1 files changed, 0 insertions, 178 deletions
diff --git a/gnu/packages/patches/libunistring-gnulib-multi-core.patch b/gnu/packages/patches/libunistring-gnulib-multi-core.patch
deleted file mode 100644
index 709b20c6d2..0000000000
--- a/gnu/packages/patches/libunistring-gnulib-multi-core.patch
+++ /dev/null
@@ -1,178 +0,0 @@
-This patch fixes performance problems on multi-core machines
-as reported at <https://bugs.gnu.org/26441>.
-
-See commit 480d374e596a0ee3fed168ab42cd84c313ad3c89 in Gnulib
-by Bruno Haible <bruno@clisp.org>.
-
-diff --git a/tests/test-lock.c b/tests/test-lock.c
-index cb734b4e6..aa6de2739 100644
---- a/tests/test-lock.c
-+++ b/tests/test-lock.c
-@@ -50,6 +50,13 @@
-    Uncomment this to see if the operating system has a fair scheduler.  */
- #define EXPLICIT_YIELD 1
- 
-+/* Whether to use 'volatile' on some variables that communicate information
-+   between threads.  If set to 0, a lock is used to protect these variables.
-+   If set to 1, 'volatile' is used; this is theoretically equivalent but can
-+   lead to much slower execution (e.g. 30x slower total run time on a 40-core
-+   machine.  */
-+#define USE_VOLATILE 0
-+
- /* Whether to print debugging messages.  */
- #define ENABLE_DEBUGGING 0
- 
-@@ -103,6 +110,51 @@
- # define yield()
- #endif
- 
-+#if USE_VOLATILE
-+struct atomic_int {
-+  volatile int value;
-+};
-+static void
-+init_atomic_int (struct atomic_int *ai)
-+{
-+}
-+static int
-+get_atomic_int_value (struct atomic_int *ai)
-+{
-+  return ai->value;
-+}
-+static void
-+set_atomic_int_value (struct atomic_int *ai, int new_value)
-+{
-+  ai->value = new_value;
-+}
-+#else
-+struct atomic_int {
-+  gl_lock_define (, lock)
-+  int value;
-+};
-+static void
-+init_atomic_int (struct atomic_int *ai)
-+{
-+  gl_lock_init (ai->lock);
-+}
-+static int
-+get_atomic_int_value (struct atomic_int *ai)
-+{
-+  gl_lock_lock (ai->lock);
-+  int ret = ai->value;
-+  gl_lock_unlock (ai->lock);
-+  return ret;
-+}
-+static void
-+set_atomic_int_value (struct atomic_int *ai, int new_value)
-+{
-+  gl_lock_lock (ai->lock);
-+  ai->value = new_value;
-+  gl_lock_unlock (ai->lock);
-+}
-+#endif
-+
- #define ACCOUNT_COUNT 4
- 
- static int account[ACCOUNT_COUNT];
-@@ -170,12 +222,12 @@ lock_mutator_thread (void *arg)
-   return NULL;
- }
- 
--static volatile int lock_checker_done;
-+static struct atomic_int lock_checker_done;
- 
- static void *
- lock_checker_thread (void *arg)
- {
--  while (!lock_checker_done)
-+  while (get_atomic_int_value (&lock_checker_done) == 0)
-     {
-       dbgprintf ("Checker %p before check lock\n", gl_thread_self_pointer ());
-       gl_lock_lock (my_lock);
-@@ -200,7 +252,8 @@ test_lock (void)
-   /* Initialization.  */
-   for (i = 0; i < ACCOUNT_COUNT; i++)
-     account[i] = 1000;
--  lock_checker_done = 0;
-+  init_atomic_int (&lock_checker_done);
-+  set_atomic_int_value (&lock_checker_done, 0);
- 
-   /* Spawn the threads.  */
-   checkerthread = gl_thread_create (lock_checker_thread, NULL);
-@@ -210,7 +263,7 @@ test_lock (void)
-   /* Wait for the threads to terminate.  */
-   for (i = 0; i < THREAD_COUNT; i++)
-     gl_thread_join (threads[i], NULL);
--  lock_checker_done = 1;
-+  set_atomic_int_value (&lock_checker_done, 1);
-   gl_thread_join (checkerthread, NULL);
-   check_accounts ();
- }
-@@ -254,12 +307,12 @@ rwlock_mutator_thread (void *arg)
-   return NULL;
- }
- 
--static volatile int rwlock_checker_done;
-+static struct atomic_int rwlock_checker_done;
- 
- static void *
- rwlock_checker_thread (void *arg)
- {
--  while (!rwlock_checker_done)
-+  while (get_atomic_int_value (&rwlock_checker_done) == 0)
-     {
-       dbgprintf ("Checker %p before check rdlock\n", gl_thread_self_pointer ());
-       gl_rwlock_rdlock (my_rwlock);
-@@ -284,7 +337,8 @@ test_rwlock (void)
-   /* Initialization.  */
-   for (i = 0; i < ACCOUNT_COUNT; i++)
-     account[i] = 1000;
--  rwlock_checker_done = 0;
-+  init_atomic_int (&rwlock_checker_done);
-+  set_atomic_int_value (&rwlock_checker_done, 0);
- 
-   /* Spawn the threads.  */
-   for (i = 0; i < THREAD_COUNT; i++)
-@@ -295,7 +349,7 @@ test_rwlock (void)
-   /* Wait for the threads to terminate.  */
-   for (i = 0; i < THREAD_COUNT; i++)
-     gl_thread_join (threads[i], NULL);
--  rwlock_checker_done = 1;
-+  set_atomic_int_value (&rwlock_checker_done, 1);
-   for (i = 0; i < THREAD_COUNT; i++)
-     gl_thread_join (checkerthreads[i], NULL);
-   check_accounts ();
-@@ -356,12 +410,12 @@ reclock_mutator_thread (void *arg)
-   return NULL;
- }
- 
--static volatile int reclock_checker_done;
-+static struct atomic_int reclock_checker_done;
- 
- static void *
- reclock_checker_thread (void *arg)
- {
--  while (!reclock_checker_done)
-+  while (get_atomic_int_value (&reclock_checker_done) == 0)
-     {
-       dbgprintf ("Checker %p before check lock\n", gl_thread_self_pointer ());
-       gl_recursive_lock_lock (my_reclock);
-@@ -386,7 +440,8 @@ test_recursive_lock (void)
-   /* Initialization.  */
-   for (i = 0; i < ACCOUNT_COUNT; i++)
-     account[i] = 1000;
--  reclock_checker_done = 0;
-+  init_atomic_int (&reclock_checker_done);
-+  set_atomic_int_value (&reclock_checker_done, 0);
- 
-   /* Spawn the threads.  */
-   checkerthread = gl_thread_create (reclock_checker_thread, NULL);
-@@ -396,7 +451,7 @@ test_recursive_lock (void)
-   /* Wait for the threads to terminate.  */
-   for (i = 0; i < THREAD_COUNT; i++)
-     gl_thread_join (threads[i], NULL);
--  reclock_checker_done = 1;
-+  set_atomic_int_value (&reclock_checker_done, 1);
-   gl_thread_join (checkerthread, NULL);
-   check_accounts ();
- }