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libthread: use libc functions in ucontext for macOS (#417)
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  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 32983117 2020-06-16 noreply #		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 cea10000 2005-05-01 devnull #if defined(__OpenBSD__)

 19 b4b68641 2005-07-20 devnull #	define mcontext libthread_mcontext

 20 b4b68641 2005-07-20 devnull #	define mcontext_t libthread_mcontext_t

 21 b4b68641 2005-07-20 devnull #	define ucontext libthread_ucontext

 22 b4b68641 2005-07-20 devnull #	define ucontext_t libthread_ucontext_t

 23 9d654ebc 2005-07-19 devnull #	if defined __i386__

 24 9d654ebc 2005-07-19 devnull #		include "386-ucontext.h"

 25 20f5692b 2012-07-14 rsc #	elif defined __amd64__

 26 20f5692b 2012-07-14 rsc #		include "x86_64-ucontext.h"

 27 9d654ebc 2005-07-19 devnull #	else

 28 9d654ebc 2005-07-19 devnull #		include "power-ucontext.h"

 29 9d654ebc 2005-07-19 devnull #	endif

 30 cea10000 2005-05-01 devnull extern pid_t rfork_thread(int, void*, int(*)(void*), void*);

 31 cea10000 2005-05-01 devnull #endif

 32 cea10000 2005-05-01 devnull 

 33 33a102fc 2005-11-04 devnull #if defined(__arm__)

 34 9cf92718 2011-05-18 rsc int mygetmcontext(ulong*);

 35 9cf92718 2011-05-18 rsc void mysetmcontext(const ulong*);

 36 9cf92718 2011-05-18 rsc #define	setcontext(u)	mysetmcontext(&(u)->uc_mcontext.arm_r0)

 37 9cf92718 2011-05-18 rsc #define	getcontext(u)	mygetmcontext(&(u)->uc_mcontext.arm_r0)

 38 33a102fc 2005-11-04 devnull #endif

 39 33a102fc 2005-11-04 devnull 

 40 17558fbe 2006-06-04 devnull 

 41 619085f0 2004-12-25 devnull typedef struct Context Context;

 42 e127e40b 2004-12-27 devnull typedef struct Execjob Execjob;

 43 619085f0 2004-12-25 devnull typedef struct Proc Proc;

 44 619085f0 2004-12-25 devnull typedef struct _Procrendez _Procrendez;

 45 619085f0 2004-12-25 devnull 

 46 e1dc7e45 2004-12-27 devnull typedef struct Jmp Jmp;

 47 e1dc7e45 2004-12-27 devnull struct Jmp

 48 e1dc7e45 2004-12-27 devnull {

 49 e1dc7e45 2004-12-27 devnull 	p9jmp_buf b;

 50 e1dc7e45 2004-12-27 devnull };

 51 e1dc7e45 2004-12-27 devnull 

 52 619085f0 2004-12-25 devnull enum

 53 619085f0 2004-12-25 devnull {

 54 619085f0 2004-12-25 devnull 	STACK = 8192

 55 619085f0 2004-12-25 devnull };

 56 619085f0 2004-12-25 devnull 

 57 619085f0 2004-12-25 devnull struct Context

 58 619085f0 2004-12-25 devnull {

 59 619085f0 2004-12-25 devnull 	ucontext_t	uc;

 60 619085f0 2004-12-25 devnull };

 61 619085f0 2004-12-25 devnull 

 62 e127e40b 2004-12-27 devnull struct Execjob

 63 e127e40b 2004-12-27 devnull {

 64 e127e40b 2004-12-27 devnull 	int *fd;

 65 e127e40b 2004-12-27 devnull 	char *cmd;

 66 e127e40b 2004-12-27 devnull 	char **argv;

 67 9e4b56e7 2012-10-22 rsc 	char *dir;

 68 e127e40b 2004-12-27 devnull 	Channel *c;

 69 e127e40b 2004-12-27 devnull };

