xref: /petsc/include/petsc/private/hashmapijv.h (revision 98d129c30f3ee9fdddc40fdbc5a989b7be64f888)
1 #pragma once
2 
3 #include <petsc/private/hashmap.h>
4 #include <petsc/private/hashijkey.h>
5 
6 /* SUBMANSEC = Sys */
7 /*
8    Hash map from (PetscInt,PetscInt) --> PetscScalar
9 */
10 PETSC_HASH_MAP(HMapIJV, PetscHashIJKey, PetscScalar, PetscHashIJKeyHash, PetscHashIJKeyEqual, -1)
11 
12 /*MC
13   PetscHMapIJVQueryAdd - Add value to the value of a given key if the key exists,
14   otherwise, insert a new (key,value) entry in the hash table
15 
16   Synopsis:
17   #include <petsc/private/hashmapijv.h>
18   PetscErrorCode PetscHMapIJVQueryAdd(PetscHMapT ht,PetscHashIJKey key,PetscScalar val,PetscBool *missing)
19 
20   Input Parameters:
21 + ht  - The hash table
22 . key - The key
23 - val - The value
24 
25   Output Parameter:
26 . missing - `PETSC_TRUE` if the `PetscHMapIJV` did not already have the given key
27 
28   Level: developer
29 
30 .seealso: `PetscHMapIJVSetWithMode()`, `PetscHMapIJV`, `PetscHMapIJVGet()`, `PetscHMapIJVIterSet()`, `PetscHMapIJVSet()`
31 M*/
32 static inline PetscErrorCode PetscHMapIJVQueryAdd(PetscHMapIJV ht, PetscHashIJKey key, PetscScalar val, PetscBool *missing)
33 {
34   int      ret;
35   khiter_t iter;
36 
37   PetscFunctionBeginHot;
38   PetscAssertPointer(ht, 1);
39   iter = kh_put(HMapIJV, ht, key, &ret);
40   PetscHashAssert(ret >= 0);
41   if (ret) kh_val(ht, iter) = val;
42   else kh_val(ht, iter) += val;
43   *missing = ret ? PETSC_TRUE : PETSC_FALSE;
44   PetscFunctionReturn(PETSC_SUCCESS);
45 }
46