MMap Class - Provides 'real' mmap or a faked mmap using read().
The purpose of this code is to provide a generic way for clients to
- access the mmap function. In enviroments that do not support mmap
+ access the mmap function. In environments that do not support mmap
from file fd's this function will use read and normal allocated
memory.
The DynamicMMap class is used to help the on-disk data structure
generators. It provides a large allocated workspace and members
- to allocate space from the workspace in an effecient fashion.
+ to allocate space from the workspace in an efficient fashion.
This source is placed in the Public Domain, do with it what you will
It was originally written by Jason Gunthorpe.
#include <string>
-#include <apt-pkg/fileutl.h>
+#ifndef APT_8_CLEANER_HEADERS
+#include <apt-pkg/fileutl.h>
using std::string;
+#endif
+
+class FileFd;
/* This should be a 32 bit type, larger tyes use too much ram and smaller
types are too small. Where ever possible 'unsigned long' should be used
public:
- enum OpenFlags {NoImmMap = (1<<0),Public = (1<<1),ReadOnly = (1<<2),
+ enum OpenFlags {Public = (1<<1),ReadOnly = (1<<2),
UnMapped = (1<<3), Moveable = (1<<4), Fallback = (1 << 5)};
// Simple accessors
unsigned long RawAllocate(unsigned long long Size,unsigned long Aln = 0);
unsigned long Allocate(unsigned long ItemSize);
unsigned long WriteString(const char *String,unsigned long Len = (unsigned long)-1);
- inline unsigned long WriteString(const string &S) {return WriteString(S.c_str(),S.length());};
+ inline unsigned long WriteString(const std::string &S) {return WriteString(S.c_str(),S.length());};
void UsePools(Pool &P,unsigned int Count) {Pools = &P; PoolCount = Count;};
DynamicMMap(FileFd &F,unsigned long Flags,unsigned long const &WorkSpace = 2*1024*1024,