Scippy

SCIP

Solving Constraint Integer Programs

scip_mem.c
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1 /* * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * */
2 /* */
3 /* This file is part of the program and library */
4 /* SCIP --- Solving Constraint Integer Programs */
5 /* */
6 /* Copyright (c) 2002-2024 Zuse Institute Berlin (ZIB) */
7 /* */
8 /* Licensed under the Apache License, Version 2.0 (the "License"); */
9 /* you may not use this file except in compliance with the License. */
10 /* You may obtain a copy of the License at */
11 /* */
12 /* http://www.apache.org/licenses/LICENSE-2.0 */
13 /* */
14 /* Unless required by applicable law or agreed to in writing, software */
15 /* distributed under the License is distributed on an "AS IS" BASIS, */
16 /* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. */
17 /* See the License for the specific language governing permissions and */
18 /* limitations under the License. */
19 /* */
20 /* You should have received a copy of the Apache-2.0 license */
21 /* along with SCIP; see the file LICENSE. If not visit scipopt.org. */
22 /* */
23 /* * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * */
24 
25 /**@file scip_mem.c
26  * @ingroup OTHER_CFILES
27  * @brief public methods for memory management
28  * @author Tobias Achterberg
29  * @author Timo Berthold
30  * @author Gerald Gamrath
31  * @author Leona Gottwald
32  * @author Stefan Heinz
33  * @author Gregor Hendel
34  * @author Thorsten Koch
35  * @author Alexander Martin
36  * @author Marc Pfetsch
37  * @author Michael Winkler
38  * @author Kati Wolter
39  *
40  * @todo check all SCIP_STAGE_* switches, and include the new stages TRANSFORMED and INITSOLVE
41  */
42 
43 /*---+----1----+----2----+----3----+----4----+----5----+----6----+----7----+----8----+----9----+----0----+----1----+----2*/
44 
45 #include "scip/mem.h"
46 #include "scip/pub_message.h"
47 #include "scip/scip_mem.h"
48 #include "scip/set.h"
49 #include "scip/stat.h"
50 #include "scip/struct_mem.h"
51 #include "scip/struct_scip.h"
52 
53 /** returns block memory to use at the current time
54  *
55  * @return the block memory to use at the current time.
56  */
58  SCIP* scip /**< SCIP data structure */
59  )
60 {
61  assert(scip != NULL);
62  assert(scip->set != NULL);
63  assert(scip->mem != NULL);
64 
65  return scip->mem->probmem;
66 }
67 
68 /** returns buffer memory for short living temporary objects
69  *
70  * @return the buffer memory for short living temporary objects
71  */
73  SCIP* scip /**< SCIP data structure */
74  )
75 {
76  assert(scip != NULL);
77  assert(scip->mem != NULL);
78 
79  return scip->mem->buffer;
80 }
81 
82 /** returns clean buffer memory for short living temporary objects initialized to all zero
83  *
84  * @return the buffer memory for short living temporary objects initialized to all zero
85  */
87  SCIP* scip /**< SCIP data structure */
88  )
89 {
90  assert(scip != NULL);
91  assert(scip->mem != NULL);
92 
93  return scip->mem->cleanbuffer;
94 }
95 
96 /** returns the total number of bytes used in block and buffer memory
97  *
98  * @return the total number of bytes used in block and buffer memory.
99  */
101  SCIP* scip /**< SCIP data structure */
102  )
103 {
104  assert(scip != NULL);
105 
106  return SCIPmemGetUsed(scip->mem);
107 }
108 
109 /** returns the total number of bytes in block and buffer memory
110  *
111  * @return the total number of bytes in block and buffer memory.
112  */
114  SCIP* scip /**< SCIP data structure */
115  )
116 {
117  assert(scip != NULL);
118 
119  return SCIPmemGetTotal(scip->mem);
120 }
121 
122 /** returns the estimated number of bytes used by external software, e.g., the LP solver
123  *
124  * @return the estimated number of bytes used by external software, e.g., the LP solver.
125  */
127  SCIP* scip /**< SCIP data structure */
128  )
129 {
130  assert(scip != NULL);
131 
132  return SCIPstatGetMemExternEstim(scip->stat);
133 }
134 
135 /** calculate memory size for dynamically allocated arrays
136  *
137  * @return the memory size for dynamically allocated arrays.
138  */
140  SCIP* scip, /**< SCIP data structure */
