994 lines
20 KiB
C++
994 lines
20 KiB
C++
/* thread.cc: Locking and threading module functions
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Copyright 1998, 1999, 2000, 2001 Red Hat, Inc.
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Written by Marco Fuykschot <marco@ddi.nl>
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This file is part of Cygwin.
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This software is a copyrighted work licensed under the terms of the
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Cygwin license. Please consult the file "CYGWIN_LICENSE" for
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details. */
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#ifdef HAVE_CONFIG_H
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# include "config.h"
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#endif
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#ifdef _MT_SAFE
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#include "winsup.h"
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#include <limits.h>
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#include <errno.h>
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#include <assert.h>
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#include <stdlib.h>
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#include <syslog.h>
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#include "sync.h"
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#include "sigproc.h"
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#include "pinfo.h"
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#include "perprocess.h"
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#include "security.h"
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extern int threadsafe;
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#define MT_INTERFACE user_data->threadinterface
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#define NOT_IMP(n) system_printf ("not implemented %s\n", n); return 0;
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#define CHECKHANDLE(rval, release) \
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if (!item->HandleOke ()) \
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{ \
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if (release) \
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item->used=false; \
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return rval; \
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}
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#define GETTHREAD(n) \
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if (!thread) system_printf ("thread is NULL");\
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SetResourceLock (LOCK_THREAD_LIST, READ_LOCK, n);\
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ThreadItem *item=user_data->threadinterface->GetThread (thread); \
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ReleaseResourceLock (LOCK_THREAD_LIST, READ_LOCK, n); \
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if (!item) return EINVAL; \
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CHECKHANDLE (EINVAL, 0);
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#define GETMUTEX(n) \
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SetResourceLock (LOCK_MUTEX_LIST, READ_LOCK, n); \
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MutexItem* item=user_data->threadinterface->GetMutex (mutex); \
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ReleaseResourceLock (LOCK_MUTEX_LIST, READ_LOCK, n); \
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if (!item) return EINVAL; \
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CHECKHANDLE (EINVAL, 0);
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#define GETSEMA(n) \
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SetResourceLock (LOCK_SEM_LIST, READ_LOCK, n); \
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SemaphoreItem* item=user_data->threadinterface->GetSemaphore (sem); \
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ReleaseResourceLock (LOCK_SEM_LIST, READ_LOCK, n); \
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if (!item) return EINVAL; \
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CHECKHANDLE (EINVAL, 0);
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#define CHECKITEM(rn, rm, fn) \
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if (!item) { \
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ReleaseResourceLock (rn, rm, fn); \
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return EINVAL; }; \
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struct _reent *
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_reent_clib ()
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{
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int tmp = GetLastError ();
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struct __reent_t *_r = (struct __reent_t *) TlsGetValue (MT_INTERFACE->reent_index);
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#ifdef _CYG_THREAD_FAILSAFE
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if (_r == 0)
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system_printf ("local thread storage not inited");
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#endif
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SetLastError (tmp);
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return _r->_clib;
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}
