diff options
Diffstat (limited to 'TOOLS')
-rw-r--r-- | TOOLS/blocking.c | 47 |
1 files changed, 47 insertions, 0 deletions
diff --git a/TOOLS/blocking.c b/TOOLS/blocking.c new file mode 100644 index 0000000000..d7fb6aaf83 --- /dev/null +++ b/TOOLS/blocking.c @@ -0,0 +1,47 @@ +#include <stdio.h> +#include <stdlib.h> +#include <sys/time.h> +#include <sys/types.h> +#include <unistd.h> +#include <sys/stat.h> +#include <fcntl.h> + +#define BUFFSIZE (32*65536) + +unsigned char *buffer[1]; + +int main(int argc,char* argv[]){ + + fd_set rfds; + struct timeval tv; + int retval; + int in_fd=0; // stdin + + buffer[0]=malloc(BUFFSIZE); + + if(argc>1) in_fd=open(argv[1],O_RDONLY|O_NONBLOCK); + +while(1){ + FD_ZERO(&rfds); FD_SET(in_fd, &rfds); + tv.tv_sec = 1; + tv.tv_usec = 0; + retval = select(in_fd+1, &rfds, NULL, NULL, &tv); + + if (retval){ + if(FD_ISSET(in_fd, &rfds)){ + // we can read input. + int len; + fprintf(stderr,"r");fflush(stderr); + len=read(in_fd,buffer[0],BUFFSIZE); + fprintf(stderr,"(%d)",len);fflush(stderr); + } + } else { + fprintf(stderr,".");fflush(stderr); + } + + fprintf(stderr,"\n");fflush(stderr); +} + +return 0; +} + |