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| author | Sverker Eriksson <[email protected]> | 2019-02-22 13:33:47 +0100 |
|---|---|---|
| committer | GitHub <[email protected]> | 2019-02-22 13:33:47 +0100 |
| commit | d49b77d0c250e0dfd183ec0f62664f4f60c2ffec (patch) | |
| tree | 531da8b58ab0b8ecd2ebc427d3c1b6a8c943a56a /erts/emulator/beam/erl_nif.c | |
| parent | 1af28d672de91a12bea2c6332a14f040fbf4d63a (diff) | |
| parent | edcec4c9166bfdfbd3131ee1472abcade8ccac15 (diff) | |
| download | otp-d49b77d0c250e0dfd183ec0f62664f4f60c2ffec.tar.gz otp-d49b77d0c250e0dfd183ec0f62664f4f60c2ffec.tar.bz2 otp-d49b77d0c250e0dfd183ec0f62664f4f60c2ffec.zip | |
Merge PR-2147 from sverker/sverker/enif-null-pid/OTP-15011
Add enif_set_pid_undefined & enif_is_pid_undefined
Diffstat (limited to 'erts/emulator/beam/erl_nif.c')
| -rw-r--r-- | erts/emulator/beam/erl_nif.c | 14 |
1 files changed, 14 insertions, 0 deletions
diff --git a/erts/emulator/beam/erl_nif.c b/erts/emulator/beam/erl_nif.c index b2bd28fcbb..349d9bf13a 100644 --- a/erts/emulator/beam/erl_nif.c +++ b/erts/emulator/beam/erl_nif.c @@ -1083,6 +1083,17 @@ int enif_get_local_pid(ErlNifEnv* env, ERL_NIF_TERM term, ErlNifPid* pid) return 0; } +void enif_set_pid_undefined(ErlNifPid* pid) +{ + pid->pid = am_undefined; +} + +int enif_is_pid_undefined(const ErlNifPid* pid) +{ + ASSERT(pid->pid == am_undefined || is_internal_pid(pid->pid)); + return pid->pid == am_undefined; +} + int enif_get_local_port(ErlNifEnv* env, ERL_NIF_TERM term, ErlNifPort* port) { if (is_internal_port(term)) { @@ -3341,6 +3352,9 @@ int enif_monitor_process(ErlNifEnv* env, void* obj, const ErlNifPid* target_pid, } ASSERT(rsrc->type->down); + if (target_pid->pid == am_undefined) + return 1; + ref = erts_make_ref_in_buffer(tmp); mdp = erts_monitor_create(ERTS_MON_TYPE_RESOURCE, ref, |