X-Git-Url: http://git.megacz.com/?p=ghc-hetmet.git;a=blobdiff_plain;f=rts%2FPrimOps.cmm;h=f2ce41551ad29ada1d30e518dc50bbdad0cc432e;hp=990d6f31d9a6c40a9d978157e2f9c8f824c03232;hb=2378b2325df64a5ccc5b2e038ac3dbb848dea5f7;hpb=93db1991b5cacf8357493a2e17fbbfb485f3205b diff --git a/rts/PrimOps.cmm b/rts/PrimOps.cmm index 990d6f3..f2ce415 100644 --- a/rts/PrimOps.cmm +++ b/rts/PrimOps.cmm @@ -27,6 +27,32 @@ #include "Cmm.h" +#ifdef __PIC__ +#ifndef mingw32_HOST_OS +import __gmpz_init; +import __gmpz_add; +import __gmpz_sub; +import __gmpz_mul; +import __gmpz_gcd; +import __gmpn_gcd_1; +import __gmpn_cmp; +import __gmpz_tdiv_q; +import __gmpz_tdiv_r; +import __gmpz_tdiv_qr; +import __gmpz_fdiv_qr; +import __gmpz_divexact; +import __gmpz_and; +import __gmpz_xor; +import __gmpz_ior; +import __gmpz_com; +#endif +import pthread_mutex_lock; +import pthread_mutex_unlock; +#endif +import base_ControlziExceptionziBase_nestedAtomically_closure; +import EnterCriticalSection; +import LeaveCriticalSection; + /*----------------------------------------------------------------------------- Array Primitives @@ -49,7 +75,7 @@ newByteArrayzh_fast n = R1; payload_words = ROUNDUP_BYTES_TO_WDS(n); words = BYTES_TO_WDS(SIZEOF_StgArrWords) + payload_words; - "ptr" p = foreign "C" allocateLocal(MyCapability() "ptr",words) []; + ("ptr" p) = foreign "C" allocateLocal(MyCapability() "ptr",words) []; TICK_ALLOC_PRIM(SIZEOF_StgArrWords,WDS(payload_words),0); SET_HDR(p, stg_ARR_WORDS_info, W_[CCCS]); StgArrWords_words(p) = payload_words; @@ -73,7 +99,7 @@ newPinnedByteArrayzh_fast words = words + 1; } - "ptr" p = foreign "C" allocatePinned(words) []; + ("ptr" p) = foreign "C" allocatePinned(words) []; TICK_ALLOC_PRIM(SIZEOF_StgArrWords,WDS(payload_words),0); // Again, if the ArrWords header isn't a multiple of 8 bytes, we @@ -97,7 +123,7 @@ newArrayzh_fast MAYBE_GC(R2_PTR,newArrayzh_fast); words = BYTES_TO_WDS(SIZEOF_StgMutArrPtrs) + n; - "ptr" arr = foreign "C" allocateLocal(MyCapability() "ptr",words) [R2]; + ("ptr" arr) = foreign "C" allocateLocal(MyCapability() "ptr",words) [R2]; TICK_ALLOC_PRIM(SIZEOF_StgMutArrPtrs, WDS(n), 0); SET_HDR(arr, stg_MUT_ARR_PTRS_DIRTY_info, W_[CCCS]); @@ -207,7 +233,7 @@ atomicModifyMutVarzh_fast HP_CHK_GEN_TICKY(SIZE, R1_PTR & R2_PTR, atomicModifyMutVarzh_fast); #if defined(THREADED_RTS) - foreign "C" ACQUIRE_LOCK(atomic_modify_mutvar_mutex "ptr") [R1,R2]; + ACQUIRE_LOCK(atomic_modify_mutvar_mutex "ptr") [R1,R2]; #endif x = StgMutVar_var(R1); @@ -238,7 +264,7 @@ atomicModifyMutVarzh_fast StgThunk_payload(r,0) = z; #if defined(THREADED_RTS) - foreign "C" RELEASE_LOCK(atomic_modify_mutvar_mutex "ptr") []; + RELEASE_LOCK(atomic_modify_mutvar_mutex "ptr") []; #endif RET_P(r); @@ -418,16 +444,19 @@ int64ToIntegerzh_fast /* arguments: L1 = Int64# */ L_ val; - W_ hi, s, neg, words_needed, p; + W_ hi, lo, s, neg, words_needed, p; val = L1; neg = 0; - if ( %ge(val,0x100000000::L_) || %le(val,-0x100000000::L_) ) { - words_needed = 2; - } else { + hi = TO_W_(val >> 32); + lo = TO_W_(val); + + if ( hi == 0 || (hi == 0xFFFFFFFF && lo != 0) ) { // minimum is one word words_needed = 1; + } else { + words_needed = 2; } ALLOC_PRIM( SIZEOF_StgArrWords + WDS(words_needed), @@ -437,21 +466,24 @@ int64ToIntegerzh_fast SET_HDR(p, stg_ARR_WORDS_info, W_[CCCS]); StgArrWords_words(p) = words_needed; - if ( %lt(val,0::L_) ) { + if ( %lt(hi,0) ) { neg = 1; - val = -val; + lo = -lo; + if(lo == 0) { + hi = -hi; + } else { + hi = -hi - 1; + } } - hi = TO_W_(val >> 32); - if ( words_needed == 2 ) { s = 2; - Hp(-1) = TO_W_(val); + Hp(-1) = lo; Hp(0) = hi; } else { - if ( val != 0::L_ ) { + if ( lo != 0 ) { s = 1; - Hp(0) = TO_W_(val); + Hp(0) = lo; } else /* val==0 */ { s = 0; } @@ -465,16 +497,18 @@ int64ToIntegerzh_fast */ RET_NP(s,p); } - word64ToIntegerzh_fast { /* arguments: L1 = Word64# */ L_ val; - W_ hi, s, words_needed, p; + W_ hi, lo, s, words_needed, p; val = L1; - if ( val >= 0x100000000::L_ ) { + hi = TO_W_(val >> 32); + lo = TO_W_(val); + + if ( hi != 0 ) { words_needed = 2; } else { words_needed = 1; @@ -487,15 +521,14 @@ word64ToIntegerzh_fast SET_HDR(p, stg_ARR_WORDS_info, W_[CCCS]); StgArrWords_words(p) = words_needed; - hi = TO_W_(val >> 32); - if ( val >= 0x100000000::L_ ) { + if ( hi != 0 ) { s = 2; - Hp(-1) = TO_W_(val); + Hp(-1) = lo; Hp(0) = hi; } else { - if ( val != 0::L_ ) { + if ( lo != 0 ) { s = 1; - Hp(0) = TO_W_(val); + Hp(0) = lo; } else /* val==0 */ { s = 0; } @@ -508,6 +541,7 @@ word64ToIntegerzh_fast } + #endif /* SUPPORT_LONG_LONGS */ /* ToDo: this is shockingly inefficient */ @@ -668,7 +702,7 @@ gcdIntzh_fast FETCH_MP_TEMP(mp_tmp_w); W_[mp_tmp_w] = R1; - r = foreign "C" __gmpn_gcd_1(mp_tmp_w "ptr", 1, R2) []; + (r) = foreign "C" __gmpn_gcd_1(mp_tmp_w "ptr", 1, R2) []; R1 = r; /* Result parked in R1, return via info-pointer at TOS */ @@ -679,7 +713,9 @@ gcdIntzh_fast gcdIntegerIntzh_fast { /* R1 = s1; R2 = d1; R3 = the int */ - R1 = foreign "C" __gmpn_gcd_1( BYTE_ARR_CTS(R2) "ptr", R1, R3) []; + W_ s1; + (s1) = foreign "C" __gmpn_gcd_1( BYTE_ARR_CTS(R2) "ptr", R1, R3) []; + R1 = s1; /* Result parked in R1, return via info-pointer at TOS */ jump %ENTRY_CODE(Sp(0)); @@ -760,7 +796,7 @@ cmpIntegerzh_fast up = BYTE_ARR_CTS(R2); vp = BYTE_ARR_CTS(R4); - cmp = foreign "C" __gmpn_cmp(up "ptr", vp "ptr", size) []; + (cmp) = foreign "C" __gmpn_cmp(up "ptr", vp "ptr", size) []; if (cmp == 0 :: CInt) { R1 = 0; @@ -840,6 +876,23 @@ decodeFloatzh_fast RET_NNP(W_[mp_tmp_w], TO_W_(MP_INT__mp_size(mp_tmp1)), p); } +decodeFloatzuIntzh_fast +{ + W_ p; + F_ arg; + FETCH_MP_TEMP(mp_tmp1); + FETCH_MP_TEMP(mp_tmp_w); + + /* arguments: F1 = Float# */ + arg = F1; + + /* Perform the operation */ + foreign "C" __decodeFloat_Int(mp_tmp1 "ptr", mp_tmp_w "ptr", arg) []; + + /* returns: (Int# (mantissa), Int# (exponent)) */ + RET_NN(W_[mp_tmp1], W_[mp_tmp_w]); +} + #define