зеркало из https://github.com/mozilla/pjs.git
461 строка
14 KiB
C
461 строка
14 KiB
C
/* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
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/*
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* The contents of this file are subject to the Mozilla Public
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* License Version 1.1 (the "License"); you may not use this file
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* except in compliance with the License. You may obtain a copy of
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* the License at http://www.mozilla.org/MPL/
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*
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* Software distributed under the License is distributed on an "AS
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* IS" basis, WITHOUT WARRANTY OF ANY KIND, either express or
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* implied. See the License for the specific language governing
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* rights and limitations under the License.
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*
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* The Original Code is the Netscape Portable Runtime (NSPR).
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*
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* The Initial Developer of the Original Code is Netscape
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* Communications Corporation. Portions created by Netscape are
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* Copyright (C) 1998-2000 Netscape Communications Corporation. All
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* Rights Reserved.
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*
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* Contributor(s):
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*
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* Alternatively, the contents of this file may be used under the
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* terms of the GNU General Public License Version 2 or later (the
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* "GPL"), in which case the provisions of the GPL are applicable
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* instead of those above. If you wish to allow use of your
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* version of this file only under the terms of the GPL and not to
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* allow others to use your version of this file under the MPL,
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* indicate your decision by deleting the provisions above and
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* replace them with the notice and other provisions required by
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* the GPL. If you do not delete the provisions above, a recipient
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* may use your version of this file under either the MPL or the
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* GPL.
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*/
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#ifndef nspr_irix_defs_h___
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#define nspr_irix_defs_h___
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#define _PR_HAVE_ATOMIC_CAS
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/*
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* MipsPro assembler defines _LANGUAGE_ASSEMBLY
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*/
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#ifndef _LANGUAGE_ASSEMBLY
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#include "prclist.h"
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#include "prthread.h"
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#include <sys/ucontext.h>
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/*
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* Internal configuration macros
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*/
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#define PR_LINKER_ARCH "irix"
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#define _PR_SI_SYSNAME "IRIX"
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#define _PR_SI_ARCHITECTURE "mips"
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#define PR_DLL_SUFFIX ".so"
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#define _PR_VMBASE 0x30000000
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#define _PR_STACK_VMBASE 0x50000000
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#define _PR_NUM_GCREGS 9
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#define _MD_MMAP_FLAGS MAP_PRIVATE
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#define _MD_DEFAULT_STACK_SIZE 65536L
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#define _MD_MIN_STACK_SIZE 16384L
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#undef HAVE_STACK_GROWING_UP
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#define HAVE_WEAK_IO_SYMBOLS
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#define HAVE_WEAK_MALLOC_SYMBOLS
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#define HAVE_DLL
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#define USE_DLFCN
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#define _PR_HAVE_ATOMIC_OPS
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#define _PR_POLL_AVAILABLE
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#define _PR_USE_POLL
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#define _PR_STAT_HAS_ST_ATIM
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#define _PR_HAVE_OFF64_T
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#define HAVE_POINTER_LOCALTIME_R
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#define _PR_HAVE_POSIX_SEMAPHORES
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#define PR_HAVE_POSIX_NAMED_SHARED_MEMORY
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#define _PR_ACCEPT_INHERIT_NONBLOCK
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/* Initialization entry points */
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NSPR_API(void) _MD_EarlyInit(void);
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#define _MD_EARLY_INIT _MD_EarlyInit
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NSPR_API(void) _MD_IrixInit(void);
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#define _MD_FINAL_INIT _MD_IrixInit
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#define _MD_INIT_IO()
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/* Timer operations */
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NSPR_API(PRIntervalTime) _MD_IrixGetInterval(void);
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#define _MD_GET_INTERVAL _MD_IrixGetInterval
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NSPR_API(PRIntervalTime) _MD_IrixIntervalPerSec(void);
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#define _MD_INTERVAL_PER_SEC _MD_IrixIntervalPerSec
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/* GC operations */
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NSPR_API(void *) _MD_GetSP(PRThread *thread);
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#define _MD_GET_SP _MD_GetSP
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/* The atomic operations */
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#include <mutex.h>
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#define _MD_INIT_ATOMIC()
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#define _MD_ATOMIC_INCREMENT(val) add_then_test((unsigned long*)val, 1)
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#define _MD_ATOMIC_ADD(ptr, val) add_then_test((unsigned long*)ptr, (unsigned long)val)
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#define _MD_ATOMIC_DECREMENT(val) add_then_test((unsigned long*)val, 0xffffffff)
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#define _MD_ATOMIC_SET(val, newval) test_and_set((unsigned long*)val, newval)
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#if defined(_PR_PTHREADS)
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#else /* defined(_PR_PTHREADS) */
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/************************************************************************/
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#include <setjmp.h>
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#include <errno.h>
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#include <unistd.h>
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#include <bstring.h>
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#include <sys/time.h>
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#include <ulocks.h>
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#include <sys/prctl.h>
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/*
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* Data region private to each sproc. This region is setup by calling
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* mmap(...,MAP_LOCAL,...). The private data is mapped at the same
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* address in every sproc, but every sproc gets a private mapping.
