本文整理汇总了C++中LOCK_TAKE函数的典型用法代码示例。如果您正苦于以下问题：C++ LOCK_TAKE函数的具体用法？C++ LOCK_TAKE怎么用？C++ LOCK_TAKE使用的例子？那么恭喜您, 这里精选的函数代码示例或许可以为您提供帮助。
在下文中一共展示了LOCK_TAKE函数的15个代码示例，这些例子默认根据受欢迎程度排序。您可以为喜欢或者感觉有用的代码点赞，您的评价将有助于系统推荐出更棒的C++代码示例。
示例1: pvr2_ctrl_set_mask_value
/* Set/clear specific bits of the given control. */
int pvr2_ctrl_set_mask_value(struct pvr2_ctrl *cptr,int mask,int val)
{
int ret = 0;
if (!cptr) return -EINVAL;
LOCK_TAKE(cptr->hdw->big_lock); do {
if (cptr->info->set_value != 0) {
if (cptr->info->type == pvr2_ctl_bitmask) {
mask &= cptr->info->def.type_bitmask.valid_bits;
} else if (cptr->info->type == pvr2_ctl_int) {
int lim;
lim = cptr->info->def.type_int.min_value;
if (cptr->info->get_min_value) {
cptr->info->get_min_value(cptr,&lim);
}
if (val < lim) break;
lim = cptr->info->def.type_int.max_value;
if (cptr->info->get_max_value) {
cptr->info->get_max_value(cptr,&lim);
}
if (val > lim) break;
} else if (cptr->info->type == pvr2_ctl_enum) {
if (val >= cptr->info->def.type_enum.count) {
break;
}
} else if (cptr->info->type != pvr2_ctl_bool) {
break;
}
ret = cptr->info->set_value(cptr,mask,val);
} else {
ret = -EPERM;
}
} while(0); LOCK_GIVE(cptr->hdw->big_lock);
return ret;
}示例2: pvr2_ctrl_set_mask_value
/* Set/clear specific bits of the given control. */
int pvr2_ctrl_set_mask_value(struct pvr2_ctrl *cptr,int mask,int val)
{
int ret = 0;
if (!cptr) return -EINVAL;
LOCK_TAKE(cptr->hdw->big_lock); do {
if (cptr->info->set_value != 0) {
if (cptr->info->type == pvr2_ctl_bitmask) {
mask &= cptr->info->def.type_bitmask.valid_bits;
} else if (cptr->info->type == pvr2_ctl_int) {
ret = pvr2_ctrl_range_check(cptr,val);
if (ret < 0) break;
} else if (cptr->info->type == pvr2_ctl_enum) {
if (val >= cptr->info->def.type_enum.count) {
break;
}
} else if (cptr->info->type != pvr2_ctl_bool) {
break;
}
ret = cptr->info->set_value(cptr,mask,val);
} else {
ret = -EPERM;
}
} while(0); LOCK_GIVE(cptr->hdw->big_lock);
return ret;
}示例3: pvr2_ctrl_sym_to_value
/* Convert a symbolic value to a mask/value pair */
int pvr2_ctrl_sym_to_value(struct pvr2_ctrl *cptr,
const char *ptr,unsigned int len,
int *maskptr,int *valptr)
{
int ret = -EINVAL;
unsigned int cnt;
*maskptr = 0;
*valptr = 0;
cnt = 0;
while ((cnt < len) && ((ptr[cnt] <= 32) || (ptr[cnt] >= 127))) cnt++;
len -= cnt; ptr += cnt;
cnt = 0;
while ((cnt < len) && ((ptr[len-(cnt+1)] <= 32) ||
(ptr[len-(cnt+1)] >= 127))) cnt++;
len -= cnt;
if (!len) return -EINVAL;
LOCK_TAKE(cptr->hdw->big_lock); do {
if (cptr->info->type == pvr2_ctl_int) {
ret = parse_token(ptr,len,valptr,NULL,0);
if ((ret >= 0) &&
((*valptr < cptr->info->def.type_int.min_value) ||
(*valptr > cptr->info->def.type_int.max_value))) {
ret = -ERANGE;
}
if (maskptr) *maskptr = ~0;
} else if (cptr->info->type == pvr2_ctl_bool) {
ret = parse_token(
ptr,len,valptr,boolNames,
sizeof(boolNames)/sizeof(boolNames[0]));
if (ret == 1) {
*valptr = *valptr ? !0 : 0;
} else if (ret == 0) {
*valptr = (*valptr & 1) ? !0 : 0;
}
if (maskptr) *maskptr = 1;
} else if (cptr->info->type == pvr2_ctl_enum) {
ret = parse_token(
ptr,len,valptr,
cptr->info->def.type_enum.value_names,
cptr->info->def.type_enum.count);
if ((ret >= 0) &&
((*valptr < 0) ||
(*valptr >= cptr->info->def.type_enum.count))) {
ret = -ERANGE;
}
if (maskptr) *maskptr = ~0;
} else if (cptr->info->type == pvr2_ctl_bitmask) {
ret = parse_tlist(
