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convert to and from other time stamp formats

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This commit is contained in:
Jeff Hill
1999-05-10 23:38:33 +00:00
parent 84837a4017
commit 9bc2ceaa06
2 changed files with 174 additions and 39 deletions
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158
src/gdd/aitHelpers.cc
View File

@@ -5,6 +5,9 @@
// $Id$
//
// $Log$
// Revision 1.10 1999/05/03 16:20:51 jhill
// allow aitTimeStamp to convert to TS_STAMP (without binding to libCom)
//
// Revision 1.9 1998/05/05 21:08:26 jhill
// fixed warning
//
@@ -37,18 +40,6 @@
#define epicsExportSharedSymbols
#include "aitTypes.h"
//
// force this module to include code that can convert
// to an EPICS time stamp, but dont force this library
// to link with libCom
//
#define INC_tsDefs_h
typedef struct {
aitUint32 secPastEpoch; /* seconds since 0000 Jan 1, 1990 */
aitUint32 nsec; /* nanoseconds within second */
} TS_STAMP;
#include "aitHelpers.h"
//
@@ -187,4 +178,145 @@ int aitString::init(const char* p, aitStrType typeIn, unsigned strLengthIn, unsi
break;
}
return rc;
}
}
//
// allow this module to include code that can convert
// to an EPICS time stamp, but dont force this library
// to link with libCom
//
struct TS_STAMP {
aitUint32 secPastEpoch; /* seconds since 0000 Jan 1, 1990 */
aitUint32 nsec; /* nanoseconds within second */
};
aitTimeStamp::operator struct TS_STAMP () const
{
TS_STAMP ts;
if (this->tv_sec>aitTimeStamp::epicsEpochSecPast1970) {
ts.secPastEpoch = this->tv_sec - aitTimeStamp::epicsEpochSecPast1970;
ts.nsec = this->tv_nsec;
}
else {
ts.secPastEpoch = 0;
ts.nsec = 0;
}
return ts;
}
void aitTimeStamp::get (struct TS_STAMP &ts) const
{
if (this->tv_sec>aitTimeStamp::epicsEpochSecPast1970) {
ts.secPastEpoch = this->tv_sec - aitTimeStamp::epicsEpochSecPast1970;
ts.nsec = this->tv_nsec;
}
else {
ts.secPastEpoch = 0;
ts.nsec = 0;
}
}
aitTimeStamp::aitTimeStamp (const struct TS_STAMP &ts)
{
this->tv_sec = ts.secPastEpoch + aitTimeStamp::epicsEpochSecPast1970;
this->tv_nsec = ts.nsec;
}
aitTimeStamp aitTimeStamp::operator = (const struct TS_STAMP &rhs)
{
this->tv_sec = rhs.secPastEpoch + aitTimeStamp::epicsEpochSecPast1970;
this->tv_nsec = rhs.nsec;
return *this;
}
//
// allow this module to include code that can convert
// to an EPICS time stamp, but dont force this library
// to link with libCom
//
class osiTime {
public:
unsigned long sec; /* seconds since 0000 Jan 1, 1990 */
unsigned long nSec; /* nanoseconds within second */
};
aitTimeStamp::operator osiTime () const
{
osiTime ts;
if (this->tv_sec>aitTimeStamp::epicsEpochSecPast1970) {
ts.sec = this->tv_sec - aitTimeStamp::epicsEpochSecPast1970;
ts.nSec = this->tv_nsec;
}
else {
ts.sec = 0;
ts.nSec = 0;
}
return ts;
}
void aitTimeStamp::get (osiTime &ts) const
{
if (this->tv_sec>aitTimeStamp::epicsEpochSecPast1970) {
ts.sec = this->tv_sec - aitTimeStamp::epicsEpochSecPast1970;
ts.nSec = this->tv_nsec;
}
else {
ts.sec = 0;
ts.nSec = 0;
}
}
aitTimeStamp::aitTimeStamp (const osiTime &ts)
{
this->tv_sec = ts.sec + aitTimeStamp::epicsEpochSecPast1970;
this->tv_nsec = ts.nSec;
}
aitTimeStamp aitTimeStamp::operator = (const osiTime &rhs)
{
this->tv_sec = rhs.sec + aitTimeStamp::epicsEpochSecPast1970;
this->tv_nsec = rhs.nSec;
return *this;
}
//
// allow this module to include code that can convert
// to and from a POSIX timespec, but allow this library
// to compile on systems that dont support it
//
struct timespec
{
unsigned long tv_sec;
unsigned long tv_nsec;
};
aitTimeStamp::operator struct timespec () const
{
struct timespec ts;
ts.tv_sec = (unsigned long) this->tv_sec;
ts.tv_nsec = (unsigned long) this->tv_nsec;
return ts;
}
void aitTimeStamp::get (struct timespec &ts) const
{
ts.tv_sec = (unsigned long) this->tv_sec;
ts.tv_nsec = (unsigned long) this->tv_nsec;
}
aitTimeStamp::aitTimeStamp (const struct timespec &ts)
{
this->tv_sec = (aitUint32) ts.tv_sec;
this->tv_nsec = (aitUint32) ts.tv_nsec;
}
aitTimeStamp aitTimeStamp::operator = (const struct timespec &rhs)
{
this->tv_sec = (aitUint32) rhs.tv_sec;
this->tv_nsec = (aitUint32) rhs.tv_nsec;
return *this;
}

