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Wait longer for messages to arrive in the queue #86

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Wait longer for messages to arrive in the queue #86

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355af02
Wait up to a second to pickup the message after trapping the SIGURG.
mdkent Jul 29, 2021
4d21dbe
Only wait when necessary.
mdkent Jul 29, 2021
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7 changes: 6 additions & 1 deletion ext/rbtrace.c
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Original file line number Diff line number Diff line change
@@ -1,3 +1,5 @@
#define _POSIX_C_SOURCE 199309L

#include <assert.h>
#include <inttypes.h>
#include <errno.h>
Expand Down Expand Up @@ -1062,8 +1064,11 @@ rbtrace__receive(void *data)
while (true) {
int ret = -1;

for (n=0; n<10 && ret==-1; n++)
// wait up to a second for the message to arrive
for (n=0; n<10 && ret==-1; n++) {
ret = msgrcv(rbtracer.mqi_id, &msg, sizeof(msg)-sizeof(long), 0, IPC_NOWAIT);
if (ret == -1) nanosleep((const struct timespec[]){{0, (100 % 1000) * 1000000}}, NULL); // 100ms
}

if (ret == -1) {
break;
Expand Down