/* -----------------------------------------------------------------------------
- * $Id: TSO.h,v 1.20 2001/03/22 03:51:09 hwloidl Exp $
+ * $Id: TSO.h,v 1.32 2003/09/21 22:20:53 wolfgang Exp $
*
* (c) The GHC Team, 1998-1999
*
* The what_next field of a TSO indicates how the thread is to be run.
*/
typedef enum {
- ThreadEnterGHC, /* enter top thunk on stack */
ThreadRunGHC, /* return to address on top of stack */
- ThreadEnterInterp, /* enter top thunk on stack (w/ interpreter) */
+ ThreadInterpret, /* interpret this thread */
ThreadKilled, /* thread has died, don't run it */
ThreadRelocated, /* thread has moved, link points to new locn */
ThreadComplete /* thread has finished */
} StgTSOWhatNext;
/*
- * We are completely paranoid and make thread IDs 64 bits to avoid
- * having to worry about overflow. A little calculation shows that
- * even doing 10^6 forks per second would take 35 million years to
- * overflow a 64 bit thread ID :-)
- *
+ * Thread IDs are 32 bits.
*/
typedef StgWord32 StgThreadID;
BlockedOnRead,
BlockedOnWrite,
BlockedOnDelay
+#if defined(mingw32_TARGET_OS)
+ , BlockedOnDoProc
+#endif
#if defined(PAR)
, BlockedOnGA // blocked on a remote closure represented by a Global Address
, BlockedOnGA_NoSend // same as above but without sending a Fetch message
#endif
+#if defined(RTS_SUPPORTS_THREADS)
+ , BlockedOnCCall
+ , BlockedOnCCall_NoUnblockExc // same as above but don't unblock async exceptions
+ // in resumeThread()
+#endif
} StgTSOBlockReason;
+#if defined(mingw32_TARGET_OS)
+/* results from an async I/O request + it's ID. */
+typedef struct {
+ unsigned int reqID;
+ int len;
+ int errCode;
+} StgAsyncIOResult;
+#endif
+
typedef union {
StgClosure *closure;
struct StgTSO_ *tso;
int fd;
+#if defined(mingw32_TARGET_OS)
+ StgAsyncIOResult* async_result;
+#endif
unsigned int target;
} StgTSOBlockInfo;
StgTSOBlockInfo block_info;
struct StgTSO_* blocked_exceptions;
StgThreadID id;
-
+ int saved_errno;
+
StgTSOTickyInfo ticky;
StgTSOProfInfo prof;
StgTSOParInfo par;
StgWord stack_size; /* stack size in *words* */
StgWord max_stack_size; /* maximum stack size in *words* */
StgPtr sp;
- StgUpdateFrame* su;
- StgWord stack[0];
+ StgWord stack[FLEXIBLE_ARRAY];
} StgTSO;
/* -----------------------------------------------------------------------------
extern StgTSO dummy_tso;
#define TSO_STRUCT_SIZE \
- ((int)&(dummy_tso).stack - (int)&(dummy_tso).header)
+ ((char *)&dummy_tso.stack - (char *)&dummy_tso.header)
#define TSO_STRUCT_SIZEW (TSO_STRUCT_SIZE / sizeof(W_))