sampler

Namespaces

enum class SamplingState : uint8_t

Name	Value	Comments
Unallocated	0	The idle state for the sampler. We're not actively sampling nor is there a user handle associated with us.
Configured	1	We have buffers allocated and the user has a handle to us and can start a session.
Running	2	The session is in progress. We are taking samples and writing data.
Stopping	3	The session is stopping, no more references to the buffers are allowed to be created and we're waiting for existing references to be released.
Reading	4	We have a read in flight. If we get a destruction request, we need to delay destruction of resources until the read is completed.
Destroying	5	We requested a session teardown while were we reading. Once the read finishes, we'll clear the buffers and become allocated.

The current state of the sampler.

Valid state transitions are:

```

/- [ Destroying ]

- [ Reading ]

| ^ |

v | v

[ Unallocated ] -> [ Configured ] -> [ Running ]

^ | ^ |

----------/ | v

-[ Stopping ]

```

Defined at line 48 of file ../../zircon/kernel/lib/thread_sampler/include/lib/thread_sampler/thread_sampler.h

ThreadSampler gThreadSampler

Defined at line 26 of file ../../zircon/kernel/lib/thread_sampler/thread_sampler.cc