:orphan:
# PetscLogEventSync
Synchronizes the beginning of a user event. 
## Synopsis
```
#include <petsclog.h>
PetscErrorCode PetscLogEventSync(int e,MPI_Comm comm)
```
Collective


## Input Parameters

- ***e -*** integer associated with the event obtained from PetscLogEventRegister()
- ***comm -*** an MPI communicator



## Usage
```none
     PetscLogEvent USER_EVENT;
     PetscLogEventRegister("User event",0,&USER_EVENT);
     PetscLogEventSync(USER_EVENT,PETSC_COMM_WORLD);
     PetscLogEventBegin(USER_EVENT,0,0,0,0);
        [code segment to monitor]
     PetscLogEventEnd(USER_EVENT,0,0,0,0);
```





## Note
This routine should be called only if there is not a
`PetscObject` available to pass to `PetscLogEventBegin()`.


## See Also
 [](ch_profiling), `PetscLogEventRegister()`, `PetscLogEventBegin()`, `PetscLogEventEnd()`

## Level
developer

## Location
<A HREF="PETSC_DOC_OUT_ROOT_PLACEHOLDER/src/sys/logging/plog.c.html#PetscLogEventSync">src/sys/logging/plog.c</A>

## Examples
<A HREF="PETSC_DOC_OUT_ROOT_PLACEHOLDER/src/sys/tutorials/ex3.c.html">src/sys/tutorials/ex3.c</A><BR>


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[Edit on GitLab](https://gitlab.com/petsc/petsc/-/edit/release/src/sys/logging/plog.c)


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