Value.newArrayBuffer

Creates a new ArrayBuffer from existing data in memory.

The data is not copied: while this allows sharing data with JavaScript efficiently, the caller must ensure that the memory region remains valid until the newly created object is released by JSC.

Optionally, a destroy_notify callback can be provided, which will be invoked with user_data as parameter when the ArrayBuffer object is released. This is intended to be used for freeing resources related to the memory region which contains the data:

GMappedFile *f = g_mapped_file_new (file_path, TRUE, NULL);
JSCValue *value = jsc_value_new_array_buffer (context,
    g_mapped_file_get_contents (f), g_mapped_file_get_length (f),
    (GDestroyNotify) g_mapped_file_unref, f);

Note that the user_data can be the same value as data:

void *bytes = g_malloc0 (100);
JSCValue *value = jsc_value_new_array_buffer (context, bytes, 100, g_free, bytes);