext libthread_ucontext
# define ucontext_t libthread_ucontext_t
# include "Darwin-ucontext.h"
#endif
typedef struct Context Context;
typedef struct Execjob Execjob;
typedef struct Proc Proc;
typedef struct _Procrendez _Procrendez;
typedef struct Jmp Jmp;
struct Jmp
{
p9jmp_buf b;
};
enum
{
STACK = 8192
};
struct Context
{
ucontext_t uc;
};
struct Execjob
{
int *fd;
char *cmd;
char **argv;
Channel *c;
};
struct _Thread
{
_Thread *next;
_Thread *prev;
_Thread *allnext;
_Thread *allprev;
Context context;
uint id;
uchar *stk;
uint stksize;
int exiting;
void (*startfn)(void*);
void *startarg;
Proc *proc;
char name[256];
char state[256];
};
struct _Procrendez
{
Lock *l;
int asleep;
#ifdef PLAN9PORT_USING_PTHREADS
pthread_cond_t cond;
#else
int pid;
#endif
};
extern void _procsleep(_Procrendez*);
extern void _procwakeup(_Procrendez*);
extern void _procwakeupandunlock(_Procrendez*);
struct Proc
{
Proc *next;
Proc *prev;
char msg[128];
#ifdef PLAN9PORT_USING_PTHREADS
pthread_t osprocid;
#else
int osprocid;
#endif
Lock lock;
int nswitch;
_Thread *thread;
_Threadlist runqueue;
_Threadlist allthreads;
uint nthread;
uint sysproc;
_Procrendez runrend;
Context schedcontext;
void *udata;
Jmp sigjmp;
};
#define proc() _threadproc()
#define setproc(p) _threadsetproc(p)
extern Proc *_threadprocs;
extern Lock _threadprocslock;
extern Proc *_threadexecproc;
extern Channel *_threadexecchan;
extern QLock _threadexeclock;
extern Channel *_dowaitchan;
extern void _procstart(Proc*, void (*fn)(Proc*));
extern _Thread *_threadcreate(Proc*, void(*fn)(void*), void*, uint);
extern void _threadexit(void);
extern Proc *_threadproc(void);
extern void _threadsetproc(Proc*);
extern int _threadlock(Lock*, int, ulong);
extern void _threadunlock(Lock*, ulong);
extern void _pthreadinit(void);
extern int _threadspawn(int*, char*, char**);
extern int _runthreadspawn(int*, char*, char**);
extern void _threadsetupdaemonize(void);
extern void _threaddodaemonize(char*);
extern void _threadpexit(void);
extern void _threaddaemonize(void);
|