_solaris.h

Netscape NSPR库源码

/* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
/* 
 * The contents of this file are subject to the Mozilla Public
 * License Version 1.1 (the "License"); you may not use this file
 * except in compliance with the License. You may obtain a copy of
 * the License at http://www.mozilla.org/MPL/
 * 
 * Software distributed under the License is distributed on an "AS
 * IS" basis, WITHOUT WARRANTY OF ANY KIND, either express or
 * implied. See the License for the specific language governing
 * rights and limitations under the License.
 * 
 * The Original Code is the Netscape Portable Runtime (NSPR).
 * 
 * The Initial Developer of the Original Code is Netscape
 * Communications Corporation.  Portions created by Netscape are 
 * Copyright (C) 1998-2000 Netscape Communications Corporation.  All
 * Rights Reserved.
 * 
 * Contributor(s):
 * 
 * Alternatively, the contents of this file may be used under the
 * terms of the GNU General Public License Version 2 or later (the
 * "GPL"), in which case the provisions of the GPL are applicable 
 * instead of those above.  If you wish to allow use of your 
 * version of this file only under the terms of the GPL and not to
 * allow others to use your version of this file under the MPL,
 * indicate your decision by deleting the provisions above and
 * replace them with the notice and other provisions required by
 * the GPL.  If you do not delete the provisions above, a recipient
 * may use your version of this file under either the MPL or the
 * GPL.
 */

#ifndef nspr_solaris_defs_h___
#define nspr_solaris_defs_h___

/*
 * Internal configuration macros
 */

#define PR_LINKER_ARCH	"solaris"
#define _PR_SI_SYSNAME	"SOLARIS"
#ifdef sparc
#define _PR_SI_ARCHITECTURE	"sparc"
#elif defined(i386)
#define _PR_SI_ARCHITECTURE	"x86"
#else
#error unknown processor
#endif
#define PR_DLL_SUFFIX		".so"

#define _PR_VMBASE		0x30000000
#define _PR_STACK_VMBASE	0x50000000
#define _MD_DEFAULT_STACK_SIZE	(2*65536L)
#define _MD_MMAP_FLAGS          MAP_SHARED

#undef  HAVE_STACK_GROWING_UP

#ifndef HAVE_WEAK_IO_SYMBOLS
#define	HAVE_WEAK_IO_SYMBOLS
#endif

#undef	HAVE_WEAK_MALLOC_SYMBOLS
#define	HAVE_DLL
#define	USE_DLFCN
#define NEED_STRFTIME_LOCK

/*
 * Intel x86 has atomic instructions.
 *
 * Sparc v8 does not have instructions to efficiently implement
 * atomic increment/decrement operations.  In the local threads
 * only and pthreads versions, we use the default atomic routine
 * implementation in pratom.c.  The obsolete global threads only
 * version uses a global mutex_t to implement the atomic routines
 * in solaris.c, which is actually equivalent to the default
 * implementation.
 *
 * 64-bit Solaris requires sparc v9, which has atomic instructions.
 */
#if defined(i386) || defined(_PR_GLOBAL_THREADS_ONLY) || defined(IS_64)
#define _PR_HAVE_ATOMIC_OPS
#endif

#if defined(_PR_GLOBAL_THREADS_ONLY) || defined(_PR_PTHREADS)
/*
 * We have assembly language implementation of atomic
 * stacks for the 32-bit sparc and x86 architectures only.
 *
 * Note: We ran into thread starvation problem with the
 * 32-bit sparc assembly language implementation of atomic
 * stacks, so we do not use it now. (Bugzilla bug 113740)
 */
#if !defined(sparc)
#define _PR_HAVE_ATOMIC_CAS
#endif
#endif

#define _PR_POLL_AVAILABLE
#define _PR_USE_POLL
#define _PR_STAT_HAS_ST_ATIM
#ifdef SOLARIS2_5
#define _PR_HAVE_SYSV_SEMAPHORES
#define PR_HAVE_SYSV_NAMED_SHARED_MEMORY
#else
#define _PR_HAVE_POSIX_SEMAPHORES
#define PR_HAVE_POSIX_NAMED_SHARED_MEMORY
#endif
#define _PR_HAVE_GETIPNODEBYNAME
#define _PR_HAVE_GETIPNODEBYADDR
#define _PR_INET6_PROBE
#define _PR_ACCEPT_INHERIT_NONBLOCK
#ifndef _PR_INET6
#define AF_INET6 26
#define AI_V4MAPPED 0x0001 
#define AI_ALL      0x0002
#define AI_ADDRCONFIG   0x0004
#define _PR_HAVE_MD_SOCKADDR_IN6
/* isomorphic to struct in6_addr on Solaris 8 */
struct _md_in6_addr {
    union {
        PRUint8  _S6_u8[16];
        PRUint32 _S6_u32[4];
        PRUint32 __S6_align;
    } _S6_un;
};
/* isomorphic to struct sockaddr_in6 on Solaris 8 */
struct _md_sockaddr_in6 {
    PRUint16 sin6_family;
    PRUint16 sin6_port;
    PRUint32 sin6_flowinfo;
    struct _md_in6_addr sin6_addr;
    PRUint32 sin6_scope_id;
    PRUint32 __sin6_src_id;
};
#endif
#if defined(_PR_GLOBAL_THREADS_ONLY) || defined(_PR_PTHREADS)
#define _PR_HAVE_GETHOST_R
#define _PR_HAVE_GETHOST_R_POINTER
#endif