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struct _winsup_t *
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_reent_winsup ()
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{
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int tmp = GetLastError ();
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struct __reent_t *_r;
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_r = (struct __reent_t *) TlsGetValue (MT_INTERFACE->reent_index);
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#ifdef _CYG_THREAD_FAILSAFE
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if (_r == 0)
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system_printf ("local thread storage not inited");
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#endif
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SetLastError (tmp);
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return _r->_winsup;
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}
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inline LPCRITICAL_SECTION
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ResourceLocks::Lock (int _resid)
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{
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#ifdef _CYG_THREAD_FAILSAFE
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if (!inited)
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system_printf ("lock called before initialization");
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thread_printf ("Get Resource lock %d ==> %p for %p , real : %d , threadid %d ",
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_resid, &lock, user_data, myself->pid, GetCurrentThreadId ());
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#endif
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return &lock;
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}
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void
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SetResourceLock (int _res_id, int _mode, const char *_function)
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{
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#ifdef _CYG_THREAD_FAILSAFE
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thread_printf ("Set resource lock %d mode %d for %s start",
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_res_id, _mode, _function);
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#endif
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EnterCriticalSection (user_data->resourcelocks->Lock (_res_id));
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#ifdef _CYG_THREAD_FAILSAFE
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user_data->resourcelocks->owner = GetCurrentThreadId ();
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user_data->resourcelocks->count++;
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#endif
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}
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void
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ReleaseResourceLock (int _res_id, int _mode, const char *_function)
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{
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#ifdef _CYG_THREAD_FAILSAFE
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thread_printf ("Release resource lock %d mode %d for %s done", _res_id, _mode, _function);
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AssertResourceOwner (_res_id, _mode);
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user_data->resourcelocks->count--;
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if (user_data->resourcelocks->count == 0)
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user_data->resourcelocks->owner = 0;
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#endif
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LeaveCriticalSection (user_data->resourcelocks->Lock (_res_id));
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}
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#ifdef _CYG_THREAD_FAILSAFE
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void
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AssertResourceOwner (int _res_id, int _mode)
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{
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thread_printf ("Assert Resource lock %d ==> for %p , real : %d , threadid %d count %d owner %d",
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_res_id, user_data, myself->pid, GetCurrentThreadId (),
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user_data->resourcelocks->count, user_data->resourcelocks->owner);
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if (user_data && (user_data->resourcelocks->owner != GetCurrentThreadId ()))
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system_printf ("assertion failed, not the resource owner");
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}
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#endif
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void
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ResourceLocks::Init ()
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{
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InitializeCriticalSection (&lock);
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inited = true;
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#ifdef _CYG_THREAD_FAILSAFE
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owner = 0;
