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Checking the return value of '...FileReady...' calls in dvbapi.c for better performance under heavy system load

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This commit is contained in:
Klaus Schmidinger
2002-03-29 11:43:58 +01:00
parent d9b6236191
commit 0358b2abb8
2 changed files with 58 additions and 53 deletions
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2
HISTORY
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@@ -1141,3 +1141,5 @@ Video Disk Recorder Revision History
- New command command line option '-V' to display the VDR version. - New command command line option '-V' to display the VDR version.
- Adjusting column width for channel numbers in case there are more than 999 - Adjusting column width for channel numbers in case there are more than 999
channels. channels.
- Checking the return value of '...FileReady...' calls in dvbapi.c for better
performance under heavy system load.

109
dvbapi.c
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@@ -4,7 +4,7 @@
* See the main source file 'vdr.c' for copyright information and * See the main source file 'vdr.c' for copyright information and
* how to reach the author. * how to reach the author.
* *
* $Id: dvbapi.c 1.165 2002/03/23 16:15:00 kls Exp $ * $Id: dvbapi.c 1.166 2002/03/29 11:32:47 kls Exp $
*/ */
#include "dvbapi.h" #include "dvbapi.h"
@@ -525,23 +525,25 @@ void cRecordBuffer::Input(void)
time_t t = time(NULL); time_t t = time(NULL);
recording = true; recording = true;
for (;;) { for (;;) {
int r = read(videoDev, b, sizeof(b)); if (cFile::FileReady(videoDev, 100)) {
if (r > 0) { int r = read(videoDev, b, sizeof(b));
uchar *p = b; if (r > 0) {
while (r > 0) { uchar *p = b;
int w = Put(p, r); while (r > 0) {
p += w; int w = Put(p, r);
r -= w; p += w;
} r -= w;
t = time(NULL); }
} t = time(NULL);
else if (r < 0) { }
if (FATALERRNO) { else if (r < 0) {
if (errno == EBUFFEROVERFLOW) // this error code is not defined in the library if (FATALERRNO) {
esyslog(LOG_ERR, "ERROR (%s,%d): DVB driver buffer overflow", __FILE__, __LINE__); if (errno == EBUFFEROVERFLOW) // this error code is not defined in the library
else { esyslog(LOG_ERR, "ERROR (%s,%d): DVB driver buffer overflow", __FILE__, __LINE__);
LOG_ERROR; else {
break; LOG_ERROR;
break;
}
} }
} }
} }
@@ -550,7 +552,6 @@ void cRecordBuffer::Input(void)
cThread::EmergencyExit(true); cThread::EmergencyExit(true);
t = time(NULL); t = time(NULL);
} }
cFile::FileReady(videoDev, 100);
if (!recording) if (!recording)
break; break;
} }
@@ -790,16 +791,17 @@ void cPlayBuffer::Output(void)
const uchar *p = frame->Data(); const uchar *p = frame->Data();
int r = frame->Count(); int r = frame->Count();
while (r > 0 && Busy() && !blockOutput) { while (r > 0 && Busy() && !blockOutput) {
cFile::FileReadyForWriting(videoDev, 100); if (cFile::FileReadyForWriting(videoDev, 100)) {
int w = write(videoDev, p, r); int w = write(videoDev, p, r);
if (w > 0) { if (w > 0) {
p += w; p += w;
r -= w; r -= w;
} }
else if (w < 0 && FATALERRNO) { else if (w < 0 && FATALERRNO) {
LOG_ERROR; LOG_ERROR;
Stop(); Stop();
return; return;
}
} }
} }
writeIndex = frame->Index(); writeIndex = frame->Index();
@@ -1370,31 +1372,32 @@ void cTransferBuffer::Input(void)
uchar b[MINVIDEODATA]; uchar b[MINVIDEODATA];
int n = 0; int n = 0;
while (Busy()) { while (Busy()) {
cFile::FileReady(fromDevice, 100); if (cFile::FileReady(fromDevice, 100)) {
int r = read(fromDevice, b + n, sizeof(b) - n); int r = read(fromDevice, b + n, sizeof(b) - n);
if (r > 0) { if (r > 0) {
n += r; n += r;
int Count = n, Result; int Count = n, Result;
const uchar *p = remux.Process(b, Count, Result); const uchar *p = remux.Process(b, Count, Result);
if (p) { if (p) {
while (Result > 0 && Busy()) { while (Result > 0 && Busy()) {
int w = Put(p, Result); int w = Put(p, Result);
p += w; p += w;
Result -= w; Result -= w;
}
}
if (Count > 0) {
n -= Count;
memmove(b, b + Count, n);
}
}
else if (r < 0) {
if (FATALERRNO) {
if (errno == EBUFFEROVERFLOW) // this error code is not defined in the library
esyslog(LOG_ERR, "ERROR (%s,%d): DVB driver buffer overflow", __FILE__, __LINE__);
else {
LOG_ERROR;
break;
} }
}
if (Count > 0) {
n -= Count;
memmove(b, b + Count, n);
}
}
else if (r < 0) {
if (FATALERRNO) {
if (errno == EBUFFEROVERFLOW) // this error code is not defined in the library
esyslog(LOG_ERR, "ERROR (%s,%d): DVB driver buffer overflow", __FILE__, __LINE__);
else {
LOG_ERROR;
break;
} }
} }
} }