Added checks for malloc_trim() as it is GNU extension.

refs #187

configure.ac

@@ -325,7 +325,7 @@ AC_TYPE_SIZE_T
 AC_TYPE_SSIZE_T
 
 # Checks for library functions.
-AC_CHECK_FUNCS([clock_gettime gettimeofday fgetln getline madvise poll posix_memalign pselect pthread_setaffinity_np regcomp select setgroups initgroups])
+AC_CHECK_FUNCS([clock_gettime gettimeofday fgetln getline madvise malloc_trim poll posix_memalign pselect pthread_setaffinity_np regcomp select setgroups initgroups])
 
 # Check for be64toh function
 AC_LINK_IFELSE([AC_LANG_PROGRAM([[#include <endian.h>]], [[return be64toh(0);]])],

src/common/mempattern.c

@@ -20,6 +20,7 @@
 #include <string.h>
 #include <sys/resource.h>
 #include <stdarg.h>
+#include <malloc.h>
 
 #include "common/mempattern.h"
 #include "common/log.h"
@@ -172,3 +173,11 @@ void usage_dump()
 	        usage.ru_nivcsw);
 	fprintf(stderr, "==================\n");
 }
+
+/*! \brief Trim excess heap memory. */
+void mem_trim(void)
+{
+#ifdef HAVE_MALLOC_TRIM
+	malloc_trim(0);
+#endif
+}

src/common/mempattern.h

@@ -28,7 +28,6 @@
 #define _KNOTD_COMMON_MALLOC_H_
 
 #include <stddef.h>
-#include <malloc.h>
 
 /* Memory allocation function prototypes. */
 typedef void* (*mm_alloc_t)(void* ctx, size_t len);
@@ -112,10 +111,7 @@ char* strcdup(const char *s1, const char *s2);
 void usage_dump();
 
 /*! \brief Trim excess heap memory. */
-static inline void mem_trim(void)
-{
-	malloc_trim(0);
-}
+void mem_trim(void);
 
 #endif // _KNOTD_COMMON_MALLOC_H_