From e51a0230e154d65226ca3ff144eaaafcc3074dae Mon Sep 17 00:00:00 2001
From: Marius Tolzmann <tolzmann@molgen.mpg.de>
Date: Fri, 15 May 2015 13:33:44 +0200
Subject: [PATCH] mx_util: Add mx_calloc*()

---
 mx_util.c | 17 +++++++++++++++++
 mx_util.h |  8 ++++++++
 2 files changed, 25 insertions(+)

diff --git a/mx_util.c b/mx_util.c
index 14741ba..0829ae9 100644
--- a/mx_util.c
+++ b/mx_util.c
@@ -607,3 +607,20 @@ int mx_sleep_nofail(unsigned int seconds)
     mx_sleep(seconds);
     return 1;
 }
+
+void *mx_calloc_forever_sec(size_t nmemb, size_t size, unsigned int time)
+{
+    void *ptr;
+
+    while (1) {
+        ptr = calloc(nmemb, size);
+        if (ptr)
+            break;
+
+        mx_log_debug("calloc() failed: %m - retrying (forever) in %d second(s).", time);
+        if (time)
+            mx_sleep(time);
+    }
+
+    return ptr;
+}
diff --git a/mx_util.h b/mx_util.h
index 63af526..9fac460 100644
--- a/mx_util.h
+++ b/mx_util.h
@@ -96,4 +96,12 @@ int mx_open_newfile(char *fname);
 int mx_sleep(unsigned int seconds);
 int mx_sleep_nofail(unsigned int seconds);
 
+#ifndef MX_CALLOC_FAIL_WAIT_DEFAULT
+#   define MX_CALLOC_FAIL_WAIT_DEFAULT 1
+#endif
+
+#define mx_calloc_forever(n, s) mx_calloc_forever_sec((n), (s), MX_CALLOC_FAIL_WAIT_DEFAULT)
+
+void *mx_calloc_forever_sec(size_t nmemb, size_t size, unsigned int time);
+
 #endif