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Mozilla/mozilla/nsprpub/pr/include/md/_pth.h
wtc%netscape.com 7761ce2d75 Merged first batch of BeOS port patches contributed by 
Matthew Zahorik <maz@albany.net>.


git-svn-id: svn://10.0.0.236/trunk@18564 18797224-902f-48f8-a5cc-f745e15eee43
1999-01-26 01:56:55 +00:00

232 lines
8.3 KiB
C
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/* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
/*
* The contents of this file are subject to the Netscape Public License
* Version 1.0 (the "NPL"); you may not use this file except in
* compliance with the NPL. You may obtain a copy of the NPL at
* http://www.mozilla.org/NPL/
*
* Software distributed under the NPL is distributed on an "AS IS" basis,
* WITHOUT WARRANTY OF ANY KIND, either express or implied. See the NPL
* for the specific language governing rights and limitations under the
* NPL.
*
* The Initial Developer of this code under the NPL is Netscape
* Communications Corporation. Portions created by Netscape are
* Copyright (C) 1998 Netscape Communications Corporation. All Rights
* Reserved.
*/
#ifndef nspr_pth_defs_h_
#define nspr_pth_defs_h_
/*
** Appropriate definitions of entry points not used in a pthreads world
*/
#define _PR_MD_BLOCK_CLOCK_INTERRUPTS()
#define _PR_MD_UNBLOCK_CLOCK_INTERRUPTS()
#define _PR_MD_DISABLE_CLOCK_INTERRUPTS()
#define _PR_MD_ENABLE_CLOCK_INTERRUPTS()
/* In good standards fashion, the DCE threads (based on posix-4) are not
* quite the same as newer posix implementations. These are mostly name
* changes and small differences, so macros usually do the trick
*/
#ifdef _PR_DCETHREADS
#define PTHREAD_MUTEXATTR_INIT pthread_mutexattr_create
#define PTHREAD_MUTEXATTR_DESTROY pthread_mutexattr_delete
#define PTHREAD_MUTEX_INIT(m, a) pthread_mutex_init(&(m), a)
#define PTHREAD_MUTEX_IS_LOCKED(m) (0 == pthread_mutex_trylock(&(m)))
#define PTHREAD_CONDATTR_INIT pthread_condattr_create
#define PTHREAD_COND_INIT(m, a) pthread_cond_init(&(m), a)
#define PTHREAD_CONDATTR_DESTROY pthread_condattr_delete
/* Notes about differences between DCE threads and pthreads 10:
* 1. pthread_mutex_trylock returns 1 when it locks the mutex
* 0 when it does not. The latest pthreads has a set of errno-like
* return values.
* 2. return values from pthread_cond_timedwait are different.
*
*
*
*/
#elif defined(BSDI)
/*
* Mutex and condition attributes are not supported. The attr
* argument to pthread_mutex_init() and pthread_cond_init() must
* be passed as NULL.
*/
#define PTHREAD_MUTEXATTR_INIT(x) 0
#define PTHREAD_MUTEXATTR_DESTROY(x) /* */
#define PTHREAD_MUTEX_INIT(m, a) pthread_mutex_init(&(m), NULL)
#define PTHREAD_MUTEX_IS_LOCKED(m) (EBUSY == pthread_mutex_trylock(&(m)))
#define PTHREAD_CONDATTR_INIT(x) 0
#define PTHREAD_CONDATTR_DESTROY(x) /* */
#define PTHREAD_COND_INIT(m, a) pthread_cond_init(&(m), NULL)
#else
#define PTHREAD_MUTEXATTR_INIT pthread_mutexattr_init
#define PTHREAD_MUTEXATTR_DESTROY pthread_mutexattr_destroy
#define PTHREAD_MUTEX_INIT(m, a) pthread_mutex_init(&(m), &(a))
#define PTHREAD_MUTEX_IS_LOCKED(m) (EBUSY == pthread_mutex_trylock(&(m)))
#define PTHREAD_CONDATTR_INIT pthread_condattr_init
#define PTHREAD_CONDATTR_DESTROY pthread_condattr_destroy
#define PTHREAD_COND_INIT(m, a) pthread_cond_init(&(m), &(a))
#endif
/* The pthread_t handle used to identify a thread can vary in size
* with different implementations of pthreads. This macro defines
* a way to get a unique identifier from the handle. This may be
* more of a problem as we adapt to more pthreads implementations.
