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Diffstat (limited to 'nsprpub/pr/include/private/primpl.h')
| -rw-r--r-- | nsprpub/pr/include/private/primpl.h | 2149 |
1 files changed, 2149 insertions, 0 deletions
diff --git a/nsprpub/pr/include/private/primpl.h b/nsprpub/pr/include/private/primpl.h new file mode 100644 index 0000000000..3f5a150470 --- /dev/null +++ b/nsprpub/pr/include/private/primpl.h @@ -0,0 +1,2149 @@ +/* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 2 -*- */ +/* This Source Code Form is subject to the terms of the Mozilla Public + * License, v. 2.0. If a copy of the MPL was not distributed with this + * file, You can obtain one at http://mozilla.org/MPL/2.0/. */ + +#ifndef primpl_h___ +#define primpl_h___ + +#if defined(_PR_PTHREADS) +#include <pthread.h> +#endif + +#ifdef WIN32 +/* + * Allow use of functions and symbols first defined in Win2k. + */ +#if !defined(WINVER) || (WINVER < 0x0500) +#undef WINVER +#define WINVER 0x0500 +#endif +#if !defined(_WIN32_WINNT) || (_WIN32_WINNT < 0x0500) +#undef _WIN32_WINNT +#define _WIN32_WINNT 0x0500 +#endif +#endif /* WIN32 */ + +#include "nspr.h" +#include "prpriv.h" + +typedef struct PRSegment PRSegment; + +#include "md/prosdep.h" +#include "obsolete/probslet.h" + +#ifdef _PR_HAVE_POSIX_SEMAPHORES +#include <semaphore.h> +#elif defined(_PR_HAVE_SYSV_SEMAPHORES) +#include <sys/sem.h> +#endif + +#ifdef HAVE_SYSCALL +#include <sys/syscall.h> +#endif + +/************************************************************************* +***** A Word about Model Dependent Function Naming Convention *********** +*************************************************************************/ + +/* +NSPR 2.0 must implement its function across a range of platforms +including: MAC, Windows/16, Windows/95, Windows/NT, and several +variants of Unix. Each implementation shares common code as well +as having platform dependent portions. This standard describes how +the model dependent portions are to be implemented. + +In header file pr/include/primpl.h, each publicly declared +platform dependent function is declared as: + +NSPR_API void _PR_MD_FUNCTION( long arg1, long arg2 ); +#define _PR_MD_FUNCTION _MD_FUNCTION + +In header file pr/include/md/<platform>/_<platform>.h, +each #define'd macro is redefined as one of: + +#define _MD_FUNCTION <blanks> +#define _MD_FUNCTION <expanded macro> +#define _MD_FUNCTION <osFunction> +#define _MD_FUNCTION <_MD_Function> + +Where: + +<blanks> is no definition at all. In this case, the function is not implemented +and is never called for this platform. +For example: +#define _MD_INIT_CPUS() + +<expanded macro> is a C language macro expansion. +For example: +#define _MD_CLEAN_THREAD(_thread) \ + PR_BEGIN_MACRO \ + PR_DestroyCondVar(_thread->md.asyncIOCVar); \ + PR_DestroyLock(_thread->md.asyncIOLock); \ + PR_END_MACRO + +<osFunction> is some function implemented by the host operating system. +For example: +#define _MD_EXIT exit + +<_MD_function> is the name of a function implemented for this platform in +pr/src/md/<platform>/<soruce>.c file. +For example: +#define _MD_GETFILEINFO _MD_GetFileInfo + +In <source>.c, the implementation is: +PR_IMPLEMENT(PRInt32) _MD_GetFileInfo(const char *fn, PRFileInfo *info); +*/ + +PR_BEGIN_EXTERN_C + +typedef struct _MDLock _MDLock; +typedef struct _MDCVar _MDCVar; +typedef struct _MDSegment _MDSegment; +typedef struct _MDThread _MDThread; +typedef struct _MDThreadStack _MDThreadStack; +typedef struct _MDSemaphore _MDSemaphore; +typedef struct _MDDir _MDDir; +#ifdef MOZ_UNICODE +typedef struct _MDDirUTF16 _MDDirUTF16; +#endif /* MOZ_UNICODE */ +typedef struct _MDFileDesc _MDFileDesc; +typedef struct _MDProcess _MDProcess; +typedef struct _MDFileMap _MDFileMap; + +#if defined(_PR_PTHREADS) + +/* +** The following definitions are unique to implementing NSPR using pthreads. +** Since pthreads defines most of the thread and thread synchronization +** stuff, this is a pretty small set. +*/ + +#define PT_CV_NOTIFIED_LENGTH 6 +typedef struct _PT_Notified _PT_Notified; +struct _PT_Notified +{ + PRIntn length; /* # of used entries in this structure */ + struct + { + PRCondVar *cv; /* the condition variable notified */ + PRIntn times; /* and the number of times notified */ + } cv[PT_CV_NOTIFIED_LENGTH]; + _PT_Notified *link; /* link to another of these | NULL */ +}; + +/* + * bits defined for pthreads 'state' field + */ +#define PT_THREAD_DETACHED 0x01 /* thread can't be joined */ +#define PT_THREAD_GLOBAL 0x02 /* a global thread (unlikely) */ +#define PT_THREAD_SYSTEM 0x04 /* system (not user) thread */ +#define PT_THREAD_PRIMORD 0x08 /* this is the primordial thread */ +#define PT_THREAD_ABORTED 0x10 /* thread has been interrupted */ +#define PT_THREAD_GCABLE 0x20 /* thread is garbage collectible */ +#define PT_THREAD_SUSPENDED 0x40 /* thread has been suspended */ +#define PT_THREAD_FOREIGN 0x80 /* thread is not one of ours */ +#define PT_THREAD_BOUND 0x100 /* a bound-global thread */ + +#define _PT_THREAD_INTERRUPTED(thr) \ + (!(thr->interrupt_blocked) && (thr->state & PT_THREAD_ABORTED)) +#define _PT_THREAD_BLOCK_INTERRUPT(thr) \ + (thr->interrupt_blocked = 1) +#define _PT_THREAD_UNBLOCK_INTERRUPT(thr) \ + (thr->interrupt_blocked = 0) + +#define _PT_IS_GCABLE_THREAD(thr) ((thr)->state & PT_THREAD_GCABLE) + +/* +** Possible values for thread's suspend field +** Note that the first two can be the same as they are really mutually exclusive, +** i.e. both cannot be happening at the same time. We have two symbolic names +** just as a mnemonic. +**/ +#define PT_THREAD_RESUMED 0x80 /* thread has been resumed */ +#define PT_THREAD_SETGCABLE 0x100 /* set the GCAble flag */ + +#if defined(DEBUG) + +typedef struct PTDebug +{ + PRTime timeStarted; + PRUintn locks_created, locks_destroyed; + PRUintn locks_acquired, locks_released; + PRUintn cvars_created, cvars_destroyed; + PRUintn cvars_notified, delayed_cv_deletes; +} PTDebug; + +#endif /* defined(DEBUG) */ + +NSPR_API(void) PT_FPrintStats(PRFileDesc *fd, const char *msg); + +/* + * On Linux and its derivatives POSIX priority scheduling works only for + * real-time threads. On those platforms we set thread's nice values + * instead which requires us to track kernel thread IDs for each POSIX + * thread we create. + */ +#if defined(LINUX) && defined(HAVE_SETPRIORITY) && \ + ((defined(HAVE_SYSCALL) && defined(SYS_gettid)) || defined(HAVE_GETTID)) +#define _PR_NICE_PRIORITY_SCHEDULING +#endif + +#else /* defined(_PR_PTHREADS) */ + +NSPR_API(void) PT_FPrintStats(PRFileDesc *fd, const char *msg); + +/* +** This section is contains those parts needed to implement NSPR on +** platforms in general. One would assume that the pthreads implementation +** included lots of the same types, at least conceptually. +*/ + +/* + * Local threads only. No multiple CPU support and hence all the + * following routines are no-op. + */ +#ifdef _PR_LOCAL_THREADS_ONLY + +#define _PR_MD_SUSPEND_THREAD(thread) +#define _PR_MD_RESUME_THREAD(thread) +#define _PR_MD_SUSPEND_CPU(cpu) +#define _PR_MD_RESUME_CPU(cpu) +#define _PR_MD_BEGIN_SUSPEND_ALL() +#define _PR_MD_END_SUSPEND_ALL() +#define _PR_MD_BEGIN_RESUME_ALL() +#define _PR_MD_END_RESUME_ALL() +#define _PR_MD_INIT_ATTACHED_THREAD(thread) PR_FAILURE + +#endif + +typedef struct _PRCPUQueue _PRCPUQueue; +typedef struct _PRCPU _PRCPU; +typedef struct _MDCPU _MDCPU; + +struct _PRCPUQueue { + _MDLock runQLock; /* lock for the run + wait queues */ + _MDLock sleepQLock; /* lock for the run + wait queues */ + _MDLock miscQLock; /* lock for the run + wait queues */ + + PRCList runQ[PR_PRIORITY_LAST + 1]; /* run queue for this CPU */ + PRUint32 runQReadyMask; + PRCList sleepQ; + PRIntervalTime sleepQmax; + PRCList pauseQ; + PRCList suspendQ; + PRCList waitingToJoinQ; + + PRUintn numCPUs; /* number of CPUs using this Q */ +}; + +struct _PRCPU { + PRCList links; /* link list of CPUs */ + PRUint32 id; /* id for this CPU */ + + union { + PRInt32 bits; + PRUint8 missed[4]; + } u; + PRIntn where; /* index into u.missed */ + PRPackedBool paused; /* cpu is paused */ + PRPackedBool exit; /* cpu should exit */ + + PRThread *thread; /* native thread for this CPUThread */ + PRThread *idle_thread; /* user-level idle thread for this CPUThread */ + + PRIntervalTime last_clock; /* the last time we went into + * _PR_ClockInterrupt() on this CPU + */ + + _PRCPUQueue *queue; + + _MDCPU md; +}; + +typedef struct _PRInterruptTable { + const char *name; + PRUintn missed_bit; + void (*handler)(void); +} _PRInterruptTable; + +#define _PR_CPU_PTR(_qp) \ + ((_PRCPU*) ((char*) (_qp) - offsetof(_PRCPU,links))) + +#if !defined(WIN32) && !defined(XP_OS2) \ + && !