#include "prinrval.h"
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

#if defined(_PR_HAVE_ATOMIC_OPS)
/*
** Atomic Operations
*/
#define _MD_INIT_ATOMIC()

NSPR_API(PRInt32) _MD_AtomicIncrement(PRInt32 *val);
#define _MD_ATOMIC_INCREMENT _MD_AtomicIncrement

NSPR_API(PRInt32) _MD_AtomicAdd(PRInt32 *ptr, PRInt32 val);
#define _MD_ATOMIC_ADD _MD_AtomicAdd

NSPR_API(PRInt32) _MD_AtomicDecrement(PRInt32 *val);
#define _MD_ATOMIC_DECREMENT _MD_AtomicDecrement

NSPR_API(PRInt32) _MD_AtomicSet(PRInt32 *val, PRInt32 newval);
#define _MD_ATOMIC_SET _MD_AtomicSet
#endif /* _PR_HAVE_ATOMIC_OPS */

#if defined(_PR_PTHREADS)

NSPR_API(void)		_MD_EarlyInit(void);

#define _MD_EARLY_INIT		_MD_EarlyInit
#define _MD_FINAL_INIT		_PR_UnixInit

#elif defined(_PR_GLOBAL_THREADS_ONLY)

#include "prthread.h"

#include <ucontext.h>

/*
** Iinitialization Related definitions
*/

NSPR_API(void)		_MD_EarlyInit(void);

#define _MD_EARLY_INIT		_MD_EarlyInit
#define _MD_FINAL_INIT		_PR_UnixInit

#define _MD_GET_SP(threadp)	threadp->md.sp

/*
** Clean-up the thread machine dependent data structure
*/
#define	_MD_INIT_THREAD				_MD_InitializeThread
#define	_MD_INIT_ATTACHED_THREAD	_MD_InitializeThread

NSPR_API(PRStatus) _MD_CreateThread(PRThread *thread, 
					void (*start)(void *), 
					PRThreadPriority priority,
					PRThreadScope scope, 
					PRThreadState state, 
					PRUint32 stackSize);
#define _MD_CREATE_THREAD _MD_CreateThread

#define	_PR_CONTEXT_TYPE	ucontext_t

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

#include <thread.h>
#include <sys/lwp.h>
#include <synch.h>

extern struct PRLock *_pr_schedLock;

/*
** Thread Local Storage 
*/

#define THREAD_KEY_T thread_key_t

extern struct PRThread *_pr_current_thread_tls();
extern struct _PRCPU *_pr_current_cpu_tls();
extern struct PRThread *_pr_last_thread_tls();

extern THREAD_KEY_T threadid_key;
extern THREAD_KEY_T cpuid_key;
extern THREAD_KEY_T last_thread_key;

#define _MD_CURRENT_THREAD() _pr_current_thread_tls()
#define _MD_CURRENT_CPU() _pr_current_cpu_tls()
#define _MD_LAST_THREAD() _pr_last_thread_tls()
	
#define _MD_SET_CURRENT_THREAD(newval) 			\
	PR_BEGIN_MACRO					\
	thr_setspecific(threadid_key, (void *)newval);	\
	PR_END_MACRO

#define _MD_SET_CURRENT_CPU(newval) 			\
	PR_BEGIN_MACRO					\
	thr_setspecific(cpuid_key, (void *)newval);	\
	PR_END_MACRO

#define _MD_SET_LAST_THREAD(newval)	 			\
	PR_BEGIN_MACRO						\
	thr_setspecific(last_thread_key, (void *)newval);	\
	PR_END_MACRO
	
#define	_MD_CLEAN_THREAD(_thread)	_MD_cleanup_thread(_thread)
extern void _MD_exit_thread(PRThread *thread);
#define _MD_EXIT_THREAD(thread)		_MD_exit_thread(thread)

#define	_MD_SUSPEND_THREAD(thread)	_MD_Suspend(thread)
#define	_MD_RESUME_THREAD(thread)	thr_continue((thread)->md.handle)

/* XXXX Needs to be defined - Prashant */
#define _MD_SUSPEND_CPU(cpu)
#define _MD_RESUME_CPU(cpu)

extern void _MD_Begin_SuspendAll(void);
extern void _MD_End_SuspendAll(void);
extern void _MD_End_ResumeAll(void);
#define _MD_BEGIN_SUSPEND_ALL()		_MD_Begin_SuspendAll()
#define _MD_BEGIN_RESUME_ALL()		
#define	_MD_END_SUSPEND_ALL()		_MD_End_SuspendAll()
#define	_MD_END_RESUME_ALL()		_MD_End_ResumeAll()

