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Author SHA1 Message Date
Lioncash
6ac955a0b4 hle/service: Default constructors and destructors in the cpp file where applicable
When a destructor isn't defaulted into a cpp file, it can cause the use
of forward declarations to seemingly fail to compile for non-obvious
reasons. It also allows inlining of the construction/destruction logic
all over the place where a constructor or destructor is invoked, which
can lead to code bloat. This isn't so much a worry here, given the
services won't be created and destroyed frequently.

The cause of the above mentioned non-obvious errors can be demonstrated
as follows:

------- Demonstrative example, if you know how the described error happens, skip forwards -------

Assume we have the following in the header, which we'll call "thing.h":

\#include <memory>

// Forward declaration. For example purposes, assume the definition
// of Object is in some header named "object.h"
class Object;

class Thing {
public:
    // assume no constructors or destructors are specified here,
    // or the constructors/destructors are defined as:
    //
    // Thing() = default;
    // ~Thing() = default;
    //

    // ... Some interface member functions would be defined here

private:
    std::shared_ptr<Object> obj;
};

If this header is included in a cpp file, (which we'll call "main.cpp"),
this will result in a compilation error, because even though no
destructor is specified, the destructor will still need to be generated by
the compiler because std::shared_ptr's destructor is *not* trivial (in
other words, it does something other than nothing), as std::shared_ptr's
destructor needs to do two things:

1. Decrement the shared reference count of the object being pointed to,
   and if the reference count decrements to zero,

2. Free the Object instance's memory (aka deallocate the memory it's
   pointing to).

And so the compiler generates the code for the destructor doing this inside main.cpp.

Now, keep in mind, the Object forward declaration is not a complete type. All it
does is tell the compiler "a type named Object exists" and allows us to
use the name in certain situations to avoid a header dependency. So the
compiler needs to generate destruction code for Object, but the compiler
doesn't know *how* to destruct it. A forward declaration doesn't tell
the compiler anything about Object's constructor or destructor. So, the
compiler will issue an error in this case because it's undefined
behavior to try and deallocate (or construct) an incomplete type and
std::shared_ptr and std::unique_ptr make sure this isn't the case
internally.

Now, if we had defaulted the destructor in "thing.cpp", where we also
include "object.h", this would never be an issue, as the destructor
would only have its code generated in one place, and it would be in a
place where the full class definition of Object would be visible to the
compiler.

---------------------- End example ----------------------------

Given these service classes are more than certainly going to change in
the future, this defaults the constructors and destructors into the
relevant cpp files to make the construction and destruction of all of
the services consistent and unlikely to run into cases where forward
declarations are indirectly causing compilation errors. It also has the
plus of avoiding the need to rebuild several services if destruction
logic changes, since it would only be necessary to recompile the single
cpp file.
2018-09-10 23:55:31 -04:00
David Marcec
76fad8410d Registered missing channel devices 2018-08-13 14:03:50 +10:00
Lioncash
d378d98e26 nvdrv: Get rid of global std::weak_ptr
Rather than use global state, we can simply pass the instance into the
NVFlinger instance directly.
2018-08-07 21:53:05 -04:00
Lioncash
300ab211e8 nvdrv: Make Ioctl()'s definition match its prototype
The only reason this wasn't a compilation error is because we use
little-endian systems.
2018-08-07 08:57:11 -04:00
Lioncash
f9951352f6 service/nvdrv: Take std::string in Open() by const reference
Avoids copies from being made, since the string is only ever used for
lookup, the data is never transfered anywhere.

Ideally, we'd use a std::string_view here, but devices is a
std::unordered_map, not a std::map, so we can't use heterogenous lookup
here.
2018-07-25 17:37:43 -04:00
Lioncash
a2cd07d094 service/nvdrv: Use std::move where applicable
Avoids unnecessary reference count increments and decrements.

