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apps/examples/tcpblaster: Add an option to use poll() to pace input or output.

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This commit is contained in:
Gregory Nutt 2018-09-10 12:13:18 -06:00
parent c8f473c507
commit 25c2756a82
3 changed files with 70 additions and 0 deletions
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20
examples/tcpblaster/Kconfig
View File

@ -35,6 +35,26 @@ config EXAMPLES_TCPBLASTER_PRIORITY1
int "Target1 priority"
default 100
config EXAMPLES_TCPBLASTER_POLLOUT
bool "Use poll() to pace output"
default n
depends on !DISABLE_POLL
---help---
Client will use poll() to verify that send() will not block. This
does not improve performance (in fact, it will degrade perform
slightly). But it is useful for verifying that poll() can be used
to pace output.
config EXAMPLES_TCPBLASTER_POLLIN
bool "Use poll() to pace input"
default n
depends on !DISABLE_POLL
---help---
Client will use poll() to verify that recv() will not block. This
does not improve performance (in fact, it will degrade perform
slightly). But it is useful for verifying that poll() can be used
to pace input.
config EXAMPLES_TCPBLASTER_LOOPBACK
bool "Loopback test"
default n

25
examples/tcpblaster/tcpblaster_client.c
View File

@ -46,6 +46,7 @@
#include <stdlib.h>
#include <unistd.h>
#include <time.h>
#include <poll.h>
#include <string.h>
#include <errno.h>
@ -147,6 +148,30 @@ void tcpblaster_client(void)
for (; ; )
{
#ifdef CONFIG_EXAMPLES_TCPBLASTER_POLLOUT
struct pollfd fds[1];
int ret;
memset(fds, 0, 1 * sizeof(struct pollfd));
fds[0].fd = sockfd;
fds[0].events = POLLOUT | POLLHUP;
/* Wait until we can send data or until the connection is lost */
ret = poll(fds, 1, -1);
if (ret < 0)
{
printf("client: ERROR poll failed: %d\n", errno);
goto errout_with_socket;
}
if ((fds[0].revents & POLLHUP) != 0)
{
printf("client: WARNING poll returned POLLHUP\n");
goto errout_with_socket;
}
#endif
nbytessent = send(sockfd, outbuf, SENDSIZE, 0);
if (nbytessent < 0)
{

25
examples/tcpblaster/tcpblaster_server.c
View File

@ -41,6 +41,7 @@
#include <sys/types.h>
#include <sys/socket.h>
#include <poll.h>
#include <netinet/in.h>
#include <stdio.h>
@ -187,6 +188,30 @@ void tcpblaster_server(void)
for (; ; )
{
#ifdef CONFIG_EXAMPLES_TCPBLASTER_POLLIN
struct pollfd fds[1];
int ret;
memset(fds, 0, 1 * sizeof(struct pollfd));
fds[0].fd = acceptsd;
fds[0].events = POLLIN | POLLHUP;
/* Wait until we can receive data or until the connection is lost */
ret = poll(fds, 1, -1);
if (ret < 0)
{
printf("server: ERROR poll failed: %d\n", errno);
goto errout_with_acceptsd;
}
if ((fds[0].revents & POLLHUP) != 0)
{
printf("server: WARNING poll returned POLLHUP\n");
goto errout_with_acceptsd;
}
#endif
nbytesread = recv(acceptsd, buffer, SENDSIZE, 0);
if (nbytesread < 0)
{