(defined(SOLARIS) && defined(_PR_GLOBAL_THREADS_ONLY)) +#define _MD_GET_ATTACHED_THREAD() (_PR_MD_CURRENT_THREAD()) +#endif + +#ifdef _PR_LOCAL_THREADS_ONLY + +NSPR_API(struct _PRCPU *) _pr_currentCPU; +NSPR_API(PRThread *) _pr_currentThread; +NSPR_API(PRThread *) _pr_lastThread; +NSPR_API(PRInt32) _pr_intsOff; + +#define _MD_CURRENT_CPU() (_pr_currentCPU) +#define _MD_SET_CURRENT_CPU(_cpu) (_pr_currentCPU = (_cpu)) +#define _MD_CURRENT_THREAD() (_pr_currentThread) +#define _MD_SET_CURRENT_THREAD(_thread) (_pr_currentThread = (_thread)) +#define _MD_LAST_THREAD() (_pr_lastThread) +#define _MD_SET_LAST_THREAD(t) (_pr_lastThread = t) + +#define _MD_GET_INTSOFF() (_pr_intsOff) +#define _MD_SET_INTSOFF(_val) (_pr_intsOff = _val) + + +/* The unbalanced curly braces in these two macros are intentional */ +#define _PR_LOCK_HEAP() { PRIntn _is; if (_pr_currentCPU) _PR_INTSOFF(_is); +#define _PR_UNLOCK_HEAP() if (_pr_currentCPU) _PR_INTSON(_is); } + +#endif /* _PR_LOCAL_THREADS_ONLY */ + +extern PRInt32 _native_threads_only; + +#if defined(_PR_GLOBAL_THREADS_ONLY) + +#define _MD_GET_INTSOFF() 0 +#define _MD_SET_INTSOFF(_val) +#define _PR_INTSOFF(_is) +#define _PR_FAST_INTSON(_is) +#define _PR_INTSON(_is) +#define _PR_THREAD_LOCK(_thread) +#define _PR_THREAD_UNLOCK(_thread) +#define _PR_RUNQ_LOCK(cpu) +#define _PR_RUNQ_UNLOCK(cpu) +#define _PR_SLEEPQ_LOCK(thread) +#define _PR_SLEEPQ_UNLOCK(thread) +#define _PR_MISCQ_LOCK(thread) +#define _PR_MISCQ_UNLOCK(thread) +#define _PR_CPU_LIST_LOCK() +#define _PR_CPU_LIST_UNLOCK() + +#define _PR_ADD_RUNQ(_thread, _cpu, _pri) +#define _PR_DEL_RUNQ(_thread) +#define _PR_ADD_SLEEPQ(_thread, _timeout) +#define _PR_DEL_SLEEPQ(_thread, _propogate) +#define _PR_ADD_JOINQ(_thread, _cpu) +#define _PR_DEL_JOINQ(_thread) +#define _PR_ADD_SUSPENDQ(_thread, _cpu) +#define _PR_DEL_SUSPENDQ(_thread) + +#define _PR_THREAD_SWITCH_CPU(_thread, _newCPU) + +#define _PR_IS_NATIVE_THREAD(thread) 1 +#define _PR_IS_NATIVE_THREAD_SUPPORTED() 1 + +#else + +#define _PR_INTSOFF(_is) \ + PR_BEGIN_MACRO \ + (_is) = _PR_MD_GET_INTSOFF(); \ + _PR_MD_SET_INTSOFF(1); \ + PR_END_MACRO + +#define _PR_FAST_INTSON(_is) \ + PR_BEGIN_MACRO \ + _PR_MD_SET_INTSOFF(_is); \ + PR_END_MACRO + +#define _PR_INTSON(_is) \ + PR_BEGIN_MACRO \ + if ((_is == 0) && (_PR_MD_CURRENT_CPU())->u.bits) \ + _PR_IntsOn((_PR_MD_CURRENT_CPU())); \ + _PR_MD_SET_INTSOFF(_is); \ + PR_END_MACRO + +#ifdef _PR_LOCAL_THREADS_ONLY + +#define _PR_IS_NATIVE_THREAD(thread) 0 +#define _PR_THREAD_LOCK(_thread) +#define _PR_THREAD_UNLOCK(_thread) +#define _PR_RUNQ_LOCK(cpu) +#define _PR_RUNQ_UNLOCK(cpu) +#define _PR_SLEEPQ_LOCK(thread) +#define _PR_SLEEPQ_UNLOCK(thread) +#define _PR_MISCQ_LOCK(thread) +#define _PR_MISCQ_UNLOCK(thread) +#define _PR_CPU_LIST_LOCK() +#define _PR_CPU_LIST_UNLOCK() + +#define _PR_ADD_RUNQ(_thread, _cpu, _pri) \ + PR_BEGIN_MACRO \ + PR_APPEND_LINK(&(_thread)->links, &_PR_RUNQ(_cpu)[_pri]); \ + _PR_RUNQREADYMASK(_cpu) |= (1L << _pri); \ + PR_END_MACRO + +#define _PR_DEL_RUNQ(_thread) \ + PR_BEGIN_MACRO \ + _PRCPU *_cpu = _thread->cpu; \ + PRInt32 _pri = _thread->priority; \ + PR_REMOVE_LINK(&(_thread)->links); \ + if (PR_CLIST_IS_EMPTY(&_PR_RUNQ(_cpu)[_pri])) \ + _PR_RUNQREADYMASK(_cpu) &= ~(1L << _pri); \ + PR_END_MACRO + +#define _PR_ADD_SLEEPQ(_thread, _timeout) \ + _PR_AddSleepQ(_thread, _timeout); + +#define _PR_DEL_SLEEPQ(_thread, _propogate) \ + _PR_DelSleepQ(_thread, _propogate); + +#define _PR_ADD_JOINQ(_thread, _cpu) \ + PR_APPEND_LINK(&(_thread)->links, &_PR_WAITINGTOJOINQ(_cpu)); + +#define _PR_DEL_JOINQ(_thread) \ + PR_REMOVE_LINK(&(_thread)->links); + +#define _PR_ADD_SUSPENDQ(_thread, _cpu) \ + PR_APPEND_LINK(&(_thread)->links, &_PR_SUSPENDQ(_cpu)); + +#define _PR_DEL_SUSPENDQ(_thread) \ + PR_REMOVE_LINK(&(_thread)->links); + +#define _PR_THREAD_SWITCH_CPU(_thread, _newCPU) + +#define _PR_IS_NATIVE_THREAD_SUPPORTED() 0 + +#else /* _PR_LOCAL_THREADS_ONLY */ + +/* These are for the "combined" thread model */ + +#define _PR_THREAD_LOCK(_thread) \ + _PR_MD_LOCK(&(_thread)->threadLock); + +#define _PR_THREAD_UNLOCK(_thread) \ + _PR_MD_UNLOCK(&(_thread)->threadLock); + +#define _PR_RUNQ_LOCK(_cpu) \ + PR_BEGIN_MACRO \ + _PR_MD_LOCK(&(_cpu)->queue->runQLock );\ + PR_END_MACRO + +#define _PR_RUNQ_UNLOCK(_cpu) \ + PR_BEGIN_MACRO \ + _PR_MD_UNLOCK(&(_cpu)->queue->runQLock );\ + PR_END_MACRO + +#define _PR_SLEEPQ_LOCK(_cpu) \ + _PR_MD_LOCK(&(_cpu)->queue->sleepQLock ); + +#define _PR_SLEEPQ_UNLOCK(_cpu) \ + _PR_MD_UNLOCK(&(_cpu)->queue->sleepQLock ); + +#define _PR_MISCQ_LOCK(_cpu) \ + _PR_MD_LOCK(&(_cpu)->queue->miscQLock ); + +#define _PR_MISCQ_UNLOCK(_cpu) \ + _PR_MD_UNLOCK(&(_cpu)->queue->miscQLock ); + +#define _PR_CPU_LIST_LOCK() _PR_MD_LOCK(&_pr_cpuLock) +#define _PR_CPU_LIST_UNLOCK() _PR_MD_UNLOCK(&_pr_cpuLock) + +#define QUEUE_RUN 0x1 +#define QUEUE_SLEEP 0x2 +#define QUEUE_JOIN 0x4 +#define QUEUE_SUSPEND 0x8 +#define QUEUE_LOCK 0x10 + +#define _PR_ADD_RUNQ(_thread, _cpu, _pri) \ + PR_BEGIN_MACRO \ + PR_APPEND_LINK(&(_thread)->links, &_PR_RUNQ(_cpu)[_pri]); \ + _PR_RUNQREADYMASK(_cpu) |= (1L << _pri); \ + PR_ASSERT((_thread)->queueCount == 0); \ + (_thread)->queueCount = QUEUE_RUN; \ + PR_END_MACRO + +#define _PR_DEL_RUNQ(_thread) \ + PR_BEGIN_MACRO \ + _PRCPU *_cpu = _thread->cpu; \ + PRInt32 _pri = _thread->priority; \ + PR_REMOVE_LINK(&(_thread)->links); \ + if (PR_CLIST_IS_EMPTY(&_PR_RUNQ(_cpu)[_pri])) \ + _PR_RUNQREADYMASK(_cpu) &= ~(1L << _pri); \ + PR_ASSERT((_thread)->queueCount == QUEUE_RUN);\ + (_thread)->queueCount = 0; \ + PR_END_MACRO + +#define _PR_ADD_SLEEPQ(_thread, _timeout) \ + PR_ASSERT((_thread)->queueCount == 0); \ + (_thread)->queueCount = QUEUE_SLEEP; \ + _PR_AddSleepQ(_thread, _timeout); + +#define _PR_DEL_SLEEPQ(_thread, _propogate) \ + PR_ASSERT((_thread)->queueCount == QUEUE_SLEEP);\ + (_thread)->queueCount = 0; \ + _PR_DelSleepQ(_thread, _propogate); + +#define _PR_ADD_JOINQ(_thread, _cpu) \ + PR_ASSERT((_thread)->queueCount == 0); \ + (_thread)->queueCount = QUEUE_JOIN; \ + PR_APPEND_LINK(&(_thread)->links, &_PR_WAITINGTOJOINQ(_cpu)); + +#define _PR_DEL_JOINQ(_thread) \ + PR_ASSERT((_thread)->queueCount == QUEUE_JOIN);\ + (_thread)->queueCount = 0; \ + PR_REMOVE_LINK(&(_thread)->links); + +#define _PR_ADD_SUSPENDQ(_thread, _cpu) \ + PR_ASSERT((_thread)->queueCount == 0); \ + (_thread)->queueCount = QUEUE_SUSPEND; \ + PR_APPEND_LINK(&(_thread)->links, &_PR_SUSPENDQ(_cpu)); + +#define _PR_DEL_SUSPENDQ(_thread) \ + PR_ASSERT((_thread)->queueCount == QUEUE_SUSPEND);\ + (_thread)->queueCount = 0; \ + PR_REMOVE_LINK(&(_thread)->links); + +#define _PR_THREAD_SWITCH_CPU(_thread, _newCPU) \ + (_thread)->cpu = (_newCPU); + +#define _PR_IS_NATIVE_THREAD(thread) (thread->flags & _PR_GLOBAL_SCOPE) +#define _PR_IS_NATIVE_THREAD_SUPPORTED() 1 + +#endif /* _PR_LOCAL_THREADS_ONLY */ + +#endif /* _PR_GLOBAL_THREADS_ONLY */ + +#define _PR_SET_RESCHED_FLAG() _PR_MD_CURRENT_CPU()->u.missed[3] = 1 +#define _PR_CLEAR_RESCHED_FLAG() _PR_MD_CURRENT_CPU()->u.missed[3] = 0 + +extern _PRInterruptTable _pr_interruptTable[]; + +/* Bits for _pr_interruptState.u.missed[0,1] */ +#define _PR_MISSED_CLOCK 0x1 +#define _PR_MISSED_IO 0x2 +#define _PR_MISSED_CHILD 0x4 + +extern void _PR_IntsOn(_PRCPU *cpu); + +NSPR_API(void) _PR_WakeupCPU(void); +NSPR_API(void) _PR_PauseCPU(void); + +/************************************************************************/ + +#define _PR_LOCK_LOCK(_lock) \ + _PR_MD_LOCK(&(_lock)->ilock); +#define _PR_LOCK_UNLOCK(_lock) \ + _PR_MD_UNLOCK(&(_lock)->ilock); + +extern void _PR_UnblockLockWaiter(PRLock *lock); +extern PRStatus _PR_InitLock(PRLock *lock); +extern void _PR_FreeLock(PRLock *lock); + +#define _PR_LOCK_PTR(_qp) \ + ((PRLock*) ((char*) (_qp) - offsetof(PRLock,links))) + +/************************************************************************/ + +#define _PR_CVAR_LOCK(_cvar) \ + _PR_MD_LOCK(&(_cvar)->ilock); +#define _PR_CVAR_UNLOCK(_cvar) \ + _PR_MD_UNLOCK(&(_cvar)->ilock); + +extern PRStatus _PR_InitCondVar(PRCondVar *cvar, PRLock *lock); +extern void _PR_FreeCondVar(PRCondVar *cvar); +extern PRStatus _PR_WaitCondVar( + PRThread *thread, PRCondVar *cvar, PRLock *lock, PRIntervalTime timeout); +extern void _PR_NotifyCondVar(PRCondVar *cvar, PRThread *me); +extern PRUint32 _PR_CondVarToString(PRCondVar *cvar, char *buf, PRUint32 buflen); + +NSPR_API(void) _PR_Notify(PRMonitor *mon, PRBool all, PRBool sticky); + +/* PRThread.flags */ +#define _PR_SYSTEM 0x01 +#define _PR_INTERRUPT 0x02 +#define _PR_ATTACHED 0x04 /* created via PR_AttachThread */ +#define _PR_PRIMORDIAL 0x08 /* the thread that called PR_Init */ +#define _PR_ON_SLEEPQ 0x10 /* thread is on the sleepQ */ +#define _PR_ON_PAUSEQ 0x20 /* thread is on the pauseQ */ +#define _PR_SUSPENDING 0x40 /* thread wants to suspend */ +#define _PR_GLOBAL_SCOPE 0x80 /* thread is global scope */ +#define _PR_IDLE_THREAD 0x200 /* this is an idle thread */ +#define _PR_GCABLE_THREAD 0x400 /* this is a collectable thread */ +#define _PR_BOUND_THREAD 0x800 /* a bound thread */ +#define _PR_INTERRUPT_BLOCKED 0x1000 /* interrupts blocked */ + +/* PRThread.state */ +#define _PR_UNBORN 0 +#define _PR_RUNNABLE 1 +#define _PR_RUNNING 2 +#define _PR_LOCK_WAIT 3 +#define _PR_COND_WAIT 4 +#define _PR_JOIN_WAIT 5 +#define _PR_IO_WAIT 6 +#define _PR_SUSPENDED 7 +#define _PR_DEAD_STATE 8 /* for debugging */ + +/* PRThreadStack.flags */ +#define _PR_STACK_VM 0x1 /* using vm instead of malloc */ +#define _PR_STACK_MAPPED 0x2 /* vm is mapped */ +#define _PR_STACK_PRIMORDIAL 0x4 /* stack for primordial thread */ + +/* +** If the default stcksize from the client is zero, we need to pick a machine +** dependent value. This is only for standard user threads. For custom threads, +** 0 has a special meaning. +** Adjust stackSize. Round up to a page boundary. +*/ + +#ifndef _MD_MINIMUM_STACK_SIZE +#define _MD_MINIMUM_STACK_SIZE 0 +#endif + +#if (!defined(HAVE_CUSTOM_USER_THREADS)) +#define _PR_ADJUST_STACKSIZE(stackSize) \ + PR_BEGIN_MACRO \ + if (stackSize == 0) \ + stackSize = _MD_DEFAULT_STACK_SIZE; \ + if (stackSize < _MD_MINIMUM_STACK_SIZE) \ + stackSize = _MD_MINIMUM_STACK_SIZE; \ + stackSize = (stackSize + (1 << _pr_pageShift) - 1) >> _pr_pageShift; \ + stackSize <<= _pr_pageShift; \ + PR_END_MACRO +#else +#define _PR_ADJUST_STACKSIZE(stackSize) +#endif + +#define _PR_IS_GCABLE_THREAD(thr) ((thr)->flags & _PR_GCABLE_THREAD) + +#define _PR_PENDING_INTERRUPT(thr) \ + (!((thr)->flags & _PR_INTERRUPT_BLOCKED) && ((thr)->flags & _PR_INTERRUPT)) +#define _PR_THREAD_BLOCK_INTERRUPT(thr) \ + (thr->flags |= _PR_INTERRUPT_BLOCKED) +#define _PR_THREAD_UNBLOCK_INTERRUPT(thr) \ + (thr->flags &= ~_PR_INTERRUPT_BLOCKED) + +#define _PR_THREAD_PTR(_qp) \ + ((PRThread*) ((char*) (_qp) - offsetof(PRThread,links))) + +#define _PR_ACTIVE_THREAD_PTR(_qp) \ + ((PRThread*) ((char*) (_qp) - offsetof(PRThread,active))) + +#define _PR_THREAD_CONDQ_PTR(_qp) \ + ((PRThread*) ((char*) (_qp) - offsetof(PRThread,waitQLinks))) + +#define _PR_THREAD_MD_TO_PTR(_md) \ + ((PRThread*) ((char*) (_md) - offsetof(PRThread,md))) + +#define _PR_THREAD_STACK_TO_PTR(_stack) \ + ((PRThread*) (_stack->thr)) + +extern PRCList _pr_active_local_threadQ; +extern PRCList _pr_active_global_threadQ; +extern PRCList _pr_cpuQ; +extern _MDLock _pr_cpuLock; +extern PRInt32 _pr_md_idle_cpus; + +#define _PR_ACTIVE_LOCAL_THREADQ() _pr_active_local_threadQ +#define _PR_ACTIVE_GLOBAL_THREADQ() _pr_active_global_threadQ +#define _PR_CPUQ() _pr_cpuQ +#define _PR_RUNQ(_cpu) ((_cpu)->queue->runQ) +#define _PR_RUNQREADYMASK(_cpu) ((_cpu)->queue->runQReadyMask) +#define _PR_SLEEPQ(_cpu) ((_cpu)->queue->sleepQ) +#define _PR_SLEEPQMAX(_cpu) ((_cpu)->queue->sleepQmax) +#define _PR_PAUSEQ(_cpu) ((_cpu)->queue->pauseQ) +#define _PR_SUSPENDQ(_cpu) ((_cpu)->queue->suspendQ) +#define _PR_WAITINGTOJOINQ(_cpu) ((_cpu)->queue->waitingToJoinQ) + +extern PRUint32 _pr_recycleThreads; /* Flag for behavior on thread cleanup */ +extern PRLock *_pr_deadQLock; +extern PRUint32 _pr_numNativeDead; +extern PRUint32 _pr_numUserDead; +extern PRCList _pr_deadNativeQ; +extern PRCList _pr_deadUserQ; +#define _PR_DEADNATIVEQ _pr_deadNativeQ +#define _PR_DEADUSERQ _pr_deadUserQ +#define _PR_DEADQ_LOCK PR_Lock(_pr_deadQLock); +#define _PR_DEADQ_UNLOCK PR_Unlock(_pr_deadQLock); +#define _PR_INC_DEADNATIVE (_pr_numNativeDead++) +#define _PR_DEC_DEADNATIVE (_pr_numNativeDead--) +#define _PR_NUM_DEADNATIVE (_pr_numNativeDead) +#define _PR_INC_DEADUSER (_pr_numUserDead++) +#define _PR_DEC_DEADUSER (_pr_numUserDead--) +#define _PR_NUM_DEADUSER (_pr_numUserDead) + +extern PRUint32 _pr_utid; + +extern struct _PRCPU *_pr_primordialCPU; + +extern PRLock *_pr_activeLock; /* lock for userActive and systemActive */ +extern PRInt32 _pr_userActive; /* number of active user threads */ +extern PRInt32 _pr_systemActive; /* number of active system threads */ +extern PRInt32 _pr_primordialExitCount; /* number of user threads left + * before the primordial thread + * can exit. */ +extern PRCondVar *_pr_primordialExitCVar; /* the condition variable for + * notifying the primordial thread + * when all other user threads + * have terminated. */ + +extern PRUintn _pr_maxPTDs; + +extern PRLock *_pr_terminationCVLock; + +/************************************************************************* +* Internal routines either called by PR itself or from machine-dependent * +* code. * +*************************************************************************/ + +extern void _PR_ClockInterrupt(void); + +extern void _PR_Schedule(void); +extern void _PR_SetThreadPriority( + PRThread* thread, PRThreadPriority priority); + +/*********************************************************************** +** FUNCTION: _PR_NewSegment() +** DESCRIPTION: +** Allocate a memory segment. The "size" value is rounded up to the +** native system page size and a page aligned portion of memory is +** returned. This memory is not part of the malloc heap. If "vaddr" is +** not NULL then PR tries to allocate the segment at the desired virtual +** address. +** INPUTS: size: size of the desired memory segment +** vaddr: address at which the newly aquired segment is to be +** mapped into memory. +** OUTPUTS: a memory segment is allocated, a PRSegment is allocated +** RETURN: pointer to PRSegment +***********************************************************************/ +extern PRSegment* _PR_NewSegment(PRUint32 size, void *vaddr); + +/*********************************************************************** +** FUNCTION: _PR_DestroySegment() +** DESCRIPTION: +** The memory segment and the PRSegment are freed +** INPUTS: seg: pointer to PRSegment to be freed +** OUTPUTS: the the PRSegment and its associated memory segment are freed +** RETURN: void +***********************************************************************/ +extern void _PR_DestroySegment(PRSegment *seg); + +extern PRThreadStack * _PR_NewStack(PRUint32 stackSize); +extern void _PR_FreeStack(PRThreadStack *stack); +extern PRBool _PR_NotifyThread (PRThread *thread, PRThread *me); +extern void _PR_NotifyLockedThread (PRThread *thread); + +NSPR_API(void) _PR_AddSleepQ(PRThread *thread, PRIntervalTime timeout); +NSPR_API(void) _PR_DelSleepQ(PRThread *thread, PRBool propogate_time); + +extern void _PR_AddThreadToRunQ(PRThread *me, PRThread *thread); + +NSPR_API(PRThread*) _PR_CreateThread(PRThreadType type, + void (*start)(void *arg), + void *arg, + PRThreadPriority priority, + PRThreadScope scope, + PRThreadState state, + PRUint32 stackSize, + PRUint32 flags); + +extern void _PR_NativeDestroyThread(PRThread *thread); +extern void _PR_UserDestroyThread(PRThread *thread); + +extern PRThread* _PRI_AttachThread( + PRThreadType type, PRThreadPriority priority, + PRThreadStack *stack, PRUint32 flags); + +extern void _PRI_DetachThread(void); + + +#define _PR_IO_PENDING(_thread) ((_thread)->io_pending) + +NSPR_API(void) _PR_MD_INIT_CPUS(); +#define _PR_MD_INIT_CPUS _MD_INIT_CPUS + +NSPR_API(void) _PR_MD_WAKEUP_CPUS(); +#define _PR_MD_WAKEUP_CPUS _MD_WAKEUP_CPUS + +/* Interrupts related */ + +NSPR_API(void) _PR_MD_START_INTERRUPTS(void); +#define _PR_MD_START_INTERRUPTS _MD_START_INTERRUPTS + +NSPR_API(void) _PR_MD_STOP_INTERRUPTS(void); +#define _PR_MD_STOP_INTERRUPTS _MD_STOP_INTERRUPTS + +NSPR_API(void) _PR_MD_ENABLE_CLOCK_INTERRUPTS(void); +#define _PR_MD_ENABLE_CLOCK_INTERRUPTS _MD_ENABLE_CLOCK_INTERRUPTS + +NSPR_API(void) _PR_MD_DISABLE_CLOCK_INTERRUPTS(void); +#define _PR_MD_DISABLE_CLOCK_INTERRUPTS _MD_DISABLE_CLOCK_INTERRUPTS + +NSPR_API(void) _PR_MD_BLOCK_CLOCK_INTERRUPTS(void); +#define _PR_MD_BLOCK_CLOCK_INTERRUPTS _MD_BLOCK_CLOCK_INTERRUPTS + +NSPR_API(void) _PR_MD_UNBLOCK_CLOCK_INTERRUPTS(void); +#define _PR_MD_UNBLOCK_CLOCK_INTERRUPTS _MD_UNBLOCK_CLOCK_INTERRUPTS + +/* The _PR_MD_WAIT_LOCK and _PR_MD_WAKEUP_WAITER functions put to sleep and + * awaken a thread which is waiting on a lock or cvar. + */ +extern PRStatus _PR_MD_WAIT(PRThread *, PRIntervalTime timeout); +#define _PR_MD_WAIT _MD_WAIT + +extern PRStatus _PR_MD_WAKEUP_WAITER(PRThread *); +#define _PR_MD_WAKEUP_WAITER _MD_WAKEUP_WAITER + +#ifndef _PR_LOCAL_THREADS_ONLY /* not if only local threads supported */ +NSPR_API(void) _PR_MD_CLOCK_INTERRUPT(void); +#define _PR_MD_CLOCK_INTERRUPT _MD_CLOCK_INTERRUPT +#endif + +/* Stack debugging */ +NSPR_API(void) _PR_MD_INIT_STACK(PRThreadStack *ts, PRIntn redzone); +#define _PR_MD_INIT_STACK _MD_INIT_STACK + +NSPR_API(void) _PR_MD_CLEAR_STACK(PRThreadStack* ts); +#define _PR_MD_CLEAR_STACK _MD_CLEAR_STACK + +/* CPU related */ +NSPR_API(PRInt32) _PR_MD_GET_INTSOFF(void); +#define _PR_MD_GET_INTSOFF _MD_GET_INTSOFF + +NSPR_API(void) _PR_MD_SET_INTSOFF(PRInt32 _val); +#define _PR_MD_SET_INTSOFF _MD_SET_INTSOFF + +NSPR_API(_PRCPU*) _PR_MD_CURRENT_CPU(void); +#define _PR_MD_CURRENT_CPU _MD_CURRENT_CPU + +NSPR_API(void) _PR_MD_SET_CURRENT_CPU(_PRCPU *cpu); +#define _PR_MD_SET_CURRENT_CPU _MD_SET_CURRENT_CPU + +NSPR_API(void) _PR_MD_INIT_RUNNING_CPU(_PRCPU *cpu); +#define _PR_MD_INIT_RUNNING_CPU _MD_INIT_RUNNING_CPU + +/* + * Returns the number of threads awoken or 0 if a timeout occurred; + */ +extern PRInt32 _PR_MD_PAUSE_CPU(PRIntervalTime timeout); +#define _PR_MD_PAUSE_CPU _MD_PAUSE_CPU + +extern void _PR_MD_CLEANUP_BEFORE_EXIT(void); +#define _PR_MD_CLEANUP_BEFORE_EXIT _MD_CLEANUP_BEFORE_EXIT + +extern void _PR_MD_EXIT(PRIntn status); +#define _PR_MD_EXIT _MD_EXIT + +/* Locks related */ + +NSPR_API(void) _PR_MD_INIT_LOCKS(void); +#define _PR_MD_INIT_LOCKS _MD_INIT_LOCKS + +NSPR_API(PRStatus) _PR_MD_NEW_LOCK(_MDLock *md); +#define _PR_MD_NEW_LOCK _MD_NEW_LOCK + +NSPR_API(void) _PR_MD_FREE_LOCK(_MDLock *md); +#define _PR_MD_FREE_LOCK _MD_FREE_LOCK + +NSPR_API(void) _PR_MD_LOCK(_MDLock *md); +#define _PR_MD_LOCK _MD_LOCK + +/* Return 0 on success, a nonzero value on failure. */ +NSPR_API(PRIntn) _PR_MD_TEST_AND_LOCK(_MDLock *md); +#define _PR_MD_TEST_AND_LOCK _MD_TEST_AND_LOCK + +NSPR_API(void) _PR_MD_UNLOCK(_MDLock *md); +#define _PR_MD_UNLOCK _MD_UNLOCK + +NSPR_API(void) _PR_MD_IOQ_LOCK(void); +#define _PR_MD_IOQ_LOCK _MD_IOQ_LOCK + +NSPR_API(void) _PR_MD_IOQ_UNLOCK(void); +#define _PR_MD_IOQ_UNLOCK _MD_IOQ_UNLOCK + +#ifndef _PR_LOCAL_THREADS_ONLY /* not if only local threads supported */ +/* Semaphore related -- only for native threads */ +#ifdef HAVE_CVAR_BUILT_ON_SEM +NSPR_API(void) _PR_MD_NEW_SEM(_MDSemaphore *md, PRUintn value); +#define _PR_MD_NEW_SEM _MD_NEW_SEM + +NSPR_API(void) _PR_MD_DESTROY_SEM(_MDSemaphore *md); +#define _PR_MD_DESTROY_SEM _MD_DESTROY_SEM + +NSPR_API(PRStatus) _PR_MD_TIMED_WAIT_SEM( + _MDSemaphore *md, PRIntervalTime timeout); +#define _PR_MD_TIMED_WAIT_SEM _MD_TIMED_WAIT_SEM + +NSPR_API(PRStatus) _PR_MD_WAIT_SEM(_MDSemaphore *md); +#define _PR_MD_WAIT_SEM _MD_WAIT_SEM + +NSPR_API(void) _PR_MD_POST_SEM(_MDSemaphore *md); +#define _PR_MD_POST_SEM _MD_POST_SEM +#endif /* HAVE_CVAR_BUILT_ON_SEM */ + +#endif + +/* Condition Variables related -- only for native threads */ + +#ifndef _PR_LOCAL_THREADS_ONLY /* not if only local threads supported */ +NSPR_API(PRInt32) _PR_MD_NEW_CV(_MDCVar *md); +#define _PR_MD_NEW_CV _MD_NEW_CV + +NSPR_API(void) _PR_MD_FREE_CV(_MDCVar *md); +#define _PR_MD_FREE_CV _MD_FREE_CV + +NSPR_API(void) _PR_MD_WAIT_CV( + _MDCVar *mdCVar,_MDLock *mdLock,PRIntervalTime timeout); +#define _PR_MD_WAIT_CV _MD_WAIT_CV + +NSPR_API(void) _PR_MD_NOTIFY_CV(_MDCVar *md, _MDLock *lock); +#define _PR_MD_NOTIFY_CV _MD_NOTIFY_CV + +NSPR_API(void) _PR_MD_NOTIFYALL_CV(_MDCVar *md, _MDLock *lock); +#define _PR_MD_NOTIFYALL_CV _MD_NOTIFYALL_CV +#endif /* _PR_LOCAL_THREADS_ONLY */ + +/* Threads related */ +NSPR_API(PRThread*) _PR_MD_CURRENT_THREAD(void); +#define _PR_MD_CURRENT_THREAD _MD_CURRENT_THREAD + +NSPR_API(PRThread*) _PR_MD_GET_ATTACHED_THREAD(void); +#define _PR_MD_GET_ATTACHED_THREAD _MD_GET_ATTACHED_THREAD + +NSPR_API(PRThread*) _PR_MD_LAST_THREAD(void); +#define _PR_MD_LAST_THREAD _MD_LAST_THREAD + +NSPR_API(void) _PR_MD_SET_CURRENT_THREAD(PRThread *thread); +#define _PR_MD_SET_CURRENT_THREAD _MD_SET_CURRENT_THREAD + +NSPR_API(void) _PR_MD_SET_LAST_THREAD(PRThread *thread); +#define _PR_MD_SET_LAST_THREAD _MD_SET_LAST_THREAD + +extern PRStatus _PR_MD_INIT_THREAD(PRThread *thread); +#define _PR_MD_INIT_THREAD _MD_INIT_THREAD + +extern void _PR_MD_EXIT_THREAD(PRThread *thread); +#define _PR_MD_EXIT_THREAD _MD_EXIT_THREAD + +#ifndef _PR_LOCAL_THREADS_ONLY /* not if only local threads supported */ + +NSPR_API(PRStatus) _PR_MD_INIT_ATTACHED_THREAD(PRThread *thread); +#define _PR_MD_INIT_ATTACHED_THREAD _MD_INIT_ATTACHED_THREAD + +extern void _PR_MD_SUSPEND_THREAD(PRThread *thread); +#define _PR_MD_SUSPEND_THREAD _MD_SUSPEND_THREAD + +extern void _PR_MD_RESUME_THREAD(PRThread *thread); +#define _PR_MD_RESUME_THREAD _MD_RESUME_THREAD + +extern void _PR_MD_SUSPEND_CPU(_PRCPU *cpu); +#define _PR_MD_SUSPEND_CPU _MD_SUSPEND_CPU + +extern void _PR_MD_RESUME_CPU(_PRCPU *cpu); +#define _PR_MD_RESUME_CPU _MD_RESUME_CPU + +extern void _PR_MD_BEGIN_SUSPEND_ALL(void); +#define _PR_MD_BEGIN_SUSPEND_ALL _MD_BEGIN_SUSPEND_ALL + +extern void _PR_MD_END_SUSPEND_ALL(void); +#define _PR_MD_END_SUSPEND_ALL _MD_END_SUSPEND_ALL + +extern void _PR_MD_BEGIN_RESUME_ALL(void); +#define _PR_MD_BEGIN_RESUME_ALL _MD_BEGIN_RESUME_ALL + +extern void _PR_MD_END_RESUME_ALL(void); +#define _PR_MD_END_RESUME_ALL _MD_END_RESUME_ALL + +#endif /* !_PR_LOCAL_THREADS_ONLY */ + +extern void _PR_MD_CLEAN_THREAD(PRThread *thread); +#define _PR_MD_CLEAN_THREAD _MD_CLEAN_THREAD + +#ifdef HAVE_CUSTOM_USER_THREADS +extern void _PR_MD_CREATE_PRIMORDIAL_USER_THREAD(PRThread *); +#define _PR_MD_CREATE_PRIMORDIAL_USER_THREAD _MD_CREATE_PRIMORDIAL_USER_THREAD + +extern PRThread* _PR_MD_CREATE_USER_THREAD( + PRUint32 stacksize, + void (*start)(void *), + void *arg); +#define _PR_MD_CREATE_USER_THREAD _MD_CREATE_USER_THREAD +#endif + +extern PRStatus _PR_MD_CREATE_THREAD( + PRThread *thread, + void (*start) (void *), + PRThreadPriority priority, + PRThreadScope scope, + PRThreadState state, + PRUint32 stackSize); +#define _PR_MD_CREATE_THREAD _MD_CREATE_THREAD + +extern void _PR_MD_JOIN_THREAD(_MDThread *md); +#define _PR_MD_JOIN_THREAD _MD_JOIN_THREAD + +extern void _PR_MD_END_THREAD(void); +#define _PR_MD_END_THREAD _MD_END_THREAD + +extern void _PR_MD_YIELD(void); +#define _PR_MD_YIELD _MD_YIELD + +extern void _PR_MD_SET_PRIORITY(_MDThread *md, PRThreadPriority newPri); +#define _PR_MD_SET_PRIORITY _MD_SET_PRIORITY + +extern void _PR_MD_SET_CURRENT_THREAD_NAME(const char *name); +#define _PR_MD_SET_CURRENT_THREAD_NAME _MD_SET_CURRENT_THREAD_NAME + +NSPR_API(void) _PR_MD_SUSPENDALL(void); +#define _PR_MD_SUSPENDALL _MD_SUSPENDALL + +NSPR_API(void) _PR_MD_RESUMEALL(void); +#define _PR_MD_RESUMEALL _MD_RESUMEALL + +extern void _PR_MD_INIT_CONTEXT( + PRThread *thread, char *top, void (*start) (void), PRBool *status); +#define _PR_MD_INIT_CONTEXT _MD_INIT_CONTEXT + +extern void _PR_MD_SWITCH_CONTEXT(PRThread *thread); +#define _PR_MD_SWITCH_CONTEXT _MD_SWITCH_CONTEXT + +extern void _PR_MD_RESTORE_CONTEXT(PRThread *thread); +#define _PR_MD_RESTORE_CONTEXT _MD_RESTORE_CONTEXT + +/* Segment related */ +extern void _PR_MD_INIT_SEGS(void); +#define _PR_MD_INIT_SEGS _MD_INIT_SEGS + +extern PRStatus _PR_MD_ALLOC_SEGMENT(PRSegment *seg, PRUint32 size, void *vaddr); +#define _PR_MD_ALLOC_SEGMENT _MD_ALLOC_SEGMENT + +extern void _PR_MD_FREE_SEGMENT(PRSegment *seg); +#define _PR_MD_FREE_SEGMENT _MD_FREE_SEGMENT + +/* Directory enumeration related */ +extern PRStatus _PR_MD_OPEN_DIR(_MDDir *md,const char *name); +#define _PR_MD_OPEN_DIR _MD_OPEN_DIR + +extern char * _PR_MD_READ_DIR(_MDDir *md, PRIntn flags); +#define _PR_MD_READ_DIR _MD_READ_DIR + +extern PRInt32 _PR_MD_CLOSE_DIR(_MDDir *md); +#define _PR_MD_CLOSE_DIR _MD_CLOSE_DIR + +/* Named semaphores related */ +extern PRSem * _PR_MD_OPEN_SEMAPHORE( + const char *osname, PRIntn flags, PRIntn mode, PRUintn value); +#define _PR_MD_OPEN_SEMAPHORE _MD_OPEN_SEMAPHORE + +extern PRStatus _PR_MD_WAIT_SEMAPHORE(PRSem *sem); +#define _PR_MD_WAIT_SEMAPHORE _MD_WAIT_SEMAPHORE + +extern PRStatus _PR_MD_POST_SEMAPHORE(PRSem *sem); +#define _PR_MD_POST_SEMAPHORE _MD_POST_SEMAPHORE + +extern PRStatus _PR_MD_CLOSE_SEMAPHORE(PRSem *sem); +#define _PR_MD_CLOSE_SEMAPHORE _MD_CLOSE_SEMAPHORE + +extern PRStatus _PR_MD_DELETE_SEMAPHORE(const char *osname); +#define _PR_MD_DELETE_SEMAPHORE _MD_DELETE_SEMAPHORE + +/* I/O related */ +extern void _PR_MD_INIT_FILEDESC(PRFileDesc *fd); +#define _PR_MD_INIT_FILEDESC _MD_INIT_FILEDESC + +extern void _PR_MD_MAKE_NONBLOCK(PRFileDesc *fd); +#define _PR_MD_MAKE_NONBLOCK _MD_MAKE_NONBLOCK + +/* File I/O related */ +extern PROsfd _PR_MD_OPEN(const char *name, PRIntn osflags, PRIntn mode); +#define _PR_MD_OPEN _MD_OPEN + +extern PROsfd _PR_MD_OPEN_FILE(const char *name, PRIntn osflags, PRIntn mode); +#define _PR_MD_OPEN_FILE _MD_OPEN_FILE + +extern PRInt32 _PR_MD_CLOSE_FILE(PROsfd osfd); +#define _PR_MD_CLOSE_FILE _MD_CLOSE_FILE + +extern PRInt32 _PR_MD_READ(PRFileDesc *fd, void *buf, PRInt32 amount); +#define _PR_MD_READ _MD_READ + +extern PRInt32 _PR_MD_WRITE(PRFileDesc *fd, const void *buf, PRInt32 amount); +#define _PR_MD_WRITE _MD_WRITE + +extern PRInt32 _PR_MD_WRITEV( + PRFileDesc *fd, const struct PRIOVec *iov, + PRInt32 iov_size, PRIntervalTime timeout); +#define _PR_MD_WRITEV _MD_WRITEV + +extern PRInt32 _PR_MD_FSYNC(PRFileDesc *fd); +#define _PR_MD_FSYNC _MD_FSYNC + +extern PRInt32 _PR_MD_DELETE(const char *name); +#define _PR_MD_DELETE _MD_DELETE + +extern PRInt32 _PR_MD_RENAME(const char *from, const char *to); +#define _PR_MD_RENAME _MD_RENAME + +extern PRInt32 _PR_MD_ACCESS(const char *name, PRAccessHow how); +#define _PR_MD_ACCESS _MD_ACCESS + +extern PRInt32 _PR_MD_STAT(const char *name, struct stat *buf); +#define _PR_MD_STAT _MD_STAT + +extern PRInt32 _PR_MD_MKDIR(const char *name, PRIntn mode); +#define _PR_MD_MKDIR _MD_MKDIR + +extern PRInt32 _PR_MD_MAKE_DIR(const char *name, PRIntn mode); +#define _PR_MD_MAKE_DIR _MD_MAKE_DIR + +extern PRInt32 _PR_MD_RMDIR(const char *name); +#define _PR_MD_RMDIR _MD_RMDIR + +#ifdef MOZ_UNICODE +/* UTF16 File I/O related */ +extern PRStatus _PR_MD_OPEN_DIR_UTF16(_MDDirUTF16 *md, const PRUnichar *name); +#define _PR_MD_OPEN_DIR_UTF16 _MD_OPEN_DIR_UTF16 + +extern PROsfd _PR_MD_OPEN_FILE_UTF16(const PRUnichar *name, PRIntn osflags, PRIntn mode); +#define _PR_MD_OPEN_FILE_UTF16 _MD_OPEN_FILE_UTF16 + +extern PRUnichar * _PR_MD_READ_DIR_UTF16(_MDDirUTF16 *md, PRIntn flags); +#define _PR_MD_READ_DIR_UTF16 _MD_READ_DIR_UTF16 + +extern PRInt32 _PR_MD_CLOSE_DIR_UTF16(_MDDirUTF16 *md); +#define _PR_MD_CLOSE_DIR_UTF16 _MD_CLOSE_DIR_UTF16 + +extern PRInt32 _PR_MD_GETFILEINFO64_UTF16(const PRUnichar *fn, PRFileInfo64 *info); +#define _PR_MD_GETFILEINFO64_UTF16 _MD_GETFILEINFO64_UTF16 +#endif /* MOZ_UNICODE */ + +/* Socket I/O related */ +extern void _PR_MD_INIT_IO(void); +#define _PR_MD_INIT_IO _MD_INIT_IO + +extern PRInt32 _PR_MD_CLOSE_SOCKET(PROsfd osfd); +#define _PR_MD_CLOSE_SOCKET _MD_CLOSE_SOCKET + +extern PRInt32 _PR_MD_CONNECT( + PRFileDesc *fd, const PRNetAddr *addr, + PRUint32 addrlen, PRIntervalTime timeout); +#define _PR_MD_CONNECT _MD_CONNECT + +extern PROsfd _PR_MD_ACCEPT( + PRFileDesc *fd, PRNetAddr *addr, + PRUint32 *addrlen, PRIntervalTime timeout); +#define _PR_MD_ACCEPT _MD_ACCEPT + +extern PRInt32 _PR_MD_BIND(PRFileDesc *fd, const PRNetAddr *addr, PRUint32 addrlen); +#define _PR_MD_BIND _MD_BIND + +extern PRInt32 _PR_MD_LISTEN(PRFileDesc *fd, PRIntn backlog); +#define _PR_MD_LISTEN _MD_LISTEN + +extern PRInt32 _PR_MD_SHUTDOWN(PRFileDesc *fd, PRIntn how); +#define _PR_MD_SHUTDOWN _MD_SHUTDOWN + +extern PRInt32 _PR_MD_RECV(PRFileDesc *fd, void *buf, PRInt32 amount, + PRIntn flags, PRIntervalTime timeout); +#define _PR_MD_RECV _MD_RECV + +extern PRInt32 _PR_MD_SEND( + PRFileDesc *fd, const void *buf, PRInt32 amount, PRIntn flags, + PRIntervalTime timeout); +#define _PR_MD_SEND _MD_SEND + +extern PRInt32 _PR_MD_ACCEPT_READ(PRFileDesc *sd, PROsfd *newSock, + PRNetAddr **raddr, void *buf, PRInt32 amount, + PRIntervalTime timeout); +#define _PR_MD_ACCEPT_READ _MD_ACCEPT_READ + +#ifdef WIN32 +extern PROsfd _PR_MD_FAST_ACCEPT(PRFileDesc *fd, PRNetAddr *addr, + PRUint32 *addrlen, PRIntervalTime timeout, + PRBool fast, + _PR_AcceptTimeoutCallback callback, + void *callbackArg); + +extern PRInt32 _PR_MD_FAST_ACCEPT_READ(PRFileDesc *sd, PROsfd *newSock, + PRNetAddr **raddr, void *buf, PRInt32 amount, + PRIntervalTime timeout, PRBool fast, + _PR_AcceptTimeoutCallback callback, + void *callbackArg); + +extern void _PR_MD_UPDATE_ACCEPT_CONTEXT(PROsfd s, PROsfd ls); +#define _PR_MD_UPDATE_ACCEPT_CONTEXT _MD_UPDATE_ACCEPT_CONTEXT +/* + * The NSPR epoch (00:00:00 1 Jan 1970 UTC) in FILETIME. + * We store the value in a PRTime variable for convenience. + * This constant is used by _PR_FileTimeToPRTime(). + * This is defined in ntmisc.c + */ +extern const PRTime _pr_filetime_offset; +#endif /* WIN32 */ + +extern PRInt32 _PR_MD_SENDFILE( + PRFileDesc *sock, PRSendFileData *sfd, + PRInt32 flags, PRIntervalTime timeout); +#define _PR_MD_SENDFILE _MD_SENDFILE + +extern PRStatus _PR_MD_GETSOCKNAME( + PRFileDesc *fd, PRNetAddr *addr, PRUint32 *addrlen); +#define _PR_MD_GETSOCKNAME _MD_GETSOCKNAME + +extern PRStatus _PR_MD_GETPEERNAME( + PRFileDesc *fd, PRNetAddr *addr, PRUint32 *addrlen); +#define _PR_MD_GETPEERNAME _MD_GETPEERNAME + +extern PRStatus _PR_MD_GETSOCKOPT( + PRFileDesc *fd, PRInt32 level, PRInt32 optname, char* optval, PRInt32* optlen); +#define _PR_MD_GETSOCKOPT _MD_GETSOCKOPT + +extern PRStatus _PR_MD_SETSOCKOPT( + PRFileDesc *fd, PRInt32 level, PRInt32 optname, + const char* optval, PRInt32 optlen); +#define _PR_MD_SETSOCKOPT _MD_SETSOCKOPT + +extern PRStatus PR_CALLBACK _PR_SocketGetSocketOption( + PRFileDesc *fd, PRSocketOptionData *data); + +extern PRStatus PR_CALLBACK _PR_SocketSetSocketOption( + PRFileDesc *fd, const PRSocketOptionData *data); + +extern PRInt32 _PR_MD_RECVFROM( + PRFileDesc *fd, void *buf, PRInt32 amount, PRIntn flags, + PRNetAddr *addr, PRUint32 *addrlen, PRIntervalTime timeout); +#define _PR_MD_RECVFROM _MD_RECVFROM + +extern PRInt32 _PR_MD_SENDTO( + PRFileDesc *fd, const void *buf, PRInt32 amount, PRIntn flags, + const PRNetAddr *addr, PRUint32 addrlen, PRIntervalTime timeout); +#define _PR_MD_SENDTO _MD_SENDTO + +#if defined(_WIN64) && defined(WIN95) +extern PRInt32 _PR_MD_TCPSENDTO( + PRFileDesc *fd, const void *buf, PRInt32 amount, PRIntn flags, + const PRNetAddr *addr, PRUint32 addrlen, PRIntervalTime timeout); +#define _PR_MD_TCPSENDTO _MD_TCPSENDTO +#endif + +extern PRInt32 _PR_MD_SOCKETPAIR(int af, int type, int flags, PROsfd *osfd); +#define _PR_MD_SOCKETPAIR _MD_SOCKETPAIR + +extern PROsfd _PR_MD_SOCKET(int af, int type, int flags); +#define _PR_MD_SOCKET _MD_SOCKET + +extern PRInt32 _PR_MD_SOCKETAVAILABLE(PRFileDesc *fd); +#define _PR_MD_SOCKETAVAILABLE _MD_SOCKETAVAILABLE + +extern PRInt32 _PR_MD_PIPEAVAILABLE(PRFileDesc *fd); +#define _PR_MD_PIPEAVAILABLE _MD_PIPEAVAILABLE + +extern PRInt32 _PR_MD_PR_POLL(PRPollDesc *pds, PRIntn npds, + PRIntervalTime timeout); +#define _PR_MD_PR_POLL _MD_PR_POLL + +/* + * Initialize fd->secret->inheritable for a newly created fd. + * If 'imported' is false, the osfd (i.e., fd->secret->md.osfd) + * was created by NSPR and hence has the OS-dependent default + * inheritable attribute. If 'imported' is true, the osfd was + * not created by NSPR and hence a system call is required to + * query its inheritable attribute. Since we may never need to + * know the inheritable attribute of a fd, a platform may choose + * to initialize fd->secret->inheritable of an imported fd to + * _PR_TRI_UNKNOWN and only pay the cost of the system call + * (in _PR_MD_QUERY_FD_INHERITABLE) when necessary. + */ +extern void _PR_MD_INIT_FD_INHERITABLE(PRFileDesc *fd, PRBool imported); +#define _PR_MD_INIT_FD_INHERITABLE _MD_INIT_FD_INHERITABLE + +extern PRStatus _PR_MD_SET_FD_INHERITABLE(PRFileDesc *fd, PRBool inheritable); +#define _PR_MD_SET_FD_INHERITABLE _MD_SET_FD_INHERITABLE + + +#define _PR_PROCESS_TIMEOUT_INTERRUPT_ERRORS(me) \ + if (_PR_PENDING_INTERRUPT(me)) { \ + me->flags &= ~_PR_INTERRUPT; \ + PR_SetError( PR_PENDING_INTERRUPT_ERROR, 0); \ + } else { \ + PR_SetError(PR_IO_TIMEOUT_ERROR, 0); \ + } + +extern void *_PR_MD_GET_SP(PRThread *thread); +#define _PR_MD_GET_SP _MD_GET_SP + +#endif /* defined(_PR_PTHREADS) */ + +/************************************************************************/ +/************************************************************************* +** The remainder of the definitions are shared by pthreads and the classic +** NSPR code. These too may be conditionalized. +*************************************************************************/ +/************************************************************************/ + +extern PROffset32 _PR_MD_LSEEK(PRFileDesc *fd, PROffset32 offset, PRSeekWhence whence); +#define _PR_MD_LSEEK _MD_LSEEK + +extern PROffset64 _PR_MD_LSEEK64(PRFileDesc *fd, PROffset64 offset, PRSeekWhence whence); +#define _PR_MD_LSEEK64 _MD_LSEEK64 + +extern PRInt32 _PR_MD_GETFILEINFO(const char *fn, PRFileInfo *info); +#define _PR_MD_GETFILEINFO _MD_GETFILEINFO + +extern PRInt32 _PR_MD_GETFILEINFO64(const char *fn, PRFileInfo64 *info); +#define _PR_MD_GETFILEINFO64 _MD_GETFILEINFO64 + +extern PRInt32 _PR_MD_GETOPENFILEINFO(const PRFileDesc *fd, PRFileInfo *info); +#define _PR_MD_GETOPENFILEINFO _MD_GETOPENFILEINFO + +extern PRInt32 _PR_MD_GETOPENFILEINFO64(const PRFileDesc *fd, PRFileInfo64 *info); +#define _PR_MD_GETOPENFILEINFO64 _MD_GETOPENFILEINFO64 + + +/*****************************************************************************/ +/************************** File descriptor caching **************************/ +/*****************************************************************************/ +extern void _PR_InitFdCache(void); +extern void _PR_CleanupFdCache(void); +extern PRFileDesc *_PR_Getfd(void); +extern void _PR_Putfd(PRFileDesc *fd); + +/* + * These flags are used by NSPR temporarily in the poll + * descriptor's out_flags field to record the mapping of + * NSPR's poll flags to the system poll flags. + * + * If _PR_POLL_READ_SYS_WRITE bit