In one case, we don't need to make a shared_ptr copy at all,
just to call a member function.
2018-07-25 17:31:08 -04:00
mailwl
9a273bb23b Services/nvdrv: add '/dev/nvhost-nvdec' device 2018-05-30 12:49:28 +03:00
Lioncash
8475496630
general: Convert assertion macros over to be fmt-compatible 2018-04-27 10:04:02 -04:00
Lioncash
ccca5e7c28 service: Use nested namespace specifiers where applicable
Tidies up namespace declarations
2018-04-19 22:20:28 -04:00
Subv
6cddf9d88e Make a GPU class in VideoCore to contain the GPU state.
Also moved the GPU MemoryManager class to video_core since it makes more sense for it to be there.
2018-02-11 23:44:12 -05:00
Subv
ba2426aa3f nvdrv: Make the GPU memory manager available to nvhost-gpu. 2018-02-11 21:30:23 -05:00
bunnei
703880c9ab nvhost_as_gpu: Add nvmap as a class member. 2018-02-07 22:55:09 -05:00
David
d129905a66 Extra nvdrv support (#162)
* FinishInitalize needed for 3.0.1+ games

* nvdrv:s and nvdrv:t both use NVDRV

* Most settings return 0 on hardware, disabled NV_MEMORY_PROFILER for now.

NVN_THROUGH_OPENGL & NVRM_GPU_PREVENT_USE are a few interesting settings to look at. Carefully choosing settings can help with drawing graphics later on

* Initial /dev/nvhost-gpu support

* ZCullBind

* Stubbed SetErrorNotifier

* Fixed SetErrorNotifier log, Added SetChannelPriority

* Allocate GPFIFO Ex2, Allocate Obj Ctx, Submit GPFIFO

* oops

* Fixed up naming/structs/enums. Used vector instead of array for "gpfifo_entry"

* Added missing fixes

* /dev/nvhost-ctrl-gpu

* unneeded struct

* Forgot u32 in enum class

* Automatic descriptor swapping for ioctls, fixed nvgpu_gpu_get_tpc_masks_args being incorrect size

* nvdrv#QueryEvent

* Renamed logs for nvdrv

* Refactor ioctl so nv_result isn't needed

* /dev/nvhost-as-gpu

* Fixed Log service naming, CtxObjects now u32, renamed all structs, added static_asserts to structs, used INSERT_PADDING_WORDS instead of u32s

* nvdevices now uses "Ioctl" union,

* IoctlGpfifoEntry now uses bit field

* final changes
2018-02-05 18:19:31 -08:00
David
eeb3b5eed7 Added nvmemp, Added /dev/nvhost-ctrl, SetClientPID now stores pid (#114)
* Added nvmemp, Added /dev/nvhost-ctrl, SetClientPID now stores pid

* used clang-format-3.9 instead

* lowercase pid

* Moved nvmemp handlers to cpp

* Removed unnecessary logging for NvOsGetConfigU32. Cleaned up log and changed to LOG_DEBUG

* using std::arrays instead of c arrays

* nvhost get config now uses std::array completely

* added pid logging back

* updated cmakelist

* missing includes

* added array, removed memcpy

* clang-format6.0
2018-01-21 17:59:50 -05:00
James Rowe
096be16636 Format: Run the new clang format on everything 2018-01-20 16:45:11 -07:00
Frederic Meyer
60d650cc4e nvdrv: stubbed Close(cmd 2) 2018-01-17 17:08:46 +01:00
Subv
cb75b56e45 NV: Implemented the nvdrv service, which uses the same interface as nvdrv:a 2018-01-16 19:04:09 -05:00
Subv
30657f9ca1 NV: Move the nvdrv classes into the Nvidia namespace, and move the functionality to a s single module that services call. 2018-01-16 19:03:49 -05:00
bunnei
1247c53786 yuzu: Update license text to be consistent across project. 2018-01-13 16:22:39 -05:00
Subv
34ae2ec644 NV: Expose the nvdisp_disp0 device and a weak reference to the nvdrv:a service.
NVFlinger will call into the nvdisp_disp0 device to perform screen flips, bypassing the ioctl interface.

We now have the address of the framebuffer to draw, we just need to actually put it on the screen.
2018-01-10 23:28:29 -05:00
Subv
94a5e97eb3 NV: Implemented the nvdrv:a service and the /dev/nvmap device. 2018-01-10 23:28:05 -05:00