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count = 0;
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#endif
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thread_printf ("lock %p inited by %p , %d", &lock, user_data, myself->pid);
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}
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void
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ResourceLocks::Delete ()
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{
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if (inited)
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{
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thread_printf ("Close Resource Locks %p ", &lock);
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DeleteCriticalSection (&lock);
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inited = false;
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}
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}
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// Thread interface
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void
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MTinterface::ReleaseItem (MTitem * _item)
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{
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_item->used = false;
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}
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MTitem *
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MTinterface::Find (void *_value, int (*comp) (void *, void *), register int &_index, MTList * _list)
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{
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register MTitem *current = NULL;
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for (; _index < _list->index; _index++)
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{
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current = _list->items[_index];
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if (current->used && comp (current, _value))
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break;
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current = NULL;
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}
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return current;
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}
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int
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MTinterface::Find (MTitem & _item, MTList * _list)
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{
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register MTitem *current;
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register int _index = 0;
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for (; _index < _list->index; _index++)
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{
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current = _list->items[_index];
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if (current->used && current == &_item)
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break;
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}
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return (_index == _list->index ? -1 : _index);
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}
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int
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MTinterface::FindNextUnused (MTList * _list)
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{
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register int i = 0;
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for (; i < _list->index && _list->items[i] != NULL && _list->items[i]->used && _list->items[i]->joinable != 'Y'; i++)
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continue;
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return i;
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}
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MTitem *
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MTinterface::GetItem (int _index, MTList * _list)
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{
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return (_index < _list->index ? _list->items[_index] : NULL);
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}
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MTitem *
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MTinterface::SetItem (int _index, MTitem * _item, MTList * _list)
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{
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if (_index == _list->index && _list->index < MT_MAX_ITEMS)
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_list->index++;
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return (_index < _list->index ? _list->items[_index] = _item : NULL);
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}
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int
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CmpPthreadObj (void *_i, void *_value)
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{
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return ((MTitem *) _i)->Id () == *(int *) _value;
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}
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int
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CmpThreadId (void *_i, void *_id)
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{
