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blpapi_highresolutionclock.h
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blpapi_highresolutionclock.h
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/* Copyright 2012. Bloomberg Finance L.P.
*
* Permission is hereby granted, free of charge, to any person obtaining a copy
* of this software and associated documentation files (the "Software"), to
* deal in the Software without restriction, including without limitation the
* rights to use, copy, modify, merge, publish, distribute, sublicense, and/or
* sell copies of the Software, and to permit persons to whom the Software is
* furnished to do so, subject to the following conditions: The above
* copyright notice and this permission notice shall be included in all copies
* or substantial portions of the Software.
*
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
* AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
* FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS
* IN THE SOFTWARE.
*/
// blpapi_clock.h -*-C++-*-
#ifndef INCLUDED_BLPAPI_HIGHRESOLUTIONCLOCK
#define INCLUDED_BLPAPI_HIGHRESOLUTIONCLOCK
//@PURPOSE: Provide a high resolution clock.
//
//@CLASSES:
// blpapi::HighResolutionClock: a high resolution clock
//
//@DESCRIPTION: This component provides a way to access the current time as a
// 'blpapi::TimePoint' value.
#ifndef INCLUDED_BLPAPI_CALL
#include <blpapi_call.h>
#endif
#ifndef INCLUDED_BLPAPI_DEFS
#include <blpapi_defs.h>
#endif
#ifndef INCLUDED_BLPAPI_TIMEPOINT
#include <blpapi_timepoint.h>
#endif
#ifndef INCLUDED_BLPAPI_TYPES
#include <blpapi_types.h>
#endif
#ifdef __cplusplus
extern "C" {
#endif
BLPAPI_EXPORT
int blpapi_HighResolutionClock_now(blpapi_TimePoint_t *timePoint);
// Load the current time into the specified 'timePoint' and return zero, or
// leave timePoint unchanged and return a non-zero value.
#ifdef __cplusplus
}
namespace BloombergLP {
namespace blpapi {
// ==========================
// struct HighResolutionClock
// ==========================
struct HighResolutionClock {
// This utility struct provides a source for the current moment in time as
// a 'blpapi::TimePoint' object. This is currently intended for use
// primarily in conjunction with the 'blpapi::Message::timeReceived'
// interfaces, to allow measurement of the amount of time a message spends
// in the client event queue.
static TimePoint now();
// Return the current moment in time as a 'TimePoint' value.
};
// ============================================================================
// INLINE AND TEMPLATE FUNCTION IMPLEMENTATIONS
// ============================================================================
// --------------------------
// struct HighResolutionClock
// --------------------------
inline
TimePoint HighResolutionClock::now()
{
TimePoint tp;
BLPAPI_CALL_HIGHRESOLUTIONCLOCK_NOW(&tp);
return tp;
}
} // close namespace blpapi
} // close namespace BloombergLP
#endif // #ifdef __cplusplus
#endif // #ifndef INCLUDED_BLPAPI_HIGHRESOLUTIONCLOCK