ARMmbed
/
mbed-os
mirror of https://github.com/ARMmbed/mbed-os.git
1
0
Fork 0
Code Issues Projects Releases Wiki Activity

Make SingletonPtr methods const 

Make get() and operators * and -> of SingletonPtr const - they are
logically const and thread-safe, despite the construction on first call.
This construction is "invisible" to the caller of those methods.
pull/8354/head
Kevin Bracey 2018-09-10 11:00:08 +03:00
parent fd4f47d18f
commit 199d1667ff
1 changed files with 5 additions and 5 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

10
platform/SingletonPtr.h
View File

@ -88,7 +88,7 @@ struct SingletonPtr {
* @returns
* A pointer to the singleton
*/
T *get()
T *get() const
{
if (NULL == _ptr) {
singleton_lock();
@ -108,7 +108,7 @@ struct SingletonPtr {
* @returns
* A pointer to the singleton
*/
T *operator->()
T *operator->() const
{
return get();
}
@ -118,15 +118,15 @@ struct SingletonPtr {
* @returns
* A reference to the singleton
*/
T &operator*()
T &operator*() const
{
return *get();
}
// This is zero initialized when in global scope
T *_ptr;
mutable T *_ptr;
// Force data to be 4 byte aligned
uint32_t _data[(sizeof(T) + sizeof(uint32_t) - 1) / sizeof(uint32_t)];
mutable uint32_t _data[(sizeof(T) + sizeof(uint32_t) - 1) / sizeof(uint32_t)];
};
#endif