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return ((ThreadItem *) _i)->thread_id == * (DWORD *) _id;
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}
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void
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MTinterface::Init (int forked)
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{
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#if 0
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for (int i = 0; i < MT_MAX_ITEMS; i++)
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{
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threadlist.items[i] = NULL;
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mutexlist.items[i] = NULL;
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semalist.items[i] = NULL;
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}
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threadlist.index = 0;
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mutexlist.index = 0;
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semalist.index = 0;
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#endif
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reent_index = TlsAlloc ();
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reents._clib = _impure_ptr;
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reents._winsup = &winsup_reent;
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winsup_reent._process_logmask = LOG_UPTO (LOG_DEBUG);
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#if 0
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winsup_reent._grp_pos = 0;
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winsup_reent._process_ident = 0;
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winsup_reent._process_logopt = 0;
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winsup_reent._process_facility = 0;
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#endif
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TlsSetValue (reent_index, &reents);
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// the static reent_data will be used in the main thread
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if (forked)
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return;
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// create entry for main thread
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ThreadItem *item = (ThreadItem *) GetItem (0, &threadlist);
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item = (ThreadItem *) SetItem (0, &mainthread, &threadlist);
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item->used = true;
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item->win32_obj_id = myself->hProcess;
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item->thread_id = GetCurrentThreadId ();
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#if 0
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item->function = NULL;
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item->sigs = NULL;
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item->sigmask = NULL;
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item->sigtodo = NULL;
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#endif
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struct _reent *r = _REENT;
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memset (r, 0, sizeof (struct _reent));
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r->_errno = 0;
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r->_stdin = &r->__sf[0];
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r->_stdout = &r->__sf[1];
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r->_stderr = &r->__sf[2];
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}
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ThreadItem *
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MTinterface::CreateThread (pthread_t * t, TFD (func), void *arg, pthread_attr_t a)
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{
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AssertResourceOwner (LOCK_THREAD_LIST, WRITE_LOCK | READ_LOCK);
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int i = FindNextUnused (&threadlist);
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ThreadItem *item = (ThreadItem *) GetItem (i, &threadlist);
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if (!item)
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item = (ThreadItem *) SetItem (i, new ThreadItem (), &threadlist);
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if (!item)
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system_printf ("thread creation failed");
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item->used = true;
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item->function = func;
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item->arg = arg;
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item->attr = a;
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item->win32_obj_id = ::CreateThread (&sec_none_nih, item->attr.stacksize,
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(LPTHREAD_START_ROUTINE) thread_init_wrapper, item, 0, &item->thread_id);
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CHECKHANDLE (NULL, 1);
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*t = (pthread_t) item->win32_obj_id;
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return item;
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}
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MutexItem *
