petsc-3.14.5 2021-03-03
Report Typos and Errors

# PetscMallocSetDebug

Set's PETSc memory debugging

### Synopsis

    #include "petscsys.h"
    PetscErrorCode PetscMallocSetDebug(PetscBool eachcall, PetscBool initializenan)

Not Collective

### Input Parameter

| eachcall | - checks the entire heap of allocated memory for issues on each call to PetscMalloc() and PetscFree()
| initializenan | - initializes all memory with NaN to catch use of uninitialized floating point arrays

### Options Database

| -malloc_debug <true or false> | - turns on or off debugging
| -malloc_test | - turns on all debugging if PETSc was configured with debugging including -malloc_dump, otherwise ignored
| -malloc_view_threshold t | - log only allocations larger than t
| -malloc_dump <filename> | - print a list of all memory that has not been freed
| -malloc no | - (deprecated) same as -malloc_debug no
| -malloc_log | - (deprecated) same as -malloc_view

Notes: This is called in PetscInitialize() and should not be called elsewhere

### See Also

CHKMEMQ(), PetscMallocValidate(), PetscMallocGetDebug()

### Level

developer

### Location

src/sys/memory/mtr.c
Index of all Sys routines
Table of Contents for all manual pages
Index of all manual pages