141  int num /**< minimum number of entries to store */
142  )
143 {
144  assert(scip != NULL);
145 
146  return SCIPsetCalcMemGrowSize(scip->set, num);
147 }
148 
149 /** extends a dynamically allocated block memory array to be able to store at least the given number of elements;
150  * use SCIPensureBlockMemoryArray() define to call this method!
151  *
152  * @return \ref SCIP_OKAY is returned if everything worked. Otherwise a suitable error code is passed. See \ref
153  * SCIP_Retcode "SCIP_RETCODE" for a complete list of error codes.
154  */
156  SCIP* scip, /**< SCIP data structure */
157  void** arrayptr, /**< pointer to dynamically sized array */
158  size_t elemsize, /**< size in bytes of each element in array */
159  int* arraysize, /**< pointer to current array size */
160  int minsize /**< required minimal array size */
161  )
162 {
163  assert(scip != NULL);
164  assert(arrayptr != NULL);
165  assert(elemsize > 0);
166  assert(arraysize != NULL);
167 
168  if( minsize > *arraysize )
169  {
170  int newsize;
171 
172  newsize = SCIPsetCalcMemGrowSize(scip->set, minsize);
173  SCIP_ALLOC( BMSreallocBlockMemorySize(SCIPblkmem(scip), arrayptr, *arraysize * elemsize, newsize * elemsize) );
174  *arraysize = newsize;
175  }
176 
177  return SCIP_OKAY;
178 }
179 
180 /** prints output about used memory */
182  SCIP* scip /**< SCIP data structure */
183  )
184 {
185  assert(scip != NULL);
186  assert(scip->mem != NULL);
187  assert(scip->set != NULL);
188 
190 
191  SCIPmessagePrintInfo(scip->messagehdlr, "\nParameter Block Memory (%p):\n", (void*)scip->mem->setmem);
193 
194  SCIPmessagePrintInfo(scip->messagehdlr, "\nSolution Block Memory (%p):\n", (void*)scip->mem->probmem);
196 
197  SCIPmessagePrintInfo(scip->messagehdlr, "\nMemory Buffers:\n");
199 
200  SCIPmessagePrintInfo(scip->messagehdlr, "\nClean Memory Buffers:\n");
202 }
SCIP_STAT * stat
Definition: struct_scip.h:80
#define NULL
Definition: def.h:267
BMS_BUFMEM * cleanbuffer
Definition: struct_mem.h:51
public methods for memory management
BMS_BUFMEM * buffer
Definition: struct_mem.h:50
SCIP_Longint SCIPmemGetUsed(SCIP_MEM *mem)
Definition: mem.c:97
int SCIPcalcMemGrowSize(SCIP *scip, int num)
Definition: scip_mem.c:139
enum SCIP_Retcode SCIP_RETCODE
Definition: type_retcode.h:63
int SCIPsetCalcMemGrowSize(SCIP_SET *set, int num)
Definition: set.c:5846
#define BMSdisplayBlockMemory(mem)
Definition: memory.h:480
BMS_BLKMEM * SCIPblkmem(SCIP *scip)
Definition: scip_mem.c:57
SCIP_RETCODE SCIPensureBlockMemoryArray_call(SCIP *scip, void **arrayptr, size_t elemsize, int *arraysize, int minsize)
Definition: scip_mem.c:155
void SCIPprintMemoryDiagnostic(SCIP *scip)
Definition: scip_mem.c:181
SCIP_MEM * mem
Definition: struct_scip.h:72
BMS_BUFMEM * SCIPbuffer(SCIP *scip)
Definition: scip_mem.c:72
methods for block memory pools and memory buffers
#define BMSdisplayMemory()
Definition: memory.h:154
internal methods for global SCIP settings
SCIP main data structure.
BMS_BLKMEM * setmem
Definition: struct_mem.h:48
void SCIPmessagePrintInfo(SCIP_MESSAGEHDLR *messagehdlr, const char *formatstr,...)
Definition: message.c:594
BMS_BUFMEM * SCIPcleanbuffer(SCIP *scip)
Definition: scip_mem.c:86
#define BMSreallocBlockMemorySize(mem, ptr, oldsize, newsize)
Definition: memory.h:456
datastructures for block memory pools and memory buffers
SCIP_Longint SCIPgetMemTotal(SCIP *scip)
Definition: scip_mem.c:113
void BMSprintBufferMemory(BMS_BUFMEM *buffer)
Definition: memory.c:3157
BMS_BLKMEM * probmem
Definition: struct_mem.h:49
SCIP_Longint SCIPgetMemUsed(SCIP *scip)
Definition: scip_mem.c:100
SCIP_Longint SCIPmemGetTotal(SCIP_MEM *mem)
Definition: mem.c:108
SCIP_SET * set
Definition: struct_scip.h:73
public methods for message output
SCIP_Longint SCIPgetMemExternEstim(SCIP *scip)
Definition: scip_mem.c:126
SCIP_MESSAGEHDLR * messagehdlr
Definition: struct_scip.h:76
internal methods for problem statistics
SCIP_Longint SCIPstatGetMemExternEstim(SCIP_STAT *stat)
Definition: stat.c:736
#define SCIP_Longint
Definition: def.h:158
struct BMS_BlkMem BMS_BLKMEM
Definition: memory.h:437
#define SCIP_ALLOC(x)
Definition: def.h:391