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| author | Lukas Larsson <[email protected]> | 2016-07-07 15:50:03 +0200 |
|---|---|---|
| committer | Lukas Larsson <[email protected]> | 2016-07-11 10:11:40 +0200 |
| commit | 3b186417f6641a3aa13a46e00712d7dfcb29fc0f (patch) | |
| tree | f4bb567f1178c920d3495176695f9a5f6f4a76c0 /erts/emulator/beam | |
| parent | 53bf2a9593a2f34151016f7d84fad6d213d76ee9 (diff) | |
| download | otp-3b186417f6641a3aa13a46e00712d7dfcb29fc0f.tar.gz otp-3b186417f6641a3aa13a46e00712d7dfcb29fc0f.tar.bz2 otp-3b186417f6641a3aa13a46e00712d7dfcb29fc0f.zip | |
erts: After a call to a tracer nif, reset htop
This is needed in order for the heap to never contain
any pointers to invalid memory. This is good for performance
and debugging reasons.
Diffstat (limited to 'erts/emulator/beam')
| -rw-r--r-- | erts/emulator/beam/erl_nif.c | 2 |
1 files changed, 2 insertions, 0 deletions
diff --git a/erts/emulator/beam/erl_nif.c b/erts/emulator/beam/erl_nif.c index 23931f0e54..c6127a4967 100644 --- a/erts/emulator/beam/erl_nif.c +++ b/erts/emulator/beam/erl_nif.c @@ -3502,6 +3502,7 @@ Eterm erts_nif_call_function(Process *p, Process *tracee, struct enif_environment_t env; ErlHeapFragment *orig_hf = MBUF(p); ErlOffHeap orig_oh = MSO(p); + Eterm *orig_htop = HEAP_TOP(p); ASSERT(is_internal_pid(p->common.id)); MBUF(p) = NULL; clear_offheap(&MSO(p)); @@ -3523,6 +3524,7 @@ Eterm erts_nif_call_function(Process *p, Process *tracee, /* restore original heap fragment list */ MBUF(p) = orig_hf; MSO(p) = orig_oh; + HEAP_TOP(p) = orig_htop; } else { /* Nif call was done without a process context, so we create a phony one. */ |