721 lines
20 KiB
C
721 lines
20 KiB
C
/* Raw HID I/O Routines
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* Copyright 2008, PJRC.COM, LLC
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* paul@pjrc.com
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*
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* You may redistribute this program and/or modify it under the terms
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* of the GNU General Public License as published by the Free Software
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* Foundation, either version 3 of the License, or (at your option)
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* any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program. If not, see http://www.gnu.org/licenses/
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*/
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// This code will someday be turned into "librawhid", an easy-to-use
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// and truly cross platform library for accessing HID reports. But
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// there are many complexities not properly handled by this simple
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// code that would be expected from a high quality library. In
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// particular, how report IDs are handled is not uniform on the 3
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// platforms. The mac code uses a single buffer which assumes no
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// other functions can cause the "run loop" to process HID callbacks.
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// The linux version doesn't extract usage and usage page from the
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// report descriptor and just hardcodes a signature for the Teensy
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// USB debug example. Lacking from all platforms are functions to
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// manage multiple devices and robust detection of device removal
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// and attachment. There are probably lots of other issues... this
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// code has really only been used in 2 projects. If you use it,
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// please report bugs to paul@pjrc.com
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#include <stdio.h>
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#include <stdlib.h>
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#include <stdint.h>
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#include <string.h>
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#include "rawhid.h"
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#ifdef OPERATING_SYSTEM
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#undef OPERATING_SYSTEM
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#endif
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/*************************************************************************/
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/** **/
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/** Linux **/
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/** **/
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/*************************************************************************/
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#if defined(LINUX) || defined(__LINUX__) || #system(linux)
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#define OPERATING_SYSTEM linux
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#include <fcntl.h>
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#include <errno.h>
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#include <unistd.h>
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#include <sys/types.h>
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#include <sys/stat.h>
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#include <sys/ioctl.h>
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#include <linux/hidraw.h>
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struct rawhid_struct {
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int fd;
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int name;
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int isok;
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};
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rawhid_t * rawhid_open_only1(int vid, int pid, int usage_page, int usage)
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{
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struct rawhid_struct *hid;
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struct stat devstat;
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struct hidraw_devinfo info;
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struct hidraw_report_descriptor *desc;
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char buf[512];
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// TODO; inputs are ignored and hardcoded into this signature....
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const unsigned char signature[]={0x06,0x31,0xFF,0x09,0x74};
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int r, i, fd=-1, len, found=0;
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//printf("Searching for device using hidraw....\n");
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for (i=0; i<HIDRAW_MAX_DEVICES; i++) {
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if (fd > 0) close(fd);
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snprintf(buf, sizeof(buf), "/dev/hidraw%d", i);
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r = stat(buf, &devstat);
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if (r < 0) continue;
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//printf("device: %s\n", buf);
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fd = open(buf, O_RDWR);
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if (fd < 0) continue;
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//printf(" opened\n");
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r = ioctl(fd, HIDIOCGRAWINFO, &info);
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if (r < 0) continue;
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//printf(" vid=%04X, pid=%04X\n", info.vendor & 0xFFFF, info.product & 0xFFFF);
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r = ioctl(fd, HIDIOCGRDESCSIZE, &len);
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if (r < 0 || len < 1) continue;
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//printf(" len=%u\n", len);
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desc = (struct hidraw_report_descriptor *)buf;
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if (len > sizeof(buf)-sizeof(int)) len = sizeof(buf)-sizeof(int);
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desc->size = len;
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r = ioctl(fd, HIDIOCGRDESC, desc);
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if (r < 0) continue;
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if (len >= sizeof(signature) &&
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memcmp(desc->value, signature, sizeof(signature)) == 0) {
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//printf(" Match\n");
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found = 1;
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break;
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}
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}
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if (!found) {
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if (fd > 0) close(fd);
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return NULL;
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}
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hid = (struct rawhid_struct *)malloc(sizeof(struct rawhid_struct));
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if (!hid) {
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close(fd);
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return NULL;
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}
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hid->fd = fd;
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return hid;
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}
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int rawhid_status(rawhid_t *hid)
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{
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// TODO: how to check if device is still online?
