/usr/lib/petscdir/3.7.5/x86_64-linux-gnu-complex/include/petsctime.h is in libpetsc-complex-3.7.5-dev 3.7.5+dfsg1-4+b1.
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1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 101 102 103 104 105 106 107 108 109 110 111 112 113 114 115 116 117 118 119 120 121 122 123 124 | /*
Low cost access to system time. This, in general, should not
be included in user programs.
*/
#if !defined(__PETSCTIME_H)
#define __PETSCTIME_H
#include <petscsys.h>
PETSC_EXTERN PetscErrorCode PetscGetCPUTime(PetscLogDouble*);
/* Global counters */
PETSC_EXTERN PetscLogDouble petsc_BaseTime;
/*MC
PetscTime - Returns the current time of day in seconds.
Synopsis:
#include <petsctime.h>
PetscTime(PetscLogDouble *v)
Not Collective
Output Parameter:
. v - time counter
Usage:
PetscLogDouble v;
PetscTime(&v);
.... perform some calculation ...
printf("Time for operation %g\n",v);
Level: developer
Notes:
Since the PETSc libraries incorporate timing of phases and operations,
we do not recommend ever using PetscTime()
The options database command -log_summary activate
PETSc library timing. See Users-Manual: ch_profiling for more details.
.seealso: PetscTimeSubtract(), PetscTimeAdd(), PetscLogStageRegister(), PetscLogEventRegister(), PetscLogEventBegin(), PetscLogEventEnd()
.keywords: Petsc, time
M*/
/*MC
PetscTimeSubtract - Subtracts the current time of day (in seconds) from
the value v.
Synopsis:
#include <petsctime.h>
PetscTimeSubtract(&PetscLogDouble *v)
Not Collective
Input Parameter:
. v - time counter
Output Parameter:
. v - time counter (v = v - current time)
Level: developer
Notes:
Since the PETSc libraries incorporate timing of phases and operations,
we do not every recommend using PetscTimeSubtract()
The options database command -log_summary activates
PETSc library timing. See Users-Manual: ch_profiling for more details, also
see PetscLogStageRegister(), PetscLogEventRegister(), PetscLogEventBegin(), PetscLogEventEnd() for how to register
stages and events in application codes.
.seealso: PetscTime(), PetscTimeAdd(), PetscLogStageRegister(), PetscLogEventRegister(), PetscLogEventBegin(), PetscLogEventEnd()
.keywords: Petsc, time, subtract
M*/
/*MC
PetscTimeAdd - Adds the current time of day (in seconds) to the value v.
Synopsis:
#include <petsctime.h>
PetscTimeAdd(PetscLogDouble *v)
Not Collective
Input Parameter:
. v - time counter
Output Parameter:
. v - time counter (v = v + current time)
Level: developer
Notes:
Since the PETSc libraries incorporate timing of phases and operations,
we do not ever recommend using PetscTimeAdd().
The options database command -log_summary activate
PETSc library timing. See Users-Manual: ch_profiling for more details.
.seealso: PetscTime(), PetscTimeSubtract(), PetscLogStageRegister(), PetscLogEventRegister(), PetscLogEventBegin(), PetscLogEventEnd()
.keywords: Petsc, time, add
M*/
PETSC_STATIC_INLINE PetscErrorCode PetscTime(PetscLogDouble *v)
{
*v = MPI_Wtime();
return 0;
}
PETSC_STATIC_INLINE PetscErrorCode PetscTimeSubtract(PetscLogDouble *v)
{
*v -= MPI_Wtime();
return 0;
}
PETSC_STATIC_INLINE PetscErrorCode PetscTimeAdd(PetscLogDouble *v)
{
*v += MPI_Wtime();
return 0;
}
#endif
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