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*
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* Just make sure that this structure fits in a page, as only one page
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* is allocated for the private region.
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*/
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struct sproc_private_data {
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struct PRThread *me;
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struct _PRCPU *cpu;
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struct PRThread *last;
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PRUintn intsOff;
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int sproc_pid;
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};
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extern char *_nspr_sproc_private;
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#define _PR_PRDA() ((struct sproc_private_data *) _nspr_sproc_private)
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#define _MD_SET_CURRENT_THREAD(_thread) _PR_PRDA()->me = (_thread)
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#define _MD_THIS_THREAD() (_PR_PRDA()->me)
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#define _MD_LAST_THREAD() (_PR_PRDA()->last)
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#define _MD_SET_LAST_THREAD(_thread) _PR_PRDA()->last = (_thread)
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#define _MD_CURRENT_CPU() (_PR_PRDA()->cpu)
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#define _MD_SET_CURRENT_CPU(_cpu) _PR_PRDA()->cpu = (_cpu)
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#define _MD_SET_INTSOFF(_val) (_PR_PRDA()->intsOff = _val)
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#define _MD_GET_INTSOFF() (_PR_PRDA()->intsOff)
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#define _MD_SET_SPROC_PID(_val) (_PR_PRDA()->sproc_pid = _val)
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#define _MD_GET_SPROC_PID() (_PR_PRDA()->sproc_pid)
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NSPR_API(struct PRThread*) _MD_get_attached_thread(void);
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NSPR_API(struct PRThread*) _MD_get_current_thread(void);
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#define _MD_GET_ATTACHED_THREAD() _MD_get_attached_thread()
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#define _MD_CURRENT_THREAD() _MD_get_current_thread()
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#define _MD_CHECK_FOR_EXIT() { \
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if (_pr_irix_exit_now) { \
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_PR_POST_SEM(_pr_irix_exit_sem); \
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_MD_Wakeup_CPUs(); \
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_exit(0); \
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} \
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}
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#define _MD_ATTACH_THREAD(threadp)
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#define _MD_SAVE_ERRNO(_thread) (_thread)->md.errcode = errno;
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#define _MD_RESTORE_ERRNO(_thread) errno = (_thread)->md.errcode;
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extern struct _PRCPU *_pr_primordialCPU;
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extern usema_t *_pr_irix_exit_sem;
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extern PRInt32 _pr_irix_exit_now;
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extern int _pr_irix_primoridal_cpu_fd[];
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extern PRInt32 _pr_irix_process_exit;
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extern PRInt32 _pr_irix_process_exit_code;
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/* Thread operations */
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#define _PR_LOCK_HEAP() { \
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PRIntn _is; \
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if (_pr_primordialCPU) { \
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if (_MD_GET_ATTACHED_THREAD() && \
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!_PR_IS_NATIVE_THREAD( \
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_MD_GET_ATTACHED_THREAD())) \
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_PR_INTSOFF(_is); \
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_PR_LOCK(_pr_heapLock); \
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}
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#define _PR_UNLOCK_HEAP() if (_pr_primordialCPU) { \
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_PR_UNLOCK(_pr_heapLock); \
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if (_MD_GET_ATTACHED_THREAD() && \
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!_PR_IS_NATIVE_THREAD( \
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_MD_GET_ATTACHED_THREAD())) \
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_PR_INTSON(_is); \
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} \
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}
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#define _PR_OPEN_POLL_SEM(_sem) usopenpollsema(_sem, 0666)
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#define _PR_WAIT_SEM(_sem) uspsema(_sem)