*/
#if defined(_PR_DCETHREADS)
#define PTHREAD_ZERO_THR_HANDLE(t) memset(&(t), 0, sizeof(pthread_t))
#define PTHREAD_THR_HANDLE_IS_ZERO(t) \
(!memcmp(&(t), &pt_zero_tid, sizeof(pthread_t)))
#define PTHREAD_COPY_THR_HANDLE(st, dt) (dt) = (st)
#elif defined(IRIX) || defined(OSF1) || defined(AIX) || defined(SOLARIS) \
|| defined(HPUX) || defined(LINUX) || defined(FREEBSD) \
|| defined(NETBSD) || defined(OPENBSD) || defined(BSDI)
#define PTHREAD_ZERO_THR_HANDLE(t) (t) = 0
#define PTHREAD_THR_HANDLE_IS_ZERO(t) (t) == 0
#define PTHREAD_COPY_THR_HANDLE(st, dt) (dt) = (st)
#else
#error "pthreads is not supported for this architecture"
#endif
#if defined(_PR_DCETHREADS)
#define PTHREAD_ATTR_INIT pthread_attr_create
#define PTHREAD_ATTR_DESTROY pthread_attr_delete
#define PTHREAD_CREATE(t, a, f, r) pthread_create(t, a, f, r)
#define PTHREAD_KEY_CREATE pthread_keycreate
#define PTHREAD_ATTR_SETSCHEDPOLICY pthread_attr_setsched
#define PTHREAD_ATTR_GETSTACKSIZE(a, s) \
(*(s) = pthread_attr_getstacksize(*(a)), 0)
#define PTHREAD_GETSPECIFIC(k, r) \
pthread_getspecific((k), (pthread_addr_t *) &(r))
#elif defined(_PR_PTHREADS)
#define PTHREAD_ATTR_INIT pthread_attr_init
#define PTHREAD_ATTR_DESTROY pthread_attr_destroy
#define PTHREAD_CREATE(t, a, f, r) pthread_create(t, &a, f, r)
#define PTHREAD_KEY_CREATE pthread_key_create
#define PTHREAD_ATTR_SETSCHEDPOLICY pthread_attr_setschedpolicy
#define PTHREAD_ATTR_GETSTACKSIZE(a, s) pthread_attr_getstacksize(a, s)
#define PTHREAD_GETSPECIFIC(k, r) (r) = pthread_getspecific(k)
#else
#error "Cannot determine pthread strategy"
#endif
#if defined(_PR_DCETHREADS)
#define PTHREAD_EXPLICIT_SCHED PTHREAD_DEFAULT_SCHED
#endif
/*
* pthread_mutex_trylock returns different values in DCE threads and
* pthreads.
*/
#if defined(_PR_DCETHREADS)
#define PT_TRYLOCK_SUCCESS 1
#define PT_TRYLOCK_BUSY 0
#else
#define PT_TRYLOCK_SUCCESS 0
#define PT_TRYLOCK_BUSY EBUSY
#endif
/*
* These platforms don't have pthread_atfork()
*/
#if defined(_PR_DCETHREADS) || defined(FREEBSD) \
|| (defined(LINUX) && defined(__alpha)) \
|| defined(NETBSD) || defined(OPENBSD)
#define PT_NO_ATFORK
#endif
/*
* These platforms don't have sigtimedwait()
*/
#if (defined(AIX) && !defined(AIX4_3)) || defined(LINUX) \
|| defined(FREEBSD) || defined(NETBSD) || defined(OPENBSD) \
|| defined(BSDI)
#define PT_NO_SIGTIMEDWAIT
#endif
#if defined(OSF1)
#define PT_PRIO_MIN PRI_OTHER_MIN
#define PT_PRIO_MAX PRI_OTHER_MAX
#elif defined(IRIX)
#include <sys/sched.h>
#define PT_PRIO_MIN PX_PRIO_MIN
#define PT_PRIO_MAX PX_PRIO_MAX
#elif defined(AIX)
#include <sys/priv.h>
#include <sys/sched.h>
#ifndef PTHREAD_CREATE_JOINABLE
#define PTHREAD_CREATE_JOINABLE PTHREAD_CREATE_UNDETACHED
#endif
#define PT_PRIO_MIN DEFAULT_PRIO
#define PT_PRIO_MAX DEFAULT_PRIO
#elif defined(HPUX)
#if defined(_PR_DCETHREADS)
#define PT_PRIO_MIN PRI_OTHER_MIN
#define PT_PRIO_MAX PRI_OTHER_MAX
#else /* defined(_PR_DCETHREADS) */
#include <sys/sched.h>
#define PT_PRIO_MIN sched_get_priority_min(SCHED_OTHER)
#define PT_PRIO_MAX sched_get_priority_max(SCHED_OTHER)
#endif /* defined(_PR_DCETHREADS) */
#elif defined(LINUX)
#define PT_PRIO_MIN sched_get_priority_min(SCHED_OTHER)
#define PT_PRIO_MAX sched_get_priority_max(SCHED_OTHER)
#elif defined(SOLARIS)
/*
* Solaris doesn't seem to have macros for the min/max priorities.
* The range of 0-127 is mentioned in the pthread_setschedparam(3T)
* man pages, and pthread_setschedparam indeed allows 0-127. However,
* pthread_attr_setschedparam does not allow 0; it allows 1-127.
*/
#define PT_PRIO_MIN 1
#define PT_PRIO_MAX 127
#elif defined(FREEBSD) || defined(NETBSD) || defined(OPENBSD) \
|| defined(BSDI) /* XXX */
#define PT_PRIO_MIN 0
#define PT_PRIO_MAX 126
#else
#error "pthreads is not supported for this architecture"
#endif
/*
* The PTHREAD_YIELD function is called from a signal handler.
* Needed for garbage collection -- Look at PR_Suspend/PR_Resume
* implementation.
*/
#if defined(_PR_DCETHREADS)
#define PTHREAD_YIELD() pthread_yield()
#elif defined(OSF1)
/*
* sched_yield can't be called from a signal handler. Must use
* the _np version.
*/
#define PTHREAD_YIELD() pthread_yield_np()
#elif defined(AIX)
extern int (*_PT_aix_yield_fcn)();
#define PTHREAD_YIELD() (*_PT_aix_yield_fcn)()
#elif defined(IRIX)
#include <time.h>
#define PTHREAD_YIELD() \
PR_BEGIN_MACRO \
struct timespec onemillisec = {0}; \
onemillisec.tv_nsec = 1000000L; \
nanosleep(&onemillisec,NULL); \
PR_END_MACRO
#elif defined(HPUX) || defined(LINUX) || defined(SOLARIS) \
|| defined(FREEBSD) || defined(NETBSD) || defined(OPENBSD) \
|| defined(BSDI)
#define PTHREAD_YIELD() sched_yield()
#else
#error "Need to define PTHREAD_YIELD for this platform"
#endif
#define _MD_INIT_LOCKS()
#endif /* nspr_pth_defs_h_ */
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