class VmDebugCompressor
Defined at line 24 of file ../../zircon/kernel/vm/include/vm/debug_compressor.h
A debug compressor that can be given references to pages in VMOs and will randomly compress a
subset of them. The compression will be performed in a difference Zircon thread, so the pages
can be given with arbitrary locks held.
Public Methods
void ~VmDebugCompressor ()Defined at line 20 of file ../../zircon/kernel/vm/debug_compressor.cc
void VmDebugCompressor ()Defined at line 26 of file ../../zircon/kernel/vm/include/vm/debug_compressor.h
zx_status_t Init ()Initializes the debug compressor. This method may acquire Mutexes, and so must not be called
with any spinlocks held. Other methods should not be called before |Init| is called and returns
ZX_OK.
Defined at line 133 of file ../../zircon/kernel/vm/debug_compressor.cc
void Add (vm_page_t * page, VmCowPages * object, uint64_t offset)Adds the specified |page| at |offset| in |object| to the debug compressor as a candidate for
compression. The |page| and |object| must remain valid until |Add| returns. This implies that
|object| lock must be held, however this cannot be stated with an TA_REQ statement since
VmCowPages is not declared yet.
Defined at line 37 of file ../../zircon/kernel/vm/debug_compressor.cc
void Pause ()Pauses the debug compressor such that all future |Add| calls will be ignored. It is an error to
call |Pause| twice without calling |Resume| in between. Pause might acquire arbitrary VMO and
other locks and should not be called with other locks held.
Defined at line 97 of file ../../zircon/kernel/vm/debug_compressor.cc
void Resume ()Resumes from a |Pause|, causing calls to |Add| to no longer be ignored. It is an error to call
|Resume| except after having called |Pause|.
Defined at line 112 of file ../../zircon/kernel/vm/debug_compressor.cc