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MTinterface::CreateMutex (pthread_mutex_t * mutex)
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{
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AssertResourceOwner (LOCK_MUTEX_LIST, WRITE_LOCK | READ_LOCK);
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int i = FindNextUnused (&mutexlist);
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MutexItem *item = (MutexItem *) GetItem (i, &mutexlist);
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if (!item)
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item = (MutexItem *) SetItem (i, new MutexItem (), &mutexlist);
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if (!item)
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system_printf ("mutex creation failed");
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item->used = true;
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item->win32_obj_id = ::CreateMutex (&sec_none_nih, false, NULL);
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CHECKHANDLE (NULL, 1);
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*mutex = (pthread_mutex_t) item->win32_obj_id;
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return item;
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}
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ThreadItem *
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MTinterface::GetCallingThread ()
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{
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AssertResourceOwner (LOCK_THREAD_LIST, READ_LOCK);
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DWORD id = GetCurrentThreadId ();
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int index = 0;
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return (ThreadItem *) Find (&id, &CmpThreadId, index, &threadlist);
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}
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ThreadItem *
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MTinterface::GetThread (pthread_t * _t)
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{
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AssertResourceOwner (LOCK_THREAD_LIST, READ_LOCK);
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int index = 0;
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return (ThreadItem *) Find (_t, &CmpPthreadObj, index, &threadlist);
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}
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MutexItem *
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MTinterface::GetMutex (pthread_mutex_t * mp)
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{
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AssertResourceOwner (LOCK_MUTEX_LIST, READ_LOCK);
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int index = 0;
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return (MutexItem *) Find (mp, &CmpPthreadObj, index, &mutexlist);
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}
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SemaphoreItem *
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MTinterface::GetSemaphore (sem_t * sp)
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{
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AssertResourceOwner (LOCK_SEM_LIST, READ_LOCK);
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int index = 0;
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return (SemaphoreItem *) Find (sp, &CmpPthreadObj, index, &semalist);
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}
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void
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MTitem::Destroy ()
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{
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CloseHandle (win32_obj_id);
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}
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int
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MutexItem::Lock ()
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{
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return WaitForSingleObject (win32_obj_id, INFINITE);
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}
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int
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MutexItem::TryLock ()
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{
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return WaitForSingleObject (win32_obj_id, 0);
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}
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int
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MutexItem::UnLock ()
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{
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return ReleaseMutex (win32_obj_id);
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}
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SemaphoreItem *
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MTinterface::CreateSemaphore (sem_t * _s, int pshared, int _v)
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{
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AssertResourceOwner (LOCK_SEM_LIST, WRITE_LOCK | READ_LOCK);
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int i = FindNextUnused (&semalist);
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SemaphoreItem *item = (SemaphoreItem *) GetItem (i, &semalist);
