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Memory-mapped process data.

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This commit is contained in:
Florian Pose
2008-10-10 08:34:15 +00:00
parent ffe107b658
commit 4e6e86c808
9 changed files with 329 additions and 46 deletions
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lib/common.c
+8
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@@ -39,6 +39,7 @@
#include <errno.h>
#include <string.h>
#include <sys/ioctl.h>
#include <sys/mman.h>
#include "master.h"
#include "master/ioctl.h"
@@ -65,6 +66,9 @@ ec_master_t *ecrt_request_master(unsigned int master_index)
return 0;
}
master->process_data = NULL;
master->process_data_size = 0;
snprintf(path, MAX_PATH_LEN - 1, "/dev/EtherCAT%u", master_index);
master->fd = open(path, O_RDWR);
@@ -89,6 +93,10 @@ ec_master_t *ecrt_request_master(unsigned int master_index)
void ecrt_release_master(ec_master_t *master)
{
if (master->process_data) {
munmap(master->process_data, master->process_data_size);
}
close(master->fd);
free(master);
}