module.h

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Module loading functions.

This header defines all the module loading functions and the Module struct.

Defines

SMP_MODULE_LOCK(mod) smp_mutex_lock(mod->mutex)

SMP_MODULE_UNLOCK(mod) smp_mutex_unlock(mod->mutex)

Enums

enum ModuleLoadResult

Values:

enumerator MODULE_LOAD_OK = 0

enumerator MODULE_ERROR_FAILED_ALLOCATION = 1

Functions

size_t module_get_exported_functions_count(Module *this_module)

Count exported functions of a given module.

Get the number of exported functions. This function is used to compute the required heap size of the list of exported functions.

Parameters:

• this_module – the module to count exported functions of

Returns:

the number of exported functions

uint32_t module_search_exported_function(Module *this_module, AtomString func_name, int func_arity, GlobalContext *glb)

Gets exported function index by searching it by function name and arity.

Gets exported function index by searching it by function name and arity

Parameters:

• this_module – the module on which the function will be searched.

• func_name – function name atom string.

• func_arity – function arity.

• glb – the global context

static inline size_t module_get_exported_functions_list_size(Module *this_module)

Determine heap size of exported functions list.

Parameters:

• this_module – the module to count exported functions of

Returns:

the size, in terms, of the exported function list

term module_get_exported_functions(Module *this_module, Heap *heap, GlobalContext *global)

Get the list of exported functions.

Create a list of exported functions of the form {FunctionName, Arity} To create this list, the heap must be grown by module_get_exported_functions_list_size terms.

Parameters:

• this_module – the module to count exported functions of

• heap – heap to allocate tuples

• global – global context to fetch atoms

Returns:

a list of exported functions

void module_destroy(Module *module)

Module *module_new_from_iff_binary(GlobalContext *global, const void *iff_binary, unsigned long size)

Parse a BEAM file and returns a Module.

Parse a BEAM file a returns a newly allocated and initialized Module struct.

Parameters:

• global – the global context.

• iff_binary – the IFF file data.

• size – the size of the buffer containing the IFF data.

term module_load_literal(Module *mod, int index, Context *ctx)

Gets a literal stored on the literal table of the specified module.

Loads and deserialize a term stored in the literal table and returns a term.

Parameters:

• mod – The module that owns that is going to be loaded.

• index – a valid literal index.

• ctx – the target context.

static inline AtomString module_get_atom_string_by_id(const Module *mod, int local_atom_id, GlobalContext *glb)

Gets the AtomString for the given local atom id.

Gets an AtomString for the given local atom id from the global table.

Parameters:

• mod – the module that owns the atom.

• local_atom_id – module atom table index.

• glb – the global context.

Returns:

the AtomString for the given module atom index.

static inline term module_get_atom_term_by_id(const Module *mod, int local_atom_id)

Gets a term for the given local atom id.

Gets the global atom id for the the given local atom id and casts it to a term.

Parameters:

• mod – the module that owns the atom.

• local_atom_id – module atom table index.

Returns:

a term for the given module atom index.

const struct ExportedFunction *module_resolve_function0(Module *mod, int import_table_index, struct UnresolvedFunctionCall *unresolved, GlobalContext *glb)

static inline term module_get_name(const Module *mod)

Get the module name, as an atom term.

Parameters:

• mod – the module to get the name of

Returns:

a term for the given module atom index.

static inline const struct ExportedFunction *module_resolve_function(Module *mod, int import_table_index, GlobalContext *glb)

Resolves an unresolved function reference.

Resolves an unresolved function reference and it replaces the unresolved reference with a ModuleFunction struct, also it loads the referenced module if it hasn’t been loaded yet.

Parameters:

• mod – the module containing the function to resolve.

• import_table_index – the unresolved function index.

• glb – the global context

static inline term module_address(unsigned int module_index, unsigned int instruction_index)

static inline uint32_t module_get_fun_freeze(const Module *this_module, int fun_index)

static inline void module_get_fun(const Module *this_module, int fun_index, uint32_t *label, uint32_t *arity, uint32_t *n_freeze)

static inline const uint8_t *module_get_str(Module *mod, size_t offset, size_t *remaining)

bool module_get_function_from_label(Module *this_module, int label, AtomString *function_name, int *arity, GlobalContext *glb)

void module_insert_line_ref_offset(Module *mod, int line_ref, int offset)

int module_find_line(Module *mod, unsigned int offset)

static inline bool module_has_line_chunk(Module *mod)

Returns:

true if the module has line information, false, otherwise.

struct __attribute__

#include <module.h>

Public Members

char magic[4]

uint32_t size

uint32_t info_size

uint32_t version

uint32_t opcode_max

uint32_t labels

uint32_t functions_count

uint8_t code[1]

struct LiteralEntry

#include <module.h>

Public Members

uint32_t size

void const *data

struct ModuleFilename

#include <module.h>

Public Members

uint8_t *data

size_t len

struct LineRefOffset

#include <module.h>

Collaboration diagram for LineRefOffset:

Public Members

struct ListHead head

unsigned int offset

uint16_t line_ref

struct Module

#include <module.h>

Collaboration diagram for Module:

Public Members

CodeChunk *code

void *export_table

void *local_table

void *atom_table

void *fun_table

void *str_table

size_t str_table_len

uint16_t *line_refs

struct ModuleFilename *filenames

struct ListHead line_ref_offsets

const struct ExportedFunction **imported_funcs

const uint8_t **labels

void *literals_data

struct LiteralEntry *literals_table

int *local_atoms_to_global_table

void *module_platform_data

int module_index

int end_instruction_ii

unsigned int free_literals_data

Mutex *mutex