From 5d764f988ab09326d24e39a172083b09ab364c6c Mon Sep 17 00:00:00 2001 From: =?UTF-8?q?Bj=C3=B6rn-Egil=20Dahlberg?= Date: Wed, 18 Nov 2015 17:58:14 +0100 Subject: Refactor sharing preserved copy flags The TMPBUF option is no longer needed due to is_literal test and NONE was only used for initial debugging. So we remove the entire option. --- erts/emulator/beam/beam_debug.c | 10 ++-------- erts/emulator/beam/copy.c | 22 ++-------------------- erts/emulator/beam/erl_db.c | 4 ++-- erts/emulator/beam/erl_message.c | 9 ++++----- erts/emulator/beam/erl_message.h | 5 ----- erts/emulator/beam/erl_process.c | 5 ++--- erts/emulator/beam/global.h | 10 ++-------- 7 files changed, 14 insertions(+), 51 deletions(-) (limited to 'erts/emulator') diff --git a/erts/emulator/beam/beam_debug.c b/erts/emulator/beam/beam_debug.c index b007d000bf..e37bd4d78c 100644 --- a/erts/emulator/beam/beam_debug.c +++ b/erts/emulator/beam/beam_debug.c @@ -97,20 +97,14 @@ erts_debug_copy_shared_1(BIF_ALIST_1) Eterm* hp; Eterm copy; erts_shcopy_t info; -#ifdef SHCOPY_DISABLE - extern int disable_copy_shared; -#endif INITIALIZE_SHCOPY(info); - size = copy_shared_calculate(term, &info, 0); + size = copy_shared_calculate(term, &info); if (size > 0) { hp = HAlloc(p, size); } - copy = copy_shared_perform(term, size, &info, &hp, &p->off_heap, 0); + copy = copy_shared_perform(term, size, &info, &hp, &p->off_heap); DESTROY_SHCOPY(info); -#ifdef SHCOPY_DISABLE - disable_copy_shared = 0; -#endif BIF_RET(copy); } diff --git a/erts/emulator/beam/copy.c b/erts/emulator/beam/copy.c index 83ca527334..67a96f6442 100644 --- a/erts/emulator/beam/copy.c +++ b/erts/emulator/beam/copy.c @@ -923,10 +923,6 @@ Eterm copy_struct_x(Eterm obj, Uint sz, Eterm** hpp, ErlOffHeap* off_heap, Uint * Using an ESTACK but not very transparently; consider refactoring */ -#ifdef SHCOPY_DISABLE -int disable_copy_shared = ERTS_SHCOPY_FLG_NONE; -#endif - #define DECLARE_SHTABLE(s) \ DECLARE_ESTACK(s); \ Uint ESTK_CONCAT(s,_offset) = 0 @@ -1034,7 +1030,7 @@ do { \ * Copy object "obj" preserving sharing. * First half: count size and calculate sharing. */ -Uint copy_shared_calculate(Eterm obj, erts_shcopy_t *info, Uint32 flags) +Uint copy_shared_calculate(Eterm obj, erts_shcopy_t *info) { Uint sum; Uint e; @@ -1058,13 +1054,6 @@ Uint copy_shared_calculate(Eterm obj, erts_shcopy_t *info, Uint32 flags) if (IS_CONST(obj)) return 0; -#ifdef SHCOPY_DISABLE - flags |= disable_copy_shared; -#endif - - if (flags & ERTS_SHCOPY_FLG_NONE) - return size_object(obj); - VERBOSE(DEBUG_SHCOPY, ("[pid=%T] copy_shared_calculate %p\n", mypid, obj)); VERBOSE(DEBUG_SHCOPY, ("[pid=%T] message is %T\n", mypid, obj)); @@ -1299,7 +1288,7 @@ Uint copy_shared_calculate(Eterm obj, erts_shcopy_t *info, Uint32 flags) * Second half: copy and restore the object. */ Uint copy_shared_perform(Eterm obj, Uint size, erts_shcopy_t *info, - Eterm** hpp, ErlOffHeap* off_heap, Uint32 flags) { + Eterm** hpp, ErlOffHeap* off_heap) { Uint e; unsigned sz; Eterm* ptr; @@ -1328,13 +1317,6 @@ Uint copy_shared_perform(Eterm obj, Uint size, erts_shcopy_t *info, if (IS_CONST(obj)) return obj; -#ifdef SHCOPY_DISABLE - flags |= disable_copy_shared; -#endif - - if (flags & ERTS_SHCOPY_FLG_NONE) - return copy_struct(obj, size, hpp, off_heap); - VERBOSE(DEBUG_SHCOPY, ("[pid=%T] copy_shared_perform %p\n", mypid, obj)); /* step #2: was performed before this function was called diff --git a/erts/emulator/beam/erl_db.c b/erts/emulator/beam/erl_db.c index 59a0c0b808..3030c1c91a 100644 --- a/erts/emulator/beam/erl_db.c +++ b/erts/emulator/beam/erl_db.c @@ -1832,7 +1832,7 @@ BIF_RETTYPE ets_give_away_3(BIF_ALIST_3) tb->common.id, from_pid, BIF_ARG_3), - ERTS_SND_FLG_SHCOPY_TMPBUF); + 0); erts_smp_proc_unlock(to_proc, to_locks); UnUseTmpHeap(5,BIF_P); BIF_RET(am_true); @@ -3211,7 +3211,7 @@ retry: tb->common.id, p->common.id, heir_data), - ERTS_SND_FLG_SHCOPY_TMPBUF); + 0); erts_smp_proc_unlock(to_proc, to_locks); return !0; } diff --git a/erts/emulator/beam/erl_message.c b/erts/emulator/beam/erl_message.c index 66b337402d..a964f1968b 100644 --- a/erts/emulator/beam/erl_message.c +++ b/erts/emulator/beam/erl_message.c @@ -665,7 +665,6 @@ erts_send_message(Process* sender, #endif erts_aint32_t receiver_state; #ifdef SHCOPY_SEND - unsigned shflags = (flags & ERTS_SND_FLG_SHCOPY_MASK) >> ERTS_SND_FLG_SHCOPY_SHIFT; erts_shcopy_t info; #endif BM_STOP_TIMER(system); @@ -716,7 +715,7 @@ erts_send_message(Process* sender, #ifdef SHCOPY_SEND INITIALIZE_SHCOPY(info); - msize = copy_shared_calculate(message, &info, shflags); + msize = copy_shared_calculate(message, &info); #else msize = size_object(message); #endif @@ -737,7 +736,7 @@ erts_send_message(Process* sender, #ifdef SHCOPY_SEND if (is_not_immed(message)) - message = copy_shared_perform(message, msize, &info, &hp, ohp, shflags); + message = copy_shared_perform(message, msize, &info, &hp, ohp); DESTROY_SHCOPY(info); #else if (is_not_immed(message)) @@ -786,7 +785,7 @@ erts_send_message(Process* sender, BM_SWAP_TIMER(send,size); #ifdef SHCOPY_SEND INITIALIZE_SHCOPY(info); - msize = copy_shared_calculate(message, &info, shflags); + msize = copy_shared_calculate(message, &info); #else msize = size_object(message); #endif @@ -801,7 +800,7 @@ erts_send_message(Process* sender, BM_SWAP_TIMER(send,copy); #ifdef SHCOPY_SEND if (is_not_immed(message)) - message = copy_shared_perform(message, msize, &info, &hp, ohp, shflags); + message = copy_shared_perform(message, msize, &info, &hp, ohp); DESTROY_SHCOPY(info); #else if (is_not_immed(message)) diff --git a/erts/emulator/beam/erl_message.h b/erts/emulator/beam/erl_message.h index 52a648fe0b..740ae46a0f 100644 --- a/erts/emulator/beam/erl_message.h +++ b/erts/emulator/beam/erl_message.h @@ -238,11 +238,6 @@ do { \ #define ERTS_SND_FLG_NO_SEQ_TRACE (((unsigned) 1) << 0) -#define ERTS_SND_FLG_SHCOPY_SHIFT 1 -#define ERTS_SND_FLG_SHCOPY_MASK (ERTS_SHCOPY_FLG_MASK << ERTS_SND_FLG_SHCOPY_SHIFT) -#define ERTS_SND_FLG_SHCOPY_NONE (ERTS_SHCOPY_FLG_NONE << ERTS_SND_FLG_SHCOPY_SHIFT) -#define ERTS_SND_FLG_SHCOPY_TMPBUF (ERTS_SHCOPY_FLG_TMPBUF << ERTS_SND_FLG_SHCOPY_SHIFT) - #define ERTS_HEAP_FRAG_SIZE(DATA_WORDS) \ (sizeof(ErlHeapFragment) - sizeof(Eterm) + (DATA_WORDS)*sizeof(Eterm)) diff --git a/erts/emulator/beam/erl_process.c b/erts/emulator/beam/erl_process.c index a691a3c773..23616f36bf 100644 --- a/erts/emulator/beam/erl_process.c +++ b/erts/emulator/beam/erl_process.c @@ -10748,7 +10748,6 @@ erl_create_process(Process* parent, /* Parent of process (default group leader). erts_aint32_t state = 0; erts_aint32_t prio = (erts_aint32_t) PRIORITY_NORMAL; #ifdef SHCOPY_SPAWN - unsigned shflags = 0; /* could be taken from so->flags, if necessary */ erts_shcopy_t info; INITIALIZE_SHCOPY(info); #endif @@ -10804,7 +10803,7 @@ erl_create_process(Process* parent, /* Parent of process (default group leader). BM_SWAP_TIMER(system,size); #ifdef SHCOPY_SPAWN - arg_size = copy_shared_calculate(args, &info, shflags); + arg_size = copy_shared_calculate(args, &info); #else arg_size = size_object(args); #endif @@ -10886,7 +10885,7 @@ erl_create_process(Process* parent, /* Parent of process (default group leader). BM_START_TIMER(system); BM_SWAP_TIMER(system,copy); #ifdef SHCOPY_SPAWN - p->arg_reg[2] = copy_shared_perform(args, arg_size, &info, &p->htop, &p->off_heap, shflags); + p->arg_reg[2] = copy_shared_perform(args, arg_size, &info, &p->htop, &p->off_heap); DESTROY_SHCOPY(info); #else p->arg_reg[2] = copy_struct(args, arg_size, &p->htop, &p->off_heap); diff --git a/erts/emulator/beam/global.h b/erts/emulator/beam/global.h index e9f7901a51..98c275a20c 100644 --- a/erts/emulator/beam/global.h +++ b/erts/emulator/beam/global.h @@ -1052,14 +1052,8 @@ void erl_error(char*, va_list); #ifdef SHCOPY #define SHCOPY_SEND #define SHCOPY_SPAWN -/* Use this if you want sharing-preserving copy to be initially disabled */ -#undef SHCOPY_DISABLE #endif -#define ERTS_SHCOPY_FLG_MASK (((Uint32) 3) << 0) -#define ERTS_SHCOPY_FLG_NONE (((Uint32) 1) << 0) -#define ERTS_SHCOPY_FLG_TMPBUF (((Uint32) 1) << 1) /* forces INHEAP to true */ - /* The persistent state while the sharing-preserving copier works */ typedef struct { @@ -1106,8 +1100,8 @@ Eterm copy_object_x(Eterm, Process*, Uint); #define copy_object(Term, Proc) copy_object_x(Term,Proc,0) Uint size_object(Eterm); -Uint copy_shared_calculate(Eterm, erts_shcopy_t*, Uint32); -Eterm copy_shared_perform(Eterm, Uint, erts_shcopy_t*, Eterm**, ErlOffHeap*, Uint32); +Uint copy_shared_calculate(Eterm, erts_shcopy_t*); +Eterm copy_shared_perform(Eterm, Uint, erts_shcopy_t*, Eterm**, ErlOffHeap*); Uint size_shared(Eterm); -- cgit v1.2.3