#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;
#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
typedef HANDLE perl_mutex;
-#define MUTEX_INIT(m) \
+# 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) \
+ Perl_croak(aTHX_ "panic: MUTEX_LOCK"); \
+ } STMT_END
+
+# define MUTEX_UNLOCK(m) \
+ STMT_START { \
+ if (ReleaseMutex(*(m)) == 0) \
+ Perl_croak(aTHX_ "panic: MUTEX_UNLOCK"); \
} STMT_END
-#define MUTEX_LOCK(m) \
+
+# define MUTEX_LOCK_NOCONTEXT(m) \
STMT_START { \
if (WaitForSingleObject(*(m),INFINITE) == WAIT_FAILED) \
- croak("panic: MUTEX_LOCK"); \
+ Perl_croak_nocontext("panic: MUTEX_LOCK"); \
} STMT_END
-#define MUTEX_UNLOCK(m) \
+
+# define MUTEX_UNLOCK_NOCONTEXT(m) \
STMT_START { \
if (ReleaseMutex(*(m)) == 0) \
- croak("panic: MUTEX_UNLOCK"); \
+ Perl_croak_nocontext("panic: MUTEX_UNLOCK"); \
} STMT_END
-#define MUTEX_DESTROY(m) \
+
+# define MUTEX_DESTROY(m) \
STMT_START { \
if (CloseHandle(*(m)) == 0) \
- croak("panic: MUTEX_DESTROY"); \
+ Perl_croak(aTHX_ "panic: MUTEX_DESTROY"); \
} STMT_END
#endif
(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) \
* 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--; \
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 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
-#if defined(PERLDLL) && (!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
+#if defined(PERLDLL) && defined(USE_DECLSPEC_THREAD) && (!defined(__BORLANDC__) || defined(_DLL))
+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 THR Perl_getTHR()
-#define SET_THR(t) Perl_setTHR(t)
+#define PERL_GET_CONTEXT Perl_get_context()
+#define PERL_SET_CONTEXT(t) Perl_set_context(t)
#endif
-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));
-END_EXTERN_C
+#if defined(USE_THREADS)
+struct perl_thread;
+int Perl_thread_create (struct perl_thread *thr, thread_func_t *fn);
+void Perl_set_thread_self (struct perl_thread *thr);
+void Perl_init_thread_intern (struct perl_thread *t);
-#define INIT_THREADS NOOP
-#define ALLOC_THREAD_KEY NOOP
#define SET_THREAD_SELF(thr) Perl_set_thread_self(thr)
+#endif /* USE_THREADS */
+
+END_EXTERN_C
+
+#define INIT_THREADS NOOP
+#define ALLOC_THREAD_KEY \
+ STMT_START { \
+ if ((PL_thr_key = TlsAlloc()) == TLS_OUT_OF_INDEXES) { \
+ fprintf(stderr,"panic: TlsAlloc"); \
+ exit(1); \
+ } \
+ } STMT_END
+
+#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) \
+ || (CloseHandle((t)->self) == 0)) \
+ Perl_croak(aTHX_ "panic: JOIN"); \
+ *avp = (AV *)((t)->i.retv); \
+ } STMT_END
+#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)) \
- croak("panic: JOIN"); \
+ || (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)
https://perl5.git.perl.org / perl5.git / blobdiff