Subj : Re: Building thread-safe SpiderMonkey for Win32
To   : netscape.public.mozilla.jseng
From : developir@yahoo.com (J. Wilson)
Date : Wed Mar 17 2004 05:19 pm

Brendan Eich <brendan@meer.net> wrote in message news:<c3a43h$3oq1@ripley.netscape.com>...
> Bob Kline wrote:
> > 
> > There actually is support for using gmake on Windows under cygwin.  It's 
> > just broken by a disconnect between the SpiderMonkey and NSPR 
> > assumptions about where the NSPR components can be found.  See my last 
> > two responses to Benjamin Smedberg in this ng thread.  Can a thread-safe 
> > SpiderMonkey be built without NSPR?
> 
> Not without emulating a bunch of NSPR thread, lock, and condvar APIs on 
> top of native threads -- which amounts to reimplementing NSPR in those 
> repects, which is silly given NSPR's portability.

I did exactly this to avoid using NSPR.
It's quite simple - you only have to implement 12 functions...

pratom.h:
#include "spider_threads.h"

prcvar.h:
#include "spider_threads.h"

prlock.h:
#include "spider_threads.h"

prthread.h:
#include "spider_threads.h"

spider_threads.h:
#ifndef __spider_threads_h__
#define __spider_threads_h__

#ifdef __cplusplus
extern "C" {
#endif

/* Structs are forward declared here.
 * Full declaration inside spider_threads.c
 */
typedef struct PRCondVar PRCondVar;
typedef struct PRLock    PRLock;
typedef struct PRThread  PRThread;
typedef int              PRInt32;
typedef unsigned long    PRIntervalTime;

#define PR_INTERVAL_NO_TIMEOUT (0xffffffffUL)

typedef enum { PR_SUCCESS = 0, PR_FAILURE = -1 } PRStatus;

extern PRThread*  PR_GetCurrentThread();
extern PRLock*    PR_NewLock(void);
extern void       PR_DestroyLock(PRLock* lock);
extern void       PR_Lock(PRLock* lock);
extern PRStatus   PR_Unlock(PRLock* lock);
extern PRCondVar* PR_NewCondVar(PRLock* lock);
extern void       PR_DestroyCondVar(PRCondVar* cvar);
extern PRStatus   PR_WaitCondVar(PRCondVar* cvar, PRIntervalTime timeout);
extern PRStatus   PR_NotifyCondVar(PRCondVar* cvar);
extern PRStatus   PR_NotifyAllCondVar(PRCondVar* cvar);
extern PRInt32    PR_AtomicIncrement(PRInt32* val);
extern PRInt32    PR_AtomicDecrement(PRInt32* val);

#ifdef __cplusplus
};
#endif

#endif

spider_threads.c:
#include "spider_threads.h"
/*
   Put your OS-specific implementation of the PR_XXX()
   functions here.

   Implement the PRCondVar, PRLock and PRThread structs 
   in this file any way you like.
*/

.