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return -1;
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}
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int rawhid_read(rawhid_t *h, void *buf, int bufsize, int timeout_ms)
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{
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struct rawhid_struct *hid;
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int num;
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hid = (struct rawhid_struct *)h;
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if (!hid || hid->fd < 0) return -1;
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while (1) {
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num = read(hid->fd, buf, bufsize);
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if (num < 0) {
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if (errno == EINTR || errno == EAGAIN) continue;
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if (errno == EIO) {
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return -1;
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printf("I/O Error\n");
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}
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printf("read error, r=%d, errno=%d\n", num, errno);
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return -1;
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}
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//printf("read %d bytes\n", num);
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return num;
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}
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}
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void rawhid_close(rawhid_t *h)
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{
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struct rawhid_struct *hid;
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hid = (struct rawhid_struct *)h;
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if (!hid || hid->fd < 0) return;
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close(hid->fd);
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hid->fd = -1;
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}
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#if 0
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struct rawhid_list_struct {
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int count;
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struct rawhid_list_entry {
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int name;
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int desc_length;
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const char *desc;
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} dev[HIDRAW_MAX_DEVICES];
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};
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rawhid_list_t * rawhid_list_open(int vid, int pid, int usage_page, int usage)
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{
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struct rawhid_list_struct *list;
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struct stat devstat;
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struct hidraw_devinfo info;
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struct hidraw_report_descriptor *desc;
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char buf[512], *p;
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const unsigned char signature[]={0x06,0x31,0xFF,0x09,0x74};
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int r, i, fd=-1, len;
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list = (struct rawhid_list_struct *)malloc(sizeof(struct rawhid_list_struct));
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if (!list) return NULL;
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list->count = 0;
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printf("Searching for device using hidraw....\n");
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for (i=0; i<HIDRAW_MAX_DEVICES; i++) {
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if (fd > 0) close(fd);
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snprintf(buf, sizeof(buf), "/dev/hidraw%d", i);
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r = stat(buf, &devstat);
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if (r < 0) continue;
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printf("device: %s\n", buf);
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fd = open(buf, O_RDWR);
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if (fd < 0) continue;
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printf(" opened\n");
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r = ioctl(fd, HIDIOCGRAWINFO, &info);
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if (r < 0) continue;
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printf(" vid=%04X, pid=%04X\n", info.vendor & 0xFFFF, info.product & 0xFFFF);
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r = ioctl(fd, HIDIOCGRDESCSIZE, &len);
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if (r < 0 || len < 1) continue;
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printf(" len=%u\n", len);
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desc = (struct hidraw_report_descriptor *)buf;
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if (len > sizeof(buf)-sizeof(int)) len = sizeof(buf)-sizeof(int);
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desc->size = len;
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r = ioctl(fd, HIDIOCGRDESC, desc);
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if (r < 0) continue;
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if (len < sizeof(signature)) continue;
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// TODO: actual report parsing would be nice!
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if (memcmp(desc->value, signature, sizeof(signature)) != 0) continue;
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p = (char *)malloc(len);
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if (!p) continue;
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printf(" Match\n");
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memcpy(p, desc->value, len);
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list->dev[list->count].desc = p;
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list->dev[list->count].desc_length = len;
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list->dev[list->count].name = i;
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list->count++;
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}
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if (fd > 0) close(fd);
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return list;
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}
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int rawhid_list_count(rawhid_list_t *list)
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{
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if (!list) return 0;
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return ((struct rawhid_list_struct *)list)->count;
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}
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void rawhid_list_close(rawhid_list_t *list)
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{
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if (list) free(list);
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}
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#endif
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#endif // linux
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/*************************************************************************/
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/** **/
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/** Mac OS X 10.5 **/
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/** **/
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/*************************************************************************/
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#if (defined(DARWIN) || defined(__DARWIN__)) && !defined(OPERATING_SYSTEM)
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#define OPERATING_SYSTEM darwin
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#include <IOKit/IOKitLib.h>
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#include <IOKit/hid/IOHIDLib.h>
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#include <IOKit/hid/IOHIDDevice.h>
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#include <unistd.h>
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// http://developer.apple.com/technotes/tn2007/tn2187.html
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struct rawhid_struct {
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IOHIDDeviceRef ref;
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int disconnected;
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uint8_t *buffer;
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int buffer_used;
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int buffer_report_id;
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};
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static void unplug_callback(void *hid, IOReturn ret, void *ref)
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{
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// This callback can only be called when the "run loop" (managed by macos)
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// is run. If the GUI is running it when idle, this will get called
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// automatically. If not, the run loop needs to be run explicitly
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// before checking the result of this function.
