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kernel: add fifo polling test from #7859

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This commit is contained in:
Philippe Houdoin 2017-08-01 18:50:36 +00:00
parent 17f88a29db
commit 12b5c184b2
2 changed files with 34 additions and 0 deletions
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2
src/tests/system/kernel/Jamfile
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@ -11,6 +11,8 @@ SimpleTest fibo_load_image : fibo_load_image.cpp ;
SimpleTest fibo_fork : fibo_fork.cpp ;
SimpleTest fibo_exec : fibo_exec.cpp ;
SimpleTest fifo_poll_test : fifo_poll_test.cpp ;
SimpleTest live_query :
live_query.cpp
: be

32
src/tests/system/kernel/fifo_poll_test.cpp Normal file
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@ -0,0 +1,32 @@
#include <stdio.h>
#include <poll.h>
int main() {
FILE* f = popen("/bin/bash -c 'for i in 1 2 3; do { echo $i; sleep 1; }; done'", "r");
printf("f=%p\n", f);
int fd = fileno(f);
printf("fd=%d\n", fd);
struct pollfd pfd;
pfd.fd = fd;
pfd.events = POLLIN | POLLRDBAND;
char buffer[80];
while (1) {
int rv = poll(&pfd, 1, 500);
printf("rv=%d\n", rv);
if (rv == 0)
continue;
if (rv < 0)
break;
printf("events=%08x revents=%08x\n", pfd.events, pfd.revents);
if ((pfd.events & pfd.revents) == 0)
break;
fgets(buffer, 79, f);
printf("output: %s", buffer);
}
return 0;
}