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if (!item)
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item = (SemaphoreItem *) SetItem (i, new SemaphoreItem (), &semalist);
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if (!item)
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system_printf ("semaphore creation failed");
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item->used = true;
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item->shared = pshared;
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item->win32_obj_id = ::CreateSemaphore (&sec_none_nih, _v, LONG_MAX, NULL);
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CHECKHANDLE (NULL, 1);
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*_s = (sem_t) item->win32_obj_id;
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return item;
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}
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int
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SemaphoreItem::Wait ()
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{
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return WaitForSingleObject (win32_obj_id, INFINITE);
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}
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int
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SemaphoreItem::Post ()
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{
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long pc;
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return ReleaseSemaphore (win32_obj_id, 1, &pc);
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}
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int
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SemaphoreItem::TryWait ()
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{
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return WaitForSingleObject (win32_obj_id, 0);
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}
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////////////////////////// Pthreads
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void *
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thread_init_wrapper (void *_arg)
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{
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// Setup the local/global storage of this thread
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ThreadItem *thread = (ThreadItem *) _arg;
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struct __reent_t local_reent;
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struct _winsup_t local_winsup;
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struct _reent local_clib;
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struct sigaction _sigs[NSIG];
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sigset_t _sig_mask; /* one set for everything to ignore. */
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LONG _sigtodo[NSIG + __SIGOFFSET];
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// setup signal structures
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thread->sigs = _sigs;
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thread->sigmask = &_sig_mask;
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thread->sigtodo = _sigtodo;
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memset (&local_clib, 0, sizeof (struct _reent));
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memset (&local_winsup, 0, sizeof (struct _winsup_t));
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local_clib._errno = 0;
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local_clib._stdin = &local_clib.__sf[0];
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local_clib._stdout = &local_clib.__sf[1];
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local_clib._stderr = &local_clib.__sf[2];
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local_reent._clib = &local_clib;
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local_reent._winsup = &local_winsup;
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local_winsup._process_logmask = LOG_UPTO (LOG_DEBUG);
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if (!TlsSetValue (MT_INTERFACE->reent_index, &local_reent))
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system_printf ("local storage for thread couldn't be set");
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#ifdef _CYG_THREAD_FAILSAFE
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if (_REENT == _impure_ptr)
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system_printf ("local storage for thread isn't setup correctly");
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#endif
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thread_printf ("started thread %p %p %p %p %p %p", _arg, &local_clib, _impure_ptr, thread, thread->function, thread->arg);
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// call the user's thread
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void *ret = thread->function (thread->arg);
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// FIX ME : cleanup code
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// thread->used = false; // release thread entry
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thread->return_ptr = ret;
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ExitThread (0);
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}
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int