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//printf("HID/macos: unplugged callback!\n");
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((struct rawhid_struct *)hid)->disconnected = 1;
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}
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static void input_callback(void *context, IOReturn result, void *sender,
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IOHIDReportType type, uint32_t reportID, uint8_t *report,
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CFIndex reportLength)
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{
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struct rawhid_struct *hid;
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//printf("input callback\n");
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if (!context) return;
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hid = (struct rawhid_struct *)context;
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hid->buffer_used = reportLength;
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hid->buffer_report_id = reportID;
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//printf("id = %d, reportLength = %d\n", reportID, (int)reportLength);
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//if (hid->ref == sender) printf("ref matches :-)\n");
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//if (report == hid->buffer) printf("buffer matches :)\n");
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}
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rawhid_t * rawhid_open_only1(int vid, int pid, int usage_page, int usage)
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{
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IOHIDManagerRef hid_manager;
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CFMutableDictionaryRef dict;
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IOReturn ret;
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CFSetRef device_set;
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IOHIDDeviceRef device_list[256];
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uint8_t *buf;
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struct rawhid_struct *hid;
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int num_devices;
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// get access to the HID Manager
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hid_manager = IOHIDManagerCreate(kCFAllocatorDefault, kIOHIDOptionsTypeNone);
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if (hid_manager == NULL || CFGetTypeID(hid_manager) != IOHIDManagerGetTypeID()) {
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printf("HID/macos: unable to access HID manager");
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return NULL;
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}
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// configure it to look for our type of device
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dict = IOServiceMatching(kIOHIDDeviceKey);
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if (dict == NULL) {
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printf("HID/macos: unable to create iokit dictionary");
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return NULL;
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}
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if (vid > 0) {
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CFDictionarySetValue(dict, CFSTR(kIOHIDVendorIDKey),
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CFNumberCreate(kCFAllocatorDefault, kCFNumberIntType, &vid));
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}
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if (pid > 0) {
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CFDictionarySetValue(dict, CFSTR(kIOHIDProductIDKey),
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CFNumberCreate(kCFAllocatorDefault, kCFNumberIntType, &pid));
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}
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if (usage_page > 0) {
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CFDictionarySetValue(dict, CFSTR(kIOHIDPrimaryUsagePageKey),
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CFNumberCreate(kCFAllocatorDefault, kCFNumberIntType, &usage_page));
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}
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if (usage > 0) {
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CFDictionarySetValue(dict, CFSTR(kIOHIDPrimaryUsageKey),
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CFNumberCreate(kCFAllocatorDefault, kCFNumberIntType, &usage));
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}
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IOHIDManagerSetDeviceMatching(hid_manager, dict);
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// now open the HID manager
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ret = IOHIDManagerOpen(hid_manager, kIOHIDOptionsTypeNone);
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if (ret != kIOReturnSuccess) {
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printf("HID/macos: Unable to open HID manager (IOHIDManagerOpen failed)");
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return NULL;
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}
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// get a list of devices that match our requirements
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device_set = IOHIDManagerCopyDevices(hid_manager);
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if (device_set == NULL) {
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//printf("HID/macos: no devices found\n");
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return NULL;
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}
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num_devices = (int)CFSetGetCount(device_set);
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//printf("number of devices found = %d\n", num_devices);
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if (num_devices < 1) {
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CFRelease(device_set);
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printf("HID/macos: no devices found, even though HID manager returned a set\n");
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return NULL;
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}
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if (num_devices > 256) {
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CFRelease(device_set);
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printf("HID/macos: too many devices, we get confused if more than 256!\n");
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return NULL;
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}
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CFSetGetValues(device_set, (const void **)&device_list);
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CFRelease(device_set);
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// open the first device in the list
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ret = IOHIDDeviceOpen(device_list[0], kIOHIDOptionsTypeNone);
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if (ret != kIOReturnSuccess) {
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printf("HID/macos: error opening device\n");
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return NULL;
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}
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// return this device
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hid = (struct rawhid_struct *)malloc(sizeof(struct rawhid_struct));
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buf = (uint8_t *)malloc(0x1000);
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if (hid == NULL || buf == NULL) {
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IOHIDDeviceRegisterRemovalCallback(device_list[0], NULL, NULL);
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IOHIDDeviceClose(device_list[0], kIOHIDOptionsTypeNone);
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printf("HID/macos: Unable to allocate memory\n");
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return NULL;
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}
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hid->ref = device_list[0];
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hid->disconnected = 0;
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hid->buffer = buf;
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hid->buffer_used = 0;
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// register a callback to receive input
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IOHIDDeviceRegisterInputReportCallback(hid->ref, hid->buffer, 0x1000,
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input_callback, hid);
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// register a callback to find out when it's unplugged
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IOHIDDeviceScheduleWithRunLoop(hid->ref, CFRunLoopGetCurrent(), kCFRunLoopDefaultMode);
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IOHIDDeviceRegisterRemovalCallback(hid->ref, unplug_callback, hid);
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return hid;
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}
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int rawhid_status(rawhid_t *hid)
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{
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if (!hid) return -1;
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// if a GUI is causing the run loop run, this will likely mess it up. Just
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// comment it out and if the callback still gets called without this, then
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// there's no need to run the run loop here!