#define _MD_INIT_LOCKS()
#define _MD_NEW_LOCK(md_lockp) (mutex_init(&((md_lockp)->lock),USYNC_THREAD,NULL) ? PR_FAILURE : PR_SUCCESS)
#define _MD_FREE_LOCK(md_lockp) mutex_destroy(&((md_lockp)->lock))
#define _MD_UNLOCK(md_lockp) mutex_unlock(&((md_lockp)->lock))
#define _MD_TEST_AND_LOCK(md_lockp) mutex_trylock(&((md_lockp)->lock))
struct _MDLock;
NSPR_API(void) _MD_lock(struct _MDLock *md_lock);
#undef PROFILE_LOCKS
#ifndef PROFILE_LOCKS
#define _MD_LOCK(md_lockp) _MD_lock(md_lockp)
#else
#define _MD_LOCK(md_lockp)                 \
    PR_BEGIN_MACRO \
    int rv = _MD_TEST_AND_LOCK(md_lockp); \
    if (rv == 0) { \
        (md_lockp)->hitcount++; \
    } else { \
        (md_lockp)->misscount++; \
        _MD_lock(md_lockp); \
    } \
    PR_END_MACRO
#endif

#define _PR_LOCK_HEAP() if (_pr_heapLock) _MD_LOCK(&_pr_heapLock->md)
#define _PR_UNLOCK_HEAP() if (_pr_heapLock) _MD_UNLOCK(&_pr_heapLock->md)

#define _MD_ATTACH_THREAD(threadp)


#define THR_KEYCREATE thr_keycreate
#define THR_SELF thr_self
#define _MD_NEW_CV(condp) cond_init(&((condp)->cv), USYNC_THREAD, 0)
#define COND_WAIT(condp, mutexp) cond_wait(condp, mutexp)
#define COND_TIMEDWAIT(condp, mutexp, tspec) \
                                     cond_timedwait(condp, mutexp, tspec)
#define _MD_NOTIFY_CV(condp, lockp) cond_signal(&((condp)->cv))
#define _MD_NOTIFYALL_CV(condp,unused) cond_broadcast(&((condp)->cv))	
#define _MD_FREE_CV(condp) cond_destroy(&((condp)->cv))
#define _MD_YIELD() thr_yield()
#include <time.h>
/* 
 * Because clock_gettime() on Solaris/x86 2.4 always generates a
 * segmentation fault, we use an emulated version _pr_solx86_clock_gettime(),
 * which is implemented using gettimeofday().
 */
#if defined(i386) && defined(SOLARIS2_4)
extern int _pr_solx86_clock_gettime(clockid_t clock_id, struct timespec *tp);
#define GETTIME(tt) _pr_solx86_clock_gettime(CLOCK_REALTIME, (tt))
#else
#define GETTIME(tt) clock_gettime(CLOCK_REALTIME, (tt))
#endif  /* i386 && SOLARIS2_4 */

#define MUTEX_T mutex_t
#define COND_T cond_t

#define _MD_NEW_SEM(md_semp,_val)  sema_init(&((md_semp)->sem),_val,USYNC_THREAD,NULL)
#define _MD_DESTROY_SEM(md_semp) sema_destroy(&((md_semp)->sem))
#define _MD_WAIT_SEM(md_semp) sema_wait(&((md_semp)->sem))
#define _MD_POST_SEM(md_semp) sema_post(&((md_semp)->sem))

#define _MD_SAVE_ERRNO(_thread)
#define _MD_RESTORE_ERRNO(_thread)
#define _MD_INIT_RUNNING_CPU(cpu) _MD_unix_init_running_cpu(cpu)

extern struct _MDLock _pr_ioq_lock;
#define _MD_IOQ_LOCK()		_MD_LOCK(&_pr_ioq_lock)
#define _MD_IOQ_UNLOCK()	_MD_UNLOCK(&_pr_ioq_lock)

extern PRStatus _MD_wait(struct PRThread *, PRIntervalTime timeout);
#define _MD_WAIT _MD_wait

extern PRStatus _MD_WakeupWaiter(struct PRThread *);
#define _MD_WAKEUP_WAITER _MD_WakeupWaiter

NSPR_API(void) _MD_InitIO(void);
#define _MD_INIT_IO _MD_InitIO

#define _MD_INIT_CONTEXT(_thread, _sp, _main, status)
#define _MD_SWITCH_CONTEXT(_thread)
#define _MD_RESTORE_CONTEXT(_newThread)

struct _MDLock {
    MUTEX_T lock;
#ifdef PROFILE_LOCKS
    PRInt32 hitcount;
    PRInt32 misscount;
#endif
};

struct _MDCVar {
    COND_T cv;
};

struct _MDSemaphore {
    sema_t sem;
};

struct _MDThread {
    _PR_CONTEXT_TYPE context;
    thread_t handle;
    lwpid_t lwpid;
    uint_t sp;		/* stack pointer */
    uint_t threadID;	/* ptr to solaris-internal thread id structures */
    struct _MDSemaphore waiter_sem;
};

struct _MDThreadStack {
    PRInt8 notused;
};

struct _MDSegment {
    PRInt8 notused;
};

/*
 * md-specific cpu structure field, common to all Unix platforms
 */
#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 */