is set, it means the + * PR_POLL_READ flag specified by the topmost layer is + * mapped to the WRITE flag at the system layer. Similarly + * for the other three _PR_POLL_XXX_SYS_YYY flags. It is + * assumed that the PR_POLL_EXCEPT flag doesn't get mapped + * to other flags. + */ +#define _PR_POLL_READ_SYS_READ 0x1 +#define _PR_POLL_READ_SYS_WRITE 0x2 +#define _PR_POLL_WRITE_SYS_READ 0x4 +#define _PR_POLL_WRITE_SYS_WRITE 0x8 + +/* +** These methods are coerced into file descriptor methods table +** when the intended service is inappropriate for the particular +** type of file descriptor. +*/ +extern PRIntn _PR_InvalidInt(void); +extern PRInt16 _PR_InvalidInt16(void); +extern PRInt64 _PR_InvalidInt64(void); +extern PRStatus _PR_InvalidStatus(void); +extern PRFileDesc *_PR_InvalidDesc(void); + +extern PRIOMethods _pr_faulty_methods; + +/* +** The PR_NETADDR_SIZE macro can only be called on a PRNetAddr union +** whose 'family' field is set. It returns the size of the union +** member corresponding to the specified address family. +*/ + +extern PRUintn _PR_NetAddrSize(const PRNetAddr* addr); + +#if defined(_PR_INET6) + +#define PR_NETADDR_SIZE(_addr) _PR_NetAddrSize(_addr) + +#elif defined(_PR_HAVE_MD_SOCKADDR_IN6) + +/* +** Under the following conditions: +** 1. _PR_INET6 is not defined; +** 2. _PR_INET6_PROBE is defined; +** 3. struct sockaddr_in6 has nonstandard fields at the end +** (e.g., on Solaris 8), +** (_addr)->ipv6 is smaller than struct sockaddr_in6, and +** hence we can't pass sizeof((_addr)->ipv6) to socket +** functions such as connect because they would fail with +** EINVAL. +** +** To pass the correct socket address length to socket +** functions, define the macro _PR_HAVE_MD_SOCKADDR_IN6 and +** define struct _md_sockaddr_in6 to be isomorphic to +** struct sockaddr_in6. +*/ + +#if defined(XP_UNIX) || defined(XP_OS2) +#define PR_NETADDR_SIZE(_addr) \ + ((_addr)->raw.family == PR_AF_INET \ + ? sizeof((_addr)->inet) \ + : ((_addr)->raw.family == PR_AF_INET6 \ + ? sizeof(struct _md_sockaddr_in6) \ + : sizeof((_addr)->local))) +#else +#define PR_NETADDR_SIZE(_addr) \ + ((_addr)->raw.family == PR_AF_INET \ + ? sizeof((_addr)->inet) \ + : sizeof(struct _md_sockaddr_in6)) +#endif /* defined(XP_UNIX) */ + +#else + +#if defined(XP_UNIX) || defined(XP_OS2) +#define PR_NETADDR_SIZE(_addr) \ + ((_addr)->raw.family == PR_AF_INET \ + ? sizeof((_addr)->inet) \ + : ((_addr)->raw.family == PR_AF_INET6 \ + ? sizeof((_addr)->ipv6) \ + : sizeof((_addr)->local))) +#else +#define PR_NETADDR_SIZE(_addr) \ + ((_addr)->raw.family == PR_AF_INET \ + ? sizeof((_addr)->inet) \ + : sizeof((_addr)->ipv6)) +#endif /* defined(XP_UNIX) */ + +#endif /* defined(_PR_INET6) */ + +extern PRStatus _PR_MapOptionName( + PRSockOption optname, PRInt32 *level, PRInt32 *name); +extern void _PR_InitThreads( + PRThreadType type, PRThreadPriority priority, PRUintn maxPTDs); + +struct PRLock { +#if defined(_PR_PTHREADS) + pthread_mutex_t mutex; /* the underlying lock */ + _PT_Notified notified; /* array of conditions notified */ + PRBool locked; /* whether the mutex is locked */ + pthread_t owner; /* if locked, current lock owner */ +#elif defined(_PR_BTHREADS) + sem_id semaphoreID; /* the underlying lock */ + int32 benaphoreCount; /* number of people in lock */ + thread_id owner; /* current lock owner */ +#else /* not pthreads or Be threads */ + PRCList links; /* linkage for PRThread.lockList */ + struct PRThread *owner; /* current lock owner */ + PRCList waitQ; /* list of threads waiting for lock */ + PRThreadPriority priority; /* priority of lock */ + PRThreadPriority boostPriority; /* boosted priority of lock owner */ + _MDLock ilock; /* Internal Lock to protect user-level fields */ +#endif +}; + +struct PRCondVar { + PRLock *lock; /* associated lock that protects the condition */ +#if defined(_PR_PTHREADS) + pthread_cond_t cv; /* underlying pthreads condition */ + PRInt32 notify_pending; /* CV has destroy pending notification */ +#elif defined(_PR_BTHREADS) + sem_id sem; /* the underlying lock */ + sem_id handshakeSem; /* the lock for 'notify'-threads waiting for confirmation */ + sem_id signalSem; /* the lock for threads waiting for someone to notify */ + volatile int32 nw; /* the number waiting */ + volatile int32 ns; /* the number signalling */ + long signalBenCount; /* the number waiting on the underlying sem */ +#else /* not pthreads or Be threads */ + PRCList condQ; /* Condition variable wait Q */ + _MDLock ilock; /* Internal Lock to protect condQ */ + _MDCVar md; +#endif +}; + +/************************************************************************/ + +struct PRMonitor { + const char* name; /* monitor name for debugging */ +#if defined(_PR_PTHREADS) + pthread_mutex_t lock; /* lock is only held when accessing fields + * of the PRMonitor, instead of being held + * while the monitor is entered. The only + * exception is notifyTimes, which is + * protected by the monitor. */ + pthread_t owner; /* the owner of the monitor or invalid */ + pthread_cond_t entryCV; /* for threads waiting to enter the monitor */ + + pthread_cond_t waitCV; /* for threads waiting on the monitor */ + PRInt32 refCount; /* reference count, an atomic variable. + * PR_NewMonitor adds a reference to the + * newly created PRMonitor, and + * PR_DestroyMonitor releases that reference. + * PR_ExitMonitor adds a reference before + * unlocking the internal lock if it needs to + * signal entryCV, and releases the reference + * after signaling entryCV. */ +#else /* defined(_PR_PTHREADS) */ + PRLock lock; /* lock is only held when accessing fields + * of the PRMonitor, instead of being held + * while the monitor is entered. The only + * exception is notifyTimes, which is + * protected by the monitor. */ + PRThread *owner; /* the owner of the monitor or invalid */ + PRCondVar entryCV; /* for threads waiting to enter the monitor */ + + PRCondVar waitCV; /* for threads waiting on the monitor */ +#endif /* defined(_PR_PTHREADS) */ + PRUint32 entryCount; /* # of times re-entered */ + PRIntn notifyTimes; /* number of pending notifies for waitCV. + * The special value -1 means a broadcast + * (PR_NotifyAll). */ +}; + +/************************************************************************/ + +struct PRSemaphore { +#if defined(_PR_BTHREADS) + sem_id sem; + int32 benaphoreCount; +#else + PRCondVar *cvar; /* associated lock and condition variable queue */ + PRUintn count; /* the value of the counting semaphore */ + PRUint32 waiters; /* threads waiting on the semaphore */ +#if defined(_PR_PTHREADS) +#else /* defined(_PR_PTHREADS) */ + _MDSemaphore md; +#endif /* defined(_PR_PTHREADS) */ +#endif /* defined(_PR_BTHREADS) */ +}; + +/*************************************************************************/ + +struct PRSem { +#ifdef _PR_HAVE_POSIX_SEMAPHORES + sem_t *sem; +#elif defined(_PR_HAVE_SYSV_SEMAPHORES) + int semid; +#elif defined(WIN32) + HANDLE sem; +#else + PRInt8 notused; +#endif +}; + +/*************************************************************************/ + +struct PRStackStr { + /* head MUST be at offset 0; assembly language code relies on this */ +#if defined(AIX) + volatile PRStackElem prstk_head; +#else + PRStackElem prstk_head; +#endif + + PRLock *prstk_lock; + char *prstk_name; +}; + +/************************************************************************/ + +/* XXX this needs to be exported (sigh) */ +struct PRThreadStack { + PRCList links; + PRUintn flags; + + char *allocBase; /* base of stack's allocated memory */ + PRUint32 allocSize; /* size of stack's allocated memory */ + char *stackBottom; /* bottom of stack from C's point of view */ + char *stackTop; /* top of stack from C's point of view */ + PRUint32 stackSize; /* size of usable portion of the stack */ + + PRSegment *seg; + PRThread* thr; /* back pointer to thread owning this stack */ + +#if defined(_PR_PTHREADS) +#else /* defined(_PR_PTHREADS) */ + _MDThreadStack md; +#endif /* defined(_PR_PTHREADS) */ +}; + +extern void _PR_DestroyThreadPrivate(PRThread*); + +typedef void (PR_CALLBACK *_PRStartFn)(void *); + +struct PRThread { + PRUint32 state; /* thread's creation state */ + PRThreadPriority priority; /* apparent priority, loosly defined */ + + void *arg; /* argument to the client's entry point */ + _PRStartFn startFunc; /* the root of the client's thread */ + + PRThreadStack *stack; /* info about thread's stack (for GC) */ + void *environment; /* pointer to execution environment */ + + PRThreadDumpProc dump; /* dump thread info out */ + void *dumpArg; /* argument for the dump function */ + + /* + ** Per thread private data + */ + PRUint32 tpdLength; /* thread's current vector length */ + void **privateData; /* private data vector or NULL */ + PRErrorCode errorCode; /* current NSPR error