Hi Takashi, On 5/14/2025 5:29 AM, Takashi Yano via Cygwin wrote:
Hi Ken,I encountered the problem with fifo. The following STC hangs in cygwin while it works in linux. Perhaps, cygheap->fdtab.lock() causes a deadlock between both open(). Could you please take a look? #include <unistd.h> #include <pthread.h> #include <sys/stat.h> #include <fcntl.h> #define fifo1 "/tmp/fifo-test" void *thr1(void *) { int fd; usleep(100000); fd = open(fifo1, O_WRONLY); write(fd, "A", 1); usleep(100000); close(fd); return NULL; } int main() { int fd; pthread_t th; char c; mkfifo(fifo1, 0600); pthread_create(&th, NULL, thr1, NULL); fd = open(fifo1, O_RDONLY); pthread_join(th, NULL); read(fd, &c, 1); write(1, &c, 1); close(fd); return 0; }
Thanks for the STC. I can reproduce the problem. I'll take a look. Ken -- Problem reports: https://cygwin.com/problems.html FAQ: https://cygwin.com/faq/ Documentation: https://cygwin.com/docs.html Unsubscribe info: https://cygwin.com/ml/#unsubscribe-simple
