X-Git-Url: https://git.saurik.com/apt.git/blobdiff_plain/171c75f13acc955110a6c4693c7b8fe243709843..8d3489abd90a64715b92976a7c60b42a386a4c5c:/apt-pkg/contrib/mmap.h?ds=inline diff --git a/apt-pkg/contrib/mmap.h b/apt-pkg/contrib/mmap.h index e329b167a..5ca951204 100644 --- a/apt-pkg/contrib/mmap.h +++ b/apt-pkg/contrib/mmap.h @@ -25,9 +25,6 @@ #ifndef PKGLIB_MMAP_H #define PKGLIB_MMAP_H -#ifdef __GNUG__ -#pragma interface "apt-pkg/mmap.h" -#endif #include <string> #include <apt-pkg/fileutl.h> @@ -47,13 +44,18 @@ class MMap unsigned long iSize; void *Base; + // In case mmap can not be used, we keep a dup of the file + // descriptor that should have been mmaped so that we can write to + // the file in Sync(). + FileFd *SyncToFd; + bool Map(FileFd &Fd); bool Close(bool DoSync = true); public: enum OpenFlags {NoImmMap = (1<<0),Public = (1<<1),ReadOnly = (1<<2), - UnMapped = (1<<3)}; + UnMapped = (1<<3), Moveable = (1<<4), Fallback = (1 << 5)}; // Simple accessors inline operator void *() {return Base;}; @@ -85,8 +87,12 @@ class DynamicMMap : public MMap FileFd *Fd; unsigned long WorkSpace; + unsigned long const GrowFactor; + unsigned long const Limit; Pool *Pools; unsigned int PoolCount; + + bool Grow(); public: @@ -97,8 +103,10 @@ class DynamicMMap : public MMap inline unsigned long WriteString(const 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 WorkSpace = 2*1024*1024); - DynamicMMap(unsigned long Flags,unsigned long WorkSpace = 2*1024*1024); + DynamicMMap(FileFd &F,unsigned long Flags,unsigned long const &WorkSpace = 2*1024*1024, + unsigned long const &Grow = 1024*1024, unsigned long const &Limit = 0); + DynamicMMap(unsigned long Flags,unsigned long const &WorkSpace = 2*1024*1024, + unsigned long const &Grow = 1024*1024, unsigned long const &Limit = 0); virtual ~DynamicMMap(); };