本文整理汇总了C++中MongoMMF::create方法的典型用法代码示例。如果您正苦于以下问题：C++ MongoMMF::create方法的具体用法？C++ MongoMMF::create怎么用？C++ MongoMMF::create使用的例子？那么, 这里精选的方法代码示例或许可以为您提供帮助。您也可以进一步了解该方法所在类MongoMMF的用法示例。
在下文中一共展示了MongoMMF::create方法的2个代码示例，这些例子默认根据受欢迎程度排序。您可以为喜欢或者感觉有用的代码点赞，您的评价将有助于系统推荐出更棒的C++代码示例。
示例1: t
void t() {
for( int i = 0; i < 20; i++ ) {
sleepmillis(21);
string fn = "/tmp/t1";
MongoMMF f;
unsigned long long len = 1 * 1024 * 1024;
assert( f.create(fn, len, /*sequential*/rand()%2==0) );
{
char *p = (char *) f.getView();
assert(p);
// write something to the private view as a test
strcpy(p, "hello");
}
if( cmdLine.dur ) {
char *w = (char *) f.view_write();
strcpy(w + 6, "world");
}
MongoFileFinder ff;
ASSERT( ff.findByPath(fn) );
}
}示例2: run
void run() {
try { boost::filesystem::remove(fn); }
catch(...) { }
writelock lk;
{
MongoMMF f;
unsigned long long len = 256 * 1024 * 1024;
assert( f.create(fn, len, /*sequential*/false) );
{
char *p = (char *) f.getView();
assert(p);
// write something to the private view as a test
if( cmdLine.dur )
MemoryMappedFile::makeWritable(p, 6);
strcpy(p, "hello");
}
if( cmdLine.dur ) {
char *w = (char *) f.view_write();
strcpy(w + 6, "world");
}
MongoFileFinder ff;
ASSERT( ff.findByPath(fn) );
ASSERT( ff.findByPath("asdf") == 0 );
}
{
MongoFileFinder ff;
ASSERT( ff.findByPath(fn) == 0 );
}
int N = 10000;
#if !defined(_WIN32) && !defined(__linux__)
// seems this test is slow on OS X.
N = 100;
#endif
// we make a lot here -- if we were leaking, presumably it would fail doing this many.
Timer t;
for( int i = 0; i < N; i++ ) {
MongoMMF f;
assert( f.open(fn, i%4==1) );
{
char *p = (char *) f.getView();
assert(p);
if( cmdLine.dur )
MemoryMappedFile::makeWritable(p, 4);
strcpy(p, "zzz");
}
if( cmdLine.dur ) {
char *w = (char *) f.view_write();
if( i % 2 == 0 )
++(*w);
assert( w[6] == 'w' );
}
}
if( t.millis() > 10000 ) {
log() << "warning: MMap LeakTest is unusually slow N:" << N << ' ' << t.millis() << "ms" << endl;
}
}