DOUBLE_MANTISSA_SIZE SIZEOF_DOUBLE #define ARR_SIZE (SIZEOF_StgArrWords + DOUBLE_MANTISSA_SIZE) @@ -869,6 +922,28 @@ decodeDoublezh_fast RET_NNP(W_[mp_tmp_w], TO_W_(MP_INT__mp_size(mp_tmp1)), p); } +decodeDoublezu2Intzh_fast +{ + D_ arg; + W_ p; + FETCH_MP_TEMP(mp_tmp1); + FETCH_MP_TEMP(mp_tmp2); + FETCH_MP_TEMP(mp_result1); + FETCH_MP_TEMP(mp_result2); + + /* arguments: D1 = Double# */ + arg = D1; + + /* Perform the operation */ + foreign "C" __decodeDouble_2Int(mp_tmp1 "ptr", mp_tmp2 "ptr", + mp_result1 "ptr", mp_result2 "ptr", + arg) []; + + /* returns: + (Int# (mant sign), Word# (mant high), Word# (mant low), Int# (expn)) */ + RET_NNNN(W_[mp_tmp1], W_[mp_tmp2], W_[mp_result1], W_[mp_result2]); +} + /* ----------------------------------------------------------------------------- * Concurrency primitives * -------------------------------------------------------------------------- */ @@ -883,9 +958,15 @@ forkzh_fast W_ threadid; closure = R1; - "ptr" threadid = foreign "C" createIOThread( MyCapability() "ptr", + ("ptr" threadid) = foreign "C" createIOThread( MyCapability() "ptr", RtsFlags_GcFlags_initialStkSize(RtsFlags), closure "ptr") []; + + /* start blocked if the current thread is blocked */ + StgTSO_flags(threadid) = + StgTSO_flags(threadid) | (StgTSO_flags(CurrentTSO) & + (TSO_BLOCKEX::I32 | TSO_INTERRUPTIBLE::I32)); + foreign "C" scheduleThread(MyCapability() "ptr", threadid "ptr") []; // switch at the earliest opportunity @@ -906,9 +987,15 @@ forkOnzh_fast cpu = R1; closure = R2; - "ptr" threadid = foreign "C" createIOThread( MyCapability() "ptr", + ("ptr" threadid) = foreign "C" createIOThread( MyCapability() "ptr", RtsFlags_GcFlags_initialStkSize(RtsFlags), closure "ptr") []; + + /* start blocked if the current thread is blocked */ + StgTSO_flags(threadid) = + StgTSO_flags(threadid) | (StgTSO_flags(CurrentTSO) & + (TSO_BLOCKEX::I32 | TSO_INTERRUPTIBLE::I32)); + foreign "C" scheduleThreadOn(MyCapability() "ptr", cpu, threadid "ptr") []; // switch at the earliest opportunity @@ -943,181 +1030,166 @@ isCurrentThreadBoundzh_fast { /* no args */ W_ r; - r = foreign "C" isThreadBound(CurrentTSO) []; + (r) = foreign "C" isThreadBound(CurrentTSO) []; RET_N(r); } +threadStatuszh_fast +{ + /* args: R1 :: ThreadId# */ + W_ tso; + W_ why_blocked; + W_ what_next; + W_ ret; + + tso = R1; + loop: + if (TO_W_(StgTSO_what_next(tso)) == ThreadRelocated) { + tso = StgTSO__link(tso); + goto loop; + } + + what_next = TO_W_(StgTSO_what_next(tso)); + why_blocked = TO_W_(StgTSO_why_blocked(tso)); + // Note: these two reads are not atomic, so they might end up + // being inconsistent. It doesn't matter, since we + // only return one or the other. If we wanted to return the + // contents of block_info too, then we'd have to do some synchronisation. + + if (what_next == ThreadComplete) { + ret = 16; // NB. magic, matches up with GHC.Conc.threadStatus + } else { + if (what_next == ThreadKilled) { + ret = 17; + } else { + ret = why_blocked; + } + } + RET_N(ret); +} /* ----------------------------------------------------------------------------- * TVar primitives * -------------------------------------------------------------------------- */ -#ifdef REG_R1 #define SP_OFF 0 -#define IF_NOT_REG_R1(x) -#else -#define SP_OFF 1 -#define IF_NOT_REG_R1(x) x -#endif // Catch retry frame ------------------------------------------------------------ -#define CATCH_RETRY_FRAME_ERROR(label) \ - label { foreign "C" barf("catch_retry_frame incorrectly entered!"); } - -CATCH_RETRY_FRAME_ERROR(stg_catch_retry_frame_0_ret) -CATCH_RETRY_FRAME_ERROR(stg_catch_retry_frame_1_ret) -CATCH_RETRY_FRAME_ERROR(stg_catch_retry_frame_2_ret) -CATCH_RETRY_FRAME_ERROR(stg_catch_retry_frame_3_ret) -CATCH_RETRY_FRAME_ERROR(stg_catch_retry_frame_4_ret) -CATCH_RETRY_FRAME_ERROR(stg_catch_retry_frame_5_ret) -CATCH_RETRY_FRAME_ERROR(stg_catch_retry_frame_6_ret) -CATCH_RETRY_FRAME_ERROR(stg_catch_retry_frame_7_ret) - -#if MAX_VECTORED_RTN > 8 -#error MAX_VECTORED_RTN has changed: please modify stg_catch_retry_frame too. -#endif - +INFO_TABLE_RET(stg_catch_retry_frame, CATCH_RETRY_FRAME, #if defined(PROFILING) -#define CATCH_RETRY_FRAME_BITMAP 7 -#define CATCH_RETRY_FRAME_WORDS 6 -#else -#define CATCH_RETRY_FRAME_BITMAP 1 -#define CATCH_RETRY_FRAME_WORDS 4 + W_ unused1, W_ unused2, #endif - -INFO_TABLE_RET(stg_catch_retry_frame, - CATCH_RETRY_FRAME_WORDS, CATCH_RETRY_FRAME_BITMAP, - CATCH_RETRY_FRAME, - stg_catch_retry_frame_0_ret, - stg_catch_retry_frame_1_ret, - stg_catch_retry_frame_2_ret, - stg_catch_retry_frame_3_ret, - stg_catch_retry_frame_4_ret, - stg_catch_retry_frame_5_ret, - stg_catch_retry_frame_6_ret, - stg_catch_retry_frame_7_ret) + W_ unused3, "ptr" W_ unused4, "ptr" W_ unused5) { W_ r, frame, trec, outer; - IF_NOT_REG_R1(W_ rval; rval = Sp(0); Sp_adj(1); ) frame = Sp; trec = StgTSO_trec(CurrentTSO); - "ptr" outer = foreign "C" stmGetEnclosingTRec(trec "ptr") []; - r = foreign "C" stmCommitNestedTransaction(MyCapability() "ptr", trec "ptr") []; + ("ptr" outer) = foreign "C" stmGetEnclosingTRec(trec "ptr") []; + (r) = foreign "C" stmCommitNestedTransaction(MyCapability() "ptr", trec "ptr") []; if (r != 0) { /* Succeeded (either first branch or second branch) */ StgTSO_trec(CurrentTSO) = outer; Sp = Sp + SIZEOF_StgCatchRetryFrame; - IF_NOT_REG_R1(Sp_adj(-1); Sp(0) = rval;) jump %ENTRY_CODE(Sp(SP_OFF)); } else { - /* Did not commit: retry */ + /* Did not commit: re-execute */ W_ new_trec; - "ptr" new_trec = foreign "C" stmStartTransaction(MyCapability() "ptr", outer "ptr") []; + ("ptr" new_trec) = foreign "C" stmStartTransaction(MyCapability() "ptr", outer "ptr") []; StgTSO_trec(CurrentTSO) = new_trec; if (StgCatchRetryFrame_running_alt_code(frame) != 0::I32) { R1 = StgCatchRetryFrame_alt_code(frame); } else { R1 = StgCatchRetryFrame_first_code(frame); - StgCatchRetryFrame_first_code_trec(frame) = new_trec; } jump