_solaris.h

Netscape NSPR库源码

};

#define _PR_IOQ(_cpu)			((_cpu)->md.md_unix.ioQ)
#define _PR_ADD_TO_IOQ(_pq, _cpu) PR_APPEND_LINK(&_pq.links, &_PR_IOQ(_cpu))
#define _PR_FD_READ_SET(_cpu)		((_cpu)->md.md_unix.fd_read_set)
#define _PR_FD_READ_CNT(_cpu)		((_cpu)->md.md_unix.fd_read_cnt)
#define _PR_FD_WRITE_SET(_cpu)		((_cpu)->md.md_unix.fd_write_set)
#define _PR_FD_WRITE_CNT(_cpu)		((_cpu)->md.md_unix.fd_write_cnt)
#define _PR_FD_EXCEPTION_SET(_cpu)	((_cpu)->md.md_unix.fd_exception_set)
#define _PR_FD_EXCEPTION_CNT(_cpu)	((_cpu)->md.md_unix.fd_exception_cnt)
#define _PR_IOQ_TIMEOUT(_cpu)		((_cpu)->md.md_unix.ioq_timeout)
#define _PR_IOQ_MAX_OSFD(_cpu)		((_cpu)->md.md_unix.ioq_max_osfd)
#define _PR_IOQ_OSFD_CNT(_cpu)		((_cpu)->md.md_unix.ioq_osfd_cnt)
#define _PR_IOQ_POLLFDS(_cpu)		((_cpu)->md.md_unix.ioq_pollfds)
#define _PR_IOQ_POLLFDS_SIZE(_cpu)	((_cpu)->md.md_unix.ioq_pollfds_size)

#define _PR_IOQ_MIN_POLLFDS_SIZE(_cpu)	32


struct _MDCPU {
	struct _MDCPU_Unix md_unix;
};

/* The following defines the unwrapped versions of select() and poll(). */
extern int _select(int nfds, fd_set *readfds, fd_set *writefds,
	fd_set *exceptfds, struct timeval *timeout);
#define _MD_SELECT	_select

#include <poll.h>
#define _MD_POLL _poll
extern int _poll(struct pollfd *fds, unsigned long nfds, int timeout);

PR_BEGIN_EXTERN_C

/*
** Missing function prototypes
*/
extern int gethostname (char *name, int namelen);

PR_END_EXTERN_C

#else /* _PR_GLOBAL_THREADS_ONLY */

/*
 * LOCAL_THREADS_ONLY implementation on Solaris
 */

#include "prthread.h"

#include <errno.h>
#include <ucontext.h>
#include <sys/stack.h>
#include <synch.h>

/*
** Iinitialization Related definitions
*/

NSPR_API(void)				_MD_EarlyInit(void);
NSPR_API(void)				_MD_SolarisInit();
#define _MD_EARLY_INIT		_MD_EarlyInit
#define _MD_FINAL_INIT		_MD_SolarisInit
#define	_MD_INIT_THREAD		_MD_InitializeThread

#ifdef USE_SETJMP

#include <setjmp.h>

#define _PR_CONTEXT_TYPE	jmp_buf

#ifdef sparc
#define _MD_GET_SP(_t)		(_t)->md.context[2]
#else
#define _MD_GET_SP(_t)		(_t)->md.context[4]
#endif

#define PR_NUM_GCREGS		_JBLEN
#define CONTEXT(_thread)	(_thread)->md.context

#else  /* ! USE_SETJMP */

#ifdef sparc
#define	_PR_CONTEXT_TYPE	ucontext_t
#define _MD_GET_SP(_t)		(_t)->md.context.uc_mcontext.gregs[REG_SP]
/*
** Sparc's use register windows. the _MD_GetRegisters for the sparc's
** doesn't actually store anything into the argument buffer; instead the
** register windows are homed to the stack. I assume that the stack
** always has room for the registers to spill to...
*/
#define PR_NUM_GCREGS		0
#else
#define _PR_CONTEXT_TYPE	unsigned int edi; sigset_t oldMask, blockMask; ucontext_t
#define _MD_GET_SP(_t)		(_t)->md.context.uc_mcontext.gregs[USP]
#define PR_NUM_GCREGS		_JBLEN
#endif

#define CONTEXT(_thread)	(&(_thread)->md.context)

