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authorSverker Eriksson <[email protected]>2014-05-02 14:57:35 +0200
committerRickard Green <[email protected]>2014-05-13 16:20:27 +0200
commit94d877a95de7f22fc66f0737da54cc6500a7231c (patch)
tree3539431340cfb83b4a776e0bb86afe39cad8b343 /erts/emulator/beam
parent9e19d1bf9fc7dc322823327e5e78f4ec0c3cee37 (diff)
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HiPE wrappers for BIFs disabling GC
Diffstat (limited to 'erts/emulator/beam')
-rw-r--r--erts/emulator/beam/bif.h45
-rw-r--r--erts/emulator/beam/external.c74
2 files changed, 53 insertions, 66 deletions
diff --git a/erts/emulator/beam/bif.h b/erts/emulator/beam/bif.h
index 51b77a95ed..669cbfd102 100644
--- a/erts/emulator/beam/bif.h
+++ b/erts/emulator/beam/bif.h
@@ -392,6 +392,51 @@ erts_bif_prep_await_proc_exit_apply_trap(Process *c_p,
Eterm args[],
int nargs);
+#ifndef HIPE
+
+#define HIPE_WRAPPER_BIF_DISABLE_GC(BIF_NAME, ARITY)
+
+#else
+
+#include "erl_fun.h"
+#include "hipe_mode_switch.h"
+
+/*
+ * Hipe wrappers used by native code for BIFs that disable GC while trapping.
+ * Also add usage of the wrapper in ../hipe/hipe_bif_list.m4
+ *
+ * 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.
+ */
+
+
+#define HIPE_WRAPPER_BIF_DISABLE_GC(BIF_NAME, ARITY) \
+BIF_RETTYPE hipe_wrapper_ ## BIF_NAME ## _ ## ARITY (Process* c_p, \
+ Eterm* args); \
+BIF_RETTYPE hipe_wrapper_ ## BIF_NAME ## _ ## ARITY (Process* c_p, \
+ Eterm* args) \
+{ \
+ BIF_RETTYPE res; \
+ hipe_reserve_beam_trap_frame(c_p, args, ARITY); \
+ res = BIF_NAME ## _ ## ARITY (c_p, args); \
+ if (is_value(res) || c_p->freason != TRAP) { \
+ hipe_unreserve_beam_trap_frame(c_p); \
+ } \
+ return res; \
+}
+
+#endif
+
+
#include "erl_bif_table.h"
#endif
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*/