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while (CFRunLoopRunInMode(kCFRunLoopDefaultMode, 0, true) == kCFRunLoopRunHandledSource) ;
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if (((struct rawhid_struct *)hid)->disconnected) {
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//printf("HID/macos: status: disconnected\n");
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return -1;
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}
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//printf("HID/macos: status: ok\n");
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return 0;
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}
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void rawhid_close(rawhid_t *hid)
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{
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IOHIDDeviceRef ref;
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if (!hid) return;
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ref = ((struct rawhid_struct *)hid)->ref;
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IOHIDDeviceRegisterRemovalCallback(ref, NULL, NULL);
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IOHIDDeviceClose(ref, kIOHIDOptionsTypeNone);
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free(hid);
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}
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int rawhid_read(rawhid_t *h, void *buf, int bufsize, int timeout_ms)
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{
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struct rawhid_struct *hid;
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int r, len;
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//printf("begin read\n");
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hid = (struct rawhid_struct *)h;
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if (!hid || hid->disconnected) return -1;
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while (CFRunLoopRunInMode(kCFRunLoopDefaultMode, 0, true) == kCFRunLoopRunHandledSource) {
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if (hid->buffer_used) {
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len = hid->buffer_used;
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if (len > bufsize) len = bufsize;
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memcpy(buf, hid->buffer, len);
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hid->buffer_used = 0;
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return len;
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}
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if (hid->disconnected) {
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return -1;
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}
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}
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r = CFRunLoopRunInMode(kCFRunLoopDefaultMode, (double)timeout_ms / 1000.0, true);
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if (r == kCFRunLoopRunTimedOut) {
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//printf("read timeout\n");
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return 0;
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}
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if (hid->buffer_used) {
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len = hid->buffer_used;
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if (len > bufsize) len = bufsize;
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memcpy(buf, hid->buffer, len);
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hid->buffer_used = 0;
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return len;
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}
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if (hid->disconnected) return -1;
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return 0;
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//num = bufsize;
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//ret = IOHIDDeviceGetReport(ref, kIOHIDReportTypeInput, 0, buf, &num);
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//if (!ret) return -1;
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//return num;
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}
