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optimize SystemExec::output_interposer()

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This commit is contained in:
Robin Gareus 2014-07-06 23:44:48 +02:00
parent cabed6ffce
commit 4b0933938f
1 changed files with 10 additions and 1 deletions
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11
libs/pbd/system_exec.cc
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@ -867,7 +867,16 @@ SystemExec::output_interposer()
for (;fcntl(rfd, F_GETFL)!=-1;) { for (;fcntl(rfd, F_GETFL)!=-1;) {
r = read(rfd, buf, sizeof(buf)); r = read(rfd, buf, sizeof(buf));
if (r < 0 && (errno == EINTR || errno == EAGAIN)) { if (r < 0 && (errno == EINTR || errno == EAGAIN)) {
::usleep(1000); fd_set rfds;
struct timeval tv;
FD_ZERO(&rfds);
FD_SET(rfd, &rfds);
tv.tv_sec = 0;
tv.tv_usec = 10000;
int rv = select(1, &rfds, NULL, NULL, &tv);
if (rv == -1) {
break;
}
continue; continue;
} }
if (r <= 0) { if (r <= 0) {