MyFavMirrors/minio
1
0
Fork 0
mirror of https://github.com/minio/minio.git synced 2025-12-05 07:12:33 -05:00
Code Issues Packages Projects Releases Wiki Activity

Decoding bug fixes #42

Browse Source
This commit is contained in:
Harshavardhana
2014-11-29 14:58:40 -08:00
parent 5e0c5089e6
commit 4d7c1e3b68
8 changed files with 116 additions and 85 deletions
Download Patch File Download Diff File Expand all files Collapse all files

52
pkgs/erasure/decode.c
View File

@@ -19,13 +19,14 @@
#include <string.h>
#include <erasure-code.h>
#include "decode.h"
#include "common.h"
static int src_in_err (int r, int *src_err_list)
int32_t minio_src_in_err (int r, int *src_err_list)
{
int i;
for (i = 0; src_err_list[i] != -1; i++) {
if (src_err_list[i] == r) {
// true
return 1;
}
}
@@ -33,6 +34,51 @@ static int src_in_err (int r, int *src_err_list)
return 0;
}
int32_t minio_get_source_target(int *src_err_list,
int errs, int k, int m,
unsigned char **data,
unsigned char **coding,
unsigned char ***source,
unsigned char ***target)
{
int i, j, l;
unsigned char *tmp_source[k];
unsigned char *tmp_target[m];
// Fill zeroes
memset (tmp_source, 0, sizeof(tmp_source));
memset (tmp_target, 0, sizeof(tmp_target));
// Separate out source and target buffers from input data/coding chunks
// This separation needs to happen at error chunks from input chunks
for (i = 0, j = 0, l = 0;
((l < k) || (j < errs)) && (i < (k + m)); i++) {
if (!minio_src_in_err(i, src_err_list)) {
if (l < k) {
if (i < k)
tmp_source[l] =
(unsigned char *) data[i];
else
tmp_source[l] =
(unsigned char *) coding[i - k];
l++;
}
} else {
if (j < m) {
if (i < k)
tmp_target[j] =
(unsigned char *) data[i];
else
tmp_target[j] =
(unsigned char *) coding[i - k];
j++;
}
}
}
*source = tmp_source;
*target = tmp_target;
}
/*
Generate decode matrix during the decoding phase
*/
@@ -58,7 +104,7 @@ int minio_init_decoder (int *src_err_list,
return -1;
for (i = 0, r = 0; i < k; i++, r++) {
while (src_in_err(r, src_err_list))
while (minio_src_in_err(r, src_err_list))
r++;
for (j = 0; j < k; j++) {
input_matrix[k * i + j] = encode_matrix[k * r + j];