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#define _PR_POST_SEM(_sem) usvsema(_sem)
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#define _MD_CVAR_POST_SEM(threadp) usvsema((threadp)->md.cvar_pollsem)
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#define _MD_IOQ_LOCK()
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#define _MD_IOQ_UNLOCK()
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struct _MDLock {
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ulock_t lock;
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usptr_t *arena;
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};
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/*
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* disable pre-emption for the LOCAL threads when calling the arena lock
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* routines
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*/
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#define _PR_LOCK(lock) { \
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PRIntn _is; \
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PRThread *me = _MD_GET_ATTACHED_THREAD(); \
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if (me && !_PR_IS_NATIVE_THREAD(me)) \
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_PR_INTSOFF(_is); \
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ussetlock(lock); \
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if (me && !_PR_IS_NATIVE_THREAD(me)) \
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_PR_FAST_INTSON(_is); \
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}
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#define _PR_UNLOCK(lock) { \
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PRIntn _is; \
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PRThread *me = _MD_GET_ATTACHED_THREAD(); \
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if (me && !_PR_IS_NATIVE_THREAD(me)) \
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_PR_INTSOFF(_is); \
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usunsetlock(lock); \
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if (me && !_PR_IS_NATIVE_THREAD(me)) \
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_PR_FAST_INTSON(_is); \
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}
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NSPR_API(PRStatus) _MD_NEW_LOCK(struct _MDLock *md);
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NSPR_API(void) _MD_FREE_LOCK(struct _MDLock *lockp);
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#define _MD_LOCK(_lockp) _PR_LOCK((_lockp)->lock)
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#define _MD_UNLOCK(_lockp) _PR_UNLOCK((_lockp)->lock)
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#define _MD_TEST_AND_LOCK(_lockp) uscsetlock((_lockp)->lock, 1)
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extern ulock_t _pr_heapLock;
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struct _MDThread {
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jmp_buf jb;
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usptr_t *pollsem_arena;
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usema_t *cvar_pollsem;
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PRInt32 cvar_pollsemfd;
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PRInt32 cvar_pollsem_select; /* acquire sem by calling select */
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PRInt32 cvar_wait; /* if 1, thread is waiting on cvar Q */
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PRInt32 id;
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PRInt32 suspending_id;
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int errcode;
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};
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struct _MDThreadStack {
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PRInt8 notused;
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};
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struct _MDSemaphore {
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usema_t *sem;
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};
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struct _MDCVar {
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ulock_t mdcvar_lock;
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};
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struct _MDSegment {
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PRInt8 notused;
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};
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/*
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* md-specific cpu structure field
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*/
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#define _PR_MD_MAX_OSFD FD_SETSIZE
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struct _MDCPU_Unix {
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PRCList ioQ;
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PRUint32 ioq_timeout;
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PRInt32 ioq_max_osfd;
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PRInt32 ioq_osfd_cnt;
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#ifndef _PR_USE_POLL
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fd_set fd_read_set, fd_write_set, fd_exception_set;
