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| author | Erlang/OTP <[email protected]> | 2010-01-30 08:48:16 +0000 |
|---|---|---|
| committer | Erlang/OTP <[email protected]> | 2010-01-30 08:48:16 +0000 |
| commit | 1cfb7ea778a90a234ae811666a594057198920b4 (patch) | |
| tree | 08068f27b6dcc4d5c44f5e6b547016aa6a571345 /lib/kernel/src/hipe_unified_loader.erl | |
| parent | cbc470bc904693618cc33ac16cc577401906b2f0 (diff) | |
| parent | 24146d322cd165c995d3a698e888cdb6f7a10741 (diff) | |
| download | otp-1cfb7ea778a90a234ae811666a594057198920b4.tar.gz otp-1cfb7ea778a90a234ae811666a594057198920b4.tar.bz2 otp-1cfb7ea778a90a234ae811666a594057198920b4.zip | |
Merge branch 'mp/hipe-smp-fixes' into ccase/r13b04_dev
* mp/hipe-smp-fixes:
work around hipe_mfa_info_table lock omission
fix hipe loader SMP non-atomicity error
OTP-8397 The loading of native code was not properly atomic in the SMP
emulator, which could cause crashes. Also a per-MFA information
table for the native code has now been protected with a lock
since it turns that it could be accessed concurrently in the SMP
emulator. (Thanks to Mikael Pettersson.)
Diffstat (limited to 'lib/kernel/src/hipe_unified_loader.erl')
| -rw-r--r-- | lib/kernel/src/hipe_unified_loader.erl | 32 |
1 files changed, 32 insertions, 0 deletions
diff --git a/lib/kernel/src/hipe_unified_loader.erl b/lib/kernel/src/hipe_unified_loader.erl index 7e26d57ced..42eab67478 100644 --- a/lib/kernel/src/hipe_unified_loader.erl +++ b/lib/kernel/src/hipe_unified_loader.erl @@ -96,6 +96,14 @@ load_hipe_modules() -> %% code:load_file/1) and the atom `no_native' on failure. load_native_code(Mod, Bin) when is_atom(Mod), is_binary(Bin) -> + erlang:system_flag(multi_scheduling, block), + try + load_native_code_nosmp(Mod, Bin) + after + erlang:system_flag(multi_scheduling, unblock) + end. + +load_native_code_nosmp(Mod, Bin) -> Architecture = erlang:system_info(hipe_architecture), try chunk_name(Architecture) of ChunkTag -> @@ -120,6 +128,14 @@ load_native_code(Mod, Bin) when is_atom(Mod), is_binary(Bin) -> -spec post_beam_load(atom()) -> 'ok'. post_beam_load(Mod) when is_atom(Mod) -> + erlang:system_flag(multi_scheduling, block), + try + post_beam_load_nosmp(Mod) + after + erlang:system_flag(multi_scheduling, unblock) + end. + +post_beam_load_nosmp(Mod) -> Architecture = erlang:system_info(hipe_architecture), try chunk_name(Architecture) of _ChunkTag -> patch_to_emu(Mod) catch _:_ -> ok @@ -141,6 +157,14 @@ version_check(Version, Mod) when is_atom(Mod) -> -spec load_module(Mod, binary(), _) -> 'bad_crc' | {'module',Mod} when is_subtype(Mod,atom()). load_module(Mod, Bin, Beam) -> + erlang:system_flag(multi_scheduling, block), + try + load_module_nosmp(Mod, Bin, Beam) + after + erlang:system_flag(multi_scheduling, unblock) + end. + +load_module_nosmp(Mod, Bin, Beam) -> load_module(Mod, Bin, Beam, []). load_module(Mod, Bin, Beam, OldReferencesToPatch) -> @@ -154,6 +178,14 @@ load_module(Mod, Bin, Beam, OldReferencesToPatch) -> -spec load(Mod, binary()) -> 'bad_crc' | {'module',Mod} when is_subtype(Mod,atom()). load(Mod, Bin) -> + erlang:system_flag(multi_scheduling, block), + try + load_nosmp(Mod, Bin) + after + erlang:system_flag(multi_scheduling, unblock) + end. + +load_nosmp(Mod, Bin) -> ?debug_msg("********* Loading funs in module ~w *********\n",[Mod]), %% Loading just some functions in a module; patch closures separately. put(hipe_patch_closures, true), |