30 #ifndef _UCOMMON_MAPPED_H_
31 #define _UCOMMON_MAPPED_H_
33 #ifndef _UCOMMON_LINKED_H_
37 #ifndef _UCOMMON_THREAD_H_
41 #ifndef _UCOMMON_STRING_H_
81 void create(
const char *name,
size_t size = (
size_t)0);
116 static void remove(
const char *name);
122 inline operator bool()
const
123 {
return (size != 0);}
130 {
return (size == 0);}
139 void *sbrk(
size_t size);
146 void *offset(
size_t offset)
const;
156 bool copy(
size_t offset,
void *buffer,
size_t size)
const;
162 inline size_t len(
void)
const
179 static void disable(
void);
203 inline void create(
const char *fname,
unsigned count)
219 MappedReuse(
const char *name,
size_t size,
unsigned count);
225 bool avail(
void)
const;
279 inline void create(
const char *fn,
unsigned members)
299 {
new((caddr_t)
offset(0)) T[size /
sizeof(T)];}
306 {
return sbrk(
sizeof(T));}
314 {
return static_cast<T*
>(
offset(member *
sizeof(T)));}
321 {
return static_cast<T*
>(
sbrk(
sizeof(T)));}
335 inline unsigned max(
void)
const
336 {
return (
unsigned)(size /
sizeof(T));}
372 {
new((caddr_t)
pos(0)) T[size /
sizeof(T)];}
378 inline operator bool()
const
409 inline T *
pos(
size_t member)
489 {
return static_cast<const T*
>(
offset(member *
sizeof(T)));}
499 inline volatile const T *
get(
unsigned member)
500 {
return static_cast<const T*
>(
offset(member *
sizeof(T)));}
502 inline void copy(
unsigned member, T& buffer)
510 {
return (
unsigned)(size /
sizeof(T));}
mapped_array(const char *name, unsigned number)
Construct mapped vector array of typed objects.
Common namespace for all ucommon objects.
ReusableObject * getTimed(timeout_t timeout)
Request a reusable object from the free list or mapped space.
void removeLocked(ReusableObject *object)
Used to return an object to the reuse pool when the mutex lock is already held.
T copy(const T &src)
Convenience function to copy objects.
unsigned count(void) const
Get count of typed member objects held in this map.
size_t len(void) const
Get size of mapped segment.
Class to access a named mapped segment published from another process.
T * operator*()
Request a typed reusable object from the free list or mapped space by pointer reference.
Linked objects, lists, templates, and containers.
T * getLocked(void)
Used to get a typed object from the reuse pool when the mutex lock is already held.
void * offset(size_t offset) const
Get memory from a specific offset within the mapped memory segment.
A common string class and character string support functions.
T * operator()(void)
Allocate mapped space for one object.
volatile const T * operator()(unsigned member)
Access typed member object in the mapped segment.
void release(ReusableObject *object)
Release resuable object.
ReusableObject * request(void)
Request a reusable object from the free list or mapped space.
Map a reusable allocator over a named shared memory segment.
void create(const char *name, size_t size=(size_t) 0)
Supporting function to construct a new or access an existing shared memory segment.
T * request(void)
Request a typed reusable object from the free list or mapped space.
void * sbrk(size_t size)
Extend size of managed heap on shared memory segment.
Template class to map typed reusable objects into shared memory heap.
void initialize(void)
Initialize typed data in mapped array.
T * operator()(unsigned member)
Get typed pointer to member object of vector in mapped segment.
void * addLock(void)
Add mapped space while holding lock for one object.
mapped_reuse(const char *name, unsigned number)
Construct mapped reuse array of typed objects.
unsigned max(void) const
Get member size of typed objects that can be held in mapped vector.
mapped_view(const char *name)
Map existing named memory segment.
ReusableObject * getLocked(void)
Used to get an object from the reuse pool when the mutex lock is already held.
T * pos(size_t member)
Get typed object from a specific member offset within the mapped segment.
Generic non-recursive exclusive lock class.
T & operator[](unsigned member)
Reference typed object of vector in mapped segment.
bool operator!() const
Test if map is inactive.
void initialize(void)
Initialize typed data in mapped array.
void release(T *object)
Used to release a typed object back to the reuse typed object pool.
ReusableObject * get(void)
Request a reusable object from the free list or mapped space.
bool operator!() const
Check whether there are typed objects available to be allocated.
Reusable objects for forming private heaps.
Template class to map typed vector into shared memory.
void removeLocked(T *object)
Used to return a typed object to the reuse pool when the mutex lock is already held.
T * get(void)
Request a typed reusable object from the free list or mapped space.
Construct or access a named section of memory.
bool avail(void) const
Check whether there are objects available to be allocated.
bool copy(size_t offset, void *buffer, size_t size) const
Copy memory from specific offset within the mapped memory segment.
volatile const T & operator[](unsigned member)
Reference typed member object in the mapped segment.
T * getTimed(timeout_t timeout)
Request a typed reusable object from the free list or mapped space.
Thread classes and sychronization objects.
Class for resource bound memory pools between threads.
caddr_t addr(void)
Get starting address of mapped segment.