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PRInt16 fd_read_cnt[_PR_MD_MAX_OSFD],fd_write_cnt[_PR_MD_MAX_OSFD],
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fd_exception_cnt[_PR_MD_MAX_OSFD];
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#else
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struct pollfd *ioq_pollfds;
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int ioq_pollfds_size;
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#endif /* _PR_USE_POLL */
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};
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#define _PR_IOQ(_cpu) ((_cpu)->md.md_unix.ioQ)
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#define _PR_ADD_TO_IOQ(_pq, _cpu) PR_APPEND_LINK(&_pq.links, &_PR_IOQ(_cpu))
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#define _PR_FD_READ_SET(_cpu) ((_cpu)->md.md_unix.fd_read_set)
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#define _PR_FD_READ_CNT(_cpu) ((_cpu)->md.md_unix.fd_read_cnt)
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#define _PR_FD_WRITE_SET(_cpu) ((_cpu)->md.md_unix.fd_write_set)
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#define _PR_FD_WRITE_CNT(_cpu) ((_cpu)->md.md_unix.fd_write_cnt)
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#define _PR_FD_EXCEPTION_SET(_cpu) ((_cpu)->md.md_unix.fd_exception_set)
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#define _PR_FD_EXCEPTION_CNT(_cpu) ((_cpu)->md.md_unix.fd_exception_cnt)
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#define _PR_IOQ_TIMEOUT(_cpu) ((_cpu)->md.md_unix.ioq_timeout)
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#define _PR_IOQ_MAX_OSFD(_cpu) ((_cpu)->md.md_unix.ioq_max_osfd)
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#define _PR_IOQ_OSFD_CNT(_cpu) ((_cpu)->md.md_unix.ioq_osfd_cnt)
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#define _PR_IOQ_POLLFDS(_cpu) ((_cpu)->md.md_unix.ioq_pollfds)
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#define _PR_IOQ_POLLFDS_SIZE(_cpu) ((_cpu)->md.md_unix.ioq_pollfds_size)
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#define _PR_IOQ_MIN_POLLFDS_SIZE(_cpu) 32
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struct _MDCPU {
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PRInt32 id;
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PRInt32 suspending_id;
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struct _MDCPU_Unix md_unix;
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};
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/*
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** Initialize the thread context preparing it to execute _main.
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*/
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#define _MD_INIT_CONTEXT(_thread, _sp, _main, status) \
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PR_BEGIN_MACRO \
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int *jb = (_thread)->md.jb; \
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*status = PR_TRUE; \
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(void) setjmp(jb); \
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(_thread)->md.jb[JB_SP] = (int) ((_sp) - 64); \
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(_thread)->md.jb[JB_PC] = (int) _main; \
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_thread->no_sched = 0; \
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PR_END_MACRO
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/*
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** Switch away from the current thread context by saving its state and
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** calling the thread scheduler. Reload cpu when we come back from the
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** context switch because it might have changed.
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*
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* XXX RUNQ lock needed before clearing _PR_NO_SCHED flag, because the
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* thread may be unr RUNQ?
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*/
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#define _MD_SWITCH_CONTEXT(_thread) \
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PR_BEGIN_MACRO \
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PR_ASSERT(_thread->no_sched); \
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if (!setjmp(_thread->md.jb)) { \
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_MD_SAVE_ERRNO(_thread) \
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_MD_SET_LAST_THREAD(_thread); \
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_PR_Schedule(); \
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} else { \
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PR_ASSERT(_MD_LAST_THREAD() !=_MD_CURRENT_THREAD()); \
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_MD_LAST_THREAD()->no_sched = 0; \
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} \
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PR_END_MACRO
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/*
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** Restore a thread context that was saved by _MD_SWITCH_CONTEXT or
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** initialized by _MD_INIT_CONTEXT.