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int rawhid_write(rawhid_t *hid, const void *buf, int len, int timeout_ms)
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{
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IOReturn ret;
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if (((struct rawhid_struct *)hid)->disconnected) return -1;
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ret = IOHIDDeviceSetReport(((struct rawhid_struct *)hid)->ref,
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kIOHIDReportTypeOutput, 0, buf, len);
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if (ret != kIOReturnSuccess) return -1;
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return 0;
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}
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#endif // Darwin - Mac OS X
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/*************************************************************************/
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/** **/
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/** Windows 2000/XP/Vista **/
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/** **/
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/*************************************************************************/
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#if (defined(WIN32) || defined(WINDOWS) || defined(__WINDOWS__)) && !defined(OPERATING_SYSTEM)
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#define OPERATING_SYSTEM windows
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#include <windows.h>
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#include <setupapi.h>
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#include <ddk/hidsdi.h>
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#include <ddk/hidclass.h>
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// http://msdn.microsoft.com/en-us/library/ms790932.aspx
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struct rawhid_struct {
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HANDLE handle;
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};
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|
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rawhid_t * rawhid_open_only1(int vid, int pid, int usage_page, int usage)
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{
|
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GUID guid;
|
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HDEVINFO info;
|
|
DWORD index=0, required_size;
|
|
SP_DEVICE_INTERFACE_DATA iface;
|
|
SP_DEVICE_INTERFACE_DETAIL_DATA *details;
|
|
HIDD_ATTRIBUTES attrib;
|
|
PHIDP_PREPARSED_DATA hid_data;
|
|
HIDP_CAPS capabilities;
|
|
struct rawhid_struct *hid;
|
|
HANDLE h;
|
|
BOOL ret;
|
|
|
|
|
|
HidD_GetHidGuid(&guid);
|
|
info = SetupDiGetClassDevs(&guid, NULL, NULL,
|
|
DIGCF_PRESENT | DIGCF_DEVICEINTERFACE);
|
|
if (info == INVALID_HANDLE_VALUE) {
|
|
printf("HID/win32: SetupDiGetClassDevs failed");
|
|
return NULL;
|
|
}
|
|
for (index=0; ;index++) {
|
|
iface.cbSize = sizeof(SP_DEVICE_INTERFACE_DATA);
|
|
ret = SetupDiEnumDeviceInterfaces(info, NULL, &guid, index, &iface);
|
|
if (!ret) {
|
|
// end of list
|
|
SetupDiDestroyDeviceInfoList(info);
|
|
return NULL;
|
|
}
|
|
SetupDiGetInterfaceDeviceDetail(info, &iface, NULL, 0, &required_size, NULL);
|
|
details = (SP_DEVICE_INTERFACE_DETAIL_DATA *)malloc(required_size);
|
|
if (details == NULL) continue;
|
|
memset(details, 0, required_size);
|
|
details->cbSize = sizeof(SP_DEVICE_INTERFACE_DETAIL_DATA);
|
|
ret = SetupDiGetDeviceInterfaceDetail(info, &iface, details,
|
|
required_size, NULL, NULL);
|
|
if (!ret) {
|
|
free(details);
|
|
continue;
|
|
}
|
|
h = CreateFile(details->DevicePath, GENERIC_READ|GENERIC_WRITE,
|
|
FILE_SHARE_READ|FILE_SHARE_WRITE, NULL, OPEN_EXISTING,
|
|
FILE_FLAG_OVERLAPPED, NULL);
|
|
free(details);
|
|
if (h == INVALID_HANDLE_VALUE) continue;
|
|
attrib.Size = sizeof(HIDD_ATTRIBUTES);
|
|
ret = HidD_GetAttributes(h, &attrib);
|
|
if (!ret) {
|
|
CloseHandle(h);
|
|
continue;
|
|
}
|
|
//printf("HID/win32: USB Device:\n");
|
|
//printf("HID/win32: vid = 0x%04X\n", (int)(attrib.VendorID));
|
|
//printf("HID/win32: pid = 0x%04X\n", (int)(attrib.ProductID));
|
|
