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Proper reimplementation of C++11 thread event signaling and the network code now uses an atomic instead of mutexes for wait.

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This commit is contained in:
OBattler
2021-12-17 18:48:13 +01:00
parent 153ac6df9a
commit 9c7a3477aa
3 changed files with 20 additions and 19 deletions
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8
src/network/net_pcap.c
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@@ -172,6 +172,7 @@ poll_thread(void *arg)
thread_set_event(poll_state);
/* Create a waitable event. */
pcap_log("PCAP: Creating event...\n");
evt = thread_create_event();
/* As long as the channel is open.. */
@@ -185,8 +186,6 @@ poll_thread(void *arg)
if (pcap == NULL)
break;
/* Wait for the next packet to arrive. */
tx = network_tx_queue_check();
if (network_get_wait() || (poll_card->set_link_state && poll_card->set_link_state(poll_card->priv)) || (poll_card->wait && poll_card->wait(poll_card->priv)))
data = NULL;
else
@@ -208,11 +207,14 @@ poll_thread(void *arg)
}
}
/* Wait for the next packet to arrive. */
tx = network_tx_queue_check();
if (tx)
network_do_tx();
/* If we did not get anything, wait a while. */
if ((data == NULL) && !tx)
if (!tx)
thread_wait_event(evt, 10);
/* Release ownership of the device. */

9
src/network/network.c
View File

@@ -49,6 +49,7 @@
* OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*/
#include <stdarg.h>
#include <stdatomic.h>
#include <stdint.h>
#include <stdio.h>
#include <string.h>
@@ -107,7 +108,7 @@ int nic_do_log = ENABLE_NIC_LOG;
/* Local variables. */
static volatile int net_wait = 0;
static volatile atomic_int net_wait = 0;
static mutex_t *network_mutex;
static uint8_t *network_mac;
static uint8_t network_timer_active = 0;
@@ -388,8 +389,8 @@ network_attach(void *dev, uint8_t *mac, NETRXCB rx, NETWAITCB wait, NETSETLINKST
network_set_wait(0);
/* Create the network events. */
poll_data.wake_poll_thread = thread_create_event();
poll_data.poll_complete = thread_create_event();
poll_data.wake_poll_thread = thread_create_event();
/* Activate the platform module. */
switch(network_type) {
@@ -671,9 +672,7 @@ network_card_get_from_internal_name(char *s)
void
network_set_wait(int wait)
{
network_wait(1);
net_wait = wait;
network_wait(0);
}
@@ -682,8 +681,6 @@ network_get_wait(void)
{
int ret;
network_wait(1);
ret = net_wait;
network_wait(0);
return ret;
}