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*/
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#define _MD_RESTORE_CONTEXT(_newThread) \
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PR_BEGIN_MACRO \
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int *jb = (_newThread)->md.jb; \
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_MD_RESTORE_ERRNO(_newThread) \
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_MD_SET_CURRENT_THREAD(_newThread); \
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_newThread->no_sched = 1; \
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longjmp(jb, 1); \
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PR_END_MACRO
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NSPR_API(PRStatus) _MD_InitThread(struct PRThread *thread,
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PRBool wakeup_parent);
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NSPR_API(PRStatus) _MD_InitAttachedThread(struct PRThread *thread,
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PRBool wakeup_parent);
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#define _MD_INIT_THREAD(thread) _MD_InitThread(thread, PR_TRUE)
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#define _MD_INIT_ATTACHED_THREAD(thread) \
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_MD_InitAttachedThread(thread, PR_FALSE)
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NSPR_API(void) _MD_ExitThread(struct PRThread *thread);
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#define _MD_EXIT_THREAD _MD_ExitThread
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NSPR_API(void) _MD_SuspendThread(struct PRThread *thread);
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#define _MD_SUSPEND_THREAD _MD_SuspendThread
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NSPR_API(void) _MD_ResumeThread(struct PRThread *thread);
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#define _MD_RESUME_THREAD _MD_ResumeThread
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NSPR_API(void) _MD_SuspendCPU(struct _PRCPU *thread);
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#define _MD_SUSPEND_CPU _MD_SuspendCPU
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NSPR_API(void) _MD_ResumeCPU(struct _PRCPU *thread);
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#define _MD_RESUME_CPU _MD_ResumeCPU
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#define _MD_BEGIN_SUSPEND_ALL()
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#define _MD_END_SUSPEND_ALL()
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#define _MD_BEGIN_RESUME_ALL()
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#define _MD_END_RESUME_ALL()
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NSPR_API(void) _MD_InitLocks(void);
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#define _MD_INIT_LOCKS _MD_InitLocks
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NSPR_API(void) _MD_CleanThread(struct PRThread *thread);
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#define _MD_CLEAN_THREAD _MD_CleanThread
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#define _MD_YIELD() sginap(0)
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/* The _PR_MD_WAIT_LOCK and _PR_MD_WAKEUP_WAITER functions put to sleep and
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* awaken a thread which is waiting on a lock or cvar.
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*/
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NSPR_API(PRStatus) _MD_wait(struct PRThread *, PRIntervalTime timeout);
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#define _MD_WAIT _MD_wait
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NSPR_API(void) _PR_MD_primordial_cpu();
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NSPR_API(void) _PR_MD_WAKEUP_PRIMORDIAL_CPU();
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NSPR_API(PRStatus) _MD_WakeupWaiter(struct PRThread *);
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#define _MD_WAKEUP_WAITER _MD_WakeupWaiter
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NSPR_API(void ) _MD_exit(PRIntn status);
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#define _MD_EXIT _MD_exit
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#include "prthread.h"
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NSPR_API(void) _MD_SetPriority(struct _MDThread *thread,
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PRThreadPriority newPri);
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#define _MD_SET_PRIORITY _MD_SetPriority
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NSPR_API(PRStatus) _MD_CreateThread(
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struct PRThread *thread,
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void (*start) (void *),
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PRThreadPriority priority,
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PRThreadScope scope,
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PRThreadState state,
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PRUint32 stackSize);
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#define _MD_CREATE_THREAD _MD_CreateThread
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extern void _MD_CleanupBeforeExit(void);
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#define _MD_CLEANUP_BEFORE_EXIT _MD_CleanupBeforeExit
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NSPR_API(void) _PR_MD_PRE_CLEANUP(PRThread *me);
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/* The following defines the unwrapped versions of select() and poll(). */
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extern int _select(int nfds, fd_set *readfds, fd_set *writefds,
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fd_set *exceptfds, struct timeval *timeout);
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#define _MD_SELECT _select
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#include <stropts.h>
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#include <poll.h>
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#define _MD_POLL _poll
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extern int _poll(struct pollfd *fds, unsigned long nfds, int timeout);
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#define HAVE_THREAD_AFFINITY 1
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NSPR_API(PRInt32) _MD_GetThreadAffinityMask(PRThread *unused, PRUint32 *mask);
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#define _MD_GETTHREADAFFINITYMASK _MD_GetThreadAffinityMask
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NSPR_API(void) _MD_InitRunningCPU(struct _PRCPU *cpu);
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#define _MD_INIT_RUNNING_CPU _MD_InitRunningCPU
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#endif /* defined(_PR_PTHREADS) */
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#endif /* _LANGUAGE_ASSEMBLY */
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#endif /* nspr_irix_defs_h___ */
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