stg_ap_v_fast; } } -// Atomically frame ------------------------------------------------------------- - - -#define ATOMICALLY_FRAME_ERROR(label) \ - label { foreign "C" barf("atomically_frame incorrectly entered!"); } - -ATOMICALLY_FRAME_ERROR(stg_atomically_frame_0_ret) -ATOMICALLY_FRAME_ERROR(stg_atomically_frame_1_ret) -ATOMICALLY_FRAME_ERROR(stg_atomically_frame_2_ret) -ATOMICALLY_FRAME_ERROR(stg_atomically_frame_3_ret) -ATOMICALLY_FRAME_ERROR(stg_atomically_frame_4_ret) -ATOMICALLY_FRAME_ERROR(stg_atomically_frame_5_ret) -ATOMICALLY_FRAME_ERROR(stg_atomically_frame_6_ret) -ATOMICALLY_FRAME_ERROR(stg_atomically_frame_7_ret) - -#if MAX_VECTORED_RTN > 8 -#error MAX_VECTORED_RTN has changed: please modify stg_atomically_frame too. -#endif +// Atomically frame ------------------------------------------------------------ +INFO_TABLE_RET(stg_atomically_frame, ATOMICALLY_FRAME, #if defined(PROFILING) -#define ATOMICALLY_FRAME_BITMAP 3 -#define ATOMICALLY_FRAME_WORDS 3 -#else -#define ATOMICALLY_FRAME_BITMAP 0 -#define ATOMICALLY_FRAME_WORDS 1 + W_ unused1, W_ unused2, #endif - - -INFO_TABLE_RET(stg_atomically_frame, - ATOMICALLY_FRAME_WORDS, ATOMICALLY_FRAME_BITMAP, - ATOMICALLY_FRAME, - stg_atomically_frame_0_ret, - stg_atomically_frame_1_ret, - stg_atomically_frame_2_ret, - stg_atomically_frame_3_ret, - stg_atomically_frame_4_ret, - stg_atomically_frame_5_ret, - stg_atomically_frame_6_ret, - stg_atomically_frame_7_ret) + "ptr" W_ unused3, "ptr" W_ unused4) { - W_ frame, trec, valid; - IF_NOT_REG_R1(W_ rval; rval = Sp(0); Sp_adj(1); ) + W_ frame, trec, valid, next_invariant, q, outer; frame = Sp; trec = StgTSO_trec(CurrentTSO); + ("ptr" outer) = foreign "C" stmGetEnclosingTRec(trec "ptr") []; + + if (outer == NO_TREC) { + /* First time back at the atomically frame -- pick up invariants */ + ("ptr" q) = foreign "C" stmGetInvariantsToCheck(MyCapability() "ptr", trec "ptr") []; + StgAtomicallyFrame_next_invariant_to_check(frame) = q; - /* The TSO is not currently waiting: try to commit the transaction */ - valid = foreign "C" stmCommitTransaction(MyCapability() "ptr", trec "ptr") []; - if (valid != 0) { - /* Transaction was valid: commit succeeded */ - StgTSO_trec(CurrentTSO) = NO_TREC; - Sp = Sp + SIZEOF_StgAtomicallyFrame; - IF_NOT_REG_R1(Sp_adj(-1); Sp(0) = rval;) - jump %ENTRY_CODE(Sp(SP_OFF)); } else { - /* Transaction was not valid: try again */ - "ptr" trec = foreign "C" stmStartTransaction(MyCapability() "ptr", NO_TREC "ptr") []; + /* Second/subsequent time back at the atomically frame -- abort the + * tx that's checking the invariant and move on to the next one */ + StgTSO_trec(CurrentTSO) = outer; + q = StgAtomicallyFrame_next_invariant_to_check(frame); + StgInvariantCheckQueue_my_execution(q) = trec; + foreign "C" stmAbortTransaction(MyCapability() "ptr", trec "ptr") []; + /* Don't free trec -- it's linked from q and will be stashed in the + * invariant if we eventually commit. */ + q = StgInvariantCheckQueue_next_queue_entry(q); + StgAtomicallyFrame_next_invariant_to_check(frame) = q; + trec = outer; + } + + q = StgAtomicallyFrame_next_invariant_to_check(frame); + + if (q != END_INVARIANT_CHECK_QUEUE) { + /* We can't commit yet: another invariant to check */ + ("ptr" trec) = foreign "C" stmStartTransaction(MyCapability() "ptr", trec "ptr") []; StgTSO_trec(CurrentTSO) = trec; - R1 = StgAtomicallyFrame_code(frame); + + next_invariant = StgInvariantCheckQueue_invariant(q); + R1 = StgAtomicInvariant_code(next_invariant); jump stg_ap_v_fast; + + } else { + + /* We've got no more invariants to check, try to commit */ + (valid) = foreign "C" stmCommitTransaction(MyCapability() "ptr", trec "ptr") []; + if (valid != 0) { + /* Transaction was valid: commit succeeded */ + StgTSO_trec(CurrentTSO) = NO_TREC; + Sp = Sp + SIZEOF_StgAtomicallyFrame; + jump %ENTRY_CODE(Sp(SP_OFF)); + } else { + /* Transaction was not valid: try again */ + ("ptr" trec) = foreign "C" stmStartTransaction(MyCapability() "ptr", NO_TREC "ptr") []; + StgTSO_trec(CurrentTSO) = trec; + StgAtomicallyFrame_next_invariant_to_check(frame) = END_INVARIANT_CHECK_QUEUE; + R1 = StgAtomicallyFrame_code(frame); + jump stg_ap_v_fast; + } } } -INFO_TABLE_RET(stg_atomically_waiting_frame, - ATOMICALLY_FRAME_WORDS, ATOMICALLY_FRAME_BITMAP, - ATOMICALLY_FRAME, - stg_atomically_frame_0_ret, - stg_atomically_frame_1_ret, - stg_atomically_frame_2_ret, - stg_atomically_frame_3_ret, - stg_atomically_frame_4_ret, - stg_atomically_frame_5_ret, - stg_atomically_frame_6_ret, - stg_atomically_frame_7_ret) +INFO_TABLE_RET(stg_atomically_waiting_frame, ATOMICALLY_FRAME, +#if defined(PROFILING) + W_ unused1, W_ unused2, +#endif + "ptr" W_ unused3, "ptr" W_ unused4) { W_ frame, trec, valid; - IF_NOT_REG_R1(W_ rval; rval = Sp(0); Sp_adj(1); ) frame = Sp; /* The TSO is currently waiting: should we stop waiting? */ - valid = foreign "C" stmReWait(MyCapability() "ptr", CurrentTSO "ptr") []; + (valid) = foreign "C" stmReWait(MyCapability() "ptr", CurrentTSO "ptr") []; if (valid != 0) { /* Previous attempt is still valid: no point trying again yet */ - IF_NOT_REG_R1(Sp_adj(-2); - Sp(1) = stg_NO_FINALIZER_closure; - Sp(0) = stg_ut_1_0_unreg_info;) jump stg_block_noregs; } else { /* Previous attempt is no longer valid: try again */ - "ptr" trec = foreign "C" stmStartTransaction(MyCapability() "ptr", NO_TREC "ptr") []; + ("ptr" trec) = foreign "C" stmStartTransaction(MyCapability() "ptr", NO_TREC "ptr") []; StgTSO_trec(CurrentTSO) = trec; StgHeader_info(frame) = stg_atomically_frame_info; R1 = StgAtomicallyFrame_code(frame); @@ -1127,59 +1199,38 @@ INFO_TABLE_RET(stg_atomically_waiting_frame, // STM catch frame -------------------------------------------------------------- -#define CATCH_STM_FRAME_ENTRY_TEMPLATE(label,ret) \ - label \ - { \ - IF_NOT_REG_R1(W_ rval; rval = Sp(0); Sp_adj(1); ) \ - Sp = Sp + SIZEOF_StgCatchSTMFrame; \ - IF_NOT_REG_R1(Sp_adj(-1); Sp(0) = rval;) \ - jump ret; \ - } - -#ifdef REG_R1 #define SP_OFF 0 -#else -#define SP_OFF 1 -#endif - -CATCH_STM_FRAME_ENTRY_TEMPLATE(stg_catch_stm_frame_0_ret,%RET_VEC(Sp(SP_OFF),0)) -CATCH_STM_FRAME_ENTRY_TEMPLATE(stg_catch_stm_frame_1_ret,%RET_VEC(Sp(SP_OFF),1)) -CATCH_STM_FRAME_ENTRY_TEMPLATE(stg_catch_stm_frame_2_ret,%RET_VEC(Sp(SP_OFF),2)) -CATCH_STM_FRAME_ENTRY_TEMPLATE(stg_catch_stm_frame_3_ret,%RET_VEC(Sp(SP_OFF),3)) -CATCH_STM_FRAME_ENTRY_TEMPLATE(stg_catch_stm_frame_4_ret,%RET_VEC(Sp(SP_OFF),4)) -CATCH_STM_FRAME_ENTRY_TEMPLATE(stg_catch_stm_frame_5_ret,%RET_VEC(Sp(SP_OFF),5)) -CATCH_STM_FRAME_ENTRY_TEMPLATE(stg_catch_stm_frame_6_ret,%RET_VEC(Sp(SP_OFF),6)) -CATCH_STM_FRAME_ENTRY_TEMPLATE(stg_catch_stm_frame_7_ret,%RET_VEC(Sp(SP_OFF),7)) - -#if MAX_VECTORED_RTN > 8 -#error MAX_VECTORED_RTN has changed: please modify stg_catch_stm_frame too. -#endif - -#if defined(PROFILING) -#define CATCH_STM_FRAME_BITMAP 3 -#define CATCH_STM_FRAME_WORDS 3 -#else -#define CATCH_STM_FRAME_BITMAP 0 -#define CATCH_STM_FRAME_WORDS 1 -#endif /* Catch frames are very similar to update frames, but when entering * one we just pop the frame off the stack and perform the correct * kind of return to the activation record underneath us on the stack. */ -INFO_TABLE_RET(stg_catch_stm_frame, - CATCH_STM_FRAME_WORDS, CATCH_STM_FRAME_BITMAP, - CATCH_STM_FRAME, - stg_catch_stm_frame_0_ret, - stg_catch_stm_frame_1_ret, - stg_catch_stm_frame_2_ret, - stg_catch_stm_frame_3_ret, - stg_catch_stm_frame_4_ret, - stg_catch_stm_frame_5_ret, - stg_catch_stm_frame_6_ret, - stg_catch_stm_frame_7_ret) -CATCH_STM_FRAME_ENTRY_TEMPLATE(,%ENTRY_CODE(Sp(SP_OFF))) +INFO_TABLE_RET(stg_catch_stm_frame, CATCH_STM_FRAME, +#if defined(PROFILING) + W_ unused1, W_ unused2, +#endif + "ptr" W_ unused3, "ptr" W_ unused4) + { + W_ r, frame, trec, outer; + frame = Sp; + trec = StgTSO_trec(CurrentTSO); + ("ptr" outer) = foreign "C" stmGetEnclosingTRec(trec "ptr") []; + (r) = foreign "C" stmCommitNestedTransaction(MyCapability() "ptr", trec "ptr") []; + if (r != 0) { + /* Commit succeeded */ + StgTSO_trec(CurrentTSO) = outer; + Sp = Sp + SIZEOF_StgCatchSTMFrame; + jump Sp(SP_OFF); + } else { + /* Commit failed */ + W_ new_trec; + ("ptr" new_trec) = foreign "C" stmStartTransaction(MyCapability() "ptr", outer "ptr") []; + StgTSO_trec(CurrentTSO) = new_trec; + R1 = StgCatchSTMFrame_code(frame); + jump stg_ap_v_fast; + } + } // Primop definition ------------------------------------------------------------ @@ -1200,7 +1251,7 @@ atomicallyzh_fast /* Nested transactions are not allowed; raise an exception */ if (old_trec != NO_TREC) { - R1 = base_GHCziIOBase_NestedAtomically_closure; + R1 = base_ControlziExceptionziBase_nestedAtomically_closure; jump raisezh_fast; } @@ -1210,9 +1261,10 @@ atomicallyzh_fast SET_HDR(frame,stg_atomically_frame_info, W_[CCCS]); StgAtomicallyFrame_code(frame) = R1; + StgAtomicallyFrame_next_invariant_to_check(frame) = END_INVARIANT_CHECK_QUEUE; /* Start the memory transcation */ - "ptr" new_trec = foreign "C" stmStartTransaction(MyCapability() "ptr", old_trec "ptr") [R1]; + ("ptr" new_trec) = foreign "C" stmStartTransaction(MyCapability() "ptr", old_trec "ptr") [R1]; StgTSO_trec(CurrentTSO) = new_trec; /* Apply R1 to the realworld token */ @@ -1234,6 +1286,14 @@ catchSTMzh_fast SET_HDR(frame, stg_catch_stm_frame_info, W_[CCCS]); StgCatchSTMFrame_handler(frame) = R2; + StgCatchSTMFrame_code(frame) = R1; + + /* Start a nested transaction to run the body of the try block in */ + W_ cur_trec; + W_ new_trec; + cur_trec = StgTSO_trec(CurrentTSO); + ("ptr" new_trec) = foreign "C" stmStartTransaction(MyCapability() "ptr", cur_trec "ptr"); + StgTSO_trec(CurrentTSO) = new_trec; /* Apply R1 to the realworld token */ jump stg_ap_v_fast; @@ -1255,7 +1315,7 @@ catchRetryzh_fast /* Start a nested transaction within which to run the first code */ trec = StgTSO_trec(CurrentTSO); - "ptr" new_trec = foreign "C" stmStartTransaction(MyCapability() "ptr", trec "ptr") [R1,R2]; + ("ptr" new_trec) = foreign "C" stmStartTransaction(MyCapability() "ptr", trec "ptr") [R1,R2]; StgTSO_trec(CurrentTSO) = new_trec; /* Set up the catch-retry frame */ @@ -1266,7 +1326,6 @@ catchRetryzh_fast StgCatchRetryFrame_running_alt_code(frame) = 0 :: CInt; // false; StgCatchRetryFrame_first_code(frame) = R1; StgCatchRetryFrame_alt_code(frame) = R2; - StgCatchRetryFrame_first_code_trec(frame) = new_trec; /* Apply R1 to the realworld token */ jump stg_ap_v_fast; @@ -1285,68 +1344,59 @@ retryzh_fast // Find the enclosing ATOMICALLY_FRAME or CATCH_RETRY_FRAME retry_pop_stack: - trec = StgTSO_trec(CurrentTSO); - "ptr" outer = foreign "C" stmGetEnclosingTRec(trec "ptr") []; StgTSO_sp(CurrentTSO) = Sp; - frame_type = foreign "C" findRetryFrameHelper(CurrentTSO "ptr") []; + (frame_type) = foreign "C" findRetryFrameHelper(CurrentTSO "ptr") []; Sp = StgTSO_sp(CurrentTSO); frame = Sp; + trec = StgTSO_trec(CurrentTSO); + ("ptr" outer) = foreign "C" stmGetEnclosingTRec(trec "ptr") []; if (frame_type == CATCH_RETRY_FRAME) { // The retry reaches a CATCH_RETRY_FRAME before the atomic frame ASSERT(outer != NO_TREC); + // Abort the transaction attempting the current branch + foreign "C" stmAbortTransaction(MyCapability() "ptr", trec "ptr") []; + foreign "C" stmFreeAbortedTRec(MyCapability() "ptr", trec "ptr") []; if (!StgCatchRetryFrame_running_alt_code(frame) != 0::I32) { - // Retry in the first code: try the alternative - "ptr" trec = foreign "C" stmStartTransaction(MyCapability() "ptr", outer "ptr") []; + // Retry in the first branch: try the alternative + ("ptr" trec) = foreign "C" stmStartTransaction(MyCapability() "ptr", outer "ptr") []; StgTSO_trec(CurrentTSO) = trec; StgCatchRetryFrame_running_alt_code(frame) = 1 :: CInt; // true; R1 = StgCatchRetryFrame_alt_code(frame); jump stg_ap_v_fast; } else { - // Retry in the alternative code: propagate - W_ other_trec; - other_trec = StgCatchRetryFrame_first_code_trec(frame); - r = foreign "C" stmCommitNestedTransaction(MyCapability() "ptr", other_trec "ptr") []; - if (r != 0) { - r = foreign "C" stmCommitNestedTransaction(MyCapability() "ptr", trec "ptr") []; - } else { - foreign "C" stmAbortTransaction(MyCapability() "ptr", trec "ptr") []; - } - if (r != 0) { - // Merge between siblings succeeded: commit it back to enclosing transaction - // and then propagate the retry - StgTSO_trec(CurrentTSO) = outer; - Sp = Sp + SIZEOF_StgCatchRetryFrame; - goto retry_pop_stack; - } else { - // Merge failed: we musn't propagate the retry. Try both paths again. - "ptr" trec = foreign "C" stmStartTransaction(MyCapability() "ptr", outer "ptr") []; - StgCatchRetryFrame_first_code_trec(frame) = trec; - StgCatchRetryFrame_running_alt_code(frame) = 0 :: CInt; // false; - StgTSO_trec(CurrentTSO) = trec; - R1 = StgCatchRetryFrame_first_code(frame); - jump stg_ap_v_fast; - } + // Retry in the alternative code: propagate the retry + StgTSO_trec(CurrentTSO) = outer; + Sp = Sp + SIZEOF_StgCatchRetryFrame; + goto retry_pop_stack; } } // We've reached the ATOMICALLY_FRAME: attempt to wait ASSERT(frame_type == ATOMICALLY_FRAME); + if (outer != NO_TREC) { + // We called retry while checking invariants, so abort the current + // invariant check (merging its TVar accesses into the parents read + // set so we'll wait on them) + foreign "C" stmAbortTransaction(MyCapability() "ptr", trec "ptr") []; + foreign "C" stmFreeAbortedTRec(MyCapability() "ptr", trec "ptr") []; + trec = outer; + StgTSO_trec(CurrentTSO) = trec; + ("ptr" outer) = foreign "C" stmGetEnclosingTRec(trec "ptr") []; + } ASSERT(outer == NO_TREC); - r = foreign "C" stmWait(MyCapability() "ptr", CurrentTSO "ptr", trec "ptr") []; + + (r) = foreign "C" stmWait(MyCapability() "ptr", CurrentTSO "ptr", trec "ptr") []; if (r != 0) { // Transaction was valid: stmWait put us on the TVars' queues, we now block StgHeader_info(frame) = stg_atomically_waiting_frame_info; Sp = frame; // Fix up the stack in the unregisterised case: the return convention is different. - IF_NOT_REG_R1(Sp_adj(-2); - Sp(1) = stg_NO_FINALIZER_closure; - Sp(0) = stg_ut_1_0_unreg_info;) R3 = trec; // passing to stmWaitUnblock() jump stg_block_stmwait; } else { // Transaction was not valid: retry immediately - "ptr" trec = foreign "C" stmStartTransaction(MyCapability() "ptr", outer "ptr") []; + ("ptr" trec) = foreign "C" stmStartTransaction(MyCapability() "ptr", outer "ptr") []; StgTSO_trec(CurrentTSO) = trec; R1 = StgAtomicallyFrame_code(frame); Sp = frame; @@ -1355,6 +1405,23 @@ retry_pop_stack: } +checkzh_fast +{ + W_ trec, closure; + + /* Args: R1 = invariant closure */ + MAYBE_GC (R1_PTR, checkzh_fast); + + trec = StgTSO_trec(CurrentTSO); + closure = R1; + foreign "C" stmAddInvariantToCheck(MyCapability() "ptr", + trec "ptr", + closure "ptr") []; + + jump %ENTRY_CODE(Sp(0)); +} + + newTVarzh_fast { W_ tv; @@ -1364,7 +1431,7 @@ newTVarzh_fast MAYBE_GC (R1_PTR, newTVarzh_fast); new_value = R1; - "ptr" tv = foreign "C" stmNewTVar(MyCapability() "ptr", new_value "ptr") []; + ("ptr" tv) = foreign "C" stmNewTVar(MyCapability() "ptr", new_value "ptr") []; RET_P(tv); } @@ -1380,7 +1447,7 @@ readTVarzh_fast MAYBE_GC (R1_PTR, readTVarzh_fast); // Call to stmReadTVar may allocate trec = StgTSO_trec(CurrentTSO); tvar = R1; - "ptr" result = foreign "C" stmReadTVar(MyCapability() "ptr", trec "ptr", tvar "ptr") []; + ("ptr" result) = foreign "C" stmReadTVar(MyCapability() "ptr", trec "ptr", tvar "ptr") []; RET_P(result); } @@ -1441,7 +1508,7 @@ isEmptyMVarzh_fast { /* args: R1 = MVar closure */ - if (GET_INFO(R1) == stg_EMPTY_MVAR_info) { + if (StgMVar_value(R1) == stg_END_TSO_QUEUE_closure) { RET_N(1); } else { RET_N(0); @@ -1456,7 +1523,8 @@ newMVarzh_fast ALLOC_PRIM ( SIZEOF_StgMVar, NO_PTRS, newMVarzh_fast ); mvar = Hp - SIZEOF_StgMVar + WDS(1); - SET_HDR(mvar,stg_EMPTY_MVAR_info,W_[CCCS]); + SET_HDR(mvar,stg_MVAR_DIRTY_info,W_[CCCS]); + // MVARs start dirty: generation 0 has no mutable list StgMVar_head(mvar) = stg_END_TSO_QUEUE_closure; StgMVar_tail(mvar) = stg_END_TSO_QUEUE_closure; StgMVar_value(mvar) = stg_END_TSO_QUEUE_closure; @@ -1464,16 +1532,9 @@ newMVarzh_fast } -/* If R1 isn't available, pass it on the stack */ -#ifdef REG_R1 #define PerformTake(tso, value) \ W_[StgTSO_sp(tso) + WDS(1)] = value; \ W_[StgTSO_sp(tso) + WDS(0)] = stg_gc_unpt_r1_info; -#else -#define PerformTake(tso, value) \ - W_[StgTSO_sp(tso) + WDS(1)] = value; \ - W_[StgTSO_sp(tso) + WDS(0)] = stg_ut_1_0_unreg_info; -#endif #define PerformPut(tso,lval) \ StgTSO_sp(tso) = StgTSO_sp(tso) + WDS(3); \ @@ -1487,25 +1548,32 @@ takeMVarzh_fast mvar = R1; #if defined(THREADED_RTS) - "ptr" info = foreign "C" lockClosure(mvar "ptr") []; + ("ptr" info) = foreign "C" lockClosure(mvar "ptr") []; #else info = GET_INFO(mvar); #endif + + if (info == stg_MVAR_CLEAN_info) { + foreign "C" dirty_MVAR(BaseReg "ptr", mvar "ptr") []; + } /* If the MVar is empty, put ourselves on its blocking queue, * and wait until we're woken up. */ - if (info == stg_EMPTY_MVAR_info) { + if (StgMVar_value(mvar) == stg_END_TSO_QUEUE_closure) { if (StgMVar_head(mvar) == stg_END_TSO_QUEUE_closure) { StgMVar_head(mvar) = CurrentTSO; } else { - StgTSO_link(StgMVar_tail(mvar)) = CurrentTSO; + foreign "C" setTSOLink(MyCapability() "ptr", + StgMVar_tail(mvar) "ptr", + CurrentTSO) []; } - StgTSO_link(CurrentTSO) = stg_END_TSO_QUEUE_closure; + StgTSO__link(CurrentTSO) = stg_END_TSO_QUEUE_closure; StgTSO_why_blocked(CurrentTSO) = BlockedOnMVar::I16; StgTSO_block_info(CurrentTSO) = mvar; StgMVar_tail(mvar) = CurrentTSO; + R1 = mvar; jump stg_block_takemvar; } @@ -1522,24 +1590,23 @@ takeMVarzh_fast /* actually perform the putMVar for the thread that we just woke up */ tso = StgMVar_head(mvar); PerformPut(tso,StgMVar_value(mvar)); - dirtyTSO(tso); -#if defined(GRAN) || defined(PAR) - /* ToDo: check 2nd arg (mvar) is right */ - "ptr" tso = foreign "C" unblockOne(StgMVar_head(mvar),mvar) []; - StgMVar_head(mvar) = tso; -#else - "ptr" tso = foreign "C" unblockOne(MyCapability() "ptr", - StgMVar_head(mvar) "ptr") []; + if (TO_W_(StgTSO_flags(tso)) & TSO_DIRTY == 0) { + foreign "C" dirty_TSO(MyCapability() "ptr", tso "ptr") []; + } + + ("ptr" tso) = foreign "C" unblockOne_(MyCapability() "ptr", + StgMVar_head(mvar) "ptr", 1) []; StgMVar_head(mvar) = tso; -#endif if (StgMVar_head(mvar) == stg_END_TSO_QUEUE_closure) { StgMVar_tail(mvar) = stg_END_TSO_QUEUE_closure; } #if defined(THREADED_RTS) - foreign "C" unlockClosure(mvar "ptr", stg_FULL_MVAR_info) []; + unlockClosure(mvar, stg_MVAR_DIRTY_info); +#else + SET_INFO(mvar,stg_MVAR_DIRTY_info); #endif RET_P(val); } @@ -1549,9 +1616,9 @@ takeMVarzh_fast StgMVar_value(mvar) = stg_END_TSO_QUEUE_closure; #if defined(THREADED_RTS) - foreign "C" unlockClosure(mvar "ptr", stg_EMPTY_MVAR_info) []; + unlockClosure(mvar, stg_MVAR_DIRTY_info); #else - SET_INFO(mvar,stg_EMPTY_MVAR_info); + SET_INFO(mvar,stg_MVAR_DIRTY_info); #endif RET_P(val); @@ -1568,14 +1635,14 @@ tryTakeMVarzh_fast mvar = R1; #if defined(THREADED_RTS) - "ptr" info = foreign "C" lockClosure(mvar "ptr") []; + ("ptr" info) = foreign "C" lockClosure(mvar "ptr") []; #else info = GET_INFO(mvar); #endif - if (info == stg_EMPTY_MVAR_info) { + if (StgMVar_value(mvar) == stg_END_TSO_QUEUE_closure) { #if defined(THREADED_RTS) - foreign "C" unlockClosure(mvar "ptr", stg_EMPTY_MVAR_info) []; + unlockClosure(mvar, info); #endif /* HACK: we need a pointer to pass back, * so we abuse NO_FINALIZER_closure @@ -1583,6 +1650,10 @@ tryTakeMVarzh_fast RET_NP(0, stg_NO_FINALIZER_closure); } + if (info == stg_MVAR_CLEAN_info) { + foreign "C" dirty_MVAR(BaseReg "ptr", mvar "ptr"); + } + /* we got the value... */ val = StgMVar_value(mvar); @@ -1596,23 +1667,21 @@ tryTakeMVarzh_fast /* actually perform the putMVar for the thread that we just woke up */ tso = StgMVar_head(mvar); PerformPut(tso,StgMVar_value(mvar)); - dirtyTSO(tso); + if (TO_W_(StgTSO_flags(tso)) & TSO_DIRTY == 0) { + foreign "C" dirty_TSO(MyCapability() "ptr", tso "ptr") []; + } -#if defined(GRAN) || defined(PAR) - /* ToDo: check 2nd arg (mvar) is right */ - "ptr" tso = foreign "C" unblockOne(StgMVar_head(mvar) "ptr", mvar "ptr") []; - StgMVar_head(mvar) = tso; -#else - "ptr" tso = foreign "C" unblockOne(MyCapability() "ptr", - StgMVar_head(mvar) "ptr") []; + ("ptr" tso) = foreign "C" unblockOne_(MyCapability() "ptr", + StgMVar_head(mvar) "ptr", 1) []; StgMVar_head(mvar) = tso; -#endif if (StgMVar_head(mvar) == stg_END_TSO_QUEUE_closure) { StgMVar_tail(mvar) = stg_END_TSO_QUEUE_closure; } #if defined(THREADED_RTS) - foreign "C" unlockClosure(mvar "ptr", stg_FULL_MVAR_info) []; + unlockClosure(mvar, stg_MVAR_DIRTY_info); +#else + SET_INFO(mvar,stg_MVAR_DIRTY_info); #endif } else @@ -1620,9 +1689,9 @@ tryTakeMVarzh_fast /* No further putMVars, MVar is now empty */ StgMVar_value(mvar) = stg_END_TSO_QUEUE_closure; #if defined(THREADED_RTS) - foreign "C" unlockClosure(mvar "ptr", stg_EMPTY_MVAR_info) []; + unlockClosure(mvar, stg_MVAR_DIRTY_info); #else - SET_INFO(mvar,stg_EMPTY_MVAR_info); + SET_INFO(mvar,stg_MVAR_DIRTY_info); #endif } @@ -1632,28 +1701,37 @@ tryTakeMVarzh_fast putMVarzh_fast { - W_ mvar, info, tso; + W_ mvar, val, info, tso; /* args: R1 = MVar, R2 = value */ mvar = R1; + val = R2; #if defined(THREADED_RTS) - "ptr" info = foreign "C" lockClosure(mvar "ptr") [R2]; + ("ptr" info) = foreign "C" lockClosure(mvar "ptr") []; #else info = GET_INFO(mvar); #endif - if (info == stg_FULL_MVAR_info) { + if (info == stg_MVAR_CLEAN_info) { + foreign "C" dirty_MVAR(BaseReg "ptr", mvar "ptr"); + } + + if (StgMVar_value(mvar) != stg_END_TSO_QUEUE_closure) { if (StgMVar_head(mvar) == stg_END_TSO_QUEUE_closure) { StgMVar_head(mvar) = CurrentTSO; } else { - StgTSO_link(StgMVar_tail(mvar)) = CurrentTSO; + foreign "C" setTSOLink(MyCapability() "ptr", + StgMVar_tail(mvar) "ptr", + CurrentTSO) []; } - StgTSO_link(CurrentTSO) = stg_END_TSO_QUEUE_closure; + StgTSO__link(CurrentTSO) = stg_END_TSO_QUEUE_closure; StgTSO_why_blocked(CurrentTSO) = BlockedOnMVar::I16; StgTSO_block_info(CurrentTSO) = mvar; StgMVar_tail(mvar) = CurrentTSO; + R1 = mvar; + R2 = val; jump stg_block_putmvar; } @@ -1665,36 +1743,35 @@ putMVarzh_fast /* actually perform the takeMVar */ tso = StgMVar_head(mvar); - PerformTake(tso, R2); - dirtyTSO(tso); + PerformTake(tso, val); + if (TO_W_(StgTSO_flags(tso)) & TSO_DIRTY == 0) { + foreign "C" dirty_TSO(MyCapability() "ptr", tso "ptr") []; + } -#if defined(GRAN) || defined(PAR) - /* ToDo: check 2nd arg (mvar) is right */ - "ptr" tso = foreign "C" unblockOne(MyCapability() "ptr", StgMVar_head(mvar) "ptr",mvar "ptr") []; - StgMVar_head(mvar) = tso; -#else - "ptr" tso = foreign "C" unblockOne(MyCapability() "ptr", StgMVar_head(mvar) "ptr") []; + ("ptr" tso) = foreign "C" unblockOne_(MyCapability() "ptr", + StgMVar_head(mvar) "ptr", 1) []; StgMVar_head(mvar) = tso; -#endif if (StgMVar_head(mvar) == stg_END_TSO_QUEUE_closure) { StgMVar_tail(mvar) = stg_END_TSO_QUEUE_closure; } #if defined(THREADED_RTS) - foreign "C" unlockClosure(mvar "ptr", stg_EMPTY_MVAR_info) []; + unlockClosure(mvar, stg_MVAR_DIRTY_info); +#else + SET_INFO(mvar,stg_MVAR_DIRTY_info); #endif jump %ENTRY_CODE(Sp(0)); } else { /* No further takes, the MVar is now full. */ - StgMVar_value(mvar) = R2; + StgMVar_value(mvar) = val; #if defined(THREADED_RTS) - foreign "C" unlockClosure(mvar "ptr", stg_FULL_MVAR_info) []; + unlockClosure(mvar, stg_MVAR_DIRTY_info); #else - SET_INFO(mvar,stg_FULL_MVAR_info); + SET_INFO(mvar,stg_MVAR_DIRTY_info); #endif jump %ENTRY_CODE(Sp(0)); } @@ -1711,18 +1788,22 @@ tryPutMVarzh_fast mvar = R1; #if