 70 e127e40b 2004-12-27 devnull 

 71 baef953d 2020-05-18 rsc struct _Procrendez

 72 baef953d 2020-05-18 rsc {

 73 baef953d 2020-05-18 rsc 	Lock		*l;

 74 baef953d 2020-05-18 rsc 	int		asleep;

 75 baef953d 2020-05-18 rsc #ifdef PLAN9PORT_USING_PTHREADS

 76 baef953d 2020-05-18 rsc 	pthread_cond_t	cond;

 77 baef953d 2020-05-18 rsc #else

 78 baef953d 2020-05-18 rsc 	int		pid;

 79 baef953d 2020-05-18 rsc #endif

 80 baef953d 2020-05-18 rsc };

 81 baef953d 2020-05-18 rsc 

 82 619085f0 2004-12-25 devnull struct _Thread

 83 619085f0 2004-12-25 devnull {

 84 619085f0 2004-12-25 devnull 	_Thread	*next;

 85 619085f0 2004-12-25 devnull 	_Thread	*prev;

 86 619085f0 2004-12-25 devnull 	_Thread	*allnext;

 87 619085f0 2004-12-25 devnull 	_Thread	*allprev;

 88 619085f0 2004-12-25 devnull 	Context	context;

 89 fc567f47 2011-08-02 rsc 	void	(*startfn)(void*);

 90 fc567f47 2011-08-02 rsc 	void	*startarg;

 91 619085f0 2004-12-25 devnull 	uint	id;

 92 baef953d 2020-05-18 rsc #ifdef PLAN9PORT_USING_PTHREADS

 93 baef953d 2020-05-18 rsc 	pthread_t	osprocid;

 94 baef953d 2020-05-18 rsc #else

 95 baef953d 2020-05-18 rsc 	int		osprocid;

 96 baef953d 2020-05-18 rsc #endif

 97 619085f0 2004-12-25 devnull 	uchar	*stk;

 98 619085f0 2004-12-25 devnull 	uint	stksize;

 99 619085f0 2004-12-25 devnull 	int		exiting;

100 619085f0 2004-12-25 devnull 	Proc	*proc;

101 619085f0 2004-12-25 devnull 	char	name[256];

102 619085f0 2004-12-25 devnull 	char	state[256];

103 8dd8a81f 2005-03-18 devnull 	void *udata;

104 47ede89e 2007-08-22 rsc 	Alt	*alt;

105 baef953d 2020-05-18 rsc 	_Procrendez schedrend;

106 619085f0 2004-12-25 devnull };

107 619085f0 2004-12-25 devnull 

108 619085f0 2004-12-25 devnull extern	void	_procsleep(_Procrendez*);

109 619085f0 2004-12-25 devnull extern	void	_procwakeup(_Procrendez*);

110 a0a331aa 2005-01-06 devnull extern	void	_procwakeupandunlock(_Procrendez*);

111 619085f0 2004-12-25 devnull 

112 619085f0 2004-12-25 devnull struct Proc

113 619085f0 2004-12-25 devnull {

114 4dbefdd4 2004-12-27 devnull 	Proc		*next;

115 4dbefdd4 2004-12-27 devnull 	Proc		*prev;

116 4dbefdd4 2004-12-27 devnull 	char		msg[128];

117 4dbefdd4 2004-12-27 devnull #ifdef PLAN9PORT_USING_PTHREADS

118 4dbefdd4 2004-12-27 devnull 	pthread_t	osprocid;

119 4dbefdd4 2004-12-27 devnull #else

120 669a062b 2005-01-30 devnull 	int		osprocid;

121 4dbefdd4 2004-12-27 devnull #endif

122 619085f0 2004-12-25 devnull 	Lock		lock;

123 8cbd854a 2004-12-27 devnull 	int			nswitch;

124 baef953d 2020-05-18 rsc 	_Thread		*thread0;

