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authorRickard Green <[email protected]>2016-11-22 15:53:51 +0100
committerRickard Green <[email protected]>2016-11-22 15:53:51 +0100
commitd82ed483ae6bae52745d2725017d77cb2c7810c7 (patch)
tree07cd74ea0c5dd9db86363b472dfee1873d495816 /erts/emulator
parent2b41d8f318b7e5ec139d42fd2f01a132699be839 (diff)
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Fix saving of original arguments when rescheduling via NifExport
Diffstat (limited to 'erts/emulator')
-rw-r--r--erts/emulator/beam/erl_nif.c22
1 files changed, 12 insertions, 10 deletions
diff --git a/erts/emulator/beam/erl_nif.c b/erts/emulator/beam/erl_nif.c
index 3a547982da..55bd9f7455 100644
--- a/erts/emulator/beam/erl_nif.c
+++ b/erts/emulator/beam/erl_nif.c
@@ -2360,6 +2360,7 @@ init_nif_sched_data(ErlNifEnv* env, NativeFunPtr direct_fp, NativeFunPtr indirec
Eterm* reg;
NifExport* ep;
int i, scheduler;
+ int orig_argc;
execution_state(env, &proc, &scheduler);
@@ -2370,11 +2371,14 @@ init_nif_sched_data(ErlNifEnv* env, NativeFunPtr direct_fp, NativeFunPtr indirec
reg = erts_proc_sched_data(proc)->x_reg_array;
+ ASSERT(!need_save || proc->current);
+ orig_argc = need_save ? (int) proc->current[2] : 0;
+
ep = (NifExport*) ERTS_PROC_GET_NIF_TRAP_EXPORT(proc);
if (!ep)
- ep = allocate_nif_sched_data(proc, argc);
- else if (need_save && ep->rootset_extra < argc) {
- NifExport* new_ep = allocate_nif_sched_data(proc, argc);
+ ep = allocate_nif_sched_data(proc, orig_argc);
+ else if (need_save && ep->rootset_extra < orig_argc) {
+ NifExport* new_ep = allocate_nif_sched_data(proc, orig_argc);
destroy_nif_export(ep);
ep = new_ep;
}
@@ -2387,16 +2391,14 @@ init_nif_sched_data(ErlNifEnv* env, NativeFunPtr direct_fp, NativeFunPtr indirec
}
if (scheduler > 0)
ERTS_VBUMP_ALL_REDS(proc);
- for (i = 0; i < argc; i++) {
- if (need_save)
- ep->rootset[i+1] = reg[i];
- reg[i] = (Eterm) argv[i];
- }
if (need_save) {
- ASSERT(proc->current);
ep->saved_current = proc->current;
- ep->saved_argc = argc;
+ ep->saved_argc = orig_argc;
+ for (i = 0; i < orig_argc; i++)
+ ep->rootset[i+1] = reg[i];
}
+ for (i = 0; i < argc; i++)
+ reg[i] = (Eterm) argv[i];
proc->i = (BeamInstr*) ep->exp.addressv[0];
ep->exp.code[0] = (BeamInstr) proc->current[0];
ep->exp.code[1] = (BeamInstr) proc->current[1];