ptr,len,maskptr,valptr,
cptr->info->def.type_bitmask.bit_names,
cptr->info->def.type_bitmask.valid_bits);
}
} while(0); LOCK_GIVE(cptr->hdw->big_lock);
return ret;
}示例4: pvr2_ctrl_get_value
int pvr2_ctrl_get_value(struct pvr2_ctrl *cptr,int *valptr)
{
int ret = 0;
if (!cptr) return -EINVAL;
LOCK_TAKE(cptr->hdw->big_lock); do {
ret = cptr->info->get_value(cptr,valptr);
} while(0); LOCK_GIVE(cptr->hdw->big_lock);
return ret;
}示例5: pvr2_ctrl_get_mask
int pvr2_ctrl_get_mask(struct pvr2_ctrl *cptr)
{
int ret = 0;
if (!cptr) return 0;
LOCK_TAKE(cptr->hdw->big_lock); do {
if (cptr->info->type == pvr2_ctl_bitmask) {
ret = cptr->info->def.type_bitmask.valid_bits;
}
} while(0); LOCK_GIVE(cptr->hdw->big_lock);
return ret;
}示例6: pvr2_ctrl_get_def
/* Retrieve control's default value (any type) */
int pvr2_ctrl_get_def(struct pvr2_ctrl *cptr)
{
int ret = 0;
if (!cptr) return 0;
LOCK_TAKE(cptr->hdw->big_lock); do {
if (cptr->info->type == pvr2_ctl_int) {
ret = cptr->info->default_value;
}
} while(0); LOCK_GIVE(cptr->hdw->big_lock);
return ret;
}示例7: pvr2_ctrl_get_cnt
int pvr2_ctrl_get_cnt(struct pvr2_ctrl *cptr)
{
int ret = 0;
if (!cptr) return 0;
LOCK_TAKE(cptr->hdw->big_lock); do {
if (cptr->info->type == pvr2_ctl_enum) {
ret = cptr->info->def.type_enum.count;
}
} while(0); LOCK_GIVE(cptr->hdw->big_lock);
return ret;
}示例8: pvr2_ctrl_value_to_sym
int pvr2_ctrl_value_to_sym(struct pvr2_ctrl *cptr,
int mask,int val,
char *buf,unsigned int maxlen,
unsigned int *len)
{
int ret;
LOCK_TAKE(cptr->hdw->big_lock); do {
ret = pvr2_ctrl_value_to_sym_internal(cptr,mask,val,
buf,maxlen,len);
} while(0); LOCK_GIVE(cptr->hdw->big_lock);
return ret;
}示例9: pvr2_ctrl_get_max
int pvr2_ctrl_get_max(struct pvr2_ctrl *cptr)
{
int ret = 0;
if (!cptr) return 0;
LOCK_TAKE(cptr->hdw->big_lock); do {
if (cptr->info->get_max_value) {
cptr->info->get_max_value(cptr,&ret);
} else if (cptr->info->type == pvr2_ctl_int) {
ret = cptr->info->def.type_int.max_value;
}
} while(0); LOCK_GIVE(cptr->hdw->big_lock);
return ret;
}示例10: pvr2_ctrl_get_def
int pvr2_ctrl_get_def(struct pvr2_ctrl *cptr, int *valptr)
{
int ret = 0;
if (!cptr) return -EINVAL;
LOCK_TAKE(cptr->hdw->big_lock); do {
if (cptr->info->get_def_value) {
ret = cptr->info->get_def_value(cptr, valptr);
} else {
*valptr = cptr->info->default_value;
}
} while(0); LOCK_GIVE(cptr->hdw->big_lock);
return ret;
}示例11: pvr2_ctrl_get_valname
/* Retrieve a control enumeration or bit mask value */
int pvr2_ctrl_get_valname(struct pvr2_ctrl *cptr,int val,
char *bptr,unsigned int bmax,
unsigned int *blen)
{
int ret = -EINVAL;
if (!cptr) return 0;
*blen = 0;
LOCK_TAKE(cptr->hdw->big_lock); do {
if (cptr->info->type == pvr2_ctl_enum) {
<<<<<<< HEAD
const char * const *names;
=======
const char **names;
>>>>>>> 296c66da8a02d52243f45b80521febece5ed498a示例12: pvr2_encoder_prep_config
static int pvr2_encoder_prep_config(struct pvr2_hdw *hdw)
{
int ret = 0;
int encMisc3Arg = 0;
#if 0
LOCK_TAKE(hdw->ctl_lock); do {
u32 dat[1];
dat[0] = 0x80000640;
pvr2_encoder_write_words(hdw,0x01fe,dat,1);
pvr2_encoder_write_words(hdw,0x023e,dat,1);
} while(0); LOCK_GIVE(hdw->ctl_lock);
#endif
#if 0
ret |= pvr2_encoder_vcmd(hdw, CX2341X_ENC_MISC,4, 5,0,0,0);
#endif
if (hdw->hdw_desc->flag_has_cx25840) {
encMisc3Arg = 1;
} else {
encMisc3Arg = 0;
}
ret |= pvr2_encoder_vcmd(hdw, CX2341X_ENC_MISC,4, 3,
