src/android/jni/sysconf.cc

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#include "android/jni/sysconf.h"

#include <cstdlib>
#include <fstream>
#include <string>
#include <unistd.h>

extern "C" {

int mysysconf(int name) {
  if (name == _SC_PHYS_PAGES) {
    std::ifstream ifs("/proc/meminfo");
    if (!ifs) {
      return -2;
    }

    long size = -3;
    std::string line;
    while (std::getline(ifs, line)) {
      if (std::sscanf(line.c_str(), "MemTotal: %ld kB", &size) == 1) {
        break;
      }
    }
    ifs.close();
    return size;
  }
  return sysconf(name);
}

}  // extern "C"