55
src/gdd/aitHelpers.h
View File

@@ -8,6 +8,9 @@
* $Id$
*
* $Log$
* Revision 1.18 1999/05/03 16:20:51 jhill
* allow aitTimeStamp to convert to TS_STAMP (without binding to libCom)
*
* Revision 1.17 1999/04/30 00:09:47 jhill
* proper borrow
*
@@ -89,10 +92,16 @@ inline char* strDup(const char* x)
return y;
}
struct timespec;
struct TS_STAMP;
class osiTime;
class gdd;
class epicsShareClass aitTimeStamp {
friend inline aitTimeStamp operator+ (const aitTimeStamp &lhs, const aitTimeStamp &rhs);
friend inline aitTimeStamp operator- (const aitTimeStamp &lhs, const aitTimeStamp &rhs);
friend inline int operator>= (const aitTimeStamp &lhs, const aitTimeStamp &rhs);
friend class gdd;
public:
aitTimeStamp () : tv_sec(0u), tv_nsec(0u) {}
aitTimeStamp (const aitTimeStamp &t) : tv_sec(t.tv_sec), tv_nsec(t.tv_nsec) {}
@@ -135,41 +144,35 @@ public:
return ((float)this->tv_nsec)/NSecPerSec+this->tv_sec;
}
//
// convert to and from POSIX timespec format
//
operator struct timespec () const;
void get (struct timespec &) const;
aitTimeStamp (const struct timespec &ts);
aitTimeStamp operator = (const struct timespec &rhs);
//
// convert to and from EPICS TS_STAMP format
//
// include tsDefs.h prior to including osiTime.h
// if you need these capabilities
operator struct TS_STAMP () const;
void get (struct TS_STAMP &) const;
aitTimeStamp (const struct TS_STAMP &ts);
aitTimeStamp operator = (const struct TS_STAMP &rhs);
//
#ifdef INC_tsDefs_h
operator TS_STAMP () const
{
TS_STAMP ts;
assert (this->tv_sec>=aitTimeStamp::epicsEpochSecPast1970);
ts.secPastEpoch = this->tv_sec - aitTimeStamp::epicsEpochSecPast1970;
ts.nsec = this->tv_nsec;
return ts;
}
aitTimeStamp (const TS_STAMP &ts)
{
this->tv_sec = ts.secPastEpoch + aitTimeStamp::epicsEpochSecPast1970;
this->tv_nsec = ts.nsec;
}
operator = (const TS_STAMP &rhs)
{
this->tv_sec = rhs.secPastEpoch + aitTimeStamp::epicsEpochSecPast1970;
this->tv_nsec = rhs.nsec;
}
#endif
// convert to and from EPICS osiTime format
//
operator osiTime () const;
void get (osiTime &) const;
aitTimeStamp (const osiTime &ts);
aitTimeStamp operator = (const osiTime &rhs);
static aitTimeStamp getCurrent();
// private:
private:
unsigned long tv_sec;
unsigned long tv_nsec;
private:
static const unsigned epicsEpochSecPast1970;
};