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-rw-r--r--main/musl/0001-manually-shrink-wrap-fast-path-in-pthread_once.patch53
1 files changed, 0 insertions, 53 deletions
diff --git a/main/musl/0001-manually-shrink-wrap-fast-path-in-pthread_once.patch b/main/musl/0001-manually-shrink-wrap-fast-path-in-pthread_once.patch
deleted file mode 100644
index b0e38d8441..0000000000
--- a/main/musl/0001-manually-shrink-wrap-fast-path-in-pthread_once.patch
+++ /dev/null
@@ -1,53 +0,0 @@
-From dc95322e18615392eea69de355edd735a15a8f36 Mon Sep 17 00:00:00 2001
-From: Rich Felker <dalias@aerifal.cx>
-Date: Mon, 20 Oct 2014 00:22:51 -0400
-Subject: [PATCH] manually "shrink wrap" fast path in pthread_once
-
-this change is a workaround for the inability of current compilers to
-perform "shrink wrapping" optimizations. in casual testing, it roughly
-doubled the performance of pthread_once when called on an
-already-finished once control object.
----
- src/thread/pthread_once.c | 20 ++++++++++++--------
- 1 file changed, 12 insertions(+), 8 deletions(-)
-
-diff --git a/src/thread/pthread_once.c b/src/thread/pthread_once.c
-index 7c47385..df655ef 100644
---- a/src/thread/pthread_once.c
-+++ b/src/thread/pthread_once.c
-@@ -8,15 +8,8 @@ static void undo(void *control)
- __wake(control, -1, 1);
- }
-
--int __pthread_once(pthread_once_t *control, void (*init)(void))
-+int __pthread_once_full(pthread_once_t *control, void (*init)(void))
- {
-- /* Return immediately if init finished before, but ensure that
-- * effects of the init routine are visible to the caller. */
-- if (*control == 2) {
-- a_barrier();
-- return 0;
-- }
--
- /* Try to enter initializing state. Four possibilities:
- * 0 - we're the first or the other cancelled; run init
- * 1 - another thread is running init; wait
-@@ -43,4 +36,15 @@ int __pthread_once(pthread_once_t *control, void (*init)(void))
- }
- }
-
-+int __pthread_once(pthread_once_t *control, void (*init)(void))
-+{
-+ /* Return immediately if init finished before, but ensure that
-+ * effects of the init routine are visible to the caller. */
-+ if (*control == 2) {
-+ a_barrier();
-+ return 0;
-+ }
-+ return __pthread_once_full(control, init);
-+}
-+
- weak_alias(__pthread_once, pthread_once);
---
-2.2.0
-