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authorEric Andersen <andersen@codepoet.org>2004-10-07 02:18:56 +0000
committerEric Andersen <andersen@codepoet.org>2004-10-07 02:18:56 +0000
commitd91c24070b00c1b9d3ae877554d43276d1fcd04f (patch)
tree880b83ce48aba85f889efb6ed1f5ec8822f0699d
parent6685267a72235d5384bd401ba990bc805fac8aac (diff)
implement SuSv3 required ualarm()
-rw-r--r--libc/unistd/ualarm.c19
1 files changed, 19 insertions, 0 deletions
diff --git a/libc/unistd/ualarm.c b/libc/unistd/ualarm.c
new file mode 100644
index 000000000..207a47298
--- /dev/null
+++ b/libc/unistd/ualarm.c
@@ -0,0 +1,19 @@
+#define _GNU_SOURCE
+#include <time.h>
+#include <sys/time.h>
+#include <sys/types.h>
+#include <unistd.h>
+
+useconds_t ualarm(useconds_t value, useconds_t interval)
+{
+ struct itimerval otimer;
+ const struct itimerval itimer = {
+ { 0, interval },
+ { 0, value}
+ };
+
+ if (setitimer(ITIMER_REAL, &itimer, &otimer) < 0) {
+ return -1;
+ }
+ return((otimer.it_value.tv_sec * 1000000) + otimer.it_value.tv_usec);
+}