diff options
Diffstat (limited to 'erts')
| -rw-r--r-- | erts/doc/src/erlang.xml | 12 | ||||
| -rw-r--r-- | erts/emulator/beam/beam_bif_load.c | 30 | ||||
| -rw-r--r-- | erts/emulator/beam/bif.tab | 6 | ||||
| -rw-r--r-- | erts/emulator/test/code_SUITE.erl | 32 |
4 files changed, 72 insertions, 8 deletions
diff --git a/erts/doc/src/erlang.xml b/erts/doc/src/erlang.xml index 9b560f04c9..79dc6838a6 100644 --- a/erts/doc/src/erlang.xml +++ b/erts/doc/src/erlang.xml @@ -518,6 +518,18 @@ </func> <func> + <name>check_old_code(Module) -> boolean()</name> + <fsummary>Check if a module has old code</fsummary> + <type> + <v>Module = atom()</v> + </type> + <desc> + <p>Returns <c>true</c> if the <c>Module</c> has old code, + and <c>false</c> otherwise.</p> + <p>See also <seealso marker="kernel:code">code(3)</seealso>.</p> + </desc> + </func> + <func> <name>check_process_code(Pid, Module) -> boolean()</name> <fsummary>Check if a process is executing old code for a module</fsummary> <type> diff --git a/erts/emulator/beam/beam_bif_load.c b/erts/emulator/beam/beam_bif_load.c index d76a7d8e9f..2561d7a630 100644 --- a/erts/emulator/beam/beam_bif_load.c +++ b/erts/emulator/beam/beam_bif_load.c @@ -162,6 +162,23 @@ BIF_RETTYPE code_make_stub_module_3(BIF_ALIST_3) return res; } +BIF_RETTYPE +check_old_code_1(BIF_ALIST_1) +{ + Module* modp; + + if (is_not_atom(BIF_ARG_1)) { + BIF_ERROR(BIF_P, BADARG); + } + modp = erts_get_module(BIF_ARG_1); + if (modp == NULL) { /* Doesn't exist. */ + BIF_RET(am_false); + } else if (modp->old_code == NULL) { /* No old code. */ + BIF_RET(am_false); + } + BIF_RET(am_true); +} + Eterm check_process_code_2(BIF_ALIST_2) { @@ -175,6 +192,13 @@ check_process_code_2(BIF_ALIST_2) Eterm res; if (internal_pid_index(BIF_ARG_1) >= erts_max_processes) goto error; + modp = erts_get_module(BIF_ARG_2); + if (modp == NULL) { /* Doesn't exist. */ + return am_false; + } else if (modp->old_code == NULL) { /* No old code. */ + return am_false; + } + #ifdef ERTS_SMP rp = erts_pid2proc_suspend(BIF_P, ERTS_PROC_LOCK_MAIN, BIF_ARG_1, ERTS_PROC_LOCK_MAIN); @@ -188,7 +212,6 @@ check_process_code_2(BIF_ALIST_2) ERTS_BIF_YIELD2(bif_export[BIF_check_process_code_2], BIF_P, BIF_ARG_1, BIF_ARG_2); } - modp = erts_get_module(BIF_ARG_2); res = check_process_code(rp, modp); #ifdef ERTS_SMP if (BIF_P != rp) { @@ -412,11 +435,6 @@ check_process_code(Process* rp, Module* modp) #endif #define INSIDE(a) (start <= (a) && (a) < end) - if (modp == NULL) { /* Doesn't exist. */ - return am_false; - } else if (modp->old_code == NULL) { /* No old code. */ - return am_false; - } /* * Pick up limits for the module. diff --git a/erts/emulator/beam/bif.tab b/erts/emulator/beam/bif.tab index d9dd80fa8b..b171e99e03 100644 --- a/erts/emulator/beam/bif.tab +++ b/erts/emulator/beam/bif.tab @@ -802,6 +802,12 @@ bif prim_file:internal_name2native/1 bif prim_file:internal_native2name/1 bif prim_file:internal_normalize_utf8/1 bif file:native_name_encoding/0 + +# +# New in R14B04. +# +bif erlang:check_old_code/1 + # # Obsolete # diff --git a/erts/emulator/test/code_SUITE.erl b/erts/emulator/test/code_SUITE.erl index a062cea117..29cbdedd17 100644 --- a/erts/emulator/test/code_SUITE.erl +++ b/erts/emulator/test/code_SUITE.erl @@ -20,7 +20,9 @@ -module(code_SUITE). -export([all/0, suite/0,groups/0,init_per_suite/1, end_per_suite/1, init_per_group/2,end_per_group/2, - new_binary_types/1,t_check_process_code/1,t_check_process_code_ets/1, + new_binary_types/1, + t_check_process_code/1,t_check_old_code/1, + t_check_process_code_ets/1, external_fun/1,get_chunk/1,module_md5/1,make_stub/1, make_stub_many_funs/1,constant_pools/1, false_dependency/1,coverage/1]). @@ -31,7 +33,7 @@ suite() -> [{ct_hooks,[ts_install_cth]}]. all() -> [new_binary_types, t_check_process_code, - t_check_process_code_ets, external_fun, get_chunk, + t_check_process_code_ets, t_check_old_code, external_fun, get_chunk, module_md5, make_stub, make_stub_many_funs, constant_pools, false_dependency, coverage]. @@ -248,6 +250,32 @@ fun_refc(F) -> Count. +%% Test the erlang:check_old_code/1 BIF. +t_check_old_code(Config) when is_list(Config) -> + ?line Data = ?config(data_dir, Config), + ?line File = filename:join(Data, "my_code_test"), + + ?line erlang:purge_module(my_code_test), + ?line erlang:delete_module(my_code_test), + ?line catch erlang:purge_module(my_code_test), + + ?line false = erlang:check_old_code(my_code_test), + + ?line {ok,my_code_test,Code} = compile:file(File, [binary]), + ?line {module,my_code_test} = code:load_binary(my_code_test, File, Code), + + ?line false = erlang:check_old_code(my_code_test), + ?line {module,my_code_test} = code:load_binary(my_code_test, File, Code), + ?line true = erlang:check_old_code(my_code_test), + + ?line true = erlang:purge_module(my_code_test), + ?line true = erlang:delete_module(my_code_test), + ?line true = erlang:purge_module(my_code_test), + + ?line {'EXIT',_} = (catch erlang:check_old_code([])), + + ok. + external_fun(Config) when is_list(Config) -> ?line false = erlang:function_exported(another_code_test, x, 1), ?line ExtFun = erlang:make_fun(id(another_code_test), x, 1), |