Merge branch 'np/malloc-threading' into maint

* np/malloc-threading:
  Thread-safe xmalloc and xrealloc needs a recursive mutex
  Make xmalloc and xrealloc thread-safe

1 files changed, 16 insertions, 0 deletions

diff --git a/thread-utils.c b/thread-utils.c
index 4f9c829c2d..589f838f82 100644
--- a/thread-utils.c
+++ b/thread-utils.c
@@ -1,4 +1,5 @@
 #include "cache.h"
+#include <pthread.h>
 
 #if defined(hpux) || defined(__hpux) || defined(_hpux)
 #  include <sys/pstat.h>
@@ -43,3 +44,18 @@ int online_cpus(void)
 
 	return 1;
 }
+
+int init_recursive_mutex(pthread_mutex_t *m)
+{
+	pthread_mutexattr_t a;
+	int ret;
+
+	ret = pthread_mutexattr_init(&a);
+	if (!ret) {
+		ret = pthread_mutexattr_settype(&a, PTHREAD_MUTEX_RECURSIVE);
+		if (!ret)
+			ret = pthread_mutex_init(m, &a);
+		pthread_mutexattr_destroy(&a);
+	}
+	return ret;
+}