encMisc3Arg,0,0);
ret |= pvr2_encoder_vcmd(hdw, CX2341X_ENC_MISC,4, 8,0,0,0);
#if 0
ret |= pvr2_encoder_vcmd(hdw, CX2341X_ENC_MISC,4, 4,1,0,0);
#endif
ret |= pvr2_encoder_vcmd(hdw, CX2341X_ENC_MISC,4, 0,3,0,0);
ret |= pvr2_encoder_vcmd(hdw, CX2341X_ENC_MISC,4,15,0,0,0);
ret |= pvr2_encoder_vcmd(hdw, CX2341X_ENC_MISC, 2, 4, 1);
return ret;
}示例13: pvr2_ctrl_get_valname
/* Retrieve a control enumeration or bit mask value */
int pvr2_ctrl_get_valname(struct pvr2_ctrl *cptr,int val,
char *bptr,unsigned int bmax,
unsigned int *blen)
{
int ret = -EINVAL;
if (!cptr) return 0;
*blen = 0;
LOCK_TAKE(cptr->hdw->big_lock); do {
if (cptr->info->type == pvr2_ctl_enum) {
const char **names;
names = cptr->info->def.type_enum.value_names;
if ((val >= 0) &&
(val < cptr->info->def.type_enum.count)) {
if (names[val]) {
*blen = scnprintf(
bptr,bmax,"%s",
names[val]);
} else {
*blen = 0;
}
ret = 0;
}
} else if (cptr->info->type == pvr2_ctl_bitmask) {
const char **names;
unsigned int idx;
int msk;
names = cptr->info->def.type_bitmask.bit_names;
val &= cptr->info->def.type_bitmask.valid_bits;
for (idx = 0, msk = 1; val; idx++, msk <<= 1) {
if (val & msk) {
*blen = scnprintf(bptr,bmax,"%s",
names[idx]);
ret = 0;
break;
}
}
}
} while(0); LOCK_GIVE(cptr->hdw->big_lock);
return ret;
}示例14: pvr2_encoder_cmd
static int pvr2_encoder_cmd(void *ctxt,
u32 cmd,
int arg_cnt_send,
int arg_cnt_recv,
u32 *argp)
{
unsigned int poll_count;
unsigned int try_count = 0;
int retry_flag;
int ret = 0;
unsigned int idx;
u32 wrData[16];
u32 rdData[16];
struct pvr2_hdw *hdw = (struct pvr2_hdw *)ctxt;
if (arg_cnt_send > (ARRAY_SIZE(wrData) - 4)) {
pvr2_trace(
PVR2_TRACE_ERROR_LEGS,
"Failed to write cx23416 command"
" - too many input arguments"
" (was given %u limit %lu)",
arg_cnt_send, (long unsigned) ARRAY_SIZE(wrData) - 4);
return -EINVAL;
}
if (arg_cnt_recv > (ARRAY_SIZE(rdData) - 4)) {
pvr2_trace(
PVR2_TRACE_ERROR_LEGS,
"Failed to write cx23416 command"
" - too many return arguments"
" (was given %u limit %lu)",
arg_cnt_recv, (long unsigned) ARRAY_SIZE(rdData) - 4);
return -EINVAL;
}
LOCK_TAKE(hdw->ctl_lock); do {
if (!hdw->state_encoder_ok) {
ret = -EIO;
break;
}
retry_flag = 0;
try_count++;
ret = 0;
wrData[0] = 0;
wrData[1] = cmd;
wrData[2] = 0;
wrData[3] = 0x00060000;
for (idx = 0; idx < arg_cnt_send; idx++) {
wrData[idx+4] = argp[idx];
}
for (; idx < ARRAY_SIZE(wrData) - 4; idx++) {
wrData[idx+4] = 0;
}
ret = pvr2_encoder_write_words(hdw,MBOX_BASE,wrData,idx);
if (ret) break;
wrData[0] = IVTV_MBOX_DRIVER_DONE|IVTV_MBOX_DRIVER_BUSY;
ret = pvr2_encoder_write_words(hdw,MBOX_BASE,wrData,1);
if (ret) break;
poll_count = 0;
while (1) {
poll_count++;
ret = pvr2_encoder_read_words(hdw,MBOX_BASE,rdData,
arg_cnt_recv+4);
if (ret) {
break;
}
if (rdData[0] & IVTV_MBOX_FIRMWARE_DONE) {
break;
}
if (rdData[0] && (poll_count < 1000)) continue;
if (!rdData[0]) {
retry_flag = !0;
pvr2_trace(
PVR2_TRACE_ERROR_LEGS,
"Encoder timed out waiting for us"
"; arranging to retry");
} else {
pvr2_trace(
PVR2_TRACE_ERROR_LEGS,
"***WARNING*** device's encoder"
" appears to be stuck"
" (status=0x%08x)",rdData[0]);
}
pvr2_trace(
PVR2_TRACE_ERROR_LEGS,
"Encoder command: 0x%02x",cmd);
for (idx = 4; idx < arg_cnt_send; idx++) {
pvr2_trace(
PVR2_TRACE_ERROR_LEGS,
"Encoder arg%d: 0x%08x",
idx-3,wrData[idx]);
}
ret = -EBUSY;
//.........这里部分代码省略.........