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__pthread_create (pthread_t * thread, const pthread_attr_t * attr, TFD (start_routine), void *arg)
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{
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SetResourceLock (LOCK_THREAD_LIST, WRITE_LOCK | READ_LOCK, "__pthread_create");
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pthread_attr_t a;
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ThreadItem *item;
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if (attr)
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item = MT_INTERFACE->CreateThread (thread, start_routine, arg, *attr);
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else
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{
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__pthread_attr_init (&a);
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item = MT_INTERFACE->CreateThread (thread, start_routine, arg, a);
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}
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CHECKITEM (LOCK_THREAD_LIST, WRITE_LOCK | READ_LOCK, "__pthread_create")
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ReleaseResourceLock (LOCK_THREAD_LIST, WRITE_LOCK | READ_LOCK, "__pthread_create");
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return 0;
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}
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int
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__pthread_attr_init (pthread_attr_t * attr)
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{
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attr->stacksize = 0;
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return 0;
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}
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int
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__pthread_attr_setstacksize (pthread_attr_t * attr, size_t size)
|
|
{
|
|
attr->stacksize = size;
|
|
return 0;
|
|
}
|
|
|
|
int
|
|
__pthread_attr_getstacksize (pthread_attr_t * attr, size_t * size)
|
|
{
|
|
*size = attr->stacksize;
|
|
return 0;
|
|
}
|
|
|
|
int
|
|
__pthread_attr_destroy (pthread_attr_t * /*attr*/)
|
|
{
|
|
return 0;
|
|
}
|
|
|
|
int
|
|
__pthread_exit (void *value_ptr)
|
|
{
|
|
ThreadItem *item = MT_INTERFACE->GetCallingThread ();
|
|
item->return_ptr = value_ptr;
|
|
ExitThread (0);
|
|
return 0;
|
|
}
|
|
|
|
int
|
|
__pthread_join (pthread_t * thread, void **return_val)
|
|
{
|
|
ThreadItem *item=user_data->threadinterface->GetThread (thread);
|
|
|
|
|
|
if (!item)
|
|
return ESRCH;
|
|
|
|
if (item->joinable == 'N')
|
|
{
|
|
if (return_val)
|
|
*return_val = NULL;
|
|
return EINVAL;
|
|
}
|
|
else
|
|
{
|
|
item->joinable = 'N';
|
|
WaitForSingleObject ((HANDLE)*thread, INFINITE);
|
|
if (return_val)
|
|
*return_val = item->return_ptr;
|
|
}/* End if*/
|
|
|
|
return 0;
|
|
}
|
|
|
|
int
|
|
__pthread_detach (pthread_t * thread)
|
|
{
|
|
ThreadItem *item=user_data->threadinterface->GetThread (thread);
|
|
if (!item)
|
|
return ESRCH;
|
|
|
|
if (item->joinable == 'N')
|
|
{
|
|
item->return_ptr = NULL;
|
|
return EINVAL;
|
|
}
|
|
|
|
item->joinable = 'N';
|
|
return 0;
|
|
}
|
|
|
|
int
|
|
__pthread_suspend (pthread_t * thread)
|
|
{
|
|
ThreadItem *item=user_data->threadinterface->GetThread (thread);
|
|
if (!item)
|
|
return ESRCH;
|
|
|
|
if (item->suspended == false)
|
|
{
|
|
item->suspended = true;
|
|
SuspendThread ((HANDLE)*thread);
|
|
}
|
|
|
|
return 0;
|
|
}
|
|
|
|
|
|
int
|
|
__pthread_continue (pthread_t * thread)
|
|
{
|
|
ThreadItem *item=user_data->threadinterface->GetThread (thread);
|
|
if (!item)
|
|
return ESRCH;
|
|
|
|
if (item->suspended == true)
|
|
ResumeThread ((HANDLE)*thread);
|
|
item->suspended = false;
|
|
|
|
return 0;
|
|
}
|
|
|
|
|
|
|
|
|
|
unsigned long
|
|
__pthread_getsequence_np (pthread_t * thread)
|
|
{
|
|
GETTHREAD ("__pthread_getsequence_np");
|
|
return item->GetThreadId ();
|
|
}
|
|
|
|
/* Thread SpecificData */
|
|
int
|
|
__pthread_key_create (pthread_key_t */*key*/)
|
|
{
|
|
NOT_IMP ("_p_key_create\n");
|
|
}
|
|
|
|
int
|
|
__pthread_key_delete (pthread_key_t */*key*/)
|
|
{
|
|
NOT_IMP ("_p_key_delete\n");
|
|
}
|
|
int
|
|
__pthread_setspecific (pthread_key_t */*key*/, const void */*value*/)
|
|
{
|
|
NOT_IMP ("_p_key_setsp\n");
|
|
}
|
|
void *
|
|
__pthread_getspecific (pthread_key_t */*key*/)
|
|
{
|
|
NOT_IMP ("_p_key_getsp\n");
|
|
}
|
|
|
|
/* Thread signal */
|
|
int
|
|
__pthread_kill (pthread_t * thread, int sig)
|
|
{
|
|
// lock myself, for the use of thread2signal
|
|
// two differ kills might clash: FIX ME
|
|
GETTHREAD ("__pthread_kill");
|
|
|
|
if (item->sigs)
|
|
myself->setthread2signal (item);
|
|
|
|
int rval = _kill (myself->pid, sig);
|
|
|
|
// unlock myself
|
|
return rval;
|
|
|
|
}
|
|
|
|
int
|
|
__pthread_sigmask (int operation, const sigset_t * set, sigset_t * old_set)
|
|
{
|
|
SetResourceLock (LOCK_THREAD_LIST, READ_LOCK, "__pthread_sigmask");
|
|
ThreadItem *item = MT_INTERFACE->GetCallingThread ();
|
|
ReleaseResourceLock (LOCK_THREAD_LIST, READ_LOCK, "__pthread_sigmask");
|
|
|
|
// lock this myself, for the use of thread2signal
|
|
// two differt kills might clash: FIX ME
|
|
|
|
if (item->sigs)
|
|
myself->setthread2signal (item);
|
|
|
|
int rval = sigprocmask (operation, set, old_set);
|
|
|
|
// unlock this myself
|
|
|
|
return rval;
|
|
}
|
|
|
|
/* ID */
|
|
pthread_t
|
|
__pthread_self ()
|
|
{
|
|
SetResourceLock (LOCK_THREAD_LIST, READ_LOCK, "__pthread_self");