code | zero */ + PRInt32 osErrorCode; /* mapping of errorCode | zero */ + PRIntn errorStringLength; /* textLength from last call to PR_SetErrorText() */ + PRInt32 errorStringSize; /* malloc()'d size of buffer | zero */ + char *errorString; /* current error string | NULL */ + char *name; /* thread's name */ + +#if defined(_PR_PTHREADS) + pthread_t id; /* pthread identifier for the thread */ + PRBool idSet; /* whether 'id' has been set. Protected by + * pt_book.ml. */ +#ifdef _PR_NICE_PRIORITY_SCHEDULING + pid_t tid; /* Linux-specific kernel thread ID */ +#endif + PRBool okToDelete; /* ok to delete the PRThread struct? */ + PRCondVar *waiting; /* where the thread is waiting | NULL */ + void *sp; /* recorded sp for garbage collection */ + PRThread *next, *prev; /* simple linked list of all threads */ + PRUint32 suspend; /* used to store suspend and resume flags */ +#ifdef PT_NO_SIGTIMEDWAIT + pthread_mutex_t suspendResumeMutex; + pthread_cond_t suspendResumeCV; +#endif + PRUint32 interrupt_blocked; /* interrupt blocked */ + struct pollfd *syspoll_list; /* Unix polling list used by PR_Poll */ + PRUint32 syspoll_count; /* number of elements in syspoll_list */ +#if defined(_PR_POLL_WITH_SELECT) + int *selectfd_list; /* Unix fd's that PR_Poll selects on */ + PRUint32 selectfd_count; /* number of elements in selectfd_list */ +#endif +#elif defined(_PR_BTHREADS) + PRUint32 flags; + _MDThread md; + PRBool io_pending; + PRInt32 io_fd; + PRBool io_suspended; +#else /* not pthreads or Be threads */ + _MDLock threadLock; /* Lock to protect thread state variables. + * Protects the following fields: + * state + * priority + * links + * wait + * cpu + */ + PRUint32 queueCount; + PRUint32 waitCount; + + PRCList active; /* on list of all active threads */ + PRCList links; + PRCList waitQLinks; /* when thread is PR_Wait'ing */ + PRCList lockList; /* list of locks currently holding */ + PRIntervalTime sleep; /* sleep time when thread is sleeping */ + struct _wait { + struct PRLock *lock; + struct PRCondVar *cvar; + } wait; + + PRUint32 id; + PRUint32 flags; + PRUint32 no_sched; /* Don't schedule the thread to run. + * This flag has relevance only when + * multiple NSPR CPUs are created. + * When a thread is de-scheduled, there + * is a narrow window of time in which + * the thread is put on the run queue + * but the scheduler is actually using + * the stack of this thread. It is safe + * to run this thread on a different CPU + * only when its stack is not in use on + * any other CPU. The no_sched flag is + * set during this interval to prevent + * the thread from being scheduled on a + * different CPU. + */ + + /* thread termination condition variable for join */ + PRCondVar *term; + + _PRCPU *cpu; /* cpu to which this thread is bound */ + PRUint32 threadAllocatedOnStack;/* boolean */ + + /* When an async IO is in progress and a second async IO cannot be + * initiated, the io_pending flag is set to true. Some platforms will + * not use the io_pending flag. If the io_pending flag is true, then + * io_fd is the OS-file descriptor on which IO is pending. + */ + PRBool io_pending; + PRInt32 io_fd; + + /* If a timeout occurs or if an outstanding IO is interrupted and the + * OS doesn't support a real cancellation (NT or MAC), then the + * io_suspended flag will be set to true. The thread will be resumed + * but may run into trouble issuing additional IOs until the io_pending + * flag can be cleared + */ + PRBool io_suspended; + + _MDThread md; +#endif +}; + +struct PRProcessAttr { + PRFileDesc *stdinFd; + PRFileDesc *stdoutFd; + PRFileDesc *stderrFd; + char *currentDirectory; + char *fdInheritBuffer; + PRSize fdInheritBufferSize; + PRSize fdInheritBufferUsed; +}; + +struct PRProcess { + _MDProcess md; +}; + +struct PRFileMap { + PRFileDesc *fd; + PRFileMapProtect prot; + _MDFileMap md; +}; + +/************************************************************************/ + +/* +** File descriptors of the NSPR layer can be in one of the +** following states (stored in the 'state' field of struct +** PRFilePrivate): +** - _PR_FILEDESC_OPEN: The OS fd is open. +** - _PR_FILEDESC_CLOSED: The OS fd is closed. The PRFileDesc +** is still open but is unusable. The only operation allowed +** on the PRFileDesc is PR_Close(). +** - _PR_FILEDESC_FREED: The OS fd is closed and the PRFileDesc +** structure is freed. +*/ + +#define _PR_FILEDESC_OPEN 0xaaaaaaaa /* 1010101... */ +#define _PR_FILEDESC_CLOSED 0x55555555 /* 0101010... */ +#define _PR_FILEDESC_FREED 0x11111111 + +/* +** A boolean type with an additional "unknown" state +*/ + +typedef enum { + _PR_TRI_TRUE = 1, + _PR_TRI_FALSE = 0, + _PR_TRI_UNKNOWN = -1 +} _PRTriStateBool; + +struct PRFilePrivate { + PRInt32 state; + PRBool nonblocking; + _PRTriStateBool inheritable; + PRFileDesc *next; + PRIntn lockCount; /* 0: not locked + * -1: a native lockfile call is in progress + * > 0: # times the file is locked */ +#ifdef _PR_HAVE_PEEK_BUFFER + char *peekBuffer; + PRInt32 peekBufSize; + PRInt32 peekBytes; +#endif +#if !defined(_PR_HAVE_O_APPEND) + PRBool appendMode; /* Some platforms don't have O_APPEND or its + * equivalent, so they have to seek to end of + * file on write if the file was opened in + * append mode. See Bugzilla 4090, 276330. */ +#endif + _MDFileDesc md; +#ifdef _PR_NEED_SECRET_AF + PRUint16 af; /* If the platform's implementation of accept() + * requires knowing the address family of the + * socket, we save the address family here. */ +#endif + +#if defined(_WIN64) + /* This is necessary for TCP Fast Open. TCP Fast Open in windows must + * use ConnectEx function which uses OVERLAPPED. TCPSendTo will call + * ConnectEx to send fast open data. If ConnectEx returns + * ERROR_IO_PENDING we need to save OVERLAPPED structure and we will + * use it in ConnectContinue to get the final result of ConnectEx. + */ + PRBool alreadyConnected; + PRBool overlappedActive; + OVERLAPPED ol; +#endif +}; + +#ifdef _WIN64 +#define PR_PRIdOSFD "lld" /* for printing PROsfd */ +#define PR_PRIxOSFD "llx" +#define PR_SCNdOSFD "lld" /* for scanning PROsfd */ +#define PR_SCNxOSFD "llx" +#else +#define PR_PRIdOSFD "ld" /* for printing PROsfd */ +#define PR_PRIxOSFD "lx" +#define PR_SCNdOSFD "ld" /* for scanning PROsfd */ +#define PR_SCNxOSFD "lx" +#endif + +struct PRDir { + PRDirEntry d; + _MDDir md; +}; + +#ifdef MOZ_UNICODE +struct PRDirUTF16 { + PRDirEntry d; + _MDDirUTF16 md; +}; +#endif /* MOZ_UNICODE */ + +extern void _PR_InitLocks(void); +extern void _PR_InitSegs(void); +extern void _PR_InitStacks(void); +extern void _PR_InitTPD(void); +extern void _PR_InitMem(void); +extern void _PR_InitEnv(void); +extern void _PR_InitCMon(void); +extern void _PR_InitIO(void); +extern void _PR_InitLog(void); +extern void _PR_InitNet(void); +extern void _PR_InitClock(void); +extern void _PR_InitLinker(void); +extern void _PR_InitAtomic(void); +extern void _PR_InitCPUs(void); +extern void _PR_InitDtoa(void); +extern void _PR_InitTime(void); +extern void _PR_InitMW(void); +extern void _PR_InitRWLocks(void); +extern void _PR_CleanupThread(PRThread *thread); +extern void _PR_CleanupCallOnce(void); +extern void _PR_CleanupMW(void); +extern void _PR_CleanupTime(void); +extern void _PR_CleanupDtoa(void); +extern void _PR_ShutdownLinker(void); +extern void _PR_CleanupEnv(void); +extern void _PR_CleanupIO(void); +extern void _PR_CleanupCMon(void); +extern void _PR_CleanupNet(void); +extern void _PR_CleanupLayerCache(void); +extern void _PR_CleanupStacks(void); +#ifdef WINNT +extern void _PR_CleanupCPUs(void); +#endif +extern void _PR_CleanupThreads(void); +extern void _PR_CleanupTPD(void); +extern void _PR_Cleanup(void); +extern void _PR_LogCleanup(void); +extern void _PR_InitLayerCache(void); + +extern PRBool _pr_initialized; +extern void _PR_ImplicitInitialization(void); +extern PRBool _PR_Obsolete(const char *obsolete, const char *preferred); + +/************************************************************************/ + +struct PRSegment { + void *vaddr; + PRUint32 size; + PRUintn flags; +#if defined(_PR_PTHREADS) +#else /* defined(_PR_PTHREADS) */ + _MDSegment md; +#endif /* defined(_PR_PTHREADS) */ +}; + +/* PRSegment.flags */ +#define _PR_SEG_VM 0x1 + +/************************************************************************/ + +extern PRInt32 _pr_pageSize; +extern PRInt32 _pr_pageShift; + +extern PRLogModuleInfo *_pr_clock_lm; +extern PRLogModuleInfo *_pr_cmon_lm; +extern PRLogModuleInfo *_pr_io_lm; +extern PRLogModuleInfo *_pr_cvar_lm; +extern PRLogModuleInfo *_pr_mon_lm; +extern PRLogModuleInfo *_pr_linker_lm; +extern PRLogModuleInfo *_pr_sched_lm; +extern PRLogModuleInfo *_pr_thread_lm; +extern PRLogModuleInfo *_pr_gc_lm; + +extern PRFileDesc *_pr_stdin; +extern PRFileDesc *_pr_stdout; +extern PRFileDesc *_pr_stderr; + +/* Zone allocator */ +/* +** The zone allocator code has hardcoded pthread types and +** functions, so it can only be used in the pthreads version. +** This can be fixed by replacing the hardcoded pthread types +** and functions with macros that expand to the native thread +** types and functions on each platform. +*/ +#if defined(_PR_PTHREADS) +#define _PR_ZONE_ALLOCATOR +#endif + +#ifdef _PR_ZONE_ALLOCATOR +extern void _PR_InitZones(void); +extern void _PR_DestroyZones(void); +#endif + +/* Overriding malloc, free, etc. */ +#if !defined(_PR_NO_PREEMPT) && defined(XP_UNIX) \ + && !defined(_PR_PTHREADS) && !defined(_PR_GLOBAL_THREADS_ONLY) \ + && !defined(PURIFY) \ + && !defined(DARWIN) \ + && !defined(QNX) \ + && !