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[PATCH 1/6] RTEMS: Optimize pthread_once_t
- From: Sebastian Huber <sebastian dot huber at embedded-brains dot de>
- To: newlib at sourceware dot org
- Date: Thu, 5 Oct 2017 14:55:53 +0200
- Subject: [PATCH 1/6] RTEMS: Optimize pthread_once_t
- Authentication-results: sourceware.org; auth=none
Reduce size of pthread_once_t and make it zero-initialized.
Signed-off-by: Sebastian Huber <sebastian.huber@embedded-brains.de>
---
newlib/libc/sys/rtems/include/machine/_threads.h | 5 ++---
newlib/libc/sys/rtems/include/sys/_pthreadtypes.h | 8 ++++----
2 files changed, 6 insertions(+), 7 deletions(-)
diff --git a/newlib/libc/sys/rtems/include/machine/_threads.h b/newlib/libc/sys/rtems/include/machine/_threads.h
index 24db21c0e..5faa78f46 100644
--- a/newlib/libc/sys/rtems/include/machine/_threads.h
+++ b/newlib/libc/sys/rtems/include/machine/_threads.h
@@ -41,12 +41,11 @@ typedef __uint32_t tss_t;
/* pthread_once_t */
typedef struct {
- int _is_initialized;
- int _init_executed;
+ unsigned char _flags;
} once_flag;
/* PTHREAD_ONCE_INIT */
-#define ONCE_FLAG_INIT { 1, 0 }
+#define ONCE_FLAG_INIT { 0 }
/* PTHREAD_DESTRUCTOR_ITERATIONS */
#define TSS_DTOR_ITERATIONS 4
diff --git a/newlib/libc/sys/rtems/include/sys/_pthreadtypes.h b/newlib/libc/sys/rtems/include/sys/_pthreadtypes.h
index bd66c689e..9db50fe44 100644
--- a/newlib/libc/sys/rtems/include/sys/_pthreadtypes.h
+++ b/newlib/libc/sys/rtems/include/sys/_pthreadtypes.h
@@ -169,11 +169,11 @@ typedef struct {
typedef __uint32_t pthread_key_t; /* thread-specific data keys */
typedef struct {
- int is_initialized; /* is this structure initialized? */
- int init_executed; /* has the initialization routine been run? */
-} pthread_once_t; /* dynamic package initialization */
+ unsigned char _flags;
+} pthread_once_t;
+
+#define _PTHREAD_ONCE_INIT { 0 }
-#define _PTHREAD_ONCE_INIT { 1, 0 } /* is initialized and not run */
#endif /* defined(_POSIX_THREADS) */
/* POSIX Barrier Types */
--
2.12.3