if (vid > 0 && vid != (int)(attrib.VendorID)) {
|
|
CloseHandle(h);
|
|
continue;
|
|
}
|
|
if (pid > 0 && pid != (int)(attrib.ProductID)) {
|
|
CloseHandle(h);
|
|
continue;
|
|
}
|
|
if (!HidD_GetPreparsedData(h, &hid_data)) {
|
|
printf("HID/win32: HidD_GetPreparsedData failed\n");
|
|
CloseHandle(h);
|
|
continue;
|
|
}
|
|
if (!HidP_GetCaps(hid_data, &capabilities)) {
|
|
printf("HID/win32: HidP_GetCaps failed\n");
|
|
HidD_FreePreparsedData(hid_data);
|
|
CloseHandle(h);
|
|
continue;
|
|
}
|
|
//printf("HID/win32: usage_page = 0x%04X\n", (int)(capabilities.UsagePage));
|
|
//printf("HID/win32: usage = 0x%04X\n", (int)(capabilities.Usage));
|
|
if (usage_page > 0 && usage_page != (int)(capabilities.UsagePage)) {
|
|
HidD_FreePreparsedData(hid_data);
|
|
CloseHandle(h);
|
|
continue;
|
|
}
|
|
if (usage > 0 && usage != (int)(capabilities.Usage)) {
|
|
HidD_FreePreparsedData(hid_data);
|
|
CloseHandle(h);
|
|
continue;
|
|
}
|
|
HidD_FreePreparsedData(hid_data);
|
|
hid = (struct rawhid_struct *)malloc(sizeof(struct rawhid_struct));
|
|
if (!hid) {
|
|
CloseHandle(h);
|
|
printf("HID/win32: Unable to get %d bytes", sizeof(struct rawhid_struct));
|
|
continue;
|
|
}
|
|
hid->handle = h;
|
|
return hid;
|
|
}
|
|
}
|
|
|
|
|
|
int rawhid_status(rawhid_t *hid)
|
|
{
|
|
PHIDP_PREPARSED_DATA hid_data;
|
|
|
|
if (!hid) return -1;
|
|
if (!HidD_GetPreparsedData(((struct rawhid_struct *)hid)->handle, &hid_data)) {
|
|
printf("HID/win32: HidD_GetPreparsedData failed, device assumed disconnected\n");
|
|
return -1;
|
|
}
|
|
printf("HID/win32: HidD_GetPreparsedData ok, device still online :-)\n");
|
|
HidD_FreePreparsedData(hid_data);
|
|
return 0;
|
|
}
|
|
|
|
void rawhid_close(rawhid_t *hid)
|
|
{
|
|
if (!hid) return;
|
|
CloseHandle(((struct rawhid_struct *)hid)->handle);
|
|
free(hid);
|
|
}
|
|
|
|
int rawhid_read(rawhid_t *h, void *buf, int bufsize, int timeout_ms)
|
|
{
|
|
DWORD num=0, result;
|
|
BOOL ret;
|
|
OVERLAPPED ov;
|
|
struct rawhid_struct *hid;
|
|
int r;
|
|
|
|
hid = (struct rawhid_struct *)h;
|
|
if (!hid) return -1;
|
|
|
|
memset(&ov, 0, sizeof(OVERLAPPED));
|
|
ov.hEvent = CreateEvent(NULL, TRUE, FALSE, NULL);
|
|
if (ov.hEvent == NULL) return -1;
|
|
|
|
ret = ReadFile(hid->handle, buf, bufsize, &num, &ov);
|
|
if (ret) {
|
|
//printf("HID/win32: read success (immediate)\n");
|
|
r = num;
|
|
} else {
|
|
if (GetLastError() == ERROR_IO_PENDING) {
|
|
result = WaitForSingleObject(ov.hEvent, timeout_ms);
|
|
if (result == WAIT_OBJECT_0) {
|
|
if (GetOverlappedResult(hid->handle, &ov, &num, FALSE)) {
|
|
//printf("HID/win32: read success (delayed)\n");
|
|
r = num;
|
|
} else {
|
|
//printf("HID/win32: read failure (delayed)\n");
|
|
r = -1;
|
|
}
|
|
} else {
|
|
//printf("HID/win32: read timeout, %lx\n", result);
|
|
CancelIo(hid->handle);
|
|
r = 0;
|
|
}
|
|
} else {
|
|
//printf("HID/win32: read error (immediate)\n");
|
|
r = -1;
|
|
}
|
|
}
|
|
CloseHandle(ov.hEvent);
|
|
return r;
|
|
}
|
|
|
|
|
|
int rawhid_write(rawhid_t *h, const void *buf, int len, int timeout_ms)
|
|
{
|
|
DWORD num=0;
|
|
BOOL ret;
|
|
OVERLAPPED ov;
|
|
struct rawhid_struct *hid;
|
|
int r;
|
|
|
|
hid = (struct rawhid_struct *)h;
|
|
if (!hid) return -1;
|
|
|
|
memset(&ov, 0, sizeof(OVERLAPPED));
|
|
ov.hEvent = CreateEvent(NULL, TRUE, FALSE, NULL);
|
|
if (ov.hEvent == NULL) return -1;
|
|
|
|
// first byte is report ID, must be zero if report IDs not used
|
|
ret = WriteFile(hid->handle, buf, len, &num, &ov);
|
|
if (ret) {
|
|
if (num == len) {
|
|
//printf("HID/win32: write success (immediate)\n");
|
|
r = 0;
|
|
} else {
|
|
//printf("HID/win32: partial write (immediate)\n");
|
|
r = -1;
|
|
}
|
|
} else {
|
|
if (GetLastError() == ERROR_IO_PENDING) {
|
|
if (GetOverlappedResult(hid->handle, &ov, &num, TRUE)) {
|
|
if (num == len) {
|
|
//printf("HID/win32: write success (delayed)\n");
|
|
r = 0;
|
|
} else {
|
|
//printf("HID/win32: partial write (delayed)\n");
|
|
r = -1;
|
|
}
|
|
} else {
|
|
//printf("HID/win32: write error (delayed)\n");
|
|
r = -1;
|
|
}
|
|
} else {
|
|
//printf("HID/win32: write error (immediate)\n");
|
|
r = -1;
|
|
}
|
|
}
|
|
CloseHandle(ov.hEvent);
|
|
return r;
|
|
}
|
|
|
|
|
|
#endif // windows
|
|
|
|
|
|
|
|
#ifndef OPERATING_SYSTEM
|
|
#error Unknown operating system
|
|
#endif
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|