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| author | Sverker Eriksson <[email protected]> | 2012-01-24 14:28:39 +0100 |
|---|---|---|
| committer | Sverker Eriksson <[email protected]> | 2012-02-21 12:23:03 +0100 |
| commit | 72cab3a723925d0e369466d7de7567d8482b1318 (patch) | |
| tree | f0e1eb90fff6ff4f14712d6c9571bec40532bd06 /erts/emulator/beam | |
| parent | 725ebf78ac6d47c760f64f11c07eeb8b850ef920 (diff) | |
| download | otp-72cab3a723925d0e369466d7de7567d8482b1318.tar.gz otp-72cab3a723925d0e369466d7de7567d8482b1318.tar.bz2 otp-72cab3a723925d0e369466d7de7567d8482b1318.zip | |
erts: Fix purge of module with loaded nif library
Easy fallback solution that goes single threaded if the module to be
purged has a loaded nif lib.
Diffstat (limited to 'erts/emulator/beam')
| -rw-r--r-- | erts/emulator/beam/beam_bif_load.c | 26 |
1 files changed, 22 insertions, 4 deletions
diff --git a/erts/emulator/beam/beam_bif_load.c b/erts/emulator/beam/beam_bif_load.c index 7a65552d76..4a01e62dc8 100644 --- a/erts/emulator/beam/beam_bif_load.c +++ b/erts/emulator/beam/beam_bif_load.c @@ -40,7 +40,7 @@ static Eterm check_process_code(Process* rp, Module* modp); static void ensure_no_breakpoints(Process *, ErtsProcLocks, Eterm module); static void delete_code(Process *c_p, ErtsProcLocks c_p_locks, Module* modp); static void delete_export_references(Eterm module); -static int purge_module(int module); +static int purge_module(Process*, int module); static void decrement_refc(BeamInstr* code); static int is_native(BeamInstr* code); static int any_heap_ref_ptrs(Eterm* start, Eterm* end, char* mod_start, Uint mod_size); @@ -128,7 +128,7 @@ BIF_RETTYPE purge_module_1(BIF_ALIST_1) erts_export_consolidate(erts_active_code_ix());*/ - purge_res = purge_module(atom_val(BIF_ARG_1)); + purge_res = purge_module(BIF_P, atom_val(BIF_ARG_1)); /*SVERK erts_smp_thr_progress_unblock(); @@ -721,15 +721,17 @@ any_heap_refs(Eterm* start, Eterm* end, char* mod_start, Uint mod_size) static int -purge_module(int module) +purge_module(Process* c_p, int module) { ErtsCodeIndex code_ix; BeamInstr* code; BeamInstr* end; Module* modp; + int is_blocked = 0; int ret; erts_lock_code_ix(); +retry: code_ix = erts_active_code_ix(); /* @@ -753,6 +755,16 @@ purge_module(int module) * Unload any NIF library */ if (modp->old.nif != NULL) { + if (!is_blocked) { + /*SVERK Do unload nif without blocking */ + erts_rwunlock_old_code(code_ix); + erts_unlock_code_ix(); + erts_smp_proc_unlock(c_p, ERTS_PROC_LOCK_MAIN); + erts_smp_thr_progress_block(); + is_blocked = 1; + goto retry; + } + erts_unload_nif(modp->old.nif); modp->old.nif = NULL; } @@ -777,7 +789,13 @@ purge_module(int module) } erts_rwunlock_old_code(code_ix); } - erts_unlock_code_ix(); + if (is_blocked) { + erts_smp_thr_progress_unblock(); + erts_smp_proc_lock(c_p, ERTS_PROC_LOCK_MAIN); + } + else { + erts_unlock_code_ix(); + } return ret; } |