define galois_uninit_field

To free resources allocated by galois_init_default_field.

Signed-off-by: Loic Dachary <[email protected]>

Author: Loic Dachary

Examples/.gitignore

@@ -5,4 +5,5 @@
 /liberation_[0-9][0-9]
 /reed_sol_[0-9][0-9]
 /reed_sol_test_gf
-/reed_sol_time_gf
+/reed_sol_time_gf
+/test_galois

Examples/Makefile.am

@@ -25,10 +25,15 @@ bin_PROGRAMS = jerasure_01 \
                encoder \
                decoder
 
-TESTS=test_all_gfs.sh
+check_PROGRAMS = 
+
+TESTS=test_all_gfs.sh $(check_PROGRAMS)
 
 dist_noinst_SCRIPTS = test_all_gfs.sh time_all_gfs_argv_init.sh
 
+test_galois_SOURCES = test_galois.c
+check_PROGRAMS += test_galois
+
 jerasure_01_SOURCES = jerasure_01.c
 jerasure_02_SOURCES = jerasure_02.c
 jerasure_03_SOURCES = jerasure_03.c

Examples/test_galois.c

@@ -0,0 +1,23 @@
+#include <assert.h>
+#include "galois.h"
+
+int main(int argc, char **argv)
+{
+  assert(galois_init_default_field(4) == 0);
+  assert(galois_uninit_field(4) == 0);
+  assert(galois_init_default_field(4) == 0);
+  assert(galois_uninit_field(4) == 0);
+
+  assert(galois_init_default_field(8) == 0);
+  assert(galois_uninit_field(8) == 0);
+  assert(galois_init_default_field(8) == 0);
+  assert(galois_uninit_field(8) == 0);
+
+  return 0;
+}
+/*
+ * Local Variables:
+ * compile-command: "make test_galois && 
+ *    libtool --mode=execute valgrind --tool=memcheck --leak-check=full ./test_galois"
+ * End:
+ */

include/galois.h

@@ -47,6 +47,7 @@ extern "C" {
 #endif
 
 extern int galois_init_default_field(int w);
+extern int galois_uninit_field(int w);
 extern void galois_change_technique(gf_t *gf, int w);
 
 extern int galois_single_multiply(int a, int b, int w);

src/galois.c

@@ -181,6 +181,18 @@ int galois_init_default_field(int w)
   return 0;
 }
 
+int galois_uninit_field(int w)
+{
+  int ret = 0;
+  if (gfp_array[w] != NULL) {
+    int recursive = 1;
+    ret = gf_free(gfp_array[w], recursive);
+    free(gfp_array[w]);
+    gfp_array[w] = NULL;
+  }
+  return ret;
+}
+
 static void galois_init(int w)
 {
   if (w <= 0 || w > 32) {