X-Git-Url: http://git.shadowcat.co.uk/gitweb/gitweb.cgi?a=blobdiff_plain;f=win32%2Fwin32thread.h;h=d4f8ee409e43b961b856ffe810bb29e2d06791d0;hb=b26a54d078afd95fdb1f671f519e49b10272f657;hp=76392cff779e316fde66f2ac64a515ac7dc305c9;hpb=51dd5992be029393cb3f221313a1a6ec2a76c21a;p=p5sagit%2Fp5-mst-13.2.git

diff --git a/win32/win32thread.h b/win32/win32thread.h
index 76392cf..d4f8ee4 100644
--- a/win32/win32thread.h
+++ b/win32/win32thread.h
@@ -1,5 +1,8 @@
 #ifndef _WIN32THREAD_H
 #define _WIN32THREAD_H
+
+#include "win32.h"
+
 typedef struct win32_cond { LONG waiters; HANDLE sem; } perl_cond;
 typedef DWORD perl_key;
 typedef HANDLE perl_os_thread;
@@ -14,6 +17,8 @@ typedef CRITICAL_SECTION perl_mutex;
 #define MUTEX_INIT(m) InitializeCriticalSection(m)
 #define MUTEX_LOCK(m) EnterCriticalSection(m)
 #define MUTEX_UNLOCK(m) LeaveCriticalSection(m)
+#define MUTEX_LOCK_NOCONTEXT(m) EnterCriticalSection(m)
+#define MUTEX_UNLOCK_NOCONTEXT(m) LeaveCriticalSection(m)
 #define MUTEX_DESTROY(m) DeleteCriticalSection(m)
 
 #else
@@ -22,22 +27,32 @@ typedef HANDLE perl_mutex;
 #define MUTEX_INIT(m) \
     STMT_START {						\
 	if ((*(m) = CreateMutex(NULL,FALSE,NULL)) == NULL)	\
-	    croak("panic: MUTEX_INIT");				\
+	    Perl_croak(aTHX_ "panic: MUTEX_INIT");				\
     } STMT_END
 #define MUTEX_LOCK(m) \
     STMT_START {						\
 	if (WaitForSingleObject(*(m),INFINITE) == WAIT_FAILED)	\
-	    croak("panic: MUTEX_LOCK");				\
+	    Perl_croak(aTHX_ "panic: MUTEX_LOCK");		\
     } STMT_END
 #define MUTEX_UNLOCK(m) \
     STMT_START {						\
 	if (ReleaseMutex(*(m)) == 0)				\
-	    croak("panic: MUTEX_UNLOCK");			\
+	    Perl_croak(aTHX_ "panic: MUTEX_UNLOCK");		\
+    } STMT_END
+#define MUTEX_LOCK_NOCONTEXT(m) \
+    STMT_START {						\
+	if (WaitForSingleObject(*(m),INFINITE) == WAIT_FAILED)	\
+	    Perl_croak_nocontext("panic: MUTEX_LOCK");		\
+    } STMT_END
+#define MUTEX_UNLOCK_NOCONTEXT(m) \
+    STMT_START {						\
+	if (ReleaseMutex(*(m)) == 0)				\
+	    Perl_croak_nocontext("panic: MUTEX_UNLOCK");	\
     } STMT_END
 #define MUTEX_DESTROY(m) \
     STMT_START {						\
 	if (CloseHandle(*(m)) == 0)				\
-	    croak("panic: MUTEX_DESTROY");			\
+	    Perl_croak(aTHX_ "panic: MUTEX_DESTROY");		\
     } STMT_END
 
 #endif
@@ -51,21 +66,21 @@ typedef HANDLE perl_mutex;
 	(c)->waiters = 0;					\
 	(c)->sem = CreateSemaphore(NULL,0,LONG_MAX,NULL);	\
 	if ((c)->sem == NULL)					\
-	    croak("panic: COND_INIT (%ld)",GetLastError());	\
+	    Perl_croak(aTHX_ "panic: COND_INIT (%ld)",GetLastError());	\
     } STMT_END
 
 #define COND_SIGNAL(c) \
     STMT_START {						\
 	if ((c)->waiters > 0 &&					\
 	    ReleaseSemaphore((c)->sem,1,NULL) == 0)		\
-	    croak("panic: COND_SIGNAL (%ld)",GetLastError());	\
+	    Perl_croak(aTHX_ "panic: COND_SIGNAL (%ld)",GetLastError());	\
     } STMT_END
 
 #define COND_BROADCAST(c) \
     STMT_START {						\
 	if ((c)->waiters > 0 &&					\
 	    ReleaseSemaphore((c)->sem,(c)->waiters,NULL) == 0)	\
-	    croak("panic: COND_BROADCAST (%ld)",GetLastError());\
+	    Perl_croak(aTHX_ "panic: COND_BROADCAST (%ld)",GetLastError());\
     } STMT_END
 
 #define COND_WAIT(c, m) \
@@ -76,7 +91,7 @@ typedef HANDLE perl_mutex;
 	 * COND_BROADCAST() on another thread will have seen the\
 	 * right number of waiters (i.e. including this one) */	\
 	if (WaitForSingleObject((c)->sem,INFINITE)==WAIT_FAILED)\
-	    croak("panic: COND_WAIT (%ld)",GetLastError());	\
+	    Perl_croak(aTHX_ "panic: COND_WAIT (%ld)",GetLastError());	\
 	/* XXX there may be an inconsequential race here */	\
 	MUTEX_LOCK(m);						\
 	(c)->waiters--;						\
@@ -86,48 +101,102 @@ typedef HANDLE perl_mutex;
     STMT_START {						\
 	(c)->waiters = 0;					\
 	if (CloseHandle((c)->sem) == 0)				\
-	    croak("panic: COND_DESTROY (%ld)",GetLastError());	\
+	    Perl_croak(aTHX_ "panic: COND_DESTROY (%ld)",GetLastError());	\
     } STMT_END
 