(defined (UNIXWARE) && defined (USE_SVR4_THREADS)) +#define _PR_OVERRIDE_MALLOC +#endif + +/************************************************************************* +* External machine-dependent code provided by each OS. * * +*************************************************************************/ + +/* Initialization related */ +extern void _PR_MD_EARLY_INIT(void); +#define _PR_MD_EARLY_INIT _MD_EARLY_INIT + +extern void _PR_MD_INTERVAL_INIT(void); +#define _PR_MD_INTERVAL_INIT _MD_INTERVAL_INIT + +NSPR_API(void) _PR_MD_FINAL_INIT(void); +#define _PR_MD_FINAL_INIT _MD_FINAL_INIT + +extern void _PR_MD_EARLY_CLEANUP(void); +#define _PR_MD_EARLY_CLEANUP _MD_EARLY_CLEANUP + +/* Process control */ + +extern PRProcess * _PR_MD_CREATE_PROCESS( + const char *path, + char *const *argv, + char *const *envp, + const PRProcessAttr *attr); +#define _PR_MD_CREATE_PROCESS _MD_CREATE_PROCESS + +extern PRStatus _PR_MD_DETACH_PROCESS(PRProcess *process); +#define _PR_MD_DETACH_PROCESS _MD_DETACH_PROCESS + +extern PRStatus _PR_MD_WAIT_PROCESS(PRProcess *process, PRInt32 *exitCode); +#define _PR_MD_WAIT_PROCESS _MD_WAIT_PROCESS + +extern PRStatus _PR_MD_KILL_PROCESS(PRProcess *process); +#define _PR_MD_KILL_PROCESS _MD_KILL_PROCESS + +/* Current Time */ +NSPR_API(PRTime) _PR_MD_NOW(void); +#define _PR_MD_NOW _MD_NOW + +/* Environment related */ +extern char* _PR_MD_GET_ENV(const char *name); +#define _PR_MD_GET_ENV _MD_GET_ENV + +extern PRIntn _PR_MD_PUT_ENV(const char *name); +#define _PR_MD_PUT_ENV _MD_PUT_ENV + +/* Atomic operations */ + +extern void _PR_MD_INIT_ATOMIC(void); +#define _PR_MD_INIT_ATOMIC _MD_INIT_ATOMIC + +extern PRInt32 _PR_MD_ATOMIC_INCREMENT(PRInt32 *); +#define _PR_MD_ATOMIC_INCREMENT _MD_ATOMIC_INCREMENT + +extern PRInt32 _PR_MD_ATOMIC_ADD(PRInt32 *, PRInt32); +#define _PR_MD_ATOMIC_ADD _MD_ATOMIC_ADD + +extern PRInt32 _PR_MD_ATOMIC_DECREMENT(PRInt32 *); +#define _PR_MD_ATOMIC_DECREMENT _MD_ATOMIC_DECREMENT + +extern PRInt32 _PR_MD_ATOMIC_SET(PRInt32 *, PRInt32); +#define _PR_MD_ATOMIC_SET _MD_ATOMIC_SET + +/* Garbage collection */ + +/* +** Save the registers that the GC would find interesting into the thread +** "t". isCurrent will be non-zero if the thread state that is being +** saved is the currently executing thread. Return the address of the +** first register to be scanned as well as the number of registers to +** scan in "np". +** +** If "isCurrent" is non-zero then it is allowed for the thread context +** area to be used as scratch storage to hold just the registers +** necessary for scanning. +*/ +extern PRWord *_MD_HomeGCRegisters(PRThread *t, int isCurrent, int *np); + +/* Time intervals */ + +extern PRIntervalTime _PR_MD_GET_INTERVAL(void); +#define _PR_MD_GET_INTERVAL _MD_GET_INTERVAL + +extern PRIntervalTime _PR_MD_INTERVAL_PER_SEC(void); +#define _PR_MD_INTERVAL_PER_SEC _MD_INTERVAL_PER_SEC + +/* Affinity masks */ + +extern PRInt32 _PR_MD_SETTHREADAFFINITYMASK(PRThread *thread, PRUint32 mask ); +#define _PR_MD_SETTHREADAFFINITYMASK _MD_SETTHREADAFFINITYMASK + +extern PRInt32 _PR_MD_GETTHREADAFFINITYMASK(PRThread *thread, PRUint32 *mask); +#define _PR_MD_GETTHREADAFFINITYMASK _MD_GETTHREADAFFINITYMASK + +/* File locking */ + +extern PRStatus _PR_MD_LOCKFILE(PROsfd osfd); +#define _PR_MD_LOCKFILE _MD_LOCKFILE + +extern PRStatus _PR_MD_TLOCKFILE(PROsfd osfd); +#define _PR_MD_TLOCKFILE _MD_TLOCKFILE + +extern PRStatus _PR_MD_UNLOCKFILE(PROsfd osfd); +#define _PR_MD_UNLOCKFILE _MD_UNLOCKFILE + +/* Memory-mapped files */ + +extern PRStatus _PR_MD_CREATE_FILE_MAP(PRFileMap *fmap, PRInt64 size); +#define _PR_MD_CREATE_FILE_MAP _MD_CREATE_FILE_MAP + +extern PRInt32 _PR_MD_GET_MEM_MAP_ALIGNMENT(void); +#define _PR_MD_GET_MEM_MAP_ALIGNMENT _MD_GET_MEM_MAP_ALIGNMENT + +extern void * _PR_MD_MEM_MAP( + PRFileMap *fmap, + PROffset64 offset, + PRUint32 len); +#define _PR_MD_MEM_MAP _MD_MEM_MAP + +extern PRStatus _PR_MD_MEM_UNMAP(void *addr, PRUint32 size); +#define _PR_MD_MEM_UNMAP _MD_MEM_UNMAP + +extern PRStatus _PR_MD_CLOSE_FILE_MAP(PRFileMap *fmap); +#define _PR_MD_CLOSE_FILE_MAP _MD_CLOSE_FILE_MAP + +extern PRStatus _PR_MD_SYNC_MEM_MAP( + PRFileDesc *fd, + void *addr, + PRUint32 len); +#define _PR_MD_SYNC_MEM_MAP _MD_SYNC_MEM_MAP + +/* Named Shared Memory */ + +/* +** Declare PRSharedMemory. +*/ +struct PRSharedMemory +{ + char *ipcname; /* after conversion to native */ + PRSize size; /* from open */ + PRIntn mode; /* from open */ + PRIntn flags; /* from open */ +#if defined(PR_HAVE_POSIX_NAMED_SHARED_MEMORY) + int id; +#elif defined(PR_HAVE_SYSV_NAMED_SHARED_MEMORY) + int id; +#elif defined(PR_HAVE_WIN32_NAMED_SHARED_MEMORY) + HANDLE handle; +#else + PRUint32 nothing; /* placeholder, nothing behind here */ +#endif + PRUint32 ident; /* guard word at end of struct */ +#define _PR_SHM_IDENT 0xdeadbad +}; + +extern PRSharedMemory * _MD_OpenSharedMemory( + const char *name, + PRSize size, + PRIntn flags, + PRIntn mode +); +#define _PR_MD_OPEN_SHARED_MEMORY _MD_OpenSharedMemory + +extern void * _MD_AttachSharedMemory( PRSharedMemory *shm, PRIntn flags ); +#define _PR_MD_ATTACH_SHARED_MEMORY _MD_AttachSharedMemory + +extern PRStatus _MD_DetachSharedMemory( PRSharedMemory *shm, void *addr ); +#define _PR_MD_DETACH_SHARED_MEMORY _MD_DetachSharedMemory + +extern PRStatus _MD_CloseSharedMemory( PRSharedMemory *shm ); +#define _PR_MD_CLOSE_SHARED_MEMORY _MD_CloseSharedMemory + +extern PRStatus _MD_DeleteSharedMemory( const char *name ); +#define _PR_MD_DELETE_SHARED_MEMORY _MD_DeleteSharedMemory + +extern PRFileMap* _md_OpenAnonFileMap( + const char *dirName, + PRSize size, + PRFileMapProtect prot +); +#define _PR_MD_OPEN_ANON_FILE_MAP _md_OpenAnonFileMap + +extern PRStatus _md_ExportFileMapAsString( + PRFileMap *fm, + PRSize bufSize, + char *buf +); +#define _PR_MD_EXPORT_FILE_MAP_AS_STRING _md_ExportFileMapAsString + +extern PRFileMap * _md_ImportFileMapFromString( + const char *fmstring +); +#define _PR_MD_IMPORT_FILE_MAP_FROM_STRING _md_ImportFileMapFromString + + + +/* Interprocess communications (IPC) */ + +/* + * The maximum length of an NSPR IPC name, including the + * terminating null byte. + */ +#define PR_IPC_NAME_SIZE 1024 + +/* + * Types of NSPR IPC objects + */ +typedef enum { + _PRIPCSem, /* semaphores */ + _PRIPCShm /* shared memory segments */ +} _PRIPCType; + +/* + * Make a native IPC name from an NSPR IPC name. + */ +extern PRStatus _PR_MakeNativeIPCName( + const char *name, /* NSPR IPC name */ + char *result, /* result buffer */ + PRIntn size, /* size of result buffer */ + _PRIPCType type /* type of IPC object */ +); + +/* Socket call error code */ + +NSPR_API(PRInt32) _PR_MD_GET_SOCKET_ERROR(void); +#define _PR_MD_GET_SOCKET_ERROR _MD_GET_SOCKET_ERROR + +/* Get name of current host */ +extern PRStatus _PR_MD_GETHOSTNAME(char *name, PRUint32 namelen); +#define _PR_MD_GETHOSTNAME _MD_GETHOSTNAME + +extern PRStatus _PR_MD_GETSYSINFO(PRSysInfo cmd, char *name, PRUint32 namelen); +#define _PR_MD_GETSYSINFO _MD_GETSYSINFO + +/* File descriptor inheritance */ + +/* + * If fd->secret->inheritable is _PR_TRI_UNKNOWN and we need to + * know the inheritable attribute of the fd, call this function + * to find that out. This typically requires a system call. + */ +extern void _PR_MD_QUERY_FD_INHERITABLE(PRFileDesc *fd); +#define _PR_MD_QUERY_FD_INHERITABLE _MD_QUERY_FD_INHERITABLE + +/* --- PR_GetRandomNoise() related things --- */ + +extern PRSize _PR_MD_GetRandomNoise( void *buf, PRSize size ); +#define _PR_MD_GET_RANDOM_NOISE(buf,size) _PR_MD_GetRandomNoise((buf),(size)) +extern PRSize _pr_CopyLowBits( void *dest, PRSize dstlen, void *src, PRSize srclen ); + +/* end PR_GetRandomNoise() related */ + +#if defined(_WIN64) && defined(WIN95) +typedef struct _PRFileDescList { + PRFileDesc *fd; + struct _PRFileDescList *next; +} PRFileDescList; + +extern PRLock *_fd_waiting_for_overlapped_done_lock; +extern PRFileDescList *_fd_waiting_for_overlapped_done; +extern void CheckOverlappedPendingSocketsAreDone(); +#endif + + +PR_END_EXTERN_C + +#endif /* primpl_h___ */ |