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Replace getdtablesize() with sysconf(_SC_OPEN_MAX)

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From http://man7.org/linux/man-pages/man3/getdtablesize.3.html:

"It is not specified in POSIX.1; portable applications should employ
sysconf(_SC_OPEN_MAX) instead of this call."

Specifically this fixes a build failure on Android which does not
have getdtablesize().

Signed-off-by: Fredrik Fornwall <fredrik@fornwall.net>
This commit is contained in:
Fredrik Fornwall 2017-07-16 17:11:04 +02:00 committed by Roger Light
parent 8de5ed4464
commit 366194cde4
1 changed files with 2 additions and 1 deletions
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3
src/loop.c
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@ -21,6 +21,7 @@ Contributors:
#include <assert.h>
#ifndef WIN32
#include <poll.h>
#include <unistd.h>
#else
#include <process.h>
#include <winsock2.h>
@ -126,7 +127,7 @@ int mosquitto_main_loop(struct mosquitto_db *db, mosq_sock_t *listensock, int li
#ifdef WIN32
pollfd_max = _getmaxstdio();
#else
pollfd_max = getdtablesize();
pollfd_max = sysconf(_SC_OPEN_MAX);
#endif
pollfds = _mosquitto_malloc(sizeof(struct pollfd)*pollfd_max);