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/*
* Copyright © 2001 Novell, Inc. All Rights Reserved.
*
* You may distribute under the terms of either the GNU General Public
* License or the Artistic License, as specified in the README file.
*
*/
/*
* FILENAME : nw5thread.h
* DESCRIPTION : Thread related functions.
* Author : SGP
* Date : January 2001.
*
*/
#ifndef _NW5THREAD_H
#define _NW5THREAD_H
#include <nwthread.h>
#include "netware.h"
typedef long perl_key;
// The line below is just a definition to avoid compilation error.
// It is not being used anywhere.
// Ananth, 3 Sept 2001
typedef struct nw_cond { long waiters; unsigned int sem; } perl_cond;
#if defined (USE_ITHREADS) && defined(MPK_ON)
#ifdef __cplusplus
extern "C"
{
#endif
#include <mpktypes.h>
#include <mpkapis.h>
#define kSUCCESS (0)
#define ERROR_INVALID_MUTEX (0x1010)
#ifdef __cplusplus
}
#endif
#undef WORD
//On NetWare, since the NLM will be resident, only once the MUTEX_INIT gets called and
//this will be freed when the script terminates. But when a new script is executed,
//then MUTEX_LOCK will fail since it is already freed. Even if this problem is fixed
//by not freeing the mutex when script terminates but when the NLM unloads, there will
//still be problems when multiple scripts are running simultaneously in a multi-processor
//machine - sgp
typedef MUTEX perl_mutex;
# define MUTEX_INIT(m) \
STMT_START { \
/*if ((*(m) = kMutexAlloc("NetWarePerlMutex")) == NULL) */\
/*Perl_croak_nocontext("panic: MUTEX_ALLOC"); */\
/*ConsolePrintf("Mutex Init %d\n",*(m)); */\
} STMT_END
# define MUTEX_LOCK(m) \
STMT_START { \
/*ConsolePrintf("Mutex lock %d\n",*(m)); */\
/*if (kMutexLock(*(m)) == ERROR_INVALID_MUTEX) */\
/*Perl_croak_nocontext("panic: MUTEX_LOCK"); */\
} STMT_END
# define MUTEX_UNLOCK(m) \
STMT_START { \
/*ConsolePrintf("Mutex unlock %d\n",*(m)); */\
/*if (kMutexUnlock(*(m)) != kSUCCESS) \
Perl_croak_nocontext("panic: MUTEX_UNLOCK"); */\
} STMT_END
# define MUTEX_DESTROY(m) \
STMT_START { \
/*ConsolePrintf("Mutex Destroy %d\n",*(m)); */\
/*if (kMutexWaitCount(*(m)) == 0 ) */\
/*{ */\
/*PERL_SET_INTERP(NULL); *//*newly added CHKSGP???*/ \
/*if (kMutexFree(*(m)) != kSUCCESS) */ \
/*Perl_croak_nocontext("panic: MUTEX_FREE"); */\
/*} */\
} STMT_END
#else
typedef unsigned long perl_mutex;
# define MUTEX_INIT(m)
# define MUTEX_LOCK(m)
# define MUTEX_UNLOCK(m)
# define MUTEX_DESTROY(m)
#endif
/* These macros assume that the mutex associated with the condition
* will always be held before COND_{SIGNAL,BROADCAST,WAIT,DESTROY},
* so there's no separate mutex protecting access to (c)->waiters
*/
//For now let us just see when this happens -sgp.
#define COND_INIT(c) \
STMT_START { \
/*ConsolePrintf("In COND_INIT\n"); */\
} STMT_END
/* (c)->waiters = 0; \
(c)->sem = OpenLocalSemaphore (0); \
if ((c)->sem == NULL) \
Perl_croak_nocontext("panic: COND_INIT (%ld)",errno); \*/
#define COND_SIGNAL(c) \
STMT_START { \
/*ConsolePrintf("In COND_SIGNAL\n"); */\
} STMT_END
/*if ((c)->waiters > 0 && \
SignalLocalSemaphore((c)->sem) != 0) \
Perl_croak_nocontext("panic: COND_SIGNAL (%ld)",errno); \*/
#define COND_BROADCAST(c) \
STMT_START { \
/*ConsolePrintf("In COND_BROADCAST\n"); */\
} STMT_END
/*if ((c)->waiters > 0 ) { \
int count; \
for(count=0; count<(c)->waiters; count++) { \
if(SignalLocalSemaphore((c)->sem) != 0) \
Perl_croak_nocontext("panic: COND_BROADCAST (%ld)",GetLastError());\
} \
} \*/
#define COND_WAIT(c, m) \
STMT_START { \
/*ConsolePrintf("In COND_WAIT\n"); */\
} STMT_END
#define COND_DESTROY(c) \
STMT_START { \
/*ConsolePrintf("In COND_DESTROY\n"); */\
} STMT_END
/* (c)->waiters = 0; \
if (CloseLocalSemaphore((c)->sem) != 0) \
Perl_croak_nocontext("panic: COND_DESTROY (%ld)",errno); \*/
#if 0
#define DETACH(t) \
STMT_START { \
if (CloseHandle((t)->self) == 0) { \
MUTEX_UNLOCK(&(t)->mutex); \
Perl_croak_nocontext("panic: DETACH"); \
} \
} STMT_END
#endif //#if 0
//Following has to be defined CHKSGP
#if defined(PERLDLL) && defined(USE_DECLSPEC_THREAD)
extern __declspec(thread) void *PL_current_context;
#define PERL_SET_CONTEXT(t) (PL_current_context = t)
#define PERL_GET_CONTEXT PL_current_context
#else
#define PERL_GET_CONTEXT Perl_get_context()
#define PERL_SET_CONTEXT(t) Perl_set_context(t)
#endif
//Check the following, will be used in Thread extension - CHKSGP
#define THREAD_RET_TYPE unsigned __stdcall
#define THREAD_RET_CAST(p) ((unsigned)(p))
#define INIT_THREADS NOOP
//Ideally this should have been PL_thr_key = fnInitializeThreadCtx();
//See the comment at the end of file nw5thread.c as to why PL_thr_key is not assigned - sgp
#define ALLOC_THREAD_KEY \
STMT_START { \
fnInitializeThreadCtx(); \
} STMT_END
#endif /* _NW5THREAD_H */
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