blob: 0b788f7a59577b7a04dbd77a7ab4db8c6f58ce19 [file] [log] [blame] [edit]
//* Copyright 2019 The Dawn & Tint Authors
//*
//* Redistribution and use in source and binary forms, with or without
//* modification, are permitted provided that the following conditions are met:
//*
//* 1. Redistributions of source code must retain the above copyright notice, this
//* list of conditions and the following disclaimer.
//*
//* 2. Redistributions in binary form must reproduce the above copyright notice,
//* this list of conditions and the following disclaimer in the documentation
//* and/or other materials provided with the distribution.
//*
//* 3. Neither the name of the copyright holder nor the names of its
//* contributors may be used to endorse or promote products derived from
//* this software without specific prior written permission.
//*
//* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
//* AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
//* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
//* DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE
//* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
//* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
//* SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
//* CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
//* OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
//* OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
#include "dawn/common/Assert.h"
#include "dawn/wire/server/Server.h"
namespace dawn::wire::server {
{% for command in cmd_records["command"] %}
{% set method = command.derived_method %}
{% set is_method = method != None %}
{% set returns = is_method and method.return_type.name.canonical_case() != "void" %}
{% set Suffix = command.name.CamelCase() %}
//* The generic command handlers
WireResult Server::Handle{{Suffix}}(DeserializeBuffer* deserializeBuffer) {
{{Suffix}}Cmd cmd;
WIRE_TRY(cmd.Deserialize(deserializeBuffer, &mAllocator
{%- if command.may_have_dawn_object -%}
, *this
{%- endif -%}
));
{% if Suffix in server_custom_pre_handler_commands %}
WIRE_TRY(PreHandle{{Suffix}}(cmd));
{%- endif -%}
//* Allocate any result objects
{% for member in command.members if member.is_return_value -%}
{{ assert(member.handle_type) }}
{% set cType = as_cType(member.handle_type.name) %}
{% set name = as_varName(member.name) %}
Reserved<{{cType}}> {{name}}Data;
WIRE_TRY(Objects<{{cType}}>().Allocate(&{{name}}Data, cmd.{{name}}));
{{name}}Data->generation = cmd.{{name}}.generation;
{%- endfor %}
//* Get any input objects
{% for member in command.members if member.id_type != None -%}
{% set cType = as_cType(member.id_type.name) %}
{% set name = as_varName(member.name) %}
Known<{{cType}}> {{name}}Handle;
WIRE_TRY(Objects<{{cType}}>().Get(cmd.{{name}}, &{{name}}Handle));
{% endfor %}
//* Do command
WIRE_TRY(Do{{Suffix}}(
{%- for member in command.members -%}
{%- if member.is_return_value -%}
{%- if member.handle_type -%}
&{{as_varName(member.name)}}Data->handle //* Pass the handle of the output object to be written by the doer
{%- else -%}
&cmd.{{as_varName(member.name)}}
{%- endif -%}
{%- elif member.id_type != None -%}
{{as_varName(member.name)}}Handle
{%- else -%}
cmd.{{as_varName(member.name)}}
{%- endif -%}
{%- if not loop.last -%}, {% endif %}
{%- endfor -%}
));
return WireResult::Success;
}
{% endfor %}
const volatile char* Server::HandleCommandsImpl(const volatile char* commands, size_t size) {
DeserializeBuffer deserializeBuffer(commands, size);
while (deserializeBuffer.AvailableSize() >= sizeof(CmdHeader) + sizeof(WireCmd)) {
// Start by chunked command handling, if it is done, then it means the whole buffer
// was consumed by it, so we return a pointer to the end of the commands.
switch (HandleChunkedCommands(deserializeBuffer.Buffer(), deserializeBuffer.AvailableSize())) {
case ChunkedCommandsResult::Consumed:
return commands + size;
case ChunkedCommandsResult::Error:
return nullptr;
case ChunkedCommandsResult::Passthrough:
break;
}
WireCmd cmdId = *static_cast<const volatile WireCmd*>(static_cast<const volatile void*>(
deserializeBuffer.Buffer() + sizeof(CmdHeader)));
WireResult result;
switch (cmdId) {
{% for command in cmd_records["command"] %}
case WireCmd::{{command.name.CamelCase()}}:
result = Handle{{command.name.CamelCase()}}(&deserializeBuffer);
break;
{% endfor %}
default:
result = WireResult::FatalError;
}
if (result != WireResult::Success) {
return nullptr;
}
mAllocator.Reset();
}
// After the server handles all the commands from the stream, we additionally run
// ProcessEvents on all known Instances so that any work done on the server side can be
// forwarded through to the client.
for (auto instance : Objects<WGPUInstance>().GetAllHandles()) {
if (DoInstanceProcessEvents(instance) != WireResult::Success) {
return nullptr;
}
}
if (deserializeBuffer.AvailableSize() != 0) {
return nullptr;
}
return commands;
}
} // namespace dawn::wire::server