From 94d877a95de7f22fc66f0737da54cc6500a7231c Mon Sep 17 00:00:00 2001
From: Sverker Eriksson <sverker@erlang.org>
Date: Fri, 2 May 2014 14:57:35 +0200
Subject: HiPE wrappers for BIFs disabling GC

---
 erts/emulator/beam/external.c | 74 +++++--------------------------------------
 1 file changed, 8 insertions(+), 66 deletions(-)

(limited to 'erts/emulator/beam/external.c')

diff --git a/erts/emulator/beam/external.c b/erts/emulator/beam/external.c
index 656de7c49a..e376253400 100644
--- a/erts/emulator/beam/external.c
+++ b/erts/emulator/beam/external.c
@@ -44,9 +44,6 @@
 #include "erl_zlib.h"
 #include "erl_map.h"
 
-#ifdef HIPE
-#include "hipe_mode_switch.h"
-#endif
 #define in_area(ptr,start,nbytes) ((UWord)((char*)(ptr) - (char*)(start)) < (nbytes))
 
 #define MAX_STRING_LEN 0xffff
@@ -1069,6 +1066,8 @@ static BIF_RETTYPE term_to_binary_trap_1(BIF_ALIST_1)
     }
 }
 
+HIPE_WRAPPER_BIF_DISABLE_GC(term_to_binary, 1)
+
 BIF_RETTYPE term_to_binary_1(BIF_ALIST_1)
 {
     Eterm res = erts_term_to_binary_int(BIF_P, BIF_ARG_1, 0, TERM_TO_BINARY_DFLAGS, NULL);
@@ -1081,6 +1080,8 @@ BIF_RETTYPE term_to_binary_1(BIF_ALIST_1)
     }
 }
 
+HIPE_WRAPPER_BIF_DISABLE_GC(term_to_binary, 2)
+
 BIF_RETTYPE term_to_binary_2(BIF_ALIST_2)
 {
     Process* p = BIF_P;
@@ -1544,11 +1545,15 @@ static Eterm binary_to_term_int(Process* p, Uint32 flags, Eterm bin, Binary* con
     BIF_TRAP1(&binary_to_term_trap_export, p, ctx->trap_bin);
 }
 
+HIPE_WRAPPER_BIF_DISABLE_GC(erts_internal_binary_to_term, 1)
+
 BIF_RETTYPE erts_internal_binary_to_term_1(BIF_ALIST_1)
 {
     return binary_to_term_int(BIF_P, 0, BIF_ARG_1, NULL);
 }
 
+HIPE_WRAPPER_BIF_DISABLE_GC(erts_internal_binary_to_term, 2)
+
 BIF_RETTYPE erts_internal_binary_to_term_2(BIF_ALIST_2)
 {
     Eterm opts;
@@ -4440,66 +4445,3 @@ error:
 #undef SKIP2
 #undef CHKSIZE
 }
-
-
-#ifdef HIPE
-BIF_RETTYPE hipe_wrapper_term_to_binary_1(BIF_ALIST_1);
-BIF_RETTYPE hipe_wrapper_term_to_binary_2(BIF_ALIST_2);
-BIF_RETTYPE hipe_wrapper_erts_internal_binary_to_term_1(BIF_ALIST_1);
-BIF_RETTYPE hipe_wrapper_erts_internal_binary_to_term_2(BIF_ALIST_2);
-
-/* Hipe wrappers used by native code for BIFs that disable GC while trapping.
- *
- * Problem:
- * When native code calls a BIF that traps, hipe_mode_switch will push a
- * "trap frame" on the Erlang stack in order to find its way back from beam_emu
- * back to native caller when finally done. If GC is disabled and stack/heap
- * is full there is no place to push the "trap frame".
- *
- * Solution:
- * We reserve space on stack for the "trap frame" here before the BIF is called.
- * If the BIF does not trap, the space is reclaimed here before returning.
- * If the BIF traps, hipe_push_beam_trap_frame() will detect that a "trap frame"
- * already is reserved and use it.
- */
-BIF_RETTYPE hipe_wrapper_term_to_binary_1(BIF_ALIST_1)
-{
-    Eterm res;
-    hipe_reserve_beam_trap_frame(BIF_P, BIF__ARGS, 1);
-    res = term_to_binary_1(BIF_P, BIF__ARGS);
-    if (is_value(res) || BIF_P->freason != TRAP) {
-	hipe_unreserve_beam_trap_frame(BIF_P);
-    }
-    return res;
-}
-BIF_RETTYPE hipe_wrapper_term_to_binary_2(BIF_ALIST_2)
-{
-    Eterm res;
-    hipe_reserve_beam_trap_frame(BIF_P, BIF__ARGS, 2);
-    res = term_to_binary_2(BIF_P, BIF__ARGS);
-    if (is_value(res) || BIF_P->freason != TRAP) {
-	hipe_unreserve_beam_trap_frame(BIF_P);
-    }
-    return res;
-}
-BIF_RETTYPE hipe_wrapper_erts_internal_binary_to_term_1(BIF_ALIST_1)
-{
-    Eterm res;
-    hipe_reserve_beam_trap_frame(BIF_P, BIF__ARGS, 1);
-    res = erts_internal_binary_to_term_1(BIF_P, BIF__ARGS);
-    if (is_value(res) || BIF_P->freason != TRAP) {
-	hipe_unreserve_beam_trap_frame(BIF_P);
-    }
-    return res;
-}
-BIF_RETTYPE hipe_wrapper_erts_internal_binary_to_term_2(BIF_ALIST_2)
-{
-    Eterm res;
-    hipe_reserve_beam_trap_frame(BIF_P, BIF__ARGS, 2);
-    res = erts_internal_binary_to_term_2(BIF_P, BIF__ARGS);
-    if (is_value(res) || BIF_P->freason != TRAP) {
-	hipe_unreserve_beam_trap_frame(BIF_P);
-    }
-    return res;
-}
-#endif /*HIPE*/
-- 
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