luke
/
ngspice
mirror of https://git.code.sf.net/p/ngspice/ngspice
1
0
Fork 0
Code Issues Packages Projects Releases Wiki Activity

Prevent a crash with shared ngspice when memory is exhausted: 

Add a pre-check if available memory is sufficient. If not, bail out.
This commit is contained in:
Holger Vogt 2026-03-26 16:15:10 +01:00
parent 883fa07320
commit 4ec701b43e
1 changed files with 20 additions and 0 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

20
src/frontend/outitf.c
View File

@ -38,6 +38,11 @@ extern int EVTsetup_plot(CKTcircuit* ckt, char* plotname);
extern IFsimulator SIMinfo;
extern char Spice_Build_Date[];
extern unsigned long long getMemorySize(void);
extern unsigned long long getPeakRSS(void);
extern unsigned long long getCurrentRSS(void);
extern unsigned long long getAvailableMemorySize(void);
static int beginPlot(JOB *analysisPtr, CKTcircuit *circuitPtr, char *cktName, char *analName,
char *refName, int refType, int numNames, char **dataNames, int dataType,
bool windowed, runDesc **runp);
@ -60,6 +65,7 @@ static bool getSpecial(dataDesc *desc, runDesc *run, IFvalue *val);
static void freeRun(runDesc *run);
static int InterpFileAdd(runDesc *plotPtr, IFvalue *refValue, IFvalue *valuePtr);
static int InterpPlotAdd(runDesc *plotPtr, IFvalue *refValue, IFvalue *valuePtr);
static inline int vlength2delta(int len);
/*Output data to spice module*/
#ifdef TCL_MODULE
@ -550,6 +556,20 @@ OUTpD_memory(runDesc *run, IFvalue *refValue, IFvalue *valuePtr)
{
int i, n = run->numData;
if (!cp_getvar("no_mem_check", CP_BOOL, NULL, 0)) {
/* Estimate the required memory */
size_t memrequ = (size_t)n * vlength2delta(0) * sizeof(double);
size_t memavail = getAvailableMemorySize();
if (memrequ > memavail) {
fprintf(stderr, "\nError: memory required (%Id Bytes)\n"
" is more than memory available (%Id Bytes)!\n",
memrequ, memavail);
fprintf(stderr, "Setting the output memory is not possible.\n");
controlled_exit(1);
}
}
for (i = 0; i < n; i++) {
dataDesc *d;