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Add the enif_is_exception function to allow callers to determine
whether an ERL_NIF_TERM represents an exception. (Currently the only
supported exception is badarg since only enif_make_badarg exists, but
this will likely be expanded in future releases.) This allows NIF code
to call other NIF functions that return ERL_NIF_TERM and properly
check to see if the returned terms are exceptions. Without the
enif_is_exception function, developers have to create their own means
of checking whether a function creates an exception, such as returning
boolean success/failure indicators or some other special value
indicating that an exception is in effect.
The declaration of enif_is_exception in erl_nif_api_funcs.h respects
the order of declarations required to keep compatibility on Windows.
Add a new test to verify the operation of enif_is_exception.
Modify the erl_nif man page to add a description of enif_is_exception
and also to clarify the requirements of calling the enif_make_badarg
function. If code calls enif_make_badarg, the env passed in gets set
with exception information and so the return value of the calling
function MUST be the badarg term returned from enif_make_badarg. Also
clarify that the result of enif_make_badarg may be passed only to
enif_is_exception and not to any other NIF API functions.
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In the erl_nif documentation, clarify how and when NIF resource
objects can be deallocated. Specifically, add focus for the case of
calling enif_release_resource immediately after obtaining a resource
term from enif_make_resource, since this is likely to be a common
approach NIFs use to manage resources.
Also fix a couple misspellings in the erl_nif documentation.
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enif_realloc_binary return int
enif_alloc/enif_free does not accept env as first argument.
enif_send return int
enif_self in alphabetic order
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Also made the SEEALSO link at the bottom of erl_nif.xml more "erlangish".
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New NIF features:
Send messages from a NIF, or from thread created by NIF, to any local
process (enif_send)
Store terms between NIF calls (enif_alloc_env, enif_make_copy)
Create binary terms with user defined memory management
(enif_make_resource_binary)
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Add new NIF API functions
- enif_make_atom_len
- enif_make_existing_atom_len
- enif_make_string_len
These are basically the same as enif_make_atom,
enif_make_existing_atom and enif_make_string except that the
new functions require a length parameter instead of a
null-terminated C-string.
Signed-off-by: Tuncer Ayaz <[email protected]>
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Add new NIF API functions
- enif_get_atom_length
- enif_get_list_length
Signed-off-by: Tuncer Ayaz <[email protected]>
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Add new NIF API functions
- enif_is_list
- enif_is_tuple
Signed-off-by: Tuncer Ayaz <[email protected]>
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New NIF API function enif_make_new_binary
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Fix a couple trivial typos in erl_nif.xml.
Signed-off-by: Tuncer Ayaz <[email protected]>
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Driver API for multi-threading made available for NIFs.
Support for mempory managed (garbage collected) resource objects.
A way to pass "pointers" to native data structures between C and
Erlang in a safe way.
Support for references, floats and term comparison.
Various new functions, like enif_inspect_iolist_as_binary,
enif_make_sub_binary, enif_get_string, enif_get_atom,
enif_make_tuple_from_array, enif_make_list_from_array,
enif_make_existing_atom.
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Driver API for multi-threading made available for NIFs.
Support for mempory managed (garbage collected) resource objects.
A way to pass "pointers" to native data structures between C and
Erlang in a safe way.
Support for references, floats and term comparison.
Various new functions, like enif_inspect_iolist_as_binary,
enif_make_sub_binary, enif_get_string, enif_get_atom,
enif_make_tuple_from_array, enif_make_list_from_array,
enif_make_existing_atom.
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Driver API for multi-threading made available for NIFs.
Support for mempory managed (garbage collected) resource objects.
A way to pass "pointers" to native data structures between C and
Erlang in a safe way.
Various new functions, like enif_inspect_iolist_as_binary,
enif_make_sub_binary, enif_get_string, enif_get_atom,
enif_make_tuple_from_array, enif_make_list_from_array,
enif_make_existing_atom.
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environment after a number of bugs are fixed and some features
are added in the documentation build process.
- The arity calculation is updated.
- The module prefix used in the function names for bif's are
removed in the generated links so the links will look like
http://www.erlang.org/doc/man/erlang.html#append_element-2
instead of
http://www.erlang.org/doc/man/erlang.html#erlang:append_element-2
- Enhanced the menu positioning in the html documentation when a
new page is loaded.
- A number of corrections in the generation of man pages (thanks
to Sergei Golovan)
- Moved some man pages to more apropriate sections, pages in
section 4 moved to 5 and pages in 6 moved to 7.
- The legal notice is taken from the xml book file so OTP's
build process can be used for non OTP applications.
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NIF function prototypes in order to allow more than 3 function
arguments. Also an incompatible change in the return value of
erlang:load_nif/2. Added support for references, floats and term
comparison in NIFs. Read more in the documentation of erl_nif and
erlang:load_nif/2.
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