X-Git-Url: https://git.saurik.com/apt.git/blobdiff_plain/484dbb814fd2b787b2206ffe9504798dfd73ae6c..115ba31b90e0d6643670d7d079f9f27b0e05f1c2:/apt-pkg/contrib/mmap.h?ds=sidebyside diff --git a/apt-pkg/contrib/mmap.h b/apt-pkg/contrib/mmap.h index 19cf7582d..5ca951204 100644 --- a/apt-pkg/contrib/mmap.h +++ b/apt-pkg/contrib/mmap.h @@ -44,13 +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;}; @@ -82,8 +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: @@ -94,8 +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(); };