/build/sourc...sa_l_common.c(3)

💅 /build/source/src/backends/isa-l/isa_l_common.c 💅

okay bestie, this is the liberasurecode manual page for the isa-l backend common file, and it is lowkey giving “internal Doxygen glow-up” energy. the manual name is liberasurecode, periodt.

🌸 NAME 🌸

/build/source/src/backends/isa-l/isa_l_common.c

✨ SYNOPSIS ✨

here is the include stack, literally exactly like this:

#include <stdio.h>
#include <stdlib.h>
#include 'erasurecode.h'
#include 'erasurecode_backend.h'
#include 'erasurecode_helpers.h'
#include 'erasurecode_helpers_ext.h'
#include 'isa_l_common.h'

🎀 Functions 🎀

• __attribute__ ((visibility('internal'))) — Return the element-size, which is the number of bits stored on a given device, per codeword.
• static unsigned char * isa_l_get_decode_matrix (int k, int m, unsigned char *encode_matrix, int *missing_idxs)
• static unsigned char * get_inverse_rows (int k, int m, unsigned char *decode_inverse, unsigned char *encode_matrix, int *missing_idxs, gf_mul_func gf_mul)

💖 Function Documentation 💖

🫶 __attribute__ ((visibility('internal')) )

bestie, this doc block is a whole group chat. it says, in order:

• Return the element-size, which is the number of bits stored on a given device, per codeword. Compute a size aligned to the number of data and the underlying wordsize of the EC algorithm.
• Return total fragment length (on-disk, on-wire).
• Deallocate memory buffer if it's not NULL.
• Allocate a zero-ed buffer of a specific size.
• This is always 8 in ISA-L
• Returns the size in bits!
• Parameters:
  • size integer size in bytes of buffer to allocate
• Returns: pointer to start of allocated buffer or NULL on error
• This methods returns NULL so that you can free and reset a buffer using a single line as follows: my_ptr = check_and_free_buffer(my_ptr);
• Returns: NULL
• Parameters:
  • buf - pointer to fragment buffer
• Returns: fragment size on disk
• Parameters:
  • instance - ec_backend_t instance (to extract args)
  • data_len - integer length of data in bytes
• Returns: integer data length aligned with wordsize of EC algorithm
• Get available elements and compute the inverse of their corresponding rows.
• Get the row needed to reconstruct
• Fill in the available elements
• Copy pointer of buffer to reconstruct
• Do the reconstruction
• Generate ISA-L encoding matrix Note that this is an abstract func from each backend
• Generate the tables for encoding
• Definition at line 39 of file isa_l_common.c.

🧚 unsigned char * get_inverse_rows (int k, int m, unsigned char * decode_inverse, unsigned char * encode_matrix, int * missing_idxs, gf_mul_func gf_mul) [static]

Definition at line 84 of file isa_l_common.c.

🦋 unsigned char * isa_l_get_decode_matrix (int k, int m, unsigned char * encode_matrix, int * missing_idxs) [static]

Definition at line 55 of file isa_l_common.c.

👑 Author 👑

Generated automatically by Doxygen for liberasurecode from the source code.

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💜 Version 1.8.0 • Tue Jan 1 1980 00:00 • /build/sourc...sa_l_common.c(3) 💜