Merging upstream version 1.37.0.

Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>

1 files changed, 35 insertions, 27 deletions

diff --git a/libnetdata/locks/locks.h b/libnetdata/locks/locks.h
index 796b53c6d..4d2d1655c 100644
--- a/libnetdata/locks/locks.h
+++ b/libnetdata/locks/locks.h
@@ -9,6 +9,14 @@
 typedef pthread_mutex_t netdata_mutex_t;
 #define NETDATA_MUTEX_INITIALIZER PTHREAD_MUTEX_INITIALIZER
 
+typedef struct netdata_spinlock {
+    bool locked;
+} SPINLOCK;
+#define NETDATA_SPINLOCK_INITIALIZER (SPINLOCK){ .locked = false }
+void netdata_spinlock_init(SPINLOCK *spinlock);
+void netdata_spinlock_lock(SPINLOCK *spinlock);
+void netdata_spinlock_unlock(SPINLOCK *spinlock);
+
 #ifdef NETDATA_TRACE_RWLOCKS
 typedef struct netdata_rwlock_locker {
     pid_t pid;
@@ -51,38 +59,38 @@ typedef struct netdata_rwlock_t {
 
 #endif // NETDATA_TRACE_RWLOCKS
 
-extern int __netdata_mutex_init(netdata_mutex_t *mutex);
-extern int __netdata_mutex_destroy(netdata_mutex_t *mutex);
-extern int __netdata_mutex_lock(netdata_mutex_t *mutex);
-extern int __netdata_mutex_trylock(netdata_mutex_t *mutex);
-extern int __netdata_mutex_unlock(netdata_mutex_t *mutex);
+int __netdata_mutex_init(netdata_mutex_t *mutex);
+int __netdata_mutex_destroy(netdata_mutex_t *mutex);
+int __netdata_mutex_lock(netdata_mutex_t *mutex);
+int __netdata_mutex_trylock(netdata_mutex_t *mutex);
+int __netdata_mutex_unlock(netdata_mutex_t *mutex);
 
-extern int __netdata_rwlock_destroy(netdata_rwlock_t *rwlock);
-extern int __netdata_rwlock_init(netdata_rwlock_t *rwlock);
-extern int __netdata_rwlock_rdlock(netdata_rwlock_t *rwlock);
-extern int __netdata_rwlock_wrlock(netdata_rwlock_t *rwlock);
-extern int __netdata_rwlock_unlock(netdata_rwlock_t *rwlock);
-extern int __netdata_rwlock_tryrdlock(netdata_rwlock_t *rwlock);
-extern int __netdata_rwlock_trywrlock(netdata_rwlock_t *rwlock);
+int __netdata_rwlock_destroy(netdata_rwlock_t *rwlock);
+int __netdata_rwlock_init(netdata_rwlock_t *rwlock);
+int __netdata_rwlock_rdlock(netdata_rwlock_t *rwlock);
+int __netdata_rwlock_wrlock(netdata_rwlock_t *rwlock);
+int __netdata_rwlock_unlock(netdata_rwlock_t *rwlock);
+int __netdata_rwlock_tryrdlock(netdata_rwlock_t *rwlock);
+int __netdata_rwlock_trywrlock(netdata_rwlock_t *rwlock);
 
-extern void netdata_thread_disable_cancelability(void);
-extern void netdata_thread_enable_cancelability(void);
+void netdata_thread_disable_cancelability(void);
+void netdata_thread_enable_cancelability(void);
 
 #ifdef NETDATA_TRACE_RWLOCKS
 
-extern int netdata_mutex_init_debug( const char *file, const char *function, const unsigned long line, netdata_mutex_t *mutex);
-extern int netdata_mutex_destroy_debug( const char *file, const char *function, const unsigned long line, netdata_mutex_t *mutex);
-extern int netdata_mutex_lock_debug( const char *file, const char *function, const unsigned long line, netdata_mutex_t *mutex);
-extern int netdata_mutex_trylock_debug( const char *file, const char *function, const unsigned long line, netdata_mutex_t *mutex);
-extern int netdata_mutex_unlock_debug( const char *file, const char *function, const unsigned long line, netdata_mutex_t *mutex);
-
-extern int netdata_rwlock_destroy_debug( const char *file, const char *function, const unsigned long line, netdata_rwlock_t *rwlock);
-extern int netdata_rwlock_init_debug( const char *file, const char *function, const unsigned long line, netdata_rwlock_t *rwlock);
-extern int netdata_rwlock_rdlock_debug( const char *file, const char *function, const unsigned long line, netdata_rwlock_t *rwlock);
-extern int netdata_rwlock_wrlock_debug( const char *file, const char *function, const unsigned long line, netdata_rwlock_t *rwlock);
-extern int netdata_rwlock_unlock_debug( const char *file, const char *function, const unsigned long line, netdata_rwlock_t *rwlock);
-extern int netdata_rwlock_tryrdlock_debug( const char *file, const char *function, const unsigned long line, netdata_rwlock_t *rwlock);
-extern int netdata_rwlock_trywrlock_debug( const char *file, const char *function, const unsigned long line, netdata_rwlock_t *rwlock);
+int netdata_mutex_init_debug( const char *file, const char *function, const unsigned long line, netdata_mutex_t *mutex);
+int netdata_mutex_destroy_debug( const char *file, const char *function, const unsigned long line, netdata_mutex_t *mutex);
+int netdata_mutex_lock_debug( const char *file, const char *function, const unsigned long line, netdata_mutex_t *mutex);
+int netdata_mutex_trylock_debug( const char *file, const char *function, const unsigned long line, netdata_mutex_t *mutex);
+int netdata_mutex_unlock_debug( const char *file, const char *function, const unsigned long line, netdata_mutex_t *mutex);
+
+int netdata_rwlock_destroy_debug( const char *file, const char *function, const unsigned long line, netdata_rwlock_t *rwlock);
+int netdata_rwlock_init_debug( const char *file, const char *function, const unsigned long line, netdata_rwlock_t *rwlock);
+int netdata_rwlock_rdlock_debug( const char *file, const char *function, const unsigned long line, netdata_rwlock_t *rwlock);
+int netdata_rwlock_wrlock_debug( const char *file, const char *function, const unsigned long line, netdata_rwlock_t *rwlock);
+int netdata_rwlock_unlock_debug( const char *file, const char *function, const unsigned long line, netdata_rwlock_t *rwlock);
+int netdata_rwlock_tryrdlock_debug( const char *file, const char *function, const unsigned long line, netdata_rwlock_t *rwlock);
+int netdata_rwlock_trywrlock_debug( const char *file, const char *function, const unsigned long line, netdata_rwlock_t *rwlock);
 
 #define netdata_mutex_init(mutex)    netdata_mutex_init_debug(__FILE__, __FUNCTION__, __LINE__, mutex)
 #define netdata_mutex_destroy(mutex) netdata_mutex_init_debug(__FILE__, __FUNCTION__, __LINE__, mutex)