示例15: encoder
/* This prototype is set up to be compatible with the
cx2341x_mbox_func prototype in cx2341x.h, which should be in
kernels 2.6.18 or later. We do this so that we can enable
cx2341x.ko to write to our encoder (by handing it a pointer to this
function). For earlier kernels this doesn't really matter. */
static int pvr2_encoder_cmd(void *ctxt,
int cmd,
int arg_cnt_send,
int arg_cnt_recv,
u32 *argp)
{
unsigned int poll_count;
int ret = 0;
unsigned int idx;
/* These sizes look to be limited by the FX2 firmware implementation */
u32 wrData[16];
u32 rdData[16];
struct pvr2_hdw *hdw = (struct pvr2_hdw *)ctxt;
/*
The encoder seems to speak entirely using blocks 32 bit words.
In ivtv driver terms, this is a mailbox which we populate with
data and watch what the hardware does with it. The first word
is a set of flags used to control the transaction, the second
word is the command to execute, the third byte is zero (ivtv
driver suggests that this is some kind of return value), and
the fourth byte is a specified timeout (windows driver always
uses 0x00060000 except for one case when it is zero). All
successive words are the argument words for the command.
First, write out the entire set of words, with the first word
being zero.
Next, write out just the first word again, but set it to
IVTV_MBOX_DRIVER_DONE | IVTV_DRIVER_BUSY this time (which
probably means "go").
Next, read back 16 words as status. Check the first word,
which should have IVTV_MBOX_FIRMWARE_DONE set. If however
that bit is not set, then the command isn't done so repeat the
read.
Next, read back 32 words and compare with the original
arugments. Hopefully they will match.
Finally, write out just the first word again, but set it to
0x0 this time (which probably means "idle").
*/
if (arg_cnt_send > (sizeof(wrData)/sizeof(wrData[0]))-4) {
pvr2_trace(
PVR2_TRACE_ERROR_LEGS,
"Failed to write cx23416 command"
" - too many input arguments"
" (was given %u limit %u)",
arg_cnt_send,
(unsigned int)(sizeof(wrData)/sizeof(wrData[0])) - 4);
return -EINVAL;
}
if (arg_cnt_recv > (sizeof(rdData)/sizeof(rdData[0]))-4) {
pvr2_trace(
PVR2_TRACE_ERROR_LEGS,
"Failed to write cx23416 command"
" - too many return arguments"
" (was given %u limit %u)",
arg_cnt_recv,
(unsigned int)(sizeof(rdData)/sizeof(rdData[0])) - 4);
return -EINVAL;
}
LOCK_TAKE(hdw->ctl_lock); do {
wrData[0] = 0;
wrData[1] = cmd;
wrData[2] = 0;
wrData[3] = 0x00060000;
for (idx = 0; idx < arg_cnt_send; idx++) {
wrData[idx+4] = argp[idx];
}
for (; idx < (sizeof(wrData)/sizeof(wrData[0]))-4; idx++) {
wrData[idx+4] = 0;
}
ret = pvr2_encoder_write_words(hdw,wrData,idx);
if (ret) break;
wrData[0] = IVTV_MBOX_DRIVER_DONE|IVTV_MBOX_DRIVER_BUSY;
ret = pvr2_encoder_write_words(hdw,wrData,1);
if (ret) break;
poll_count = 0;
while (1) {
if (poll_count < 10000000) poll_count++;
ret = pvr2_encoder_read_words(hdw,!0,rdData,1);
if (ret) break;
if (rdData[0] & IVTV_MBOX_FIRMWARE_DONE) {
break;
//.........这里部分代码省略.........