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PAL16631 (SALOME crash after a mesh computation failed due to lack of memory)

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use SMDS_MemoryLimit in CheckMemory() to know a lower memory limit
This commit is contained in:
eap 2007-09-24 13:49:46 +00:00
parent b18c323afd
commit 490be5a7f0
1 changed files with 21 additions and 3 deletions
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24
src/SMDS/SMDS_Mesh.cxx
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@ -43,6 +43,7 @@ using namespace std;
#include <sys/sysinfo.h>
#endif
//================================================================================
/*!
* \brief Raise an exception if free memory (ram+swap) too low
@ -59,18 +60,35 @@ int SMDS_Mesh::CheckMemory(const bool doNotRaise) throw (std::bad_alloc)
if ( err )
return -1;
static int limit = -1;
if ( limit < 0 ) {
int status = system("SMDS_MemoryLimit"); // it returns lower limit of free RAM
if (status >= 0 ) {
limit = WEXITSTATUS(status);
}
if ( limit < 20 )
limit = 20;
else
limit = int( limit * 1.5 );
#ifdef _DEBUG_
cout << "SMDS_Mesh::CheckMemory() memory limit = " << limit << " MB" << endl;
#endif
}
const unsigned long Mbyte = 1024 * 1024;
// compute separately to avoid overflow
int freeMb =
( si.freeram * si.mem_unit ) / Mbyte +
( si.freeswap * si.mem_unit ) / Mbyte;
if ( freeMb > 4 )
return freeMb;
if ( freeMb > limit )
return freeMb - limit;
if ( doNotRaise )
return 0;
cout<<"SMDS_Mesh::CheckMemory() throws std::bad_alloc() as freeMb="<<freeMb<<endl;
#ifdef _DEBUG_
cout<<"SMDS_Mesh::CheckMemory() throws as free memory too low: " << freeMb <<" MB" << endl;
#endif
throw std::bad_alloc();
#else
return -1;