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MINOR: compat: automatically include malloc.h on glibc

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This is in order to access malloc_trim() which is convenient after
clearing huge maps to reclaim memory. When this is detected, we also
define HA_HAVE_MALLOC_TRIM.
This commit is contained in:
Willy Tarreau 2020-11-03 15:50:40 +01:00
parent 32186472cb
commit 1d3c7003d9
1 changed files with 9 additions and 0 deletions
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9
include/haproxy/compat.h
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@ -240,6 +240,15 @@ typedef struct { } empty_t;
#endif
#endif
/* malloc_trim() can be very convenient to reclaim unused memory especially
* from huge pattern files. It's available (and really usable) in glibc 2.8 and
* above.
*/
#if (defined(__GNU_LIBRARY__) && (__GLIBC__ > 2 || __GLIBC__ == 2 && __GLIBC_MINOR__ >= 8))
#include <malloc.h>
#define HA_HAVE_MALLOC_TRIM
#endif
/* Max number of file descriptors we send in one sendmsg(). Linux seems to be
* able to send 253 fds per sendmsg(), not sure about the other OSes.
*/