#endif /* ! USE_SETJMP */

#include <time.h>
/* 
 * Because clock_gettime() on Solaris/x86 always generates a
 * segmentation fault, we use an emulated version _pr_solx86_clock_gettime(),
 * which is implemented using gettimeofday().
 */
#ifdef i386
#define GETTIME(tt) _pr_solx86_clock_gettime(CLOCK_REALTIME, (tt))
#else
#define GETTIME(tt) clock_gettime(CLOCK_REALTIME, (tt))
#endif  /* i386 */

#define _MD_SAVE_ERRNO(_thread)			(_thread)->md.errcode = errno;
#define _MD_RESTORE_ERRNO(_thread)		errno = (_thread)->md.errcode;

#ifdef sparc

#ifdef USE_SETJMP
#define _MD_INIT_CONTEXT(_thread, _sp, _main, status)	      \
    PR_BEGIN_MACRO				      \
	int *context = (_thread)->md.context;	      \
    *status = PR_TRUE;              \
	(void) setjmp(context);			      \
	(_thread)->md.context[1] = (int) ((_sp) - 64); \
	(_thread)->md.context[2] = (int) _main;	      \
	(_thread)->md.context[3] = (int) _main + 4; \
    _thread->no_sched = 0; \
    PR_END_MACRO

#define _MD_SWITCH_CONTEXT(_thread)    \
    if (!setjmp(CONTEXT(_thread))) { \
	_MD_SAVE_ERRNO(_thread)    \
	_MD_SET_LAST_THREAD(_thread);	 \
    _MD_SET_CURRENT_THREAD(_thread);	 \
	_PR_Schedule();		     \
    }

#define _MD_RESTORE_CONTEXT(_newThread)	    \
{				     \
	_MD_RESTORE_ERRNO(_newThread)	    \
	_MD_SET_CURRENT_THREAD(_newThread); \
    longjmp(CONTEXT(_newThread), 1);    \
}

#else
/*
** Initialize the thread context preparing it to execute _main.
*/
#define _MD_INIT_CONTEXT(_thread, _sp, _main, status)					\
    PR_BEGIN_MACRO				      									\
    ucontext_t *uc = CONTEXT(_thread);									\
    *status = PR_TRUE;													\
    getcontext(uc);														\
    uc->uc_stack.ss_sp = (char *) ((unsigned long)(_sp - WINDOWSIZE - SA(MINFRAME)) & 0xfffffff8);	\
    uc->uc_stack.ss_size = _thread->stack->stackSize; 					\
    uc->uc_stack.ss_flags = 0; 				/* ? */		        		\
    uc->uc_mcontext.gregs[REG_SP] = (unsigned int) uc->uc_stack.ss_sp;	\
    uc->uc_mcontext.gregs[REG_PC] = (unsigned int) _main;				\
    uc->uc_mcontext.gregs[REG_nPC] = (unsigned int) ((char*)_main)+4;	\
    uc->uc_flags = UC_ALL;												\
    _thread->no_sched = 0;												\
    PR_END_MACRO

/*
** Switch away from the current thread context by saving its state and
** calling the thread scheduler. Reload cpu when we come back from the
** context switch because it might have changed.
*/
#define _MD_SWITCH_CONTEXT(_thread)    				\
    PR_BEGIN_MACRO                     				\
		if (!getcontext(CONTEXT(_thread))) { 		\
			_MD_SAVE_ERRNO(_thread);    			\
			_MD_SET_LAST_THREAD(_thread);	 		\
			_PR_Schedule();			 				\
		}					 						\
    PR_END_MACRO

/*
** Restore a thread context that was saved by _MD_SWITCH_CONTEXT or
** initialized by _MD_INIT_CONTEXT.
*/
#define _MD_RESTORE_CONTEXT(_newThread)	    				\
    PR_BEGIN_MACRO			    							\
    	ucontext_t *uc = CONTEXT(_newThread); 				\
    	uc->uc_mcontext.gregs[11] = 1;     					\
		_MD_RESTORE_ERRNO(_newThread);	    				\
		_MD_SET_CURRENT_THREAD(_newThread); 				\
    	setcontext(uc);		       							\
    PR_END_MACRO
#endif

#else  /* x86 solaris */

#ifdef USE_SETJMP

#define _MD_INIT_CONTEXT(_thread, _sp, _main, status) \
    PR_BEGIN_MACRO \
    *status = PR_TRUE; \
    if (setjmp(CONTEXT(_thread))) _main(); \
    _MD_GET_SP(_thread) = (int) ((_sp) - 64); \
    PR_END_MACRO

