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Code Issues Releases Wiki Activity

USB system wide device locking on windows

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This commit is contained in:
Kano 2013-01-24 02:39:37 +11:00
parent 16fa090013
commit 128e3270fb
1 changed files with 81 additions and 7 deletions
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88
usbutils.c
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@ -600,10 +600,67 @@ union semun {
static bool cgminer_usb_lock_bd(struct device_drv *drv, uint8_t bus_number, uint8_t device_address)
{
#ifdef WIN32
// NOOP for now
drv = 0;
bus_number = device_address = 0;
struct cgpu_info *cgpu;
HANDLE usbMutex;
char name[64];
DWORD res;
int i;
sprintf(name, "cgminer-usb-%d-%d", (int)bus_number, (int)device_address);
usbMutex = CreateMutex(NULL, FALSE, name);
if (usbMutex == NULL) {
applog(LOG_ERR,
"MTX: %s USB failed to get '%s' err (%d)",
drv->dname, name, GetLastError());
return false;
}
res = WaitForSingleObject(usbMutex, 0);
switch(res) {
case WAIT_OBJECT_0:
case WAIT_ABANDONED:
// Am I using it already?
for (i = 0; i < total_devices; i++) {
cgpu = devices[i];
if (cgpu->usbinfo.bus_number == bus_number &&
cgpu->usbinfo.device_address == device_address &&
cgpu->usbinfo.nodev == false) {
if (ReleaseMutex(usbMutex)) {
applog(LOG_WARNING,
"MTX: %s USB can't get '%s' - device in use",
drv->dname, name);
goto fail;
}
applog(LOG_ERR,
"MTX: %s USB can't get '%s' - device in use - failure (%d)",
drv->dname, name, GetLastError());
goto fail;
}
}
return true;
case WAIT_TIMEOUT:
applog(LOG_WARNING,
"MTX: %s USB failed to get '%s' - device in use",
drv->dname, name);
goto fail;
case WAIT_FAILED:
applog(LOG_ERR,
"MTX: %s USB failed to get '%s' err (%d)",
drv->dname, name, GetLastError());
goto fail;
default:
applog(LOG_ERR,
"MTX: %s USB failed to get '%s' unknown reply (%d)",
drv->dname, name, res);
goto fail;
}
CloseHandle(usbMutex);
return true;
fail:
CloseHandle(usbMutex);
return false;
#else
struct semid_ds seminfo;
union semun opt;
@ -672,7 +729,7 @@ static bool cgminer_usb_lock_bd(struct device_drv *drv, uint8_t bus_number, uint
drv->dname, sem, name);
} else {
applog(LOG_DEBUG,
"SEM: %s USB failed to get (%d) '%s' err(%d) %s",
"SEM: %s USB failed to get (%d) '%s' err (%d) %s",
drv->dname, sem, name, errno, strerror(errno));
}
return false;
@ -692,9 +749,26 @@ static bool cgminer_usb_lock(struct device_drv *drv, libusb_device *dev)
static void cgminer_usb_unlock_bd(struct device_drv *drv, uint8_t bus_number, uint8_t device_address)
{
#ifdef WIN32
// NOOP for now
drv = 0;
bus_number = device_address = 0;
HANDLE usbMutex;
char name[64];
sprintf(name, "cgminer-usb-%d-%d", (int)bus_number, (int)device_address);
usbMutex = CreateMutex(NULL, FALSE, name);
if (usbMutex == NULL) {
applog(LOG_ERR,
"MTX: %s USB failed to get '%s' for release err (%d)",
drv->dname, name, GetLastError());
return;
}
if (!ReleaseMutex(usbMutex))
applog(LOG_ERR,
"MTX: %s USB failed to release '%s' err (%d)",
drv->dname, name, GetLastError());
CloseHandle(usbMutex);
return;
#else
char name[64];
key_t key;