The previous implementation, based on thread-local storage, did not
ensure that the context was destructed before the FileSource run loop.
This resulted in implementations attempting to uv_close handles for a
loop that had already been destroyed.
This change also fixes#1262.
SharedRequestBase was trying to do two different jobs: be a base class
for Asset/HttpRequest and track internal state for DefaultFileSource.
Now we have RequestBase for the former, and DefaultFileRequest for the
latter.
To make it easier to debug, add the Environment ID and the Thread name
to the log messages. For instance log messages from the TileParser will look like:
[WARNING] {0}{TileWorker_15/18653/9486}[ParseTile]: some relevant warning message
| | | |
| | | +-> Component
| | +--------------------> Thread name
| +----------------------------------> Environment ID
+------------------------------------------> Severity level
Log messages that are not inside an Environment::Scope will work
normally and will look like:
[WARNING] [JNI]: some relevant warning message
Fixes#882.
No initialization is needed anymore and we can use the logging functions
safely at any point of the code (threading is not handled though, so you
might get multiplexed messages if you log from two threads
simultaneously).
Move the implementation of the more specialized methods to the base
class and let the platform implement only the most generic method that
takes all the possible arguments.
These specialized methods will then map to the generic implementation
that must be provided by the platforms we support.
we are now scoping all file requests to an environment object. The FileSource implementation treats
this as an opaque pointer, but allows canceling all Requests that are associated with that pointer.
This is necessary to abort all file requests that originated from a particular Map object. Aborting
a file request is different from canceling a file request: A canceled request doesn't have its
callback called, while an aborted request will have its callback called with an error, indicating
that the environment is going to be shut down.