|
|
|
|
ThreadItem *item = MT_INTERFACE->GetCallingThread ();
|
|
|
|
ReleaseResourceLock (LOCK_THREAD_LIST, READ_LOCK, "__pthread_self");
|
|
return (pthread_t) item->Id ();
|
|
|
|
}
|
|
|
|
int
|
|
__pthread_equal (pthread_t * t1, pthread_t * t2)
|
|
{
|
|
return (*t1 - *t2);
|
|
}
|
|
|
|
/* Mutexes */
|
|
|
|
int
|
|
__pthread_mutex_init (pthread_mutex_t * mutex, const pthread_mutexattr_t */*_attr*/)
|
|
{
|
|
SetResourceLock (LOCK_MUTEX_LIST, WRITE_LOCK | READ_LOCK, "__pthread_mutex_init");
|
|
|
|
MutexItem *item = MT_INTERFACE->CreateMutex (mutex);
|
|
|
|
CHECKITEM (LOCK_MUTEX_LIST, WRITE_LOCK | READ_LOCK, "__pthread_mutex_init");
|
|
|
|
ReleaseResourceLock (LOCK_MUTEX_LIST, WRITE_LOCK | READ_LOCK, "__pthread_mutex_init");
|
|
return 0;
|
|
}
|
|
|
|
int
|
|
__pthread_mutex_lock (pthread_mutex_t * mutex)
|
|
{
|
|
GETMUTEX ("_ptherad_mutex_lock");
|
|
|
|
item->Lock ();
|
|
|
|
return 0;
|
|
}
|
|
|
|
int
|
|
__pthread_mutex_trylock (pthread_mutex_t * mutex)
|
|
{
|
|
GETMUTEX ("_ptherad_mutex_lock");
|
|
|
|
if (item->TryLock () == WAIT_TIMEOUT)
|
|
return EBUSY;
|
|
|
|
return 0;
|
|
}
|
|
|
|
int
|
|
__pthread_mutex_unlock (pthread_mutex_t * mutex)
|
|
{
|
|
GETMUTEX ("_ptherad_mutex_lock");
|
|
|
|
item->UnLock ();
|
|
|
|
return 0;
|
|
}
|
|
|
|
int
|
|
__pthread_mutex_destroy (pthread_mutex_t * mutex)
|
|
{
|
|
SetResourceLock (LOCK_MUTEX_LIST, READ_LOCK | WRITE_LOCK, "__pthread_mutex_destroy");
|
|
|
|
MutexItem *item = MT_INTERFACE->GetMutex (mutex);
|
|
|
|
CHECKITEM (LOCK_MUTEX_LIST, WRITE_LOCK | READ_LOCK, "__pthread_mutex_init");
|
|
|
|
item->Destroy ();
|
|
|
|
MT_INTERFACE->ReleaseItem (item);
|
|
|
|
ReleaseResourceLock (LOCK_MUTEX_LIST, READ_LOCK | WRITE_LOCK, "__pthread_mutex_destroy");
|
|
return 0;
|
|
}
|
|
|
|
/* Semaphores */
|
|
int
|
|
__sem_init (sem_t * sem, int pshared, unsigned int value)
|
|
{
|
|
SetResourceLock (LOCK_SEM_LIST, READ_LOCK | WRITE_LOCK, "__sem_init");
|
|
|
|
SemaphoreItem *item = MT_INTERFACE->CreateSemaphore (sem, pshared, value);
|
|
|
|
CHECKITEM (LOCK_SEM_LIST, READ_LOCK | WRITE_LOCK, "__sem_init");
|
|
|
|
ReleaseResourceLock (LOCK_SEM_LIST, READ_LOCK | WRITE_LOCK, "__sem_init");
|
|
return 0;
|
|
}
|
|
|
|
int
|
|
__sem_destroy (sem_t * sem)
|
|
{
|
|
SetResourceLock (LOCK_SEM_LIST, READ_LOCK | WRITE_LOCK, "__sem_destroy");
|
|
|
|
SemaphoreItem *item = MT_INTERFACE->GetSemaphore (sem);
|
|
|
|
CHECKITEM (LOCK_SEM_LIST, READ_LOCK | WRITE_LOCK, "__sem_init");
|
|
|
|
item->Destroy ();
|
|
|
|
MT_INTERFACE->ReleaseItem (item);
|
|
|
|
ReleaseResourceLock (LOCK_SEM_LIST, READ_LOCK | WRITE_LOCK, "__sem_destroy");
|
|
return 0;
|
|
}
|
|
|
|
int
|
|
__sem_wait (sem_t * sem)
|
|
{
|
|
GETSEMA ("__sem_wait");
|
|
|
|
item->Wait ();
|
|
|
|
return 0;
|
|
}
|
|
|
|
int
|
|
__sem_trywait (sem_t * sem)
|
|
{
|
|
GETSEMA ("__sem_trywait");
|
|
|
|
if (item->TryWait () == WAIT_TIMEOUT)
|
|
return EAGAIN;
|
|
|
|
return 0;
|
|
}
|
|
|
|
int
|
|
__sem_post (sem_t * sem)
|
|
{
|
|
GETSEMA ("__sem_post");
|
|
|
|
item->Post ();
|
|
|
|
return 0;
|
|
}
|
|
|
|
|
|
#else
|
|
|
|
// empty functions needed when makeing the dll without mt_safe support
|
|
extern "C"
|
|
{
|
|
int __pthread_create (pthread_t *, const pthread_attr_t *, TFD (start_routine), void *arg)
|
|
{
|
|
return -1;
|
|
}
|
|
int __pthread_attr_init (pthread_attr_t * attr)
|
|
{
|
|
return -1;
|
|
}
|
|
int __pthread_attr_destroy (pthread_attr_t * attr)
|
|
{
|
|
return -1;
|
|
}
|
|
int __pthread_attr_setstacksize (pthread_attr_t * attr, size_t size)
|
|
{
|
|
return -1;
|
|
}
|
|
int __pthread_attr_getstacksize (pthread_attr_t * attr, size_t * size)
|
|
{
|
|
return -1;
|
|
}
|
|
/*
|
|
__pthread_attr_setstackaddr (...){ return -1; };
|
|
__pthread_attr_getstackaddr (...){ return -1; };
|
|
*/
|
|
int __pthread_exit (void *value_ptr)
|
|
{
|
|
return -1;
|
|
}
|
|
|
|
int __pthread_join (pthread_t thread_id, void **return_val)
|
|
{
|
|
return -1;
|
|
}
|
|
|
|
unsigned long __pthread_getsequence_np (pthread_t * thread)
|
|
{
|
|
return 0;
|
|
}
|
|
int __pthread_key_create (pthread_key_t * key)
|
|
{
|
|
return -1;
|
|
}
|
|
int __pthread_key_delete (pthread_key_t * key)
|
|
{
|
|
return -1;
|
|
}
|
|
int __pthread_setspecific (pthread_key_t * key, const void *value)
|
|
{
|
|
return -1;
|
|
}
|
|
void *__pthread_getspecific (pthread_key_t * key)
|
|
{
|
|
return NULL;
|
|
}
|
|
int __pthread_kill (pthread_t * thread, int sig)
|
|
{
|
|
return -1;
|
|
}
|
|
int __pthread_sigmask (int operation, const sigset_t * set, sigset_t * old_set)
|
|
{
|
|
return -1;
|
|
}
|
|
pthread_t __pthread_self ()
|
|
{
|
|
return -1;
|
|
}
|
|
int __pthread_equal (pthread_t * t1, pthread_t * t2)
|
|
{
|
|
return -1;
|
|
}
|
|
int __pthread_mutex_init (pthread_mutex_t *, const pthread_mutexattr_t *)
|
|
{
|
|
return -1;
|
|
}
|
|
int __pthread_mutex_lock (pthread_mutex_t *)
|
|
{
|
|
return -1;
|
|
}
|
|
int __pthread_mutex_trylock (pthread_mutex_t *)
|
|
{
|
|
return -1;
|
|
}
|
|
int __pthread_mutex_unlock (pthread_mutex_t *)
|
|
{
|
|
return -1;
|
|
}
|
|
int __pthread_mutex_destroy (pthread_mutex_t *)
|
|
{
|
|
return -1;
|
|
}
|
|
int __sem_init (sem_t * sem, int pshared, unsigned int value)
|
|
{
|
|
return -1;
|
|
}
|
|
int __sem_destroy (sem_t * sem)
|
|
{
|
|
return -1;
|
|
}
|
|
int __sem_wait (sem_t * sem)
|
|
{
|
|
return -1;
|
|
}
|
|
int __sem_trywait (sem_t * sem)
|
|
{
|
|
return -1;
|
|
}
|
|
int __sem_post (sem_t * sem)
|
|
{
|
|
return -1;
|
|
}
|
|
struct _reent *_reent_clib ()
|
|
{
|
|
return NULL;
|
|
}
|
|
}
|
|
|
|
#endif // MT_SAFE
|