refc_binary.h

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Functions

struct RefcBinary *refc_binary_create_resource(size_t size, struct ResourceType *resource_type)

Create a reference-counted resource object outside of the process heap.

This function will create a reference-counted resource object outside of the context heap. A blob will be allocated in the VM memory (e.g., via malloc). The allocated data will include an internal data structure that includes the data size and reference count.

Parameters:

• size – the size of the data to create

• resource_type – the resource type, NULL for regular refc binaries.

Returns:

a pointer to the out-of-context data.

static inline struct RefcBinary *refc_binary_create_refc(size_t size)

Create a reference-counted binary outside of the process heap.

This function will create a reference-counted binary outside of the context heap. A blob will be allocated in the VM memory (e.g., via malloc). The allocated data will include an internal data structure that includes the data size and reference count.

Parameters:

• size – the size of the data to create

Returns:

a pointer to the out-of-context data.

const char *refc_binary_get_data(const struct RefcBinary *ptr)

get the data of the off-context binary

Return the data of the off-context binary

Parameters:

• ptr – Refc binary returned from memory_create_refc_binary

struct RefcBinary *refc_binary_from_data(void *ptr)

get the refc binary from its pointer

This must only be passed the result of refc_binary_get_data.

Parameters:

• ptr – pointer obtained from refc_binary_get_data

void refc_binary_increment_refcount(struct RefcBinary *ptr)

Increment the reference count on the refc binary.

Parameters:

• ptr – the refc binary

bool refc_binary_decrement_refcount(struct RefcBinary *ptr, GlobalContext *global)

Decrement the reference count on the refc binary.

This function will call refc_binary_destroy if the reference count reaches 0.

Parameters:

• ptr – the refc binary

• global – the global context

Returns:

true if the refc binary was free’d; false, otherwise

void refc_binary_destroy(struct RefcBinary *refc, struct GlobalContext *global)

Destroy a refc binary after its reference count reached 0.

This function will call the destructor if the refc binary is a resource and will free the refc binary.

Parameters:

• refc – the binary to destroy

• global – the global context

term refc_binary_create_binary_info(Context *ctx)

TODO consider implementing erlang:memory/0,1 instead

size_t refc_binary_total_size(Context *ctx)

Return the total size (in bytes) of all reference counted binaries.

Returns:

the total size (in bytes) of all reference counted binaries

struct RefcBinary

#include <refc_binary.h>

Collaboration diagram for RefcBinary:

Public Members

struct ListHead head

size_t ATOMIC ref_count

size_t size

struct ResourceType *resource_type

uint8_t data[]