125 619085f0 2004-12-25 devnull 	_Thread		*thread;

126 ff63eeb1 2006-06-26 devnull 	_Thread		*pinthread;

127 619085f0 2004-12-25 devnull 	_Threadlist	runqueue;

128 615e0f9f 2006-02-07 devnull 	_Threadlist	idlequeue;

129 619085f0 2004-12-25 devnull 	_Threadlist	allthreads;

130 619085f0 2004-12-25 devnull 	uint		nthread;

131 619085f0 2004-12-25 devnull 	uint		sysproc;

132 619085f0 2004-12-25 devnull 	_Procrendez	runrend;

133 baef953d 2020-05-18 rsc 	Lock		schedlock;

134 baef953d 2020-05-18 rsc 	_Thread	*schedthread;

135 619085f0 2004-12-25 devnull 	Context	schedcontext;

136 619085f0 2004-12-25 devnull 	void		*udata;

137 e1dc7e45 2004-12-27 devnull 	Jmp		sigjmp;

138 8ee6ad4d 2005-02-14 devnull 	int		mainproc;

139 619085f0 2004-12-25 devnull };

140 619085f0 2004-12-25 devnull 

141 619085f0 2004-12-25 devnull #define proc() _threadproc()

142 619085f0 2004-12-25 devnull 

143 4dbefdd4 2004-12-27 devnull extern Proc *_threadprocs;

144 4dbefdd4 2004-12-27 devnull extern Lock _threadprocslock;

145 955a2ca7 2004-12-27 devnull extern Proc *_threadexecproc;

146 955a2ca7 2004-12-27 devnull extern Channel *_threadexecchan;

147 955a2ca7 2004-12-27 devnull extern QLock _threadexeclock;

148 955a2ca7 2004-12-27 devnull extern Channel *_dowaitchan;

149 4dbefdd4 2004-12-27 devnull 

150 73722a8b 2004-12-27 devnull extern void _procstart(Proc*, void (*fn)(Proc*));

151 619085f0 2004-12-25 devnull extern _Thread *_threadcreate(Proc*, void(*fn)(void*), void*, uint);

152 481b596d 2020-01-14 rsc extern void _procexit(void);

153 619085f0 2004-12-25 devnull extern Proc *_threadproc(void);

154 619085f0 2004-12-25 devnull extern void _threadsetproc(Proc*);

155 619085f0 2004-12-25 devnull extern int _threadlock(Lock*, int, ulong);

156 619085f0 2004-12-25 devnull extern void _threadunlock(Lock*, ulong);

157 e1dc7e45 2004-12-27 devnull extern void _pthreadinit(void);

158 9e4b56e7 2012-10-22 rsc extern int _threadspawn(int*, char*, char**, char*);

159 9e4b56e7 2012-10-22 rsc extern int _runthreadspawn(int*, char*, char**, char*);

160 2c87dda8 2004-12-28 devnull extern void _threadsetupdaemonize(void);

161 2c87dda8 2004-12-28 devnull extern void _threaddodaemonize(char*);

162 1d2533d0 2004-12-28 devnull extern void _threadpexit(void);

163 c7acb53e 2005-01-04 devnull extern void _threaddaemonize(void);

164 8c573cab 2020-01-14 rsc extern void *_threadstkalloc(int);

165 8c573cab 2020-01-14 rsc extern void _threadstkfree(void*, int);

166 baef953d 2020-05-18 rsc extern void _threadpthreadmain(Proc*, _Thread*);

167 baef953d 2020-05-18 rsc extern void _threadpthreadstart(Proc*, _Thread*);

168 41b3e8b9 2020-01-20 rsc 

169 41b3e8b9 2020-01-20 rsc #define USPALIGN(ucp, align) \

170 41b3e8b9 2020-01-20 rsc 	(void*)((((uintptr)(ucp)->uc_stack.ss_sp+(ucp)->uc_stack.ss_size)-(align))&~((align)-1))