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/***************************************************************************************[System.cc]
Copyright (c) 2003-2006, Niklas Een, Niklas Sorensson
Copyright (c) 2007-2010, Niklas Sorensson
Permission is hereby granted, free of charge, to any person obtaining a copy of this software and
associated documentation files (the "Software"), to deal in the Software without restriction,
including without limitation the rights to use, copy, modify, merge, publish, distribute,
sublicense, and/or sell copies of the Software, and to permit persons to whom the Software is
furnished to do so, subject to the following conditions:
The above copyright notice and this permission notice shall be included in all copies or
substantial portions of the Software.
THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR IMPLIED, INCLUDING BUT
NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM,
DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT
OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
**************************************************************************************************/
#include "prop/bvminisat/utils/System.h"
#if defined(__linux__)
#include <stdio.h>
#include <stdlib.h>
namespace cvc5 {
namespace BVMinisat {
// TODO: split the memory reading functions into two: one for reading high-watermark of RSS, and
// one for reading the current virtual memory size.
static inline int memReadStat(int field)
{
char name[256];
pid_t pid = getpid();
int value;
sprintf(name, "/proc/%d/statm", pid);
FILE* in = fopen(name, "rb");
if (in == NULL) return 0;
for (; field >= 0; field--)
if (fscanf(in, "%d", &value) != 1)
printf("ERROR! Failed to parse memory statistics from \"/proc\".\n"), exit(1);
fclose(in);
return value;
}
static inline int memReadPeak(void)
{
char name[256];
pid_t pid = getpid();
sprintf(name, "/proc/%d/status", pid);
FILE* in = fopen(name, "rb");
if (in == NULL) return 0;
// Find the correct line, beginning with "VmPeak:":
int peak_kb = 0;
while (!feof(in) && fscanf(in, "VmPeak: %d kB", &peak_kb) != 1)
while (!feof(in) && fgetc(in) != '\n')
;
fclose(in);
return peak_kb;
}
double BVMinisat::memUsed() { return (double)memReadStat(0) * (double)getpagesize() / (1024*1024); }
double BVMinisat::memUsedPeak() {
double peak = memReadPeak() / 1024;
return peak == 0 ? memUsed() : peak; }
#elif defined(__FreeBSD__)
double BVMinisat::memUsed(void) {
struct rusage ru;
getrusage(RUSAGE_SELF, &ru);
return (double)ru.ru_maxrss / 1024; }
double MiniSat::memUsedPeak(void) { return memUsed(); }
#elif defined(__APPLE__)
#include <malloc/malloc.h>
double BVMinisat::memUsed(void) {
malloc_statistics_t t;
malloc_zone_statistics(NULL, &t);
return (double)t.max_size_in_use / (1024*1024); }
#else
double BVMinisat::memUsed() {
return 0; }
#endif
} /* cvc5::BVMinisat namespace */
} /* cvc5 namespace */
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