libtask/taskimpl.h at master · jamwt/libtask · GitHub

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/* Copyright (c) 2005-2006 Russ Cox, MIT; see COPYRIGHT */

#if defined(__sun__)
#	define__EXTENSIONS__ 1 /* SunOS */
#	if defined(__SunOS5_6__) || defined(__SunOS5_7__) || defined(__SunOS5_8__)
/* NOT USING #define __MAKECONTEXT_V2_SOURCE 1 / * SunOS */
#	else
# define__MAKECONTEXT_V2_SOURCE 1
#	endif
#endif

#defineUSE_UCONTEXT 1

#if defined(__OpenBSD__) || defined(__mips__)
#undef USE_UCONTEXT
#defineUSE_UCONTEXT 0
#endif

#if defined(__APPLE__)
#include<AvailabilityMacros.h>
#if defined(MAC_OS_X_VERSION_10_5)
#undef USE_UCONTEXT
#defineUSE_UCONTEXT 0
#endif
#endif

#include<errno.h>
#include<stdlib.h>
#include<unistd.h>
#include<string.h>
#include<assert.h>
#include<time.h>
#include<sys/time.h>
#include<sys/types.h>
#include<sys/wait.h>
#include<sched.h>
#include<signal.h>
#ifUSE_UCONTEXT
#include<ucontext.h>
#endif
#include<sys/utsname.h>
#include<inttypes.h>
#include"task.h"

#definenil ((void*)0)
#definenelem(x) (sizeof(x)/sizeof((x)[0]))

#defineulong task_ulong
#defineuint task_uint
#defineuchar task_uchar
#defineushort task_ushort
#defineuvlong task_uvlong
#definevlong task_vlong

typedefunsigned longulong;
typedefunsigned intuint;
typedefunsigned charuchar;
typedefunsigned shortushort;
typedefunsigned long longuvlong;
typedeflong longvlong;

#defineprint task_print
#definefprint task_fprint
#definesnprint task_snprint
#defineseprint task_seprint
#definevprint task_vprint
#definevfprint task_vfprint
#definevsnprint task_vsnprint
#definevseprint task_vseprint
#definestrecpy task_strecpy

intprint(char*, ...);
intfprint(int, char*, ...);
char*snprint(char*, uint, char*, ...);
char*seprint(char*, char*, char*, ...);
intvprint(char*, va_list);
intvfprint(int, char*, va_list);
char*vsnprint(char*, uint, char*, va_list);
char*vseprint(char*, char*, char*, va_list);
char*strecpy(char*, char*, char*);

#if defined(__FreeBSD__) &&__FreeBSD__<5
externintgetmcontext(mcontext_t*);
externvoidsetmcontext(constmcontext_t*);
#definesetcontext(u)	setmcontext(&(u)->uc_mcontext)
#definegetcontext(u)	getmcontext(&(u)->uc_mcontext)
externintswapcontext(ucontext_t*, constucontext_t*);
externvoidmakecontext(ucontext_t*, void(*)(), int, ...);
#endif

#if defined(__APPLE__)
#	definemcontext libthread_mcontext
#	definemcontext_t libthread_mcontext_t
#	defineucontext libthread_ucontext
#	defineucontext_t libthread_ucontext_t
#	if defined(__i386__)
# include"386-ucontext.h"
#	elif defined(__x86_64__)
# include"amd64-ucontext.h"
#	else
# include"power-ucontext.h"
#	endif
#endif

#if defined(__OpenBSD__)
#	definemcontext libthread_mcontext
#	definemcontext_t libthread_mcontext_t
#	defineucontext libthread_ucontext
#	defineucontext_t libthread_ucontext_t
#	if defined __i386__
# include"386-ucontext.h"
#	else
# include"power-ucontext.h"
#	endif
externpid_trfork_thread(int, void*, int(*)(void*), void*);
#endif

#if0&& defined(__sun__)
#	definemcontext libthread_mcontext
#	definemcontext_t libthread_mcontext_t
#	defineucontext libthread_ucontext
#	defineucontext_t libthread_ucontext_t
#	include"sparc-ucontext.h"
#endif

#if defined(__arm__)
intgetmcontext(mcontext_t*);
voidsetmcontext(constmcontext_t*);
#definesetcontext(u)	setmcontext(&(u)->uc_mcontext)
#definegetcontext(u)	getmcontext(&(u)->uc_mcontext)
#endif

#if defined(__mips__)
#include"mips-ucontext.h"
intgetmcontext(mcontext_t*);
voidsetmcontext(constmcontext_t*);
#definesetcontext(u)	setmcontext(&(u)->uc_mcontext)
#definegetcontext(u)	getmcontext(&(u)->uc_mcontext)
#endif

typedefstructContextContext;

enum
{
STACK=8192
};

structContext
{
ucontext_tuc;
};

structTask
{
charname[256];	// offset known to acid
charstate[256];
Task*next;
Task*prev;
Task*allnext;
Task*allprev;
Contextcontext;
uvlongalarmtime;
uintid;
uchar*stk;
uintstksize;
intexiting;
intalltaskslot;
intsystem;
intready;
void	(*startfn)(void*);
void*startarg;
void*udata;
};

voidtaskready(Task*);
voidtaskswitch(void);

voidaddtask(Tasklist*, Task*);
voiddeltask(Tasklist*, Task*);

externTask*taskrunning;
externinttaskcount;