 #define DETACH(t) \
     STMT_START {						\
 	if (CloseHandle((t)->self) == 0) {			\
 	    MUTEX_UNLOCK(&(t)->mutex);				\
-	    croak("panic: DETACH");				\
+	    Perl_croak(aTHX_ "panic: DETACH");				\
 	}							\
     } STMT_END
 
-#define THR ((struct thread *) TlsGetValue(thr_key))
+
 #define THREAD_CREATE(t, f)	Perl_thread_create(t, f)
 #define THREAD_POST_CREATE(t)	NOOP
-#define THREAD_RET_TYPE		DWORD WINAPI
-#define THREAD_RET_CAST(p)	((DWORD)(p))
+
+/* XXX Docs mention that the RTL versions of thread creation routines
+ * should be used, but that advice only seems applicable when the RTL
+ * is not in a DLL.  RTL DLLs in both Borland and VC seem to do all of
+ * the init/deinit required upon DLL_THREAD_ATTACH/DETACH.  So we seem
+ * to be completely safe using straight Win32 API calls, rather than
+ * the much braindamaged RTL calls.
+ *
+ * _beginthread() in the RTLs call CloseHandle() just after the thread
+ * function returns, which means: 1) we have a race on our hands
+ * 2) it is impossible to implement join() semantics.
+ *
+ * IOW, do *NOT* turn on USE_RTL_THREAD_API!  It is here
+ * for experimental purposes only. GSAR 98-01-02
+ */
+#ifdef USE_RTL_THREAD_API
+#  include <process.h>
+#  if defined(__BORLANDC__)
+     /* Borland RTL doesn't allow a return value from thread function! */
+#    define THREAD_RET_TYPE	void _USERENTRY
+#    define THREAD_RET_CAST(p)	((void)(thr->i.retv = (void *)(p)))
+#  elif defined (_MSC_VER)
+#    define THREAD_RET_TYPE	unsigned __stdcall
+#    define THREAD_RET_CAST(p)	((unsigned)(p))
+#  else
+     /* CRTDLL.DLL doesn't allow a return value from thread function! */
+#    define THREAD_RET_TYPE	void __cdecl
+#    define THREAD_RET_CAST(p)	((void)(thr->i.retv = (void *)(p)))
+#  endif
+#else	/* !USE_RTL_THREAD_API */
+#  define THREAD_RET_TYPE	DWORD WINAPI
+#  define THREAD_RET_CAST(p)	((DWORD)(p))
+#endif	/* !USE_RTL_THREAD_API */
 
 typedef THREAD_RET_TYPE thread_func_t(void *);
 
+
 START_EXTERN_C
-void Perl_alloc_thread_key _((void));
-int Perl_thread_create _((struct thread *thr, thread_func_t *fn));
-void Perl_set_thread_self _((struct thread *thr));
+
+#if defined(PERLDLL) && defined(USE_DECLSPEC_THREAD) && (!defined(__BORLANDC__) || defined(_DLL))
+extern __declspec(thread) struct perl_thread *Perl_current_thread;
+#define SET_THR(t)   		(Perl_current_thread = t)
+#define THR			Perl_current_thread
+#else
+#define THR			Perl_getTHR()
+#define SET_THR(t)		Perl_setTHR(t)
+#endif
+struct perl_thread;
+
+void Perl_alloc_thread_key (void);
+int Perl_thread_create (struct perl_thread *thr, thread_func_t *fn);
+void Perl_set_thread_self (struct perl_thread *thr);
+struct perl_thread *Perl_getTHR (void);
+void Perl_setTHR (struct perl_thread *t);
+void Perl_init_thread_intern (struct perl_thread *t);
+
 END_EXTERN_C
 
 #define INIT_THREADS NOOP
 #define ALLOC_THREAD_KEY Perl_alloc_thread_key()
 #define SET_THREAD_SELF(thr) Perl_set_thread_self(thr)
 
+#if defined(USE_RTL_THREAD_API) && !defined(_MSC_VER)
 #define JOIN(t, avp)							\
     STMT_START {							\
 	if ((WaitForSingleObject((t)->self,INFINITE) == WAIT_FAILED)	\
-	     || (GetExitCodeThread((t)->self,(LPDWORD)(avp)) == 0))	\
-	    croak("panic: JOIN");					\
+	     || (GetExitCodeThread((t)->self,(LPDWORD)(avp)) == 0)	\
+	     || (CloseHandle((t)->self) == 0))				\
+	    Perl_croak(aTHX_ "panic: JOIN");					\
+	*avp = (AV *)((t)->i.retv);					\
     } STMT_END
-
-#define SET_THR(t)					\
-    STMT_START {					\
-	if (TlsSetValue(thr_key, (void *) (t)) == 0)	\
-	    croak("panic: TlsSetValue");		\
+#else	/* !USE_RTL_THREAD_API || _MSC_VER */
+#define JOIN(t, avp)							\
+    STMT_START {							\
+	if ((WaitForSingleObject((t)->self,INFINITE) == WAIT_FAILED)	\
+	     || (GetExitCodeThread((t)->self,(LPDWORD)(avp)) == 0)	\
+	     || (CloseHandle((t)->self) == 0))				\
+	    Perl_croak(aTHX_ "panic: JOIN");				\
     } STMT_END
+#endif	/* !USE_RTL_THREAD_API || _MSC_VER */
 
 #define YIELD			Sleep(0)
 
 #endif /* _WIN32THREAD_H */
+