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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()
-
- /* 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.
- *
- *
- *
- */
- #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)
- #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
-
- /*
- * See if we have the privilege to set the scheduling policy and
- * priority of threads. Returns 0 if privilege is available.
- * Returns EPERM otherwise.
- */
-
- #ifdef AIX
- #define PT_PRIVCHECK() privcheck(SET_PROC_RAC)
- #elif defined(HPUX) && !defined(_PR_DCETHREADS)
- PR_EXTERN(PRIntn) pt_hpux_privcheck(void);
- #define PT_PRIVCHECK() pt_hpux_privcheck()
- #else
- #define PT_PRIVCHECK() 0
- #endif /* AIX */
-
- #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))
- #define PT_NO_ATFORK
- #endif
-
- /*
- * These platforms don't have sigtimedwait()
- */
- #if (defined(AIX) && !defined(AIX4_3)) || defined(LINUX2_0) \
- || defined(FREEBSD)
- #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) /* XXX */
- #define PT_PRIO_MIN 0
- #define PT_PRIO_MAX 126
- #else
- #error "pthreads is not supported for this architecture"
- #endif
-
- /* Needed for garbage collection -- Look at PR_Suspend/PR_Resume implementation */
- #if defined(OSF1)
- #define PTHREAD_YIELD() pthread_yield_np()
- #elif defined(HPUX10_30) || defined(HPUX11) || defined(AIX4_3)
- #define PTHREAD_YIELD() sched_yield()
- #elif (defined(AIX) && !defined(AIX4_3)) || defined(HPUX)
- #define PTHREAD_YIELD() pthread_yield()
- #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(SOLARIS)
- #define PTHREAD_YIELD() sched_yield()
- #elif defined(LINUX)
- #define PTHREAD_YIELD() sched_yield()
- #elif defined(FREEBSD)
- #define PTHREAD_YIELD() pthread_yield()
- #else
- #error "Need to define PTHREAD_YIELD for this platform"
- #endif
-
- /*
- ** And when you really wanted hardcore locking w/o any fluff ...
- **
- ** ... and why would you want that????
- */
- #define _PR_LOCK_LOCK(_lock) pthread_mutex_lock(&_lock->mutex);
- #define _PR_LOCK_UNLOCK(_lock) pthread_mutex_unlock(&_lock->mutex);
-
- #define _MD_INIT_LOCKS()
-
- #endif /* nspr_pth_defs_h_ */
-