defined(THREADED_RTS) - "ptr" info = foreign "C" lockClosure(mvar "ptr") [R2]; + ("ptr" info) = foreign "C" lockClosure(mvar "ptr") [R2]; #else info = GET_INFO(mvar); #endif - if (info == stg_FULL_MVAR_info) { + if (StgMVar_value(mvar) != stg_END_TSO_QUEUE_closure) { #if defined(THREADED_RTS) - foreign "C" unlockClosure(mvar "ptr", stg_FULL_MVAR_info) []; + unlockClosure(mvar, info); #endif RET_N(0); } + if (info == stg_MVAR_CLEAN_info) { + foreign "C" dirty_MVAR(BaseReg "ptr", mvar "ptr"); + } + if (StgMVar_head(mvar) != stg_END_TSO_QUEUE_closure) { /* There are takeMVar(s) waiting: wake up the first one @@ -1732,23 +1813,22 @@ tryPutMVarzh_fast /* actually perform the takeMVar */ tso = StgMVar_head(mvar); PerformTake(tso, R2); - dirtyTSO(tso); + if (TO_W_(StgTSO_flags(tso)) & TSO_DIRTY == 0) { + foreign "C" dirty_TSO(MyCapability() "ptr", tso "ptr") []; + } -#if defined(GRAN) || defined(PAR) - /* ToDo: check 2nd arg (mvar) is right */ - "ptr" tso = foreign "C" unblockOne(MyCapability() "ptr", StgMVar_head(mvar) "ptr",mvar "ptr") []; - StgMVar_head(mvar) = tso; -#else - "ptr" tso = foreign "C" unblockOne(MyCapability() "ptr", StgMVar_head(mvar) "ptr") []; + ("ptr" tso) = foreign "C" unblockOne_(MyCapability() "ptr", + StgMVar_head(mvar) "ptr", 1) []; StgMVar_head(mvar) = tso; -#endif if (StgMVar_head(mvar) == stg_END_TSO_QUEUE_closure) { StgMVar_tail(mvar) = stg_END_TSO_QUEUE_closure; } #if defined(THREADED_RTS) - foreign "C" unlockClosure(mvar "ptr", stg_EMPTY_MVAR_info) []; + unlockClosure(mvar, stg_MVAR_DIRTY_info); +#else + SET_INFO(mvar,stg_MVAR_DIRTY_info); #endif } else @@ -1757,9 +1837,9 @@ tryPutMVarzh_fast StgMVar_value(mvar) = R2; #if defined(THREADED_RTS) - foreign "C" unlockClosure(mvar "ptr", stg_FULL_MVAR_info) []; + unlockClosure(mvar, stg_MVAR_DIRTY_info); #else - SET_INFO(mvar,stg_FULL_MVAR_info); + SET_INFO(mvar,stg_MVAR_DIRTY_info); #endif } @@ -1778,7 +1858,7 @@ makeStableNamezh_fast ALLOC_PRIM( SIZEOF_StgStableName, R1_PTR, makeStableNamezh_fast ); - index = foreign "C" lookupStableName(R1 "ptr") []; + (index) = foreign "C" lookupStableName(R1 "ptr") []; /* Is there already a StableName for this heap object? * stable_ptr_table is a pointer to an array of snEntry structs. @@ -1801,7 +1881,7 @@ makeStablePtrzh_fast /* Args: R1 = a */ W_ sp; MAYBE_GC(R1_PTR, makeStablePtrzh_fast); - "ptr" sp = foreign "C" getStablePtr(R1 "ptr") []; + ("ptr" sp) = foreign "C" getStablePtr(R1 "ptr") []; RET_N(sp); } @@ -1823,17 +1903,17 @@ newBCOzh_fast /* R1 = instrs R2 = literals R3 = ptrs - R4 = itbls - R5 = arity - R6 = bitmap array + R4 = arity + R5 = bitmap array */ W_ bco, bitmap_arr, bytes, words; - bitmap_arr = R6; + bitmap_arr = R5; + words = BYTES_TO_WDS(SIZEOF_StgBCO) + StgArrWords_words(bitmap_arr); bytes = WDS(words); - ALLOC_PRIM( bytes, R1_PTR&R2_PTR&R3_PTR&R4_PTR&R6_PTR, newBCOzh_fast ); + ALLOC_PRIM( bytes, R1_PTR&R2_PTR&R3_PTR&R5_PTR, newBCOzh_fast ); bco = Hp - bytes + WDS(1); SET_HDR(bco, stg_BCO_info, W_[CCCS]); @@ -1841,8 +1921,7 @@ newBCOzh_fast StgBCO_instrs(bco) = R1; StgBCO_literals(bco) = R2; StgBCO_ptrs(bco) = R3; - StgBCO_itbls(bco) = R4; - StgBCO_arity(bco) = HALF_W_(R5); + StgBCO_arity(bco) = HALF_W_(R4); StgBCO_size(bco) = HALF_W_(words); // Copy the arity/bitmap info into the BCO @@ -1884,6 +1963,70 @@ mkApUpd0zh_fast RET_P(ap); } +unpackClosurezh_fast +{ +/* args: R1 = closure to analyze */ +// TODO: Consider the absence of ptrs or nonptrs as a special case ? + + W_ info, ptrs, nptrs, p, ptrs_arr, nptrs_arr; + info = %GET_STD_INFO(UNTAG(R1)); + + // Some closures have non-standard layout, so we omit those here. + W_ type; + type = TO_W_(%INFO_TYPE(info)); + switch [0 .. N_CLOSURE_TYPES] type { + case THUNK_SELECTOR : { + ptrs = 1; + nptrs = 0; + goto out; + } + case THUNK, THUNK_1_0, THUNK_0_1, THUNK_2_0, THUNK_1_1, + THUNK_0_2, THUNK_STATIC, AP, PAP, AP_STACK, BCO : { + ptrs = 0; + nptrs = 0; + goto out; + } + default: { + ptrs = TO_W_(%INFO_PTRS(info)); + nptrs = TO_W_(%INFO_NPTRS(info)); + goto out; + }} +out: + + W_ ptrs_arr_sz, nptrs_arr_sz; + nptrs_arr_sz = SIZEOF_StgArrWords + WDS(nptrs); + ptrs_arr_sz = SIZEOF_StgMutArrPtrs + WDS(ptrs); + + ALLOC_PRIM (ptrs_arr_sz + nptrs_arr_sz, R1_PTR, unpackClosurezh_fast); + + W_ clos; + clos = UNTAG(R1); + + ptrs_arr = Hp - nptrs_arr_sz - ptrs_arr_sz + WDS(1); + nptrs_arr = Hp - nptrs_arr_sz + WDS(1); + + SET_HDR(ptrs_arr, stg_MUT_ARR_PTRS_FROZEN_info, W_[CCCS]); + StgMutArrPtrs_ptrs(ptrs_arr) = ptrs; + p = 0; +for: + if(p < ptrs) { + W_[ptrs_arr + SIZEOF_StgMutArrPtrs + WDS(p)] = StgClosure_payload(clos,p); + p = p + 1; + goto for; + } + + SET_HDR(nptrs_arr, stg_ARR_WORDS_info, W_[CCCS]); + StgArrWords_words(nptrs_arr) = nptrs; + p = 0; +for2: + if(p < nptrs) { + W_[BYTE_ARR_CTS(nptrs_arr) + WDS(p)] = StgClosure_payload(clos, p+ptrs); + p = p + 1; + goto for2; + } + RET_NPP(info, ptrs_arr, nptrs_arr); +} + /* ----------------------------------------------------------------------------- Thread I/O blocking primitives -------------------------------------------------------------------------- */ @@ -1892,11 +2035,11 @@ mkApUpd0zh_fast * macro in Schedule.h). */ #define APPEND_TO_BLOCKED_QUEUE(tso) \ - ASSERT(StgTSO_link(tso) == END_TSO_QUEUE); \ + ASSERT(StgTSO__link(tso) == END_TSO_QUEUE); \ if (W_[blocked_queue_hd] == END_TSO_QUEUE) { \ W_[blocked_queue_hd] = tso; \ } else { \ - StgTSO_link(W_[blocked_queue_tl]) = tso; \ + foreign "C" setTSOLink(MyCapability() "ptr", W_[blocked_queue_tl] "ptr", tso) []; \ } \ W_[blocked_queue_tl] = tso; @@ -1904,7 +2047,7 @@ waitReadzh_fast { /* args: R1 */ #ifdef THREADED_RTS - foreign "C" barf("waitRead# on threaded RTS"); + foreign "C" barf("waitRead# on threaded RTS") never returns; #else ASSERT(StgTSO_why_blocked(CurrentTSO) == NotBlocked::I16); @@ -1921,7 +2064,7 @@ waitWritezh_fast { /* args: R1 */ #ifdef THREADED_RTS - foreign "C" barf("waitWrite# on threaded RTS"); + foreign "C" barf("waitWrite# on threaded RTS") never returns; #else ASSERT(StgTSO_why_blocked(CurrentTSO) == NotBlocked::I16); @@ -1946,7 +2089,7 @@ delayzh_fast #endif #ifdef THREADED_RTS - foreign "C" barf("delay# on threaded RTS"); + foreign "C" barf("delay# on threaded RTS") never returns; #else /* args: R1 (microsecond delay amount) */ @@ -1956,9 +2099,9 @@ delayzh_fast #ifdef mingw32_HOST_OS /* could probably allocate this on the heap instead */ - "ptr" ares = foreign "C" stgMallocBytes(SIZEOF_StgAsyncIOResult, + ("ptr" ares) = foreign "C" stgMallocBytes(SIZEOF_StgAsyncIOResult, stg_delayzh_malloc_str); - reqID = foreign "C" addDelayRequest(R1); + (reqID) = foreign "C" addDelayRequest(R1); StgAsyncIOResult_reqID(ares) = reqID; StgAsyncIOResult_len(ares) = 0; StgAsyncIOResult_errCode(ares) = 0; @@ -1975,8 +2118,15 @@ delayzh_fast #else W_ time; - time = foreign "C" getourtimeofday() [R1]; - target = (R1 / (TO_W_(RtsFlags_MiscFlags_tickInterval(RtsFlags))*1000)) + time; + W_ divisor; + (time) = foreign "C" getourtimeofday() [R1]; + divisor = TO_W_(RtsFlags_MiscFlags_tickInterval(RtsFlags)); + if (divisor == 0) { + divisor = 50; + } + divisor = divisor * 1000; + target = ((R1 + divisor - 1) / divisor) /* divide rounding up */ + + time + 1; /* Add 1 as getourtimeofday rounds down */ StgTSO_block_info(CurrentTSO) = target; /* Insert the new thread in the sleeping queue. */ @@ -1985,15 +2135,15 @@ delayzh_fast while: if (t != END_TSO_QUEUE && StgTSO_block_info(t) < target) { prev = t; - t = StgTSO_link(t); + t = StgTSO__link(t); goto while; } - StgTSO_link(CurrentTSO) = t; + StgTSO__link(CurrentTSO) = t; if (prev == NULL) { W_[sleeping_queue] = CurrentTSO; } else { - StgTSO_link(prev) = CurrentTSO; + foreign "C" setTSOLink(MyCapability() "ptr", prev "ptr", CurrentTSO) []; } jump stg_block_noregs; #endif @@ -2009,7 +2159,7 @@ asyncReadzh_fast CInt reqID; #ifdef THREADED_RTS - foreign "C" barf("asyncRead# on threaded RTS"); + foreign "C" barf("asyncRead# on threaded RTS") never returns; #else /* args: R1 = fd, R2 = isSock, R3 = len, R4 = buf */ @@ -2017,10 +2167,10 @@ asyncReadzh_fast StgTSO_why_blocked(CurrentTSO) = BlockedOnRead::I16; /* could probably allocate this on the heap instead */ - "ptr" ares = foreign "C" stgMallocBytes(SIZEOF_StgAsyncIOResult, + ("ptr" ares) = foreign "C" stgMallocBytes(SIZEOF_StgAsyncIOResult, stg_asyncReadzh_malloc_str) [R1,R2,R3,R4]; - reqID = foreign "C" addIORequest(R1, 0/*FALSE*/,R2,R3,R4 "ptr") []; + (reqID) = foreign "C" addIORequest(R1, 0/*FALSE*/,R2,R3,R4 "ptr") []; StgAsyncIOResult_reqID(ares) = reqID; StgAsyncIOResult_len(ares) = 0; StgAsyncIOResult_errCode(ares) = 0; @@ -2037,17 +2187,17 @@ asyncWritezh_fast CInt reqID; #ifdef THREADED_RTS - foreign "C" barf("asyncWrite# on threaded RTS"); + foreign "C" barf("asyncWrite# on threaded RTS") never returns; #else /* args: R1 = fd, R2 = isSock, R3 = len, R4 = buf */ ASSERT(StgTSO_why_blocked(CurrentTSO) == NotBlocked::I16); StgTSO_why_blocked(CurrentTSO) = BlockedOnWrite::I16; - "ptr" ares = foreign "C" stgMallocBytes(SIZEOF_StgAsyncIOResult, + ("ptr" ares) = foreign "C" stgMallocBytes(SIZEOF_StgAsyncIOResult, stg_asyncWritezh_malloc_str) [R1,R2,R3,R4]; - reqID = foreign "C" addIORequest(R1, 1/*TRUE*/,R2,R3,R4 "ptr") []; + (reqID) = foreign "C" addIORequest(R1, 1/*TRUE*/,R2,R3,R4 "ptr") []; StgAsyncIOResult_reqID(ares) = reqID; StgAsyncIOResult_len(ares) = 0; @@ -2065,7 +2215,7 @@ asyncDoProczh_fast CInt reqID; #ifdef THREADED_RTS - foreign "C" barf("asyncDoProc# on threaded RTS"); + foreign "C" barf("asyncDoProc# on threaded RTS") never returns; #else /* args: R1 = proc, R2 = param */ @@ -2073,10 +2223,10 @@ asyncDoProczh_fast StgTSO_why_blocked(CurrentTSO) = BlockedOnDoProc::I16; /* could probably allocate this on the heap instead */ - "ptr" ares = foreign "C" stgMallocBytes(SIZEOF_StgAsyncIOResult, + ("ptr" ares) = foreign "C" stgMallocBytes(SIZEOF_StgAsyncIOResult, stg_asyncDoProczh_malloc_str) [R1,R2]; - reqID = foreign "C" addDoProcRequest(R1 "ptr",R2 "ptr") []; + (reqID) = foreign "C" addDoProcRequest(R1 "ptr",R2 "ptr") []; StgAsyncIOResult_reqID(ares) = reqID; StgAsyncIOResult_len(ares) = 0; StgAsyncIOResult_errCode(ares) = 0; @@ -2087,20 +2237,39 @@ asyncDoProczh_fast } #endif -/* ----------------------------------------------------------------------------- - ** temporary ** +// noDuplicate# tries to ensure that none of the thunks under +// evaluation by the current thread are also under evaluation by +// another thread. It relies on *both* threads doing noDuplicate#; +// the second one will get blocked if they are duplicating some work. +noDuplicatezh_fast +{ + SAVE_THREAD_STATE(); + ASSERT(StgTSO_what_next(CurrentTSO) == ThreadRunGHC::I16); + foreign "C" threadPaused (MyCapability() "ptr", CurrentTSO "ptr") []; + + if (StgTSO_what_next(CurrentTSO) == ThreadKilled::I16) { + jump stg_threadFinished; + } else { + LOAD_THREAD_STATE(); + ASSERT(StgTSO_what_next(CurrentTSO) == ThreadRunGHC::I16); + jump %ENTRY_CODE(Sp(0)); + } +} - classes CCallable and CReturnable don't really exist, but the - compiler insists on generating dictionaries containing references - to GHC_ZcCCallable_static_info etc., so we provide dummy symbols - for these. Some C compilers can't cope with zero-length static arrays, - so we have to make these one element long. - --------------------------------------------------------------------------- */ +getApStackValzh_fast +{ + W_ ap_stack, offset, val, ok; -section "rodata" { - GHC_ZCCCallable_static_info: W_ 0; -} + /* args: R1 = AP_STACK, R2 = offset */ + ap_stack = R1; + offset = R2; -section "rodata" { - GHC_ZCCReturnable_static_info: W_ 0; + if (%INFO_PTR(ap_stack) == stg_AP_STACK_info) { + ok = 1; + val = StgAP_STACK_payload(ap_stack,offset); + } else { + ok = 0; + val = R1; + } + RET_NP(ok,val); }