#define _MD_SWITCH_CONTEXT(_thread) \
    if (!setjmp(CONTEXT(_thread))) { \
        _MD_SAVE_ERRNO(_thread) \
        _PR_Schedule();	\
    }

#define _MD_RESTORE_CONTEXT(_newThread) \
{ \
    _MD_RESTORE_ERRNO(_newThread) \
    _MD_SET_CURRENT_THREAD(_newThread); \
    longjmp(CONTEXT(_newThread), 1); \
}

#else /* USE_SETJMP */

#define WINDOWSIZE		0
 
int getedi(void);
void setedi(int);
 
#define _MD_INIT_CONTEXT(_thread, _sp, _main, status)	      \
	PR_BEGIN_MACRO					\
	ucontext_t *uc = CONTEXT(_thread);		\
        *status = PR_TRUE;              \
	getcontext(uc);					\
	/* Force sp to be double aligned! */		\
    	uc->uc_mcontext.gregs[USP] = (int) ((unsigned long)(_sp - WINDOWSIZE - SA(MINFRAME)) & 0xfffffff8);	\
	uc->uc_mcontext.gregs[PC] = (int) _main;	\
	(_thread)->no_sched = 0; \
	PR_END_MACRO

/* getcontext() may return 1, contrary to what the man page says */
#define _MD_SWITCH_CONTEXT(_thread)			\
	PR_BEGIN_MACRO					\
	ucontext_t *uc = CONTEXT(_thread);		\
	PR_ASSERT(_thread->no_sched);			\
	sigfillset(&((_thread)->md.blockMask));		\
	sigprocmask(SIG_BLOCK, &((_thread)->md.blockMask),	\
		&((_thread)->md.oldMask));		\
	(_thread)->md.edi = getedi();			\
	if (! getcontext(uc)) {				\
		sigprocmask(SIG_SETMASK, &((_thread)->md.oldMask), NULL); \
		uc->uc_mcontext.gregs[EDI] = (_thread)->md.edi;	\
		_MD_SAVE_ERRNO(_thread)    		\
	        _MD_SET_LAST_THREAD(_thread);	        \
		_PR_Schedule();				\
	} else {					\
		sigprocmask(SIG_SETMASK, &((_thread)->md.oldMask), NULL); \
		setedi((_thread)->md.edi);		\
		PR_ASSERT(_MD_LAST_THREAD() !=_MD_CURRENT_THREAD()); \
		_MD_LAST_THREAD()->no_sched = 0;	\
	}						\
	PR_END_MACRO

/*
** Restore a thread context, saved by _PR_SWITCH_CONTEXT
*/
#define _MD_RESTORE_CONTEXT(_newthread)			\
	PR_BEGIN_MACRO					\
	ucontext_t *uc = CONTEXT(_newthread);		\
	uc->uc_mcontext.gregs[EAX] = 1;			\
	_MD_RESTORE_ERRNO(_newthread)  			\
	_MD_SET_CURRENT_THREAD(_newthread);		\
	(_newthread)->no_sched = 1;			\
	setcontext(uc);					\
	PR_END_MACRO
#endif /* USE_SETJMP */

#endif /* sparc */

struct _MDLock {
	PRInt8 notused;
};

struct _MDCVar {
	PRInt8 notused;
};

struct _MDSemaphore {
	PRInt8 notused;
};

struct _MDThread {
    _PR_CONTEXT_TYPE context;
    int errcode;
    int id;
};

struct _MDThreadStack {
    PRInt8 notused;
};

struct _MDSegment {
    PRInt8 notused;
};

/*
 * md-specific cpu structure field
 */
#define _PR_MD_MAX_OSFD FD_SETSIZE

struct _MDCPU_Unix {
    PRCList ioQ;
    PRUint32 ioq_timeout;
    PRInt32 ioq_max_osfd;
    PRInt32 ioq_osfd_cnt;
#ifndef _PR_USE_POLL
    fd_set fd_read_set, fd_write_set, fd_exception_set;
    PRInt16 fd_read_cnt[_PR_MD_MAX_OSFD],fd_write_cnt[_PR_MD_MAX_OSFD],
				fd_exception_cnt[_PR_MD_MAX_OSFD];
#else
	struct pollfd *ioq_pollfds;
	int ioq_pollfds_size;
#endif	/* _PR_USE_POLL */
};

