52 lines
1.2 KiB
C
52 lines
1.2 KiB
C
#include "tools/select.h"
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#include <vdr/tools.h>
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#include <sys/time.h>
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#include <sys/types.h>
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#include <time.h>
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#include <unistd.h>
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#include <errno.h>
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cTBSelect::cTBSelect(void) {
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Clear();
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}
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cTBSelect::~cTBSelect() {
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}
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int cTBSelect::Select(uint TimeoutMs) {
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struct timeval tv;
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ssize_t res = 0;
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int ms;
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tv.tv_usec = (TimeoutMs % 1000) * 1000;
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tv.tv_sec = TimeoutMs / 1000;
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memcpy(m_FdsResult, m_FdsQuery, sizeof(m_FdsResult));
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if (TimeoutMs == 0)
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return ::select(m_MaxFiled + 1, &m_FdsResult[0], &m_FdsResult[1], NULL, &tv);
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cTimeMs starttime;
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ms = TimeoutMs;
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while (ms > 0 && (res = ::select(m_MaxFiled + 1, &m_FdsResult[0], &m_FdsResult[1], NULL,
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&tv)) == -1 && errno == EINTR) {
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ms = TimeoutMs - starttime.Elapsed();
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tv.tv_usec = (ms % 1000) * 1000;
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tv.tv_sec = ms / 1000;
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memcpy(m_FdsResult, m_FdsQuery, sizeof(m_FdsResult));
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}
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if (ms <= 0 || res == 0) {
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errno = ETIMEDOUT;
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return -1;
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}
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return res;
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}
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int cTBSelect::Select(void) {
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ssize_t res;
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do {
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memcpy(m_FdsResult, m_FdsQuery, sizeof(m_FdsResult));
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} while ((res = ::select(m_MaxFiled + 1, &m_FdsResult[0], &m_FdsResult[1], NULL, NULL)) == -1 && errno == EINTR);
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return res;
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}
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