#define _PR_IOQ(_cpu)			((_cpu)->md.md_unix.ioQ)
#define _PR_ADD_TO_IOQ(_pq, _cpu) PR_APPEND_LINK(&_pq.links, &_PR_IOQ(_cpu))
#define _PR_FD_READ_SET(_cpu)		((_cpu)->md.md_unix.fd_read_set)
#define _PR_FD_READ_CNT(_cpu)		((_cpu)->md.md_unix.fd_read_cnt)
#define _PR_FD_WRITE_SET(_cpu)		((_cpu)->md.md_unix.fd_write_set)
#define _PR_FD_WRITE_CNT(_cpu)		((_cpu)->md.md_unix.fd_write_cnt)
#define _PR_FD_EXCEPTION_SET(_cpu)	((_cpu)->md.md_unix.fd_exception_set)
#define _PR_FD_EXCEPTION_CNT(_cpu)	((_cpu)->md.md_unix.fd_exception_cnt)
#define _PR_IOQ_TIMEOUT(_cpu)		((_cpu)->md.md_unix.ioq_timeout)
#define _PR_IOQ_MAX_OSFD(_cpu)		((_cpu)->md.md_unix.ioq_max_osfd)
#define _PR_IOQ_OSFD_CNT(_cpu)		((_cpu)->md.md_unix.ioq_osfd_cnt)
#define _PR_IOQ_POLLFDS(_cpu)		((_cpu)->md.md_unix.ioq_pollfds)
#define _PR_IOQ_POLLFDS_SIZE(_cpu)	((_cpu)->md.md_unix.ioq_pollfds_size)

#define _PR_IOQ_MIN_POLLFDS_SIZE(_cpu)	32

struct _MDCPU {
	struct _MDCPU_Unix md_unix;
};

#ifndef _PR_PTHREADS
#define _MD_INIT_LOCKS()
#endif
#define _MD_NEW_LOCK(lock)				PR_SUCCESS
#define _MD_FREE_LOCK(lock)
#define _MD_LOCK(lock)
#define _MD_UNLOCK(lock)
#define _MD_INIT_IO()
#define _MD_IOQ_LOCK()
#define _MD_IOQ_UNLOCK()

#define _MD_INIT_RUNNING_CPU(cpu)		_MD_unix_init_running_cpu(cpu)
#define _MD_INIT_THREAD					_MD_InitializeThread
#define _MD_EXIT_THREAD(thread)
#define _MD_SUSPEND_THREAD(thread)
#define _MD_RESUME_THREAD(thread)
#define _MD_CLEAN_THREAD(_thread)

extern PRStatus _MD_WAIT(struct PRThread *, PRIntervalTime timeout);
extern PRStatus _MD_WAKEUP_WAITER(struct PRThread *);
extern void     _MD_YIELD(void);
extern PRStatus _MD_InitializeThread(PRThread *thread);
extern void     _MD_SET_PRIORITY(struct _MDThread *thread,
	PRThreadPriority newPri);
extern PRStatus _MD_CREATE_THREAD(PRThread *thread, void (*start) (void *),
	PRThreadPriority priority, PRThreadScope scope, PRThreadState state,
        PRUint32 stackSize);

NSPR_API(PRIntervalTime)				_MD_Solaris_GetInterval(void);
#define _MD_GET_INTERVAL				_MD_Solaris_GetInterval
NSPR_API(PRIntervalTime)				_MD_Solaris_TicksPerSecond(void);
#define _MD_INTERVAL_PER_SEC			_MD_Solaris_TicksPerSecond

/* The following defines the unwrapped versions of select() and poll(). */
extern int _select(int nfds, fd_set *readfds, fd_set *writefds,
	fd_set *exceptfds, struct timeval *timeout);
#define _MD_SELECT	_select

#include <stropts.h>
#include <poll.h>
#define _MD_POLL _poll
extern int _poll(struct pollfd *fds, unsigned long nfds, int timeout);

PR_BEGIN_EXTERN_C

/*
** Missing function prototypes
*/
extern int gethostname (char *name, int namelen);

PR_END_EXTERN_C

#endif /* _PR_GLOBAL_THREADS_ONLY */

extern void _MD_solaris_map_sendfile_error(int err);

#endif /* nspr_solaris_defs_h___ */